In this work, we report an on-chip aptasensor for ochratoxin A (OTA) toxin detection that is based on a graphene field-effect transistor (GFET). Graphene-based devices are fabricated via large-scale technology, allowing for upscaling the sensor fabrication and lowering the device cost. The sensor assembly was performed through covalent bonding of graphene\uffe2\uff80\uff99s surface with an aptamer specifically sensitive towards OTA. The results demonstrate fast (within 5 min) response to OTA exposure with a linear range of detection between 4 ng/mL and 10 pg/mL, with a detection limit of 4 pg/mL. The regeneration time constant of the sensor was found to be rather small, only 5.6 s, meaning fast sensor regeneration for multiple usages. The high reproducibility of the sensing response was demonstrated via using several recycling procedures as well as various GFETs. The applicability of the aptasensor to real samples was demonstrated for spiked red wine samples with recovery of about 105% for a 100 pM OTA concentration; the selectivity of the sensor was also confirmed via addition of another toxin, zearalenone. The developed platform opens the way for multiplex sensing of different toxins using an on-chip array of graphene sensors.
", "keywords": ["Communication", "graphene", "R", "aptamer", "Biosensing Techniques", "02 engineering and technology", "Aptamers", " Nucleotide", "Ochratoxins", "01 natural sciences", "7. Clean energy", "0104 chemical sciences", "12. Responsible consumption", "on-chip", "sensor", "Limit of Detection", "transistor", "Medicine", "Graphite", "0210 nano-technology", "ochratoxin A"]}, "links": [{"href": "https://www.mdpi.com/2072-6651/11/10/550/pdf"}, {"href": "https://doi.org/10.3390/toxins11100550"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Toxins", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.3390/toxins11100550", "name": "item", "description": "10.3390/toxins11100550", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.3390/toxins11100550"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-09-20T00:00:00Z"}}, {"id": "10.1007/s41061-019-0272-1", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:15:26Z", "type": "Journal Article", "created": "2020-07-01", "title": "Limitations and Prospects for Wastewater Treatment by UV and Visible-Light-Active Heterogeneous Photocatalysis: A Critical Review", "description": "Heterogeneous photocatalysis (HPC) has been widely investigated in recent decades for the removal of a number of contaminants from aqueous matrices, but its application in real wastewater treatment at full scale is still scarce. Indeed, process and technological limitations have made HPC uncompetitive with respect to consolidated processes/technologies so far. In this manuscript, these issues are critically discussed and reviewed with the aim of providing the reader with a realistic picture of the prospective application of HPC in wastewater treatment. Accordingly, consolidated and new photocatalysts (among which the visible active ones are attracting increasing interest among the scientific community), along with preparation methods, are reviewed to understand whether, with increased process efficiency, these methods can be realistically and competitively developed at industrial scale. Precipitation is considered as an attractive method for photocatalyst preparation at the industrial scale; sol-gel and ultrasound may be feasible only if no expensive metal precursor is used, while hydrothermal and solution combustion synthesis are expected to be difficult (expensive) to scale up. The application of HPC in urban and industrial wastewater treatment and possible energy recovery by hydrogen production are discussed in terms of current limitations and future prospects. Despite the fact that HPC has been studied for the removal of pollutants in aqueous matrices for two decades, its use in wastewater treatment is still at a 'technological research' stage. In order to accelerate the adoption of HPC at full scale, it is advisable to focus on investigations under real conditions and on developing/improving pilot-scale reactors to better investigate scale-up conditions and the potential to successfully address specific challenges in wastewater treatment through HPC. In realistic terms, the prospective use of HPC is more likely as a tertiary treatment of wastewater, particularly if more stringent regulations come into force, than as pretreatment for industrial wastewater to improve biodegradability.", "keywords": ["Energy recovery; Hydrogen production; Industrial wastewater; Photocatalysis; Technology readiness level; Urban wastewater; Bacteria; Biodegradation", " Environmental; Catalysis; Metals; Waste Disposal", " Fluid; Water Pollutants", " Chemical; Light; Ultraviolet Rays", "Bacteria", "Light", "Ultraviolet Rays", "02 engineering and technology", "Waste Disposal", " Fluid", "7. Clean energy", "01 natural sciences", "Catalysis", "6. Clean water", "12. Responsible consumption", "0104 chemical sciences", "Biodegradation", " Environmental", "Metals", "13. Climate action", "11. Sustainability", "0210 nano-technology", "Water Pollutants", " Chemical"]}, "links": [{"href": "http://link.springer.com/content/pdf/10.1007/s41061-019-0272-1.pdf"}, {"href": "https://doi.org/10.1007/s41061-019-0272-1"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Topics%20in%20Current%20Chemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s41061-019-0272-1", "name": "item", "description": "10.1007/s41061-019-0272-1", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s41061-019-0272-1"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-12-16T00:00:00Z"}}, {"id": "10.1002/adfm.202112374", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:14:10Z", "type": "Journal Article", "created": "2022-02-24", "title": "Differential Bio\u2010Optoelectronic Gating of Semiconducting Carbon Nanotubes by Varying the Covalent Attachment Residue of a Green Fluorescent Protein", "description": "AbstractIntegrating photoactive proteins with synthetic nanomaterials holds great promise in developing optoelectronic devices whereby light, captured by a antenna protein, is converted to a modulated electrical response. The protein\uffe2\uff80\uff93nanomaterial interface is critical to defining optoelectronic properties; successful integration of bionanohybrids requires control over protein attachment site and a detailed understanding of its impact on device performance. Here, the first single\uffe2\uff80\uff90walled carbon nanotube (SWCNT) bio\uffe2\uff80\uff90optoelectronic transistor enabled by the site\uffe2\uff80\uff90specific direct interfacing with a green fluorescent protein (GFP) via genetically encoded phenyl azide photochemistry is reported. The electrical behavior of individual semiconducting SWCNTs depends on the protein residue coupling site and provides the basis to design eco\uffe2\uff80\uff90friendly phototransistors and optoelectronic memory. Attachment at one GFP residue proximal to the chromophore produces a wavelength\uffe2\uff80\uff90specific phototransistor. The bio\uffe2\uff80\uff90transistor can be switched off in less than 38 s with responsivity up to 7 \uffc3\uff97 103 A W\uffe2\uff88\uff921 at 470\uffc2\uffa0nm. Attachment via a second residue distal to the chromophore generates optoelectronic memory that show rapid and reproducible conductivity switching with up to 15\uffe2\uff80\uff90fold modulation that is restored on the application of a gate voltage. Therefore, photoactive proteins, especially GFP, can be realized as a key material for novel single\uffe2\uff80\uff90molecule electronic and photonic devices.The molecular alignment of platinum(II) octaethyl porphyrin (PtOEP) crystals evaporated on KBr (see atomic force microscopy image, Figure) can be readily changed from perpendicular to parallel by changing the substrate temperature. The field\uffe2\uff80\uff90effect mobility of transisitors prepared using epitaxially grown PtOEP films aligned perpendicularly to a substrate is 100 times higher than that of those of parallel alignment.Insights into the fascinating molecular world of biological processes are crucial for understanding diseases, developing diagnostics, and effective therapeutics. These processes are complex as they involve interactions between four major classes of biomolecules, i.e., proteins, nucleic acids, carbohydrates, and lipids, which makes it important to be able to discriminate between all these different biomolecular species. In this work, a deep learning\uffe2\uff80\uff90augmented, chemically\uffe2\uff80\uff90specific nanoplasmonic technique that enables such a feat in a label\uffe2\uff80\uff90free manner to not disrupt native processes is presented. The method uses a highly sensitive multiresonant plasmonic metasurface in a microfluidic device, which enhances infrared absorption across a broadband mid\uffe2\uff80\uff90IR spectrum and in water, despite its strongly overlapping absorption bands. The real\uffe2\uff80\uff90time format of the optofluidic method enables the collection of a vast amount of spectrotemporal data, which allows the construction of a deep neural network to discriminate accurately between all major classes of biomolecules. The capabilities of the new method are demonstrated by monitoring of a multistep bioassay containing sucrose\uffe2\uff80\uff90 and nucleotides\uffe2\uff80\uff90loaded liposomes interacting with a small, lipid membrane\uffe2\uff80\uff90perforating peptide. It is envisioned that the presented technology will impact the fields of biology, bioanalytics, and pharmacology from fundamental research and disease diagnostics to drug development.Whole\uffe2\uff80\uff90cell inorganic\uffe2\uff80\uff90biohybrid systems, integrating inorganic photosensitizers with intact living cells, have shown great potential for solar hydrogen production. However, the typical whole cell biohybrid system often suffers from the sluggish kinetics of electron transfer in the transmembrane diffusion process, which severely restrict their photocatalytic activity. Here, a unique periplasmic photosensitized biohybrid system is constructed by translocating CuInS2/ZnS quantum dots (QDs) into the Shewanella oneidensis MR\uffe2\uff80\uff901 (SW) cells that express periplasmic hydrogenases. The photoexcitation and electron transfer processes of QDs photosensitizers occur simultaneously in the periplasm of SW cells, which reduces the distance for electron transport and avoids the extra energy loss involved in the transmembrane process. As expected, the photocatalytic H2 generation of the fabricated biohybrid system is 8.6 times higher than that of bare QDs under visible light irradiation. Moreover, the good viability and stability of this biohybrid system endow it with an excellent sustained hydrogen production within 45 h, representing the most stable biohybrid among the reported whole\uffe2\uff80\uff90cell biohybrid H2 production systems. This work provides a novel insight into the construction of a robust whole\uffe2\uff80\uff90cell biohybrid system for solar hydrogen production.ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a \uffe2\uff80\uff9cFull Text\uffe2\uff80\uff9d option. The original article is trackable via the \uffe2\uff80\uff9cReferences\uffe2\uff80\uff9d option.The title chromenoquinolines are prepared by a novel copper\uffe2\uff80\uff90catalyzed oxidative ring closure \uffe2\uff80\uff90arylation concept utilizing arylpropynyloxy\uffe2\uff80\uff90benzonitriles and diaryliodinium salts.Es wurden die Bedingungen der Erythrochinreaktion mit Chinin systematisch variiert, und es wurde eine neue Vorschrift erarbeitet, die eine maximale F\uffc3\uffa4rbung ergibt. Aus der Modellsubstanz 6\uffe2\uff80\uff90Methoxychinolin wurde die f\uffc3\uffbcr die Farbreaktion verantwortliche Substanz rein isoliert und auf ihre Konstitution hin untersucht. Alle Befunde sprechen daf\uffc3\uffbcr, da\uffc3\uff9f der Substanz die dimere Parachinonstruktur II zukommt. \uffe2\uff80\uff93 Es ist wahrscheinlich, da\uffc3\uff9f die Farbreaktion mit Chinin zu einem analogen Produkt f\uffc3\uffbchrt, das seiner Labilit\uffc3\uffa4t wegen nur nicht in reiner Form gewonnen werden konnte.This work reports on the concise total synthesis of eight natural products of the mugineic acid and avenic acid families (phytosiderophores). An innovative \uffe2\uff80\uff9eeast\uffe2\uff80\uff90to\uffe2\uff80\uff90west\uffe2\uff80\uff9c assembly of the trimeric products resulted in a high degree of divergence enabling the formation of the final products in just 10 or 11\uffe2\uff80\uff85steps each with a minimum of overall synthetic effort. Chiral pool starting materials (l\uffe2\uff80\uff90malic acid, threonines) were employed for the outer building blocks while the middle building blocks were accessed by diastereo\uffe2\uff80\uff90 and enantioselective methods. A highlight of this work consists in the straightforward preparation of epimeric hydroxyazetidine amino acids, useful building blocks on their own, enabling the first synthesis of 3\uffe2\uff80\uff99\uffe2\uff80\uff99\uffe2\uff80\uff90hydroxymugineic acid and 3\uffe2\uff80\uff99\uffe2\uff80\uff99\uffe2\uff80\uff90hydroxy\uffe2\uff80\uff902\uffe2\uff80\uff99\uffe2\uff80\uff90deoxymugineic acid.The radical polymerization of styrene (St) initiated by a trifluoromethyl radical generated from a perfluorinated highly branched persistent radical (PPFR) is presented with an isolated yield above 70\uffe2\uff80\uff89%. The release of .CF3 radical occurred from a temperature above 85\uffe2\uff80\uff89\uffc2\uffb0C. Deeper 1H and 19F\uffe2\uff80\uff85NMR spectroscopies of the resulting fluorinated polystyrenes (CF3\uffe2\uff80\uff90PSts) evidenced the presence of both CF3 end\uffe2\uff80\uff90group of the PSt chain and the trifluoromethylation of the phenyl ring (in meta\uffe2\uff80\uff90position mainly). [PPFR]0/[St]0 initial molar ratios of 3:1, 3:10 and 3:100 led to various molar masses ranging from 1750 to 5400\uffe2\uff80\uff85g\uffe2\uff80\uff89mol\uffe2\uff88\uff921 in 70\uffe2\uff80\uff9386\uffe2\uff80\uff89% yields. MALDI\uffe2\uff80\uff90TOF spectrometry of such CF3\uffe2\uff80\uff90PSts highlighted polymeric distributions which evidenced differences between m/z fragments of 104 and 172 corresponding to styrene and trifluoromethyl styrene units, respectively. Such CF3\uffe2\uff80\uff90PSt polymers were also compared to conventional PSts produced from the radical polymerization of St initiated by a peroxydicarbonate initiator. A mechanism of the polymerization is presented showing the formation of a trifluoromethyl styrene first, followed by its radical (co)polymerization with styrene. The thermal properties (thermal stability and glass transition temperature, Tg) of these polymers were also compared and revealed a much better thermal stability of the CF3\uffe2\uff80\uff90PSt (10\uffe2\uff80\uff89% weight loss at 356\uffe2\uff80\uff93376\uffe2\uff80\uff89\uffc2\uffb0C) and a Tg of around 70\uffe2\uff80\uff89\uffc2\uffb0C.Benzoylessigs\uffc3\uffa4ureester (I) reagiert mit Dimethylhydrazin (II) \uffc3\uffbcber das Hydrazon (III) zu den Betainen (IV).The functionalization of aliphatic C\uffe2\uff80\uff94H bonds is achieved by direct photolytic cyanation with TosCN.The photoRAFT (RAFT=reversible addition\uffe2\uff80\uff90fragmentation radical transfer) polymerization of vinylidene fluoride (VDF) mediated by O\uffe2\uff80\uff90ethyl\uffe2\uff80\uff90S\uffe2\uff80\uff90(1\uffe2\uff80\uff90methoxycarbonyl)ethyl dithiocarbonate using a household white LED as light source at room temperature is presented. PVDFs with molar masses up to ca. 8000\uffe2\uff80\uff85g\uffe2\uff80\uff89mol\uffe2\uff88\uff921 and low dispersities (1.11\uffe2\uff80\uff931.49) were obtained. Kinetic experiments revealed that the use of Ir(ppy)3 as photoredox catalyst lead to faster polymerization. A slowdown of the chain equilibration process was observed during the polymerization, attributed to the accumulation of the less reactivatable CF2\uffe2\uff88\uff92CH2\uffe2\uff88\uff92Xa terminated chains.Bacterial cells can biosynthesize palladium nanoparticles (Pd NPs) and utilize those in situ assembled nanoparticles for synergistic bio\uffe2\uff80\uff90abiotic catalysis, which is promising for pollutant remediation. However, such synergistic catalysis is restricted due to the low cell viability and inefficient palladium immobilization.
RESULTSIn this study, conductive and two\uffe2\uff80\uff90dimensional reduced graphene oxide (rGO) was explored for nanocoating of Shewanella oneidensis cells and the construction of a self\uffe2\uff80\uff90assembled Shewanella@rGO bionanohybrid. Impressively, after in situ biosynthesis of Pd NPs on the Shewanella@rGO bionanohybrid, a Shewanella@rGO@Pd bionanohybrid was assembled, which showed about 10 times higher cell viability and 2.4 times more immobilized palladium content than the bionanohybrid without rGO. More importantly, the improved cell viability and enhanced Pd immobilization synergistically promoted Cr(VI) removal using the Shewanella@rGO@Pd bionanohybrid, which was 10 times that of native cells and five times that of the bionanohybrid without rGO.
CONCLUSIONSThis work provides a promising strategy for biosynthesis and in situ assembly of Pd NPs with living bacterial cells, which is promising for synergistic bio\uffe2\uff80\uff90abiotic removal of Cr(VI) and should extend the application of Pd NPs in pollutant remediation. \uffc2\uffa9 2020 Society of Chemical IndustryHigh\uffe2\uff80\uff90resolution mass spectrometry (HRMS) has become a vital tool for dissolved organic matter (DOM) characterization. The upward trend in HRMS analysis of DOM presents challenges in data comparison and interpretation among laboratories operating instruments with differing performance and user operating conditions. It is therefore essential that the community establishes metric ranges and compositional trends for data comparison with reference samples so that data can be robustly compared among research groups. To this end, four identically prepared DOM samples were each measured by 16 laboratories, using 17 commercially purchased instruments, using positive\uffe2\uff80\uff90ion and negative\uffe2\uff80\uff90ion mode electrospray ionization (ESI) HRMS analyses. The instruments identified ~1000 common ions in both negative\uffe2\uff80\uff90 and positive\uffe2\uff80\uff90ion modes over a wide range of m/z values and chemical space, as determined by van Krevelen diagrams. Calculated metrics of abundance\uffe2\uff80\uff90weighted average indices (H/C, O/C, aromaticity, and m/z) of the commonly detected ions showed that hydrogen saturation and aromaticity were consistent for each reference sample across the instruments, while average mass and oxygenation were more affected by differences in instrument type and settings. In this paper we present 32 metric values for future benchmarking. The metric values were obtained for the four different parameters from four samples in two ionization modes and can be used in future work to evaluate the performance of HRMS instruments.This article aims at showing the usefulness of fluoropolymers (FPs), supplying an overview of their synthesis, applications, and recycling. FPs are currently prepared by conventional radical polymerization of fluoromonomers. These specialty polymers, produced in low tonnage compared to that of commodity ones, display outstanding properties, such as chemical, oxidative, and thermal resistances, low refractive index, dissipation factor, permittivity, and water absorptivity, and excellent weatherability and durability. More recent routes for their preparations are suggested, controlled or not, leading to random, alternated, block, graft, dendrimers, or multiarm copolymers, as well as their applications ranging from coatings to high performance (thermoplastic) elastomers, energy related\uffe2\uff80\uff90materials (e.g., fuel cell membranes, components for lithium\uffe2\uff80\uff90ion batteries, electroactive devices, and photovoltaics) to original and surfactants, optical devices, organic electronics, composites, and shape memory polymers.The combination of plant residues with inorganic fertiliser\uffe2\uff80\uff90N provides the potential to increase N\uffe2\uff80\uff90use efficiency in agricultural fruit production systems, such as olive orchards. The development of weeds in the inter\uffe2\uff80\uff90canopy area of olive orchards is encouraged as a novel strategy to reduce soil erosion. However, little is known about soil N retention or N2O production following the combined application of inorganic\uffe2\uff80\uff90N with the mulched weed residues.
METHODSEmissions of 15N\uffe2\uff80\uff90N2O and soil mineral 15N retention were measured following combined applications of 15N\uffe2\uff80\uff90labelled fertiliser and a range of olive crop weed residues to a silty loam soil under controlled conditions. These plant residues differed in their C:N ratios, lignin and polyphenol contents.
RESULTSThe magnitude of soil 15N\uffe2\uff80\uff90NO3\uffe2\uff80\uff93 retention from combining plant residues and fertiliser\uffe2\uff80\uff90N was highly dependent on potential N mineralisation (r\uffe2\uff80\uff89=\uffe2\uff80\uff89\uffe2\uff88\uff920.96) and the (lignin\uffe2\uff80\uff89+\uffe2\uff80\uff89polyphenol)\uffe2\uff80\uff90to\uffe2\uff80\uff90N ratio (r\uffe2\uff80\uff89=\uffe2\uff80\uff890.98) of the residues. Fertiliser\uffe2\uff80\uff90N\uffe2\uff80\uff90derived retention was zero for a legume\uffe2\uff80\uff90based mulch but up to 80% in the treatment containing plant residues with a high (lignin\uffe2\uff80\uff89+\uffe2\uff80\uff89polyphenol)\uffe2\uff80\uff90to\uffe2\uff80\uff90N ratio. N2O emissions increased after the addition of residues, and increased further (up to 128%) following the combined application of inorganic fertiliser and residues. Fertiliser\uffe2\uff80\uff90derived 15N\uffe2\uff80\uff90N2O was <1.4% of the total 14+15N\uffe2\uff80\uff90N2O emission and <0.01% of the applied 15N\uffe2\uff80\uff90NO3\uffe2\uff80\uff93. Enhanced N2O emissions following the application of residues and the fertiliser\uffe2\uff80\uff90N values were positively correlated with the C:N ratio of the residue. Thus, combining organic\uffe2\uff80\uff90 and inorganic\uffe2\uff80\uff90N immobilised a significant proportion of the inorganic N with little increase in N2O, especially in low C:N ratio residues.
CONCLUSIONSThe results demonstrate that whilst there is potential for N2O emissions to be controlled by combining weed residues and inorganic fertilisers, this is not easy to achieve as the magnitude and direction of interactions vary between different species due to their varying substrate qualities. Copyright \uffc2\uffa9 2012 John Wiley & Sons, Ltd.
", "keywords": ["2. Zero hunger", "Nitrogen", "Chemistry", " Analytical", "Nitrous Oxide", "04 agricultural and veterinary sciences", "15. Life on land", "Plants", "01 natural sciences", "6. Clean water", "Biochemical Research Methods", "0104 chemical sciences", "Soil", "13. Climate action", "Soil Pollutants", "0401 agriculture", " forestry", " and fisheries", "Fertilizers", "Spectroscopy", "Environmental Monitoring"]}, "links": [{"href": "https://doi.org/10.1002/rcm.6254"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Rapid%20Communications%20in%20Mass%20Spectrometry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1002/rcm.6254", "name": "item", "description": "10.1002/rcm.6254", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1002/rcm.6254"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2012-09-10T00:00:00Z"}}, {"id": "10.1002/rcm.8478", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:14:21Z", "type": "Journal Article", "created": "2019-05-07", "title": "Determination of the triple oxygen and carbon isotopic composition of CO 2 from atomic ion fragments formed in the ion source of the 253 Ultra high\u2010resolution isotope ratio mass spectrometer", "description": "RationaleDetermination of \uffce\uffb417O values directly from CO2 with traditional gas source isotope ratio mass spectrometry is not possible due to isobaric interference of 13C16O16O on 12C17O16O. The methods developed so far use either chemical conversion or isotope equilibration to determine the \uffce\uffb417O value of CO2. In addition, \uffce\uffb413C measurements require correction for the interference from 12C17O16O on 13C16O16O since it is not possible to resolve the two isotopologues.
MethodsWe present a technique to determine the \uffce\uffb417O, \uffce\uffb418O and \uffce\uffb413C values of CO2 from the fragment ions that are formed upon electron ionization in the ion source of the Thermo Scientific 253 Ultra high\uffe2\uff80\uff90resolution isotope ratio mass spectrometer (hereafter 253 Ultra). The new technique is compared with the CO2\uffe2\uff80\uff90O2 exchange method and the 17O\uffe2\uff80\uff90correction algorithm for \uffce\uffb417O and \uffce\uffb413C values, respectively.
ResultsThe scale contractions for \uffce\uffb413C and \uffce\uffb418O values are slightly larger for fragment ion measurements than for molecular ion measurements. The \uffce\uffb417O and \uffce\uff9417O values of CO2 can be measured on the 17O+ fragment with an internal error that is a factor 1\uffe2\uff80\uff932 above the counting statistics limit. The ultimate precision depends on the signal intensity and on the total time that the 17O+ beam is monitored; a precision of 14\uffe2\uff80\uff89ppm (parts per million) (standard error of the mean) was achieved in 20\uffe2\uff80\uff89hours at the University of G\uffc3\uffb6ttingen. The \uffce\uff9417O measurements with the O\uffe2\uff80\uff90fragment method agree with the CO2\uffe2\uff80\uff90O2 exchange method over a range of \uffce\uff9417O values of \uffe2\uff88\uff920.3 to +0.7\uffe2\uff80\uffb0.
ConclusionsIsotope measurements on atom fragment ions of CO2 can be used as an alternative method to determine the carbon and oxygen isotopic composition of CO2 without chemical processing or corrections for mass interferences.
", "keywords": ["550", "NITROUS-OXIDE", "O-17/O-16", "ANALYTICAL SYSTEM", "01 natural sciences", "O-2", "0104 chemical sciences", "O-17 CORRECTION", "HIGH-PRECISION MEASUREMENTS", "13. Climate action", "Life Science", "ABUNDANCE", "DELTA-O-17", "EXCHANGE", "DIOXIDE", "Research Articles", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://onlinelibrary.wiley.com/doi/pdf/10.1002/rcm.8478"}, {"href": "https://doi.org/10.1002/rcm.8478"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Rapid%20Communications%20in%20Mass%20Spectrometry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1002/rcm.8478", "name": "item", "description": "10.1002/rcm.8478", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1002/rcm.8478"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-08-05T00:00:00Z"}}, {"id": "10.1007/s00216-019-01895-y", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:14:34Z", "type": "Journal Article", "created": "2019-06-10", "title": "Simultaneous determination of multiclass antibiotics and their metabolites in four types of field-grown vegetables", "description": "The developed method was evaluated for the determination of 10 antibiotics belonging to four chemical classes (fluoroquinolones, sulfonamides, lincosamides, and metoxybenzylpyrimidines) and six of their metabolites in four vegetable matrices (lettuce, tomato, cauliflower, and broad beans). The reported method detection limits were sufficiently low (0.1-5.8\u00a0ng/g dry weight) to detect target compounds in vegetables under real agricultural practices. Absolute and relative recovery values ranged from 40 to 118% and from 70 to 118%, respectively, for all targeted compounds at the spike level of 100\u00a0ng/g dry weight. Regarding method precision, the highest relative standard deviation (RSD) was obtained for enrofloxacin in lettuce (20%), while for the rest of the compounds in all matrices, the RSD values were below 20% for the same spike level. Matrix effects, due to electrospray ionization, ranged from -\u200926 to 29% for 85% of all estimated values. In a field study, four of the 10 targeted antibiotics were detected in tested vegetables. For the first time, antibiotic metabolites were quantified in vegetables grown under real field conditions. More specifically, decarboxyl ofloxacin and TMP304 were detected in tomato fruits (1.5\u00a0ng/g dry weight) and lettuce leaves (21.0-23.1\u00a0ng/g dry weight), respectively. It is important to remark that the concentration of TMP304 was five times higher than that from the parental compound, emphasizing the importance of metabolite analysis in monitoring studies. Therefore, the method provided a robust, reliable, and simple-to-use tool that could prove useful for routine multiclass analysis of antibiotics and their metabolites in vegetable samples. Graphical abstract.", "keywords": ["Crops", " Agricultural", "2. Zero hunger", "Spectrometry", " Mass", " Electrospray Ionization", "Agricultural Irrigation", "Solid Phase Extraction", "Reproducibility of Results", "LC-ESI-MS/MS", "01 natural sciences", "Anti-Bacterial Agents", "0104 chemical sciences", "3. Good health", "Antibiotics", "Limit of Detection", "Ultrasound-assisted extraction", "Vegetables", "Metabolites", "Chromatography", " Liquid", "0105 earth and related environmental sciences"], "contacts": [{"organization": "Tadi\u0107, \u0110or\u0111e, Matamoros, V\u00edctor, Bayona, Josep M.,", "roles": ["creator"]}]}, "links": [{"href": "http://link.springer.com/content/pdf/10.1007/s00216-019-01895-y.pdf"}, {"href": "https://doi.org/10.1007/s00216-019-01895-y"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Analytical%20and%20Bioanalytical%20Chemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s00216-019-01895-y", "name": "item", "description": "10.1007/s00216-019-01895-y", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00216-019-01895-y"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-06-10T00:00:00Z"}}, {"id": "10.1007/s00216-016-9509-9", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-04-04T16:14:33Z", "type": "Journal Article", "created": "2016-04-19", "title": "Drift correction of the dissolved signal in single particle ICPMS", "description": "A method is presented where drift, the random fluctuation of the signal intensity, is compensated\u00a0for based on the estimation of the drift function by a moving average. It was shown using single particle ICPMS (spICPMS) measurements of 10 and 60 nm Au NPs that drift reduces accuracy of spICPMS analysis at the calibration stage and during calculations of the particle size distribution (PSD), but that the present method can again correct the average signal intensity as well as the signal distribution of particle-containing samples skewed by drift. Moreover, deconvolution, a method that models signal distributions of dissolved signals, fails in some cases when using standards and samples affected by drift, but the present method was shown to improve accuracy again. Relatively high particle signals have to be removed prior to drift correction in this procedure, which was done using a 3 \u00d7 sigma method, and the signals are treated separately and added again. The method can also correct for flicker noise that increases when signal intensity is increased because of drift. The accuracy was improved in many cases when flicker correction was used, but when accurate results were obtained despite drift, the correction procedures did not reduce accuracy. The procedure may be useful to extract results from experimental runs that would otherwise have to be run again. Graphical Abstract A method is presented where a spICP-MS signal affected by drift (left) is corrected (right) by adjusting the local (moving) averages (green) and standard deviations (purple) to the respective values at a reference time (red). In combination with removing particle events (blue) in the case of calibration standards, this method is shown to obtain particle size distributions where that would otherwise be impossible, even when the deconvolution method is used to discriminate dissolved and particle signals.", "keywords": ["01 natural sciences", "0104 chemical sciences"]}, "links": [{"href": "http://link.springer.com/content/pdf/10.1007/s00216-016-9509-9"}, {"href": "https://doi.org/10.1007/s00216-016-9509-9"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Analytical%20and%20Bioanalytical%20Chemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s00216-016-9509-9", "name": "item", "description": "10.1007/s00216-016-9509-9", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00216-016-9509-9"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2016-04-19T00:00:00Z"}}, {"id": "10.1007/s00289-022-04193-3", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-04-04T16:14:36Z", "type": "Journal Article", "created": "2022-04-09", "title": "Development of the hydrophilic additive by suspension copolymerisation of methacrylic acid with isodecyl methacrylate for easy-to-clean coatings", "keywords": ["02 engineering and technology", "0210 nano-technology", "01 natural sciences", "0104 chemical sciences"], "contacts": [{"organization": "P. B. Bamane, R. N. Jagtap,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1007/s00289-022-04193-3"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Polymer%20Bulletin", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s00289-022-04193-3", "name": "item", "description": "10.1007/s00289-022-04193-3", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00289-022-04193-3"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-04-09T00:00:00Z"}}, {"id": "10.1007/s10118-018-2023-0", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-04-04T16:14:50Z", "type": "Journal Article", "created": "2018-03-09", "title": "In-line Plasma-induced Graft-copolymerization of Pentaerythritol Triacrylate onto Polypropylene", "description": "Pentaerythritol triacrylate (PETA) was successfully grafted onto the plasma-treated isotactic polypropylene (iPP) via the in situ melt processing. The X-ray photoelectron spectroscopy (XPS) results showed that the hydroxyl and carbonyl groups, and peroxides could be generated via plasma treatment. The content of free radical in plasma-treated iPP (PiPP) was measured by 2,2-diphenyl-1-picrylhydrazyl (DPPH). It was found that the resulting peroxides induced the grafting copolymerization of PETA onto iPP, and the grafted PETA promoted the formation of \u03b2-crystal in PiPP, which was evidenced by Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC) and wide-angle X-ray diffraction (WAXD) measurements, respectively.", "keywords": ["2. Zero hunger", "02 engineering and technology", "0210 nano-technology", "01 natural sciences", "3. Good health", "0104 chemical sciences"], "contacts": [{"organization": "Gui-Qiu Ma, Guan-Kai Sun, Zhe Ma, Jing-Qing Li, Jing Sheng,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1007/s10118-018-2023-0"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Chinese%20Journal%20of%20Polymer%20Science", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s10118-018-2023-0", "name": "item", "description": "10.1007/s10118-018-2023-0", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10118-018-2023-0"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-03-06T00:00:00Z"}}, {"id": "10.1007/s00604-005-0340-9", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-04-04T16:14:46Z", "type": "Journal Article", "created": "2005-04-01", "title": "Determination of La, Eu and Yb in Water Samples by Inductively Coupled Plasma Atomic Emission Spectrometry After Solid Phase Extraction of Their 1-Phenyl-3-Methyl-4-Benzoylpyrazol-5-one Complexes on Silica Gel Column", "description": "A simple preconcentration method has been developed for the determination of trace amounts of rare earth elements (La, Eu, and Yb) in natural water samples by inductively coupled plasma atomic emission spectrometry (ICP-AES). Preconcentration of La, Eu, and Yb was achieved by sorption of their 1-phenyl-3-methyl-4-benzoylpyrazol-5-one (PMBP) complexes on a silica gel column at pH 5 and then eluting with 1.0 mol L\u22121 HNO3. For the preconcentration of 100 mL of aqueous solution, an enrichment of 100 was obtained for all analytes, and the detection limits for La, Eu and Yb were 82, 34 and 45 ng L\u22121, respectively. The accuracy of this method was demonstrated by analyzing a standard reference material. The method has been successfully applied to the determination of La, Eu and Yb in lake water and synthetic seawater.", "keywords": ["01 natural sciences", "6. Clean water", "0104 chemical sciences"], "contacts": [{"organization": "Pei Liang, Wenjun Fa,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1007/s00604-005-0340-9"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Microchimica%20Acta", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s00604-005-0340-9", "name": "item", "description": "10.1007/s00604-005-0340-9", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00604-005-0340-9"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2005-04-04T00:00:00Z"}}, {"id": "10.1007/s00604-016-2045-7", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-04-04T16:14:46Z", "type": "Journal Article", "created": "2016-12-09", "title": "A fluorescent glucose bioassay based on the hydrogen peroxide-induced decomposition of a quencher system composed of MnO2 nanosheets and copper nanoclusters", "description": "The authors describe a fluorometric glucose assay that is based on the use of MnO2 nanosheets and copper nanoclusters (CuNCs) acting as nanoprobes. The CuNCs were synthesized by using bovine serum albumin as a template by chemical reduction of copper(II) sulfate. On addition of MnO2 nanosheets to a colloidal solution of CuNCs, the fluorescence of CuNCs (measured at excitation/emission wavelengths of 335/410\u00a0nm) is quenched. However, in the presence of enzymatically generated H2O2, the MnO2 nanosheets are reduced to form Mn(II) ions. As a result, fluorescence intensity recovers. The glucose assay is based on the enzymatic conversion of glucose by glucose oxidase to generate H2O2 and glucuronic acid. The calibration plot is linear in the 1\u00a0\u03bcM to 200\u00a0\u03bcM glucose concentration range, and the detection limit is 100\u00a0nM. The method was successfully applied to the determination of glucose in spiked human serum samples.", "keywords": ["02 engineering and technology", "0210 nano-technology", "01 natural sciences", "0104 chemical sciences"], "contacts": [{"organization": "Hai-Bo Wang, Ying Chen, Na Li, Yan-Ming Liu,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1007/s00604-016-2045-7"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Microchimica%20Acta", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s00604-016-2045-7", "name": "item", "description": "10.1007/s00604-016-2045-7", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s00604-016-2045-7"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2016-12-09T00:00:00Z"}}, {"id": "10.1016/j.bioelechem.2021.107937", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-04-04T16:15:52Z", "type": "Journal Article", "created": "2021-08-21", "title": "Nanoscaffold effects on the performance of air-cathodes for microbial fuel cells: Sustainable Fe/N-carbon electrocatalysts for the oxygen reduction reaction under neutral pH conditions", "description": "Nanostructured electrocatalysts for microbial fuel cell air-cathodes were obtained via use of conductive carbon blacks for the synthesis of high performing 3D conductive networks. We used two commercially available nanocarbons, Black Pearls 2000 and multiwalled carbon nanotubes, as conductive scaffolds for the synthesis of nanocomposite electrodes by combining: a hydrothermally carbonized resin, a sacrificial polymeric template, a nitrogenated organic precursor and iron centers. The resulting materials are micro-mesoporous, possess high specific surface area and display N-sites (N/C of 3-5 at%) and Fe-centers (Fe/C\u00a0<\u00a01.5at.%) at the carbon surface as evidenced from characterization methods. Voltammetry studies of oxygen reduction reaction activity were carried out at neutral pH, which is relevant to microbial fuel cell applications, and activity trends are discussed in light of catalyst morphology and composition. Tests of the electrocatalyst using microbial fuel cell devices indicate that optimization of the nanocarbon scaffold for the Pt-free carbon-based electrocatalysts results in maximum power densities that are 25% better than those of Pt/C cathodes, at a fraction of the materials costs. Therefore, the proposed Fe/N-carbon catalysts are promising and sustainable high-performance cathodic materials for microbial fuel cells.", "keywords": ["Bioelectric Energy Sources", "Nanotubes", " Carbon", "Microbial fuel cells", "Electric Conductivity", "7. Clean energy", "01 natural sciences", "Carbon", "Catalysis", "Oxygen reduction reaction", "[PHYS] Physics [physics]", "12. Responsible consumption", "0104 chemical sciences", "Air cathode; Carbon; Electrocatalysis; Microbial fuel cells; Oxygen reduction reaction", "13. Climate action", "[CHIM] Chemical Sciences", "Air cathode", "Electrocatalysis"]}, "links": [{"href": "https://air.unimi.it/bitstream/2434/868457/2/1-s2.0-S1567539421002000-main.pdf"}, {"href": "https://doi.org/10.1016/j.bioelechem.2021.107937"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Bioelectrochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.bioelechem.2021.107937", "name": "item", "description": "10.1016/j.bioelechem.2021.107937", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.bioelechem.2021.107937"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2021-12-01T00:00:00Z"}}, {"id": "10.1007/s10924-020-01801-z", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-04-04T16:15:03Z", "type": "Journal Article", "created": "2020-06-27", "title": "Preparation and Characterization of Electrospun Polyurethane Nanofibrous Microfiltration Membrane", "description": "Herein, the preparation of polyurethane nanofibrous microfiltration membranes, with electrospinning and then dip-coating methods was reported. The study of process parameters (i.e. needle-free electrospinning and dip-coating condition) on the membrane properties was also conducted. The different pore sizes of the prepared MF membranes (e.g. 0.23, 0.33, and 0.47\u00a0\u03bcm) is orchestrated through the adjustment of various electrospinning and dip-coating parameters. The capability of these membranes to simultaneously eliminate the sources of water pollution, i.e. micro-particles and bacteria, has been demonstrated. Specifically, the prepared membranes could thoroughly reject the E. coli BL21 (DE3) bacteria (~\u200997\u201399%) as well as micro-particles through size extrusion mechanism (~\u200995\u201399%), while they retained a high permeation flux (~\u200965,400,\u2009~\u200940,000 and\u2009~\u200925,700 (L/m2\u00a0h\u00a0bar) for 0.46, 0.33, and 0.25\u00a0\u03bcm pore size, respectively). In addition, a comparison between nanofibrous MF membranes and their commercial counterparts from both utility and effectiveness standpoint was conducted and the obtained result indicated the supreme performance of these membranes in comparison with the commercial membranes of the same mean pore size, also with almost double or triple higher flux.", "keywords": ["02 engineering and technology", "0210 nano-technology", "01 natural sciences", "6. Clean water", "0104 chemical sciences"]}, "links": [{"href": "https://doi.org/10.1007/s10924-020-01801-z"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Polymers%20and%20the%20Environment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s10924-020-01801-z", "name": "item", "description": "10.1007/s10924-020-01801-z", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10924-020-01801-z"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-06-27T00:00:00Z"}}, {"id": "10.1007/s10853-014-8308-y", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-04-04T16:15:03Z", "type": "Journal Article", "created": "2014-05-22", "title": "Review: the characterization of electrospun nanofibrous liquid filtration membranes", "description": "Electrospun nanofibrous membranes (ENMs) are used in a variety of applications, including sensors, tissue engineering, air filtration, energy, and reinforcement in composite materials. Recently, they have gained an interest in the field of liquid filtration. The membranes, surface, bulk, and overall architecture play an important role in the filtration properties and hence the right characterization technique needs to be established, which will pave the way for future developments in the field of filtration. In this article, we have reviewed the recent advances in ENMs for liquid separation application.", "keywords": ["02 engineering and technology", "0210 nano-technology", "01 natural sciences", "3. Good health", "0104 chemical sciences"]}, "links": [{"href": "https://doi.org/10.1007/s10853-014-8308-y"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Materials%20Science", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s10853-014-8308-y", "name": "item", "description": "10.1007/s10853-014-8308-y", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10853-014-8308-y"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2014-05-23T00:00:00Z"}}, {"id": "10.1007/s10924-020-01884-8", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-04-04T16:15:03Z", "type": "Journal Article", "created": "2020-09-19", "title": "Upcycling of Vine Shoots: Production of Fillers for PHBV-Based Biocomposite Applications", "description": "AbstractThis paper aims at investigating the potential of vine shoots (ViSh) upcycling as fillers in novel poly(3-hydroxybutyrate-3-hydroxyvalerate) (PHBV) based biocomposites. ViSh particles of around 50\uffc2\uffa0\uffc2\uffb5m (apparent median diameter) were obtained combining dry grinding processes, and mixed with PHBV using melt extrusion. Thermal stability and elongation at break of biocomposites were reduced with increasing contents of ViSh particles (10, 20 and 30\uffc2\uffa0wt%), while Young\uffe2\uff80\uff99s modulus and water vapor permeability were increased. It was shown that a surface gas-phase esterification allowed to significantly increase the hydrophobicity of ViSh particles (increase of water contact angles from 59\uffc2\uffb0 to 114\uffc2\uffb0), leading to a reduction of 27% in the water vapor permeability of the biocomposite filled with 30\uffc2\uffa0wt% of ViSh. The overall mechanical performance was not impacted by gas-phase esterification, demonstrating that the interfacial adhesion between the virgin ViSh particles and the PHBV matrix was already good and that such filler surface treatment was not required in that case. It was concluded that ViSh particles can be interestingly used as low cost fillers in PHBV-based biocomposites to decrease the overall cost of materials.
", "keywords": ["660", "[SDV.IDA]Life Sciences [q-bio]/Food engineering", "02 engineering and technology", "[SDV.IDA] Life Sciences [q-bio]/Food engineering", "0210 nano-technology", "01 natural sciences", "620", "0104 chemical sciences"]}, "links": [{"href": "https://link.springer.com/content/pdf/10.1007/s10924-020-01884-8.pdf"}, {"href": "https://doi.org/10.1007/s10924-020-01884-8"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Journal%20of%20Polymers%20and%20the%20Environment", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s10924-020-01884-8", "name": "item", "description": "10.1007/s10924-020-01884-8", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s10924-020-01884-8"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-09-19T00:00:00Z"}}, {"id": "10.1007/s11172-015-0888-4", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-04-04T16:15:16Z", "type": "Journal Article", "created": "2015-10-19", "title": "Synthesis of structural analogs of epibatidine", "description": "A convenient one-step method for the preparation of 8-azabicyclo[3.2.1]octan-3-one derivatives, analogs of epibatidine, was suggested, which consists in the reaction of succinic aldehyde with heterocyclic amines and acetonedicarboxylic acid in the presence of sodium hydrogen phosphate.", "keywords": ["01 natural sciences", "3. Good health", "0104 chemical sciences"], "contacts": [{"organization": "I. Yu. Babkin, G. V. Nazarov, S. E. Galan, O. P. Yudina, A. Yu. Lamanov, M. V. Gutsalyuk, A. V. Aksenov,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1007/s11172-015-0888-4"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Russian%20Chemical%20Bulletin", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s11172-015-0888-4", "name": "item", "description": "10.1007/s11172-015-0888-4", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s11172-015-0888-4"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2015-02-01T00:00:00Z"}}, {"id": "10.1007/s42452-019-0552-y", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-04-04T16:15:26Z", "type": "Journal Article", "created": "2019-05-08", "title": "HS2 railway embankment monitoring: effect of soil condition on underground signals", "description": "High speed rail demands precision structural health monitoring in shallow underground environments near embankments. Traditional low frequency wireless channels can communicate with underground sensors, but its large antenna elements are prone to damage from geological stress. In this case study paper, we design a higher frequency compact system and experimentally characterize its performance in-situ, in different soil and moisture conditions that are representative of UK soil conditions near the planned HS2 rail site and weather conditions. Accurate 3D electromagnetic simulation results are also shown to support experimental results and a pathloss model sensitive to soil conditions is developed to inform upcoming high speed rail embankment monitoring deployment. The multi-disciplinary findings presented will also directly inform the depth and data reliability of current high speed rail sensor deployment.", "keywords": ["TA", "TK", "02 engineering and technology", "0210 nano-technology", "TC", "7. Clean energy", "01 natural sciences", "TF", "TE", "0104 chemical sciences"]}, "links": [{"href": "http://wrap.warwick.ac.uk/116641/8/WRAP-HS2-railway-embankment-monitoring-effect-soil-condition-underground-signals-Guo-2019.pdf"}, {"href": "http://link.springer.com/content/pdf/10.1007/s42452-019-0552-y.pdf"}, {"href": "https://doi.org/10.1007/s42452-019-0552-y"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/SN%20Applied%20Sciences", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1007/s42452-019-0552-y", "name": "item", "description": "10.1007/s42452-019-0552-y", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1007/s42452-019-0552-y"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-05-08T00:00:00Z"}}, {"id": "10.1016/0013-4686(94)85137-9", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:15:27Z", "type": "Journal Article", "created": "2002-07-25", "title": "Electrochemical behaviour of NiCo2 \u2212 xRhxO4 spinel system", "description": "Abstract The effect of the rhodium content of the electrochemical behaviour of electrodes with nominal composition NiCo 2\u2212 x Rh x O 4 (0 \u2a7d x \u2a7d 0.5), was investigated. The electrodes were prepared by thermal decomposition on a nickel mesh support at 500\u00b0C and characterized by X-ray powder diffraction, SEM and BET surface area measurements. The electrochemical behaviour was studied by cyclic voltammetry in 5 mol dm \u22123 KOH aqueous solution at room temperature. An estimation of the electrode's capacity has been worked out from the charging currents. From steady-state measurements Tafel slopes for oxygen evolution were determined and a two Tafel slope mechanism was observed. The analysis of the results reveals that the Rh has no appreciable influence on the values of the Tafel slopes.", "keywords": ["02 engineering and technology", "0210 nano-technology", "01 natural sciences", "7. Clean energy", "0104 chemical sciences"]}, "links": [{"href": "https://doi.org/10.1016/0013-4686(94)85137-9"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Electrochimica%20Acta", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/0013-4686(94)85137-9", "name": "item", "description": "10.1016/0013-4686(94)85137-9", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/0013-4686(94)85137-9"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1994-08-01T00:00:00Z"}}, {"id": "10.1016/0039-6028(95)00810-1", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-04-04T16:15:27Z", "type": "Journal Article", "created": "2002-07-25", "title": "Erratum to \u201cTemperature-programmed evolution of low-energy, rare-gas ions implanted in Si(100)\u201d [Surface Science 330 (1995) L633\u2013L638]", "keywords": ["02 engineering and technology", "0210 nano-technology", "01 natural sciences", "0104 chemical sciences"], "contacts": [{"organization": "Mark R. Tesauro, Grant Underwood, B.K. Kellerman, Alan Campion,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1016/0039-6028(95)00810-1"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Surface%20Science", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/0039-6028(95)00810-1", "name": "item", "description": "10.1016/0039-6028(95)00810-1", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/0039-6028(95)00810-1"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "1995-10-01T00:00:00Z"}}, {"id": "10.1016/j.bioelechem.2020.107621", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:15:52Z", "type": "Journal Article", "created": "2020-07-27", "title": "Tailored glycosylated anode surfaces: Addressing the exoelectrogen bacterial community via functional layers for microbial fuel cell applications", "description": "Grafting of aryldiazonium cations bearing a p-mannoside functionality over microbial fuel cell (MFC) anode materials was performed to investigate the ability of aryl-glycoside layers to regulate colonisation by biocatalytic biofilms. Covalent attachment was achieved via spontaneous reactions and via electrochemically-assisted grafting using potential step experiments. The effect of different functionalisation protocols on MFC performance is discussed in terms of changes in wettability, roughness and electrochemical response of modified electrodes. Water contact angle measurements (WCA) show that aryl-mannoside grafting yields a significant increase in hydrophilic character. Surface roughness determinations via atomic force microscopy (AFM) suggest a more disordered glycan adlayer when electrografting is used to facilitate chemisorption. MFCs were used as living sensors to successfully test the coated electrodes: the response of the MFCs in terms of start-up time was accelerated when compared to that of MFC equipped with non-modified electrodes, this suggests a faster development of a mature biofilm community resulting from aryldiazonium modifications, as confirmed by cyclic voltammetry of MFC anodes. These results therefore indicate that modification with glycans offers a bioinspired route to accelerating biofilm colonisation without any adverse effects on final MFC outputs.", "keywords": ["Microbial fuel cell", "Glycosylation", "Bacteria", "Bioelectric Energy Sources", "Surface Properties", "Microbiota", "02 engineering and technology", "Exoelectrogen biofilms", "540", "01 natural sciences", "7. Clean energy", "[SDV.BIO] Life Sciences [q-bio]/Biotechnology", "0104 chemical sciences", "Electricity", "[CHIM.OTHE] Chemical Sciences/Other", "Biofilms", "Aryl-mannoside layers", "Glycan adlayers", "0210 nano-technology", "Electrodes"]}, "links": [{"href": "https://doi.org/10.1016/j.bioelechem.2020.107621"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Bioelectrochemistry", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.bioelechem.2020.107621", "name": "item", "description": "10.1016/j.bioelechem.2020.107621", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.bioelechem.2020.107621"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-12-01T00:00:00Z"}}, {"id": "10.1016/j.carbpol.2018.06.009", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-04-04T16:15:55Z", "type": "Journal Article", "created": "2018-06-04", "title": "Thermal conductivity, structure and mechanical properties of konjac glucomannan/starch based aerogel strengthened by wheat straw", "description": "This study presents the preparation and property characterization of a konjac glucomannan (KGM)/starch based aerogel as a thermal insulation material. Wheat straw powders (a kind of agricultural waste) and starch are used to enhance aerogel physical properties such as mechanical strength and pore size distribution. Aerogel samples were made using environmentally friendly sol-gel and freeze drying methods. Results show that starch addition could strengthen the mechanical strength of aerogel significantly, and wheat straw addition could decrease aerogel pore size due to its special micron-cavity structure, with appropriate gelatin addition as the stabilizer. The aerogel formula was optimized to achieve lowest thermal conductivity and good thermal stability. Within the experimental range, aerogel with the optimized formula had a thermal conductivity 0.04641\u202fWm-1\u202fK-1, a compression modulus 67.5\u202fkPa and an elasticity 0.27. The results demonstrate the high potential of KGM/starch based aerogels enhanced with wheat straw for application in thermal insulation.", "keywords": ["02 engineering and technology", "0210 nano-technology", "01 natural sciences", "0104 chemical sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.carbpol.2018.06.009"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Carbohydrate%20Polymers", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.carbpol.2018.06.009", "name": "item", "description": "10.1016/j.carbpol.2018.06.009", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.carbpol.2018.06.009"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-10-01T00:00:00Z"}}, {"id": "10.1016/j.carbpol.2019.115242", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-04-04T16:15:55Z", "type": "Journal Article", "created": "2019-08-23", "title": "The advances of polysaccharide-based aerogels: Preparation and potential application", "description": "Polysaccharide-based aerogels have high application value as one kind of unique functional materials. Not only has it high porosity and low-density, but also the non-toxicity and biodegradability. In recent decades, a variety of natural raw materials and their combinations along with various preparation technologies have been investigated to develop polysaccharide-based aerogels with different functions for diverse applications. This review aims to clarify a general approach in the development of polysaccharide-based aerogels regarding pore structure design, polysaccharide selection and drying methods. The relevant researches and reports of polysaccharide-based aerogels have been also classified according to the applications in environmental engineering, buildings, medical practice, packaging and electrochemistry. Furthermore, some statistical graphs have been produced to summarize those publications during the past ten years, with an aim to indicate the distribution and research trend. Finally, the approaches to improve the quality of the aerogels are discussed and some perspectives are put forward to provide a reference for the future development of polysaccharide-based aerogels.", "keywords": ["02 engineering and technology", "0210 nano-technology", "01 natural sciences", "0104 chemical sciences"], "contacts": [{"organization": "Fatang Jiang, Fatang Jiang, Yixin Wang, Weiling Wang, Ying Fang, Yuehong Su, Saffa Riffat,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1016/j.carbpol.2019.115242"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Carbohydrate%20Polymers", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.carbpol.2019.115242", "name": "item", "description": "10.1016/j.carbpol.2019.115242", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.carbpol.2019.115242"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-12-01T00:00:00Z"}}, {"id": "10.1016/j.bios.2021.113890", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:15:55Z", "type": "Journal Article", "created": "2021-12-16", "title": "Real-time detection of ochratoxin A in wine through insight of aptamer conformation in conjunction with graphene field-effect transistor", "description": "Mycotoxins comprise a frequent type of toxins present in food and feed. The problem of mycotoxin contamination has been recently aggravated due to the increased complexity of the farm-to-fork chains, resulting in negative effects on human and animal health and, consequently, economics. The easy-to-use, on-site, on-demand, and rapid monitoring of mycotoxins in food/feed is highly desired. In this work, we report on an advanced mycotoxin biosensor based on an array of graphene field-effect transistors integrated on a single silicon chip. A specifically designed aptamer against Ochratoxin A (OTA) was used as a recognition element, where it was covalently attached to graphene surface via pyrenebutanoic acid, succinimidyl ester (PBASE) chemistry. Namely, an electric field stimulation was used to promote more efficient \u03c0-\u03c0 stacking of PBASE to graphene. The specific G-rich aptamer strand suggest its \u03c0-\u03c0 stacking on graphene in free-standing regime and reconfiguration in G-quadruplex during binding an OTA molecule. This realistic behavior of the aptamer is sensitive to the ionic strength of the analyte solution, demonstrating a 10-fold increase in sensitivity at low ionic strengths. The graphene-aptamer sensors reported here demonstrate fast assay with the lowest detection limit of 1.4 pM for OTA within a response time as low as 10 s, which is more than 30 times faster compared to any other reported aptamer-based methods for mycotoxin detection. The sensors hold comparable performance when operated in real-time within a complex matrix of wine without additional time-consuming pre-treatment.", "keywords": ["Condensed Matter - Materials Science", "Condensed Matter - Mesoscale and Nanoscale Physics", "Materials Science (cond-mat.mtrl-sci)", "FOS: Physical sciences", "Wine", "Biosensing Techniques", "02 engineering and technology", "Aptamers", " Nucleotide", "Ochratoxins", "01 natural sciences", "3. Good health", "0104 chemical sciences", "Limit of Detection", "Mesoscale and Nanoscale Physics (cond-mat.mes-hall)", "Animals", "Humans", "Graphite", "0210 nano-technology"]}, "links": [{"href": "https://doi.org/10.1016/j.bios.2021.113890"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Biosensors%20and%20Bioelectronics", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.bios.2021.113890", "name": "item", "description": "10.1016/j.bios.2021.113890", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.bios.2021.113890"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-03-01T00:00:00Z"}}, {"id": "10.1016/j.bios.2020.112231", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:15:55Z", "type": "Journal Article", "created": "2020-04-23", "title": "Active N dopant states of electrodes regulate extracellular electron transfer of Shewanella oneidensis MR-1 for bioelectricity generation: Experimental and theoretical investigations", "description": "Anodic N doping is an effective way to improve power generation of bioelectrochemical systems (BESs), but the role of various active N dopant states of the anode on BES performance is still unclear. Herein, the effect of anodic active N dopant states on bioelectricity generation of Shewanella oneidensis MR-1 inoculated BESs particularly including microbial extracellular electron transfer (EET) was explored using experiments and theoretical simulations. It was found a positive linear correlation between the peak current density of BESs and pyrrolic N content of the anode, which would mainly ascribe to the enhancement of both direct electron transfer (DET) and mediated electron transfer (MET) of S. oneidensis MR-1. Morever, the molecule dynamic simulation revealed that such EET improvements of S. oneidensis MR-1 could be due to more remarkable reduction in the thermodynamic and kinetic resistances of the DET and MET processes with anodic doping of pyrrolic N compared to pyridinic N and graphitic N. This work provides a valuable guideline to design of high-performance anodes for potential BES applications.", "keywords": ["Electron Transport", "Shewanella", "Electricity", "Bioelectric Energy Sources", "Electrons", "Pyrroles", "02 engineering and technology", "Molecular Dynamics Simulation", "0210 nano-technology", "Electrodes", "01 natural sciences", "0104 chemical sciences"], "contacts": [{"organization": "Wang, Yi-Xuan, Li, Wen-Qiang, He, Chuan-Shu, Zhao, Han-Qing, Han, Jun-Cheng, Liu, Xiao-Cheng, Mu, Yang,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.1016/j.bios.2020.112231"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Biosensors%20and%20Bioelectronics", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.bios.2020.112231", "name": "item", "description": "10.1016/j.bios.2020.112231", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.bios.2020.112231"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-07-01T00:00:00Z"}}, {"id": "10.1016/j.carbon.2019.11.020", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-04-04T16:15:55Z", "type": "Journal Article", "created": "2019-11-09", "title": "Bioinspired electro-permeable glycans on carbon: Fouling control for sensing in complex matrices", "description": "Abstract The effect of glycan adlayers on the electrochemical response of glassy carbon electrodes was studied using standard redox probes and complex aqueous matrices. Aryldiazonium cations of aryl-lactoside precursors were used to modify glassy carbon via spontaneous and electrochemically assisted covalent grafting. Contact angle and fluorescence binding using Peanut Agglutinin (PNA) as a diagnostic lectin indicate that electrografting results in adlayers with greater glycan surface density than those obtained via spontaneous reaction. X-ray photoelectron spectroscopy with a fluorinated analog confirmed that electrografting results in multilayers of cross-linked aryl-lactosides. Adsorption studies with Bovine Serum Albumin (BSA) show that aryl-lactoside adlayers minimize unspecific protein adsorption. However, no significant differences were detected between spontaneous and electrografted layers in their ability to resist protein fouling despite their differences in coverage. Voltammetry studies show that spontaneous grafting has minimal effects on the response of standard redox probes in solution, whereas electrografting results in additional charge transfer impedance arising from increased electrode passivation. Bare and lactoside-modified carbon electrodes were tested for the detection of caffeine before and after prolonged exposure to coffee solutions. Spontaneous grafting was found to result in optimal properties by imparting antifouling performance in these complex matrices while preserving fast interfacial charge transfer.", "keywords": ["Nanoscience & Materials", "GLASSY-CARBON", "GLASSY-CARBON ELECTRODES", "02 engineering and technology", "540", "01 natural sciences", "Bovine Serum Albumin (BSA)", "0104 chemical sciences", "Aqueous matrices", "CARBON", "Glassy carbon", "Coffee solutions", "Glycan adlayers", "0210 nano-technology", "Peanut Agglutinin (PNA)"]}, "links": [{"href": "https://doi.org/10.1016/j.carbon.2019.11.020"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Carbon", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.carbon.2019.11.020", "name": "item", "description": "10.1016/j.carbon.2019.11.020", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.carbon.2019.11.020"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-03-01T00:00:00Z"}}, {"id": "10.1016/j.carbon.2019.03.052", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-04-04T16:15:55Z", "type": "Journal Article", "created": "2019-03-26", "title": "Electrocatalysis of N-doped carbons in the oxygen reduction reaction as a function of pH: N-sites and scaffold effects", "description": "Abstract Metal-free nitrogenated amorphous carbon electrodes were synthesised via dc plasma magnetron sputtering and post-deposition annealing at different temperatures. The electrocatalytic activity of the electrodes towards the oxygen reduction reaction (ORR) was studied as a function of pH using cyclic voltammetry with a rotating disk electrode. The trends in onset potential were correlated to the carbon nanostructure and chemical composition of the electrodes as determined via Raman spectroscopy and X-ray photoelectron spectroscopy analysis. Results suggest that: 1) the ORR activity in acidic conditions is strongly correlated to the concentration of pyridinic nitrogen sites. 2) At high pH, the presence of graphitic nitrogen sites and a graphitized carbon scaffold are the strongest predictors of high ORR onsets, while pyridinic nitrogen site density does not correlate to ORR activity. An inversion region where pyridine-mediated activity competes with graphitic-N mediated activity is identified in the pH region close to the value of pKa of the pyridinium cation. The onset of the ORR is therefore determined by the activity of different sites as a function of pH and evidence for distinct reduction reaction pathways emerges from these results.", "keywords": ["Carbon electrodes", "Nanoscience & Materials", "02 engineering and technology", "540", "Electrocatalysis", "0210 nano-technology", "01 natural sciences", "7. Clean energy", "0104 chemical sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.carbon.2019.03.052"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Carbon", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.carbon.2019.03.052", "name": "item", "description": "10.1016/j.carbon.2019.03.052", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.carbon.2019.03.052"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-07-01T00:00:00Z"}}, {"id": "10.1016/j.carbpol.2019.115129", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-04-04T16:15:55Z", "type": "Journal Article", "created": "2019-08-01", "title": "Fabrication and characterization of a novel konjac glucomannan-based air filtration aerogels strengthened by wheat straw and okara", "description": "The konjac glucomannan (KGM)-based aerogel as an air filtration material was fabricated through sol-gel and freeze-drying methods. Results showed that gelatin and starch addition could increase the filtration efficiency and compressive strength of aerogel significantly, due to the appearance of more microporous structure and the formation of dense structure in aerogel. The addition of wheat straw could decrease the filtration resistance and increase the breathability of KGM-based aerogel, which was attributed to the multi-cavities of wheat straw. The aerogel with wheat straw had a filtration efficiency of 93.54% for particle matters \u2265 0.3\u202f\u03bcm, a filtration resistance 29\u202fPa, and an air permeability 271.42\u202fL/s\u00b7m2. Okara addition could increase the hydrophobicity of KGM-based aerogel by increasing the water contact angle and decreasing the equilibrium water content. The water contact angle of the aerogel containing okara reached 105.4\u00b0, and the equilibrium water content was decreased by 17.03%-81.10% compared with that without okara, with relative humidity 0%-80%. The results demonstrated that the KGM-based aerogel had good performance on filtration, mechanical and hydrophobic properties, indicating high potential application as an air filtration material.", "keywords": ["Polymers and Plastics", "Organic Chemistry", "Starch", "02 engineering and technology", "01 natural sciences", "0104 chemical sciences", "Mannans", "Air Filters", "Abelmoschus", "Materials Chemistry", "Gelatin", "0210 nano-technology", "Gels", "Porosity", "Triticum", "Mechanical Phenomena"]}, "links": [{"href": "https://doi.org/10.1016/j.carbpol.2019.115129"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Carbohydrate%20Polymers", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.carbpol.2019.115129", "name": "item", "description": "10.1016/j.carbpol.2019.115129", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.carbpol.2019.115129"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2019-11-01T00:00:00Z"}}, {"id": "10.1016/j.cej.2019.123017", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-04-04T16:15:58Z", "type": "Journal Article", "created": "2019-09-30", "title": "Adsorption enhanced photocatalytic degradation sulfadiazine antibiotic using porous carbon nitride nanosheets with carbon vacancies,", "description": "Abstract Residues of antibiotics are promoting antibiotic resistance of environmental microbiota which is identified as one of the most crucial global challenge for health security. Photocatalysis has been regarded as a desirable technology for organic pollutant removal, but is underappreciated in degradation of persistent organic pollutants due to the low adsorption capacity and photocatalytic efficiency of photocatalysts. In this study, a scalable photocatalyst of single/few-layered carbon nitride nanosheets with carbon vacancies (Cv-CNNs) is synthesized through a thermal process. Quantum mechanical simulation results reveal that the C vacancies can change the plane structure of CN sheets, enhancing adsorption capability of Cv-CNNs towards sulfadiazine (SDZ, a refractory antibiotic pollutant). Furthermore, the introduction of C vacancies in Cv-CNNs enhance the redox capacity, promoting photocatalytic hydrogen evolution and SDZ degradation. The removal efficiency of SDZ (5\u202fmg L\u22121) reaches almost 100% within 20\u202fmin under visible-light irradiation. In addition, the photocatalyst delivers a high H2 evolution rate of 2.03\u202fmmol\u202fh\u22121 g\u22121. The study provides a large-scale-production metal-free photocatalyst for practical application in antibiotics removal from wastewater or solar-to-hydrogen energy conversion.", "keywords": ["13. Climate action", "02 engineering and technology", "0210 nano-technology", "01 natural sciences", "6. Clean water", "0104 chemical sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.cej.2019.123017"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Chemical%20Engineering%20Journal", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.cej.2019.123017", "name": "item", "description": "10.1016/j.cej.2019.123017", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.cej.2019.123017"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2020-02-01T00:00:00Z"}}, {"id": "10.1016/j.ceramint.2018.03.181", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-04-04T16:15:58Z", "type": "Journal Article", "created": "2018-03-21", "title": "Laser sintering of screen-printed TiO2 nanoparticles for improvement of mechanical and electrical properties", "description": "\u00a9 2018 Elsevier Ltd and Techna Group S.r.l. Conducted research presents a rapid and cost-effective approach to technological processing of screen-printed films with anatase TiO2 nanoparticles, by utilizing the high fluence laser radiation. The influence of laser sintering on the screen-printed films was characterized with optical and scanning electron microscopy, energy-dispersive X-ray (EDX) spectroscopy, Raman spectroscopy, nanoindenter measurements and current vs voltage measurements. Investigation of surface morphology of screen-printed films revealed that higher laser fluences caused significant decrease in film thickness, trough evaporation of organic additives used in the paste matrix. EDX mapping of carbon content in untreated and laser sintered surface confirmed removal of organic additives. Laser sintering stimulated breaking of large agglomerates into much finer nano-sized particles and promoted formation of necking between individual grains. Crystal structure and vibrational properties of anatase TiO2 nanoparticles was monitored with Raman spectroscopy before and after laser sintering. Obtained results point out that anatase polymorph was preserved during the sintering process, without appearance of other phases. From observation of the behavior of the most intense Eg Raman active mode it was deduced that laser sintering provoked a formation of structural defects i.e. oxygen vacancies in TiO2 nanoparticles, whose concentration increased in the samples treated with higher laser fluences. Mechanical properties of untreated and laser sintered samples were investigated with nanoindenter measurements using several load forces, in order to carefully probe the Young modulus and mechanical hardness. From the analysis of collected data, we established that overall improvement of the mechanical properties with laser sintering originates from formation of very dense ceramic layer with enhanced interconnectivity between individual TiO2 nanoparticles. Measurements of current vs voltage characteristics clearly demonstrated that increase in laser fluence leads to drastic increase in current values and improvement of electric conductivity.", "keywords": ["02 engineering and technology", "0210 nano-technology", "01 natural sciences", "0104 chemical sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.ceramint.2018.03.181"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Ceramics%20International", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.ceramint.2018.03.181", "name": "item", "description": "10.1016/j.ceramint.2018.03.181", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.ceramint.2018.03.181"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-06-01T00:00:00Z"}}, {"id": "10.1016/j.dib.2024.111021", "type": "Feature", "geometry": null, "properties": {"license": "Open Access", "updated": "2026-04-04T16:16:02Z", "type": "Journal Article", "created": "2024-10-16", "title": "Data on the profile of organic contaminants in the L'Albufera Natural Park (2019\u20132020). Target and non-target screening", "description": "This article presents a dataset on 71 pesticide levels and the identification of additional synthetic organic chemicals, including pharmaceuticals and industrial compounds, in L'Albufera Natural Park (Valencia, Spain). Sampling was conducted during May-June (spring) and end of September-October (autumn) 2019, timed to the rice cultivation cycle, the region's main agricultural activity. A total of 130 samples (100 water and 30 sediments) were collected from 51 strategically selected sites, including rivers, irrigation channels, Albufera Lake, and Mediterranean outlets, utilizing a combination of targeted and non-targeted screening (NTS) methods. The dataset encompasses physical-chemical parameters for both spring and autumn seasons. Advanced analytical techniques, such as high-resolution mass spectrometry (HRMS), were employed to detect contaminants beyond traditional methods, providing critical insights for environmental management and policy development. The findings contribute to addressing gaps in knowledge regarding contaminants of emerging concern (CECs) and their distribution across different environmental compartments. These data supplement the findings of the research article 'Fingerprinting of Emerging Contaminants in L'Albufera Natural Park (Valencia, Spain): Implications for Wetland Ecosystem Health'.", "keywords": ["01 natural sciences", "Data Article", "0104 chemical sciences", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.dib.2024.111021"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Data%20in%20Brief", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.dib.2024.111021", "name": "item", "description": "10.1016/j.dib.2024.111021", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.dib.2024.111021"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2024-12-01T00:00:00Z"}}, {"id": "10.1016/j.egyr.2022.07.052", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:16:06Z", "type": "Journal Article", "created": "2022-07-26", "title": "Performance analysis and application of a hybrid electromagnetic-triboelectric nanogenerator for energy harvesting", "description": "In recent years, the possibility of harvesting the small-scale energies from the environment has been the subject of many scientific studies. Nanogenerators are emerging to be good candidates for converting the small-scale energies from the environment into electrical energy without need for battery. In this paper, a hybrid nanogenerator that integrates three different working mechanisms for conversion of mechanical energy into electrical energy is presented. The hybrid nanogenerator is composed of a zig-zag contact mode triboelectric nanogenerator (TENG), a sliding mode TENG and two electromagnetic generators (EMGs). Triboelectric surfaces are oppositely charged aluminium and Kapton layers for a zig-zag contact mode TENG and aluminium and PTFE layers for a sliding mode TENG. Aluminium layer is used as an electron donor, and also as an electrode. EMG unit is composed of two home-made copper coils and a neodymium magnet. All individual units are integrated into a two-piece acrylic shell. The whole device is of a compact, low-cost, and lightweight design. It has a size of 37\u00a0mm \u00d7 37\u00a0mm \u00d7 70\u00a0mm, which was optimized by modelling. Performance characterization verified the proposed hybrid nanogenerator as an efficient energy harvester. Output characteristics were tested under different loads (in a range from 10 k\u03a9 to 100 M\u03a9). The maximum output voltage and current of the hybrid nanogenerator were estimated to be about 65 V and 15.25 \u03bcA, respectively. The maximum output power was 1.13\u00a0mW at 200 \u03a9. Charging performance analysis showed that the hybrid nanogenerator significantly enhanced the voltage level and charging speed of the tested capacitors in comparison with individual units. The hybrid nanogenerator charged 1\u03bcF capacitor to 9.1 V within 60\u00a0s. Individual units could simultaneously power at least 144 light-emitting diodes (LEDs). A hybrid signal could power at least 94 LEDs connected in series and at least 50 LEDs connected in parallel. Electrical energy produced by the hybrid nanogenerator was stored in a 47 \u03bcF capacitor bank and used to efficiently power a calculator.", "keywords": ["Triboelectric nanogenerators", "Electromagnetic generators", "Hybrid nanogenerator", "Electrical engineering. Electronics. Nuclear engineering", "02 engineering and technology", "0210 nano-technology", "Mechanical energy harvesting", "01 natural sciences", "Modelling", "TK1-9971", "0104 chemical sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.egyr.2022.07.052"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Energy%20Reports", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.egyr.2022.07.052", "name": "item", "description": "10.1016/j.egyr.2022.07.052", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.egyr.2022.07.052"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-11-01T00:00:00Z"}}, {"id": "10.1016/j.egypro.2018.07.023", "type": "Feature", "geometry": null, "properties": {"updated": "2026-04-04T16:16:06Z", "type": "Journal Article", "created": "2018-07-18", "title": "Intercalation of aromatic sulfonates in \u2018green rust\u2019 via ion exchange", "description": "\u2018Green rust\u2019 intercalated with aromatic sulfonates can potentially be effective materials for the treatment of soil and groundwater polluted with chlorinated benzenes. We investigated the potential intercalation of benzene sulfonate (BzS) and 1,3-benzene disulfonate (BzDS) into green rust sulfate (GRSO4) via ion exchange. The GRSO4 reacted with various concentrations of sulfonates were characterized by X-ray diffraction, X-ray scattering and transmission electron microscopy. GR interacted with BzDS did not result in intercalation due to stearic hindrance and electrostatic repulsion. For BzS, mixtures of GRSO4 and GR-BzS (d001 = 14.3 \u00c5) were obtained at molar equivalents of ion exchange capacity >5. The intercalation of BzS in the GR structure is limited (~18% intercalation) since BzS cannot fully replace SO42-. The BzS molecules are likely arranged in the interlayer as a dehydrated monolayer with the \u2013SO3 groups facing away in alternate directions.", "keywords": ["layered double hydroxide", "Iron (oxyhydr)oxides", "Iron (oxyhydr)oxides", " layered double hydroxide", " sulfonates", "sulfonates", "iron (oxyhydr)oxides", "500 Naturwissenschaften und Mathematik::550 Geowissenschaften", " Geologie::551 Geologie", " Hydrologie", " Meteorologie", "02 engineering and technology", "551", "0210 nano-technology", "01 natural sciences", "6. Clean water", "0104 chemical sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.egypro.2018.07.023"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Energy%20Procedia", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.egypro.2018.07.023", "name": "item", "description": "10.1016/j.egypro.2018.07.023", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.egypro.2018.07.023"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-07-01T00:00:00Z"}}, {"id": "10.1016/j.electacta.2015.11.110", "type": "Feature", "geometry": null, "properties": {"license": "Closed Access", "updated": "2026-04-04T16:16:10Z", "type": "Journal Article", "created": "2015-12-12", "title": "Bismuth film electrode for anodic stripping voltammetric measurement of silver nanoparticle dissolution", "description": "Abstract A straightforward protocol for measuring low concentration levels of Ag(I) using bismuth film electrode (BiFE) in combination with anodic stripping voltammetry was developed and studied as a suitable alternative to current methods for detecting the dissolution of silver nanoparticles (Ag NPs). The BiFE was prepared in-situ on the surface of a supporting glassy carbon electrode. Several key operational parameters were examined and optimized, e.g. accumulation potential, accumulation time and concentration of Bi(III). The BiFE revealed good linear operation in the examined concentration range of 10\u201390\u00a0\u03bcg\u00a0L \u22121 Ag(I) with r 2 of 0.998, calculated limit of detection (3\u03c3) of 2.1\u00a0\u03bcg\u00a0L \u22121 obtained after 60\u00a0s accumulation, and favorable repeatability with RSD of 3.6% (50\u00a0\u03bcg\u00a0L \u22121 , n\u00a0=\u00a010). The method was successfully tested through measuring Ag(I) in the supernatant of a commercial Ag NP suspension and the performance was superior to the potentiometric measurement using silver ion-selective electrode.", "keywords": ["01 natural sciences", "3. Good health", "0104 chemical sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.electacta.2015.11.110"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Electrochimica%20Acta", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.electacta.2015.11.110", "name": "item", "description": "10.1016/j.electacta.2015.11.110", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.electacta.2015.11.110"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2016-01-01T00:00:00Z"}}], "links": [{"rel": "self", "type": "application/geo+json", "title": "This document as GeoJSON", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=0104+chemical+sciences&f=json", "hreflang": "en-US"}, {"rel": "alternate", "type": "text/html", "title": "This document as HTML", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=0104+chemical+sciences&f=html", "hreflang": "en-US"}, {"rel": "collection", "type": "application/json", "title": "Collection URL", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main", "hreflang": "en-US"}, {"type": "application/geo+json", "rel": "first", "title": "items (first)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=0104+chemical+sciences&", "hreflang": "en-US"}, {"rel": "next", "type": "application/geo+json", "title": "items (next)", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items?keywords=0104+chemical+sciences&offset=50", "hreflang": "en-US"}], "numberMatched": 226, "numberReturned": 50, "distributedFeatures": [], "timeStamp": "2026-04-04T22:44:22.479688Z"}