We propose a methodological tool for examining the layout and revealing the concealed characteristics of urbanwater supply systems (WSS). For this purpose,we use underground images obtained with ground penetrating radar (GPR) as a method that does not alter the system conditions and environmental characteristics (non-destructive methods). The study focuses on wave amplitude and uses intensive m...

OBJECTIVE Atherosclerotic plaque development in the arterial wall is the result of complex interaction between the wall's endothelial layer and blood hemodynamics. However, the interaction between hemodynamic parameters and inflammation in plaque evolution is not yet fully understood. The aim of the present study was to investigate the relation between wall shear stress (WSS) and vessel wall in...

1 ABSTRACT Arteriovenous fistula (AVF) maturation failure is mainly due to venous stenosis characterized by significant amount of intima-media thickening (IMT). Although hemodynamic endpoints are believed to play a crucial role in pathogenesis of venous stenosis, the exact mechanism behind this is unclear. Our hypothesis is that longitudinal (temporal) changes of hemodynamic parameters, specifi...

BACKGROUND AND PURPOSE Arteriovenous malformations have a high lifetime risk of hemorrhage; however, treatment carries a significant risk of morbidity and mortality, including permanent neurologic sequelae. WSS and other hemodynamic parameters are altered in patients with symptomatic AVMs, and analysis of hemodynamics may have value in stratifying patients into different risk groups. In this st...

PURPOSE Low wall shear stress (WSS) and high oscillatory shear index (OSI) influence plaque formation, yet little is known about their role in progression/regression of established plaques because of lack of practical means to calculate them in individual patients. Our aim was to use computational fluid dynamics (CFD) models of patients with carotid plaque undergoing statin treatment to calcula...

BACKGROUND Hemodynamics may play a role contributing to the progression of bicuspid aortic valve (BAV) aortopathy. This study measured the impact of BAV on the distribution of regional aortic wall shear stress (WSS) compared with control cohorts. METHODS AND RESULTS Local WSS distribution was measured in the thoracic aorta of 60 subjects using 4-dimensional (4D) flow-sensitive magnetic resona...

This article focuses on the arguments used to support private sector participation (PSP) in the provision of water and sanitation services (WSS) since the 1980s. It addresses the following questions: what was the historical evidence informing the claim that promoting PSP would be the best instrument for reducing water poverty? What are the principles that provided the foundation for this claim?...

Recently discussed topological materials Weyl-semimetals (WSs) combine both: high electron mobility comparable with graphene and unique protection of Dirac points. We present novel results related to electromagnetic field propagation through WSs. It is predicted that transmission the normally incident polarized wave (EMW) magnetic WS strongly depends on orientation polarization respect a gyrati...

Woodhouse-Sakati syndrome (WSS, MIM 241080) is a rare neuroendocrine disease characterized by hair loss, hypogonadism, diabetes, hearing and extrapyramidal syndrome, usually caused mutations in the DCAF17 gene as an inherited disease. plays important role mammalian gonadal development infertility. So far, there have been no WSS reports China. The patient introduced this case from consanguineous...

Aortic aneurysm is associated with aberrant blood flow and wall shear stress (WSS). This can be studied by coupling magnetic resonance imaging (MRI) computational fluid dynamics (CFD). For patient-specific simulations, extra attention should given to the variation in segmentation of MRI data-set its effect on WSS. We performed CFD simulations aorta for ten different volunteers provided correspo...