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12,393 results for “materiality”
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>
GEOS-Chem 2015 Speciated PM2.5 Outputs for "Impact of circular- and single-sector waste-heat reuse pathways on PM2.5-air quality, CO2 emissions, and human health in India; material exchanges more viable to achieve sustainability targets"
<p>Daily PM2.5 and species outputs from GEOS-Chem Modeling over India (0.5° x 0.625°) </p>
How is Transient Behavior Addressed in Practice? Insights from a Series of Expert Interviews - Supplementary Material
<p>This is the supplementary material of the following publication:</p> <p>Samuel Beck, Sebastian Frank, Alireza Hakamian, André van Hoorn. 2022. How is Transient Behavior Addressed in Practice? Insights from a Series of Expert Interviews. In <em>Companion of the 2022 ACM/SPEC International Conference on Performance Engineering (ICPE ’22 Companion)</em>, April 9–13, 2022, Bejing, China. ACM, New York, NY, USA, 9 pages. https://doi.org/10.1145/3491204.3527483.</p> <p>The supplementary material contains the questions that were asked during the interviews and the five transcripts that were produced as a result of the interviews. The interviews were conducted in German and the transcripts have not been translated into English.</p>
Evaluation of Alternative Sources of Supplementary Cementitious Materials (SCMs) for Concrete Materials in Transportation Infrastructure
<p>Fly ash is the most utilized supplementary cementitious material (SCM) in the US. Nonetheless, rapid decline in coal-fired power generation threatens its supply. The objective of this study was to evaluate alternative SCMs for concrete transportation infrastructure in Region 6. SCMs investigated included reclaimed fly ash (RFA), reclaimed ground bottom ash (GBA), metakaolin (MK), and conventional Class F fly ash (FA) as a reference. SCMs were characterized and the fresh and hardened properties of concrete incorporating different dosages (i.e., 10, 20, and 30% cement replacement by mass) of the individual SCMs (i.e., binary systems) and blended SCM systems of RFA-MK and GBA-MK (i.e., ternary systems) were assessed. All the coal ashes met the requirements for pozzolanic component, CaO, SO3, moisture content, LOI, SAI, and water requirement to be classified as Class F pozzolan according to ASTM C618. MK met all the but the water requirement. Concrete using FA generally exhibited better workability than the control mixture (i.e., without SCMs), whereas concrete incorporating RFA, GBA, and MK presented decrements in workability. Mixtures implementing ternary systems also displayed decrements in workability. Air content of fresh concrete mixtures incorporating binary and ternary systems generally decreased. Relative to the control mixture, decrements in 28-day compressive strength (f’c) were reported when incorporating FA and RFA, yet this was generally not the case for the 90-day f’c. In the case of GBA mixtures, significant differences in f’c were not observed after 28 days nor 90 days. MK mixtures as well as RFA-MK and GBA-MK mixtures generally presented increments in 28-day and 90-day f’c. Concrete mixtures implementing coal ashes did not produce significant differences in 28-day surface resistivity (SR) at any cement replacement levels; yet after 90 days of curing, significant improvements in SR were reported. MK, RFA-MK, and GBA-MK mixtures exhibited significant increments in SR at all dosages after 28 and 90 days of curing. Notably, while the control mixture and mixtures incorporating coal ashes did not meet the 28-day SR requirement for class A1 concrete according to LaDOTD, mixtures implementing MK and ternary systems did in almost all cases. All SCMs were effective at reducing drying shrinkage. Binary systems reduced drying shrinkage by 24.2-69.1%, whereas ternary systems reduced drying shrinkage by 55.2-75.3%. With regards ASR, mixtures implementing SCMs presented significantly lower expansion and the increment in SCMs content further reduced the expansion; thus, signaling a positive effect in suppressing ASR related expansion, specially at high dosages.</p>
Development of Cost-Effective High-Modulus Asphalt 5. Report Date Aug. 2021 Concrete (HMAC) Mixtures Using Crumb Rubber and Local Construction Materials in Louisiana
<p>One of the emerging solutions to enhance the durability of asphalt pavements is the use of a French asphalt mix<br> known as “High-Modulus Asphalt Concrete (HMAC).” This mix uses a hard asphalt binder, high binder content<br> (about 6%), and low air voids content as compared to Superpave mixtures. The key objective of this study was<br> to develop a cost-effective HMAC mixture using crumb rubber and local materials in Louisiana. To achieve this<br> objective, four HMAC mixtures were prepared using two asphalt binders (PG 82-22 and PG 76-22 plus 10%<br> crumb rubber) and two Reclaimed Asphalt Pavement (RAP) contents (20% and 40%); additionally, a<br> conventional Superpave mixture in Louisiana was prepared as a control mixture. The laboratory performance<br> of these five mixtures was evaluated in terms of workability, dynamic modulus, rutting resistance, and cracking<br> resistance. The AASHTOWare Pavement ME Design software was also used to estimate the long-term field<br> performance of these mixtures. Results indicated that the HMAC mixture prepared with 10% crumb rubber and<br> 20% RAP successfully met the French mix design specifications for HMAC and LaDOTD specifications. This<br> HMAC mix outperformed the control Superpave mix in terms of dynamic modulus, rutting resistance, and<br> cracking resistance. Additionally, this HMAC mixture can reduce the required asphalt thickness by 1.5 or 2<br> inches based on traffic level. The cost-effectiveness analysis indicated that this HMAC mixture was more costeffective<br> than conventional Superpave mixtures in Louisiana. In addition, this mixture is environmentallyfriendly<br> since it can reduce the disposal of scrap tires in landfills.</p>
Supplementary Material for Mapping Active Site Geometry to Activity in Immobilized Frustrated Lewis Pair Catalysts
<p>Supplementary Material for "Mapping Active Site Geometry to Activity in Immobilized Frustrated Lewis Pair Catalysts".</p>
Durability of Concrete Produced with Alternative Supplementary Cementitious Material
<p>Historically, Class F fly ash has been chosen as a supplementary cementitious material (SCM) in concrete for its ability to mitigate alkali-silica reaction (ASR). However, future availability of fly ash is uncertain because the energy industry has been investing in renewable energy production and removing coal burning generating stations from operation. Consequently, there is a growing need to find new, cost effective and environmentally friendly alternatives to fly ash. This study investigated a locally available natural pozzolan mined from a pumicite deposit near Espanola, NM for its ability to mediate ASR. Concrete and mortar mixtures included SCM contents ranging from 10 to 40%. Mortar bar tests and concrete tests for compressive and flexural strengths, shrinkage, frost resistance, chloride permeability, and surface resistivity were performed to assess the effectiveness of the pumicite. A minimum pumicite content of 20% was needed to mitigate ASR and that mortar mixtures containing 30% natural pozzolan had approximately 40% less expansion than mixtures containing 30% fly ash, indicating that the pumicite was substantially more effective at mitigating ASR than fly ash. Concrete mixtures containing natural pozzolan had comparable compressive strengths to specimens containing fly ash, while flexural strengths of specimens containing pumicite exceeded those of mixtures containing only fly ash. Concrete shrinkage decreased as pumicite content increased and when fly ash was used in place of pumicite. Fly ash mixtures produced at least 20% less shrinkage than similar 30% pumicite mixtures, indicating that the pumicite produced significantly greater shrinkage than the fly ash. Results also showed that mixtures containing 20 and 30% pumicite had the lowest acceptable durability factor (DF) values, and these DF values were significantly less than the DFs obtained using 30% fly ash. Rapid chloride permeability testing results showed that increasing pumicite content decreased chloride ion penetration. The 28-day surface resistivity results showed that the mixtures most susceptible to chloride ion penetration were the mixtures that contained either 10% natural pozzolan or 30% fly ash. Mixtures containing 30% fly ash provided substantially less chloride ion penetration resistance than mixtures containing 30% natural pozzolan at 28 days, but slightly better chloride resistance at 180 days. These results indicate that pumicite can reliably replace (partially or completely) fly ash for all of the durability issues addressed in this work.</p>
Dandelion pappus morphing is actuated by radially patterned material swelling
<p>The dandelion pappus opens and closes reversibly to tune seed dispersal according to environmental moisture levels.</p> <p>In the Nature Communications paper "<em>Madeleine Seale, Annamaria Kiss, Simone Bovio, Ignazio Maria Viola, Enrico Mastropaolo, Arezki Boudaoud, Naomi Nakayama</em>, <strong>Dandelion pappus morphing is actuated by radially patterned material swelling</strong>, https://doi.org/10.1038/s41467-022-30245-3 the authors combined experiments with a computational model to show that pappus closure is coordinated by radially-patterned tissue swelling at the base of floral organs.</p> <p>This repository contains the source data for the paper.</p>
Database with characterization factors for material flow accounting (material footprint) for process-based LCA for ecoinvent 3.7.1 and 3.8 in openLCA
<p>This dataset contains extend material-specific material footprint indicators (raw material input RMI and total material requirement TMR) compiled by Mostert and Bringezu (2019) to process-based LCA in form of the databases ecoinvent 3.7.1 and 3.8 (Wernet et al. 2016) with the openLCA software. The scope of the material flows covered here largely fits to the materials list used for the Mineral Resource Scarcity indicator of the ReCiPe life cycle impact assessment (LCIA) method (Huijbregts et al. 2016).</p>
Supplementary material for "Language and User Requirements for Business Process Simulation - A Systematic Literature Review"
<p>This is ment as a supplementary material for the Publication "Language and User Requirements for Business Process Simulation - A Systematic Literature Review". It contains all sources that were used for the creation of the requirements broken down for each one.</p>
Supplementary material for paper "Contribution of the wind and Loop Current Eddies to the circulation in the southern Gulf of Mexico" submitted to journal of Ocean Dynamics
<p>Movie including the time evolution of the daily SSH and surface velocity vector fields in the BoC, the meridional velocity in the CG zonal section, meridional velocity in the 22°N zonal section, the vq sections at 22°N, the time series of PVF2 and CPFV2 and the time series of daily transport through the CG western arm.</p>
Supplementary Materials from the article Characterization and molecular evolution analysis of Periploca forrestii inferred from its complete chloroplast genome sequence
<p>Table S1. Base composition of chloroplast genome in <em>P. forrestii</em>, Table S2. The lengths of introns and exons for the splitting genes, Table S3. The GC content of the codons from <em>P. forrestii </em>chloroplast genome, Table S4. Preferred codons in chloroplast genome of <em>P. forrestii</em>, Table S5. Long repeat sequences in the <em>P. forrestii </em>chloroplast genome, Figure S1. Codon bias analysis of P. forrestii chloroplast genome. (A) Neutrality plot analysis; (B) Analysis of PR2 bias plot; (C) Analysis on ENC and GC3 relationship.</p>
PDF and PSD files of DiapixGEtv picture materials – German version adapted to elicit tense vowels
<p>This zipped folder contains PDF and PSD files of our translation of the DiapixUK picture materials by Baker & Hazan (2011) - adapted to elicit tense vowels in German (DiapixGEtv).</p> <p>For our purpose we only modified the written information when making adjustments to the original DiapixUK versions of the files. Our aim was to include as many tense vowels [i:, e:, a:, o:, u:] as possible while remaining subtle enough so as not to alert the participants to our research focus . The additional documentation contains information on the translation process and an overview over the adapted text parts containing target vowels in stressed syllables including the target word with its target vowel and pronunciation as well as its meaning in English.</p> <p>In order to facilitate further adaptation/modification each item in the PSD files is in a separate layer.</p> <p>Funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) – SFB 1412, 416591334</p>
Synthetic Göttingen Sentence Test material created with a text-to-speech system
<p>The speech material of the German Göttingen Sentence Test [1] was synthesized using a commercial text-to-speech system (Acapela Cloud Service). More details will be found in [2].</p> <p>Files:</p> <p>goesa_synth_female.zip<br> contains all 200 sentences with a synthetic female voice and the corresponding speech adjusted noise, which was generated by superimposing the speech material 30 times according to [3].</p> <p>goesa_synth_male.zip<br> contains all 200 sentences with a synthetic male voice and the corresponding speech adjusted noise, which was generated by superimposing the speech material 30 times according to [3].</p> <p> </p>
Training course materials: Introduction to Remote Sensing of Water Quality in Lakes
<p>Dataset including ESA Sentinel-2 MSI and Sentinel-3 OLCI L1B scenes (L1B), atmospherically corrected reflectance products (C2RCC), image subsets, and intermediate water quality products from the Copernicus Land Service and ESA Lakes_cci processing chain <em>Calimnos. </em>Data are in support of a recorded course introducing the theoretical and practical basis for water quality observation of lakes through remote sensing. See https://monocle-h2020.eu/Resources/Training</p> <p>The data package contains the following:</p> <p><strong>input_data.zip </strong>- unprocessed (L1B / L1C) satellite scenes of MSI and OLCI instruments over the Razelm/Sinoe lagoon and Black Sea</p> <p><strong>Output_S3_OLCI.zip - </strong>all outputs derived from the Sentinel-3 OLCI scene, including C2RCC and <em>Calimnos </em>(including POLYMER atmospheric correction and biogeochemical estimates as in the Lakes_cci)</p> <p><strong>Output_S2_MSI_Full_Scene_C2RCC.zip</strong> - atmospherically corrected (C2RCC algorithm) full Sentinel-2 MSI scene</p> <p><strong>Output_S2_MSI_Subset_C2RCC.zip </strong>- subset of Sentinel-2 MSI scene and atmospherically corrected results (C2RCC algorithm) </p> <p><strong>Output_S2_MSI_Calimnos_PML.zip </strong>- subset of Sentinel-2 MSI scene atmospherically corrected using POLYMER and biogeochemical estimates, using <em>Calimnos </em>as in the Copernicus Land Service. </p>
Nighttime Atmospheric Scattering Phase Function Derived from the Scattered Light of a Laser Beam - supplementary material
<p>The ZIP-package contains:</p> <ul> <li>Canon RAW (CR2) and DCRAW pre-processed (PGM) pictures of the sky with the green laser switched on/off, elevations 10 and 20 degrees</li> <li>Calibration data for Canon EOS 6D Mark II + Fish-Eye lens EF8-16mm at 8mm (wignetting, geometrical distortion)</li> <li>C/C++ software 'green_laser.cpp' for extracting the data from the pictures (incl. Windows-executable). Version 2 has improved median filtering and built-in correction if the laser beam does not go exactly overhead. </li> <li>Detailed description of the software and the method of taking and processing the RAW pictures in PDF format</li> <li>Extracted data in EXCEL workbooks</li> </ul>
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 for ICT Practitioners' Perception of Working from Home During the Covid-19 Pandemic: Exploring Gender Differences
<p>Supplementary Material for the paper <em>ICT Practitioners' Perception of Working from Home During the Covid-19 Pandemic: Exploring Gender Differences. </em></p> <p>The .<em>pdf</em> file contains the form questions used to conduct the survey and the other files contain responses from survey participants.</p>
Replication materials for "Effects of Urbanization in China on the East Asian Summer Monsoon as Revealed by Two Global Climate Models"
<p>The datasets are replication materials for the research "Effects of Urbanization in China on the East Asian Summer Monsoon as Revealed by Two Global Climate Models". They show urbanization-induced changes in surface air temperature (SAT), precipitation, and 850hPa atmospheric circulation from two global climate models (NCAR CESM1.2.1 and FGOALS-g3).</p>
Supplementary Material
<p>Supplementary Files for the publication</p> <p>"How to interpret algorithmically constructed topical<br> structures of scientific fields? A case study of citation-<br> based mappings of the research specialty of invasion<br> biology"</p> <p> </p>
ScienceDex guides
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
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.