نتایج جستجو برای: structure dynamics
تعداد نتایج: 1943716 فیلتر نتایج به سال:
The 25-35 fragment of the amyloid β (Aβ) peptide is a naturally occurring proteolytic by-product of its larger parent molecule that retains the amyloid characteristics and toxicity of the full length parent molecule. Aggregation of this peptide occurs rapidly in aqueous solutions and thus characterization of its folding process is very difficult. In the present study, early stages of Aβ(25–35) ...
in this work, the thermal reaction of aluminum (al) and nickel oxide (nio) was investigated by molecular dynamics simulations. some effective features of reaction such as reaction temperature, the reaction mechanism, and diffusion rate of oxygen into aluminum structure were studied. reaxff force field was performed to study the al/nio thermite reaction behavior at five different temperatures (5...
The present work demonstrates the successful application of a simple active vibration control procedure based on structural dynamics. Based on mathematical and structural dynamics’ theories, the appropriate locations of sensor and actuator locations of the smart structure are predicted. Also, the optimum value of actuator force which controls the structural vibrations as quickly as it is possib...
The authors studied and analyzed various concepts and approaches to company value management. They described the advantages and disadvantages of the leading traditional approaches to assessing the value of an enterprise and proposed a model of the dynamics of the company's value, taking into account the ownership structure, explaining the mechanism of the influence of the company's ownership st...
this study investigated how group formation method, namely student-selected vs. teacher-assigned, influences the results of the community model of teaching creative writing; i.e., group dynamics and group outcome (the quality of performance). the study adopted an experimental comparison group and microgenetic research design to observe the change process over a relatively short period of time. ...
abstract: the present thesis includes ; one preface and 11speeches , that each speech considered in different researches . the prefact part , studied grammer back ground , the first speech considered a brief description about grammatical credits . the second speech considered the different typs of sentences , from structure and meaning points of view . the third speech considered the verb es...
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مطالعه دینامیک مولکولی پایداری و ساختاری دو فاز جامد آسپیرین و خواص محلول آن در حلال های آب و متانول
دینامیک مولکولی (md) یک نوع شبیه سازی کامپیوتری میباشد که در آن اتم ها و مولکول ها اجازه مییابند برای یک گام زمانی تحت قوانین شناخته شده ی فیزیک برهمکنش داشته باشند و تصویری از حرکت اتم ها را به دست می دهد . از این روش برای مطالعهی بسیاری از سیستم های فیزیکی استفاده میشود. در این پایان نامه از این روش برای شبیهسازی دو فاز حالت جامد آسپیرین? دارویی که امروزه موارد مصرف زیادی برای آن شناخته ...
in this paper, the problem of finite time stabilization for guidance system is investigated and a novel nonlinear guidance law against maneuvering targets is proposed based on the principles of parallel navigation. the proposed law is developed using two variable structure control techniques. by applying finite time integral sliding mode and combining it with terminal sliding mode, a new guidan...
investigation on structure and dynamics of natural forest ecosystems is an important issue for silvicultural decisions. the aim of this study is to analysis dynamics and structure of a beech stand during 5-year period in the shast kalateh forest in the caspian region, north of iran. data were collected from a 16.9ha permanent research plot established in a natural unlogged stand in 2006. all li...
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