نتایج جستجو برای: wedge factor

تعداد نتایج: 855483  

Journal: :Water 2023

In this study, we conducted small-scale physical modeling tests to consider the impact of infiltration rainfall in order investigate processes involved wedge slope deformation and failure. The experiments were under controlled conditions intersection angle half-wedge angle. observations obtained during each stage failure used explain how gravity varies on slopes infer influences results indicat...

2017
Jun-Ho Kim Hyun-Jung Kim Dae-Hee Lee

BACKGROUND Theoretical considerations suggest that leg length increases after opening wedge high tibial osteotomy (HTO) and decreases after closing wedge HTO; however, in vivo studies have yielded conflicting results. This meta-analysis therefore assessed changes in leg length after opening wedge and closing wedge HTO. METHODS All studies comparing pre- and postoperative leg length in patient...

2014
Francisco Casesnoves

Purpose: Static wedge filters (WF) are commonly used in radiation therapy, forward and/or inverse planning. We calculated the exact 2D/3D geometrical pathway of the photon-beam through the usual alloy WF, in order to get a better dose related to the beam intensity attenuation factor(s), after the beam has passed through the WF. The objective was to provide general formulation into the Anisotrop...

2012
Jörn Rathke Ulrich Müller Johannes Konnerth Gerhard Sinn

This paper is the third part of a study dealing with the mechanical and fracture mechanical characterization of Medium Density Fiberboards (MDF). In the first part, an analysis of internal bond strength testing was performed and in the second part MDF was analyzed by means of the wedge splitting experiment; this part deals with the double cantilever I beam test, which is designed for measuring ...

H. Gholamhoseinian, M. Momennezhad, M.T. Bahreyni Toosi, R. Sadeghi, Sh. Nasseri,

Background: The presence of a wedge filter in the beam trajectory can modify the beam quality and cause some changes in the dosimetry parameters which are usually difficult to be measured directly and accurately. Material and Methods: In this study the MCNP-4C Monte Carlo code was used to simulate the 9 MV photon beam generated by a linear accelerator. Upon getting a good agreement bet...

Journal: :the journal of tehran university heart center 0
afsoon fazlinezhad ghaem hospital, mashhad university of medical sciences, mashhad, iran. farveh vakilian ghaem hospital, mashhad university of medical sciences, mashhad, iran. homa falsoleiman ghaem hospital, mashhad university of medical sciences, mashhad, iran. mashallah dehghani ghaem hospital, mashhad university of medical sciences, mashhad, iran.

background: considering suggested formula in the references and pcwp measured by catheterism, in the present study the relation between pulmonary capillary wedge pressure (pcwp) measured the flow velocity of mitral valve and mitral annulus motion through tissue doppler imaging is evaluated methods: 52 cases of severe ms were admitted for balloon mitral valvolotomy (bmv) are included in this stu...

Journal: :international journal of maritime technology 0
amir nikseresht department of mechanical & aerospace engineering, shiraz university of technology, shiraz, iran hossein ghazizade-ahsaee department of mechanical & aerospace engineering, shiraz university of technology, shiraz, iran

in this research, numerical simulation of a symmetric impact of a 2-d wedge, considering dynamic equations in two-phase flow is taken into account. the two-phase flow around the wedge is solved based on finite volume method and volume of fluid (vof) scheme. the dynamic mesh model is used to simulate dynamic motion of the wedge, thereby the effects of different dynamic meshes in both structured ...

Journal: :The European respiratory journal 2015
Marcello C Ambrogi Olivia Fanucchi Paolo Dini Franca Melfi Federico Davini Marco Lucchi Gabriele Massimetti Alfredo Mussi

The main aim of this study was to compare radiofrequency ablation (RFA) and wedge resection in terms of disease recurrence and survival, as intent-to-treat therapy for stage I nonsmall cell lung cancer (NSCLC) in marginal or non-surgical candidates. 121 high-risk patients, treated for stage I NSCLC with wedge resection (n=59) or RFA (n=62) in a 7-year period, were analysed. Age, sex, comorbidit...

2012
G. A. Papadopoulos

The experimental method of caustics was used for the evaluation of the stress-singularities created by concentrated oblique load applied at the apex of a wedge or on the horizontal straight boundary of a half-plane. The wedge was considered to be elastic, isotropic and under generalized plane stress conditions. According to the method of caustics, the light rays impinging normally at the thin p...

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