نتایج جستجو برای: fault incidence

تعداد نتایج: 306725  

Journal: :journal of electric power and energy conversion systems 0

superconductor fault current limiter (sfcl) is an effective device to suppress high fault currents. this paper presents a comparative study of resistive and inductive fault current limiters from transient stability point of view.  appropriate location and type of the limiters in a hv substation is selected by a qualitative approach based on the equal area criterion. study system is simulated by...

K. Gorgani Firouzjah

This paper presents a novel fault location method for series compensated transmission lines. It is established based on synchronized voltages sampling and Thevenin impedance from both ends of series compensated transmission line. The method is based on the use of phasor measurement units (PMU) technology which is aimed to be independent of current measurements, fault type, fault resistance, fau...

Journal: :Journal of psychiatric research 2015
Paula A Aduen Michael J Kofler Daniel J Cox Dustin E Sarver Erin Lunsford

Although not often discussed in clinical settings, motor vehicle driving is a complex multitasking endeavor during which a momentary attention lapse can have devastating consequences. Previous research suggests that drivers with high incidence psychiatric disabilities such as ADHD contribute disproportionately to collision rates, which in turn portend myriad adverse social, financial, health, m...

ژورنال: حقوق پزشکی 2019

Medical treatments are divided to essential and unnecessary treatments. Treatments and cosmetic surgery in the category of unnecessary treatments and reconstructive surgery and other treatments for example heart, liver and kidney transplant surgery placed in the category of essential treatments. Compensation basis in essential treatments in Iranian law, among basics of the negligence, strict li...

By increasing the penetration level of the inverter-based distributed generations (IBDGs) in power system, their fault ride through capability has become one of the essential issues of the new grid codes. This paper proposes a novel method to limit inverter fault currents which are used in DGs. To achieve FRT, interface-inverter operates as a controlled voltage source during normal operation as...

In this paper, a new fast and accurate method for fault detection, location, and classification on multi-terminal DC (MTDC) distribution networks connected to renewable energy and energy storages presented. MTDC networks develop due to some issues such as DC resources and loads expanding, and try to the power quality increasing. It is important to recognize the fault type and location in order ...

In this paper, a single-ended fault location method is presented based on a circuit breaker operation using the frequencies of traveling waves. The proposed method receives the required data from voltage traveling waves with the aid of Fast Fourier Transform (FFT) and Wavelet Transform. Then, the Artificial Neural Network (ANN) identifies fault type and determines its location. In order to eval...

Journal: :iranian journal of public health 0
mr. akbar b. aflaki ts. azoodani k. ghaffari mr. salimi

in this paper we carried out an exact statistics on the basis of total admission due to abortions, with following results: 1- abortion incidence is 14 of total admissions. 2- 46.8 of abortions were between the 8th and 12th weeks of gestation. 3- 42,038 of the patients with abortion were 24 years old or younger (younger than 25 years of age). 4- the abortion incidence is equal in different blood...

Journal: :avicenna journal of clinical microbiology and infection 0
masoud sabouri ghannad department of microbiology, research center for molecular medicine, faculty of medicine, hamadan university of medical sciences, hamadan, ir iran; department of microbiology, research center for molecular medicine, faculty of medicine, hamadan university of medical sciences, hamadan, ir iran. tel: +98-8118276295, fax: +98-8118276299 ghodratollah roshanaei department of biostatistics and epidemiology, modeling of noncommunicable diseases research center, school of public health, hamadan university of medical sciences, hamadan, ir iran mohammad yousef alikhani department of microbiology, faculty of medicine, hamadan university of medical sciences, hamadan, ir iran pegah alijani department of microbiology, research center for molecular medicine, faculty of medicine, hamadan university of medical sciences, hamadan, ir iran mahdi ghanbari sardari department of microbiology, research center for molecular medicine, faculty of medicine, hamadan university of medical sciences, hamadan, ir iran

background rabies has been reported as the most important endemic zoonotic disease in iran and still remains as a major public health problem. objectives the main objective of the current research was to study the epidemiology of animal bites in borujerd county in iran and to compare its prevalence to other parts of iran from april 2006 to september 2011. patients and methods the data were reco...

Journal: :مجله دانشکده پزشکی دانشگاه علوم پزشکی تهران 0
mh salari

pseudomembrane colitis (pmc) and antibiotic associated colitis (aac) are acute disease of the colon. in the case of in adequate treatment, the disease will often become chronic and my lead to the dysplasia of the epithelial cells of the infected areas. previously because of poor knowledge. treatment in this case, one of the method for treatment was surgical ablation of the large intestine while...

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