نتایج جستجو برای: layer potential temperatures of

تعداد نتایج: 21235372  

In this article, failure and fracture mechanisms in an aluminum alloy (which has been used in diesel internal combustion engines), with and without ceramic thermal barrier coatings, have been investigated under isothermal and non-isothermal fatigue loadings. In this research, the base material is an aluminum-silicon-magnesium alloy and the thermal barrier coating includes a metallic bond coat l...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده مهندسی عمران 1388

چکیده روش های متعددی برای برآورد رواناب حاصل از بارش در حوضه های آبریز وجود دارد. یکی از این روش ها استفاده از مدل های هیدرولوژیکی است. با استفاده از مدل های هیدرولوژیکی و شبیه سازی فرآیندهای هیدرولوژیکی می توان با صرف کمترین زمان و هزینه، رواناب و مولفه های دیگر چرخ? هیدرولوژیکی را برآورد کرد. از آنجا که در حوضه های آبریز اندازه گیری تمام کمیت های مورد نیاز برای تحلیل رواناب ممکن نیست، انتخاب...

حسن زاده نفوتی, محمد , خواجه بافقی, حبیب ا... ,

Today, one of the major problems of flood control projects is watershed prioritizing for resource allocation and structural and non-structural practices. Due to the lack of hydrometric stations in many watersheds, is difficult determining the participation of sub catchments to create flood. So study the affective factors in watersheds through models such as multi-criteria decision analyzing sys...

Journal: :international journal of advanced biological and biomedical research 2014
navid adibifard mehrdad esfandiari s.r. hassanpour avanji zohreh baniabbass

studying of climatic elements  are one of the most important factors   influencing on agricultural crops  production and developing of agriculture activities in every region that led to increasing production . by studying of agro climatology  can be determined potential facilities in different areas  and used optimum of  facilities . this research was established  by determining  temperature po...

Journal: :حفاظت گیاهان 0
ابوالفضل درخشان جاوید قرخلو

a better understanding of the factors influencing the germination of weed seeds could facilitate the development of more effective cultural weed management practices. the aim of this research was to determine the effects of environmental factors on seed germination of cutleaf groundcherry (physalis angulata l.). results showed that application of gibberellic acid (ga3) was effective treatment f...

Journal: :civil engineering infrastructures journal 0
mahmoud hassanlourad assistant professor, faculty of engineering, imam khomeini international university, qazvin, iran. maryam vosoughi m.sc. student, faculty of engineering, imam khomeini international university, qazvin, iran. arash sarrafi m.sc. student, faculty of engineering, imam khomeini international university, qazvin, iran.

in this paper, the grouting ability of sandy soils is investigated by artificial neural networks based on the results of chemical grout injection tests. in order to evaluate the soil grouting potential, experimental samples were prepared and then injected. the sand samples with three different particle sizes (medium, fine, and silty) and three relative densities (%30, %50, and %90) were injecte...

Journal: :desert 2011
m.t. dastorani h. afkhami

in recent decades artificial neural networks (anns) have shown great ability in modeling and forecasting non-linear and non-stationary time series and in most of the cases especially in prediction of phenomena have showed very good performance. this paper presents the application of artificial neural networks to predict drought in yazd meteorological station. in this research, different archite...

Amir Baniassadi Baniassadi Behrang Sajadi

Energy crisis, global warming and other environmental issues are what motivate researchers to find new strategies to reduce energy consumption in buildings. Recently, using phase change materials (PCM) in the building’s envelopes has drawn significant attention as an energy-saving method, which helps in increasing the building’s thermal capacity. In the present research, the effects of the main...

Journal: :Materials Science and Engineering A-structural Materials Properties Microstructure and Processing 2023

Multi-layer friction surfacing (MLFS) is a solid state layer deposition technology for metals. In order to make use of the potential MLFS as additive manufacturing, material properties built structures have be investigated and understood in detail. This study presents comprehensive analysis mechanical deposited from micro-flat tensile testing (MFTT) at elevated temperatures. The specimens obtai...

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