نتایج جستجو برای: source of resistance
تعداد نتایج: 21230372 فیلتر نتایج به سال:
One of the key challenges of employing photovoltaic systems is to extract maximum power of the panels. This problem is known as maximum power point tracking (MPPT) technique. The MPPT stands for establishing situation in which output power of the panels reaches its maximum allowable power. In this context, this paper is to assess the technical requirements to achieve maximum output power of a n...
On the basis of an electrical analog, open circuit impedance functions were used to analyze the microcirculation. No specific structure need be assumed except a two-port, two-terminal network in which the major artery and vein supplying the tissue represent the input port and the two ends of the microvessel under study are the output port. The open circuit measurements were made by occluding mi...
introduction acetic acid bacteria are large group of obligate aerobic gram negative bacteria with the ability to oxidize ethanol to acetic acid (1). they are widely distributed in natural habitats and classified in family acetobacteraceae. members of this family are useful in industrial production of vinegar(2). acetic acid bacteria (aab) can use substrates as glucose, ethanol, lactate or glyc...
Background & Aims: The antimicrobial effects of nickel nanoparticles on some bacterial strains such as S. aureus and E.coli have been shown in limited studies. The aim of this study was to investigate the inhibitory effects of nickel nanoparticles on biofilm formation by mupirocin resistant S. aureus isolates. Materials & Methods: In this study, 150 S. aureus isolates were collected fro...
Abstract— A new technique is proposed in this paper in order to design a current source in bipolar technology with very high output resistance while minimising output capacitance. Such techniques are useful in Electrical Impedance Tomography applications. First of all, D.C. relationships are established. Then, an expression based on the analysis of a simplified equivalent circuit, is formulated...
H2S production has been proposed as a mechanism to explain bacterial resistance to antibiotics. In this work, we present evidence for the role of the cysJIH operon in resistance to ciprofloxacin mediated by H2S production with different sulfate as the only sulfur source. We found that the products of the cysJIH operon are involved in ciprofloxacin resistance by increasing both, the levels of H2...
Nowadays, many antibiotics are being used to control infectious diseases. Inappropriate use of antibiotics leads to emergence of resistant bacteria and problems such as a prolonged course of treatment. Medicinal plants and their derivatives, as a good source of treatment, are effective against drug resistance. In this study we have evaluated the antimicrobial activity of herbal essential oils o...
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