نتایج جستجو برای: geohistory analysis
تعداد نتایج: 2824163 فیلتر نتایج به سال:
statement of the problem: in the evolution of orthodontics, the changes in soft tissue, especially smile line attracts considerable attention. purpose: the present study was carried out to evaluate the correlation of the smile line with the vertical parameters of anterior part of face. materials and methods: forty-six iranian adults, aged between 18-25 years were selected. five quantitative and...
the objectives of the present study were to evaluate spring wheat recombinant inbred lines (rils) of diverse origin by estimating genetic parameters viz., variability, character association, cluster analysis, and principal component analysis (pca) for spot blotch resistance and yield components at bhu agricultural research farm during 2010-2011. grain yield per plot was significantly and positi...
background: we are living in an era in which different branches of science are growing very rapidly. therefore, retrieving and summarizing all new valid findings on a specific subject is one of the most important priorities of scientists. the aim of the present article is to categorize different review studies within the health domain based on their approach to retrieving and summarizing origin...
there is no doubt that human being needs to become integrated with industry and industry needs to be progressed, daily. on the other hand, serious events in industrial units specially in oil industries has been shown that such damages and events are industry related ones. the consequence of such events and damages which resulted in chemical and poisoned explosions and loss of life and property ...
چکیده ندارد.
in this article the general non-symmetric parametric form of the incremental secant stiffness matrix for nonlinear analysis of solids have been investigated to present a semi analytical sensitivity analysis approach for geometric nonlinear shape optimization. to approach this aim the analytical formulas of secant stiffness matrix are presented. the models were validated and used to perform inve...
examining the impacts of data modification is considered as sensitivity analysis. a lot of studies have considered the data modification of inputs and outputs in dea. the issues which has not heretofore been considered in dea sensitivity analysis is modification in the number of inputs and (or) outputs and determining the impacts of this modification in the status of efficiency of dmus. this pa...
ارزیابی غیر مخرب ترانسفورماتورهای قدرت بوسیله بازبینی پارامترهای مختلف برای پیشگیری جلوگیری از خطاهای فاجعه بار و قطع برق برای مهندسان عامل بسیار ضروری می باشد.آنالیز گازهای حل شده dissolved gas analysis (dga) یکی از ابزارهای مهم برای شناسایی عیوب ترانسفورماتور است.روشهای نسبت متعارف استفاده شده در آنالیز گازهای حل شده فوایدی دارند از جمله مستقل از حجم گازهای در روغن هستند.اما مهمترین ضرر این ر...
هواپیما ترکیبی است از دو سیستم اصلی موتور و بدنه . انتخاب مناسب موتور برای بدنه ، موجب صرفه جویی در انرژی و هزینه ها و بهبود کارایی هواپیما می گردد. مسائل فراوانی در تطابق بین موتور و بدنه مطرح می باشند. در این پایان نامه طی چهار فصل سعی شده تا از نظر تئوری به مسائلی که در تطابق کارآیی موتور و بدنه مطرح هستندو روشی که برای انتخاب مناسب پارامترهای اولیه موتور بکار می رود،پرداخته شود. در همین راس...
determination of uranium in natural water and complex solutions using ion exchange chromatography: a combined procedure using ion exchange chromatography and uv-vis spectrophotometry techniques has been developed to measure uranum in natural water and complex solutions. after conditicing , one hundred milli liters of sample solutions have been passed through an ion exchange column,pachked with ...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید