نتایج جستجو برای: Defects

تعداد نتایج: 134014  

پایان نامه :وزارت علوم، تحقیقات و فناوری - پژوهشگاه دانشهای بنیادی (مرکز تحقیقات فیزیک نظری و - پژوهشکده علوم نانو 1392

among the low–dimensional allotropes of carbon, nanotubes and graphene have attracted very much attention from nano–science and nanotechnology specialists. they have been proposed as building blocks in nanometer device engineering. however, these structures are not defect–free. in this thesis, we focused on defective carbon nanotubes and graphene, and studied the effect of couple of very common...

Journal: :the journal of tehran university heart center 0
feridoun sabzi imam ali hospital, kermanshah university of medical sciences, kermanshah, iran.

atrial septal defect (asd) is a common congenital anomaly that has low surgical mortality and morbidity. we report a very rare case of a low-lying asd, combined with the drainage of the inferior vena cava and the left superior vena cava into the left atrium. this combination was associated with an unroofed coronary sinus. we also describe an iatrogenic surgical diversion of the inferior vena ca...

Journal: :تحقیقات علوم رفتاری 0
فرزانه مومنی حسین مولوی مختار ملک پور شعله امیری fatemeh momeni mokhtar malekpour

aim and background: the aim of present study was to compare attachment styles between young adults with visual or auditory defects and normal groups in isfahan city. methods and materials: the present study assessed by ex-post facto method. the statistical society of the study is including of all young adults with visual, auditory defects and normal people.80 young adults with visual defects (4...

Journal: :caspian journal of pediatrics 0
mohsen akhavan sepahi pediatrics medicine research center, qom university of medical sciences, qom, ir iran. zahra movahedi pediatrics medicine research center alireza sadati department of pediatrics, hazrat maasomeh hospital mohammad reza shokrollahi pediatrics medicine research center

introduction: cloacal malformation is an extremely rare fetal pathological condition but an important anomaly that presents as a variety of defects. it predominantly affects females, with prevalence of 1 in 50,000 births. prenatal ultrasonography usually showed oligohydramnios and the fetus having a large cystic mass in the lower abdomen with a single septum, bilateral hydronephrosis, ambiguous...

Journal: :journal of dental research, dental clinics, dental prospects 0
naser asl aminabadi faculty of dentistry, tabriz university of medical sciences sina ghertasi oskouei faculty of dentistry, tabriz university of medical sciences firoz pouralibaba faculty of dentistry, tabriz university of medical sciences zahra jamali faculty of dentistry, tabriz university of medical sciences farzaneh pakdel faculty of dentistry, tabriz university of medical sciences

background and aims. the objectives of the present study were to investigate the prevalence and the position of enamel defects of primary teeth and hence to estimate the approximate time of an insult. material and methods. 121 children aged 3 to 5 years were included in the study. the modified developmental defects of enamel index was used to diagnose and classify the defects. the defects were ...

Journal: :archives of cardiovascular imaging 0
sedat altay department of radiology, ataturk research and education hospital, katip celebi university, izmir, turkey; department of radiology, ataturk research and education hospital, katip celebi university, izmir, turkey. tel: +90-5332435440, fax: +90-2322431530 canan altay department of radiology, faculty of medicine, dokuz eylul university, izmir, turkey nezahat erdogan department of radiology, ataturk research and education hospital, katip celebi university, izmir, turkey sebnem karasu department of radiology, ataturk research and education hospital, katip celebi university, izmir, turkey orhan oyar department of radiology, ataturk research and education hospital, katip celebi university, izmir, turkey

the most frequent congenital heart defects in the neonatal period are ventricular septal defects. ventricular septal aneurysms can rarely develop from an interventricular septal (ivs) defect in adults. we describe a 47-year-old man with an aneurysm in the ivs growing towards the right ventricle, which was confirmed by cardiac computed tomographic angiography and was missed by echocardiography.

Journal: :research in cardiovascular medicine 0
hojat mortezaeian cardiovascular intervention research center, rajaie cardiovascular medical and research center, iran university of medical sciences, tehran, ir iran mahmoud meraji rajaie cardiovascular medical and research center, iran university of medical sciences, tehran, ir iran mohammadreza naghibi rajaie cardiovascular medical and research center, iran university of medical sciences, tehran, ir iran; rajaie cardiovascular medical and research center, vali-asr st., niayesh blvd, tehran, ir iran. tel: +98-2123922179, fax: +98-2122042026 avisa tabib heart valve disease research center, rajaie cardiovascular medical and research center, iran university of medical sciences, tehran, ir iran hasan birjandi cardiovascular intervention research center, rajaie cardiovascular medical and research center, iran university of medical sciences, tehran, ir iran ahmad vesal cardiovascular intervention research center, rajaie cardiovascular medical and research center, iran university of medical sciences, tehran, ir iran

conclusions the right ventricular outflow tract palliation in children with cyanotic chd leads to long-term favorable outcome regarding improvement in oxygen saturation, increase in z score of both left and right pulmonary arteries and also considerable decrease in spell. also, death and complications are rare following rvot palliation. background the right ventricular outflow tract (rvot) pall...

Journal: :iranian journal of medical sciences 0
alwaleed al-dairy department of cardiovascular surgery, rajaie cardiovascular medical and research center, iran university of medical sciences, tehran, iran yousef rezaei heart valve disease research center, rajaie cardiovascular medical and research center, iran university of medical sciences, tehran, iran maziar gholampour dehaki department of cardiovascular surgery, rajaie cardiovascular medical and research center, iran university of medical sciences, tehran, iran anita sadeghpour echocardiography research center, rajaie cardiovascular medical and research center, iran university of medical sciences, tehran, iran zia totonchi department of cardiac anesthesia, rajaie cardiovascular medical and research center, iran university of medical sciences, tehran, iran hamidreza pouraliakbar department of radiology, rajaie cardiovascular medical and research center, iran university of medical sciences, tehran, iran

anomalous origin of the left coronary artery from the pulmonary artery (alcapa) is a rare congenital cardiac malformation. we report three cases of alcapa who survived to adulthood. the first case was a 51-year-old woman who complained of typical chest pain that was diagnosed with alcapa using cardiac catheterization and coronary computed tomographic angiography (cta). the second case was a 30-...

Journal: :acta medica iranica 0
khosrow hashemzadeh department of cardiovascular surgery, cardiovascular research center, shahid madani hospital, tabriz university of medical sciences, tabriz, iran. shahryar hashemzadeh department of general and thoracic surgery, imam reza hospital, tabriz university of medical sciences, tabriz, iran.

the purpose of this study was to evaluate the early and late outcome after total correction of tetralogy of fallot (tof) in 101 consecutive patients with a mean age of 8.23 ± 4.90 years underwent repair of surgery at one institution between 1995 and 2006. forty two patients had initial palliative operations. a transannular patch was inserted in 60 (58.5%) patients. risk factors for operative mo...

Journal: :the journal of tehran university heart center 0
mohammad sahebjam tehran heart center, tehran university of medical sciences, tehran, iran. reyhaneh zavar tehran heart center, tehran university of medical sciences, tehran, iran. masoumeh lotfi-tokaldany tehran heart center, tehran university of medical sciences, tehran, iran. hakimeh sadeghian tehran heart center, tehran university of medical sciences, tehran, iran. arezou zoroufian tehran heart center, tehran university of medical sciences, tehran, iran.

background: given the dearth of data in the existing literature on the size and morphologic variability of secundum-type atrial-septal defect (asd-ii) in adult patients, we aimed to address this issue in a series of consecutive adult patients evaluated by transesophageal echocardiography (tee). methods: a total of 50 patients (68.0% female) with isolated asd-ii underwent tee for the evaluation ...

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