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2,394 results for “ms”
Ultrasonication followed by enzymatic hydrolysis as a sample pre-treatment for the determination of Ag nanoparticles in edible seaweed by SP-ICP-MS
<p>Seaweed can bioaccumulate <a href="https://www.sciencedirect.com/topics/chemistry/nanomaterial">nanomaterials</a> that would be transferred to the trophic chain. This work describes the optimization of a method for the separation of <a href="https://www.sciencedirect.com/topics/chemistry/silver-nanoparticle">silver nanoparticles</a> (AgNPs) from seaweed using an ultrasound-assisted <a href="https://www.sciencedirect.com/topics/chemistry/enzymatic-hydrolysis">enzymatic hydrolysis</a> method and ulterior determination by single particle <a href="https://www.sciencedirect.com/topics/chemistry/inductively-coupled-plasm-mass-spectrometry-icpms">inductively coupled plasma mass spectrometry</a> (SP-ICP-MS).</p> <p>The following parameters affecting the isolation of AgNPs were optimized using a <em>Palmaria palmata</em> (red seaweed) sample previously exposed to AgNPs: type of <a href="https://www.sciencedirect.com/topics/chemistry/sonication">sonication</a> (bath vs. ultrasonic probe), ultrasound amplitude, sonication time, sonication mode (pulsed vs. continuous sonication), concentration of the enzymes mixture (Macerozyme R-10®), and enzymatic hydrolysis time. The stability of AgNPs during extraction was tested by <a href="https://www.sciencedirect.com/topics/chemistry/transmission-electron-microscopy">transmission electron microscopy</a> (TEM) and using a standard of 15 nm of polyvinylpyrrolidone (PVP)-coated AgNPs analyzed by SP-ICP-MS. The analytical performance was evaluated with good results. For total Ag determination, the limits of detection and quantification were 2.2 and 7.7 ng g<sup>−1</sup>, respectively; and for AgNPs determination, the limits of detection in size and number were 14 nm and 4.34 × 10<sup>7</sup> part g<sup>−1</sup>, respectively. Besides, the matrix effect, the repeatability and the analytical recovery were also studied. Finally, the method was applied to the analysis of several red (<em>Palmaria palmata</em>) and green (<em>Ulva</em> sp.) seaweed samples.</p>
DATA for 3D PIC simulation of MS waves
<p>Data for the paper of Excitation of magnetosonic waves in the Earth's dipole magnetic field: 3D PIC simulation</p>
Network pharmacology and UPLC-Q-TOF-MS-based method to explore the underlying mechanism of Shaoyao–Gancao decoction acting on atopic dermatitis
<p>This study aimed to investigate the immunomodulation and anti-inflammatory effects of SGD and further explore its pharmacodynamics material basis and potential molecular mechanisms on atopic dermatitis (AD) disorder.</p>
LC-MS/MS data of pharmaceutical compounds for lIbrary building
<p>Dataset used for MergeION package testing are provided by Janssen Pharmaceutica. It consists of known standard pharmaceutical compounds for which high quality Q-Exactive MS/MS data is provided. Details about these compounds can be found in Metadata_Library.txt. All datasets were acquired in positive ion mode through either DDA (data-dependent acquisition) or targeted MS/MS. Raw data in profile mode were converted into centroid-mode mzML or mzXML files using MSConvertGUI</p> <p> </p>
MALDI-MS dataset for use with open-source untargeted metabolomic workflow for complex biological samples
<p class="MsoNormal">Untargeted metabolomics is a powerful tool for measuring and understanding complex biological chemistries. However, employment, bioinformatics and downstream analysis of mass spectrometry (MS) data can be daunting for inexperienced users. Numerous open-source and free to-use data processing and analysis tools exist for various untargeted MS approaches, but choosing the 'correct' pipeline isn't straight-forward. This data set can be used in conjunction with a user-friendly online guide which presents a workflow for connecting these tools to process, analyse and annotate various untargeted MS datasets. The workflow is intended to guide exploratory analysis in order to inform decision-making regarding costly and time-consuming downstream targeted MS approaches. The workflow provides practical advice concerning experimental design, organisation of data and downstream analysis, and offers details on sharing and storing valuable MS data for posterity. The workflow is editable and modular, allowing flexibility for updated/ changing methodologies and increased clarity and detail as user participation becomes more common allowing contributions and improvements to the workflow via the online repository. </p>
MALDI-TOF-MS spectra of modern South African rodents for ZooMS
<p>MALDI-TOF-MS spectra of extracted collagen from modern South African rodents. These spectra were used to develop peptide markers for Zooarchaeology by Mass Spectrometry (ZooMS). All spectra are uploaded in .mzml format.</p> <p>One sample per species was also analyzed with LC-MS/MS. This data is available at PXD040129 and were uploaded through MassIVE (MSV000091290).</p>
LC-MS/MS plasma protein measurements from children with bacterial and viral infections - "MS-A"
<p>LC-MS/MS data generated from plasma samples from children with bacterial and viral infections. </p>
LC-MS/MS plasma protein measurements from children with bacterial and viral infections - "MS-B"
<p>LC-MS/MS data generated from plasma samples from children with bacterial and viral infections. </p>
Data sets for "Updated MS²PIP web server supports cutting-edge proteomics applications"
<p>Data sets and code used to train and evaluate new MS²PIP models. </p>
Guided a Research Project titled "Bottle Biospheres: An Innovative Idea to understanding life" which was submitted by Ms. Dakhni Fatima in Pure Sciences. December 12, 2022.
<p>Guided a Research Project titled <strong>“Bottle Biospheres: An Innovative Idea to understanding life” </strong>which was submitted by <strong>Ms. Dakhni Fatima </strong>in <strong>Pure Sciences in Aavishkar. December 12, 2022</strong></p>
UAV surveying data and surface rupture for the 2022 Ms 6.9 Menyuan earthquake, along Haiyuan fault system, NE Tibet
<p>The unmanned aerial vehicle (UAV) data was acquired by a DJI (Dajiang Innovations Science and Technology Co., Ltd.) Phantom 4 RTK. High resolution digital elevation and orthophoto models (DEM/DOM) was produced by Agisoft Metashape Professional software.</p> <p>The LLL1-12 and TLS1-5 images are the DOMs covering the surface ruptures along the Leng Long Ling fault and Tuolai Shan fault from west to east, respectively.</p> <p>The 2022 Menyuan earthquake surface rupture (.kmz file) was obtained based on the interpretation of UAV DOM data. </p> <p>The DEM files are used to calculate the offsets in the Menyuan earthquake paper (<em>The 2022, Ms 6.9 Menyuan earthquake: surface rupture, Paleozoic suture re-activation, slip-rate and seismic gap along the Haiyuan fault system, NE Tibet</em>).</p> <p> </p> <p> </p>
Data from: Potential of MALDI−TOF MS-based proteomic fingerprinting for species identification of Cnidaria across classes, species, regions and developmental stages
<p><span>Morphological identification of cnidarian species can be difficult throughout all life stages due to the lack of distinct morphological characters. Moreover, in some cnidarian taxa genetic markers are not fully informative, and in these cases combinations of different markers or additional morphological verifications may be required. Proteomic fingerprinting based on MALDI-TOF mass spectra was previously shown to provide reliable species identification in different metazoans including some cnidarian taxa. For the first time, we tested the method across four cnidarian classes (Staurozoa, Scyphozoa, Anthozoa, Hydrozoa) and included different scyphozoan life-history stages (polyp, ephyra, medusa) into our dataset. Our results revealed reliable species identification based on MALDI-TOF mass spectra across all taxa with species-specific clusters for all 23 analyzed species. In addition, proteomic fingerprinting was successful for distinguishing developmental stages, still by retaining a species specific signal. Furthermore, we identified the impact of different salinities in different regions (North Sea and Baltic Sea) on proteomic fingerprints to be negligible. In conclusion, the effects of environmental factors and developmental stages on proteomic fingerprints seem to be low in cnidarians. This would allow using reference libraries built up entirely of adult or cultured cnidarian specimens for the identification of their juvenile stages or specimens from different geographic regions in future biodiversity assessment studies.</span></p>
Metabolites identified by UPLC-MS/MS method
<p>Metabolites identified by UPLC-MS/MS method including transition, expected retention time and potential overlaps</p>
Lichens as bioindicators of monitoring of the selective air pollution, Zaabrze (Poland) - chromatograms of GC-MS
<p>Detailed geochemical analyses were performed on 21 powdered samples after their extraction using ultrasound Elmasonic Easy with a dichloromethane (DCM) and methanol (MeOH) mixture (1:1 vol). Extracts were separated into aliphatic-, aromatic-, semipolar- and polar fractions by column chromatography. Silica-gel was first activated at 120 °C for 24 h, cooled, and poured into Pasteur pipettes. Foour eluents were used for fraction collection, namely, n-pentane for the aliphatic fraction, n-pentane and DCM (7:3) for the aromatic fraction, acetone and DCM (1:1) for the semipolar fraction, and DCM and methanol (1:1) for the polar fraction. The semipolar - and polar fraction was derivatized with MTBSTFA (N-tertbutyldimethylsilyl-N-methyltrifluoroacetamide). Samples were derivatized with MTBSTFA dissolved in super-dehydrated n-hexane, and heated at 70 °C for 3 h. The composition of the separated extracts was analyzed by gas chromatography–mass spectrometry (GC–MS) using an Agilent gas chromatograph 7890A coupled with a mass spectrometer 5975C XL MDS. A DB-5UI column was applied (60 m × 250 μm id, 0.25 μm stationary phase film), with He (purity of 99.9999%) as a carrier gas. The experimental conditions were as follows: injection volume of 1 μL; split/splitless mode; initial temperature of 45 ◦C (isothermal for 1 min); heating rate up to 100 ◦C at 20 ◦C/min, then 3 ◦C/min to 280 ◦C for 66.25 min. The mass spectrometer worked in electron ionization (EI) mode at 70 eV in full scan mode and scanned from 50 to 650 Da.<br> Dr Ewa Szram, employed at the Institute of Earth Sciences, Faculty of Natural Sciences, Silesian University in Katowice, carried out the project. This research was funded by the National Science Centre, Poland MINIATURA-6 2022/06/X/ST10/00338 “Lichens as bioindicators of monitoring of the selective air pollution”</p>
LA-ICP-MS/MS-based Rb-Sr isotope mappings for geochronology
<p>This is a complementary dataset to the publication LA-ICP-MS/MS-based Rb-Sr isotope mappings for geochronology by Martin Kutzschbach & Johannes Glodny.</p> <p>It contains both raw and corrected isotope ratios of reference materials and sample of all six sessions. Furthermore, the dataset includes Rb/Sr isotope ratios and Rb-Sr ages for every individual pixel within the mica segments outlined in the mappings. Additionally, high-resolution, unedited elemental maps, isotope ratio maps, and Rb-Sr age maps are provided for GER2B, Wil1A, and GÄD08</p>
MALDI-TOF MS spectra of archaeological whale bone specimens from Atlantic Europe
<p class="MsoNormal"><span>Whale bones are regularly found during archaeological excavations. Identification of these specimens to taxonomic levels is problematic due to their fragmented state. This lack of taxonomic resolution limits understanding of the past spatiotemporal distributions of whale populations and reconstructions of early whaling activities. To overcome this challenge, we performed Zooarchaeology by Mass-Spectrometry on an unprecedented selection of 719 archaeological and palaeontological specimens of probable whale bone from Atlantic European contexts, from the Middle to Late Neolithic (c.3500–2500 BCE) to the eighteenth century CE.</span></p> <p class="MsoNormal"><span>The results show high numbers of Balaenidae (most likely North Atlantic right whale (<em>Eubalaena glacialis</em>)) and grey whale (<em>Eschrichtius robustus</em>) specimens, two species no longer present in the eastern North Atlantic. Many of these specimens derive from contexts associated with the known medieval whaling cultures of the Basques, northern Spaniards, Normans, Flemish, Frisians, Anglo-Saxons, and Scandinavians. This association raises the likelihood that pre-industrial whaling impacted these taxa, contributing to their extinction and extirpation respectively. Much lower numbers of other large whale taxa were identified, suggesting that it was once abundant and accessible whales that suffered the greatest long-term impact. The pattern of natural abundance leading to over-exploitation, well-documented for other taxa, is thus applicable to early whaling. </span></p>
A suspended hot drop of 1,3-propanediol with 4.1 mm base diameter, 190oC core temperature, and approaching air flow at 0.34 m/s, recorded at 10,000 fps and 99 ms exposure time, with default video playback speed 30 fps
<p>A suspended hot drop of 1,3-propanediol with 4.1 mm base diameter, 190<sup>o</sup>C core temperature, and approaching air flow at 0.34 m/s, recorded at 10,000 fps and 99 ms exposure time, with default video playback speed 30 fps</p>
Neogloboquadrina pachyderma LA-ICP-MS spectral files and stable isotope data from: Geochemical differences between alive, uncrusted and dead, crusted shells of Neogloboquadrina pachyderma: Implications for paleoreconstruction
<p>Planktic foraminiferal-based trace element-calcium ratios (TE/Ca) are a cornerstone in paleoceanographic reconstructions. While TE-environment calibrations are often established through culturing experiments, shell growth in culture is not always consistent with growth in a natural setting. For example, many species of planktic foraminifera thicken their shell at the end of their life cycle, producing a distinct 'gametogenic' crust. Crust is common in fossil foraminifers, however, shells grown in culture do not often develop a thick crust. Here we investigate potential vital effects associated with the crusting process by comparing the trace element (Mg/Ca, Na/Ca, Ba/Ca, Sr/Ca, Mn/Ca, Zn/Ca) and stable isotope (δ<sup>13</sup>C, δ<sup>18</sup>O) composition of alive, fully mature, uncrusted shells to recently deceased, crusted shells of <em>Neogloboquadrina pachyderma</em> collected from the same plankton tows off the Oregon (USA) coast. We find that uncrusted (N = 55) shells yield significantly higher Ba/Ca, Na/Ca, Mn/Ca, and Sr/Ca than crusted (N = 66) shells, and crust calcite records significantly lower TE/Ca values for all elements examined. Isotopic mixing models suggest that the crust calcite accounts for ~40 to 70% of crusted shell volume. Comparison of foraminiferal and seawater isotopes indicate that <em>N. pachyderma</em> lives in the upper 90 m of the water column, and that crust formation occurs slightly deeper than their average living depth habitat. Results highlight the necessity to establish calibrations from crusted shells, as application of calibrations from TE-enriched uncrusted shells may yield attenuated or misleading paleoceanographic reconstructions.</p>
EC-MS data accompanying the EC-MS quantification tutorial
<p>EC-MS data accompanying the EC-MS quantification tutorial published on ixdat/tutorials: https://github.com/ixdat/tutorials</p>
Menak, Add MS 12309
Menak, Javanese manuscript containing stories of Amir Hamza, uncle of the Prophet Muhammad, written in Javanese in Arabic script, written between 1792 and 1812. 1,450 folios of Javanese paper. http://searcharchives.bl.uk/primo_library/libweb/action/display.do?tabs=detailsTab&ct=display&fn=search&doc=IAMS040-002042067&indx=1&recIds=IAMS040-002042067&recIdxs=0&elementId=0&renderMode=poppedOut&displayMode=full&frbrVersion=&dscnt=0&frbg=&scp.scps=scope%3A%28BL%29&tab=local&dstmp=1526286592148&srt=rank&mode=Basic&&dum=true&vl(freeText0)=menak&vid=IAMS_VU2 Source: Objaverse 1.0 / Sketchfab
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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.