energy consumption in iran is a subject of debate. some may think that oil is cheap in iran and thus no need for this kind of research. this simple minding is erroneous first because iran subsidizes billion dollars each year for the imported diesel fuel specially for agricultural use and second because energy studies reveal the degree of professionally using the technology. we can easily find t...

castor bean (ricinus communis l.( with a capability to withstand harsh conditions, low nutritional needs, 50 percent of oil content and high- quality, is one of the best crop used to produce biodiesel. the first step toward introduction and widespread cultivation of this crop is to investigate the energy balance for its cultivation. to do so, energy input (include renewable and nonrenewable) an...

background: in order to fit the job physiologically to the worker, understanding of acceptable work load is very important. this study was conducted to estimate energy expenditure during the work and associated factors among male workers of a steel industry. methods: in this cross-sectional study, 100 male workers employed in foolad payeh fars with dynamic job participated voluntarily. data col...

to investigate the electromagnetic interaction of molecules inside the nanotubes, first, the structure of nanotubes b16n16 was optimized with hybrid density functional theory (b3lyp) using the epr-ii basis set, then cu, cu+, cu++ were located in nanotube and we studied the total energy, band gap energy, electrical potential, changes of band gap energy in terms of total energy and dipole moment ...