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Increasing the concentration of atmospheric carbon dioxide is the main factor for the climatic change having some harmful consequences for the human health while there is no considerable effort for decreasing this accelerated global problem, yet. Kermanshah province located in the west of Iran has about 1,200,000 ha rangeland which is dominated by Astragalus sppas the more frequent shrub beinga...
the construct of self-efficacy has received increasing attention in research over the past two decades. many studies have been carried out 1.3 significance of the study this study has pedagogical implications since improving students’ self- efficacy and autonomy is important for promoting actual performance on classroom academic tasks. in academic settings, it has been shown that self-effi...
Introduction: Decentralized wastewater treatment facilities are an expensive approach for developing countries. Decentralized wastewater treatment plants (DWWTPs) are a flexible technology. They have low construction and operational costs. Site selection is the most significant stage in the implementation of a DWWTPS. Therefore, the present study aimed to perform a site selection among the prop...
The nonperturbative aspects of string theory are explored for noncritical string in two distinct formulations, loop equations and matrix models. The effects corresponding to the D-brane in these formulations are especially investigated in detail. It is shown that matrix models can universally yield a definite value of the chemical potential for an instanton while loop equations cannot. This imp...
objective: the aim of this study was to evaluate and compare the population of natural killer t lymphocyte (nkt) in the uterus and spleen of the hyperstimulated and control mice at the seventh day of pregnancy. materials and methods: the superovulated and control mice were put individually in a cage with a male mouse. in the next morning they were considered for observing the vaginal plag. the...
abstract: about 60% of total premium of insurance industry is pertained?to life policies in the world; while the life insurance total premium in iran is less than 6% of total premium in insurance industry in 2008 (sigma, no 3/2009). among the reasons that discourage the life insurance industry is the problem of adverse selection. adverse selection theory describes a situation where the inf...
the analysis of natural and cultural factors in the contexts of an archeological site would reveal the processes constituting the event of settlement after the formation of cultural layers. in other words with the study of cultural processes, we seek the information and patterns which cause formation, shaping, and unevenness of the site to its present shape. in this regard, the initial studies ...
In this paper, the structural properties of C20 and C12B8 fullerene interacting with glycine based onthree active sites of glycine and one C atom or one B atom in C12B8 were analyzed through thedensity functional theory. It was found out that the binding of glycine to C12B8 generated a complex.Our results were extremely relevant in order to identify the potential applications of functionalizedC...
learning a second or foreign language requires the manipulation of four main skills, namely, listening, reading, speaking, and writing which lead to effective communication. it is obvious that vocabulary is an indispensible part of any communication, so without a vocabulary, no meaningful communication can take place and meaningful communication relies heavily on vocabulary. one fundamental fac...
a set of one hundred and twenty nine patients with known primary malignancy and suspected brain metastasis was reviewed in present study. the patients were selected among patients presented to the mri section of imam khomeini hospital or a private mri center in tabriz (iran). primary tumor site, clinical manifestations, number and site of lesions were identified in this patient population. the ...
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