نتایج جستجو برای: in 1931 since then
تعداد نتایج: 17020479 فیلتر نتایج به سال:
the following null hypothesis was proposed: h : there is no significant difference between the use of semantically or communicatively translates scientific texts. to test the null hypothesis, a number of procedures were taken first, two passages were selected form soyrcebooks of food and nutrition industry and gardening deciplines. each, in turn, was following by a number of comprehension quest...
In the present work, the problem associated to the firm energy evaluation is treated as a non linear optimization model, which allows the representation of the productivity variation of the hydro plants. The proposed model takes into account the individualized representation of the plants and the historical series of flows since the month of January of 1931. The proposed optimization problem wi...
Biographical essay about the famous Soviet and Russian human geographer S.B. Shlikhter worked near 30 years in Institute of Geography Academy Sciences. He was born Moscow 1931 graduated from State University 1954. has been specialist field transportation geography, infrastructure economic geography World Ocean, integration European countries. The first two decades his creative life have devoted...
The post mortem records of the Philadelphia Zoological Garden are continuous since 1901. Reviews of these records for each decade through 1931 have shown that the frequency and types of malignant tumors did not change appreciably during this period (7, 8, 17). The frequency for all taxonomic groups was generally proportional to longevity, which often had been limited by nutritional disease. The...
abstract chickpea is weak in competition of weeds that damages to it at between 40 t0 60 percent. kermanshah province is one of the most important region for chickpea fields in iran. for these reosons, weed management is necessary in this crop. in order to evaluate of herbicides and stubble control on broad leave weeds control in chickpea. experiment was conducted in agricultural research stat...
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