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589 results for “natural materials”
Data from: Inheritance of material wealth in a natural population
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Supplementary material for Petricca et al. (2024), "Partial Differentiation of Europa and Implications for the Origin of Materials in the Jupiter System", Nature Astronomy
<p>This dataset contains the supplementary material data files associated with the <em>Nature Astronomy </em>article "Partial Differentiation of Europa and Implications for the Origin of Materials in the Jupiter System". Each folder contains the interior models associated to every case presented in the paper. The interior properties are listed in text files and can be used to reproduce most of the figures in the main text and supplementary information. The hot and cold labels refer to the different reference temperature profiles.</p>
Fig. 2. Ephemera glaucops F.-J. Pictet, 1843 in Mayfly types and additional material (Insecta: Ephemeroptera) examined by F.-J. Pictet and A.-E. Pictet, housed in the Museums of Natural History of Geneva and Vienna
Fig. 2. Ephemera glaucops F.-J. Pictet, 1843, labels of one male imago syntype.
Fig. 8 in Mayfly types and additional material (Insecta: Ephemeroptera) examined by F.-J. Pictet and A.-E. Pictet, housed in the Museums of Natural History of Geneva and Vienna
Fig. 8. Teloganopsis hispanica (Eaton, 1888). Male imago holotype. Scale bar: 1 mm.
Fig. 10 in Mayfly types and additional material (Insecta: Ephemeroptera) examined by F.-J. Pictet and A.-E. Pictet, housed in the Museums of Natural History of Geneva and Vienna
Fig. 10. Rhithrogena cincta Navás, 1921. Male imago in lateral view. Scale bar: 1 mm.
Assessment of Natural Radioactivity Levels and Estimation of Radiological Hazards in Building Materials Commonly Used in Ethiopian Constructions.
<p>Natural radionuclide activity concentrations were measured in ceramic, gypsum, and brick samples from manufacturers, dealers, and construction sites in and around Addis Ababa, Ethiopia, using an HPGe detector. The study's main objectives were to assess the building material activity and health impacts. Average activity concentrations (Bq.kg<sup>-1</sup>) for <sup>226</sup>Ra in ceramic, gypsum, and brick samples were obtained as 81.19 ± 1.88, 1.34 ± 0.17, and 39.83 ± 1.21, respectively. Respective values of <sup>232</sup>Th were obtained as 166.12 ± 4.20, 0.68 ± 0.18, and 103.71 ± 3.29 and concentrations of <sup>40</sup>K were found to be 755.06 ± 16.10,15.42 ± 1.97, and 921.22 ± 24.90, respectively. Some of the materials that were tested, especially the ceramic sample, had slightly higher concentrations of radionuclides. In all samples except ceramic, Ra<sub>eq </sub>was < 370 Bq.kg<sup>-1</sup>, which is the recommended limiting dose for bulk medium. Furthermore, the corresponding radiological parameters, absorbed dose, annual effective dose equivalent, excess lifetime cancer risk (ELCR), internal (H<sub>in</sub>) and external (H<sub>ex</sub>) hazard indexes, gamma index (Iγ), and alpha index (Iα) were determined. The ELCR average values in this study are slightly higher than the global average, and the indoor and outdoor absorbed dose rates are greater than the limiting criteria of 84 and 59 nGyh<sup>-1</sup>. Therefore, especially for ceramic samples, it is important to assess their radiation potential and should be utilized in a controlled manner to decrease gamma exposure to inhabitants. Finally, the computed data could be used as a baseline to look at any radiological contamination caused by construction materials in the future.</p>
Transcriptional networks underlying a primary ovarian insufficiency disorder in alligators naturally exposed to EDCs: Transformed read counts and supplementary materials
<p>Interactions between the endocrine system and environmental contaminants are responsible for impairing reproductive development and function. Despite the taxonomic diversity of affected species and attendant complexity inherent to natural systems, the underlying signaling pathways and cellular consequences are mostly studied in lab models. To resolve the genetic and endocrine pathways that mediate affected ovarian function in organisms exposed to endocrine disrupting contaminants in their natural environments, we assessed broad-scale transcriptional and steroidogenic responses to exogenous gonadotropin stimulation in juvenile alligators (<em>Alligator missippiensis</em>) originating from a lake with well-documented pollution (Lake Apopka, FL) and a nearby reference site (Lake Woodruff, FL). We found that individuals from Lake Apopka are charachterized by hyperandrogenism and display hyper-sensitive transcriptional responses to gonadotropin stimulation when compared to individuals from Lake Woodruff. Site-specific transcriptomic divergence appears to be driven by wholly distinct subsets of transcriptional regulators, indicating alterations to fundamental genetic pathways governing ovarian function. Consistent with broad-scale transcriptional differences, ovaries of Lake Apopka alligators displayed impediments to folliculogenesis, with larger germinal beds and decreased numbers of late-stage follicles. After resolving the ovarian transcriptome into clusters of co-expressed genes, most site-associated modules were correlated to ovarian follicule phenotypes across individuals. However, expression of two site-specific clusters were independent of ovarian cellular architecture and are hypothesized to represent alterations to cell-autonomous transcriptional programs. Collectively, our findings provide high resolution mapping of transcriptional patterns to specific reproductive function and advance our mechanistic understanding regarding impaired reproductive health in an established model of environmental endocrine disruption.</p>
Supplementary material 1 from: Virkkala R, Rajasärkkä A (2012) Preserving species populations in the boreal zone in a changing climate: contrasting trends of bird species groups in a protected area network. Nature Conservation 3: 1-20. https://doi.org/10.3897/natureconservation.3.3635
Mean densities and number of observations of species in 1981–1999 and in 2000–2009
Supplementary Material for Requirements documentation containing natural language: A Systematic Tertiary Literature Review
<p>Context: Requirements documentation in natural language has diverse artifacts, but few studies address their suitability to types<br>of requirements or ease of communication.</p> <p>Methods: We conducted a systematic tertiary literature review (STLR) and identified 22 relevant review papers that address natural language artifacts used by practitioners to document software requirements. We also investigated which types of requirements are addressed by artifacts and if there are guidelines for each.</p> <p>Results: A variety of artifacts used for this purpose were identified, of which the most referenced in the literature were diagrams,<br>use cases, conceptual models, user stories, and prototypes. The analysis highlighted that artifacts are applied differently to functional and non-functional requirements. In general, diagrams, use cases, scenarios, and prototypes can be used for both types of requirements, depending on the content (usability, security, etc.). However, user stories and derived artifacts are more recommended for functional requirements and have limitations for non-functional requirements.</p> <p>Conclusion: Furthermore, the study explored different guidelines, structures, and formats used in documentation artifacts, reflecting the diversity in requirements documentation practices in software projects.</p>
Sound Absorption Coefficients of Natural Materials Database
<p>This database is a working compilation of the sound absorption coefficients (α) of various natural materials for the octave band frequencies (125, 250...4000 Hz), when data is available. Additional physical properties of these materials, including thickness, density, airflow resistivity, and noise reduction coefficient (NRC) are included when available. Examples of materials in the database include kenaf, fibers, wood, food waste products (corn husk, fruit stone wastes, etc.), and animal byproducts (chicken feathers, sheep wool, etc.). Additionally, reference links are also included for each material, for easy reference to the original work/data.</p> <p>The data was gathered from published results in peer-reviewed scientific journals, whether through the papers' graphs/figures, which were then analyzed using the PlotDigitizer tool, or the papers' data tables. The aim of this database is to provide a central location of acoustical data for sustainable materials, in the hopes that researchers, scientists, teachers, students, or interested members of the public can easily access and utilize this data, whether for acoustical, environmental, sustainability, engineering, physics, mathematical, computational, or personal purposes. </p>
Supplementary Materials S1-S4 to Leipe et al., 2024. Human activities, early farming and natural environment in the north-western Kanto Plain (Central Japan) during the Final Jomon–Early Kofun period (990 cal BCE–330 cal CE) inferred from palynological and archaeobotanical records
<p>This dataset represents the Supplementary Materials S1-S4 to Leipe et al. (2024), <em>QEH</em> 2, 100030.</p> <p>Leipe et al., 2024. Human activities, early farming and natural environment in the north-western Kanto Plain (Central Japan) during the Final Jomon–Early Kofun period (990 cal BCE–330 cal CE) inferred from palynological and archaeobotanical records. <em>Quaternary Environments and Humans</em> 2, 100030 (doi: <a href="https://doi.org/10.1016/j.qeh.2024.100030">https://doi.org/10.1016/j.qeh.2024.100030</a>).</p> <p><strong>Supplementary Material S1</strong>: Pollen and non-pollen palynomorph records of a section (490.5-668.5 cm depth) of the MJ20 sediment core from Morinji Marsh, Tatebayashi City, Gunma Prefecture, Kanto region, Central Japan.</p> <p><strong>Supplementary Material S2</strong>. Sample-specific total counts of macrobotanical (seeds and fruits) and fungal remains and floated litres of sediment samples from ash pits (Yayoi period) and hearths (Kofun period) of the Ikegami archaeological site, Kumagaya City, Saitama Prefecture, Kanto region, Central Japan.</p> <p><strong>Supplementary Material S3</strong>. Photographs of charred remains of<em> Juglans ailantifolia</em> and <em>Aesculus turbinata</em> from the Middle Yayoi period ash pit samples at the Ikegami archaeological site, Kumagaya City, Saitama Prefecture, Kanto region, Central Japan.</p> <p><strong>Supplementary Material S4</strong>. Description of the As-B tephra in the MJ20 sediment core from Morinji Marsh, Tatebayashi City, Gunma Prefecture, Kanto region, Central Japan.</p>
Figure 1 in The species of Papilionidae and Pieridae (Lepidoptera) described by Cramer and Stoll and their putative type material in the Natural History Museum in London
Figure 1. De Uitlandsche Kapellen (title page).
Figure 2 in The species of Papilionidae and Pieridae (Lepidoptera) described by Cramer and Stoll and their putative type material in the Natural History Museum in London
Figure 2. De Uitlandsche Kapellen (dedication to Cornelis van Lennep).
PUDL Raw Pipelines and Hazardous Materials Safety Administration (PHMSA) Annual Natural Gas Report
<p>Annual reports submitted to PHMSA from gas distribution, gas gathering, gas transmission, liquefied natural gas, and underground gas storage system operators. Annual reports include information such as total pipeline mileage, facilities, commodities transported, miles by material, and installation dates. Archived from <a href="https://www.phmsa.dot.gov/data-and-statistics/pipeline/gas-distribution-gas-gathering-gas-transmission-hazardous-liquids">https://www.phmsa.dot.gov/data-and-statistics/pipeline/gas-distribution-gas-gathering-gas-transmission-hazardous-liquids</a></p> <p>This archive contains raw input data for the Public Utility Data Liberation (PUDL) software developed by <a href="https://catalyst.coop">Catalyst Cooperative</a>. It is organized into <a href="https://specs.frictionlessdata.io/data-package/">Frictionless Data Packages</a>. For additional information about this data and PUDL, see the following resources:</p> <ul> <li><a href="https://github.com/catalyst-cooperative/pudl">The PUDL Repository on GitHub</a></li> <li><a href="https://catalystcoop-pudl.readthedocs.io">PUDL Documentation</a></li> <li><a href="https://zenodo.org/communities/catalyst-cooperative/">Other Catalyst Cooperative data archives</a></li> </ul> <p> </p>
Dataset from Nature Materials paper: Amorphous nickel hydroxide shell tailors local chemical environment on platinum surface for alkaline hydrogen evolution reaction
<p>Dataset of the paper "Amorphous nickel hydroxide shell tailors local chemical environment on platinum surface for alkaline hydrogen evolution reaction" accepted in Nature Materials.</p> <p>- GCGA_inputs.zip: A zip file containing all needed input files to run a grand canonical genetic algorithm (GCGA) global optimization structure search. Note that the script would need modifications to be compatible with later version of the GOCIA package, please following the most updated instructions at https://github.com/zishengz/gocia</p> <p>- GCGA_Ni12OxHy_all_samples.db: An ASE database file containing all unique structures from the GCGA search of Ni12OxHy on a Pt(111) surface. </p> <p>- GM_Ni12O25H13.vasp: The structure of the global minimum structure from GCGA search, which is also the surface structure we focused on in this study, in VASP structure format.</p> <p>- rxn_structures.zip: A zip file containing the structures of reaction intermediates investigated in this work, in VASP structure format</p> <p> </p>
Propiedades elásticas de GUALAM, material natural y sostenible para la producción de accesorios y acabados
<p>La continua necesidad que tiene la sociedad para la sustituir materiales sintetizados a partir derivados del petróleo en las diferentes aplicaciones tecnológicas o ambientales, ha venido motivando continuamente la investigación en materiales y estructuras con nuevas alternativas que disminuyan la utilización de dichos materiales. Referente a esto, desarrollamos una opción para la implementación en estructuras y acabados de un material laminado a partir de la guadua Angustifolia Kunth denominado GUALAM, en el cual se utiliza un aglutinante natural, resaltando el uso de solamente insumos naturales para su producción. GUALAM está compuesto por láminas delgadas que varían en tamaño desde 30 cm por 30 cm hasta 122 cm por 244 cm, con un espesor de entre 3 mm y 4 mm. En el presente estudio, se evalúan las propiedades físicas de estos laminados, a través de medidas de esfuerzo por tensión en función de la deformación en probetas de láminas de guadua de espesores de 3 mm. Así mismo, se presentan los resultados de pruebas de compresión para vigas hechas en guadua donde se comparan los resultados con los obtenidos con otros tipos de maderas tales como pino, madera sajo y madera uparán, entre otros. Estos resultados motivan la implementación de GUALAM en diversas aplicaciones y objetos, tales como papeleras, carcasas de celulares, lámparas y demás que contengan materia prima derivada del petróleo.</p>
Transcriptional networks underlying a primary ovarian insufficiency disorder in alligators naturally exposed to EDCs: Transformed read counts and supplementary materials
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uFTIR test spectra for known synthetic and natural materials
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Supplementary material 1 from: Huang J, Guo Z, Tang S, Ren W, Chu G, Wang L, Zhao L, Yu R, Xu Y, Ding Y, Zang R (2020) Floristic composition and plant diversity in distribution areas of native species congeneric with Betula halophila in Xinjiang, northwest China. Nature Conservation 42: 1-17. https://doi.org/10.3897/natureconservation.42.54735
Figure S1. The correlation between environmental variables in distribution areas of five congeneric species with Betula halophila
Supplementary material 11 from: Tomaskinova J, Dicks L, Collier M, Geneletti D, Grace M, Longato D, Sadula R, Stoev P, Sapundzhieva A, Balzan MV (2020) Capacity-building and networking events for nature-based solutions and re-naturing in Malta. Research Ideas and Outcomes 6: e60893. https://doi.org/10.3897/rio.6.e60893
Identifying priority knowledge needs for implementing nature-based solutions-results from Malta and other Mediterranean islands
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.