نتایج جستجو برای: 6 model
تعداد نتایج: 2929794 فیلتر نتایج به سال:
neospora caninum (n. caninum) is an apicomplexan parasite and causes abortion and congenital neosporosis in cattle worldwide. in this study, we evaluate the virulence of a n. caninum isolate on mouse strain c57bl/6. six groups of five mice c57bl/6 were intraperitoneally inoculated with 1 × l07, 1.5 × l07, 2 × l07, 3 × l07 and 4 × l07 tachyzoites and a control inoculum of dmem, respectively. cli...
over the past decades a number of approaches have been applied for forecasting mortality. in 1992, a new method for long-run forecast of the level and age pattern of mortality was published by lee and carter. this method was welcomed by many authors so it was extended through a wider class of generalized, parametric and nonlinear model. this model represents one of the most influential recent d...
اگرکیفیت معلم کلاس برای بهبودیادگیری دانش آموزحیاتی است،پس کیفیت اساتیددانشجو-معلمان، یابه عبارتی معلمین معلمان نیزبرای پیشرفت آموزش بسیارمهم واساسی است.ناگفته پیداست که یک سیستم مناسب آموزش معلمان ،معلمین با کیفیتی را تربیت خواهدکرد.که این کار منجربه داشتن مدارس خوب، ودرنتیجه نیروی کارماهرتروشهروندبهتربرای جامعه خواهدشد. اساتیددانشجو-معلمان نقشی بسیارمهم را در سیستم اموزش معلمان درسراسرجهان ای...
abstract the present study was conducted to investigate the effect of using model essays on the development of writing proficiency of iranian pre-intermediate efl learners. to fulfill the purpose of the study, 55 pre- intermediate learners of parsa language institute were chosen by means of administering proficiency test. based on the results of the pretest, two matched groups, one as the expe...
control of sedimentation in dam reservoirs is considered to be one of the most important issues in exploitation of dams and increasing the their useful life. reservoirs act as traps for sediments and prevent transport of sediment to the river. the deposited sediment decreases the capacity of reservoirs so that they can not be in use any more. various methods dealing with removing part of the de...
a one dimensional dynamic model for a riser reactor in a fluidized bed catalytic cracking unit (fccu) for gasoil feed has been developed in two distinct conditions, one for industrial fccu and another for fccu using various frequencies of microwave energy spaced at the height of the riser reactor (fccu-mw). in addition, in order to increase the accuracy of component and bulk diffusion, instanta...
Done all A–1 Determine, with proof, the number of ordered triples (A1, A2, A3) of sets which have the property that (i) A1 ∪A2 ∪A3 = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, and (ii) A1 ∩A2 ∩A3 = ∅. Express your answer in the form 2357, where a, b, c, d are nonnegative integers. Solution: For each integer i from 1 to 10 you must put i in one of 6 sets: A1 ∩ A2 ∩ A3 or A1 ∩ A2 ∩ A3 or A1 ∩ A2 ∩ A3 or A1...
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