نتایج جستجو برای: industry concentration rate
تعداد نتایج: 1461628 فیلتر نتایج به سال:
Changes introduced to the theories of advantage and the rejection of enterprises homogeneity hypothesis revealed the characteristics of enterprises and environmental factors such as the degree of market competitiveness in trade. It diverted the trade approaches from macroeconomic level and price variables like foreign exchange and inflation rates into the microeconomic level including the size ...
بررسی ارزش غذایی تاغ و عمل آوری آن با سود و آهک در مراحل مختلف رشدبا استفاده از روش کیسه های نایلونی
abstract this study is carried out to determine the chemical composition in the three vegetative stages of the haloxylon sp., degradation parameters, with adding naoh and ca(oh2 ). for this purpose, in may and october and january 2010 enough some haloxylon sp. of the ammary area was prepared. crude protein and ash percentage are decrease, neutral detergent fiber percentage with pragress stage ...
Chromium through natural processes and human activities enters the air, soil and water. Chromium-resistant bacteria are capable of reducing toxic Cr(VI) to less toxic Cr(III). In this work, batch studies were conducted to evaluate the effect of environmental factors on the rate of Cr(VI) reduction from synthetic wastewater of metal plating industry by Bacillus cereus under aerobic conditions. T...
This article analyzes the impact of improvements in market access on the regional concentration of industry in Germany during the second half of the 19th century. The expansion of market access can promote the dispersion of industry if cheaper land and labor provide incentives for industry location outside of existing manufacturing centers. On the other hand, better market access can increase t...
Biosorption of Acid Yellow (AY17) a monoazo acid dye currently used in textile and dyeing industries was investigated using Spent Brewery Grains (SBG) a brewing industry waste in a batch system with respect to initial pH, temperature, initial dye concentration, biosorbent dosage, and contact time. The biomass exhibited the highest dye uptake capacity at 303 K, initial pH value of 2, the initial...
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