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1,709 results for “Reflectivity”
Putting green clipping yield, canopy reflectance, and vegetative indices by time from colorant and spray oil combination product application
<p>Multispectral radiometry resolutely quantifies canopy attributes of similarly managed monocultures over wide and varied temporal arrays. Likewise, liquid phthalocyanine-containing products are commonly applied to turfgrass as a spray pattern indicator, dormancy colorant, and/or product synergist. While perturbed multispectral radiometric characterization of putting greens within 24 h of treatment by synthetic phthalocyanine colorant has been reported, explicit guidance on subsequent use is absent from the literature. Our objective was to assess creeping bentgrass (Agrostis stolonifera L. 'Penn G2') putting green reflectance and growth one to 14 d following semi-monthly treatment by synthetic Cu II phthalocyanine colorant (Col) and petroleum-derived spray oil (PDSO) combination product at a 27 L ha–1 rate and/or 7.32 hg ha–1 soluble N treatment by one of two commercial liquid fertilizers. As observed in a bentgrass fairway companion study, mean daily shoot growth and canopy dark green color index (DGCI) increased with Col+PDSO complimented N treatment. Yet contrary to the fairway study results, deflated mean normalized differential red edge (NDRE) or vegetative index (NDVI) resulted from an associated Col+PDSO artifact that severely impeded near infrared (810-nm) putting green canopy reflectance. Regardless of time from Col+PDSO combination product treatment, the authors strongly discourage turfgrass scientists from employing vegetative indices that rely on 760- or 810-nm canopy reflectance when evaluating such putting green systems.</p>
Fairway reflectance and clipping yield from: Reduced creeping bentgrass fairway reflectance following synthetic colorant application
<p>Repeated measures using multispectral radiometry resolutely quantify canopy attributes of identical turfgrass cultivars under similar management. Concern regarding multispectral radiometric characterization of turfgrass canopies <24 h following synthetic phthalocyanine colorant application has been affirmed and is accordingly now avoided; yet explicit guidance on subsequent employ, at time(s) >24-h post-application, is lacking. Our objective assessed how petroleum-derived spray oil (PDSO) and synthetic Cu II phthalocyanine colorant (C) combination product influences creeping bentgrass (<em>Agrostis stolonifera</em> L.) reflectance up to 10 d following application. A maintained fairway received semi-monthly 9.76 kg ha<sup>–1</sup> soluble N treatments alone or in combination with 27 L PDSO+C ha<sup>–1</sup>. Treatment by PDSO+C increased mean shoot growth (kg ha<sup>–1</sup>) and dark green color index (DGCI) calculated by visible waveband reflectance. Yet reduced far red and near infrared reflectance from PDSO+C treated plots artificially deflated mean normalized differential vegetative indices (NDVI). Cautious interpretation of vegetative indices relying on 710- to 810-nm canopy reflectance is encouraged when evaluating fairways treated by PDSO and Cu II phthalocyanine combination product(s).</p>
A 2D seismic reflection dataset of the Caosiyao giant porphyry Mo deposit in the shallow coverage area in Jining, Inner Mongolia, China
<p>Our paper, '<strong>A 2D seismic reflection</strong> <strong>dataset of the Caosiyao giant porphyry Mo deposit in the shallow coverage area in Jining, Inner Mongolia, China</strong>' in <strong>Geoscience Data Journal, </strong>provides a new open dataset for the Caosiyao deposit area to address the paucity of publicly accessible geophysical datasets in shallow covered areas or hardrock areas.</p> <p>Three two-dimensional (2D) seismic reflection exploration profiles (profile 3, 8 and 16) were completed in the Caosiyao deposit area with a total length of 20 km, 488 shots were stimulated by the combination of double-couple seismic sources. In the Caosiyao deposit area, three two-dimensional (2D) seismic reflection exploration profiles (profiles 3, 8 and 16) totaling 20 km in length were completed. The combination of double-couple seismic sources triggered 488 shots. Briefly, the files consist of 488 shots in Caosiyao deposit area: ‘Caosiyao - seismic profile 3’ contains 88 single shot records; ‘Caosiyao - seismic profile 8’ and ‘Caosiyao - seismic profile 16’ both contains 200 single shot records. In addition, all 2D reflection seismic single-shot data are in SEGD format. </p> <p>The international advanced super detector and double controllable seismic source combined excitation instruments were used to guarantee acquisition quality and acquisition depth. The controllable seismic source combination of a 2013 French Nomad-65, weighing 65000 pounds (28 tons), was employed for excitation, and a Sercel 428XL digital seismic acquisition equipment was used for recording.</p> <p>We thoroughly analyze the seismic profile 8, and our dataset afterwards contributes to a better comprehension of the deep geological structures of the research area and delineate the location of the shallow and deep rock masses.</p> <p>Note: The datasets given are protected with password, and the password is available in our published paper.</p>
Data from: Interspecific allometric scaling in eDNA production among Northwestern Atlantic bony fishes reflects physiological allometric scaling
<p>Relating environmental DNA (eDNA) signal strength to organism abundance requires a fundamental understanding of eDNA production. A number of studies have demonstrated that eDNA production may scale allometrically – that is, larger organisms tend to exhibit lower mass-specific eDNA production rates, likely due to allometric scaling in key processes related to eDNA production (e.g. surface area, excretion/egestion). While most previous studies have examined intra-specific allometry, physiological rates and organism surface area also scale allometrically across species. We therefore hypothesize that eDNA production will similarly exhibit inter-specific allometric scaling. To evaluate this hypothesis, we reanalyzed previously published eDNA data from Stoeckle et al. (2021) which compared metabarcoding read count to organism count and biomass data obtained from trawl surveys off the New Jersey coast. Using a Bayesian model we empirically estimated the value of the allometric scaling coefficient ('b') for Northwestern Atlantic bony fishes to be 0.77 (credible interval = 0.64 – 0.92), although our model failed to converge for Chondrichthyan species. We found that integrating allometry significantly improved correlations between organism abundance and metabarcoding read count relative to traditional metrics of abundance (density and biomass) for bony fishes. Although substantial unexplained variation remains in the relationship between read count and organism abundance, our study provides evidence that eDNA production may scale allometrically across species in some contexts. Future studies investigating the relationship between eDNA signal strength and metrics of fish abundance could potentially be improved by accounting for allometry; to this end, we developed an online tool that can facilitate the integration of allometry in eDNA/abundance relationships.</p>
Seasonal surface reflectance mosaics of Blackhawk Island, Wisconsin May-October 2018
<p>This dataset contains high-resolution hyperspectral surface reflectance mosaics collected over Blackhawk Island, Wisconsin, USA. Images were collected at eight dates during the 2018 growing season (May – October) using a VNIR-SWIR (400–2400nm) HySpex airborne imaging system at 1m spatial resolution.</p>
Pupil size reflects activation of subcortical ascending arousal system nuclei during rest
<p>Neuromodulatory nuclei that are part of the ascending arousal system (AAS) play a crucial role in regulating cortical state and optimizing task performance. Pupil diameter, under constant luminance conditions, is increasingly used as an index of activity of these AAS nuclei. Indeed, task-based functional imaging studies in humans have begun to provide evidence of stimulus-driven pupil-AAS coupling. However, whether there is such a tight pupil-AAS coupling during rest is not clear. To address this question, we examined simultaneously acquired resting-state fMRI and pupil-size data from 74 participants, focusing on six AAS nuclei: the locus coeruleus, ventral tegmental area, substantia nigra, dorsal and median raphe nuclei, and cholinergic basal forebrain. Activation in all six AAS nuclei was optimally correlated with pupil size at 0- to 2-second lags, suggesting that spontaneous pupil changes were almost immediately followed by corresponding BOLD-signal changes in the AAS. These results suggest that spontaneous changes in pupil size that occur during states of rest can be used as a noninvasive general index of activity in AAS nuclei. Importantly, the nature of pupil-AAS coupling during rest appears to be vastly different from the relatively slow canonical hemodynamic response function that has been used to characterize task-related pupil-AAS coupling.</p>
Disentangling thermal from alternative drivers of reflectance in jewel beetles: a macroecological study
<p><span>To predict future colour-climate relationships, it is important to distinguish thermal drivers of reflectance from other evolutionary drivers. This can be achieved by comparing relationships between climate and colouration in ultraviolet-visible (UV-Vis) and near-infrared (NIR) light, separately; yet NIR properties have been measured in very few species. Here, we used jewel beetles (Coleoptera: Buprestidae) as models to identify climatic drivers of reflectance because jewel beetles have highly diverse colouration, a wide distribution, and are often active in hot conditions. Specifically, we tested the association between climate, body size and reflectance using a phylogenetic comparative analysis for three wavebands (UV-Vis, NIR, total). Results showed that reflectance of jewel beetles was more strongly predicted by body size than climate. NIR and total reflectance was not associated with climate, but larger beetles had higher NIR reflectance. For UV-Vis reflectance, small beetles were darker in warmer and more humid environments, whereas there was no association with climate for large beetles. Our study suggests that reflectance variation of jewel beetles is not driven by thermal requirements and highlights the importance of considering NIR reflectance when evaluating explanations of colour effects on thermoregulation.</span></p>
Centris pallida reflectance and hair density dataset
<p>Incoming solar radiation (wavelengths 290–2500 nm) significantly affects an organism's thermal balance via radiative heat gain. Species adapted to different environments can differ in solar reflectance profiles. We hypothesized that conspecific individuals using thermally distinct microhabitats to engage in fitness-relevant behaviors would show intraspecific differences in reflectance: we predicted individuals that use hot microclimates (where radiative heat gain represents a greater thermoregulatory challenge) would be more reflective across the entire solar spectrum than those using cooler microclimates. Differences in near-infrared (NIR) reflectance (700–2500 nm) are strongly indicative of thermoregulatory adaptation as, unlike differences in visible reflectance (400–700 nm), they are not perceived by ecological or social partners. We tested these predictions in male <em>Centris pallida</em> (Hymenoptera: Apidae) bees from the Sonoran Desert. Male <em>C. pallida</em> use alternative reproductive tactics that are associated with distinct microclimates: large-morph males, with paler visible coloration, behave in an extremely hot microclimate close to the ground, while small-morph males, with a dark brown dorsal coloration, frequently use cooler microclimates above the ground near vegetation. We found that large-morph males had higher reflectance of solar radiation (UV through NIR) resulting in lower solar absorption coefficients. This thermoregulatory adaptation was specific to the dorsal surface and produced by differences in hair, not cuticle, characteristics. Our results showed that intraspecific variation in behavior, particularly in relation to microclimate use, can generate unique thermal adaptations that change the reflectance of shortwave radiation among individuals within the same population.</p>
Spectral data associated to the publication: "Reflectance study of ice and Mars soil simulant associations—II. CO2 and H2O ice" by Z. Yoldi et al. (Icarus 386, 2022)
<p>This is the complete set of experimental VIS-NIR reflectance data collected by Z. Yoldi and co-authors for the article "Reflectance study of ice and Mars soil simulant associations—II. CO2 and H2O ice" published in Icarus 386 (2022). doi: https://doi.org/10.1016/j.icarus.2022.115116.</p> <p>A pre-print of the article is also freely available on ArXiv:</p> <p>https://arxiv.org/abs/2207.13905</p> <p>The article provides the methodology for the spectral aquisitions, discussion of the errors and uncertainties, analysis of the spectra and implications for the composition of Solar System surfaces.</p> <p>The spectral data are organised in folders corresponding to the different types of experiments detailed in the article. In case both hyperspectral and multispectral data were acquired, they are organised in subfolders.</p> <p>The spectral files inside these folders and subfolders have the following naming convention:</p> <p>spectrum_YYYYMMDD_experiment_name_TYPE_XX_YYY.csv</p> <p>Where TYPE is either multi (multispectral) or hyper (hyperspectral), XX indicates different samples within the experiment (see paper, figures and tables) and YYY is a sequential number in case of a temporal evolution (sublimation experiment in "20180207_ternary_mixture" with 12 timesteps).</p> <p> The files are in csv format (columns separated by comma) and the content of each column is indicated in the first line (header).</p>
Controlled crossed Andreev reflection and elastic co-tunneling mediated by Andreev bound states
<p>This repository contains measured data related to the "Controlled crossed Andreev reflection and elastic co-tunneling mediated by Andreev bound states" publication. Code reproducing all paper plots is included as well.</p> <p>Tu run the Jupyter notebook, install Anaconda and the package QCoDeS.</p>
Reflectance spectra of some species of a Mediterranean shrubland submitted to climate change
<p>Data file of the reflectance spectra of different association of<em> Quercus coccifera, Rosmarinus officinalis </em>and <em>Cistus albidus </em>in the presence<em> of </em> <em>Ulex parviflorus.</em></p>
Supplemental files for manuscript "The circulating phageome reflects bacterial infections"
<p>These are the supplemental files associated with the manuscript "The circulating phageome reflects bacterial infections". These include:</p> <p>1. Supplemental File 1 (Phage Dictionary).csv which is a dictionary connecting bacteriophage accession numbers to their known taxonomic data as well as the taxonomic data of their host if known.</p> <p>2. Supplemental File 2 (Coliphage Characteristics).csv which is a dictionary for phages which infect <em>Escherichia coli</em> including host information to strain if known and characteristics of any known strains.</p> <p>3. Supplemental File 3 (Metadata).xlsx which includes a metadata table for the plasma cfDNA samples sequenced in the associated study, including infection etiology.</p> <p>4. Supplemental File 4 (Negative Controls).xlsx which includes the sequences and identities of short reads from our negative sequencing controls (PBS, Water)</p>
Fabrication of low loss III-V Bragg-reflection waveguides for parametric down-conversion
<p>Measurements of sidewall roughness (AFM), optical losses (transmission) and photon pair coincidence counts (coinc) of Bragg-reflection waveguides.</p> <p>Data are contained in .csv files. Example plots are .pdf or .png format.</p> <p>RF: with reflow step</p> <p>No RF: without reflow step</p> <p>Coinc: Coincidence Counts</p>
Sensitivity of Arctic Surface Temperature to Including a Comprehensive Ocean Interior Reflectance to the Ocean Surface Albedo within the Fully Coupled CESM2
<p>CESM2 simulations were performed to study the light attenuation effects at the ocean surface layer on Arctic surface temperature. This dataset provides some simulated variables analyzed in our study.</p>
Dataset for "Microwave Observations of Ganymede's Sub-Surface Ice Part II: Reflected Radiation"
<p>Dataset for figures in paper "Microwave Observations of Ganymede's Sub-Surface Ice Part II: Reflected Radiation".</p>
R scripts for manuscript "The circulating phageome reflects bacterial infections"
<p>These are documents and an R script associated with the manuscript "The circulating phageome reflects bacterial infections".</p> <p>These include:</p> <p>1. allphagedf_seqids.csv which is a table including number of BLAST hits to unique phage Genbank IDs by sample. The samples used in this table are the 71 (61 septic, 10 asymptomatic controls) sequenced in this study. The rows of this table correspond to samples (rownames are library IDs) and columns correspond to all identified phage Genbank IDs from the blast output.</p> <p>2. Phageome Summaries.RMD which is an R markdown document which demonstrates i) processing of blast output into a new allphagedf_seqids document, ii) use of the phage dictionary to summarize representation of phage taxonomic families as well as host genuses, and iii) use of the coliphage dictionary to assess how E. coli phages represent known host bacterial characteristics across samples.</p> <p>3. Readme.txt which summarizes the above as well as provides links to other relevant data.</p>
Data for: Static allometries do not reflect evolutionary allometry in exaggerated weaponry of male New Zealand sheetweb spiders (Cambridgea spp.)
<p>Across the animal kingdom, exaggerated weaponry is frequently used by one sex to contest access for potential mates. Within species, if disproportionate investment in weaponry confers an advantage to larger individuals, this may result in positive static allometry. It is predicted that the same selective pressures may also lead to positive evolutionary allometry, where larger species bear disproportionately large weapons on average, compared with smaller species. However it is unclear whether the slopes of species-specific static allometries are steeper among larger species, or remain consistent. All adult males across the New Zealand sheet-web spider genus Cambridgea bear exaggerated chelicerae which are used to compete for control of females' webs. Here, we characterise the distribution of chelicera lengths within each sex of 12 Cambridgea species to show that chelicerae almost always exhibit positive static allometry in males while female chelicera lengths are consistently isometric. We use comparative phylogenetic methods to demonstrate that the slopes of static allometries steepen in males of larger species but that the ratio of average chelicera length to cephalothorax width is tightly conserved across taxa, leading to an isometric evolutionary allometry. While sexual selection may drive weapon exaggeration within species, resulting in steeper or shallower static allometries, this conservation of relative trait size suggests that chelicera length is subject to other stabilising selective pressures. Changes to species body plans might be constrained, while allowing for disproportionate investment in weapon traits at the extremes of body sizes within species.</p>
BRDF-data for the Metrologia article "Accounting for polarization–related effects in the measurement of the bidirectional reflectance distribution function"
<p>This zip-file includes the BRDF-data used in the article "Accounting for polarization–related effects in the measurement of the bidirectional reflectance distribution function" published in Metrologia 57 (2020). </p>
Predicting Pulsed Laser Deposition SrTiO3 Homoepitaxy Growth Dynamics using High-Speed Reflection High-Energy Electron Diffraction - sample untreated_162nm
<p>RHEED intensity image dataset of sample <strong>untreated_162nm</strong> in work "Predicting Pulsed Laser Deposition SrTiO<sub>3 </sub>Homoepitaxy Growth Dynamics using High-Speed Reflection High-Energy Electron Diffraction."</p>
Predicting Pulsed Laser Deposition SrTiO3 Homoepitaxy Growth Dynamics using High-Speed Reflection High-Energy Electron Diffraction - sample treated_81nm
<p>RHEED intensity image dataset of sample <strong>t0.08</strong> in work "Predicting Pulsed Laser Deposition SrTiO<sub>3 </sub>Homoepitaxy Growth Dynamics using High-Speed Reflection High-Energy Electron Diffraction."</p>
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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.
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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.
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