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36 results for “Reflection spectra”
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>
Ancient insect vision tuned for flight amongst rocks and plants underpins natural flower colour diversity - rock, mineral, stick, bark, leaf, bird- and insect-flower petal reflectance spectra
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Distinguishing Between Shock Darkening and Space Weathering Trends in Ordinary Chondrite Reflectance Spectra
<p>The data file contains raw spectra of Chelyabinsk meteorite IM, SD, and SW series as described in the linked journal publication.</p>
FIGURE 4. Mean reflectance spectra for ten body regions measured from three Melozone leucotis subspecies, M. l in Phenotypic variation and vocal divergence reveals a species complex in White-eared Ground-sparrows (Cabanis) (Aves: Passerellidae)
FIGURE 4. Mean reflectance spectra for ten body regions measured from three Melozone leucotis subspecies, M. l. leucotis (solid lines, N = 13), M. l. nigrior (dotted lines, N = 13), and M. l. occipitalis (dashed lines, N = 8). The gray area around each line represents standard error of the mean calculated at every 1nm.
Database of frequency-domain terahertz reflection spectra for the DETRIS project
<p>A detailed description of the database can be found in the Instructions file.</p>
Dataset for "Co-alignment of Laboratory and In-Situ Reflectance Spectra of Chang'e-5 Lunar Soil"
<p>This dataset provides the reflectance data measured in the laboratory for the <45-μm, 45-355-μm fractions, and bulk soil sample, respectively.</p>
LBA-ECO LC-07 Reflectance Spectra and Water Quality of Amazon Basin Floodplain Lakes
This data set includes bidirectional reflectance (BDR) spectra and water-quality data of floodplain lakes of the Solimoes and Negro Rivers in the central Amazon basin, Amazonas, Brazil. Samples and measurements were collected during July 2000 to August 2000. Bidirectional reflectance factors were recorded, at 3 nm intervals from 400 to 900 nm, concurrently with in situ measurements of water temperature and Secchi depth, and collection of samples for analysis of optically active components including total suspended solids, chlorophyll, and dissolved organic carbon (DOC).The lakes sampled were in the low-lying varzea of the Solimoes River ("varzea" is the local name for the floodplain formed by the overflow of white-water rivers) and igapo ("igapo" is the local name for the floodplain formed by the overflow of black-water rivers) of the Negro River.There are two comma-delimited data files with this data set.
ABoVE: Reflectance Spectra of Tundra Plant Communities across Northern Alaska
This dataset reports full-spectrum (350-2500 nm) reflectance measurements of diverse plant communities at the plot-level and individual plant species at the leaf-level, at multiple sites across northern Alaska during the 2017 and 2018 summer field seasons. Plot-level reflectance data (1 m2) include an assemblage of vascular and non-vascular species comprising tundra plant communities, while leaf-level scans are specific to one particular tundra species. Reflectance measurements were collected using a HR-1024i spectrometer and data were calibrated using a Spectralon white reference panel during sampling to correct for changing light conditions. Sampling methods and data and metadata structure follow that of the Ecological Spectral Information System (EcoSIS) Spectral Library.
Visible and Near-Infrared Leaf Reflectance Spectra, 1992-1993 (ACCP)
The leaf spectra datasets contain visible and near infrared reflectance spectra data for both fresh and dry leaf samples collected in the ACCP. These samples are from Blackhawk Island, WI, Harvard Forest, MA, Howland, ME, Jasper Ridge, CA field sites and the Douglas fir and bigleaf maple seedling canopy study sites. Data reported for each sample is absorbance [log(1/Reflectance)] from 400-2498nm at 2nm intervals and a resolution of 10nm. These data were collected for the purpose of determining the relationship of foliar chemical concentrations with visible and near infrared wavelength reflectance spectra.. Both multiple linear regression and partial least square regression techniques have been used to relate lab chemistry data to spectral reflectance. ORNL DAAC maintains information on the entire ACCP.
Seedling Canopy Reflectance Spectra, 1992-1993 (ACCP)
This is a data set of spectral reflectance (400-2500 nm) of small, monospecific canopies formed from seedlings of Douglas-fir (Pseudotsuga menziesii) and bigleaf maple (Acer macrophyllum). The trees were provided different levels of fertilization in order to produce canopies with varying nitrogen and chlorophyll concentration. For the Douglas-fir, fertilization was provided during the dormant season, so there were no differences in growth or leaf area among canopies, and canopies were at a constant density with varying foliar chemistry. For the maple, seedlings were aggregated at various densities, producing a matrix of leaf area as well as chemistry variations. Canopy reflectance was measured under natural sunlight, and canopies were then destructively analyzed for chemical content and leaf area (see ACCP Seedling Canopy Chemistry Data).
Supplementary table from: Spectrometry of Greta oto untreated and hexane treated clear wing regions and simulated reflectance spectra
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HARDERSEN IRTF ASTEROID NIR REFLECTANCE SPECTRA V1.0
This dataset includes average near-infrared (NIR) reflectance spectra for 68 main-belt asteroids that were observed at the NASA Infrared Telescope Facility (IRTF), Mauna Kea, Hawaii, from April 2001 to January 2015. Raw NIR spectral data were obtained under mostly uniform instrumental conditions and include observations of the asteroids, extinction stars, and solar analog stars that were necessary for data reduction and production of the final average asteroid NIR reflectance spectra. SpecPR and Spextool were used during data reduction to produce the final spectra and both programs utilize similar functions that include sky background subtraction, telluric corrections, channel shifting, and averaging routines. The set of asteroids observed include a wide variety of taxonomic types and include V-, S-, M-, X-types that correspond to a wide variety of surface mineralogies, rock types, and potential meteorite analogs.
Hendrix IUE asteroid reflectance spectra V1.0
In this archive we create a one-stop shop of ultraviolet (UV) data of asteroids for easy use by planetary scientists. Currently several of the existing UV datasets are not in the PDS and are unavailable for scientific use by the broad community; others are available only in their raw form. Because UV wavelengths deliver critical access to the uppermost layers of the regoliths of these airless bodies, and can often offer unique compositional information, providing these data in one location will allow for comparative studies over wider ranges of wavelengths, studies of compositional and space weathering effects throughout the solar system, and the often numerous observations of each body will allow for the study of possible temporal and spatial variability. This archive includes derived International Ultraviolet Observer (IUE) reflectance spectra for five asteroid targets.
3067 leaf reflectance spectra data from all leaves of a single tree
<p><span>As our objective was to gather spectral data for every leaf on a single tree, we opted for a relatively small-sized tree. At first, we stimulated the shedding of senescent leaves by gently shaking the tree trunk. Subsequently, we utilized pruning shears to gather terminal twigs (Fig. S1). Following collection, the twig samples were packed in ziplock bags along with moist absorbent paper. Subsequently, these bags were placed in a portable cooler together with ice packs to reduce water loss during transportation. Upon arrival at the laboratory, we proceeded to select all leaves from the twigs. Subsequently, after rinsing them extensively with deionized water, we meticulously removed surface moisture using lint-free paper. After the preprocessing, we immediately collected the fresh leaf reflectance spectra (350-2500 nm) using the ASD FieldSpec (ASD Inc., Boulder, CO, USA) with a leaf contact probe with the calibrated internal light source to minimize errors associated with stray light. Moreover, to improve the spectra measurement quality (i.e., to reduce the noise ratio of spectra signal), we optimized the spectrometer every 10 minutes using a calibration white referenced panel (Spectralon, Lasphere, Durham, NH, USA). We utilized specialized software (ViewSpecPro) to open and inspect each spectral curve. In instances where noticeable errors were detected, the corresponding leaves underwent re-measurement. Concurrently, we recorded the leaf order (LOR) from the top to bottom of the twig. For instance, the first leaf order (LOR1, and subsequent abbreviations from LOR1 to LOR7) corresponds to the uppermost pair of fully expanded leaves (Fig. S1). <em>B. gymnorhiza</em> typically displays opposite phyllotaxy, wherein a single leaf order (LOR) on a twig corresponds to two leaves under normal circumstance<em>s. </em>During transportation, some leaves became detached, and we did not document the order of these separated leaves.</span></p>
Old version of "Mid-Infrared Reflectance and Emissivity Spectra of High Porosity Regoliths"
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HARDERSEN IRTF ASTEROID NIR REFLECTANCE SPECTRA V1.0
This dataset includes average near-infrared (NIR) reflectance spectra for 68 main-belt asteroids that were observed at the NASA Infrared Telescope Facility (IRTF), Mauna Kea, Hawaii, from April 2001 to January 2015. Raw NIR spectral data were obtained under mostly uniform instrumental conditions and include observations of the asteroids, extinction stars, and solar analog stars that were necessary for data reduction and production of the final average asteroid NIR reflectance spectra. SpecPR and Spextool were used during data reduction to produce the final spectra and both programs utilize similar functions that include sky background subtraction, telluric corrections, channel shifting, and averaging routines. The set of asteroids observed include a wide variety of taxonomic types and include V-, S-, M-, X-types that correspond to a wide variety of surface mineralogies, rock types, and potential meteorite analogs.
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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.
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.