نتایج جستجو برای: svi

تعداد نتایج: 771  

Journal: :SIAM Journal on Optimization 2012
Xiaojun Chen Roger J.-B. Wets Yanfang Zhang

Abstract. The stochastic variational inequality (SVI) has been used widely, in engineering and economics, as an effective mathematical model for a number of equilibrium problems involving uncertain data. This paper presents a new expected residual minimization (ERM) formulation for a class of SVI. The objective of the ERM-formulation is Lipschitz continuous and semismooth which helps us guarant...

Journal: :Arzneimittel-Forschung 1992
P Dominiak F Kees D Welzel H Grobecker

To evaluate the therapeutic value of various antihypotensive agents we investigated amezinium (AMZ; CAS 30578-37-1), dihydroergotamine (DHE; CAS 511-12-6), midodrine (MDD; CAS 42794-76-3), and oxilofrine (OXF; CAS 365-26-4) in volunteers during passive orthostasis in a randomized double-blind study against placebo (PCB). Blood pressure, heart rate, and circulating catecholamines were determined...

Journal: :European Journal of Echocardiography 2023

Abstract Funding Acknowledgements Type of funding sources: None. Introduction Measurement left ventricular (LV) stroke volume normalized for the body surface area (SVi) is required in aortic stenosis (AS) to calculate valve (AVA) and determine flow status. However, LV outflow tract most patients hourglass rather than cylindrical, leading a significant overestimation low-flow state AS severity. ...

2013
Chenyang Dai Guofeng Dai Yuelan Wang Mengjie Liu

Objective: SVV is derived from the cardiopulmonary interaction, which is used to predict the responsiveness of cardiac preload guiding fluid therapy in patients under general anesthesia in non-opened chest surgery. From a clinical point of view, it is important to know how well SVV reflects preload and fluid responsiveness during cardiac surgery. This study was undertaken to assess the accuracy...

Journal: :Sustainability 2022

Sludge Volume Index (SVI) is one of the most important operational parameters in an activated sludge process. It difficult to predict SVI because nonlinearity data and variability operation conditions. With complex time-series from Wastewater Treatment Plants (WWTPs), Recurrent Neural Network (RNN) with Explainable Artificial Intelligence was applied interpret prediction result. RNN architectur...

In this work, the performance of organic pollutant removal, membrane fouling and sludge morphology in a submerged membrane bioreactor (MBR) treating sunflower oil refinery wastewater (SORW) containing high oleic content was studied during 52 days’ operation at short values of 18 h and 10 days for hydraulic retention time and sludge retention time, respectively. The removal efficiencies of chemi...

Journal: :Vive 2023

El SVI como problema de salud, también puede tener un impacto económico significativo y sus consecuencias perjudiciales pueden continuar incluso cuando la pandemia haya terminado. Objetivo. Determinar prevalencia causas relacionadas del síndrome visual informático (SVI) entre los estudiantes 12 a 17 años, durante COVID-19. Materiales Métodos. Se realizó una investigación tipo transversal, obser...

Journal: :Bioscience trends 2014
Qiang Fu Feng Zhao Weidong Mi Hong Zhang

The purpose of this study was to investigate the ability of stroke volume variation (SVV) to predict fluid responsiveness in patients undergoing pulmonary lobectomy with one lung ventilation (OLV). Thirty patients intubated with double-lumen tube were scheduled for a pulmonary lobectomy requiring OLV for at least 1 hour under general anesthesia. Hemodynamic variables including heart rate, mean ...

Journal: :The British journal of ophthalmology 2003
I R Ezegwui R E Umeh U F Ezepue

AIM This cross sectional study was undertaken to identify the major causes of childhood severe visual impairment/blindness (SVI/BL) among students in schools for the blind in south eastern Nigeria with a view to offering treatment to those with remediable blindness. METHODS 142 students attending three schools for the blind in the study area were interviewed and examined using the World Healt...

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