نتایج جستجو برای: defect principle

تعداد نتایج: 246899  

2016
Ru-Lin Huang Eiji Kobayashi Kai Liu Qingfeng Li

Large bone defect treatment represents a great challenge due to the difficulty of functional and esthetic reconstruction. Tissue-engineered bone grafts created by in vitro manipulation of bioscaffolds, seed cells, and growth factors have been considered potential treatments for bone defect reconstruction. However, a significant gap remains between experimental successes and clinical translation...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده مهندسی برق و کامپیوتر 1389

در این پایان نامه، رفتار استاتیک ساختارهای آرایه ای پادهدایت vcsel، شبیه سازی و آنالیز شده است. برای تحلیل مشخصه های نوری (میدان نزدیک و دور)، گرمایی (توزیع دما) و اکتریکی (چگالی حامل) ساختار، از مدل نسبتاً جامعی که شامل معادلات موج، پخش حامل و انتقال گرما و اثرات متقابل پدیده های نوری، گرمایی و الکتریکی است، استفاده گردیده است. دو گروه از vcselهای آرایه ای پادهدایت، بررسی شده اند: آرای? تزویج ...

Journal: :research in cardiovascular medicine 0
maziar gholampour-dehaki heart valve disease research center, rajaie cardiovascular medical and research center, iran university of medical sciences, tehran, ir iran asghar zareh heart valve disease research center, rajaie cardiovascular medical and research center, iran university of medical sciences, tehran, ir iran solmaz babaki heart valve disease research center, rajaie cardiovascular medical and research center, iran university of medical sciences, tehran, ir iran; department of cardiology, ludmillenstift hospital, ludmillenstraße, meppen, germany hoda javadikasgari heart valve disease research center, rajaie cardiovascular medical and research center, iran university of medical sciences, tehran, ir iran; department of thoracic and cardiovascular surgery, cleveland clinic foundation, cleveland, ohio, usa; heart valve disease research center, rajaie cardiovascular medical and research center, vali-asr st., niayesh blvd, p. o. box: 1996911151, tehran, ir iran. tel: +1-6822192494

patients and methods previously recorded data of 231 patients who underwent surgical closure of vsd between january 2009 and january 2012 at the rajaie cardiovascular medical and research center were retrospectively reviewed. vsd surgical repair was performed using continues suturing technique in group a patients (n = 163, 70.6%) and interrupted suturing technique in group b patients (n = 68, 2...

2006

allows us to do a " 10x " on Root Cause Analysis (RCA). It is a 10x in terms of the time it takes to perform root cause analysis and a 10x in terms of the coverage on the defect stream. These productivity enhancements are achieved by raising the level of abstraction and systematizing the analysis methodology. The impact of this productivity boost is far-reaching in its business impact with repo...

Journal: :the journal of tehran university heart center 0
bagher nikyar gorgan congenital malformations research center, golestan university of medical sciences, gorgan, iran. maliheh sedehi gorgan congenital malformations research center, golestan university of medical sciences, gorgan, iran. mostafa qorbani department of public health, alborz university of medical sciences, karaj, iran and non-communicable diseases research center, endocrinology and metabolism research insti- tute, tehran university of medical sciences, tehran, iran. arash nikyar cranfield university, london, england. mohammadjafar golalipour gorgan congenital malformations research center, golestan university of medical sciences, gorgan, iran.

background: congenital heart disease (chd) is the most common congenital anomaly in newborns. this study was performed to determine the live birth incidence of chd by ethnicity and sex in gorgan, northern iran. methods: in this longitudinal, hospital-based study, 18162 live births in dezyani hospital in gorgan, north of iran, were screened for chd, from 2007 through 2009. clinical examination, ...

Journal: :the journal of tehran university heart center 0
ali akbar zeinaloo children’s medical center, tehran university of medical sciences, tehran, iran. seyyed mahmoud meraji shaheed rajayee cardiovascular center, iran university of medical sciences, tehran, iran. keyhan sayadpour zanjani children’s medical center, tehran university of medical sciences, tehran, iran. mohammad reza mirzaaghayan imam khomeini hospital complex, tehran university of medical sciences, tehran, iran.

background: closure of patent ductus arteriosus (pda), ventricular septal defect (vsd) and atrial septal defect (asd) can be done surgically or by device. this study was designed to compare the total cost of surgical or device closures of pda, asd or vsd for iranian patients. methods: this is a cross-sectional study, conducted from january 1, 2005 until january 1, 2006 in two large heart center...

Journal: :the journal of tehran university heart center 0
ramin baghaei tehrani rajaee heart center, iran university of medical sciences, tehran, iran. alireza rostami rajaee heart center, iran university of medical sciences, tehran, iran. hosein ali basiri rajaee heart center, iran university of medical sciences, tehran, iran. hojatollah mortezaiian rajaee heart center, iran university of medical sciences, tehran, iran.

this is a case presentation of a 26-year-old woman with a moderate-sized atrial septal secundum defect (17mm) who underwent catheterism, during which an amplatzer septal occluder number 26 was inserted successfully. on the second postoperative day, she deteriorated and a clinical examination showed a typical tamponade. after a percutaneous aspiration of the pericardial cavity and transient impr...

Journal: :Electronics Letters 2023

This study proposes a scheme for high-order subharmonic injection locking in tunnel diode oscillator lattice loop. The loop supports rotary pulse resulting from mutual synchronization between the component oscillators. A topological defect form of dislocation is observed to rotate within direction opposite that background pulse. mutually synchronized with In addition, velocity considerably slow...

Journal: :Journal of physics 2023

Abstract In the present study, we have analyzed electronic properties and formation energy of SbS 2 monolayer with Frenkel Schottky defects using first principle calculations. The variation in properties, such as band structure Density States (DOS) for defects, has been observed this paper. Monolayer show metallic behaviour, whereas defect shows a small direct indirect bandgap 24 meV 8 meV, res...

Journal: :Heart 1999
M Vogel F Berger A Kramer V Alexi-Meshkishvili P E Lange

OBJECTIVE To examine the incidence of raised pulmonary artery pressure and resistance in adults with isolated atrial septal defect within the oval fossa (so called secundum defect) or sinus venosus defect. DESIGN A historical, retrospective, unrandomised study. SETTING A tertiary referral centre. METHODS Cardiac catheterisation was performed in all patients, with measurement of pulmonary ...

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