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9 results for “Humic substances”
datasets for "Atmospheric Humic-Like Substances (HULIS) Act As Ice-Nucleating Particles "
<p>These are datasets for manuscript titled "Atmospheric Humic-Like Substances (HULIS) Act As Ice-Nucleating Particles "</p>
Data from: A proteomic method to extract, concentrate, digest, and enrich peptides from fossils with colored (humic) substances for mass spectrometry analyses
Humic substances are break-down products of decaying organic matter that co-extract with proteins from fossils. These substances are difficult to separate from proteins in solution, and interfere with analyses of fossil proteomes. We introduce a method combining multiple recent advances in extraction protocols to both concentrate proteins from fossil specimens with high humic content, and remove humics, producing clean samples easily analyzed by mass spectrometry (MS). This method includes: 1) a non-demineralizing extraction buffer that eliminates protein loss during the demineralization step in routine methods; 2) filter-aided sample preparation (FASP) of peptides, which concentrates and digests extracts in one filter, allowing the separation of large humics after digestion; 3) centrifugal stage-tipping, which further clarifies and concentrates samples in a uniform process performed simultaneously on multiple samples. We apply this method to a moa fossil (~800¬–1000 yr) dark with humic content, generating colorless samples and enabling the detection of more proteins with greater sequence coverage than previous MS analyses on this same specimen. This workflow allows analyses of low-abundance proteins in fossils containing humics, and thus may widen the range of extinct organisms and regions of their proteomes we can explore with MS.
Data from: A proteomic method to extract, concentrate, digest, and enrich peptides from fossils with colored (humic) substances for mass spectrometry analyses
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umami experiment-Analysis of the effect of amino-acids and humic substances on the transcriptome of Arabidopsis
GEO Series GSE297649. Arabidopsis thaliana. 9 samples. Type: Expression profiling by high throughput sequencing.
Data for: On the adsorption mechanism of humic substances on kaolinite and their microscopic structure
<p>Soil organic matter (SOM) and various inorganic minerals represent key components of soils. During pedogenesis and due to biological activity these species interact, having a crucial impact on the formation of an aggregated soil structure with a hierarchical arrangement from nano to macro scale. In this process, the formation of organo–mineral microaggregates represents a dominant factor affecting soil functions and properties. This study focuses on the interactions between humic substances (HSs) and the mineral kaolinite as typical representatives of SOM and soil minerals. By performing classical molecular dynamics (MD) simulations on models of HSs and kaolinite, we demonstrate how two dominant but chemically different kaolinite surfaces affect the stability of HSs microaggregates. By analyzing volumetric, structural, and energetic properties of SOM–kaolinite models, we explain possible mechanisms of the formation of stable SOM–clay aggregates and show how a polarized environment affects the electrostatic interactions, stabilizing the microscopic structure of SOM–mineral aggregates. Our results showed that when stable aggregates of HSs are confined in kaolinite nanopores, their interactions with kaolinite surfaces disintegrate them into smaller subaggregates. These subaggregates are adsorbed more strongly on the polar aluminol surface of kaolinite compared to less the active hydrophobic siloxane surface.</p> <p>E. Galicia-Andrés, C. Oostenbrink, M.H. Gerzabek and D. Tunega<br>On the adsorption mechanism of humic substances on kaolinite and their microscopic structure<br>Minerals 11 (2021), 1138<br>doi: <a href="https://doi.org/10.3390/min11101138">10.3390/min11101138</a></p>
The complex interplay of genetic pathways in C.elegans following the treatment with humic substances
GEO Series GSE35360. Caenorhabditis elegans. 27 samples. Type: Expression profiling by array.
Raw_data_Morphological and physiological impact of humic substances on tomato growth under both non-stress and osmotic stress conditions
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Data for Ligand exchange provides new insight into the role of humic substances in the marine iron cycle
<p>This repository contains (i) all the data included in the study "Ligand exchange provides new insight into the role of humic substances in the marine iron cycle" in seven XSLX files, and (ii) twelve scripts and eight CSV files used to model the data with Dynafit software (http://www.biokin.com/dynafit/). A readme file is included to guide the calculations.</p> <p>The data sets originated when iron-saturated complexes of humic substances (fulvic acid and humic acid from the International Humic Substances Society) in seawater were subjected to iron ligand exchange after addition of an iron-free competing ligand, in most cases desferrioxamine B. In four cases EDTA and protoporphyrin IX were used as competing ligands to understand the effect of the chemical nature of the competing ligand. Additionally, reversibility was also tested. The concentration of the Fe-humic complexes was monitored by catalytic cathodic stripping voltammetry (10.4319/lo.2009.54.2.0610), a method not sensitive to the other iron species and free iron present.</p>
Transcriptional characterization of maize roots in response to nitrate (NO3-), Water-Extractable Humic Substances (WEHS) and NO3-+WEHS.
GEO Series GSE103184. Zea mays. 15 samples. Type: Expression profiling by array.
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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.