conclusions the crude extract of streptomyces sp. acs52 had high antibacterial activity against a wide spectrum of bacteria and could be of interest due to its features such as ability to grow at low temperatures and alkaline ph levels. results streptomyces sp. acs52 is a cold-resistant alkalophilic bacterium strain with antibacterial activity against a broad spectrum of pathogenic bacteria. th...

The assessment of the quantitative and qualitative changes, the result of the impacts imposed by natural factors, and human interventions during specific sampling periods has a substantial influence on nature, management method and tending operation of every region’s forests. The present research was carried out in Golestan province forests (Iran) over an 11- year period and the obtained statis...

this research aims at studying challenges, difficulties and prospects of irans income distribution sector during 2005-2015 by means of an econometric model. the first part of the paper reviews some theories and empirical accomplishments regarding income distribution in national and international levels. the next part of the paper goes through the trends of income distribution and social welfare...

in order to investigate the effects of  management models on the diversity of wooden species, forests of third series of shiler, the first division mehrbanrud watershed and third and fourth series of eight division of behshahr – neka townships were studied with participatory and governmental management respectively. the diversity of the wooden species have been evaluated by diversity parametric...

Devaluation has different effects on the structure of trade patterns in countries which have a fixed exchange rate regime. The experience of devaluation in many countries has clearly shown that devaluation policies have not always led to the improvement of their trade pattern structures. Some empirical studies have revealed that after employing devaluation, the real rate of money in some nation...