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1,003 results for “darkness”
Learning to feed in the dark: how light levels influences feeding in the hawkmoth Manduca sexta
<p>Nocturnal insects like moths are essential for pollination, providing resilience to the diurnal pollination networks. Moths use both vision and mechanosensation to locate the nectary opening in the flowers with their proboscis. However, increased light levels due to artificial light at night (ALAN) pose a serious threat to nocturnal insects. Here we examined how light levels influence the efficacy by which the crepuscular hawkmoth Manduca sexta locates the nectary. We used 3D printed artificial flowers fitted with motion sensors in the nectary and machine vision to track the motion of hovering moths under two light levels: 0.1 lux (moonlight) and 50 lux (dawn/dusk). We found that moths in higher light conditions took significantly longer to find the nectary, even with repeated visits to the same flower. In addition to taking longer, moths in higher light conditions hovered further from the flower during feeding. Increased light levels adversely affect learning and motor control in these animals.</p>
UFO model for pseudo-Nambu-Goldstone Dark Matter
<p>pseudo-Nambu-Goldstone (pNG) dark matter in a complex scalar singlet model with a softly broken global U(1) symmetry. Python3 compatible version</p>
Revisiting GeV-scale annihilating dark matter with the AMS-02 positron fraction
<p>We include our dark matter fluxes in their pre-fitted format for the entire set. That is in connection to our paper titled "Revisiting GeV-scale annihilating dark matter with the AMS-02 positron fraction"</p>
Small Dark Rattan Woven Basket
Small Dark Woven Basket 10cm high made from rattan. Basic photogrammetry made from 350 photos extracted from 4k video. Retopologized and texture transferred. Source: Objaverse 1.0 / Sketchfab
Research>Aether Studies>Dark Aether>Dark Aether
Planet: Dark Aether Transdimensional duplicate of planet Aether. Unable to determine origin of Aether's "dark twin". Contains high levels of Phazon ore. Indigenous bioforms attack on sight. Source: Objaverse 1.0 / Sketchfab
Dancers swords dark souls
please rate it and tell me what should I make next please consider to like and follow if so that will be super duper awsome Source: Objaverse 1.0 / Sketchfab
Finotypic plasticity: Predator-induced plasticity in fin size, darkness, and display behaviour in a teleost fish
<p>Fish fins are remarkable devices of propulsion. Fin morphology is intimately linked to locomotor performance, and hence to behaviours that influence fitness, such as foraging and predator avoidance. This foreshadows a connection between fin morphology and variation in predation risk. Yet, whether prey can adjust fin morphology according to changes in perceived risk within their lifetime (a.k.a. predator-induced plasticity) remains elusive. </p> <p>Here, we quantify the structural size of five focal fins in crucian carp (Carassius carassius) following controlled manipulations to perceived predation risk (presence/absence of pike Esox lucius). We also assess if crucian carp respond to increased predation risk by shifts in dorsal fin colouration, and test for differences in how fish actively use their dorsal fins by quantifying the area of the fin displayed in behavioural trials. </p> <p>We find that crucian carp show phenotypic plasticity with regard to fin size as predator-exposed fish consistently have larger fins. Individuals exposed to perceived predation risk also increased dorsal fin darkness and actively displayed a larger area of the fin to potential predators. </p> <p>Our result thus provides compelling evidence for predator-induced fin enlargement, which should result in enhanced escape swimming performance. Moreover, fin-size plasticity may evolve synergistically with fin colouration and display behaviour, and we suggest that the adaptive value of this synergy is to enhance the silhouette of deep-bodied and hard-to-capture prey to deter gape-limited predators prior to an attack. Together, our results provide new perspectives on the role of predation risk for the development and evolution of fins. </p>
Additional raw video and pose estimation data of top view mouse behavior recordings (marble burying test, light-dark box, fear conditioning box) of acute and chronic stress models
<p>This repository contains raw data for 296 different behavioral recordings of mice (marble burying test, light-dark box, fear conditioning box). These include top view raw video .mp4 files (Videos.zip) and the corresponding .csv pose estimation data (data.zip) obtained with DeepLabCut. The data is from multiple different experiments. The METADATA.csv or METADATA.xlsx files contain all grouping variables and help linking the pose estimation files (located in multiple subfolders of /data) to the video files. Visit https://github.com/ETHZ-INS/BehaviorFlow to find out more about how this data has be used by us.</p>
Avantes AvaSpec-2048 dark signal measurements for its modeling with ghost pixels (SN: 1311018U2 and 1411011U2)
<p>Each file contains integration time, temperature, dark signal spectra registered (2048 pixels) and the signal recorded by the 20 ghost pixels (20 pixels). This data have been already resampled with a temperature step of 0.1ºC and the temperature delay have been already corrected for UV13.</p>
Likelihoods for the CTA sensitivity to a dark matter line signal from the Galactic centre (S. Abe et al., 2024])
<p>We present likelihoods to estimate upper limits and detection prospects for monochromatic gamma-ray signals from DM pair-annihilation in the Galactic centre, based on the Cherenkov Telescope Array (CTA) consortium publication "Dark Matter Line Searches with the Cherenkov Telescope Array" by S. Abe et al. [arxiv:<a href="https://arxiv.org/abs/2403.04857" target="_blank" rel="noopener noreferrer">2403.04857</a>]. These likelihoods are based on the analysis benchmark assumptions summarized in Table 3 of that publication. In particular, they assume an Einasto profile for the DM density distribution and 500 hrs of Galactic centre observations. We further supply likelihoods for the same analysis benchmark assumptions, but for an Einasto profile with an inner core of size 1 kpc.</p> <p>As indicated by the filenames, the four files contain likelihoods for setting limits and claiming discovery, respectively. For more technical details, see the headers of these files. </p>
Does Democracy Flourish in the Dark? Regional Development and Democracy Building
<p>The dataset contains only variables (see list below) that the authors are able to share. The rest of variables used in the empirical analysis must be requested or purchased from the Czech Statistical Office (see the paper: https://repec.econ.muni.cz/mub/wpaper/wp/econ/WP_MUNI_ECON_2024-04.pdf).</p> <div> <div>#"MunicipalityID"...Municipality ID</div> <div>#"year"...Year/Election ID</div> <div>#"NoOfVoters"...Number of eligible voters</div> <div>#"ValidVotes"...Number of (valid) cast votes</div> <div>#"ComParty"...Electoral support of the Communist Party</div> <div>#"system"...Electoral support of pro-system parties</div> <div>#"turnout"...Electoral turnout</div> <div>#"incumbent_count"...Votes casted for incumbent(s)</div> <div>#"KSCM_count"...Votes cast for the Communist Party</div> <div>#"system_count"...Votes casted for pro-system parties</div> <div>#"incumbent_L1"...Electoral support of incumbent in previous election</div> <div>#"incumbent_L1_count"...Votes cast for incumbent in the previous election</div> <div>#"MP_k"...MPs from the winning coalition living in the municipality</div> <div>#"MP_o"...MPs from the parliamentary opposition living in the municipality</div> <div>#"NL_mean"...Night-light intensity (mean)</div> <div>#"NL_mean_t1"...Night-light instensity in a previous year</div> <div>#"dist_AT"...distance to the Austrian border</div> <div>#"dist_DEw"...distance to the border of West Germany</div> </div>
Archetype-Based Redshift Estimation for the Dark Energy Spectroscopic Instrument Survey
<p>Supplementary material to DESI's publication "Archetype-Based Redshift Estimation for the Dark Energy Spectroscopic Instrument Survey" by Anand et al. 2024 to comply with the data management plan. The material includes all the data shown in the figures of the results of the paper.</p>
Dark Net Operation Dataset
<p>Dataset from the <strong>Dark Net Operation</strong>, an inquiry of the Brazilian Federal Police which tracked a child-pornography forum in the Tor network. With two phases, the investigation lasted from 2014 to 2016 and resulted in hundreds of search warrants and in almost 70 arrests, with 6 children rescued from abusive situations. On the on-line forum, the users exchanged child abuse media and sexual abuse experiences. The data from the online forum acquired by the Brazilian Federal Police was structured inside 67 categories, containing a total of 9,367 posts and 6,248,719 views made by 9,280 users. Inside the posts, users express their opinion and share CSEM content. The CSEM were often shared as an external link (URLs) to encrypted files containing photos and videos, but sometimes users upload CSEM directly inside their posts. The direct upload of files inside posts summarises 789 CSEM files. Every post, is associated with an identifier, user, category and the date/time when it was posted. Similarly, every view can be mapped to a user, post and the date/time when the post was viewed. </p>
Fig. 3 in A new dark-dotted species of Hypostomus Lacépède (Siluriformes: Loricariidae) from rio Paraguaçu, Bahia State, Brazil
Fig. 3. Distribution of Hypostomus jaguar. White symbol represents the type locality.
Fig. 2 in A new dark-dotted species of Hypostomus Lacépède (Siluriformes: Loricariidae) from rio Paraguaçu, Bahia State, Brazil
Fig. 2. Hypostomus jaguar, paratype, UFBA 6457, 170.2 mm SL. Photographed alive.
Mass spectra for single Scrippsiella trochoidea cells: light vs. dark & replete vs. N limiting conditions
<p>Data files for 77 <em>Scrippsiella trochoidea </em>cells measured in single cell MS experiments. Information about the experimental conditions, corresponding file names, the number of cells for which data are recorded in each respective file, and the range of acquisition times for individual cells can be found in the supplemental documentation of the corresponding manuscript titled : "Single Cell Metabolomic Analysis of <em>Scrippsiella trochoidea</em>" in Frontiers in Plant Science. </p> <p>Note: .mzML is a standard MS file format that can be viewed using freeware such as mMass (<a href="http://www.mmass.org/">http://www.mmass.org/</a>) and ProteoWizard (<a href="http://proteowizard.sourceforge.net/index.shtml">http://proteowizard.sourceforge.net/index.shtml</a>).</p> <p> </p> <p> </p> <p> </p>
Supplementary Data: Global analyses of Higgs portal singlet dark matter models using GAMBIT
<p>The files in this record contain data for the effective Higgs portal dark matter models considered in the <a href="http://gambit.hepforge.org/">GAMBIT</a> "Higgs portal" paper.</p>
Combined dark image, 300 sec exposure time from the Palomar LFC Chip 0
<p>This is a combination of three calibrated dark frames from the data set at http://doi.org/10.5281/zenodo.3254683 </p> <p>Those images were taken by Erik Tollerud</p>
Supplementary information to "Rainbow in the dark. The identification of diagnostic projectile impact features on rock crystal"
<p>Images of the experimental projectiles (pre-hafting, hafted before and after shooting), Hirox (Low magnification) pictures of pre-hafting and post-shooting projectiles and selection of fractures smoked with magnesium.</p>
Scattering of dark pions in Sp(4) gauge theory - Data release
<p>This release contains all data and metadata used to prepare the publication <a href="https://arxiv.org/abs/2405.06506"><em>Scattering of dark pions in Sp(4) gauge theory [2405.06506]</em></a><br>Further details are given in the file README.md.</p> <p>YD and FZ have been supported the Austrian Science Fund research teams grant STRONG-DM (FG1). FZ has been supported by the STFC Grant No. ST/X000648/1. The computations have been performed on the Vienna Scientific Cluster (VSC4).</p>
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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.