Results 1 to 10 of about 20,303 (220)

A Linear Regression of Differential PWV Calibration Model to Improve the Accuracy of MODIS NIR All-Weather PWV Products Based on Ground-Based GPS PWV Data

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
Precipitable water vapor (PWV) products derived from the near-infrared (NIR) channels of the Moderate Resolution Imaging Spectroradiometer (MODIS) instruments, onboard Aqua and Terra satellites, were calibrated using a linear differential PWV (LinearDP ...
George Zhizhao Liu, Jiafei Xu
exaly   +4 more sources

COMPARISON OF GNSS PWV AND ERA5-DERIVED PWV BASED ON GNSS PWV IN HONG KONG, CHINA [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
Water vapor is the most abundant atmospheric gas, and it plays a vital role in the evolution of the Earth's climate. Precipitable water vapor (PWV) is a key factor in monitoring the climate and hydrological cycle.
Z. W. Li   +3 more
doaj   +3 more sources

Comparison of Different Thoracic Aortic Wall Characteristics for Assessment of Disease Activity in Takayasu Arteritis: A Quantitative Study with 3.0 T Magnetic Resonance Imaging

open access: yesReviews in Cardiovascular Medicine, 2022
Background: Determination of disease activity in Takayasu arteritis (TAK) is crucial for clinical management but challenging. The value of different magnetic resonance imaging (MRI) characteristics for the assessment of disease activity remains unclear ...
Nan Zhang   +6 more
doaj   +1 more source

Evaluation of Vascular Involvement in Children with Celiac Disease

open access: yesJournal of Pediatric Research, 2023
Aim:Celiac disease is associated with an increased risk of cardiovascular disease due to inflammation and autoimmunity involved in its pathophysiology. We aimed to evaluate vascular involvement in children with celiac disease based on their augmentation ...
Ezgi Kıran Taşcı   +8 more
doaj   +1 more source

Comparison of convective cloud characteristics during two torrential rain events in Shenyang based on Himawari-8 satellite data

open access: yes暴雨灾害, 2020
Using NCEP FNL reanalysis data, GNSS retrieved water vapor, wind profile radar products and the national intelligent grid real-life live fusion analysis data, we have conducted a comparative analysis of the convective cloud characteristics during two ...
Lei YANG   +4 more
doaj   +1 more source

Modulation of Arterial Stiffness Gradient by Acute Administration of Nitroglycerin

open access: yesFrontiers in Physiology, 2021
Background: Physiologically, the aorta is less stiff than peripheral conductive arteries, creating an arterial stiffness gradient, protecting microcirculation from high pulsatile pressure.
Catherine Fortier   +13 more
doaj   +1 more source

Evaluation and Calibration of MODIS Near-Infrared Precipitable Water Vapor over China Using GNSS Observations and ERA-5 Reanalysis Dataset

open access: yesRemote Sensing, 2021
Water vapor is one of the most important parameters in climatic studies. MODerate-resolution Imaging Spectroradiometer (MODIS) is a key instrument and can provide spatially continuous precipitable water vapor (PWV) products. This study was focused on the
Dantong Zhu   +4 more
doaj   +1 more source

The relationship between the prevalence and complexity of coronary artery disease and aortic stiffness in myocardial infarction patients without ST-segment elevation

open access: yesInternational Journal of the Cardiovascular Academy, 2020
Background: The relationship between elastic properties of the aorta and presence of coronary artery disease (CAD) has been investigated in previous studies. However, the relationship of aortic stiffness (AS) with extent and complexity of CAD in patients
Yildirim Arafat   +2 more
doaj   +1 more source

Measurement of flow-mediated dilatation using near-infrared transmission images of finger blood vessels (Comparison with brachial-ankle pulse wave velocity)

open access: yesNihon Kikai Gakkai ronbunshu, 2017
Arterial endothelial function is known as a factor that correlates with progression of arteriosclerosis. This is measured by flowmediated dilatation (FMD) testing. This test is performed by measuring the brachial artery diameter with an ultrasound system
Satoshi SHIMAWAKI   +2 more
doaj   +1 more source

A Gradient Boosting Decision Tree Based Correction Model for AIRS Infrared Water Vapor Product

open access: yesGeophysical Research Letters, 2023
High‐quality precipitable water vapor (PWV) measurements have an essential role in climate change and weather prediction studies. The Atmospheric Infrared Sounder (AIRS) instrument provides an opportunity to measure PWV at infrared (IR) bands twice daily
Jiafei Xu, Zhizhao Liu
doaj   +1 more source

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