نتایج جستجو برای: asymmetric effects

تعداد نتایج: 1604108  

Journal: :journal of chemical and petroleum engineering 2012
mohamad soltanieh mojtaba shariaty-niassar sara farhangi

in this work a new resistance model has been presented based on that of henis-tripodi which can be used for interpretation of gas permeation data in composite and asymmetric membranes. in contrast to the previous works, in this model the fraction of the support layer surface that includes the pores filled with coating material has been taken into account. the influences of the filled pores on s...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2015
shaoxiang wu qi wang yao-feng wang pran gopal karmaker fu-xue chen

trifluoromethylated organic compounds, especially chiral quaternary alcohols bearing trifluoromethyl group are of important intermediates in drugs, agrochemicals and etc.an efficient epoxidation of β-cf3-β,β-disubstituted unsaturated ketones (6) has been developed with environmental benign hydrogen peroxide as the oxidant and f5-substituted chiral quaternary ammonium salt (1g or 5) derived from...

Journal: :iranian journal of public health 0
gh mahdavi z izadi

background: existence or non-existence of adverse selection in insurance market is one of the important cases that have always been considered by insurers. adverse selection is one of the consequences of asymmetric information. theory of adverse selection states that high-risk individuals demand the insurance service more than low risk individuals do. methods: the presence of adverse selection ...

Journal: :Annals of the New York Academy of Sciences 2009

2015
Bomjin Lee Joongsook Lee Jeongok Yang Kwangjin Heo Hojin Hwang Boyoung Kim Dongwook Han

[Purpose] The purpose of this study was to observe the effects of stretching the upper trapezius muscle on the asymmetric rate of bite force. [Subjects] Forty-seven female university students who had all their original teeth, had no disorders in the temporomandibular joints, and had never worn braces; participated in this study. [Methods] An occlusometer was used to measure biting forces. Subse...

Journal: :تحقیقات اقتصادی 0
محسن مهرآرا دانشیار دانشکده ی اقتصاد دانشگاه تهران اکبر سرخوش کارشناس ارشد اقتصاد

in this paper, asymmetric effects of exchange rate fluctuation (according to positive and negative shocks) on real output were investigated. in the meantime, the study of behaviour of real output growth in iran’s economy over the period 1338-1386 was done. in specification of the output growth equation, in spite of considering positive and negative shocks of exchange rate, the effects of other ...

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