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2,281 results for “laboratories”
FIGURE 1 in Description of the first five larval stages of Plesionika narval (Fabricius, 1787) (Crustacea, Decapoda, Pandalidae) obtained under laboratory conditions
FIGURE 1. Plesionika narval, lateral view: A, zoea I; B, zoea II; C, zoea III; D, zoea IV; E, zoea V. Scale bar: 500 µm.
Fig. 1 in Sheep Dung Removal by Coexisting Rainbow Scarabs (Coleoptera: Scarabaeidae: Phanaeus MacLeay) under Experimental Laboratory Conditions
Fig. 1. Experimental setup. In Treatment 1 (T1) a pair of Phanaeus quadridens was placed; in T2 a pair of P. adonis was placed; in T3 six females of P. quadridens were placed; in T4 six females (two of P. adonis, two of P. palliatus, and two of P. quadridens) were placed. The bars on the graph represent mean values of dung removal; error lines are SD of the amount of sheep dung removed per individual in each treatment.
Fig. 2 in Sheep Dung Removal by Coexisting Rainbow Scarabs (Coleoptera: Scarabaeidae: Phanaeus MacLeay) under Experimental Laboratory Conditions
Fig. 2. Mean (± SD) of the amount (g) of sheep dung removed at 24 and 48 h after deposition by dung beetles in four treatments. Treatments as in Fig. 1. The asterisks indicate statistical differences (p <0.05) among the two periods of the same treatment in paired t tests.
Fig. 2 in Dung Removal by Dichotomius (Luederwaldtinia) Sericeus (Harold, 1867) (Coleoptera: Scarabaeidae: Scarabaeinae) in a Laboratory Setting, with Behavioral Notes
Fig. 2. Records of gallery formation in the soil by Dichotomius sericeus in a laboratory setting. a) Mean number of galleries, b) Mean diameter of galleries. Dispersion measure is standard error. Different letters above error bars identify significant differences for pairwise comparisons. EU = experimental unit.
Fig. 1 in Dung Removal by Dichotomius (Luederwaldtinia) Sericeus (Harold, 1867) (Coleoptera: Scarabaeidae: Scarabaeinae) in a Laboratory Setting, with Behavioral Notes
Fig. 1. Mean bovine manure removal by Dichotomius sericeus under laboratory conditions. Dispersion measure is standard error. Different letters above the error bars identify significant differences for pairwise comparisons. EU = experimental unit.
Fig. 1 in A Method for Rearing the Rice Water Weevil, Lissorhoptrus oryzophilus (Coleoptera: Curculionidae), in the Laboratory
Fig. 1. Specially-constructed container for rearing larvae of the rice water weevil, Lissorhoptrus oryzophilus, in water in the laboratory. A) Schematic diagram of the container. a. Plastic ring; b. Nylon net (18 holes / inch); c. Rice seedlings; d. Stone grains (dia. 2–3 mm); e. Layer of rice roots, in which larvae live; f. water with 0.1% or 0.05% nutrient solution: g. Square plastic container (w.: 95 mm, h.: 70 mm); B) devices for rearing larvae of the rice water weevil in water.
Experimental evolution reveals sex-specific dominance for surviving bacterial infection in laboratory populations of Drosophila melanogaster
<p>Males and females are subjected to distinct kinds of selection pressures, often leading to the evolution of sex-specific genetic architecture, an example being sex-specific dominance. Sex-specific dominance reversals (SSDRs), where alleles at sexually antagonistic loci are at least partially dominant in the sex they benefit, have been documented in Atlantic salmon, rainbow trout and beetles. Another interesting feature of many sexually reproducing organisms is the asymmetric inheritance pattern of X chromosomes, which often leads to distinct evolutionary outcomes on X chromosomes compared to autosomes. Examples include, the higher efficacy of sexually concordant selection on X chromosomes, and X chromosomes being more conducive to the maintenance of sexually antagonistic polymorphisms under certain conditions. Immunocompetence is a trait that has been extensively investigated for sexual dimorphism with growing evidence for sex-specific or sexually antagonistic variation. X chromosomes have been shown to harbour substantial immunity-related genetic variation in the fruit-fly, <i>Drosophila melanogaster</i>. Here, using interpopulation crosses and cytogenetic cloning, we investigated sex-specific dominance and the role of the X chromosome in improved post-infection survivorship of laboratory populations of <i>D. melanogaster</i> selected against pathogenic challenge by <i>Pseudomonas entomophila</i>. We could not detect any contribution of the X chromosome to the evolved immunocompetence of our selected populations as well as to within population variation in immunocompetence. However, we found strong evidence of sex-specific dominance related to surviving bacterial infection. Our results indicate that alleles that confer a survival advantage to the selected populations are, on average, partially dominant in females but partially recessive in males. This could also imply a sex-specific dominance reversal for overall fitness, given the putative evidence for sexually antagonistic selection affecting immunocompetence in <i>Drosophila melanogaster</i>. We also highlight sex-specific dominance as a potential mechanism of sex differences in immunocompetence, with population-level sex differences primarily driven by sex differences in heterozygotes.</p>
Data for Laboratory Observations of Electron Heating and non-Maxwellian Distributions at the Kinetic Scale During Electron-Only Magnetic Reconnection
<p>Simulation data as appearing in the Supplementary of the paper titled "Laboratory Observations of Electron Heating and non-Maxwellian Distributions at the Kinetic1Scale During Electron-Only Magnetic Reconnection".</p>
Demographic data, disease characteristics, and laboratory findings for Association between polymorphisms within gene coding for tumor necrosis factor (TNF)-alpha with outcomes of treatment in sample of Iraqi patients with Ankylosing Spondylitis taking Etanercept
<p>Demographic data, disease characteristics, and laboratory findings for Association between polymorphisms within gene coding for tumor necrosis factor (TNF)-alpha with outcomes of treatment in sample of Iraqi patients with Ankylosing Spondylitis taking Etanercept</p>
Dataset for "Co-alignment of Laboratory and In-Situ Reflectance Spectra of Chang'e-5 Lunar Soil"
<p>This dataset provides the reflectance data measured in the laboratory for the <45-μm, 45-355-μm fractions, and bulk soil sample, respectively.</p>
Example Dataset from BioMAX, MAX IV Laboratory
<p>Dataset collected at BioMAX beamline, MAX IV Labortory, Sweden, of thaumatin. Data collection parameters:</p> <ul> <li>Data collected: 30 November 2022</li> <li>Wavelength: 0.9763 Å (12.7 keV)</li> <li>Beamline: BioMAX, MAX IV Laboratory</li> <li>Detector: DECTRIS EIGER 16M</li> <li>File format: HDF5 in EIGER Nexus format</li> <li>Number of frames: 1800</li> <li>Oscillation per frame: 0.1°, 180° total</li> <li>Resolution at detector corners: 2 Å</li> <li>Estimated flux: 1.68e11 ph/s</li> </ul> <p>Beamline parameters:</p> <table> <tbody> <tr> <td><strong>Synchrotron Name</strong></td> <td>MAX IV</td> <td><strong>Focusing Optics</strong></td> <td>K-B Mirror</td> <td><strong>Detector Type</strong></td> <td> <p>Hybrid Pixel Counting Detector</p> <p> </p> </td> </tr> <tr> <td><strong>Beamline name</strong></td> <td>BioMAX</td> <td><strong>Monochromator<br> Type</strong></td> <td>Si(111)</td> <td><strong>Detector Model </strong></td> <td>EIGER 16M</td> </tr> <tr> <td><strong>Synchrotron Current</strong></td> <td>297.0 mA</td> <td><strong>Beam Shape</strong></td> <td>ellipse</td> <td><strong>Detector Manufacturer</strong></td> <td>DECTRIS</td> </tr> <tr> <td><strong>Undulator type</strong></td> <td> </td> <td><strong>Beam size at sample Horiz/vert (µm)</strong></td> <td>50/50</td> <td><strong>Detector pixel size (um)</strong></td> <td>75</td> </tr> <tr> <td><strong>Undulator gap</strong></td> <td>5.04 mm</td> <td><strong>Beam divergence<br> Horiz/vert (µrad)</strong></td> <td>6/104</td> <td><strong>Beam polarization</strong></td> <td>0.99</td> </tr> </tbody> </table> <p>Crystals of thaumatin were grown from solutions of thaumatin (20-50 mg/mL) in NaK-tartrate (1.0 M), HEPES pH 7 (100 µM), and 25% glycerol.</p>
M180 Data for "Laboratory Earthquakes Simulations – Typical Events, Fault Damage, and Gouge Production"
<p>M180 Data for "Laboratory Earthquakes Simulations – Typical Events, Fault Damage, and Gouge Production"</p>
Maker Laboratories in the metropolitan areas of Barcelona and Milan
<p>Dataset of the Maker Laboratories in the metropolitan areas of Barcelona and Milan.</p> <p> </p> <p>The research behind this dataset has taken place at the Politecnico di Milano during Massimo Menichinelli's stay as Senior Resident Researcher from 01/02/2021 to 08/01/2022.</p>
A cryopreservation method to recover laboratory- and field-derived bacterial communities from mosquito larval habitats
<p>Mosquitoes develop in a wide range of aquatic habitats containing highly diverse and variable bacterial communities that shape both larval and adult traits, including the capacity of adult females of some mosquito species to vector disease-causing organisms to humans. However, while most mosquito studies control for host genotype and environmental conditions, the impact of microbiota variation on phenotypic outcomes of mosquitoes is often unaccounted for. The inability to conduct reproducible intra- and inter-laboratory studies of mosquito-microbiota interactions has also greatly limited our ability to identify microbial targets for mosquito-borne disease control. Here, we developed an approach to isolate and cryopreserve bacterial communities derived from lab- and field-based larval-rearing environments of the yellow fever mosquito <em>Aedes</em> <em>aegypti</em>–a primary vector of dengue, Zika, and chikungunya viruses. We then validated the use of our approach to generate experimental microcosms colonized by standardized lab- and field-derived bacterial communities. <span>Our results overall reveal minimal effects of cryopreservation on the recovery of both lab- and field-derived bacteria when directly compared with isolation from non-cryopreserved fresh material. Our results also reveal improved reproducibility of bacterial communities in replicate microcosms generated using cryopreserved stocks over fresh material. Communities in replicate microcosms further captured the majority of total bacterial diversity present in both lab- and field-based larval environments, although the relative richness of recovered taxa as compared to non-recovered taxa was substantially lower in microcosms containing field-derived bacteria. Altogether, these results provide a critical next step toward the standardization of mosquito studies to include larval-rearing environments colonized by defined microbial communities. They also lay the foundation for long-term studies of mosquito-microbe interactions and the identification and manipulation of taxa with potential to reduce mosquito vectorial capacity.</span></p>
Laboratory luminous efficiency results: iron and aluminum
<p>This includes data presented in the paper "Experimentally derived luminous efficiencies for aluminum and iron at meteoric speeds", submitted to Geophysical Research Letters, as well as code to reproduce results plots. The contents include:</p> <ul> <li> <p>al/fe_data: results from the aluminum and iron campaigns</p> <ul> <li> <p>columns: particle velocity (m/s), particle mass (kg), luminous efficiency (unitless), luminous efficiency uncertainty (unitless)</p> </li> </ul> </li> <li> <p>fe/al_fit.mat and fe/al_fit_gof.mat: output and goodness of fit statistics from fitting a rational function to the datasets</p> </li> <li> <p>paper_plots.m: basic plotting routines for the data and fits</p> </li> </ul>
Replication package for: Beyond Dividing the Pie: Multi-Issue Bargaining in the Laboratory
<p>Replication package for the article Bochet, Olivier, Manshu Khanna, Simon Siegenthaler (2023), Beyond Dividing the Pie: Multi-Issue Bargaining in the Laboratory. The Review of Economic Studies.</p> <p>The replication package contains the data and software code to replicate the statistical analysis, tables, and figures published in the article and the online appendix. It only contains the experimental instructions.</p>
On the Space Leader Evolution During the Breakthrough Phase of Attachment Process in Positive Laboratory Sparks
<p>The data supports the manuscript entitled "On the Space Leader Evolution During the Breakthrough Phase of Attachment Process in Positive Laboratory Sparks." The "Data 1" group contains the discharge current waveform, the normalized gray value, and the synchronized voltage-current-impedance waveform. The files in "Data 1" group can be opened by Excel. The "Data 2" group includes high-speed video frames for five discharge events and they can be opened by Phantom Camera Control (PCC) software. The data can be used freely for scientific purposes with appropriate citation.</p>
Numerical results data of 'Impact of Injection Pressure and Polyaxial Stress on Hydraulic Fracture Propagation and Permeability Evolution in Greywacke: Insights from Discrete Element Models of a Laboratory Test'
<p>Numerical results data of '<strong>Impact of Injection Pressure and Polyaxial Stress on Hydraulic Fracture Propagation and Permeability Evolution in Greywacke: Insights from Discrete Element Models of a Laboratory Test</strong>'</p>
Brief Communication: Monitoring active layer dynamic using a lightweight nimble Ground-Penetrating Radar system. A laboratory analog test case
<p>GPR dataset from Leger et al., 2023 (https://tc.copernicus.org/preprints/tc-2022-214/)</p> <p> </p>
Laboratory investigation of hydrodynamic and sand dune morphology changes under wave overwash (Version 1)
<p>Lab datasets of the experiment</p>
ScienceDex guides
Understand access before you commit
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.