نتایج جستجو برای: depletion effect
تعداد نتایج: 1691794 فیلتر نتایج به سال:
Literature review related to nonrenewable resources shows that technological improvements have considerable effects on resource depletion and decreasing operational cost. Therefore it is assumed that technology is the most important and influential variables in the production function and utilization cost of these resources. In this study, we assess the long term effect of technology diffusion...
this study aimed to evaluate the environmental consequences of kiwifruit production in guilan province of iran by the life cycle assessment (lca) methodology during growing season of 2011-2012. data were obtained from 84 kiwifruit producers using a face to face questionnaire method. for this purpose, a functional unit equal to one ton kiwifruit was assumed based on iso 14040 method. impacts of ...
A general asymptotic analysis of the Gunn effect in n-type GaAs under general boundary conditions for metal-semiconductor contacts is presented. Depending on the parameter values in the boundary condition of the injecting contact, different types of waves mediate the Gunn effect. The periodic current oscillation typical of the Gunn effect may be caused by moving charge-monopole accumulation or ...
In current study, after one week of adaptation, 250 common carp (Cyprinus carpio) were fed with two levels of Lactobacillus probiotic (106, 107) for 42 days and exposed to 50% lethal concentration of silver nanoparticles at for 10 days. Treatments included a control group, a probiotic group of 106, a probiotic group of 107, a group exposed to silver nanoparticles, a group of exposed to silver n...
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