نتایج جستجو برای: experimental method

تعداد نتایج: 2207140  

2017
Chao Chen Shengdun Zhao Xiaolan Han Xuzhe Zhao Tohru Ishida

Aluminum alloy sheets have been widely used to build the thin-walled structures by mechanical clinching technology in recent years. However, there is an exterior protrusion located on the lower sheet and a pit on the upper sheet, which may restrict the application of the clinching technology in visible areas. In the present study, an improved clinched joint used to join aluminum alloy sheets wa...

2009
Yoshifumi Kawamura Takashi Hikage Toshio Nojima

This paper presents a new whole-body averaged specific absorption rate (SAR) estimation method based on the cylindrical fields scanning technique. The aim of this study is to achieve experimentally an estimation of whole-body averaged SAR in human models due to plane wave exposure using the radiation-field scanning technique. In this paper, the validity of the proposed methods is investigated u...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد 1388

two groups of students were assigned as experimental and control ones, and were given instruction on directed reading-thinking activities and after some treatment, they were post-tested. although the initial pre-test did not show any significant differences, the final post-test result revealed that the cooperative reading comprehension helped the experimental group. the cooperative students’...

Journal: :International Negotiation 2005

Journal: :Vestnik of Experimental and Clinical Surgery 2017

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد شاهرود - دانشکده علوم انسانی 1393

the present study was conducted to investigate the role of summary in teaching grammar process on pre-university students. to this end, 48 male pre-university students in semnan were participants. they were math class that we called experimental group and science class as control group. in order to make sure there was no significant difference in proficiency level of two groups. a pre-test wa...

2005
Rachel Croson RACHEL CROSON

There are many similarities between experimental economics and psychological research, both substantive and methodological. However, there are important differences as well. This article discusses five methodological areas where experimental economists and experimental psychologists differ: incentives, context, subject pools, deception, experimental details and data analysis. Within each topic ...

Journal: :thrita 0
maryam soleimani department of basic sciences, university of social welfare and rehabilitation sciences, tehran, ir iran seyed behnamedin jameie department of medical basic sciences, faculty of allied medicine, iran university of medical sciences, tehran, ir iran; cellular and molecular research center, iran university of medical sciences, tehran, ir iran; department of medical basic sciences, faculty of allied medicine, iran university of medical sciences, tehran, ir iran. tel: +98-2186705801, fax: +98-2188622593 soodeh razeghi jahromi multiple sclerosis research center, neuroscience institute, sina hospital, tehran university of medical sciences, tehran, ir iran akram alizadeh department of tissue engineering, school of advanced medical technologies, tehran university of medical sciences, tehran, ir iran mahdieh kerdari department of medical basic sciences, faculty of allied medicine, iran university of medical sciences, tehran, ir iran

results our data showed that the eae induction in group one was significantly more successful than group two (with the mean score > 3). conclusions although the eae is still a scientific method to induce ms in rodents, it requires more attention to environmental factors that might influence the result. the mechanisms of these factors are unknown, but it seems that the role of housing environmen...

α-Bi2O3 was synthesized via a hydrothermal method at 180 °C for 12 h in 1 (S1) and 2 (S2) M KOH aqueous solutions, using Bi(NO3)3•5H2O as raw material. The synthesized material was characterized by X-ray powder diffraction (XRPD) technique. The XRPD results indicated that by using 1M KOH aqueous solution, α-Bi2O3 was obtained with small fractions of β-Bi2O3, while 2M KOH solution resulted in pu...

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