نتایج جستجو برای: carrier rate
تعداد نتایج: 1024006 فیلتر نتایج به سال:
With the advancement of technologies in communication field, high data rate in addition to both power efficiency and lower bit error rate have always been areas of interest for scientist. The ever increasing demand of high data rate can be fulfilled by the single carrier modulation along with the tradeoff between the power efficiency and bit error rate. It is very difficult to achieve high data...
In the last decade, wireless communications have become increasingly popular as powerful and costeffective platforms for mobile communications. According to the demand of wireless communications field there should be high data rate in addition to both power efficiency and lower bit error rate. This demand of high data rate can be fulfilled by the single carrier modulation with compromising the ...
in this study, feasibility of upgrading and retrofitting municipal wastewater treatment plantswas investigated at laboratory scale using moving bed biofilm reactor (mbbr) process. for this purpose,an aerobic pilot was operated for nearly one year in different conditions, in which a moving bed carrier with aspecific biofilm surface area of 500 m2/m3 and a filling rate of 60% was utilized. system...
Background and purpose: This study investigated the effect of different HLBs on these nanoparticles using spironolactone solid lipid nanoparticles. Materials and methods: The spironolactone loaded SLN was prepared by emulsion/solvent evaporation technique followed by ultrasonication. In this study, Palmitic acid was used as carrier. Different weight ratio of drug, carrier, Span60 and Tween80 w...
The goal of this research project was to further the development of an electromechanically controlled variable-orifice nozzle by creating an electronic control system and then evaluating that system based on step and ramp inputs. The control system was developed in a programming environment that combined an electronic data acquisition system and actuator with pressure and flow sensors. A propor...
objective(s): researchers have intended to reformulate drugs so that they may be more safely used in human body. polymer science and nanotechnology have great roles in this field. the aim of this paper is to introduce an efficient drug delivery vehicle which can perform both targeted and controlled antibiotic release using magnetic nanoparticles grafted ph-responsive polymer. methods: fe3o4 na...
Objectives: To determine whether the point prevalence of hepatitis B surface antigen (HBsAg) carriers varies with maternal age, and to assess the impact of hepatitis B virus carrier status on pregnancy and perinatal outcomes. Methods: A total of 9526 patients who had delivered in Queen Elizabeth Hospital in Hong Kong between 1 October 2010 and 31 December 2011 were included in this retrospectiv...
Background: Escherichia coli (E.coli) bacteria are member of Enterobacteriaceae which are one of the common causes of urinary tract infections. Beta-lactamase enzymes are important factors for antibiotic resistance of beta-lactam family in gram-negative bacteria. According to increasing rate of urinary tract infections due to antibiotic resistant E. coli, the aim of this study was to study the ...
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