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980 results for “sulfate”
Data described in the article "New Bacterial Aryl Sulfotransferases: Effective Tools for Sulfation ofPolyphenols"
<p>Supporting Information contains additional data, Tables,and Figures on the production and biochemicalcharacterization of recombinant ASTs, on the screeningof their sulfation abilities, and structural characterizationof isolated sulfate products.</p>
A Spectroscopic Study of Mars-Analog Materials with Amorphous Sulfate and Chloride Phases: Implications for Detecting Amorphous Materials on the Martian Surface
<p>This repository contains the raw and baseline or continuum corrected data associated with the manuscript entitled:</p> <p> A Spectroscopic Study of Mars-Analog Materials with Amorphous Sulfate and Chloride Phases: Implications for Detecting Amorphous Materials on the Martian Surface</p> <p>This work is being submitted to The Planetary Science Journal</p> <p>ABSTRACT</p> <p>The Chemistry and Mineralogy X-ray diffraction (XRD) instrument aboard the Curiosity rover has consistently identified substantial amorphous material at Gale Crater. The amorphous component is compositionally variable, but often includes elevated sulfur and iron, suggesting that amorphous ferric sulfate (AFS) may be present. Understanding the spectral changes of common Martian materials exposed to ferric sulfate brines as they desiccate to AFS is a key step in bridging the gap between simple mixing studies and analyses of complex/realistic reaction assemblages. Visible and near-infrared reflectance (VNIR), mid-infrared attenuated total reflectance (MIR, FTIR-ATR), and Raman spectra, along with XRD data are presented for basaltic glass, hematite, gypsum, nontronite, and magnesite, each at three grain sizes (<25, 25-63, and 63-180 μm), mixed with ferric sulfate alone or also with NaCl, hydrated through deliquescence, and then rapidly desiccated in 11% relative humidity or via vacuum. All desiccated products are partially or completely XRD amorphous; crystalline phases include starting materials and trace precipitates, leaving the bulk of the ferric sulfate in the amorphous fraction. Due to considerable spectral masking, the detectability of AFS is highly dependent on spectroscopic technique and the observed mineral assemblage. This has strong implications for remote and in-situ observations of Martian samples which include an amorphous component. AFS is only identifiable in VNIR spectra for magnesite, nontronite, and gypsum samples; hematite and basaltic glass samples appear similar to pure materials. Sulfate features dominate Raman spectra for nontronite and basaltic glass samples; the analog material dominates Raman spectra of hematite and gypsum samples. MIR spectra reveal all end members most clearly except for basaltic glass samples, where the analog material is almost completely masked. NaCl leads to similar FTIR-ATR and Raman features, regardless of analog material.</p> <p>Associated photographs of samples in this project can be found at:</p> <p>https://www.lionsandlamms.com/</p> <p>This research was supported by NSF award #1819209.</p>
Data for Simulating the Volcanic Sulfate Aerosols from the 1991 Eruption of Cerro Hudson and their Impact on the 1991 Ozone Hole
<p>Dataset of GEOS output supporting the publication "Simulating the Volcanic Sulfate Aerosols fro the 1991 Eruption of Cerro Hudson and their Impact on the 1991 Ozone Hole".</p>
Data and script files: Gene expression in response to estrone sulfate in Trachemys scripta
Open the record for dataset details and reuse information.
Time series of iron (II) and sulfate concentrations for Beaverdam and Falling Creek Reservoirs in southwestern Virginia, USA during 2016
Water chemistry data were collected approximately weekly from May through October 2016 to study the biogeochemical cycling in Falling Creek Reservoir (FCR) and Beaverdam Reservoir (BVR). FCR and BVR are owned and operated by the Western Virginia Water Authority as primary or secondary drinking water sources for Roanoke, Virginia, USA. The dataset consists of depth profiles of sulfate (SO4) and dissolved Fe(II) samples measured at the deepest site of each reservoir adjacent to the dam. The dissolved Fe(II) samples were speciated from total dissolved Fe using the ferrozine method adapted from Viollier et al. (2000).
Contrasting stream nitrate and sulfate response to recovery from experimental watershed acidification 1988 - 2018
This is the data archive for the corresponding publication with the same title (doi: 10.1007/s10533-020-00711-5). Improvements in air quality have led to ecosystem recovery from acidic deposition, but the mechanisms and trajectories of this recovery are not fully understood. Here, we present long-term stream response and recovery data for paired watersheds at the Bear Brook Watershed in Maine (BBWM) during declining ambient SO4 and NO3 in precipitation. East Bear (EB) received ambient deposition from 1989 to 2018; West Bear (WB) received artificially elevated N+S from 1989 to 2016. The WB treatment was discontinued after 2016, the beginning of the recovery from both the experimental N+S and ambient decline. Stream SO4 in WB gradually declined after the treatment ended, from ~147 μeq L-1 in 2010-16 to ~126 μeq L-1 in 2017-18. The declining S inputs induced desorption of SO4 from soil phase surfaces, with stream loss far exceeding precipitation input. At the current rate of recovery, it will be many decades before the WB stream returns to pre-treatment SO4 concentrations. In contrast, NO3 is only weakly adsorbed in soil, and WB stream NO3 concentrations rapidly declined from ~39 μeq L-1 in 2010-16 to ~5 μeq L-1 in 2017-18, comparable to the N-limited EB stream. The acid anions are strongly coupled to base cation chemistry in streams, and there was a distinct hysteretic response of Ca and Mg to the chronic acidification, as (Ca+Mg) increased rapidly during the initial years, followed by declining values due to depletion of the soil exchange complex. This 30-year monitoring study (1989-2019) provides insights into recovery mechanisms from acidic deposition and highlights the role of abiotic processes in soil that mediate nutrient cycling and retention. Documenting the rapid response of N alongside the slower recovery for S identifies the temporal resolution necessary for other whole-watershed recovery studies.
Napa River Watershed, U.S.A. soil leachate and surface water sulfate sulfur isotopes and concentrations
Sulfur (S) is widely used in agriculture, yet little is known about its fates and consequences within upland, mixed land-use land-cover watersheds. This dataset includes samples collected throughout the Napa River Watershed, California, U.S.A., where high S applications to vineyard agriculture are common. Sample collection focused on tracing the agricultural S “fingerprint” —or the combined S stable isotope composition and concentration of sulfate—through the Watershed. We collected samples during California wet seasons (December – April) over three years (2017-2020). Samples included vineyard agriculture and non-agricultural (primarily forest, grassland, and shrubland) soil water, culvert outflows, tributaries to the Napa River, and Napa River surface water. The data table includes water sample sulfate concentrations and sulfate-S stable isotope measurements as well as the stable isotope composition of S fungicide samples.
Sulfate isotopes in precipitation and streamwater, Hubbard Brook Experimental Forest, 1966 - 1994
Sulfur deposition in the northeastern U.S. has been decreasing since the 1970s and there has been a concomitant decrease in the SO4 lost from drainage waters from forest catchments of this region. It has been established previously that the SO4 lost from drainage waters exceeds SO4 inputs in bulk precipitation, but the cause for this imbalance has not been resolved. The use of stable S isotopes and the availability of archived bulk precipitation and stream water samples at the Hubbard Brook Experimental Forest (HBEF) in New Hampshire provided a unique opportunity to evaluate potential sources and sinks of S by analyzing the long-term patterns (1966–1994) of the d34S values of SO4. In bulk precipitation adjacent to the Ecosystem Laboratory and near Watershed 6 the d34S values were greater (mean: 4.5 and 4.2l, respectively) and showed more variation (variance: 0.49 and 0.30) than stream samples from Watersheds 5 (W5) and 6 (W6) (mean: 3.2 and 3.7; variance: 0.09 and 0.08, respectively). These results are consistent with other studies in forest catchments that have combined results for mass balances with stable S isotopes. These results indicate that for those sites, including the HBEF, where atmospheric inputs are 10 kg S ha-1 yr-1, most of the deposited SO4 cycles through the biomass before it is released to stream water. Results from W5, which had a whole-tree harvest in 1983–1984 showed that adsorption/desorption processes play an important role in regulating net SO4 retention for this watershed-ecosystem. Although the isotopic results suggest the importance of S mineralization, conclusive evidence that there is net mineralization has not yet been shown. However, S mass balances and the isotopic result are consistent with the mineralization of organic S being a major contributor to the SO4 in stream waters at the HBEF. These data were gathered as part of the Hubbard Brook Ecosystem Study (HBES). The HBES is a collaborative effort at the Hubbard Brook Experimental F
Dataset used in publication "The Climatic Effects of Hygroscopic Growth of Sulfate Aerosols in the Stratosphere"
<p>Essential model data used to produce the figures and tables in publication "The Climatic Effects of Hygroscopic Growth of Sulfate Aerosols in the Stratosphere<strong>"</strong></p>
Long-term monitoring reveals forest tree community change driven by atmospheric sulfate pollution and contemporary climate change
Aim: Montane environments are sentinels of global change, providing unique opportunities to assess impacts on species diversity. Multiple anthropogenic stressors such as climate change and atmospheric pollution may act concurrently or synergistically in restructuring communities. Thus, a major challenge for conservation is untangling the relative importance of different stressors. Here, we combine long-term monitoring with multivariate community modeling to estimate the anthropogenic drivers shaping forest tree diversity along an elevational gradient. Location: Camels Hump Mountain, Vermont, USA Methods: We used Generalized Dissimilarity Modelling (GDM) to model spatial and temporal turnover in beta diversity along an elevational gradient over a 50-year period, and tested for spatiotemporal shifts in density and elevational distribution of individual species. GDMs were used to predict community turnover as non-linear functions of changes in elevation, climate and atmospheric pollution. Results: We observed significant shifts in elevational range and density of individual species, which contributed to an overall reduction in the elevational gradient in beta diversity through time. GDMs showed the combined effects of sulfate deposition and temperature as drivers of this temporal reduction in beta diversity. Spatiotemporal changes differed among species, with shifts observed both up and downslope. For example, in a reversal of a previous upslope range contraction, red spruce (Picea rubens Sarg.) increased in density and shifted downslope since the 1990's, occupying warmer, drier climates. Main conclusion: Our results demonstrate that global change is impacting the stratification of forest tree diversity along elevational gradients, but the responses of individual species are complex and variable in direction. We suggest abiotic drivers may directly impact individual species while also indirectly altering species interactions along elevational gradients. Our approach modelling the drivers of compositional turnover quantifies the rate and amount of change in beta diversity along environmental gradients, and serves as a powerful complement to studying species-specific responses.
Hydrogen-bonded xanthones as potential UV absorbers. The synthesis of xanthones from bio-renewable cardanol utilizing a ceric ammonium sulfate (CAS) mediated oxidation reaction
<p>The synthesis of hydrogen-bonded xanthones using the bio-renewable phenol, cardanol is described. Cardanol was initially converted into hydroxy-benzophenones. These benzophenones were converted into xanthones utilizing an oxidative ceric ammonium sulfate (CAS) mediated reaction. Subsequent ruthenium-mediated late-stage oxidation of the xanthones provided hydrogen-bonded xanthones, which displayed good UVA and UVB absorbing properties.</p>
Supplemental information data from: "Evidence for amorphous sulfates as the main carrier of soil hydration in Gale crater, Mars"
<p>This dataset includes the target name and chemical composition of each ChemCam sequence used in the above-mentioned article. The quantification for each ChemCam spectrum in the soils of the Bradbury, Rocknest and Yellowknife Bay area are in percentage mass fractions (wt.%) for most major oxides (i.e., SiO2, TiO2, Al2O3, FeOT , MgO, CaO, Na2O, K2O). Sulfur and hydrogen abundances are expressed respectively in peak area (normalized) and ICA H scores.</p>
Sulfate anomaly during CAFE-EU/BLUESKY 10 days LAGRANTO back trajectories
<p><strong>Short description</strong></p> <p>The dataset contains trajectories along one segment of the flight path during research flight 01 (RF01) during the CAFE-EU/BLUESKY mission. In this segment we observed a particulate sulfate anomaly and are interested in the air mass origin. Therefore, we built a cross structure to sample in total 231 trajectories for each release point. The detailed method and analysis is published in the corresponding and related work.</p> <p> </p> <p><strong>Funding</strong></p> <p>This project has been funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) – TRR 301 – Project-ID 428312742, TPChange: The Tropopause Region in a Changing Atmosphere (<a href="https://tpchange.de/">https://tpchange.de/</a>).</p>
Combined data file for Jokinen et al. "Depth and intensity of the sulfate-methane transition zone control sedimentary molybdenum and uranium sequestration in a eutrophic low-salinity setting", Applied Geochemistry 122, 2020
<p>The datafile contains all the new raw data presented in the figures in the publication.</p>
Dataset of concentrations of bisphenol A, F and S sulfates in wastewater from Spain and Portugal and back-calculation of human exposure by wastewater-based epidemiology
<p>Dataset of concentrations of bisphenol A, F and S sulfates in wastewater from Spain and Portugal and back-calculation of human exposure by wastewater-based epidemiology.</p> <p>Data is provided in MS Excel (xlsx) and CSV formats and contains details on WWTP characteristics, concentrations of bisphenols sulfates and extrapolated population-normalizad daily loads and different extrapolations of human exposure to bisphenols.</p> <p><strong>Further details are provided in the associated publication:</strong></p> <p><em>A. Estévez-Danta, R. Montes, A. Prieto, M.M. Santos, G. Orive, U. Lertxundi, J.B. Quintana, R. Rodil. </em><em>Wastewater-Based Epidemiology Methodology To Investigate Human Exposure To Bisphenol A, Bisphenol F and Bisphenol S.<br>Water Research 2024, 122016. DOI: 10.1016/j.watres.2024.122016.<br><a href="https://doi.org/10.1016/j.watres.2024.122016" target="_blank" rel="noopener">https://doi.org/10.1016/j.watres.2024.122016 </a><br></em></p> <div>The data is deposited in ZENODO:</div> <div><a href="../doi/10.5281/zenodo.10459047">https://zenodo.org/doi/10.5281/zenodo.10459047</a></div> <div> </div> <div><strong>If you reuse the data, please cite the publication and ZENODO deposit mentioned above</strong></div>
The Efficacy of Daily versus Weekly Ferrous Sulfate in Maintaining Normal Serum Ferritin Levels During Pregnancy: A Randomized Controlled Trial
<p>Serum ferritin is the most reliable indication of stored iron in pregnancy, offering a<br>noninvasive way to detect iron deficiency anemia before it occurs. Therefore, this study aimed to<br>determine serum ferritin levels among women receiving daily versus weekly iron supplementation,<br>with a secondary focus on comparing the proportion developing iron deficiency anemia and compli-<br>ance rates between the two groups.<br>Methods: This non-blinded randomized control trial involved non-anaemic pregnant women attend-<br>ing antenatal clinics at two Teaching Hospitals in Osun State. One hundred twenty-five subjects were<br>recruited to receive 65mg in the control group, while another 125 subjects in the active group re-<br>ceived three tablets (195mg) of ferrous sulfate (Fesulf) once weekly for 17 weeks from the 20th to<br>37th weeks of gestation. The primary outcome measure was comparing mean serum ferritin levels in<br>both groups at 37 weeks.<br>Results: Among the 240 subjects analyzed, the 37-week serum ferritin level was higher in the daily<br>group (73.26±26.67µg/L) compared to the weekly group (63.04±30.71 µg/L), p value=0.006. Four<br>(3.36%) and 10 (8.26%) of our subjects had Iron deficiency anaemia. Nine subjects (3.75%) reported<br>dyspepsia as a side effect. Daily 65 mg of Felsulf proved more effective than weekly 195mg in main-<br>taining normal blood ferritin levels during pregnancy.<br>Conclusions: Daily iron supplementation with 65mg ferrous sulfate was more effective at main-<br>taining adequate maternal iron concentration in this group of non-anaemic pregnant women. This<br>dosage is recommended for routine iron supplementation in our environment.</p>
Modeling Sulfate Attack in Modern Concrete for Building Sustainable and Resilient Infrastructure
<p>Corresponding data set for Tran-SET Project No. 17CTAM01. Abstract of the final report is stated below for reference:</p> <p>"External sulfate attack is a complex phenomenon and is manifested in the form of large expansion, cracking, and spalling depending on the exposure solution and material constituent properties. Several models were developed in the past to demonstrate sulfate attack mechanisms that account for the diffusion of sulfate ions into the porous concrete and the successive deformation triggered by the chemical reaction and precipitation of expansive agents. However, none of these models accounts for the effect of the migration of solvent water from the low solute concentration solution to high solute concentration solution driven by the osmotic pressure. Osmotic pressure is believed to cause spalling and cracking of concrete substrates coated with semipermeable membrane that prohibits diffusion of ions from the surroundings into the porous body. In order to determine the effect of osmotic pressure on the deformation of concrete exposed to sulfate solution, a coupled poromechanical model has been developed. Sensitivity analysis has been performed to investigate the effect of material constituent properties and exposure solution on the osmotic pressure induced damage propensity of concrete. It has been found that concrete surface can exhibit high instantaneous tensile stress developed by the gradient in the salt concentration between the pore solution and external surroundings."</p>
Developing and Benchmarking Sulfate and Sulfamate Force Field Parameters via Ab Initio Molecular Dynamics Simulations to Accurately Model Glycosaminoglycan Electrostatic Interactions
<p>To cite and for more details: Riopedre-Fernandez et al. <em>J. Chem. Inf. Model.</em> <strong>2024</strong>, 64 (18), 7122–7134. DOI: <a href="https://doi.org/10.1021/acs.jcim.4c00981">https://doi.org/10.1021/acs.jcim.4c00981</a></p> <p>The dataset includes molecular dynamics simulations of sulfated saccharides and their sulfated analogs in the presence of calcium cations in aqueous solution. Several force field parameter sets were compared (CHARMM36, GLYCAM06, AMOEBA, Drude) and new have been developed (prosECCo75 and GLYCAM-ECC75).</p> <p>The uploaded files contain the following simulation input files or/and simulation trajectories:</p> <p>1) Sulfated_Molecules_Umbrella_Sampling_AIMD: Umbrella sampling ab initio molecular dynamics simulations of calcium-methylsufate and calcium N-methylsulfamate ion pairs in water.</p> <p>2) Sulfated_Molecules_Umbrella_Sampling_FFMD: Umbrella sampling force field molecular dynamics simulations of calcium-methylsufate and calcium N-methylsulfamate ion pairs in water.</p> <p>3) Sulfated_Molecules_AWH_FFMD: Accelerated weight histogram force field molecular dynamics simulations of calcium interacting with both methylsufate and N-methylsulfamate in water.</p> <p>4) Disaccharides_FFMD: Unbiased force field molecular dynamics simulations of calcium-sulfated disaccharide aqueous solutions.</p> <p>UPD. Version 2.0 has updated one of the disaccharide-containing simulations (GLYCAM06, N-sulfation) due to incorrect calcium LJ parameters in the original upload.</p>
Targeting Plasmodium falciparum chondroitin sulfate a ligand: A highly conserved malaria antigen with potential for pregnancy-associated malaria vaccine development
<p>The dataset represents the details of sera samples collected from participants recruited for a longitudinal study. The sera was used for ELISA <em>in vitro</em> assays. The immunoreactivity of PfCSA-L antigen was assessed with the utilization of the gravidity status of the study participants. The antigen is used by the <em>plasmodium falciparum</em> parasite to adhere to the placenta during pregnancy and causes challenges both to the mother and her fetus.</p> <h5>Variables</h5> <ul> <li> <p>Sample_ID - This is the coded details of the study participant.</p> </li> <li> <p>Mean*od <em>_1st_visit, Mean</em>od <em>_2nd_visit, and Mean</em>od *_3rd_visit - These represent the mean reactivity values for antibody (IgG) to PfCSA-L antigen for antenatal visits 1,2 and 3 respectively.</p> </li> <li> <p>Gravida - Refers to the total number of confirmed pregnancies a female has had, regardless of the outcome of the pregnancy.</p> </li> <li> <p>PCR_Results - these are molecular diagnostic results for <em>Plasmodium falciparum</em> to assess whether the study participants were positive or negative for this species. positive = 1 and negative = 0</p> </li> <li> <p>Gestation..weeks - Refers to how far along the pregnancy is, from the first day of the woman's last menstrual cycle to the delivery</p> </li> <li> <p>Newborn outcome - Describes the health status of the childlren when they were born</p> </li> <li> <p>Gravida_class - Describes the different classes of gravida, such that primigravida means single pregnancy, secundigravida-second pregnancy, and tertigravida-third pregnancy</p> </li> <li> <p>Age - Describes the age of the participants recruited for the study</p> </li> <li> <p>HB_level - Describes the amount of hemoglobin in whole blood expressed in grams per deciliter (g/dl) during<br>enrolment</p> </li> <li> <p>Type of delivery - A spontaneous vaginal delivery (SVD) describes when a pregnant female goes into labor without the use of drugs or techniques to induce labor, and delivers her baby in the normal manner, without forceps, vacuum extraction, or a cesarean section (cs)</p> </li> <li> <p>N/A - Missing values for different variables</p> </li> </ul>
Data for manuscript "Prominent Role of Sulfate Reduction in Robust Sulfur Retention in Subtropical Soil"
<p>Data for manuscript "Prominent Role of Sulfate Reduction in Robust Sulfur Retention in Subtropical Soil" submitted to Geophysical Research Letters</p>
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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.