production of electricity for promotion of people’s welfares is inevitable.there are about 54000 mw of various power plants in iran. the type of power plants includes gas, steam, combined, hydro and a very minute amount of wind mills. the per capita electricity production is about 2200 kwh. power plants can impose adverse environmental impacts during construction and utilization phases. envir...

Plants perform their own interests and purposes. in ways that afford invite specific human experiences. also complex biopolitical roles. With these multivalent understandings of plant performance mind, this introduction to the “Plant Performance” issue Performance Philosophy outlines editors’ broadly feminist approach challenges facing scholars artists field Critical Plant Studies. We present c...

the aim of this study was to investigate the effect of commercial herbal and chemical medicines on growth performance, serum lipids, intestinal selected bacterial population and intestinal morphology of broiler chickens. in this study, 450 day-old female broiler chickens (arian strain) were divided into 10 treatments with three replicates of 15 chicks per replicate. on day 14 of the experiment,...

the effects of two diets, a control diet (commercial feed with 39% crude protein) and an experimental diet (prepared based on 42% soybean meal with 38% crude protein), on growth performance of western white shrimp (litopenaeus vannamei) in six 0.4-ha-earthen ponds (three replications per treatment) with 25 per m2 density, were investigated. there was no significant difference in final weight (m...

Grazing is more than just defoliation of plants. The impact of herbivory affects ecosystem structure and function, both above and below ground. Ultimately, effects of herbivory are expressed to varying degrees at many levels of the ecosystem. Herbivory has been shown to affect plant physiology, morphology, and genetics. Plants have evolved many ways to avoid or tolerate herbivory. Whether plant...

reducing nitrogen status of floriculture plants is an effective tactic in pest management by decreasing host plant quality. life table parameters and population growth rate of aphis craccivora(hemiptera: aphidiae), as well as cosmetic and qualitative parameters losses associated with aphid infestation were evaluated in relation to n fertilization levels on gomphrena globosa, under greenhouse co...