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2,135
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2,135 results for “stabling”
Data from: Starvation effects on nitrogen and carbon stable isotopes of animals: an insight from meta-analysis of fasting experiments
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Data from: Closing the circle: how ecologists can prepare their own quality control material to increase confidence in stable isotope data
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Leather oak (Quercus durata) herbarium leaf N and C stable isotopes and tree ring width index
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Data from: Widespread variation in stable isotope trophic position estimates: patterns, causes, and potential consequences
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Data from: Ecological strategies in stable and disturbed environments depend on species specialisation
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Data from: Robustness of predictions of extremely thermally stable proteins in ancient organisms
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Data from: Stable producer–scrounger dynamics in wild birds: sociability and learning speed covary with scrounging behaviour
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Data from: Stable isotope labeled n-alkanes to assess digesta passage kinetics through the digestive tract of ruminants
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Stable isotopes reveal variation in consumption of Pacific salmon by brown bears, despite ready access in small streams
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Stable isotope data from: Use of marine vs. freshwater proteins for egg-laying and incubation by sea ducks breeding in Arctic tundra
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Data from: Allele-specific transcriptome and methylome analysis reveals stable inheritance and cis-regulation of DNA methylation in Nasonia
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Data from: Evolutionary stable sex ratios with non-facultative male-eggs first sex allocation in fig wasps
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Data from: Allopreening in birds is associated with parental cooperation over offspring care and stable pair bonds across years
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Data from: Structure and functioning of intertidal food webs along an avian flyway: a comparative approach using stable isotopes
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Data from: Applied use of alternate stable state modeling in restoration ecology
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Sources of oceanic freshwater content along the western Antarctic Peninsula (PAL-LTER Study Region) determined by the stable isotope composition (d18O) of seawater.
The oceanic distribution of d18O is determined largely by the same processes that control salinity. Surface d18O reflects the magnitude and spatial distribution of freshwater inputs, and it is a conservative tracer in the ocean interior. The great benefit of d18O is obtained from the circumstances under which it exhibits behavior different to that of salinity. One such circumstance derives from the salinity and d18O values in precipitation, with salinity being constant with latitude (typically zero), while in general d18O in precipitation becomes progressively isotopically lighter toward the poles. This results in glacial ice (which derives from high-latitude precipitation) being very isotopically light, enabling d18O to be a useful tracer of glacial discharge to the ocean (e.g., Schlosser et al. 1990; Weiss et al. 1979). Another difference occurs in regions influenced by sea ice, which greatly affects salinity during its formation/melt cycle but has only minimal impact on d18O. This decoupling of the two tracers allows them to be used in tandem to quantitatively separate freshwater inputs from sea ice melt and those from meteoric sources (precipitation plus glacial discharge). For this, a simple three-endmember mass balance can be used. For details please see Meredith, M. P., H. J. Venables, A. Clarke, H. W. Ducklow, M. Erickson, M. J. Leng, J. T. M. Lenaerts, and M. R. van den Broeke. 2013. The freshwater system west of the Antarctic Peninsula: Spatial and temporal changes. Journal of Climate 26:1669-1684.
Galactic cosmic radiation induces stable epigenome alterations relevant to human lung cancer
Human deep space and planetary travel is limited by uncertainties regarding the health risks associated with exposure to galactic cosmic radiation (GCR) and in particular the high linear energy transfer (LET) heavy ion component. Here we assessed the impact of two high-LET ions 56Fe and 28Si and low-LET X rays on genome-wide methylation patterns in human bronchial epithelial cells. We found that all three radiation types induced rapid and stable changes in DNA methylation but at distinct subsets of CpG sites affecting different chromatin compartments. The 56Fe ions induced mostly hypermethylation and primarily affected sites in open chromatin regions including enhancers promoters and edges ( shores ) of CpG islands. The 28Si ion-exposure had mixed effects inducing both hyper and hypomethylation and affecting sites in more repressed heterochromatic environments whereas X rays induced mostly hypomethylation primarily at sites in gene bodies and intergenic regions. Significantly the methylation status of 56Fe ion irradiation sensitive sites but not those affected by X ray or 28Si ions could discriminate tumor from normal tissue for human lung adenocarcinomas and squamous cell carcinomas. Thus high LET radiation exposure leaves a lasting imprint on the epigenome and affects sites relevant to human lung cancer. The 56Fe ion signature may prove useful in monitoring the cumulative biological impact and associated cancer risks encountered by astronauts in deep space. Genome wide DNA methylation profiling of normal human bronchial epithelial cells irradiated with varying doses of 28Si-ion radiation ( 300 MeV/u at 0 0.3 1.0 Gy) 56Fe-ion radiation (600 MeV/u at 0 0.1 0.3 1.0 Gy) or X rays (320 kV at 0 1.0 Gy). Triplicate control and irradiated samples were incubated and sampled at 4 timepoints between 2 and 62 days. The Illumina Infinium 450k Human DNA methylation Beadchip was used to obtain DNA methylation profiles across >485,000 CpGs from collected samples. Samples include: 56Fe ions 4 doses x 4 time points x 3 replicates (4 removed in QC) = 44 samples; 28Si ions = 3 doses x 4 time points x 3 replicates = 36 samples; X ray 2 doses x 4 time points x 3 replicates (2 removed in QC)= 22 samples. Overall design: Bisulphite converted DNA from the 102 samples were hybridized to the Illumina Infinium 450k Human Methylation Beadchip.
BASIN TCP Stable Isotope Composition of CO2 in Terrestrial Ecosystems
This data set reports stable isotope ratio data of CO2 (13C/12C and 18O/16O) associated with photosynthetic and respiratory exchanges across the biosphere-atmosphere boundary. Measurements were made at selected AmeriFlux sites including Harvard Forest, Howland Forest, Rannells Flint Hills Prairie, Niwot Ridge Forest, and the Wind River Canopy Crane Site, which span the dominant ecosystem types of the United States. These data were collected periodically from 2001 through 2004 and are available as an ASCII comma separated file.The goal of this Terrestrial Carbon Processes (TCP) project is to better capture isotopic effects of ecosystem-atmosphere interaction at diurnal, seasonal and interannual time scales by long-term monitoring 13C of CO2 exchange with the atmosphere at weekly intervals. Photosynthesis and respiration in terrestrial ecosystems have opposite effects on diurnal and seasonal patterns on atmospheric CO2 concentration and isotope ratios. This isotopic variation contains information about the functioning of different terrestrial ecosystems.
SAFARI 2000 Aerosol Fatty Acid and Stable Isotope Data, Mongu, Dry Season 2000
The Southern African Regional Science Initiative (SAFARI 2000) was conducted in part to investigate the impacts of the large-scale transport and deposition of increasingly anthropogenic emissions on southern African biogeochemical cycling. Aerosol samples from the Mongu site in eastern Zambia were collected and analyzed to identify chemical biomarkers during the SAFARI 2000 dry season field campaign. Total suspended particulate aerosol samples were collected diurnally for a period of two weeks during August and September of 2000.These data include bulk organic carbon, nitrogen and sulfur stable isotopic measurements of total suspended particulate aerosols and gas chromatography/mass spectrometry (GC/MS) analysis of fatty acids extracted from collected aerosols. These data were used to chemically describe temporal variability in aerosol compositions.
LBA-ECO CD-02 Carbon, Nitrogen, Oxygen Stable Isotopes in Organic Material, Brazil
This data set reports the measurement of stable carbon, nitrogen, and oxygen isotope ratios in organic material (plant, litter and soil samples) in forest canopy profiles and pasture (grasses and shrubs) as well as corresponding carbon and nitrogen tissue concentrations in a number of different sites across Brazil. The sampling design captured the temporal variation in rainfall over the course of several years. Carbon and nitrogen isotope ratios can act as a proxy for interpreting aspects of the carbon and nitrogen cycles in Amazonian rainforests. Data are in three comma-delimited ASCII files.
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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.