{"type": "FeatureCollection", "features": [{"id": "10.1016/j.epsl.2015.12.030", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-25T16:15:58Z", "type": "Journal Article", "created": "2016-01-05", "title": "Estimation of the extraterrestrial 3He and 20Ne fluxes on Earth from He and Ne systematics in marine sediments", "description": "Abstract Sediments contain interplanetary dust particles (IDPs) carrying extraterrestrial noble gases, such as 3 He, which have previously been used to estimate the IDP accretion flux over time and the duration of past environmental events. However, due to its high diffusivity, He can be lost by diffusion either due to frictional heating during entry in the atmosphere, or once it has been incorporated in the sediments. Therefore the absolute values of 3 He IDP fluxes cannot be known. Due to its lower diffusivity, Ne is less likely to be lost by diffusion than He and can potentially provide an absolute IDP flux value. Here, we studied the Ne and He isotopic composition of 21 sediments of different ages (3 to 38 Myr, 56 Myr and 183 Myr) in order to better constrain the retention of 3 He in such deposits. The samples are carbonates from 2 sites of the Integrated Ocean Drilling Program (IODP), which previously showed evidence of detectable extraterrestrial 3 He, and from the Sancerre core in the Paris basin. The 3 He/ 4 He, 20 Ne/ 22 Ne and 21 Ne/ 22 Ne ratios of decarbonated residues vary respectively from 0.09 \u00d7 10 \u2212 6 to 76.5 \u00d7 10 \u2212 6 , 9.54 \u00b1 0.08 to 11.30 \u00b1 0.60 and from 0.0295 \u00b1 0.0001 to 0.0344 \u00b1 0.0003 . These isotopic compositions can be explained by a mixing between two terrestrial components (atmosphere and radiogenic He and nucleogenic Ne present in the terrigenous fractions) and an extraterrestrial component. The linear relationship between 20 Ne/ 22 Ne and 3 He/ 22 Ne ratios shows that the extraterrestrial component has a unique composition and is similar to the He and Ne composition of implanted solar wind. This composition is different from the individual stratospheric IDPs for which the Ne and He isotopic compositions have been measured. We suggest that this difference is due to a bias in the sampling of the individual IDPs previously analyzed toward the largest ones that are more likely to lose He during entry in the atmosphere. Our data further constrains the size of the majority of the IDPs to be less than 10 \u03bc m in diameter. In addition, the constant 3 He/ 22 Ne ratio of the extraterrestrial component present in the samples, which is similar to the implanted solar wind composition, suggests that no diffusive loss of 3 He occurred in the atmosphere or on the seafloor. Thus, neglecting any non-fractionating He and Ne loss by weathering and/or alteration of the host phases on the seafloor, the extraterrestrial 3 He and 20 Ne fluxes between 3 to 38 Myr ago are respectively 0.2 \u00b1 0.1 \u00d7 10 \u2212 12 cm 3 cm \u2212 2 kyr \u2212 1 and 0.2 \u00b1 0.1 \u00d7 10 \u2212 11 cm 3 cm \u2212 2 kyr \u2212 1 . During the sharp increases of the late Eocene and late Miocene, the IDP 3 He and 20 Ne fluxes reach values up to five times higher.", "keywords": ["[SDU] Sciences of the Universe [physics]", "13. Climate action", "sediments", "IDP", "helium", "neon", "14. Life underwater", "extraterrestrial flux", "implanted solar wind", "01 natural sciences", "0105 earth and related environmental sciences"]}, "links": [{"href": "https://doi.org/10.1016/j.epsl.2015.12.030"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Earth%20and%20Planetary%20Science%20Letters", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.epsl.2015.12.030", "name": "item", "description": "10.1016/j.epsl.2015.12.030", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.epsl.2015.12.030"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2016-02-01T00:00:00Z"}}, {"id": "10.1016/j.biombioe.2018.10.004", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-25T16:15:35Z", "type": "Journal Article", "created": "2018-10-11", "title": "How and why does willow biochar increase a clay soil water retention capacity?", "description": "Abstract Addition of biochar into a soil changes its water retention properties by modifying soil textural and structural properties. In addition, internal micrometer-scale porosity that is able to directly store readily plant available water affects soil water retention properties. This study shows how precise knowledge of the internal micrometer-scale pore size distribution of biochar can deepen the understanding of the biochar-water interactions in soils. The micrometer-scale porosity of willow biochar was quantitatively and qualitatively characterized using X-ray tomography, 3D image analysis and Helium ion microscopy. The effect of biochar application on clay soil water retention was studied by conventional water retention curve approach. The results indicate that the internal pores of biochar, with sizes of at 50 and 10\u202f\u03bcm (equivalent pore diameter), increased soil porosity and the amount of readily plant available water. After biochar addition, changes in soil porosity were detected at pore size regimes 5\u201310 and 25\u202f\u03bcm, i.e. biochar pore sizes multiplied by factor 0.5. The detected pore size distribution of biochar does not predict directly (1:1 compatibility) the changes observed in the soil moisture characteristics. It is likely that biochar chemistry and pore morphology affect biochar-water interactions via e.g. surface roughness and contact angle. In addition, biochar induced changes in soil structure and texture affected soil moisture characteristics. However, the approach presented is an attractive pathway to more generalized understanding on how and why biochar internal porosity affects soil moisture characteristics.", "keywords": ["570", "Fysiikka", "ta1171", "mikroskopia", "savi", "01 natural sciences", "630", "huokoisuus", "soil water retention", "tomografia", "219", "3D image analysis", "biochar", "3D-mallinnus", "ta216", "ta218", "219 Environmental biotechnology", "0105 earth and related environmental sciences", "x-ray tomography", "biohiili", "maaper\u00e4", "ta114", "Physics", "ta1182", "04 agricultural and veterinary sciences", "15. Life on land", "6. Clean water", "mikrorakenteet", "plant available water", "helium ion microscopy", "0401 agriculture", " forestry", " and fisheries", "vesipitoisuus", "X-ray tomography"]}, "links": [{"href": "https://doi.org/10.1016/j.biombioe.2018.10.004"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/Biomass%20and%20Bioenergy", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.1016/j.biombioe.2018.10.004", "name": "item", "description": "10.1016/j.biombioe.2018.10.004", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.1016/j.biombioe.2018.10.004"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2018-12-01T00:00:00Z"}}, {"id": "10.5281/zenodo.7142483", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-25T16:23:29Z", "type": "Journal Article", "title": "Co-culture of human type I and type II pneumocyte cell lines as a model of alveolar epithelium", "description": "The epithelial tissues of the distal lung are continuously exposed to inhaled air, and are thus of research interest in
studying respiratory exposure to both therapeutic and hazardous materials. There is a need therefore to develop
sophisticated models of the human alveolar epithelium, which better represent the different cell types present in the
native lung and interactions between them. Our aim was to develop an air-liquid interface (ALI) model of the alveolar epithelium by incorporating human cell lines which bear features of type I (hAELVi) and type II (NCI-H441) epithelial cells.
Brookes et al (2021) PLoS ONE 16(9):e0248798. https://doi.org/10.1371/journal.pone.0248798
", "keywords": ["respiratory exposure", "microplastics", "epithelial tissues", "alveolar epithelium", "air-liquid interface", "human cell lines", "human health", "3. Good health", "nanoplastics"], "contacts": [{"organization": "Boland, Sonja, Brookes, Oliver, Kuen, Rene Lai, Miremont, Dorian, Eon-Bertho, Mawas, Safaa, Baeza-Squiban, Amelle,", "roles": ["creator"]}]}, "links": [{"href": "https://doi.org/10.5281/zenodo.7142483"}, {"rel": "related", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/STCM%202022", "name": "related record", "description": "related record", "type": "application/json"}, {"rel": "self", "type": "application/geo+json", "title": "10.5281/zenodo.7142483", "name": "item", "description": "10.5281/zenodo.7142483", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main/items/10.5281/zenodo.7142483"}, {"rel": "collection", "type": "application/json", "title": "Collection", "name": "collection", "description": "Collection", "href": "https://repository.soilwise-he.eu/cat/collections/metadata:main"}], "time": {"date": "2022-01-01T00:00:00Z"}}, {"id": "PMC2677447", "type": "Feature", "geometry": null, "properties": {"updated": "2026-05-25T16:28:02Z", "type": "Journal Article", "created": "2008-04-14", "title": "\u03b2\u2010catenin signalling in mesenchymal islet\u2010derived precursor cells", "description": "

Abstract.\uffe2\uff80\uff82 Objectives: Previously, we characterized human islet\uffe2\uff80\uff90derived precursor cells (hIPCs) as mesenchymal stem cells that migrate out from islets in vitro and can differentiate into functional islet\uffe2\uff80\uff90like structures following proliferative expansion. Here, we investigate the role of \uffce\uffb2\uffe2\uff80\uff90catenin signalling in derivation and proliferation of hIPCs. Materials and methods: Localization of \uffce\uffb2\uffe2\uff80\uff90catenin was performed using confocal microscopy. Expression levels of \uffce\uffb2\uffe2\uff80\uff90catenin target genes were measured by quantitative real\uffe2\uff80\uff90time polymerase chain reaction. Loss\uffe2\uff80\uff90of\uffe2\uff80\uff90function studies were performed using specific short interfering RNAs. Results: Immunostaining of islet outgrowths revealed translocation of \uffce\uffb2\uffe2\uff80\uff90catenin from plasma membranes in intact islets to the nucleus in cells migrating out. There were no nuclear \uffce\uffb2\uffe2\uff80\uff90catenin\uffe2\uff80\uff90positive cells in intact islets whereas between 35% and 70% of cells in established hIPC cultures exhibited nuclear \uffce\uffb2\uffe2\uff80\uff90catenin. Transcripts for \uffce\uffb2\uffe2\uff80\uff90catenin target genes were increased in hIPCs compared to those in islets. \uffce\uffb2\uffe2\uff80\uff90Catenin translocated to the cell membrane when hIPCs formed epithelial cell clusters. In proliferating hIPCs, there was a strong correlation between markers of proliferation and nuclear \uffce\uffb2\uffe2\uff80\uff90catenin. Treatment of hIPCs with the glycogen synthase kinase\uffe2\uff80\uff903\uffce\uffb2 inhibitor (2\uffe2\uff80\uffb2Z,3\uffe2\uff80\uffb2E)\uffe2\uff80\uff906\uffe2\uff80\uff90Bromoindirubin\uffe2\uff80\uff903\uffe2\uff80\uffb2\uffe2\uff80\uff90oxime increased intracellular \uffce\uffb2\uffe2\uff80\uff90catenin but reduced nuclear \uffce\uffb2\uffe2\uff80\uff90catenin, and was associated with reduced cell proliferation. Finally, knockdown of \uffce\uffb2\uffe2\uff80\uff90catenin decreased \uffce\uffb2\uffe2\uff80\uff90catenin target gene expression and hIPC proliferation. Conclusions: These results support a functional role for \uffce\uffb2\uffe2\uff80\uff90catenin during proliferation of hIPCs and suggest that activated \uffce\uffb2\uffe2\uff80\uff90catenin signalling may also be important during hIPC derivation from islets.