Results 21 to 30 of about 49,517 (240)

A new zenith hydrostatic delay model for real-time retrievals of GNSS-PWV

Atmospheric Measurement Techniques, 2021
. The quality of the zenith hydrostatic delay (ZHD) could significantly affect the accuracy of the zenith wet delay (ZWD) of the Global Navigation Satellite System (GNSS) signal, and from the ZWD precipitable water vapor (PWV) can be obtained. The ZHD is
Longjiang Li, Suqin Wu, Kefei Zhang, Xiaoming Wang, Wang Li, Zhentian Shen, Dantong Zhu, Qimin He, Moufeng Wan   +8 more
semanticscholar   +1 more source

Modulation of Arterial Stiffness Gradient by Acute Administration of Nitroglycerin

Frontiers 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, Catherine Fortier, Catherine Fortier, Charles-Antoine Garneau, Charles-Antoine Garneau, Mathilde Paré, Mathilde Paré, Hasan Obeid, Nadège Côté, Nadège Côté, Karine Duval, Rémi Goupil, Mohsen Agharazii, Mohsen Agharazii   +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

Remote 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, Kefei Zhang, Liu Yang, Suqin Wu, Longjiang Li   +4 more
doaj   +1 more source

Evaluation of Vascular Involvement in Children with Celiac Disease

Journal 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, Sevgin Taner, Eser Doğan, Miray Karakoyun, İpek Kaplan Bulut, Caner Kabasakal, Ertürk Levent, Funda Çetin, Sema Aydoğdu   +8 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

International 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, Mehmet Kucukosmanoglu, Gur Mustafa   +2 more
doaj   +1 more source

Improving GNSS PPP accuracy through WVR PWV augmentation

Journal of Geodesy, 2019
Using 5 months of observations at a Global Navigation Satellite System (GNSS) and a Water Vapor Radiometer (WVR) collocated station at Tongji University, Shanghai, a mid-latitude coastal city in China with high level of water vapor, we analyzed the precipitable water vapor (PWV) from different sources including WVR, GNSS, Numerical Weather Prediction ...
Jungang Wang, Zhizhao Liu
semanticscholar   +3 more sources

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

Geophysical 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

Retrieving Precipitable Water Vapor From Shipborne Multi‐GNSS Observations [PDF]

, 2019
©2019. American Geophysical UnionPrecipitable water vapor (PWV) is an important parameter for climate research and a crucial factor to achieve high accuracy in satellite geodesy and satellite altimetry. Currently Global Navigation Satellite System (GNSS)
Ge, Maorong, Gerland, Sebastian, Ramatschi, Markus, Schuh, Harald, Semmling, Maximilian, Wang, Jungang, Wickert, Jens, Wu, Zhilu, Zus, Florian   +8 more
core   +1 more source

Preliminary results of the FORMOSAT-7 RO-PWV accuracy verifications base on ground-based GNSS-PWV

, 2023
The 28th IUGG General Assembly (IUGG2023) (Berlin 2023)
Yeh, T., Lien, T., Wang, C., Hong, J.
openaire   +2 more sources

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

Nihon 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, Kazuki YOSHIDA, Masataka NAKABAYASHI   +2 more
doaj   +1 more source