نتایج جستجو برای: distribution patterns

تعداد نتایج: 984642  

Journal: :iranian journal of radiology 0
mirjan m. nadrljanski department of diagnostic imaging, institute of oncology and radiology of serbia (iors), serbia; department of diagnostic imaging, institute of oncology and radiology of serbia (iors), pasterova, serbia +381-13353769, [email protected] biljana b. marković center for radiology and magnetic resonance imaging, clinical center of serbia (kcs), serbia; department of radiology, faculty of medicine, university of belgrade, serbia zorica č. milošević department of diagnostic imaging, institute of oncology and radiology of serbia (iors), serbia; department of radiology, faculty of medicine, university of belgrade, serbia

conclusion non-mass-like lesions, lesions with focal or segmental distribution, with a “plateau” enhancement curve type were the most frequent findings of dcis lesions on mri. background adequate diagnosis of ductal carcinoma in situ (dcis) could lead to efficacious treatment. due to the fact that dcis lesions can progress to invasive carcinomas and that the sensitivity of the standard examinat...

Journal: :iranian journal of medical sciences 0
mansoureh kazemi department of biology, mashhad branch, islamic azad university, mashhad, iran mohammad reza fayyazi-bordbar department of psychiatry, mashhad university of medical sciences, mashhad, iran nasser mahdavi-shahri department of biology, kavian institute of education, mashhad, iran

autism is a neurodevelopmental disorder originating from early childhood; nevertheless, its diagnosis is in older ages. in addition to heredity, environmental factors are also of great significance in the etiology of the disease. dermatoglyphic patterns, albeit varied, remain stable for a lifetime and yield a large number of patterns upon examination. studies have shown a significant associatio...

Journal: :international journal of information science and management 0
kotti thavamani regional medical library, the tamil nadu dr. m. g. r medical university

this article analyzed the various bibliometric components of the articles published in the malaysian journal of library and information science from 1996 to 2012. various quality aspects of the 279 articles published in the period were studied. the study demonstrates and elaborates on the various aspects of the journal, such as its distribution of article by year, authorship patterns, distribut...

Journal: :جنگل و فرآورده های چوب 0
فریده امیدوار حسینی دانشجوی کارشناسی ارشد رشتۀ جنگلداری، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات تهران، تهران، ایران رضا اخوان استادیار پژوهش، مؤسسۀ تحقیقات جنگل ها و مراتع کشور، تهران، ایران هادی کیادلیری استادیار گروه جنگلداری، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات، تهران، ایران اسداله متاجی دانشیار گروه جنگلداری، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات، تهران، ایران

one of the most visible aspects of a forest stand structure is the spatial patterns of trees. competition affects on forest structure and its understanding is important, when the purpose of forest management is to imitate the dynamic of natural ecosystems. for this purpose, an unmanaged intact forest was selected with 26 hectares area. all chestnut leaf oak (quercus castaneifolia) trees with a ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده ادبیات و زبانهای خارجی 1391

this study was intended to analyze the listening tapescripts of the elementary and pre-intermediate levels of total english textbooks from the pragmatic dimension of language functions and speech acts in order to see whether the listening tasks are pragmatically informative or not. for this purpose, 8 conversations from the two books were selected randomly, and then, the two pragmatic models of...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده علوم پایه 1394

چکیده در این پایان نامه ضمن معرفی توزیع وایبل، برآوردگر درستنمایی ماکزیمم و بیز پارامتر مقیاس توزیع وایبل با داده های سانسور شده را با استفاده از توزیع پیشین جفری و توزیع پیشین جفری تعمیم یافته تحت توابع میانگین مربع خطا و میانگین درصد خطا محاسبه و با یکدیگر مقایسه شده اند. در پایان ضمن مقایسه کارایی برآوردگرها نتیجه می شود که پارامتر برآورد شده توزیع وایبل بدست آمده از روش بیز با توزیع پیشین ...

A. Khalkhali, F. Malmir M. H. Shojaeefard S.H. Khakshournia

This paper investigates the effect of different methods of carbon nanotubes distribution in a thin matrix on static and dynamic behavior of the nanocomposite. Five different symmetric patterns of distribution are considered, including four parabolic patterns and a linear one. For each pattern, the effective mechanical properties of the resultant nanocomposite are calculated using the rule of mi...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1388

based on the latest records of typhlops vermicularis merrem, 1820 from iran, this species is distributed in the northern and southern regions of the country. in this study, new records of typhlops vermicularis are presented and it is shown that distribution range of this species is extended towards the eastern and western iran, and according to the new distribution map, it can be assumed that t...

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