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2,281 results for “laboratories”
LiMeS-lab: An integrated laboratory for the development of Liquid-Metal Shield technologies for fusion reactors
<p>The liquid metal shield laboratory (LiMeS-Lab) will provide the infrastructure to develop, test, and compare liquid metal divertor designs for future fusion reactors. The main research topics of LiMeS-lab will be liquid metal interactions with the substrate material of the divertor, the continuous circulation and capillary refilling of the liquid metal during intense plasma heat loading and the retention of plasma particles in the liquid metal. To facilitate the research, four new devices are in development at the Dutch Institute for Fundamental Energy Research and the Eindhoven University of Technology: LiMeS-AM: a custom metal 3D printer based on powder bed fusion; LiMeS-Wetting, a plasma device to study the wetting of liquid metals on various substrates with different surface treatments; LiMeS-PSI, a linear plasma generator specifically adapted to operate continuous liquid metal loops. Special diagnostic protection will also be implemented to perform measurements in long duration shots without being affected by the liquid metal vapor; LiMeS-TDS, a thermal desorption spectroscopy system to characterize deuterium retention in a metal vapor environment. Each of these devices has specific challenges due to the presence and deposition of metal vapors that need to be addressed in order to function. In this paper, an overview of LiMeS-Lab will be given and the conceptual designs of the last three devices will be presented.</p>
An Empirical Study to Evaluate the Impact of Mindfulness at a Software Company (Laboratory Package)
<p>For the empirical study carried out in an Andalusian software company to evaluate the effects of the practise of mindfulness, this laboratory package contains the experimental material used during its execution, the data sets (both "csv" and "sav" files) derived from the experimental tasks, and the results of the statistical analysis (both scripts and plots).</p>
Muon Scattering Radiography (MSR) measurements on blocks of ice in laboratory, and on simulated snowpack
<p>Experimental setup (scenario 5):</p> <p>Muon data used in this work has been collected with our muon detection system. This muon monitoring system is currently in use for both scientific and industrial purposes <a href="https://www.zotero.org/google-docs/?broken=RG5rWA">(Martínez-Ruiz del Árbol et al., 2022)</a>. The particle detectors are composed of four Multi-Wire Proportional Chambers (MWPC) and each chamber has two layers with 224 detection wires, all of them separated by 4 mm. The two layers form a two-dimensional grid of wires which covers an area of 89.6 x 89.6 cm and detects the positions where muons cross it.</p> <p>When a muon event is identified, our system detects four points located in the horizontal two-dimensional grids, two points before the particle goes through the target and another two points after the particle traverses it. With this data, way-in and way-out trajectories can be reconstructed, and muon deviations calculated. Specifically, in the numerical analysis of this work, we utilised the projection of muon deviations in two planes perpendicular to the detection wires.</p> <p>Simulation setup (scenarios 1 to 4):</p> <p>The snowpack was simulated using a one-dimensional snow model forced by surface meteorological data. We have used the SNOWPACK model <a href="https://www.zotero.org/google-docs/?EqYNAT">(Bartelt & Lehning, 2002</a><a href="https://www.zotero.org/google-docs/?LUKxAu">)</a> to realistically simulate the behaviour of the snowpack along two seasons, 2015/2016 (1_Modelling) and 2016/2017 (2_Testing). SNOWPACK was forced by the ERA5-Land surface reanalysis <a href="https://www.zotero.org/google-docs/?QCLBxK">(Muñoz-Sabater et al., 2021)</a>. The simulations were performed in the Pyrenees, using the ERA5-Land cell whose centroid falls closer to the Monte Perdido massif (42.7°N, -0.1°E), at an elevation of 2041m asl.</p> <p>We coupled the SNOWPACK simulations with a full MSR simulation setup that uses the Cosmic RaY generator <a href="https://www.zotero.org/google-docs/?oSIPTu">(Hagmann et al., 2012)</a> to reproduce the atmosphere muon flux and GEANT4 <a href="https://www.zotero.org/google-docs/?3ZDRDN">(Agostinelli et al., 2003)</a> to simulate the muon scattering caused by the snowpack. GEANT4 is a state-of-the-art software designed and maintained at CERN to simulate the interactions of particles and matter in high-energy and nuclear physics. Our simulation framework contains a model of our experimental setup including the muon detectors and their response. This framework has been successfully applied to multiple industrial problems, for instance, to steel-made pipe wear <a href="https://www.zotero.org/google-docs/?F8nYbS">(Martínez-Ruiz del Árbol et al., 2018)</a>. Similar simulation frameworks are typically used to research applications of muography <a href="https://www.zotero.org/google-docs/?115QeU">(Mori et al., 2017)</a>.</p> <p>We expanded the one-dimensional snowpack geometry to a 1m² snow column, assuming homogeneous snow layers in the longitude and latitude dimensions. Then, we propagated and measured muons penetrating the whole snow column, virtually reproducing the detection process using GEANT4. We collected muon deviations and their Root-mean-square (RMS) value for different accumulations of snow during the two simulated seasons.</p>
Alelaimat Chemistry Laboratory
<p>This is my own trademark for my organization Alelaimat Chemistry Laboratory.</p>
Flow velocity measurements over a migrating train of dunes in a flume in the laboratory
<p>Acoustic Doppler Velocimeter (ADV) measurements conducted over a migrating train of dunes in a flume in the laboratory. The files with an .ntk extension are the raw data as measured and recorded by the instrument (Nortek Vectrino Profiler) and those with an extension .mat are the raw data as exported from the original software into a MatLab readable file format. <br> The data was used to create a streamwise flow velocity profile in the publication associated with this dataset. <br> File names have a nominal distance to the bed in mm expressed by the numbers at the end of the name. For example, 00_10 indicates measurements from 0 to 10 mm. However, as the measurements were conducted over a migrating train of dunes, those numbers are not as precise. However, the instrument records the distance to the bed and it is available inside the files. The distance inside the files is the one used to create the figure for the publication. <br> <br> In the upcoming publication the data was used to plot figure 4(d)<br> <br> The figure is available as 4D in the preprint found in this link: https://www.researchsquare.com/article/rs-1370465/v1</p> <p> </p>
Data Availibility for "Susceptibility of microseismic triggering to small sinusoidal stress perturbations at the laboratory scale"
<p>List of data contained within this repository.</p> <p>Total weight = ~ 40GB</p> <p>--- Raw data :</p> <p> </p> <p>-For all experiments (control and oscillation experiments):</p> <p>Mechanical data files (460 MB);<br> Acoustic emission waveforms (40 GB).</p> <p>--- Derived data:</p> <p> </p> <p>-For the control experiment:</p> <p>RSFit3000 Rate and State parameters (30 MB);</p> <p> </p> <p>-For oscillation experiments:</p> <p>RMS magnitudes of acoustic emissions ; (1 MB)<br> Phase of arrival of acoustic emissions (500 KB);<br> Response amplitudes of fused and unfused steps (1 KB);<br> Susceptibility to Pc oscillation amplitude (1 KB);<br> b-values as a function of stress oscillation phase (100 KB).</p>
A laboratory-scale simulation framework for analyzing wildfire hydrologic and water quality effects
<p>Datasets containing information on experimental conditions for each tested soil sample, measured hydrologic and water quality responses, and calculated response metrics.</p>
Lateral flow immunoassay-based laboratory algorithm for rapid diagnosis of diphtheria
<p><strong>Results of the ‘DIFTERIA’ Lateral Flow Immunoassay (LFIA) validation</strong></p>
Chemistry Laboratory Apparatus Dataset
<p>A high quality benchmark dataset of chemical laboratory instruments. Overall, the CALD dataset includes 21 different types of images of chemical laboratory instruments, with no less than 200 images of each type, mainly glass instruments.CALD includes the following 21 types of chemical laboratory instruments: Type-1: alcohol lamp, Type-2: beaker, Type-3: flask, Type-4: three-neck flask, Type-5: conical flask, Type-6 Crucible, Type-7: evaporating dish, Type-8: filtering flask, Type-9: funnel, Type-10: glass rod, Type-11: measuring cylinder, Type-12: dropper, Type-13: medicine spoon, Type-14: mortar and pestle, Type-15: plastic cleaning bottle, Type-16: rubber suction ball, Type-17: dispensing funnel, Type-18: test tube, Type-19: test tube brush, Type-20: volumetric flask, Type-21: wide-mouth flask. All images of chemistry lab instruments are carefully labeled with information by chemistry students. Each image contains one or more images of chemical laboratory instruments, and the number of chemical laboratory instruments on each image is variable, usually multiple.</p>
Laboratory video of Deepstaria enigmatica specimen HD98SS1 (DLSI014)
<p>Video (HDCAM, original ProRes422 codec transcoded to H264 codec) of <em>Deepstaria enigmatica</em> specimen HD98SS1, captured by the ROV <em>Hyper-Dolphin</em> during Dive 98 on 22 April 2002 at a depth of 669 m (temperature 2.9˚C, salinity 34.14, dissolved oxygen 1.2 ml/L, Sigma T 27.20) over the Japan Trench (41˚00’N 144˚41’E) during a cruise by the R/V <em>Kaiyo</em> (KY02-06) off the Sanriku coast, east of the main island of Japan. Camera by Jun Tanada.</p>
Absolute Gravity Measurements in the Mass Laboratory of ILNAS in Capellen, Luxembourg
<p>This report contains the results of absolute gravity measurements carried out in the Mass Laboratory of ILNAS in Capellen, Luxembourg. The measurements took place on the floor tile next to the pillar where the mass comparators are installed. The absolute gravimeter FG5X#216 was operated by Olivier Francis from the Geophysics Laboratory of the University of Luxembourg which is also a Designated Institute (DI) for gravity by the Bureau Luxembourgeois de Métrologie (BLM).</p>
Movies, temperature and pressure measurements associated with the study "Volumetric changes of mud on Mars: evidence from laboratory simulations"
<p>Movies, temperature and pressure measurements logs associated with the study "Volumetric changes of mud on Mars: evidence from laboratory simulations" that are showing behavior of muds with different viscosities.</p>
ENDGAME - Laboratory Experiment 2022-12-01 Exp. 001 - Part 3 - High Speed Camera data
<p>Preliminary test with high speed camera and Schlieren shadow photography.</p> <p>Images of the injection of air bubbles in a 2D setup obtained using 2 parallel Plexiglas sheets (10 mm thickness) separated by rubber seals and filled with a distilled water. The gap between the two parallel sheets is 3 mm. Air was injected manually into the 2D setup through a capillary tube (~2 mm diam). Frame rate of the high speed camera is 250 fps. The spherical mirror used for the Schlieren setup was 75 mm wide with a 750 mm focal length.</p>
Creep and Shrinkage Database of Laboratory Data
<p>Creep and shrinkage database of laboratory tests, covering mostly concrete and also mortars and pastes. The database was revamped from Northwestern University database and RILEM database, originating back to 1978. Published in MySQL and xlsx formats with a brief manual.</p>
A multi-laboratory preclinical trial to assess treatment candidates for acute ischemic stroke
<p>Human diseases may be modeled in animals to allow preclinical assessment of putative new clinical interventions. Recent, highly publicized failures of large clinical trials called into question the rigor, design, and value of preclinical assessment. We established the Stroke Preclinical Assessment Network (SPAN) to design and implement a randomized, controlled, blinded, multi-laboratory network for the rigorous assessment of candidate stroke treatments combined with intravascular thrombectomy. Futility boundaries in a Multi-Arm Multi-Stage statistical design aimed to exclude less effective interventions, and efficacy boundaries allowed early declaration of success after each of four sequential stages. Six independent research laboratories performed a standard focal cerebral ischemic insult in five animal models that included equal numbers of males and females: young mice, young rats, aging mice, mice with diet-induced obesity, and spontaneously hypertensive rats. The laboratories adhered to a common protocol and efficiently enrolled 2,615 animals with full data completion and comprehensive animal tracking. SPAN successfully implemented treatment masking, randomization, pre-randomization inclusion and exclusion criteria, and blinded assessment of outcomes. <a>The</a> SPAN design and infrastructure provide an effective approach that could be used in similar preclinical, multi-laboratory studies in other disease areas, and should help improve reproducibility in translational science.</p>
Data accompanying the publication: Measurements and modelling of pore-pressure gradients in the swash zone under large-scale laboratory bichromatic waves
<p>Data accompanying the publication: Measurements and modelling of pore-pressure gradients in the swash zone under large-scale laboratory bichromatic waves. See the README.txt file for more detail.</p>
Contrasting laboratory and field outcomes of bat–moth interactions
<p>Predator–prey interactions are important but difficult to study in the field. Therefore, laboratory studies are often used to examine the outcomes of predator–prey interactions. Previous laboratory studies have shown that moth hearing and ultrasound production can help prey avoid being eaten by bats. We report here that laboratory behavioral outcomes may not accurately reflect the outcomes of field bat–moth interactions. We tested the success rates of two bat species capturing moths with distinct anti-bat tactics using behavioral experiments. We compared the results with the dietary composition of field bats using next‐generation DNA sequencing. <em>Rhinolophus episcopus </em>and <em>Rhinolophus</em> <em>osgoodi</em> had a lower rate of capture success when hunting for moths that produce anti-bat clicks than for silent eared moths and earless moths. Unexpectedly, the success rates of the bats capturing silent eared moths and earless moths did not differ significantly from each other. However, the field bats had a higher proportion of silent eared moths than that of earless moths and that of clicking moths in their diets. The difference between the proportions of silent eared moths and earless moths in the bat diets can be explained by the difference between their abundance in bat foraging habitats. These findings suggest that moth defensive tactics, bat countertactics, and moth availability collectively shape the diets of insectivorous bats. This study illustrates the importance of using a combination of behavioral experiments and molecular genetic techniques to reveal the complex interactions between predators and prey in nature.</p>
Dataset for triaxial monotonic and cyclic laboratory tests on sand HN31 with fines performed at Ecole des Ponts ParisTech/Navier laboratory
<p>Data from monotonic and triaxial tests obtained during the thesis :</p> <p>ZHU, Zhehao. Influence of fine particles on the liquefaction properties of a reference sand. Application to the seismic response of a sand column on a vibrating table, PhD thesis, Ecole des Ponts Paristech, 2022</p> <p>https://pastel.hal.science/tel-03968096</p>
Dataset for triaxial cyclic laboratory tests of cemented sand HN31
<p>Data from triaxial cyclic test with cemented samples performed by Université Gustave Eiffel and Solétanche Bachy</p>
Data for Technical note: Darkroom lighting for luminescence dating laboratory
<p>An optimal lighting setting for the darkroom laboratory is fundamental for the accuracy of luminescence dating results. Here, we present the lighting setting implemented in the new Luminescence Dating Research Laboratory at Stony Brook University, USA. In this study, we performed spectral measurements on different light sources and filters. Then, we measured the optically stimulated luminescence (OSL) signal of quartz and the infrared stimulated luminescence (IRSL) at 50 °C (IR50) as well as post-IR IRSL at 290 °C (pIRIR290) signal of potassium (K)-rich feldspar samples exposed to various light sources and durations.</p> <p>Our ambient lighting is provided by ceiling fixtures, each equipped with a single orange light-emitted diode (LED). In addition, our task-oriented lighting, mounted below each wall-mounted cabinet and inside the fume hoods, is equipped with a dimmable orange LED stripline.</p> <p>The ambient lighting, delivering 0.4 lux at the sample position, induced a loss of less than 5 % (on average) in the quartz OSL dose after 24 h of exposure, and up to 5 % (on average) in the IR50 dose for the K-rich feldspar samples, with no measurable effect on their pIRIR290 dose. The fume hood lighting, delivering 1.1 lux at the sample position, induced a dose loss of less than 5 % in quartz OSL and K-rich feldspar IR50 doses after 24 h of exposure, with no measurable effect on their pIRIR290 dose. As light exposure during sample preparation is usually less than 24 h, we conclude that our lighting setting is suitable for luminescence dating darkrooms, it is simple, inexpensive to build, and durable.</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.