نتایج جستجو برای: space application

تعداد نتایج: 1219782  

ژورنال: مواد پرانرژی 2015

The purpose of this paper is to review the application and the status of mono propellant Nitrous oxide (N2O) as a high energetic material in the space industry. Therefore Nitrous oxide is introduced and its usage in propulsion systems is discussed. The results suggest that this compound lies in the development of the miniaturization concept of space propulsion systems. Because of this combinati...

A.A. Tabatabai Adnani M. Rabbani ‎R. Arab,

In this article, we use two concepts, measure of non-compactness and Meir-Keeler condensing operators. The measure of non-compactness has been applied for existence of solution nonlinear integral equations, ordinary differential equations and system of differential equations in the case of finite and infinite dimensions by some authors. Also Meir-Keeler condensing operators are shown in some pa...

Journal: :مهندسی مکانیک مدرس 0
مهدی نصرآبادی هیات علمی دونال فین هیات علمی

0

Journal: :معماری و شهرسازی 0
سیدحسین بحرینی استاد دانشکده شهرسازی، پردیس هنرهای زیبا، دانشگاه تهران سوده تقابن کارشناس ارشد طراحی شهری، پردیس هنرهای زیبا، دانشگاه تهران

the complexity of today’s subject matter of urban design is to the extent that no urban designer may be able to consider all relevant issues and their interactive impacts simultaneously, and thereby make appropriate decisions. application of computer techniques has made the analysis of complex issues in urban design possible. this has been a great help for urban designers. space syntax method i...

Journal: :iranian journal of otorhinolaryngology 0
hamidreza abtahi department of otorhinolaryngology, isfahan university of medical sciences, isfahan, iran. afrooz eshaghian department of otorhinolaryngology, isfahan university of medical sciences, isfahan, iran. farzaneh abootalebian department of otorhinolaryngology, isfahan university of medical sciences, isfahan, iran.

introduction: lipomas of the larynx are very rare benign lesions; macroscopically, they resemble retention cysts, so their diagnosis is usually made after surgery.   case report: a rare case of pediatric paraglottic space lipoma in an 11-year-old boy is explained. the mass was mobile, soft, without fluctuation or pulsation. ct scan revealed a 5.7 cm cervical fat density with regional lymphadeno...

A consistency criteria is given for a certain class of finite positive measures on the surfaces of the finite dimensional unit balls in a real separable Hilbert space. It is proved, through a Kolmogorov type existence theorem, that the class induces a unique positive measure on the surface of the unit ball in the Hilbert space. As an application, this will naturally accomplish the work of Kante...

A. Ebrahimi, and M. Mirshams, S. A.A. Mousavian,

The rapid growth of space utilization requires extensive construction, and maintenance of space structures and satellites in orbit. &#10This will, in turn, substantiate application of robotic systems in space. In this paper, a near-minimum-time optimal control law is developed for a rigid space platform with flexible links during an orientating maneuver with large angle of rotation. The time op...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید بهشتی - دانشکده علوم 1377

در این مجموعه قصد آن داریم که در زمینه کیهانشناسی کوانتومی پس از بدست آوردن معادله ویلر دویت از طریق کوانتش کانونیک ، با در نظر گرفتن یک مدل اسپینوری این معادله را در mini-spuper space دوبعدی r2 حل نمائیم، بطوریکه بتوان برای توابع موج اسپینورگونه بدست آمده، جریانی پایدار و نیز یک چگالی احتمال با مقدار مثبت و معین تعریف نمود.

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