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197 results for “Wavelengths”
A Parameterized Model for Differential Galaxy Counts at Any Wavelength
<p>Collected literature values of Schechter functions, resulting parameter values of fits to those data as a function of wavelength, and Python scripts to compute simulated differential galaxy counts based on those parameterisations.</p> <p> </p> <p>Future revisions of galaxy_counts.py can be found at https://github.com/Onoddil/macauff/blob/main/macauff/ galaxy counts.py, and future revisions of literature and parameterisations can be found at https://onoddil.github.io/galaxy evolution/galaxy counts.html.</p>
The dataset by "Spectrally Consistent Scattering, Absorption, and Polarization Properties of Atmospheric Ice Crystals at Wavelengths from 0.2 to 100 μm"
<p>This is the ice crystal single-scattering property dataset introduced in the paper "Yang, Ping, et al. "Spectrally consistent scattering, absorption, and polarization properties of atmospheric ice crystals at wavelengths from 0.2 to 100 μ m." <em>Journal of the Atmospheric Sciences</em> 70.1 (2013): 330-347.".</p>
Frequency Wavelength Multiplexed Optoacoustic Tomography
<p>The measurements datasets for the "Frequency Wavelength Multiplexed Optoacoustic Tomography" publication.</p>
Figure 3. Photosynthetic activity in different wavelengths of light radiation. 5.-Design and Development a Control and Monitoring System for Greenhouse Conditions Based-On Multi Agent System
<p>The greenhouse protects the plants from the extreme weather conditions. However, if the<br> period of daylight prevents the photosynthetic activity, the plants do not grow. Horticultural lighting<br> allows the grower to extend the growing season. It enables a year-round producing of plants or<br> makes it possible for the grower to start sowing in early spring and continue season till the first<br> frost. Plants need about 10-12 hours light to improve growth. When the plants are producing<br> flowers or fruits the supplemental need of light per day increases up to 16 hours. Figure 3 shows the<br> photosynthetic activity in different wavelengths of light radiation [16].</p>
Optical Raman spectra of water in quartz cuvette, and empty quartz cuvette, measured with Thorlabs Raman Kit at 785nm laser diode wavelength
<p>The Thorlabs Raman spectroscopy kit was tested with water. The excitation light was 785nm laser diode. The laser wavelength was calibrated with a NIST polystyrene sample in the shape of a prisma with size of a cuvette. The sample was the empty quartz cuvette, and the cuvette filled with water. Simple subtraction of both spectry yields a watzer spectrum, with a broad H-O-H vibration peak at 900 nm.</p> <p> </p> <p><a href="https://www.thorlabs.de/newgrouppage9.cfm?objectgroup_id=14241">Modular Raman Spectroscopy Kit (thorlabs.de)</a></p>
The wavelength-dependent complex refractive index of hygroscopic aerosol particles and other aqueous media: an effective oscillator model
<p>Using cavity-enhanced Raman spectroscopy of single, optically trapped droplets, we measure both the real and imaginary parts of the refractive index of NaCl, NaNO<sub>3</sub>, (NH<sub>4</sub>)<sub>2</sub>SO<sub>4</sub>, MgSO<sub>4</sub>, citric acid and a 1:1 molar ratio NaCl:NaNO<sub>3</sub> aqueous solutions at a range of water activities. </p>
Influence of wavelength on the laser removal of lichens colonizing heritage stone-Associated dataset
<p>Stone samples from Alpedrete quarry front, Madrid (Spain), which were used to construct heritage buildings and monuments in the Central area of Spain, and from Valonsadero Church (Spain), presenting different types of biological crusts were investigated in order to find the conditions for efficient laser treatment. Samples presenting superficial areas colonized by 6 different lichens: <em>Protoparmeliopsis volcana </em>and<em> muralis </em>(foliose)<em>, Aspicilia vidrescensa </em>and<em> contorta, Candelariella vitelina </em>and<em> Rhizocarpon</em> disporum (crustose) were selected for laser treatment.</p> <p>In order to determine the best laser irradiation conditions UV-Visible absorption spectroscopy was performed from ethanol diluted bioderioration crust of each sample and ablation threshold was found for each stone substrate. A comparative study was carried out on the mentioned samples with infrared, ultraviolet and sequences of both nanosecond laser pulses using the fundamental (1064 nm), 3<sup>rd</sup> (355 nm) and 4<sup>th</sup> (266 nm) harmonic output of a Q-switched Nd:YAG laser system (pulse duration 17 ns, repetition rate 1-10 Hz) at fluences just below umbral threshold. </p>
High-throughput Computational Screening of Hydrocarbon Molecules for Long-wavelength Infrared Imaging
<p>This repository contains datasets associated with the paper titled "High-throughput Computational Screening of Hydrocarbon Molecules for Long-wavelength Infrared Imaging," accepted at ACS Materials Letters Journal.</p> <p><strong>Contents:</strong></p> <ol> <li> <p><strong>Optimized XYZ Coordinates:</strong> The hydrocarbon molecules' XYZ coordinates, obtained using the B3LYP functional and the 6-31g(d,p) basis set in Gaussian 16 software, used to simulate the IR spectra (including transition energies and absorption intensities) of the molecules.</p> </li> <li> <p><strong>Broadened Molar Absorptivity IR Spectra:</strong> The dataset's IR spectra, broadened using a Lorentzian band shape with a gamma (half-width at half-height) value of 5 cm⁻¹. Molecules with imaginary frequencies have been excluded.</p> </li> <li> <p><strong>Related SMILES Strings:</strong> Contains SMILES strings for these hydrocarbons.</p> </li> <li> <p><strong>NUMBERS_SMILES.csv:</strong> Provides the associated SMILES string for each numerated XYZ coordinate.</p> </li> </ol> <p>For any inquiries, please contact Dr. Maliheh Shaban Tameh at malihe.shaban<a rel="noreferrer">@gmail.com</a></p>
Data from: Measurement of stress-induced sympathetic nervous activity using multi-wavelength photoplethysmography
<p>The onset of stress triggers sympathetic arousal (SA), which causes detectable changes to physiological parameters such as heart rate, blood pressure, dilation of the pupils and sweat release. The objective quantification of SA has tremendous potential to prevent and manage psychological disorders. Photoplethysmography (PPG), a non-invasive method to measure skin blood flow changes, has been used to estimate SA indirectly. However, the impact of various wavelengths of the PPG signal has not been investigated for estimating SA. In this study, we explore the feasibility of using various statistical and nonlinear features derived from peak-to-peak (AC) values of PPG signals of different wavelengths (green, blue, infrared and red) to estimate stress-induced changes in SA and compare their performances. The impact of two physical stressors, Cold Pressor and Hand Grip, is studied on 32 healthy individuals. The results show that the nonlinear features are the most promising in detecting stress-induced sympathetic activity. TotalSampEn feature was capable of detecting stress-induced changes in SA for all wavelengths, whereas other features (Petrosian, AvgSampEn) are significant (AUC≥0.8$) only for IR and Red wavelengths. The outcomes of this study can be used to make device design decisions as well as develop stress detection algorithms.</p>
Long Wavelength Array observations of lightning 20210703_001515
<p>Raw data observations of a nearby intra-cloud lightning flash from the Long Wavelength Array (LWA), a VHF radio telescope array in Sevilleta New Mexico. The flash happened on 2021/07/03 at 00:15:15 UT nearly overhead of the array. The dataset contains frequency domain observations from 256 dual polarization antennas in the format provided by the telescope (no post-processing has been done). </p> <p>Code to image the raw observations available at https://github.com/mikestock/lwali</p> <p>An animation of this flash is available at https://vimeo.com/lightninginterferometry/lwa-20210703-001515</p>
Raw ptychography data for manuscript with title 'Structured Illumination Ptychography and At-wavelength Characterization with an EUV diffuser at 13.5 nm Wavelength'
<p>- Given are the HDF files containing the raw diffraction patterns<br> - Although some meta-data might be available in these files, these might not be correct. The following data were used for reconstruction:<br> wavelength: 13.5 nm<br> distance sample <-> detector: ~29.2 mm<br> sCMOS pixel size: 11 um<br> Number of incoherent modes: 4<br> Initial probe guess: 9 um<br> For the reconstruction, OPR was used (Although it might have not been necessary for all data. However, to have comparable results it was used for each reconstruction)<br> - For each scenario, there are two data sets to calculate the Fourier ring correlation (FRC)<br> - For the analysis of the diffuser the reconstructed probe of the data set "dp_diffuser_max_dynam_range.hdf5" was used</p> <p>- Data were measured at the Institute of Applied Physics in Jena using a Fiber Laser driven High-order harmonic source</p> <p>Please contact me (wilhelm.eschen@uni-jena.de) for additional support.</p>
Data from: Measurement of stress-induced sympathetic nervous activity using multi-wavelength photoplethysmography
Open the record for dataset details and reuse information.
Inferring Mimas' spatial distribution of tidal heating from its long-wavelength topography
Open the record for dataset details and reuse information.
Bidirectional Electro-Optic Wavelength Conversion in the Quantum Ground State
<p>This dataset comprises all data shown in the plots of the main part of the submitted article "Bidirectional Electro-Optic Wavelength Conversion in the Quantum Ground State". Additional raw data are available from the corresponding author on reasonable request.</p>
Data from: Hybrid Integration of Silicon Photonic Devices on Lithium Niobate for Optomechanical Wavelength Conversion
<p>Source data for Figures.</p>
High average power parametric wavelength conversion at 3.31–3.48 μm in MgO:PPLN
<p>Open access data set for manuscript "High average power parametric wavelength conversion at 3.31–3.48 μm in MgO:PPLN" published in Optics Express, Advanced Solid-State Lasers 2016 Special Issue, Vol 25, No 4 (2017) .</p>
Wavelength-division multiplexing optical Ising simulator enabling fully programmable spin couplings and external magnetic fields
<p>Recently various physical systems have been proposed for modeling Ising spin Hamiltonians appealing to solve combinatorial optimization problems with remarkable performance. However, how to implement arbitrary spin-spin interactions is a critical and challenging problem in various kinds of unconventional Ising machines. Here we propose a general gauge transformation scheme to enable arbitrary spin-spin interactions and external magnetic fields as well, by decomposing an Ising Hamiltonian into multiple Mattis-type interactions. Based on this scheme, a wavelength-division multiplexing spatial photonic Ising machine (SPIM) is developed to show the programmable capability of general spin coupling interactions. We exploit the wavelength-division multiplexing SPIM to simulate three spin systems: pm J models, Sherrington-Kirkpatrick models, and only locally connected J1/J2 models and observe the phase transitions among the spin-glass, the ferromagnetic, the paramagnetic and the stripe-antiferromagnetic phases. We also demonstrate the ground state search for solving the Max-Cut problem with the wavelength-division multiplexing SPIM. These results promise the realization of ultrafast-speed and high-power-efficiency Boltzmann sampling of a generalized large-scale Ising model.</p>
Datasets for "Ultra-narrow inhomogeneous spectral distribution of telecom-wavelength vanadium centres in isotopically-enriched silicon carbide"
<p>Datasets supporting the paper: "Ultra-narrow inhomogeneous spectral distribution of telecom-wavelength vanadium centres in isotopically-enriched silicon carbide" by P. Cilibrizzi et al.</p><p> </p><p>The files are named as date_time_+"PLE_scan_"+frqInitial_polarisation_frqEnd_signal. For example, the file "2022-12-20_17_07_PLE_scan_234420059_MHz_sigma_P_234419877_MHz_X" is taken on teh 20th of December 2022, starting at 17:07pm. The wavelength of the excitation laser is measured by the wavemeter at the beginning of data acquisition to be 234,420,059 MHz. At the end of the map, the laser wavelength is 234,419,877 MHz. The quantity stored in the file is "X", corresponding to the values of the x-axis for the spatial scan.</p><p>Possible quantities are<br>X: values of the x-axis for the spatial scan (in microns)<br>Y: values of the y-axis for the spatial scan (in microns)<br>Z: number of photon counts</p><p> </p>
Dataset of paper "Wavelength synergistic effects in continuous flow-through water disinfection systems"
<p>Dataset of paper "Wavelength synergistic effects in continuous flow-through water disinfection systems"</p>
Data accompanying the paper "Multi-wavelength Raman microscopy of nickel-based electron transport in cable bacteria"
<p>Data accompanying the paper "Resonance Raman microscopy of nickel-based electron transport in cable bacteria"</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.
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.