introduction pistachio (pistacia vera l.) is one of the most important export crops of iran which has an important role in non-petroleum exports and has over $800 million benefit per year. however, production of this crop faces many problems in main production centers, especially in energy efficiency and productivity. the pistachio is a native crop of iran and syria. the major producers of pist...

The aim of this study was to compare energy consumption in dairy farms with different sizes. Sources of energy include non renewable sources such as fossil fuel, and electricity and renewable sources such as forage, concentrate, machinery, labor, and water. The required data were collected from 42 dairy farms in Tehran province, Iran and were analyzed to assess energy consumption based on diffe...

the main objective of an ecosystem sustainable management is to preserve itscapacity to respond and adapt to current disturbances and/or future changes, and maintain theprovision of environmental goods and services. two very important properties linked to thisobjective are the ecosystem resilience and resistance to disturbance factors. the objective ofthis paper is to recommend conceptual modif...

sir, the recent publication on “publication ethics” is very interesting (1). the article by fazly bazzaz and sadeghi demonstrated many interesting cases                   of misconducts. indeed, the misconducts can be seen  in many ways. as mentioned in the present publication, both author and editor can perform publication misconducts. nevertheless, the problem has many more facets. sometimes,...