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277 results for “infrared spectroscopy”
Fig. 3 in Detailed characterization of Pinus ponderosa sporopollenin by infrared spectroscopy
Fig. 3. Model compounds used in the infrared characterization of sporopollenin.
Evaluation of Feeding Intolerance in Premature Infants Using Near Infrared Spectroscopy
ClinicalTrials.gov study NCT02534090. IPD Sharing: Not stated. Countries: 0. Publications: 13.
The Relationship Among rSO2, MAP, et al by Near-Infrared Spectroscopy in Endovascular Neurosurgery
ClinicalTrials.gov study NCT02356133. IPD Sharing: Not stated. Countries: 0. Publications: 1.
Evaluation of a Combined Near Infrared Spectroscopy (NIRS) and Intravascular Ultrasound (IVUS) Catheter for Detection of Lipid Rich Plaque
ClinicalTrials.gov study NCT01506960. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Significance of Ultrasound Combined with Near-Infrared Spectroscopy in Monitoring Transfusion-Associated Intestinal Injury in Extremely Preterm Infants: a Study Protocol for a Prospective, Observation
ClinicalTrials.gov study NCT06857812. IPD Sharing: YES. Countries: 0. Publications: 0.
Transcranial Near-Infrared Light in Healthy Subjects: a Cerebral Blood Flow Study With Diffuse Correlation Spectroscopy
ClinicalTrials.gov study NCT03740152. IPD Sharing: NO. Countries: 1. Publications: 0.
Using Near-Infrared Spectroscopy Devices to Assess Myocardial and Visceral Perfusion During Complex Congenital Cardiac Surgery
ClinicalTrials.gov study NCT07361523. IPD Sharing: NO. Countries: 0. Publications: 16.
Randomized-controlled Trial of a Combined vs. Conventional Percutaneous Intervention for Near-Infrared Spectroscopy Defined High-Risk Native Coronary Artery Lesions
ClinicalTrials.gov study NCT02601664. IPD Sharing: Not stated. Countries: 0. Publications: 5.
Data from: Near-infrared spectroscopy for metabolite quantification and species identification
Open the record for dataset details and reuse information.
Data from: Characterizing aeroallergens by infrared spectroscopy of fungal spores and pollen
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Data from: Non-destructive geographical traceability of sea cucumber (Apostichopus japonicus) using near infrared spectroscopy combined with chemometric methods
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Data from: Toward translating near-infrared spectroscopy oxygen saturation data for the non-invasive prediction of spatial and temporal hemodynamics during exercise
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Data from: Near infrared spectroscopy (NIRS) predicts non-structural carbohydrate concentrations in different tissue types of a broad range of tree species
1. The allocation of non-structural carbohydrates (NSCs) to reserves constitutes an important physiological mechanism associated with tree growth and survival. However, procedures for measuring NSC in plant tissue are expensive and time-consuming. Near-infrared spectroscopy (NIRS) is a high-throughput technology that has the potential to infer the concentration of organic constituents for a large number of samples in a rapid and inexpensive way based on empirical calibrations with chemical analysis. 2. The main objectives of this study were (i) to develop a general NSC concentration calibration that integrates various forms of variation such as tree species and tissue types and (ii) to identify characteristic spectral regions associated with NSC molecules. In total, 180 samples from different tree organs (root, stem, branch, leaf) belonging to 73 tree species from tropical and temperate biomes were analysed. Statistical relationships between NSC concentration and NIRS spectra were assessed using partial least squares regression (PLSR) and a variable selection procedure (competitive adaptive reweighted sampling, CARS), in order to identify key wavelengths. 3. Parsimonious and accurate calibration models were obtained for total NSC (r2 of 0·91, RMSE of 1·34% in external validation), followed by starch (r2 = 0·85 and RMSE = 1·20%) and sugars (r2 = 0·82 and RMSE = 1·10%). Key wavelengths coincided among these models and were mainly located in the 1740–1800, 2100–2300 and 2410–2490 nm spectral regions. 4. This study demonstrates the ability of general calibration model to infer NSC concentrations across species and tissue types in a rapid and cost-effective way. The estimation of NSC in plants using NIRS therefore serves as a tool for functional biodiversity research, in particular for the study of the growth–survival trade-off and its implications in response to changing environmental conditions, including growth limitation and mortality.
Data from: Shining new light on mammalian diving physiology using wearable near-infrared spectroscopy
Investigation of marine mammal dive-by-dive blood distribution and oxygenation has been limited by a lack of non-invasive technology for use in freely diving animals. Here, we developed a non-invasive near-infrared spectroscopy (NIRS) device to measure relative changes in blood volume and haemoglobin oxygenation continuously in the brain and blubber of voluntarily diving harbour seals. Our results show that seals routinely exhibit preparatory peripheral vasoconstriction accompanied by increased cerebral blood volume approximately 15 s before submersion. These anticipatory adjustments confirm that blood redistribution in seals is under some degree of cognitive control that precedes the mammalian dive response. Seals also routinely increase cerebral oxygenation at a consistent time during each dive, despite a lack of access to ambient air. We suggest that this frequent and reproducible reoxygenation pattern, without access to ambient air, is underpinned by previously unrecognised changes in cerebral drainage. The ability to track blood volume and oxygenation in different tissues using NIRS will facilitate a more accurate understanding of physiological plasticity in diving animals in an increasingly disturbed and exploited environment.
Fourier Transformed Infrared Spectroscopy in Macular Surgery
ClinicalTrials.gov study NCT03452748. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Near Infrared Spectroscopy (NIRS)
ClinicalTrials.gov study NCT01429324. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Using Infrared Spectroscopy for Diagnosis Severity of Nonalcoholic Fatty Liver Disease
ClinicalTrials.gov study NCT02860884. IPD Sharing: NO. Countries: 1. Publications: 0.
Electro- Hemodynamic Activity in Children: Combined Analysis by Video -EEG Spectroscopy and Near-infrared (NIRS )
ClinicalTrials.gov study NCT02826915. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Optical Monitoring With Near-Infrared Spectroscopy for Spinal Cord Injury Trial
ClinicalTrials.gov study NCT04811235. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Cerebral Oxygenation During Vojta Therapy in Healthy Adults Using Near-infrared Spectroscopy
ClinicalTrials.gov study NCT05170906. IPD Sharing: NO. Countries: 1. Publications: 0.
ScienceDex guides
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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.