نتایج جستجو برای: defect
تعداد نتایج: 95186 فیلتر نتایج به سال:
In this work, the formation of oxygen-vacancy defect in 3d metals-doped TiO2 anatase and rutile structures is first investigated. The systematic calculations of formation energy, crystalline stability, band structure and density of state (DOS) of TiO2 samples of anatase and rutile doped with 3d transition metals with and without oxygen defect is done using FHI-aims as a software package based o...
stafne bone defect is a bone depression containing salivary gland or fatty soft tissue on the lingual surface of the mandible. the most common location is within the submandibular gland fossa and often close to the inferior border of the mandible. this defect is asymptomatic and generally discovered only incidentally during radiographic examination of the area. stafne bone defect appears as a w...
The present study was designed to evaluate the effects of platelet growth factors and periosteal mesenchymal stem cells on bone healing process, radiographically. Forty male White New Zealand rabbits in five equal groups were used in this study. A 2 mm full thickness bone defect was made in left radial bone of each animal. In group A (control) the defect was left with no medical intervention. I...
Background & Objective: Bone marrow stromal cells (BMSCs) are multipotent stem cells that can proliferate and differentiate into osteogenic cells . T his study aimed to investigate the effects of BMSC transplantation for the repair of bone defects in the rat. Materials & Methods : Twenty-eight male adult rats were divided into 4 groups. Group 1 ( control group) received no treatment after the...
Introduction: In this study, we sought to illustrate our experience in urgent surgical management for embolized cardiac septal occlude devices resulting from trans-catheter closure of atrial septal defect and ventricular septal defect. Mathrials and Methods: We retrospectively reviewed four patients aged 2–10 years who underwent urgent surgery due to cardiac septal occluder embolization between...
In this paper, the electronic transport of a graphene nanoribbon including a bond defect as well as a polyacetylene nanowire, including an extra bond, has been studied based on Green's function technique at the tight-binding approach. The results show that the behavior of electronic conductance is different in resonance and nonresonance cases with respect to variation of bond defect position. T...
چکیده ندارد.
abstract background: the retroauricular-temporal or washio flap has been introduced for reconstruction of partial nose and cheek defects, and has many advantages. we decided to evaluate the extended use of this technique in order to repair full thickness nasal defects. methods: superficial temporal and retroauricular arteries are identified with doppler flowmetry. selection points a, b, c and d...
endotracheal tube (ett) cuff herniation is a rare, and often difficult to diagnose, cause of bronchial obstruction. we present a case of outside cuff herniation of an endotracheal tube that caused pulmonary right lung atelectasis. a 29-year-old man ,a case of car accident with multiple fractures, was admitted to the emergency ward and transferred to the operating room(or) for open reduction and...
normal 0 false false false en-us x-none ar-sa microsoftinternetexplorer4 background : recently autologous fat tissue transfer has gained much popularity. on the other hand, applying the transferring methods with a higher survival rate is still controversial. the aim of this study is to compare dermis-fat graft and dermal-fascia-fat graft. methods : this animal study was conducted in 2008-2009. ...
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