نتایج جستجو برای: defect

تعداد نتایج: 95186  

اسکندری, دکتر معصومه , طوماریان, دکتر لیدا,

ABSTRACT: Excess uptake of fluoride during tooth development can cause developmental defect of enamel that has not beautiful appearance. Fluoride uptake is mainly from drinkink water and a few percent from foodstuffs. At the time of toothbrushing with fluoride dentifrice by young children, toothpaste can be swallowed , and average of fluoride ingestion is 0.3-0.5 mg in each brushing . This e...

M. Ilkhani M. Mirzaei

We have performed density functional theory (DFT) calculations to investigate the properties of defect in arepresentative armchair model of silicon nanotubes (SiNTs). To this aim, the structures of pristine and defective(5,5) SiNTs have been optimized and the properties such as bond lengths, total energies, binding energies,.formation energies, gap energies, and dipole moments have been evaluat...

Synthesis of ZnO nanostructures films by a co-precipitation followed by the deposition processed onto a glass substrate by spin-coating technique was carried out. The effect of annealing temperatures (from 250 to 325 °C for 30 min) on the structural and optical properties of the ZnO films have been investigated. The structural studies reveal that ZnO films are polycrystalline with hexagonal wur...

اسدنیا فرد جهرمی, مرضیه, بنانج, علیرضا,

In present study, the effect of different defect layer refractive indices and thicknesses on group velocity has been studied in one-dimensional photonic crystal. It is found that the increase of refractive index, number of defects and defect layer thickness will induce the decrease of group velocity. Taking advantage of these results, a novel technique has been introduced to tune and control th...

2009
FRANZ-VIKTOR KUHLMANN Hans Hahn

We give an introduction to the valuation theoretical phenomenon of “defect”, also known as “ramification deficiency”. We describe the role it plays in deep open problems in positive characteristic: local uniformization (the local form of resolution of singularities), the model theory of valued fields, the structure theory of valued function fields. We give several examples of algebraic extensio...

Ahmad Oryan, Amin Bigham-Sadegh, Iraj Karimi, Mansour Dowlat abadi

Objective- To evaluate the role of greater omentum incorporation of coral in healing of the long bone defect in dog model. Design- Experimental in-vivo study. Animals- Sixteen adult mongrel male dogs weighing 26.2±2.5 kg, free of evident infectious or parasitic illnesses were used in this study. Procedures- The operative procedure was undertaken under general anesthesia. Radial bone was expo...

ژورنال: حدیث پژوهی 2012

“Addition and Detraction” in narrations, in the sense of adding or detracting something from them, is one of the defects which has found its way into hadith and to identify and pay attention to its undesirable consequences need a comprehensive research. Scholars of hadith have always paid attention to this defect and believe one of the preliminary steps in using hadith is to purify hadith from ...

Closure of donor site of the flap has special problems. Reduction of this site will decrease the morbidity of operation. In this study, we present our experience in donor site size reduction. METHODS Between 2006 and 2008, 15 patients with skin and soft tissue defects underwent operation. In all patients, coverage of defect was performed with various flaps. Substratum horizontal mat-tress sut...

Ebrahim, N., Omidbakhsh, F.,

In this paper, the effects of welding parameters involving tool shape, title angle, rotational speed and welding speed on the S-shape defect formation have been investigated. For this purpose friction stir welding process were done on the Al-1085 plates by cylindrical, Triangle and square pins. The welded sections were studied by metallographic, radiography and SEM methods. The results showed t...

Journal: :archives of cardiovascular imaging 0
anita sadeghpour echocardiography research center, rajaie cardiovascular medical and research center, iran university medical science, tehran, ir iran; md, fase, facc, echocardiography research center, rajaie cardiovascular medical and research center, tehran, ir iran. tel: +98-2123922145, fax: +98-2122042026 majid kyavar rajaie cardiovascular medical and research center, iran university medical science, tehran, ir iran mohammad ali yousefnia rajaie cardiovascular medical and research center, iran university medical science, tehran, ir iran soheila chamanian mashhad university medical sciences, mashhad, ir iran zahra khajali rajaie cardiovascular medical and research center, iran university medical science, tehran, ir iran zahra alizadeh sani rajaie cardiovascular medical and research center, iran university medical science, tehran, ir iran

abstract hypoplastic right ventricular is a rare congenital heart disease. a few cases have been reported. we presented a case with hypoplastic right ventricular and multiple associated anomaly (ventricular septal defect, atrial septal defect and pulmonary stenosis) in whom the main concern was whether biventricular repair or fontan type surgery would be the optimal management in this patient. ...

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