نتایج جستجو برای: gray medium
تعداد نتایج: 276139 فیلتر نتایج به سال:
Introduction: Voxel based morphometry is a type of statistical parametric mapping that can be used to investigate the effect of diseases such as epilepsy, Alzheimer's disease and Parkinson's disease or other agent such as skills on brain structure (white matter, gray matter and cerebrospinal fluid). The aim of this study is evaluate the effectiveness of this method in detection of differen...
خلاصه: سابقه و هدف: توانایی تخمین ثبات اولیه ایمپلنت و کیفیت استخوان قبل از جراحی در ناحیه قراردادن ایمپلنت، امکان انتخاب پروتکل درمانی مناسب را فراهم می کند. هدف از این مطالعه تعیین کیفیت استخوانی در ناحیه جایگذاری ایمپلنت با استفاده از CBCT gray values(bone density values) و بررسی ارتباط ان باثبات اندازه گیری شده بلافاصله بعد از جایگذاری ایمپلنت می باشد. مواد و روشها: در این مطالعه تجربی ت...
The present paper deals with an exact semi-analytical formulation of a combined conductive-radiative heat transfer, applied to two-dimensional semi-transparent medium carrying square centered obstacle. gray participating black boundaries absorbs, emits but does not scatter radiation. One intends evaluate the temperature and radiative flux distributions within medium. transfer equation has been ...
background: carpal tunnel syndrome (ctu) is the most common neuropathy in the body and one of the most important causes of occupational disability. the aim of the present study was to compare the diagnostic power of doppler sonography and gray scale in diagnosing cts and their comparison with nerve conduction studies (ncv). methods: in this analytical study, diagnostic value of doppler and gray...
In this study, the effect of different doses of gamma radiation was investigated on seed germination factors of Caper species. Gamma irradiation was performed using a cobalt-60 radiation with the radiation speed of 0.018 Gray/second and five doses of gamma radiation (0, 20, 40, 60 and 100 Gray) in a completely randomized design with 4 replication. The results showed that gamma radiation signifi...
Corynespora cassiicola threatens soybean and cotton production in Brazil. The objective of this study was to evaluate cultural morphological aspects C. isolated from different Brazilian regions, culture media. isolates were grown PDA (Potato Dextrose Agar) V8 juice agar characteristics evaluated were: color, aspect, growth rate mycelia, as well dimension conidia, number septa per conidium. Cult...
The images of dental CBCT imaging systems used in conic shaped beams, stored in the DICOM format, have various applications in the dentistry, including bone density estimation to select the location of the orthodontic implant, bone loss detection and etc. In these systems, unlike CT imaging systems, the resulting images exhibit gray-scale non-uniformity in each of the different axis in FOV. Thi...
Factors influencing Agrobacterium-mediated transformation of 15 Vitis rotundifolia, Vitis rupestris, Vitis vinifera and Vitis hybrids were explored. A green fluorescent protein/neomycin phosphotransferase II (GFP/NPT II) fusion gene was used to measure transient and stable transgene expression levels. Embryogenic cell cultures at different developmental stages were co-cultivated with Agrobacter...
Purpose: This study is designed to determine the sex differences in brain weight and volume of left hemisphere and its gray and white matters in right-handed normal subjects and the right-handed subjects which were suffered from Alzheimer and Parkinson diseases. Materials and Methods: This study was performed on 72 normal human brains (38 male, 34 female), 11 brains suffered from Alzheimer (4 ...
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