نتایج جستجو برای: production peak
تعداد نتایج: 737692 فیلتر نتایج به سال:
this study was conducted to investigate performance of native chickens produced in the centre of production and breeding of native chicken of isfahan in rural areas of isfahan province by using 1440 native pullets with age of 45 days in 4 towns and 2 climate zone of warm and cold. this study employed by coworking 60 rural families that 24 pullets with age of 45 days with ratio of 5 hen to 1 roo...
the objective of this study was to consider economic consequence of delayed conception of milking cows in large dairy farms in iran. optimum open days and milk production at peak were assumed to be 110 days and 45 kg respectively. price of milk, feed, semen and hormones were calculated based on average prices of autumn, 2013. results of this study showed that increasing days in milk (dim) from ...
Recently, imbalances in the electricity production and consumption in Iran, have caused critical situations at specific times of the year; meanwhile, the residential sector, with a 51 percent share, is the main reason for peak demand crisis. According to the international experiences, it can be hoped that by revising the residential electricity tariff structure, consumption pattern in this sect...
the purpose of the present study was to investigate the effect of task-based instruction of vocabulary on the receptive and oral productive acquisition of english vocabulary and compare the results with those obtained from the traditional method. the method and procedure applied in this study was as follows: after the implementation of opt, a group of sixty female students were chosen. the stu...
Recently, imbalances in the electricity production and consumption in Iran, have caused critical situations at specific times of the year; meanwhile, the residential sector, with a 51 percent share, is the main reason for peak demand crisis. According to the international experiences, it can be hoped that by revising the residential electricity tariff structure, consumption pattern in this sect...
gamma irradiation is routinely used for suppression of lymphocyte function in transfusion and transplantation procedures. in recent years, some investigators focused on the effects of ionizing radiation on special aspects of lymphocyte function and considered the possibility of its clinical application for treatment of some immunological disorders. in this study, we evaluated the effects of fiv...
Following Hubbert’s successful prediction of the timing of US peak oil production, Hubbert’s model has been used extensively to predict peak oil production elsewhere. However, forecasts of world and regional peak oil and natural gas production using Hubbert’s methodology usually have failed, leading to the implicit belief that such predictions always will fail and that we need not worry about f...
Seasonal fluctuations in zooplankton abundance between July 1973 and July 1974 showed a clear peak in total copepods and rotifers in February-March, and a less pronounced peak in July-August. Standing crop and production estimates for the two dominant copepods, Acarfia fonsa and Eurytemoru uffinis, revealed that the February-March peak was primarily E. affinis and sustained far higher biomass (...
Plants show phenological responses to herbivory. Some enclosure experiments have demonstrated that the onset of the peak flowering season is dependent on grazing pressure. We constructed a mathematical model using Pontryargin's maximum principle to investigate changes in flowering time by examining shifts in resource allocation from vegetative to reproductive plant components. We represented a ...
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