in this expriment, the effect of different levels of ziziphus zizyphus(zz) (0, 30 or 60 mg) on fermentation parameters, total protozoa population  and three sub family of protozoa  entodiniinae, ophryscolecinae, diplodiniinae and family of isotrichdaeandmethane gas production was assessed using in vitro method and a completely randomized design. the rate of gas production for the insoluble frac...

minimum profitability of production factors is one of the most important economic features in the rural areas of iran. profitability of production factors such as land, water, capital etc. is in its lowest level in the rural areas of the country. rural economy is dependent to the agricultural economy up to a great extent. the most important factors in keeping profitability of production factors...

“Every description of natural processes must be based on ideas which have been introduced and defined by the classical theory.” — Niels Bohr, 1923 “There must be quite definite and clear grounds, why you repeatedly declare that one must interpret observations classically, which lie absolutely in their essence. . . . It must belong to your deepest conviction—and I cannot understand on what you b...

Mexico has undergone a dramatic market liberalization since facing major debt problems in the early 1980s. The restructuring has coincided with a decline in unionization and, surprisingly, a steady increase after 1989 in the union-nonunion wage gap. I conduct an analysis using cross-sectional data from 1984 to 1998 to show that these trends are attributable to unions rather than changes in the ...

ii This thesis is dedicated to my beloved family, to my parents for their never-ending encouragement, love and confidence in me and to my brother for his motivation and guidance. iii ACKNOWLEDGEMENTS I feel it as a unique privilege, combined with immense happiness, to acknowledge the contributions and support of all the wonderful people who have been responsible for the completion of my master'...

alloy steel, which is versatile in such qualities as grade, property and application, can play an important role in the technical and economic development of the country. the present consumption of the key industrial sector to this strategic material, specified basically as semi- finished products exceeds 100,000 tons per year. however, a rough estimation of the true potential needs, does clear...

this study examined the phonetic characteristics of persian sentence stress produced by native mandarin chinese speakers. we compared the phonetic correlates of sentence stress, namely fundamental frequency (f0), vowel duration, and vowel intensity in the production of 8 mandarin chinese speakers and 8 native persian speakers. results indicated that mandarin chinese speakers of persian could di...