نتایج جستجو برای: axial and selectivecoding

تعداد نتایج: 16834876  

Journal: :journal of computational & applied research in mechanical engineering (jcarme) 2012
mohammad ebrahim torki harchegani mohammad taghi kazemi

axial vibration effect of shell particles on dynamic stability of a cantilevered cylindrical shell under an axial follower force was addressed. in spite of free-ended shells, the reduced axial force under this effect cannot be derived analytically. instead, an approximate method was proposed based on the fact that the static (and harmonic) axial deformation under an axial load in a free-ended b...

Journal: :journal of artificial intelligence in electrical engineering 0
reza farshbaf zinati department of mechanical engineering, tabriz branch, islamic azad university, tabriz, iran ahmad habibi zad navin department of computer engineering, tabriz branch, islamic azad university, tabriz, iran mohammad reza razfar department of mechanical engineering, amirkabir university of technology, tehran, iran.

the drilling is well known as one of the most common hole making processes in the industry.due to close tolerance requirement for drilled holes in the most of work pieces, onlinecontrolling of the diameter of drilled holes seems to be necessary. in the current work, an onlinedimensional controlling system was developed for drilling process. doing this, drilling processwas executed in different ...

M.G Gorla R Kumar, R Vohra,

In the present work, the mathematical model of a homogeneous, isotropic thermoelastic double porous micro-beam, based on the Euler-Bernoulli theory is developed in the context of Lord-Shulman [1] theory of thermoelasticity. Laplace transform technique has been used to obtain the expressions for lateral deflection, axial stress, axial displacement, volume fraction field and temperature distribut...

Journal: :international journal of civil engineering 0
m.e. torki phd student, zachry department of civil engineering, texas a&m university, college station, tx 77843, usa m. taghi kazemi associate professor, department of civil engineering, sharif university of technology, tehran, islamic republic of iran s.b. talaeitaba assistant professor of azad university, department of civil engineering, khomeinishahr azad university, isfahan, islamic republic of iran

the effect of axial deformation of shell particles on the dynamic instability (flutter) of cantilevered cylindrical shells made of functionally graded materials (fgm) under an end axial follower force is addressed. to this end, at first, results for free vibration of fgm cylindrical shells were verified with previous outcomes and they were in very good agreement. then, the effect of axial defor...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2015
jamshid najafpour ali akbar salari forouzan zonouzi mohammad porghamdaryasari

hartree-fock (hf) and density functional theory (dft) methods employed to study the effect of conformational change on the 13c chemical shifts of 6-mono axial and equatorial substituted and 6,7-di axial-axial, equatorial-equatorial and axial-equatorial substitutedderivatives of 5,6,7,8-tetrahydrodibenzo[a,c]cyclo-octene. the geometry of the conformers have been optimized in the gas phase employ...

Journal: :journal of the iranian chemical research 0
davood nori-shargh department of chemistry, science faculty, arak branch, islamic azad university, arak, iran zahra mahmoodi department of chemistry, science faculty, arak branch, islamic azad university, arak, iran nasrin masnabadi department of chemistry, roudehen branch, islamic azad university, roudehen, iran hooriye yahyaei department of chemistry, islamic azad university, zanjan branch, p.o.box 49195.467,zanjan, iran seiedeh negar mousavi department of chemistry, science faculty, arak branch, islamic azad university, arak, iran

the conformational behaviors of 2,3-bis(methylthio)-1,4-dioxane (1), 2,3-bis(methylthio)-1,4-dithiane (2) and 2,3-bis(methylthio)-1,4-diselenane (3) have been analyzed by means ofhybrid-density functional theory (b3lyp/def2-tzvpp) based method and nbo interpretation.b3lyp/def2-tzvpp results showed that the axial conformations of compounds 1-3 are morestable than their equatorial conformations. ...

2016
Haotian Lin Duoru Lin Jingjing Chen Lixia Luo Zhuoling Lin Xiaohang Wu Erping Long Li Zhang Hui Chen Wan Chen Bo Zhang Jinchao Liu Xiaoyan Li Weirong Chen Yizhi Liu

Axial length (AL) is a significant indicator of eyeball development, but reports on the overall status of axial development in congenital cataract (CC) patients and its relationship with patient demographics, such as age, sex, and laterality, are rare. We prospectively investigated the AL of 1,586 patients ≤ 18 years old and undergoing cataract surgery in China from January 2005 to December 201...

Journal: :iranian journal of radiation research 0
s.m. ghavami radiology department, paramedical school, tabriz university of medical sciences, tabriz, iran a. mesbahi medical physics department, medical school, tabriz university of medical sciences, tabriz, iran i. pesianian radiology department, paramedical school, tabriz university of medical sciences, tabriz, iran

background: x-ray computed tomography (ct) examinations deliver a significant amount of radiation doses to patients comparing to conventional radiography examinations. the objective of the current study was to analyze and investigate the average patient received dose from axial and spiral ct exams in a medical imaging center. material and methods: in this study, the patient imaging technique, w...

Journal: :acta medica iranica 0
siatiri h

this study was conducted to define the prevalence and types of corneal astigmatism in relation with corneal optical power, axial length, sex and patient age. 641 cataract patients were included in a descriptive study. complete eye examinations were included in a descriptive study. complete eye examinations were performed. the data were analysed by standard procedures including analysis of varia...

The purpose of this study is to investigate bending moment and the axial load capacity of a pressurized pipe suffering from a through-wall circumferential crack repaired by a composite sleeve. The three-dimensional finite element method (FEM) was adopted to compute the results, and the failure assessment diagram (FAD) was employed to investigate the failure behavior of the repaired pipe. The fi...

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