نتایج جستجو برای: protection system

تعداد نتایج: 2375387  

H. Moharrami, M.T. Shahrabi Farahani and H. Shourabi,

Marine structures are one of the most important and susceptible facilities in Iran due to corrosion. The two methods of Cathodic Protection, namely, the cathodic protection with sacrificial anodes and cathodic protection using impressed current, are widely used for corrosion protection. According to the former, sacrificial anodes are installed at several points in the structure. Position of the...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تهران - دانشکده حقوق و علوم سیاسی 1387

چکیده ندارد.

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهید بهشتی - دانشکده حقوق 1386

چکیده ندارد.

A Karataş , E Karataş ,

Water is a very important vital resource for all living organisms. A world without water can not be imagined. However the world is running out of its most precious resource. Water resources must be protected completely before the end of life on Earth, so today management of water resources has become the main agenda topic globally. Effective protection can be provided by sustainable water manag...

Journal: :Indonesian Journal of Electrical Engineering and Computer Science 2019

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی امیرکبیر(پلی تکنیک تهران) - دانشکده مهندسی برق 1387

حفاظت سریع و مطمئن شبکه های قدرت حین بروز خطاها و نیز سایر اغتشاشات شبکه، به منظور حفظ پایداری و محدود کردن خسارات وارده به سیستم یکی از مهم ترین موضوعاتی است که مهندسین برق در بهره برداری از سیستم های قدرت با آن مواجه هستند؛ از این رو مطالعه سیستم های حفاظتی در شبیه سازی ها از اهمیت ویژه ای برخوردار است. از طرف دیگر اثر نوسان کمیت های مختلفِ شبکه حین بروز اغتشاشات مختلف را نیز بایستی در تنظیم...

Journal: :jundishapur journal of health sciences 0
behzad fouladi dehaghi department of occupational health, school of public health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran; epartment of occupational health, school of public health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran. tel/fax: +98-6113738282 leila ibrahimi ghavamabadi department of environmental management, college of agriculture, ahvaz branch, islamic azad university, ahvaz, ir iran matare boazar department of occupational health, school of public health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran kambiz ahmadi angali department of bio-statistics, school of public health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran mehdi noori department of occupational health, school of public health, ahvaz jundishapur university of medical sciences, ahvaz, ir iran

conclusions the state of observed radiation protection principles was relatively in the weak level in the studied radiology departments especially in facilities such as ventilation system, radiography entrance, and darkroom situation. more important reason was usage changing of sections as radiology billet from related organizations. results the mean of radiation protection in the studied radio...

In this paper, the system stability-constrianted optimal protection coordination (SSCOPC) as stochastic problem in the microgrid with grid-connected and islanded operation modes, including renewable energy sources (RESs) and energy storage systems (ESSs), is presented. This problem to optimal regulation of the dual setting overcurrent relays (DSORs) and selecting the reactance size of fault cur...

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