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2,225 results for “reversal”
Toward consumer-centric sustainability development model: A reverse logistics multi-criteria decision-making analysis datasets
<p>Toward consumer-centric sustainability development model: A reverse logistics multi-criteria decision-making analysis datasets</p>
Data from: Reversal of the adipostat control of torpor during migration in hummingbirds
<p>Many small endotherms use torpor to reduce metabolic rate and manage daily energy balance. However, the physiological "rules" that govern torpor use are unclear. We tracked torpor use and body composition in ruby-throated hummingbirds (<i>Archilochus colubris</i>), a long-distance migrant, throughout the summer using respirometry and quantitative magnetic resonance. During the mid-summer, birds entered torpor at consistently low fat stores (~5% of body mass), and torpor duration was negatively related to evening fat load. Remarkably, this energy-emergency strategy was abandoned in the late summer when birds accumulated fat for migration. Migrating birds were more likely to enter torpor on nights when they had higher fat stores, and fat gain was positively correlated with the amount of torpor used. These findings demonstrate the versatility of torpor throughout the annual cycle and suggest a fundamental change in physiological feedback between adiposity and torpor during migration. Moreover, this study highlights the underappreciated importance of facultative heterothermy in migratory ecology.</p>
Fully reversible magnetoelectric voltage controlled THz polarization rotation in magnetostrictive spintronic emitters on PMN-PT
<p>The files include experimental data to demonstrate magneto-electric control of terahertz polarization of spintronic emitters. The files called "Vertical E-field amplitude" and "Horizontal E-field amplitude" describe the terahertz wave rotation for orthogonal polarizations measured for different values of applied voltage. The files "E-field peak rotation" show the control of polarization at the peak of the terahertz signal and differs by magnetic field bias (A/m). The measurement of the strain creating the magnetoelestic anisotropy can be found in the file "pmn-pt-strain". Files "Hysteresis - STEmulti-PMN-PT" contain magneto-hysteresis loops for easy (EA) and hard axis (HA).</p>
Kerr reversal in Josephson meta-material and traveling wave parametric amplification datasets
<p>This repository contains raw data for results presented in article "Kerr reversal in Josephson meta-material and traveling wave parametric amplification" (Preprint : arXiv:2101.05815). All data is stored in numpy(numpy.org) array format.</p> <p><strong>Please site any usage to original publication.</strong></p> <p><br> # Gain data</p> <p> The data used for generating Fig. 3(a) of main text:<br> <br> - Gain_6_freq contains frequency axis, gain_6 contains corresponding gain data when the device is pumped at 6 GHz<br> <br> - Gain_8_freq contains frequency axis, gain_8 contains corresponding gain data when the device is pumped at 8 GHz<br> <br> - Gain_10_freq contains frequency axis, gain_10 contains corresponding gain data when the device is pumped at 10 GHz</p> <p><br> # Saturation data</p> <p> The data used for generating Fig. 3(d) of main text:</p> <p> - saturation_6_pow contains input signal power at 6.05 GHz and saturation_6_gain contains gain as a function of the same when device is pumped at 8 GHz.</p> <p> - saturation_9.5_pow contains input signal power at 9.5 GHz and saturation_9.5_gain contains gain as a function of the same when device is pumped at 8 GHz.</p> <p><br> # Noise data</p> <p> The raw data used for fitting noise performance of the TWPA as depicted in Fig. 4 of main text:</p> <p> - noise_without_TWPA_temperature : contains noise temperature of the amplification chain without TWPA, in<br> Kelvin.<br> - noise_without_TWPA_sys_gain_dB : contains gain of the amplification chain without TWPA, in dB.</p> <p> - noise_freq : contains frequency axis for the measured PSD.</p> <p> - noise_thermal_source_temperature : contains temperature data of the thermal noise source.</p> <p> - noise_with_TWPA_PSD_vs_thermal_source_temperature : contains PSD measured with 200 MHz RBW as a function<br> of frequency and temperature of thermal noise source.</p> <p><br> # Transmission data</p> <p> Normalized transmission through the device.</p> <p> - transmission_flux : contains quantized flux axis for the measured transmission.</p> <p> - transmission_freq : contains frequency axis for the measured transmission.</p> <p> - transmission : contains transmission as a function of frequency and quantized flux, in dB.</p> <p><br> # Dispersion data</p> <p> Dispersion through the device.</p> <p> - dispersion_freq : contains frequency axis for the measured dispersion.</p> <p> - dispersion_phase_PCB : contains phase accumulation when RF switch is in PCB position as a function of<br> frequency, in radians.<br> - dispersion_flux_mA : contains flux axis for the measured dispersion, in mA.</p> <p> - dispersion_phase_device : contains phase accumulation when RF switch is in device position as a function<br> of frequency and flux, in radians.</p>
Data published in manuscript "Effects of reversal of water flow in an Arctic floodplain river on fluvial emissions of CO2 and CH4" by Castro-Morales et al.
<p>This data is published in the manuscript<strong>:</strong></p> <p>Castro-Morales, K., Canning, A., Körtzinger, A., Göckede, M., Küsel, K., et al. (2022). Effects of reversal of water flow in an Arctic floodplain river on fluvial emissions of CO<sub>2</sub> and CH<sub>4</sub>. <em>Journal of Geophysical Research: Biogeosciences</em>, 127, e2021JG006485. <a href="https://doi.org/10.1029/2021JG006485">https://doi.org/10.1029/2021JG006485</a>.</p> <p>The data contains the water properties and gases data measured at a site in Ambolikha River, meteorological data measured at an eddy covariance tower located in the neighbor floodplain, and data from the analysis of dissolved organic matter in river water samples. The data was collected between 26 June, 2019 and 02 August, 2019.<strong> </strong></p> <p>This folder contains four data files and the file "README_Data_access_Castro-Morales_etal_Ambolikha_River.txt" should be read before accessing the data. The authors recommend downloading Version 2.0 because it is the most up to date data.</p> <p>For questions contact the main and corresponding author Dr. Karel Castro-Morales at: karel.castro.morales@uni-jena.de</p>
Terminal density reversal and the role of Ca2+ in red blood cells clearance of healthy individuals
<p>Density reversal of senescent red blood cells (RBCs) has been known for more than ten years, yet the identity of the candidate protein(s) is still elusive. While performing Percoll density gradient separation of RBCs from healthy individuals and their subsequent characterization, we identified a fraction of cells in the low-density fraction (~0.025% compared to total RBCs population) which shows reversal in their densities along with the characteristics of cellular senescence such as loss of membrane Band 3 protein and the phosphatidylserine exposure to the outer membrane leaflet. Our subsequent analysis showed that these cells are overloaded with Ca<sup>2+</sup>. We further measured intracellular [Na<sup>+</sup>] in individual RBCs by flow cytometry utilizing the dye CoroNa Green-AM. Our findings showed that the cells with senescent characteristics lost their transmembrane Na<sup>+</sup> gradient despite maintaining the membrane integrity. Consequently, these findings lead us to designate these cells as “senescent-like” cells. Our data further demonstrated altered activities of nonselective cation channels and pumps in these cells. In addition to a facilitated Na+ extrusion by Na<sup>+</sup>, K+-ATPase, our findings indicated altered ion transport via Piezo1 in these cells. Pharmacological modulation of Piezo1 with Yoda1/GsMTx4 showed that Piezo1 and, possibly, other nonselective cation channels by promiscuously transporting Na<sup>+</sup> and Ca<sup>2+</sup> play an important role in producing these low density “senescent like” cells.</p>
Mutations in the telomerase reverse transcriptase promoter and PIK3CA gene are common events in penile squamous cell carcinoma of Italian and Ugandan patients
<p>Somatic mutations in the promoter region of TERT (TERTp) gene are highly frequent in penile carcinoma in Italian and Ugandan patients, predominantly in human papillomavirus (HPV) negative cancers (67.6%). TERTp and PIK3CA hotspot changes coexist in 15.8% of cases. The higher mutant allele frequencies (MAFs) of TERT -124A/-146A compared to PIK3CA E545K MAFs suggest an asynchronous mutation timing. The coexistence of TERTp and PIK3CA mutations may represent a novel co-actionable therapeutic target in penile carcinoma patients.</p>
Data from: Can Sphagnum removal reverse undesired succession of rich fens under different alkalinity and fertility levels?
<p>Dataset, PCA results and species responses to both experiments as an addition to paper with the title "Can <em>Sphagnum</em> removal reverse undesired succession of rich fens under different alkalinity and fertility levels?"</p>
Data from: Restoration of native saltmarshes can reverse arthropod assemblages and trophic interactions changed by a plant invasion
<p><span>Plant invasions profoundly impact both</span> <span>natural and managed ecosystems, and removal of the invasive plants addresses only part of the problem of restoring impacted areas. The rehabili</span><span>tation of diverse communities and their ecosystem functions following removal of invasive plants is an important goal of ecological restoration. Arthropod assemblages and trophic interactions are important indicators of the success of restoration, but have largely been overlooked in saltmarshes. We determined how arthropod assemblages and trophic interactions changed with the invasion of the exotic plant <em>Spartina</em> <em>alterniflora</em> and with the restoration of the native plant <em>Phragmites australis</em> following <em>Spartina </em>removal in a Chinese saltmarsh. We investigated multiple biotic and abiotic variables to gain insight into the factors underlying the changes in arthropod assemblages and trophic structure. We found that </span><span>although <em>Spartina</em> invasion had changed arthropod diversity, community structure, feeding-guild composition, and the diets of arthropod natural enemies in the saltmarsh, these changes could be reversed by the restoration of native <em><span>Phragmites</span></em> vegetation following removal of the invader. </span><span>The v</span><span>ariation in arthropod assemblages and </span><span>trophic structure </span><span>were </span><span>critically </span><span>associated with four biotic and abiotic variables (aboveground biomass, plant density, leaf N, and soil salinity)<span>. </span></span><span>Our findings demonstrate the positive effects of controlling invasive plants on biodiversity and nutrient cycling, and </span><span>provide a foundation </span><span>for assessing the efficacy of ecological restoration projects in saltmarshes.</span></p>
Data set of Reversing anterior insular cortex neuronal hypoexcitability attenuates compulsive behavior in juvenile rats
<p>Development of self-regulatory competencies during adolescence is partially dependent on normative brain maturation. Here we report that adolescent rats as compared to adults exhibit impulsive and compulsive-like behavioral traits, the latter being associated with lower expression of mRNA levels of the immediate early gene zif268 in the anterior insula cortex (AIC). This suggests that underdeveloped AIC function in adolescent rats could contribute to an immature pattern of interoceptive cue integration in decision-making and a compulsive phenotype. In support of this, we report that layer 5 pyramidal neurons in the adolescent rat AIC are hypoexcitable and receive fewer glutamatergic synaptic inputs compared to adults. Chemogenetic activation of the AIC attenuated compulsive traits in adolescent rats supporting the idea that in early stages of AIC maturity there exists a suboptimal integration of sensory and cognitive information that contributes to inflexible behaviors in specific conditions of reward availability.</p>
Timescale reverses the relationship between host density and infection risk
Host density shapes infection risk through two opposing phenomena. First, when infective stages are subdivided among multiple hosts, greater host densities decrease infection risk through "safety in numbers". Hosts, however, represent resources for parasites, and greater host availability also fuels parasite reproduction. Hence, host density increases infection risk through "density-dependent transmission". Theory proposes that these phenomena are not disparate outcomes but occur over different timescales. That is, higher host densities may reduce short-term infection risk, but because they support parasite reproduction, may increase long-term risk. We tested this theory in a zooplankton-disease system with laboratory experiments and field observations. Supporting theory, we found that negative density-risk relationships ('safety in numbers') sometimes emerged over short timescales, but these relationships reversed to 'density-dependent transmission' within two generations. By allowing parasite numerical responses to play out, time can shift the consequences of host density, from reduced immediate risk to amplified future risk.
Dataset for: Ultrarapid detection of SARS-CoV-2 RNA using a reverse transcription-free exponential amplification reaction, RTF-EXPAR
<p>A dataset is reported for a rapid isothermal method for detecting severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the virus responsible for COVID-19. The procedure uses an unprecedented reverse transcription–free (RTF) approach for converting genomic RNA into DNA. This involves the formation of an RNA/DNA heteroduplex whose selective cleavage generates a short DNA trigger strand, which is then rapidly amplified using the exponential amplification reaction (EXPAR). Deploying the RNA-to-DNA conversion and amplification stages of the RTF-EXPAR assay in a single step results in the detection, via a fluorescence read-out, of single figure copy numbers per microliter of SARS-CoV-2 RNA in under 10 min. In direct three-way comparison studies the assay has been found to be faster than both PCR and loop-mediated isothermal amplification (LAMP), while being just as sensitive. The assay protocol involves the use of standard laboratory equipment and is readily adaptable for the detection of other RNA-based agents.</p>
A Parcellation Scheme of Mouse Isocortex Based on Reversals in Connectivity Gradients
<p>This dataset contains a parcellation of mouse isocortex into a hierarchy of subregions. The parcellation is based on the detection of gradient reversals in voxelized connectivity, as described in our latest preprint manuscript.</p> <p>The connectivity dataset used for this purpose was the voxelized mouse connectome published by the Allen Institute for Brain Science, available at <a href="https://connectivity.brain-map.org">connectivity.brain-map.org</a> (data) and <a href="https://github.com/AllenInstitute/mouse_connectivity_models">github.com/AllenInstitute</a> (code)</p> <p>Region id annotations are provided in .nrrd format. Refer to the <a href="http://teem.sourceforge.net/nrrd/format.html">NRRD documentation</a> for details.</p> <p>The hierarchy is provided in the accompanying json file. For each region, an entry "structure_id_path" is provided that lists the ids of regions on the path from the root (i.e. isocortex) to the region in question.</p> <p>For more information, please read the accompanying manuscript. We will provide the link here, once it is online.</p>
Data from: Evolutionary divergence via sexual selection acting on females in a species with sex role reversal
<p>1. There is much evidence that sexual selection drives the evolutionary divergence of male sexual traits, but little is known of females.</p> <p>2. Comparisons between neutral genetic divergence (FST) and phenotypic divergence (PST) among populations can reveal evolutionary responses to selection.</p> <p>3. In the bushcricket <em>Kawanaphila nartee</em>, changes in floral food availability cause sex roles to shift from competitive females and choosy males to choosy females and competitive males midway through the breeding season. Males call to attract females, and female auditory spiracle size is under sexual selection. We ask whether selection on females can drive an evolutionary divergence in auditory spiracle size among populations.</p> <p>4. We sampled 188 individuals from nine geographic locations and analysed 9,478 neutral SNP loci and two phenotypic characters to estimate FST and PST, respectively.</p> <p>5. We found that PST for female auditory spiracle size far exceeded the global FST, suggesting that female auditory spiracle size is subject to strong directional selection. We relate differences in phenotypic traits to differences in geological and floristic characteristics among the sites.</p> <p>6. Our data suggest that variation in sexual selection driven by variation in the floristic community on which this species feeds may contribute to the strength of directional selection acting on female <em>K. nartee</em> among populations.</p> <p>7. Together, these findings indicate that divergence among populations can be driven by sexual selection acting on females, even when that selection is temporary and circumscribed.</p>
Connective Field maps via reverse-correlation
<p>This data set contains processed CF and, where applicable, pRF mapping data for our project investigating the robustness of our CF reverse-correlation methods in the presence of eye movement and optical defocus.</p> <p>There are several participants in this archive. All of them participated in the LaserKiwi experiment in which they engaged in a video game, shooting coronaviruses with their eye gaze. Three participants (P4, P5, P6) also participated in the Unstable Eye experiments in which we used a classical sweeping bar pRF mapping design either with stable eye fixation in the screen centre or at a randomly jumping fixation dot.</p> <p>You will need SamSrf to read these files (version 9.3 recommended). It has been tested on Matlab R2020a & b.</p> <p> </p>
Text-fig. 2. Type specimen of Palmocarpon cretaceum MIQUEL, 1853 (V 21763 in the NHM, London). a: Shows the front (for comparison with Text-fig. 1), b: shows the reverse, with the label glued to it. in The Type Of Palmocarpon Cretaceum Miq., 1853 Described From The Cretaceous Of The Sint-Pietersberg, The Netherlands, Is An Eocene Nypa Burtinii (Brongn.) Ettingsh., 1879, Most Likely From The Brussels Area, Belgium
Text-fig. 2. Type specimen of Palmocarpon cretaceum MIQUEL, 1853 (V 21763 in the NHM, London). a: Shows the front (for comparison with Text-fig. 1), b: shows the reverse, with the label glued to it.
KC0P 40 m SEQP Reverse Beacon Network Log of Spots
<p>Log of the Spots generated by the Reverse Beacon Network of the 40 m transmissions of KC0P during the</p> <p>SEQP on August 21, 2017.</p>
Reverse Beacon Network Download for Eclipse Data at Corvallis, OR (massaged)
<p>The upload contains an Eclipse Excel spreadsheet that is enhanced from a Reverse Beacon Network (RBN) export, and sorted by receiving callsign and Zulu PM time during the eclipse and 15 minutes before and for a period from 8:45 to 12:30, local Corvallis time. The experiment looked at the RBN sites who received CW signals from the callsign WG0R, which was transmitting test messages at 100 Watts using the below station resources.</p> <p>The transmission resources are: Elecraft KX3, KXPA100, and PX3 transceiver, 100 Watt amplifier, and Panadapter, driving a Carolina Windom Antenna at 10 meterrs above ground level, strung at 150 to 330 degrees in two Oak trees.</p> <p> </p>
2017 August 21 WL7C Solar Eclipse Reverse Beacon Raw Data from Grid EM66HN
<p><strong>Craig Daniel Fry WL7C, EM66HN</strong></p> <p><strong>Lat/Lon: 36.561667, -87.376667</strong></p> <p><strong>Antennae Type: Fan Dipole</strong></p> <p><strong>Antenna Pointing Direction: Near Vertical Incidence Skywave (NVIS), Dipole listening NE-SW; approx 20ft in height, 80 ft loaded dipole</strong></p> <p><strong>Receiver Type:SDRPlay SP2 pro</strong></p> <p><strong>Additional Notes: </strong></p> <p><strong>(1)The CSV fi</strong><strong>le is a diary of the spots reported to the Reverse Beacon Network and pertinent timing, narrow frequency bands, and dx call signs</strong></p> <p><strong>(2) Software used: HDSDR, CWSkimmer</strong></p>
→ Fig. 2. Representative skeletal elements of ornithosuchid archosaur Dynamosuchus collisensis gen. et sp. nov. (CAPPA/UFSM 0248) from Janner outcrop, Carnian, Late Triassic. A. Selected skull bones in left lateral view. B. Reconstruction of the skull. C. Skull in ventral view. D. Left quadrate and quadratojugal in posterodorsal view. E. Parabasisphenoid in left lateral view. F. Neural arch of an anterior cervical vertebra in anterior view. G. Centrum of a cervical vertebra in left lateral view. H. Right osteoderm in dorsal view. I. Neural arch of an anterior dorsal vertebra in left lateral view. J. Left ilium in lateral view. L. Right humerus in anterior view. M. Right forearm in medial view. N. Left manus in dorsal view. O. Right (reversed) pubis in lateral view. P. Left femur in anterior view. Q. Left fibula in lateral view. Some unpreserved portions are modified from Baczko et al. in press, for the reconstruction of the skeleton of CAPPA/UFSM 0248 (preserved elements indicated in orange) (K). Scale bars 20 mm. in The first ornithosuchid from Brazil and its macroevolutionary and phylogenetic implications for Late Triassic faunas in Gondwana
→ Fig. 2. Representative skeletal elements of ornithosuchid archosaur Dynamosuchus collisensis gen. et sp. nov. (CAPPA/UFSM 0248) from Janner outcrop, Carnian, Late Triassic. A. Selected skull bones in left lateral view. B. Reconstruction of the skull. C. Skull in ventral view. D. Left quadrate and quadratojugal in posterodorsal view. E. Parabasisphenoid in left lateral view. F. Neural arch of an anterior cervical vertebra in anterior view. G. Centrum of a cervical vertebra in left lateral view. H. Right osteoderm in dorsal view. I. Neural arch of an anterior dorsal vertebra in left lateral view. J. Left ilium in lateral view. L. Right humerus in anterior view. M. Right forearm in medial view. N. Left manus in dorsal view. O. Right (reversed) pubis in lateral view. P. Left femur in anterior view. Q. Left fibula in lateral view. Some unpreserved portions are modified from Baczko et al. in press, for the reconstruction of the skeleton of CAPPA/UFSM 0248 (preserved elements indicated in orange) (K). Scale bars 20 mm.
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.