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1,610 results for “ratio”
Figure 1 in Population dynamics, seasonality and sex ratio of twig-girdling beetles (Coleoptera: Cerambycidae: Lamiinae: Onciderini) of an Atlantic rain forest in south-eastern Brazil
Figure 1. Rank-abundance pattern of adult beetles of the tribe Onciderini found at the Serra do Japi between December 2002 and December 2006. (n = 1113 individuals).
Figure 3 in Population dynamics, seasonality and sex ratio of twig-girdling beetles (Coleoptera: Cerambycidae: Lamiinae: Onciderini) of an Atlantic rain forest in south-eastern Brazil
Figure 3. (A) Population fluctuation (number of individuals) of adult beetles of the tribe Onciderini found at the Serra do Japi between December 2002 and December 2006 (n = 1113 individuals). (B) Climate diagram for the Biological Reserve of the Serra do Japi at the same time period (data from a meteorological station approximately 8 km from the study site). The mean monthly temperature (◦ C) and rainfall (mm) are scaled to represent the potential evapotranspiration. Values inside each diagram indicate mean temperature (◦C) and total rainfall (mm) for each sampling year. Dry months are represented by dotted areas; humid months by the vertical lines and months with rain in excess of 100 mm are in solid black.
DATASET: Forecast made on January 11, 2021 for the second Covid-19 wave based on the improved SIR model with a constant ratio of recovery to infection rate
<p>The temporal evolution of second and subsequent waves of the Covid-19 pandemic is investigated. Analytic expressions for the peak time and asymptotic behaviors, early doubling time, late half decay time, and a half-early peak law, characterizing the dynamical evolution of number of cases and fatalities are derived, where the pandemic evolution exhibiting multiple waves is described by the semi-time SIR model. The asymmetry of the epidemic wave and its exponential tail are affected by the initial conditions; a feature that has no analogue in the all-time SIR model. Our analysis reveals that the immunity is very strongly increasing during the 2nd wave. Wave-specific SIR parameters describing infection and recovery rates we find to behave in a similar fashion. Still, an apparently moderate change of their ratio can have significant consequences. As we show, the probability for an additional wave is however low in several countries due to the fraction of immune inhabitants at the end of the 2nd wave, irrespective the currently ongoing vaccination efforts. We compare with alternate approaches and data available at the time of submission. Most recent data serves to demonstrate the successful forecast and high accuracy of the SIR-model in predicting the evolution of pandemic outbreaks.</p>
Influence of local density and sex ratio on pollination in an ambophilous flowering plant
<p class="MSbody"><span><b>PREMISE OF THE STUDY:</b> Variation in local density and sex ratio in dioecious plants can affect mating success through the actions of pollen vectors, principally generalist insects or wind. Increased density and male-biased sex ratios should promote pollen transfer and seed production, but their combined effects have not been investigated for ambophilous species, which exhibit both insect and wind pollination. </span></p> <p class="MSbody"><span><b>METHODS: </b>We manipulated density (low vs. high) and sex ratio (1:1 vs. 3:1 male-biased) in arrays of dioecious ambophilous <i>Thalictrum pubescens</i>. We quantified visitation rates and foraging time to examine whether pollinators exhibited sex-specific preferences and determined the seed set of arrays.<b> </b></span></p> <p class="MSbody"><b>KEY RESULTS:</b> Pollinators visited more plants per foraging bout at high than low density. Visitation rates and foraging times of visitors were greater for male than female plants but did not depend on the density or sex ratio of arrays. However, whereas solitary bees displayed a strong preference for males, hover flies were indifferent to plant sex phenotype. Solitary bees also visited significantly more plants per foraging bout than hover flies. There was a significant interaction between density and sex ratio on seed set. At low density, seed set was greater for 1:1 than 3:1 arrays, but at high density the opposite pattern occurred. </p> <p class="MSbody"><b>CONCLUSIONS: </b>The demographic factors we investigated had complex influences on pollinator foraging behavior and patterns of seed set. Several factors may explain our results including the influence of density and sex ratio on pollen export from arrays, grooming by pollinators and the contribution of wind pollination.</p>
Figure 1 in Natural history of Peucetia flava (Araneae, Oxyopidae): seasonal density fluctuation, phenology and sex ratio on the glandular plant Rhyncanthera dichotoma (Melastomataceae)
Figure 1. (A) Seasonal fluctuations in the number of Peucetia flava individuals, egg sacs, abundance of leaves, flowers and fruits of Rhyncanthera dichotoma; (B) monthly rainfall and temperature variation during the study period (data from a meteorological station approximately 7 km from the study site); and (C) seasonal fluctuations in the numbers of free arthropods and of arthropods adhering to the glandular trichomes on leaves of R. dichotoma.
Text-fig. 7. Scatter diagram of molar length against the ratio anterior width / posterior width of upper molars of S. giganteus from Keseköy. in An Exceptional Large Sample Of The Early Miocene Ctenodactyline Rodent Sayimys Giganteus, Specific Variation And Taxonomic Implications
Text-fig. 7. Scatter diagram of molar length against the ratio anterior width / posterior width of upper molars of S. giganteus from Keseköy.
Globigerinoides ruber stable oxygen isotope and Mg/Ca ratios record from IODP Core 363-U1483
<p>We carry out our work on a total of 202 sediment samples spanning the past ~400 kyr from IODP Core 363-U1483 (13.09°S, 121.80°E; water depth: 1733 m), which is located close to the southern margin of the ITCZ's latitudinal displacement in the outflow area of the Indonesian Throughflow. In this study, we present Mg/Ca ratios and stable oxygen isotope from tests of planktonic foraminiferal Globigerinoides ruber, respectively.</p>
Supplementary Data for "The heterogeneous K/U and Th/U ratios in different mantle reservoirs".
<p>Supplementary data tables for Ma et al. (2023) associated with the paper entitled "The heterogeneous K/U and Th/U ratios in different mantle reservoirs".</p>
Supplementary Data for "The Phosphorus Budget of the Silicate Earth Based on an Updated Estimate of the P/Nd Ratio" in JGR-Solid Earth.
<p>Supplementary data tables for Ma et al. (2023) associated with the paper entitled "The Phosphorus Budget of the Silicate Earth Based on an Updated Estimate of the P/Nd Ratio" published in <em>JGR-Solid Earth</em>.</p>
Dataset for publication 'Automated g-ratio calculation of sciatic nerve bundles in mice – a new approach for optical microscopy '
<p>Dataset corresponding to the publication <strong>Automated g-ratio calculation of sciatic nerve bundles in mice – a new approach for optical microscopy</strong> intended for publication at Nature Scientific Reports. This repository contains the training, validation and test data.</p>
Eindhoven - Quantity of blue-green spaces as ratio to built form
<p>Ratio of blue-green spaces spaces to built form within a defined urban area in Eindhoven.</p>
Corresponding Dataset for Precision of Spacecraft Doppler Tracking at Low Signal-to-Noise Ratios
<p><br> Corresponding Dataset for Precision of Spacecraft <br> Doppler Tracking at Low Signal-to-Noise Ratios<br> README FILE<br> Dustin Buccino<br> January 1, 2023<br> Jet Propulsion Laboratory<br> California Institute of Technology</p> <p>=============================================================================<br> INTRODUCTION<br> =============================================================================</p> <p> This dataset contains open-loop data collected by the Planetary Radar<br> and Radio Science Group at the Jet Propulsion Laboratory from the Low-SNR<br> Ground System Demonstration with DSS-25 in May 2020. Futhermore, it<br> also provides the necessary data behind the figures in the corresponding<br> publication. This dataset is provided in order to supplement the submitted<br> article to the "Radio Science" journal</p> <p> Buccino, D.R., et al (2023), Precision of Spacecraft Doppler Tracking <br> at Low Signal-to-Noise Ratios, Radio Science, submitted<br> January 2023.</p> <p>=============================================================================<br> ARCHIVE INFORMATION<br> =============================================================================</p> <p> This archive contains several data types, located within subdirectories.<br> <br> ROOT<br> `- 159TEST2022133_1845X25X25RO.A02_XATnn_nndBHz<br> <br> These files are the open-loop data collected at the DSN <br> during the test. There are six files, one for each SNR level. The<br> files are in the DSN-standard 0159-Science format (binary data).<br> To decode these files, one should utilize the software <br> interface specification documents from the Planetary Data System<br> radio science documentation bundle:</p> <p> https://pds-geosciences.wustl.edu/<br> radiosciencedocs/urn-nasa-pds-radiosci_documentation/<br> <br> `- figures.zip<br> <br> This directory contains all data necessary to reproduce the figures<br> in the publication. Data include Doppler residuals, SNR measurement,<br> Allan deviation and associated parameters. Each file in this <br> directory is plain-text.</p> <p>=============================================================================<br> ACKNOWLEDGMENTS<br> =============================================================================</p> <p>This work was carried out at the Jet Propulsion Laboratory, <br> California Institute of Technology, under contract with the National <br> Aeronautics and Space Administration. Government sponsorship acknowledged.</p> <p>=============================================================================<br> PRIMARY POINT OF CONTACT<br> =============================================================================</p> <p>Dustin Buccino<br> Jet Propulsion Laboratory<br> Planetary Radar and Radio Sciences<br> (818) 393 - 1072<br> Dustin.R.Buccino@jpl.nasa.gov</p> <p>=============================================================================<br> ACRONYMS AND ABBREVIATIONS<br> =============================================================================</p> <p> ASCII American Standard Code for Information Interchange<br> DOY Day of year<br> DSN Deep Space Network<br> JPL Jet Propulsion Laboratory<br> NAIF Navigation Ancillary Information Facility<br> NASA National Aeronautics and Space Administration<br> PDS Planetary Data System<br> RS Radio Science<br> RSS Radio Science Subsystem<br> SIS Software Interface Specification<br> TXT Text file<br> UTC Universal Time, Coordinated<br> </p>
Dataset for "Water Table and Permeability Estimation from Multi-Channel Seismoelectric Spectral Ratios"
<p>This dataset is for using multi-channel seismoelectric spectral ratios to estimate the water table depth and permeability of stratified materials. Readers may use the dataset by utilizing the main program entitled "Inv_BL_SESR.m" to excute the inversion procedure and reproduce the figures in the associated paper. For further guidance on accessing the necessary codes and data, please refer to the README file.</p> <p> </p>
A rich hydrocarbon chemistry and high C to O ratio in the inner disk around a very low-mass star
<p>This dataset includes selected portions of the JWST/MIRI spectrum of the J160532 disk analyzed in the paper by Tabone et al. (2023), to be published by Nature Astronomy. The original observational data are part of the Guaranteed Time Observation-MIRI programme ‘MIRI EC Protoplanetary and Debris Disks Survey’ (ID 1282) with number 47 and will become public on August 1st, 2023 on the MAST database https://archive.stsci.edu/. In addition, this release contains the best-fit slab models. Some basic information about the models can be found in the headers.</p> <p>The dataset consists of two data files. The first file contains the continuum subtracted JWST/MIRI spectrum of J160532 in the 12.5-14.7 <span class="math-tex">\(\mu\text{m}\)</span> region shown in Fig. 1 (right panel) of Tabone et al. (2023) where C2H2 emission is seen as a broad bump and prominent narrower features. The best-fit slab models correspond to the highly optically thick C2H2 component I and the optically thinner C2H2 component II. The second file is the continuum subtracted JWST/MIRI spectrum in the 14.6-16.1 <span class="math-tex">\(\mu\text{m}\)</span> region shown in Fig. 2 of Tabone et al. (2023) where C6H6 (benzene), CO2, and C4H2 features are detected. The best-fit slab models for the three species are also provided. Fig. 1 (righ panel) and Fig. 2 of Tabone et al. (2023) can be reproduced using the two Python scripts.</p>
Bicelle size and lipid/surfactant ratio screening - Gwalp tail anchor dimer simulation - 80 Lipids - q0.38 - PBS neutralized - CHARMM36m - 310K - OPC water model
<p>Bicelle size and lipid to surfactant ratio screening to investigate the influence on spin relaxation data with monomers of a given peptide.</p>
Bicelle size and lipid/surfactant ratio screening - Gwalp tail anchor dimer simulation - 60 Lipids - q0.38 - PBS neutralized - CHARMM36m - 310K - OPC water model
<p>Bicelle size and lipid to surfactant ratio screening to investigate the influence on spin relaxation data with monomers of a given peptide.</p>
Bicelle size and lipid/surfactant ratio screening - Magaining 2 tail anchor monomer simulation - 80 Lipids - q0.38 - PBS neutralized - CHARMM36m - 310K - OPC water model
<p>Bicelle size and lipid to surfactant ratio screening to investigate the influence on spin relaxation data with monomers of a given peptide.</p>
Bicelle size and lipid/surfactant ratio screening - Magaining 2 tail anchor monomer simulation - 60 Lipids - q0.38 - PBS neutralized - CHARMM36m - 310K - OPC water model
<p>Bicelle size and lipid to surfactant ratio screening to investigate the influence on spin relaxation data with monomers of a given peptide.</p>
Bicelle size and lipid/surfactant ratio screening - Magaining 2 tail anchor monomer simulation - 120 Lipids - q0.5 - PBS neutralized - CHARMM36m - 310K - TIP3P water model
<p>Bicelle size and lipid to surfactant ratio screening to investigate the influence on spin relaxation data with monomers of a given peptide. Special iteration to investigate the influence of the water model</p>
Bicelle size and lipid/surfactant ratio screening - Gwalp tail anchor monomer simulation - 80 Lipids - q0.38 - PBS neutralized - CHARMM36m - 310K - OPC water model
<p>Bicelle size and lipid to surfactant ratio screening to investigate the influence on spin relaxation data with monomers of a given peptide.</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.