نتایج جستجو برای: مدل hadgem2 es
تعداد نتایج: 196611 فیلتر نتایج به سال:
Abstract Agriculture is the backbone of Uganda’s economy, with about 24.9% contribution to gross domestic product (GDP) as per Uganda National Household Survey 2016/17. Agricultural productivity (yield hectare) still low due high dependence on rain-fed subsistence farming. Climate change expected further reduce yield hectare. Therefore, this study aims evaluate potential impact climate maize in...
در این تحقیق به مقایسه تحلیلی و عددی آبشار جریان برگشتی مدل R با آبشارهای Q QI سیستمهای چندجزیی پایدار پرداخته میشود. راستا برای اولین بار کدهای جهت طراحی منظور کد نرمافزار متلب نوشته شدهاند. نتایج نشان میدهد که دو جزء 1k 2k از خوراک Nc جزء، تعداد معدودی قابل تعریف است همگی حالات خاصی میباشد. همچنین یافتهها مجموع مقدار برش جزیی همیشه برابر یک است. طریق داده میشود صورتی میانگین ...
تغییر اقلیم یکی از مهمترین عوامل تاثیرگذار بر چرخه هیدرولوژیک میباشد. پژوهش حاضر تاثیر پدیده تغییر اقلیم را بر رواناب و رسوب حوضه آبخیز دهبار واقع در خراسان رضوی برای 30 سال آینده و با کمک مدل آماری LARS-WG و ابزار ارزیابی آب و خاک SWAT و مدل پیشبینی فرسایش آبی WEPP مورد ارزیابی قرار میدهد. ابتدا به منظور تولید دادههای هواشناسی دوره آتی در حوضه، مدل LARS-WG مورد واسنجی قرار گرفت و سپس از م...
Aerosols from the Sarychev volcano eruption (Kuril Islands, northeast of Japan) were observed in the Arctic lower stratosphere a few days after the strongest SO2 injection which occurred on 15 and 16 June 2009. From the observations provided by the Infrared Atmospheric Sounding Interferometer (IASI) an estimated 0.9 Tg of sulphur dioxide was injected into the upper troposphere and lower stratos...
Based on bias-corrected future projections from the Providing REgional Climates for Impacts Studies (PRECIS) regional climate model under both RCP4.5 and 8.5 scenarios over China, extreme climatic events at middle end of twenty-first century are investigated in this paper. The performance PRECIS is validated using comparisons with observations HadGEM2-ES projections, bias correction adds fideli...
Background: There are various methods to read out responses of a polymer-gel dosimeter, among which the Magnetic Resonance Imaging (MRI) technique is the most common one. Optimizing imaging protocols can have significant effect on the sensitivity and the dose resolution of polymer gel dosimeters. This study has investigated the effects of the number of echoes (NOE) and the echo time spacing (ES...
Background and Objectives: cyanides as carbon-nitrogen radicals are very toxic compounds and highly harmful to humans and aquatic organisms. The efficacy of eggshells (ES) was investigated in this research work as an adsorbent for the elimination of cyanide from polluted streams.Methods: In this experimental study, the capability of ES to adsorb cyanide ions was conducted using a series of batc...
Purpose: The aim of this research was to study the properties of factors secreted from astrocyte cells in suspension medium in direct differentiation of mouse embryonic stem cells into neural cells. Materials and Methods: Royan B1 mouse embryonic stem (ES) cells were used in this experiment. For differentiation of Es cells into the neural cells, the astrocyte-condition medium (ACM) of mouse fe...
One of the most important effective factors in the economic growth is the increased efficiency of manufacturing sectors. Thus, it is necessary to review and measure the efficiency of business units from a variety of dimensions to plan the increase of efficiency in future courses. One of these dimensions is the economics to scale (ES) referring to the concept of enhanced earnings due to the incr...
Abstract Regional climate models (RCM) are the main tools for change impacts assessment in hydrological studies. These models, however, often show biases when compared to historical observations. Bias Correction (BC) useful techniques improve projection outputs. This study presents a multi-criteria decision analysis (MCDA) framework compare combinations of RCM with selected BC methods. The comp...
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