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268 results for “mercury”
Exploring 4200 years of mercury variation in the antlers of high-Arctic wild reindeer
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Co-sampled fruticose and foliose epiphytic lichens as spatial biomonitors of airborne mercury and arsenic in a historical "Gold Rush" mining district
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Marcell Experimental Forest site, station NADP Station MN16, Marcell Experimental Forest, MN, study of mercury in precipitation (volume-weighted concentration) in units of nanogramsPerLiter on a monthly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Marcell Experimental Forest (MAR) contains mercury in precipitation (volume-weighted concentration) measurements in nanogramsPerLiter units and were aggregated to a monthly timescale.
Marcell Experimental Forest site, station NADP Station MN16, Marcell Experimental Forest, MN, study of mercury in precipitation (volume-weighted concentration) in units of nanogramsPerLiter on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Marcell Experimental Forest (MAR) contains mercury in precipitation (volume-weighted concentration) measurements in nanogramsPerLiter units and were aggregated to a yearly timescale.
Marcell Experimental Forest site, station NADP Station MN16, Marcell Experimental Forest, MN, study of mercury in wet deposition in units of nanogramsPerSquareMeter on a monthly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Marcell Experimental Forest (MAR) contains mercury in wet deposition measurements in nanogramsPerSquareMeter units and were aggregated to a monthly timescale.
Marcell Experimental Forest site, station NADP Station MN16, Marcell Experimental Forest, MN, study of mercury in wet deposition in units of nanogramsPerSquareMeter on a yearly timescale
The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest) to support the collection and analysis of long-term ecological datasets. The project is a large synthesis effort focused on improving the accessibility and use of long-term data. At present, there are ~50 state and federally funded research sites that are participating and contributing to the EcoTrends project, including all 26 Long-Term Ecological Research (LTER) sites and sites funded by the USDA Agriculture Research Service (ARS), USDA Forest Service, US Department of Energy, US Geological Survey (USGS) and numerous universities. Data from the EcoTrends project are available through an exploratory web portal (http://www.ecotrends.info). This web portal enables the continuation of data compilation and accessibility by users through an interactive web application. Ongoing data compilation is updated through both manual and automatic processing as part of the LTER Provenance Aware Synthesis Tracking Architecture (PASTA). The web portal is a collaboration between the Jornada LTER and the LTER Network Office. The following dataset from Marcell Experimental Forest (MAR) contains mercury in wet deposition measurements in nanogramsPerSquareMeter units and were aggregated to a yearly timescale.
Rapid Imaging Planetary Spectrograph: 2018 Mercury Exosphere Data
<p>Containing raw FITS files associated with the Schmidt et al. article: "The Rapid Imaging Planetary Spectrograph: Observations of Mercury’s Sodium Exosphere in Twilight." Submitted to The Planetary Science Journal in 2019. IDL analysis code is available at <a href="https://github.com/CarlSchmidt/RIPS-Pipeline">https://github.com/CarlSchmidt/RIPS-Pipeline</a></p>
Database of partially and completely buried craters in the northern smooth plains of Mercury
<p>This table is the database of all the partially and completely buried craters identified in the northern smooth plains of Mercury. Crater classes: A: rim-completely-exposed craters in smooth plains; B: rim-completely-exposed craters on smooth-plains/cratered-terrain boundaries; C: rim-partially-exposed craters in smooth plains; D: rim-partially-exposed craters on smooth-plains/cratered-terrain boundaries; E: rim-completely-buried craters in smooth plains. </p>
Data from: Marine foraging ecology influences mercury bioaccumulation in deep-diving northern elephant seals
Mercury contamination of oceans is prevalent worldwide and methylmercury concentrations in the mesopelagic zone (200–1000 m) are increasing more rapidly than in surface waters. Yet mercury bioaccumulation in mesopelagic predators has been understudied. Northern elephant seals (Mirounga angustirostris) biannually travel thousands of kilometres to forage within coastal and open-ocean regions of the northeast Pacific Ocean. We coupled satellite telemetry, diving behaviour and stable isotopes (carbon and nitrogen) from 77 adult females, and showed that variability among individuals in foraging location, diving depth and δ13C values were correlated with mercury concentrations in blood and muscle. We identified three clusters of foraging strategies, and these resulted in substantially different mercury concentrations: (i) deeper-diving and offshore-foraging seals had the greatest mercury concentrations, (ii) shallower-diving and offshore-foraging seals had intermediate levels, and (iii) coastal and more northerly foraging seals had the lowest mercury concentrations. Additionally, mercury concentrations were lower at the end of the seven-month-long foraging trip (n = 31) than after the two-month- long post-breeding trip (n = 46). Our results indicate that foraging behaviour influences mercury exposure and mesopelagic predators foraging in the northeast Pacific Ocean may be at high risk for mercury bioaccumulation.
Data from: Mercury exposure, stress and prolactin secretion in an Arctic seabird: an experimental study
Life-history theory predicts that long-lived organisms should reduce parental effort under inclement environmental conditions in order to favour long-term survival. Seabirds are long-lived top predators often exposed to environmental endocrine disrupting chemicals such as mercury (Hg). Hg-contaminated birds show disrupted parental behaviour. Avian parental behaviour is governed by two key hormones in birds: corticosterone (CORT, a glucocorticoid hormone) and prolactin (PRL, a pituitary hormone involved in parental care). Any disruption of these hormones may alter the ability of an individual to adjust parental behaviour to environmental conditions. The first aim of this study was to describe the relationships between blood Hg concentrations, plasma PRL and reproductive performance in Arctic black-legged kittiwakes (Rissa tridactyla). We a found negative relationship between plasma initial PRL and blood Hg concentrations in males. Moreover, Hg concentration was negatively related to breeding success in chick-rearing males. Secondly, to study the effect of a chronic increase in CORT levels on the Hg–PRL relationship, we experimentally increased stress with CORT pellet implantation. We predicted that Hg and CORT would act synergistically on PRL and an increase in CORT concentration would steepen the Hg–PRL relationship. However, adding CORT did not steepen the Hg–PRL relationship. Hatching success was significantly lower in CORT-implanted males than in controls, and breeding success was not reduced in CORT-implanted male kittiwakes with high levels of blood Hg. Our results suggest that Hg may impair reproductive performance through a disruption of PRL secretion. Contrary to our prediction, Hg and CORT did not act synergistically and the underlying mechanisms associating CORT and Hg with PRL might be more complex than a single interaction between two factors.
Mercury Amalgam Trough, Calatrava la Vieja-Spain
Mercury-based amalgam trough from Calatrava la Vieja, Castilla-La Mancha, Spain. Christian period, 12th-13th centuries. It was found in the 2005 excavations in the central area of the alcázar. It is complete, although broken from ancient times into several fragments. It was made from a single block of basalt. Originally, it could have been made as a sarcophagus for the burial of some outstanding person of the Military Order of Calatrava. Later it was used to work with liquid mercury. In fact, it was exposed to the direct action of fire, and provides abnormally high mercury impregnation rates in XFR analysis. In a first approximation, traces of copper and tin have also been detected, which seems to confirm its relationship with the artisan processes of production of gold-plated metallic pieces. Modeled from 682 photos in Reality Capture. Barrio Martín, J & Chamón Fernández, J. (2008): Proyecto Dorados. Tecnología, conservación y restauración de los metales dorados medievales. Madrid, 191 págs. Source: Objaverse 1.0 / Sketchfab
Diffraction images for yeast 5-aminolevulinic acid dehydratase complexed with mercury and lead ions.
<p>The diffraction images corresponding to the data used to refine the Hg- and Pb- complexes of yeast ALAD as described in this paper: ‘MAD analyses of yeast 5-aminolaevulinate dehydratase. Their use in structure determination and in defining the metal binding sites.’ P.T. Erskine, E.M.H. Duke, I.J. Tickle, N. Senior, M.J.Warren and J.B. Cooper. Acta Crystallogr. D. (2000), D56, 421-430. </p>
A list of Mercury's near-tail current sheet crossings observed by the MESSENGER spacecraft
<p>The dataset for "North–South Plasma Asymmetry across Mercury's Near-tail Current Sheet" submitted to <i>Geophy. Res. Lett.</i> This dataset contains information about 202 Mercury's near-tail current sheet events.</p>
Altar Equipo#3 Freddie Mercury
Altar de Freddie Mercury (Update) Source: Objaverse 1.0 / Sketchfab
Sodium enrichment of Mercury's subsurface through diffusion
<p>The data contains the temporal evolution of the sodium density in Mercury's subsurface. The four files correspond to the the sodium density evolution at the cold and hot longitudes, and for two different surface binding energy distributions.</p> <h2>Description of the data and file structure</h2> <p>Each file is structured as follow :</p> <p>Line 1 : Thickness of each layer of regolith starting from the surface</p> <p>Line 2 : Porosity of each layer starting from the surface</p> <p>Each following 5 lines correspond to the evolution over 3000 seconds with :</p> <p>Line 3 + (5 n) : Time</p> <p>Line 4 + (5 n) : Mean surface binding energy</p> <p>Line 5 + (5 n) : Density of adsorbates per layer starting from the surface</p> <p>Line 6 + (5 n) : Density of gaseous sodium per layer starting from the surface</p> <p>Line 7 + (5 n) : Density of sodium (adsorbate and gas) per layer starting from the surface</p> <p>The figures in the letter use only the density of adsorbates</p> <h2>Sharing/Access information</h2> <p>The data and the software can also be asked directly to the author of the letter.</p> <h2>Code/Software</h2> <p>The software is detailed in the letter.</p>
Fig. 3 in Mercury accumulation in adults of two large species of diving beetles (Coleoptera: Dytiscidae)
Fig. 3. Mercury concentrations in different female morphs of C. lateralimarginalis and D. circumcinctus. Designations as in Fig.1. Рис. 3. Содержание ртути в раЗных морфах самок C. latermarginalis и D. circumcinctus. ОбоЗначениЯ как на Рис. 1.
Fig. 4 in Mercury accumulation in adults of two large species of diving beetles (Coleoptera: Dytiscidae)
Fig. 4. Dependence between mercury concentrations and body weight Рис. 4. Диаграмма Зависимости концентрации ртути от массы тела.
Fig. 2 in Mercury accumulation in adults of two large species of diving beetles (Coleoptera: Dytiscidae)
Fig. 2. Histogram of mercury concentrations in the studied species. Рис. 2. Гистограмма распределениЯ концентрации ртути длЯ иЗученных видов.
Fig. 1 in Mercury accumulation in adults of two large species of diving beetles (Coleoptera: Dytiscidae)
Fig. 1. Average dry weight of the beetles and average mercury concentration (Hg) in the studied species (median; IQR; observable minimum and maximum; outliers). Рис. 1. Средний сухой вес жуков (Weight), и обЩаЯ концентрациЯ ртути (Hg) в иЗученных видах (медиана; межквартильный раЗмах; наблюдаемые минимум и максимум; выбросы).
Mercury isotopic compositions in fine particles and offshore surface seawater in a coastal area of East China: Implication for Hg sources and atmospheric transformations
<p>Original data:</p> <p>sheet 1: PHg concentration</p> <p>sheet2: Chemical components in PM2.5</p> <p>sheet3: PHg isotopes</p> <p>sheet4: Seawater Hg isotopes</p>
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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.