نتایج جستجو برای: constant parameters

تعداد نتایج: 772328  

1999
Michael D. Janezic Jeffrey A. Jargon

This letter presents a new transmission line method for measuring the complex permittivity of dielectric materials using propagation constant measurements. In contrast to previous methods, a network analyzer calibration is unnecessary since calibrated scattering parameters are not required. We use measurements in X-band waveguide to show that this technique compares well with the transmission/r...

Journal: :international journal of data envelopment analysis 2014
s. jafarian-namin a. amiri e. najafi

control chart is the most well-known chart to monitor the number of nonconformities per inspection unit where each sample consists of constant size. generally, the design of a control chart requires determination of sample size, sampling interval, and control limits width. optimally selecting these parameters depends on several process parameters, which have been considered from statistical and...

The surface parameter of nanoparticles such as hydrophobicity and a hydrophilicity on protein structure and function is very important. In this study, conformational changes of glucose oxidase (GOx) in the mercaptopurine: GNPs and 11-mercaptoundecanoic acid: GNPs as a hydrophobic and a hydrophilic GNPs surface was investigated by various spectroscopic techniques, including: UV-Vis absorption, f...

Journal: :تحقیقات مهندسی کشاورزی 0
محمدرضا قاسمی بوسجین دانشجوی کارشناسی ارشد سیدسعید محتسبی دانشیار دانشکده مهندسی بیوسیستم پردیس کشاورزی و منابع طبیعی دانشگاه تهران منصور بهروزی لار استاد دانشکده مهندسی بیوسیستم پردیس کشاورزی و منابع طبیعی دانشگاه تهران حجت احمدی استادیار دانشکده مهندسی بیوسیستم پردیس کشاورزی و منابع طبیعی دانشگاه تهران

in this research, the total torque input and output shafts were subjected to are used to formulate twodifferential equations using applied dynamics and fluid mechanics. the equations show that the input andoutput torques are a function of the constant geometrical parameters of a torque converter, includinginternal and external diameters of vanes, angle and length of vanes, cross section area be...

2007
Maria Drakaki Alkis A. Hatzopoulos Stylianos Siskos Dimitrios K. Papakostas

— Various model parameter calculation equations of RF CMOS inductors are compared. The calculation equations are using as variables either Y, Z-parameters or S-parameters. Results are based on on-wafer RF S-parameter measurements of a 3.75 turn spiral inductor fabricated in AMIS 0.7 μm CMOS DM1P n-well technology. Results obtained with calculation equations for a differentially driven inductor ...

The surface parameter of nanoparticles such as hydrophobicity and a hydrophilicity on protein structure and function is very important. In this study, conformational changes of glucose oxidase (GOx) in the mercaptopurine: GNPs and 11-mercaptoundecanoic acid: GNPs as a hydrophobic and a hydrophilic GNPs surface was investigated by various spectroscopic techniques, including: UV-Vis absorption, f...

Ali Reza Kamali-Asl Hamid Reza Hemmati Mohammad Reza Javanshir Nematollah Heidarloo, Vahid Lohrabian

Introduction: 192Ir is one of the important sources frequently used in brachytherapy. Up to now, a lot of commercial models of this source have been made which Ir-192 has been recently added to them. The aim of the present study is to determine the dosimetric parameters of this new source model based on the recommendations of TG-43(U1) protocol using Monte Carlo simulation tech...

Mustafa Kamal

In many of the studies concerning Accelerated life testing (ALT), the log linear function between life and stress which is just a simple re-parameterization of the original parameter of the life distribution is used to obtain the estimates of original parameters but from the statistical point of view, it is preferable to work with the original parameters instead of developing inferences for the...

ژورنال: سلامت و محیط زیست 2011
سمرقندی, محمدرضا, شیرزاد سیبنی, مهدی, ضرابی, منصور, فرخی, مهرداد, پیری دوگاهه, هادی,

Background and Objectives: Industrial wastewater included the cyanide is one of the important sources of environmental pollution which founded in Industrial wastewater which are harmful for human health and environment. Therefore, the purpose of this research that was fundamental designed is investigation of Removal of cyanide from aquatic solution by using of iron and copper powder in experime...

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