نتایج جستجو برای: intensity method

تعداد نتایج: 1778753  

Journal: :journal of sciences islamic republic of iran 0

a more detailed analysis is made of the energy spectrum of the diffuse component of extragalactic gamma rays over the range of 0.3- 10 gev, obtained fromthe egret instrument at the compton gamma ray observatory. the derived excess energy spectrum of high galactic latitude, b > 60°, using intercept method shows that it is correlated with virgo cluster (over lsr) and average virgo intensity is ab...

The purpose of this study is to investigate and analyze factors affecting the energy intensity in provinces of Iran with emphasis on information and communications technology (ICT) index, during the period from 2010-2015. Weighted Average Least Square (WALS) method and information criteria have been applied to select the model; so that, based on WALS method, six variables among various effectiv...

Journal: :journal of solid mechanics 0
r ghajar department of mechanical engineering, k.n. toosi university ,tehran, iran s peyman department of mechanical engineering, k.n. toosi university ,tehran, iran j sheikhi department of civil engineering ,razi university , kermanshah, iran m poorjamshidian department of mechanical engineering, kashan university ,kashan, iran

in this paper, the interface crack of two non-homogenous functionally graded materials is studied. subsequently, with employing the displacement method for fracture of mixed-mode stress intensity factors, the continuous variation of material properties are calculated. in this investigation, the displacements are derived with employing of the functional graded material programming and analysis o...

Journal: :ماشین های کشاورزی 0
محمدعلی رستمی محمد حسین رئوفت عبدالعباس جعفری محمد لغوی مهدی کسرایی سید محمدجعفر ناظم السادات

local information about tillage intensity and ground residue coverage is useful for policies in agricultural extension, tillage implement design and upgrading management methods. the current methods for assessing crop residue coverage and tillage intensity such as residue weighing methods, line-transect and photo comparison methods are tedious and time-consuming. the present study was devoted t...

Journal: :journal of ultrafine grained and nanostructured materials 2013
vahid ghafouri mohsen shariati akbar ebrahimzad

zno nanowires with a diameter of 70 nm and nanorods with a diameter in the range of 100-150 nm and two micrometer in length were grown on glass substrates by resistive evaporation method and applying a two step oxidation process at low temperatures, without using any catalyst, template or buffer layer. xrd pattern of these nanostructures indicated a good crystallinity property with wurtzite hex...

Journal: :Journal of magnetic resonance imaging : JMRI 2007
Sungdae Yun Walid E Kyriakos Jun-Young Chung Yeji Han Seung-Schik Yoo Hyunwook Park

PURPOSE To develop a novel approach for calculating the accurate sensitivity profiles of phased-array coils, resulting in correction of nonuniform intensity in parallel MRI. MATERIALS AND METHODS The proposed intensity-correction method estimates the accurate sensitivity profile of each channel of the phased-array coil. The sensitivity profile is estimated by fitting a nonlinear curve to ever...

Journal: :علوم زیستی ورزشی 0
امیر حسین حقیقی دانشیار دانشگاه تربیت معلم سبزوار عبدالحامد دریجانی کارشناس ارشد فیزیولوژی ورزش دانشگاه تربیت معلم سبزوار محمدرضا حامدی نیا دانشیار دانشگاه تربیت معلم سبزوار

the purpose of the present research was to examine the effect of one bout of exhaustive aerobic exercise with two different intensities on levels of serum mda in male smokers. for this purpose, 12 male smokers (age: 22.08 ±1.31 years, percent of body fat: 17.26 ±4.92% and body mass index: 23.21±2.96 kg/m2) were voluntarily selected and randomly participated in a crossover design in three situat...

Journal: :بهداشت و توسعه 0
روح الله مقصودی مقدم فرهاد فراستی علی طولابی زهره جعفرزاده

background: light is an important and adjustable physical factor in the job environment.this study aimed to determine the intensity of natural and mixed light and also the level of ultraviolet radiation in libraries and computer sites of ilam universities in spring 2011.   methods: in this cross-sectional study, 10 libraries, 16 study saloons, and 7 computer sites were selected. luminosity asse...

1994
W. M. Wells

the spatial intensity inhomogeneities that are due to the equipment. This paper describes a statistical method that uses knowledge of tissue properties and intensity inhomogeneities to correct for these intensity inhomogeneities. Use of the Expectation-Maximization algorithm leads to a method (EM segmentation) for simultaneously estimating tissue class and the correcting gain eld. The algorithm...

Journal: :مرتع و آبخیزداری 0
سید محمود حسینی 2 کارشناس ارشد بیابان زدایی و عضو باشگاه پژوهشگران جوان دانشگاه آزاد اسلامی واحد ارسنجان، ایران محمدرضا اختصاصی دانشیار دانشکده منابع طبیعی و کویرشتاسی دانشگاه یزد، ایران علیرضا شهریاری دانشیار دانشکده منابع طبیعی دانشگاه زابل، ایران حامد شفیعی دانش آموخته کارشناسی ارشد بیابان زدایی، دانشکده منابع طبیعی، دانشگاه زابل، ایران

sistan plain is affected by desertification and this phenomenon has serious impacts on roads and socio- economic activities of local people of this region. the main purpose of this study is estimating the current and potential desertification intensity of niatak region of sistan based on micd method. that, through it the working units of this region were prepared as the base map for evaluating ...

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