نتایج جستجو برای: natural stabilization

تعداد نتایج: 531106  

Ashraf Fakhrju Elnaz Shaseb Moslem Najafi, Saba Ghaffary Tahereh Eteraf Oskouei,

Objective(s) In this study, effects of chronic administration of oral natural honey against ischemia/reperfusion (I/R)-  induced cardiac arrhythmias were investigated in isolated rat heart. Materials and Methods Male Wistar rats were divided into four groups (n= 10-14 rats in each group) and fed with natural honey (1%, 2% and 4% dissolved in the drinking water) for 45 days except for the con...

In this study, electronic structures of ground state of pure vanadium sub-nano clusters, Vn (n=2-5), and their interactions with small ligands for example CO and triplet O2 molecules are investigated by using density functional theory (DFT) calibration at the mPWPW91/QZVP level of theory. The favorable orientations of these ligands in interaction with pure vanadium sub-nano clusters were determ...

Journal: :جنگل و فرآورده های چوب 0
فاطمه موسوی دانشجوی کارشناسی ارشد مهندسی جنگل، دانشکدة منابع طبیعی، دانشگاه تهران، کرج، ایران احسان عبدی دانشیار دانشکدة منابع طبیعی، دانشگاه تهران، کرج، ایران علی رئیسی استبرق استادیار گروه مهندسی آبادانی و آبیاری، دانشگاه تهران، کرج، ایران باریس مجنونیان استاد دانشکدة منابع طبیعی، دانشگاه تهران، کرج، ایران

stabilization, alter and improvement of engineering properties of soil are for providing predetermined goals. the most important aim of soil stabilization is increasing long term soil strength, but in very wet and loos lands the other aim of soil stabilization, is to decrease plasticity characteristic of soil, which are tested by atterberg limits tests. since the road soils of namkhane district...

Journal: :محیط شناسی 0
سید حجت موسوی دانشجوی دکترای ژئومرفولوژی، گروه جغرافیای طبیعی، دانشگاه اصفهان مسعود معیری دانشیار ژئومرفولوژی، گروه جغرافیای طبیعی، دانشگاه اصفهان عبداله سیف استادیار ژئومرفولوژی، گروه جغرافیای طبیعی، دانشگاه اصفهان عباسعلی ولی استادیار ژئومرفولوژی، گروه مهندسی منابع طبیعی، دانشگاه کاشان.

occurrence of environmental issues and loss of natural resources are the important causes of risk and crisis management strategies of the environment. the influx of quicksand into settlements, communication ways and economical installations is one of the most important environmental problems in the eastern north of toroud. the environmental system reacts against of quicksand stress, and is tryi...

2003
Guoping Lu Yufan Zheng Cishen Zhang

This paper considers the globally asymptotic stabilization problem of multi-input multi-output bilinear systems with undamped natural response. Under the conditions for asymptotic stabilization by static state feedback control and system detectability, two output dynamic feedback controllers with saturation bounded control are constructed. The global asymptotic stability of the closed-loop syst...

Journal: :Construction and Building Materials 2021

The importance of earthen construction materials lies in their widespread availability combined with a low embodied energy. Chemical stabilizers are commonly used to improve durability and mechanical performance. main drawbacks the high environmental impact production, loss recyclability, possible reduction raw earth’s hygrothermal properties. Historically stabilization was achieved by use diff...

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