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1,393 results for “traces”
FIG. 1 in New data on the Permian ecosystem of the Rodez Basin: ichnofauna (traces of protostomians, tetrapods and fishes), jellyfishes and plants from Banassac-Canilhac (Lozère, southern France)
FIG. 1. — Geographical and geological context: A, Location of the study area in France; B, Location of the Rodez Basin, and location of La Canourgue/Campagnac area (indicated by the black rectangle); C, Simplified geological map of La Canourgue/Campagnac area (modified after Defaut et al. 1990) and location of tracksites mentionned in Gand (1987): 1, La Forêt; 2, Cantacoyou; 3, Le Bousquet; 4, Route du Viaduc; 5, Malvezy; 6, Saint-Laurent.
Surfactant Transport on Evolving Surfaces - Solutions of Space-Time Trace Finite Element Methods visualized.
<p>Videos of numerical experiments in the article "An accurate and robust Eulerian finite element method for partial differential equations on evolving surfaces" by H. Sass and A. Reusken. Surfactant transport on evolving surfaces with high curvatures and topological singularities is illustrated.</p>
6TiSCH traces in real-world network deployment
<p><strong>Introduction</strong></p> <p>This data set includes the detailed logs of the 6TiSCH network created with the Contiki-NG OS running on LOG-a-TEC testbed, which is located in the park area of the Jožef Stefan Institute, Ljubljana. The data set can be used to analyze the operation of the 6TiSCH network in a real-world outdoor environment, to detect network anomalies or environmental changes, to classify network uptime, throughput and traffic volume, etc. The generated logs contain all metrics (RSSI, LQI, SQN, ASN, IPv6 address, frequency channel, timestamp) for in-depth analysis.<br> <br> <strong>Network setup</strong></p> <p>6TiSCH network was set up with 15 testbed devices which and operated for 5 days. To generate additional traffic, the devices sent a UDP packet (size 10B) to the root of the network at intervals of 10 seconds (+ random jitter). Besides application packets (UDP), the devices also exchanged packets for network maintenance - UDP packets can be identified by searching for a packet length.</p> <p><strong>Data set structure</strong></p> <p>The included folder contains the logs from all devices used. The suffix of the folder name represents the last 3 digits of the device's IP address. Each folder contains several files. The prefix of a file stands for the order of the collected logs - after 1 hour elapsed, the measurements are saved in a new file.</p> <p> </p>
Text-fig. 5. Remains of the jaw apparatus of ammonoids from the Mospyne Formation. a: Part of the upper jaw of an unknown ammonoid (stratigraphic level No. 5). b: Part of the jaw of an unknown ammonoid (stratigraphic level No. 5). c: Upper jaw of an unknown ammonoid (stratigraphic level No. 4). d: Part of the upper jaw of an unknown ammonoid (stratigraphic level No. 4). e: Lower (?) jaw of an unknown ammonoid (stratigraphic level No. 4); the arrow indicates the trace fossil. f: Part of the lower jaw of an unknown ammonoid (stratigraphic level No. 8). Scale bars 2 mm. in Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine
Text-fig. 5. Remains of the jaw apparatus of ammonoids from the Mospyne Formation. a: Part of the upper jaw of an unknown ammonoid (stratigraphic level No. 5). b: Part of the jaw of an unknown ammonoid (stratigraphic level No. 5). c: Upper jaw of an unknown ammonoid (stratigraphic level No. 4). d: Part of the upper jaw of an unknown ammonoid (stratigraphic level No. 4). e: Lower (?) jaw of an unknown ammonoid (stratigraphic level No. 4); the arrow indicates the trace fossil. f: Part of the lower jaw of an unknown ammonoid (stratigraphic level No. 8). Scale bars 2 mm.
Text-fig. 4. Taphonomic features of the studied localities of ammonoids. a: Sandstone slab with fragmentary remains of productid and spiriferid brachiopods, orthocerids, coiled nautiloids and ammonoids (stratigraphic level No. 3). b: Shell debris cluster and fragment of crushed ammonoid conch (stratigraphic level No. 1). c: Epibionts on the surface of an ammonoid conch (stratigraphic level No. 5). d: Cluster of bivalves, gastropods and cephalopods remains in a siderite nodule (stratigraphic level No. 5). e: Fragment of an ammonoid conch (stratigraphic level No. 3). f: Fragment of an ammonoid conch (?) with terminal aperture and brachiopod valve (stratigraphic level No. 3). g: Specimen of?Anthracoceratites sp. with conch injuries (shown by arrows) (stratigraphic level No. 8). h, i: Bioerosion trace fossils Cyclopuncta girtyi ELIAS, 1958 on the fragments of cephalopod conchs (stratigraphic level No. 5). j: Limonitized conchs of the ammonoid (stratigraphic level No. 7). k: Fragment of an ammonoid conch (stratigraphic level No. 5). Scale bars 10 mm. in Late Bashkirian Ammonoids From The Mospyne Formation Of The Donets Basin, Ukraine
Text-fig. 4. Taphonomic features of the studied localities of ammonoids. a: Sandstone slab with fragmentary remains of productid and spiriferid brachiopods, orthocerids, coiled nautiloids and ammonoids (stratigraphic level No. 3). b: Shell debris cluster and fragment of crushed ammonoid conch (stratigraphic level No. 1). c: Epibionts on the surface of an ammonoid conch (stratigraphic level No. 5). d: Cluster of bivalves, gastropods and cephalopods remains in a siderite nodule (stratigraphic level No. 5). e: Fragment of an ammonoid conch (stratigraphic level No. 3). f: Fragment of an ammonoid conch (?) with terminal aperture and brachiopod valve (stratigraphic level No. 3). g: Specimen of?Anthracoceratites sp. with conch injuries (shown by arrows) (stratigraphic level No. 8). h, i: Bioerosion trace fossils Cyclopuncta girtyi ELIAS, 1958 on the fragments of cephalopod conchs (stratigraphic level No. 5). j: Limonitized conchs of the ammonoid (stratigraphic level No. 7). k: Fragment of an ammonoid conch (stratigraphic level No. 5). Scale bars 10 mm.
Relative role of border restrictions, case finding and contact tracing in controlling SARS-CoV-2 in the presence of undetected transmission: a mathematical modelling study
<p>Data and code for publication on <em>Relative role of border restrictions, case finding and contact tracing in controlling SARS-CoV-2 in the presence of undetected transmission: a mathematical modelling study</em></p>
Concentrations of dissolved dimethyl sulfide (DMS), methanethiol and other trace gases in context of microbial communities from the temperate Atlantic to the Arctic Ocean
<p>This archive contains bioinformatic code and data files to reproduce bacterial analyses from Gros et al. (<em>Biogeosciences; </em>https://doi.org/10.5194/bg-2022-150). In this study, seawater samples collected along an Atlantic-Arctic transect (55-80°N) were evaluated for microbial community composition and trace gas concentrations. Microbes were sampled underway using "AUTOFIM" automatic filtration; and bacterial communities amplicon-sequenced using 16S rRNA gene primers. Raw sequence data is available at ENA under BioProject PRJEB50492.</p> <p>The archive contains:<br> - Rmarkdown for primer-clipping, ASV generation and taxonomy assignment: 1_DADA.Rmd<br> - Rscript for ASV and metadata processing; alpha-diversity calculations: 2_DataLoad.R<br> - Rscript for generation of manuscript figures: 3_Results.R<br> - Rscript for generation of supplementary figures: 4_Supplement.R<br> - Metadata and environmental parameters as .txt files</p>
Dissolved trace metal depth profile concentrations from the North Pacific Ocean Gradients 3 (KM1906) spring 2019 cruise
<p>This dataset contains dissolved trace metal depth profiles collected in the North Pacific Ocean in spring of 2019 on the KM1906 Gradients 3 cruise (Chief Scientist E. Virginia Armbrust). The project was funded by the Simons Collaboration on Ocean Processes and Ecology Gradients program (SCOPE award 426570SP to SGJ). The samples were collected by trace metal clean rosette. Data were produced at the University of Southern California Marine Trace Elements Lab run by Prof. Seth G. John. Briefly, the metals were preconcentrated using an Elemental Scientific Inc. SeaFast automated robot, detected by Element 2 ICP-MS and quantified using isotope dilution as described in Hawco et al. 2020. <em>GCA</em> <a href="https://doi.org/10.1016/j.gca.2020.05.005">https://doi.org/10.1016/j.gca.2020.05.005</a>. All concentrations are dissolved (<0.2um SUPOR filter) and reported as nmol/L. </p>
Polymeric and inorganic sorbents as a green option to recover critical raw materials at trace levels from sea saltwork bitterns
<p>Seawater mining is certainly a green alternative source for obtaining minerals as seawater is a natural renewable and unlimited available resource. Based on the lack of ways to obtain certain raw materials, the European Union has created the Critical Raw Materials (CRM) list. Seawater contains almost all elements, including some of those present in the CRM list, but only a few are economically feasible to be extracted as most of them are considered Trace Elements (TEs) (μg L−1). Therefore, an improvement in TEs extraction must be carried out. Saltwork brines can be considered as they are naturally concentrated (20–40 times) compared to seawater, which makes the extraction and recovery of TEs easier. Selective polymeric and inorganic sorbents were evaluated for TEs recovery (Li, B, Co, Ga, Ge, Rb, Sr, and Cs) from synthetic brines mimicking sea saltwork bitterns. Distribution coefficients were determined to characterize selectivity patterns toward TEs. Although amine and sulphonic sorbents showed low sorption of TEs, carboxylic sorbents presented good sorption and recovery for Co and Ga. Among phosphonic/phosphinic sorbents, MTX8010 achieved >98% sorption and desorption of Ga. Aminophosphonic and iminodiacetic are the best sorbents for Sr, but its desorption was incomplete. B was only sorbed by N-Methylglucamine (>98%) and N-Methylpyridine sorbents (75%), and its desorption was 37–64% and 66−>99%, respectively. SbTreat presented good performance targeting Ga and Ge, and CsTreat demonstrated high Cs uptake, but its desorption was unachieved. The most highly selective sorbents could provide the possibility of building a green option to recover critical elements for societal development in the next decade.</p>
Data for: Intra- and interspecific variation in trace element concentrations in feathers of North European Trans-African migrants
<p>The knowledge of migratory connectivity is important for understanding the potential drivers of populations and it is thus important for conservation implications. Migratory connectivity of species can be studied using exogenous, such as rings and transmitters, or endogenous markers, such as stable isotopes and trace elements. The use of trace elements has been much less frequently studied compared to stable isotopes. Trace elements can be studied from the feathers of birds and this does not necessarily require trapping of individuals. Here we studied the variation of 18 different trace elements in feathers of two long-distance trans-African migrants, willow warblers Phylloscopus trochilus and barn swallows Hirundo rustica, using body feathers of museum specimens of birds from Finnish breeding grounds. The trace elements were measured using Laser-Ablation Inductively-Coupled-Plasma Mass-Spectrometry. We show that trace element concentrations were relatively stable along the rachis within the same feather except in Ni and S, which showed a quadratic pattern. In general, variation within feathers of the same individuals was smaller than in feathers between individuals for most elements. Furthermore, concentrations of 11 trace elements showed significantly higher concentrations in willow warbler feathers collected in spring than in autumn, moulted in African wintering grounds and European breeding grounds, respectively. Last, concentrations of seven trace elements were significantly higher in the spring feathers of willow warblers compared to barn swallows. This suggests that trace elements could be used to separate moulting grounds of the birds on the larger scale within the same species, but also sampling design should be carefully considered.</p>
Whole rock major, minor, and trace element compositions of basaltic glassy pillow selvages and hyaloclastite from Kverkfjöll, Iceland.
<p>Whole rock compositions of glassy pillow selvages and hyaloclastite (tuff) from the Kverkfjöll region, Iceland, were measured as a part of a master's thesis in geology from the University of Iceland. Major and minor element compositions for the glassy selvages were measured via ICP-OES. Trace element compositions for the glassy selvages and tuff were measured via ICP-MS. Please refer to the actual thesis for more information: Valdimarsdóttir, I. K. (2023). <em>Origin, extent, and emplacement conditions of newly exposed pillow lavas in the Kverkfjöll region, Iceland</em>. [Master's thesis, University of Iceland]. Skemman.</p>
Tracing the introduction of the invasive common myna using population genomics
<p>The common myna (<em>Acridotheres tristis</em>) is one of the most invasive bird species in the world, yet its colonisation history is only partly understood. We identified the introduction history and population structure, and quantified the genetic diversity of myna populations from the native range in India and the introduced populations in New Zealand, Australia, Fiji, Hawaii, and South Africa, based on thousands of single nucleotide polymorphism markers in 814 individuals. We were able to identify the source population of mynas in several invasive locations: mynas from Fiji and Melbourne, Australia, were likely founded by individuals from a subpopulation in Maharashtra, India, while mynas in Hawaii and South Africa were likely independently founded by individuals from other localities in India. Our findings suggest that New Zealand mynas were founded by individuals from Melbourne, which, in turn, were founded by individuals from Maharashtra. We identified two genetic clusters among New Zealand mynas, divided by New Zealand's North Island's axial mountain ranges, confirming previous observations that mountains and thick forests may form barriers to myna dispersal. Our study provides a foundation for other population and invasion genomic studies and provides useful information for the management of this invasive species.</p>
Directed Stepwise Tracing of Polysynaptic Neuronal Circuits With Replication-deficient Pseudorabies Virus
<p>Data for paper: Directed Stepwise Tracing of Polysynaptic Neuronal Circuits With Replication-deficient Pseudorabies Virus.</p> <p>Brain functions are accomplished by polysynaptic circuits formed by neurons wired together through multiple orders of synaptic connections. Polysynaptic connectivity has been difficult to examine due to a lack of methods of continuously tracing the pathways in a controlled manner. Here we demonstrate directed, stepwise retrograde polysynaptic tracing by inducible reconstitution of replication-deficient transneuronal pseudorabies virus (PRV<sup>∆IE</sup>) in the brain. Furthermore, PRV<sup>∆IE</sup> replication can be temporally restricted to minimize its neurotoxicity. With this tool, we delineate a wiring diagram between the hippocampus and striatum-- two major brain systems for learning, memory and navigation--which consist of projections from specific hippocampal domains to specific striatal areas via distinct intermediate brain regions. Therefore, this inducible PRV<sup>∆IE </sup>system provides a tool for dissecting polysynaptic circuits underlying complex brain functions.</p>
Synthetic Power Consumption Traces
<p>Dataset composed of (more than) 10,000 synthetic power consumption traces, used to generate the input dataset for both training and testing the LSTM network. The traces are saved via the <em>NumPy</em> library in a <code>.npz</code> file format: each file contains 500 synthetic power consumption traces.</p>
Traces for studying Datacenter Scheduler Programming Abstractions
<p>Traces for the experiments for the research work that investigates the performance impact of various datacenter scheduler programming abstractions.</p>
Structure-Based Discovery of Mouse Trace Amine-Associated Receptor 5 Antagonists
<p>Topology, parameter and coordinates files of the Molecular dynamics (MD) simulations of mTAAR5 3D models in complex with the three novel antagonists (Compound 9, 10 and 11, Table S4). We used ACEMD3 (v3.5.1) as a molecular engine, CHARMM36 as force field. The three replicas of 200 ns (xtc files) were concatened in a single trajectory for each system. Water molecules, ions, and membrane atoms (POPC: phosphatidylcholine) atoms were removed from the original trajectories and topology before the upload.</p>
JWST NIRSpec/MSA trace libraries and detector models
<p>Reference data needed for forward modelling of NIRSpec MSA data, as described in de Graaff et al. 2023 (https://arxiv.org/abs/2308.09742).<br> <br> This dataset contains a library of traces for each NIRSpec filter/disperser combination, providing a mapping from a microshutter s_{i,j} and wavelength to the position in the detector plane, and includes the rotation angle of the slitlet with respect to the trace in the detector plane.<br> Other files provide information on the detector, such as the pixel size and the kernels used to model the inter-pixel capacitance.</p> <p>These data are designed to be used together with the NIRSpec MSA forward modelling code msafit, which is available publicly on github: https://github.com/annadeg/jwst-msafit</p>
Data from: A review of the glacial environment arthropod trace fossils Umfolozia and Warvichnium with the description of new ichnotaxa
<p><span>Trace fossils are important records of the presence and behaviour of animals in the past, especially in deposits where few body fossils are preserved. They tend to provide the main palaeobiological </span>record for past glacial environments and are thus very important for understanding the ecology of these palaeoenvironments. Two ichnogenera are common from past glacial environments: <em>Umfolozia</em> and <em>Warvichnium</em>. Both <em>Umfolozia</em> and <em>Warvichnium</em> are attributed to arthropods, and the former occurs across the Late Palaeozoic Ice Age (LPIA) and the latter occurs during both the LPIA and the Quaternary glacial event. Here, we review the stratigraphic record, ichnotaxonomy, palaeoecology, palaeoenvironments, and likely tracemakers of these two ichnogenera. In addition to assessing morphological ichnotaxobases, we use multivariate morphometric analysis and inferential statistical tests to support our ichnotaxonomic revisions. The diagnosis of <em>Umfolozia</em> is revised, with the description of a new ichnospecies, <em>Umfolozia</em> <em>terere</em> isp. nov., and the emendation of the previously named <em>Umfolozia</em> <em>riojana</em> (formerly <em>Umfolozia</em> <em>longula</em>) nom. rev. emend. We revised Warvichnium, maintaining the original <em>Warvichnium</em> <em>ulbrichi</em>, and allocating two morphologies to the ichnogenus <em>Irichnus</em>: <em>Irichnus</em> <em>saltatorius</em> and <em>I. paripinnatus</em> isp. nov. These trace fossils record several behaviours, and have implications for palaeoenvironmental interpretations and the evolution of invertebrate ecosystems. Using <em>Umfolozia</em> and <em>Warvichnium</em> as case studies, we demonstrate the application of morphometric analysis in ichnotaxonomy and highlight this as a tool that may be applied to other trace-fossil groups.</p>
Supplementary material for Dynamics of rare earth elements and associated major and trace elements during Douglas-fir (Pseudotsuga menziesii) and European beech (Fagus sylvatica L.) litter degradation
<p>Database and figures related to the results that are presented in the manusciript Montemagno et al. that will be submitted as research paper in the journal Copernicus/Biogeosciences.</p> <p>Title of the submission: Dynamics of Rare Earth Elements and associated major cations during Douglas-fir (Pseudotsuga menziesii) and European beech (Fagus sylvatica L.) litter degradation.</p> <p>Authorship: </p> <p>Alessandro Montemagno<sup>1,3</sup>, Christophe Hissler<sup>1</sup>, Johanna Ziebel<sup>2</sup>, Victor Bense<sup>3</sup>, Laurent Pfister<sup>1</sup>, Adriaan J. Teuling<sup>3</sup></p> <p><sup>1</sup>CATchment and ecohydrology research group (CAT/ENVISION/ERIN), Luxembourg Institute of Science and Technology, Belvaux, 4408, Luxembourg</p> <p><sup>2</sup>Biotechnologies and Environmental Analytics Platform (BEAP/ERIN), Luxembourg Institute of Science and Technology, Belvaux, 4408, Luxembourg</p> <p><sup>3</sup>Department of Environmental Sciences, subdivision Hydrology and Quantitative Water Management (HWQM), Wageningen University and Research, Droevendaalsesteeg 4, Wageningen, 6708 PB, The Netherlands</p> <p><em>Correspondence: </em>Alessandro Montemagno (<a href="mailto:alessandro.montemagno@list.lu">alessandro.montemagno@list.lu</a>), Christophe Hissler (<a href="mailto:christophe.hissler@list.lu">christophe.hissler@list.lu</a>)</p>
A Unified Treatment of Kepler Occurrence to Trace Planet Evolution: Supplemental Data
<p>Here we present supplementary data underlying the paper "A Unified Treatment of Kepler Occurrence to Trace Planet Evolution I: Methodology." Included are:</p> <ul> <li>Planet catalogs; filenames "dr25_X_PCs_B20_ruwe.csv"</li> <li>Completeness contours; filenames "out0819_X_slog_insol__.fits.gz"</li> <li>Observed planet KDEs; filenames "out0827_X_sboot_1000__avg.npy"</li> </ul>
ScienceDex guides
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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.