نتایج جستجو برای: source of resistance
تعداد نتایج: 21230372 فیلتر نتایج به سال:
the present study aimed to evaluate the antibiotic resistance pattern of escherichia coli strains isolatedfrom animals to ascertain the levels of antibiotic resistance pervasiveness. a total of 28 e. coli strains wereisolated from faecal samples and the antibiotic resistance pattern of e. coli strains was determined by meansof disc diffusion assay. the resistance pattern determined for all stra...
any change in the refractive index of a laser active medium can lead to serious degradation of beam quality, laser beam modes, laser performance and variation in the intensity distribution. alteration in the refractive index of laser active medium is especially notable in high power lasers. it is clear that in the laser beam production, the pumping agent induces a great amount of heat which...
در چند سال اخیر نیاز به استفاده از منابع انرژی تجدیدپذیر نظیر انرژی خورشیدی، پیل های سوختی و انرژی بادی افزایش یافته است. از این میان پیل های سوختی به دلیل عدم آلودگی، بازدهی بالا و مستقل بودن از شرایط آب و هوایی، منابع انرژی بسیار مفیدی هستند. روش مرسوم برای کنترل این پیل ها استفاده از یک مبدلdc/dc می باشد.در کاربردهای سه فاز مانند درایو موتورهای ac، یک اینورتر هم باید در مسیر مبدل dc/dc قرار ...
in this project, 4,4?-methylenebis(3-chloro-2,6-diethyl trimellitimidobenzene) as a diacid, was prepared by the reaction of trimellitic anhydride (tma) with 4,4?-methylenebis(3-chloro-2,6-diethylaniline) (mcdea). the novel poly(amide-imide) (pai) was synthesized from the reaction of 4,4?-methylenebis(3-chloro-2,6-diethyl trimellitimidobenzene) as a diacid with mcdea under green condition using ...
In this paper, we reviewed researches about the titanium nitride (TiN) and titanium carbide (TiC) single and multilayer coatings. These coatings were deposited by the plasma assisted chemical vapor deposition (PACVD) technique. Plasma-based technologies are used for the processing of thin films and coatings for different applications such as automobile and aerospace parts, computer disc drives,...
in recent years dietary fibers have been considered due to its beneficial effects. since the amount of fiber in dietary diet is usually less than the recommended amount (30 gr/day), fortification of bread with fiber can play an important role to achieve its health benefits. this project was studied to investigate on the possibility of supplementation of flour with dietary fibers. two different ...
This study has examined the properties of Crofer 22APU stainless steel produced by mechanical alloying for using as interconnect plates in solid oxide fuel cells.This alloy was produced by mixing the source powders and mechanical alloying for 40 hours. For creating a sample with high density, spark-plasma sintering was applied at 1100 °C and 50 Mpa stress for 10 minutes. To achieve the des...
Background: Nosocomial infections are an important cause of hospital mortalities. Staphylococcus aureus (S. aureus) carriers among medical staff are an important source of nosocomial infections. The purpose of this study was to investigate the prevalence of the nasal carriers of S. aureus and antibiotic resistance in staff of Nikuee Hospital, Qom, Iran. Materials and Methods: In this cross-s...
Background & Objective: Genus Salmonella has more than 2400 serotypes. The two major groups are S.enterica and S.bongori. Important serotypes are situated in S.enterica group. Antibiotic therapy in salmonellosis is restricted to typhoid fever and acute infections. After the first reporting of resistance in S.Typhimurium DT 104, nowadays, developing of resistance in Salmonella, specially, ESBL p...
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