نتایج جستجو برای: like defects however
تعداد نتایج: 2259621 فیلتر نتایج به سال:
Maximizing the sustainable supercurrent density, J C, is crucial to high-current applications of superconductivity. To achieve this, preventing dissipative motion of quantized vortices is key. Irradiation of superconductors with high-energy heavy ions can be used to create nanoscale defects that act as deep pinning potentials for vortices. This approach holds unique promise for high-current app...
Mitochondrial biogenesis and morphological changes are associated with tissue-specific functional demand, but the factors and pathways that regulate these processes have not been completely identified. A lack of mitochondrial fusion has been implicated in various developmental and pathological defects. The spatiotemporal regulation of mitochondrial fusion in a tissue such as muscle is not well ...
both anorganic bovine bone (abb) and β-tricalcium phosphate (β-tcp) are used in clinical practice as bone substitute materials, but there is limited data comparing these two materials in standardized defects. the aim of this study was to histologically evaluate the effectiveness of abb and β-tcp in the healing of experimentally induced bone defects.eighteen bone defects were created on the calv...
Friction stir welding (FSW) was applied to a 10 mm-thick plate for the Fe-15Mn-10Cr-8Ni-4Si seismic damping alloy. A sound FSW joint obtained successfully without macro-defects such as groove-like defects and tunnel holes. However, small pores with diameters of 1–5 μm were formed owing wear tool during FSW. The decrease in heat input suppressed wear. Consequently, distribution limited border zo...
arly intrauterine period during 3 8 weeks of gestation is the vital period of life for the normal development of organs and organ system or organogenesis. Congenital malformation or defects are structural, functional and metabolic disorders at birth and the exact cause of birth defects in 40-60% are unknown. However, factors like genetic, environmental, teratogenic and infectious agents play im...
دستگاه معادلات خطی افزوده در بسیاری از محاسبات علمی و کاربردی،مثل حل تقریبی مسأله استوکس به روش عناصر متناهی ظاهر می شود. در این پایان نامه ابتدا روشهایsor-like ، ssor وmssor برای حل اینگونه دستگاه ها را مطالعه می کنیم. سپس یک پیش شرط ساز ساده اما کارا برای روش sor-like ارائه می شود. در ادامه شکل اصلاح شده ای از روشssor بنام issor ارائه می گردد. در پایان نتایج عددی برای نشان دادن کارائی روشها ر...
Tarlov cyst (TCs) is also called perineural cyst, which a rare disease of the posterior nerve root prevalently localized in lumbo-sacral region, however, it possible every part spinal cord. These cysts represent dilation nerve-root sheath that often communicate with subarachnoid space through valve-like mechanism containing cerebrospinal fluid (CSF) and neural tissue. asymptomatic discovered in...
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-...
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...
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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