نتایج جستجو برای: rotational failure

تعداد نتایج: 402049  

2003
OLEG L. POLYANSKY JONATHAN TENNYSON

The superiority of the convergence behavior of effective rotational Hamiltonians expressed in terms of Pade approximants over more conventional power series Hamiltonians is well known. For diatomics it is suggested that the failure of the conventional expansions is due to singularities in the complex Jplane. This theory is supported by numerical calculations on rotationally excited Ha with both...

Journal: :J. Signal and Information Processing 2011
Scot I. McNeill

Current methods of order tracking, such as synchronous resampling, Gabor filtering, and Vold-Kalman filtering have undesirable traits. Each method has two or more of the following deficiencies: requires measurement or estimate of rotational speed over time, failure to isolate the contribution of crossing orders in the vicinity of the crossing time, large computational expense, end effects. In t...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی امیرکبیر(پلی تکنیک تهران) - دانشکده مهندسی برق 1386

یکی از دلایل اضافه ولتاژ، برخورد صاعقه به خط انتقال می باشد. صاعقه در صورت برخورد به سیم گارد و برخورد به فاز می تواند ایجاد خطر نماید. با برخورد صاعقه به سیم گارد، اضافه ولتاژ کمتری شاهد خواهیم بود. ازاینرو استفاده از سیم گارد در خطوط انتقال الزامی می باشد. اگر برخورد به سیم گارد باعث ایجاد back flashover شود، سیستم را دچار تنش خواهد کرد. در حالتی دیگر نیز اگر صاعقه به فاز برخورد نماید (sheild...

Journal: :International journal of radiation oncology, biology, physics 2012
Junqing Wu Dan Ruan Byungchul Cho Amit Sawant Jay Petersen Laurence J Newell Herbert Cattell Paul J Keall

PURPOSE Intrafraction rotation of more than 45° and 25° has been observed for lung and prostate tumors, respectively. Such rotation is not routinely adapted to during current radiotherapy, which may compromise tumor dose coverage. The aim of the study was to investigate the geometric and dosimetric performance of an electromagnetically guided real-time dynamic multileaf collimator (DMLC) tracki...

Journal: :Forensic science international 2005
Faris A Bandak

Traumatic infant shaking has been associated with the shaken baby syndrome (SBS) diagnosis without verification of the operative mechanisms of injury. Intensities for SBS have been expressed only in qualitative, unsubstantiated terms usually referring to acceleration/deceleration rotational injury and relating to falls from great heights onto hard surfaces or from severe motor vehicle crashes. ...

Journal: :The Journal of bone and joint surgery. British volume 2002
W Schneider N Aigner O Pinggera K Knahr

We have compared different types of intertrochanteric osteotomy for avascular necrosis of the hip and evaluated their performance in the light of improving outcome after total hip arthroplasty (THA). During a period of 14 years we performed 63 flexion osteotomies (partly combined with varus or valgus displacement), 29 rotational osteotomies, 13 varus osteotomies, eight medialising osteotomies a...

Journal: :Thin-walled Structures 2021

This paper aims to characterise the mechanical behaviour of folded timber sandwich structures developed using integral rotational press-fit (RPF) joints. Six arches are tested failure, under three load cases designed induce different sagging and hogging conditions at internal Experimental testing showed failures occurring joint locations with maximum moment, two failure types observed as FRP te...

Introduction: Pediatrics assistants should have the same training program. Shahid Beheshti University of medical sciences has seven training hospital, however, there are no similar specialized departments in all of these hospitals. Therefore, it is necessary to develop identical rotational style in order to train assistants according curriculum. The aim of this study was to investigate and comp...

Rezaei Ashtiani, H. , Shafiee, M. ,

Friction stir spot welding (FSSW) is a type of solid state welding that is used in the connection of small pieces and light metals such as aluminum alloy especially. The technical problem during melting of aluminum alloys is one of the most important reasons for developing application of friction stir welding for aluminum alloys. In this research, the effects of important processing parameters ...

Journal: :the archives of bone and joint surgery 0
mahmoud jabalameli shafa orthopedic hospital, iran university of medical sciences, tehran, iran amin moradi tabriz shohada hospital, tabriz university of medical sciences, tabriz, iran abolfazl bagherifard shafa orthopedic hospital, iran university of medical sciences, tehran, iran mehran radi shafa orthopedic hospital, iran university of medical sciences, tehran, iran tahmineh mokhtari tehran university of medical sciences, tehran, iran

background: evaluating the landmarks for rotation of the distal femur is a challenge for orthopedic surgeons. although the posterior femoral condyle axis is a good landmark for surgeons, the surgical transepicondylar axis may be a better option with the help of preoperative ct scanning. the purpose of this study was to ascertain relationships among the axes’ guiding distal femur rotational alig...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید