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Health care associated infections, antibiotic resistance and clinical outcome: A surveillance study from Sanandaj, Iran

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World Journal of Clinical Cases 2016年第3期4卷 63-70页

作者： jafar soltani Bahman Poorabbas Neda Miri Jalal Mardaneh Department of Pediatrics Faculty of Medicine Kurdistan University of Medical Sciences Alborzi Clinical Microbiology Research Center Nemazee Hospital Shiraz University of Medical Sciences Besat Tertiary Hospital Kurdistan University of Medical Sciences

AIM: To study the antibiotic susceptibility patterns of gram-negative healthcare associated bacterial infections at two tertiary hospitals in the Sanandaj city, Kurdistan Province, ***: From January 2012 to December 2012, all positive cultures from potentially sterile body fluids were gathered. They sent to professor Alborzi clinical microbiology center in Shiraz for further analysis and susceptibility testing. The antibiotic susceptibility was determined using the Kirby-Bauer method(disk diffusiontechnique). The Results were interpreted according to Clinical and Laboratory Standards Institute guidelines against a series of antimicrobials. World Health Organization definitions for Healthcare associated infections were ***: Seven hundred and thirty-two positive cultures were reported from both hospitals. Seventynine isolates/patients fulfilled the study criteria for healthcare associated gram-negative infections. The most frequent bacterial cultures were from the pediatric wards(52%). Serratia marcescens(S. marcescens)(38%) Escherichia coli(E. coli)(19%), Klebsiella pneumoniae(K. pneumoniae)(19%), Acinetobacter baumannii(6%), Enterobacter species(6%), Serratia odorifera(4%) and Pseudomonas species(5%) were the most frequently isolated organisms. The susceptibility pattern of common isolates i.e., S. marcescens, E. coli and K. pneumoniae for commonly used antibiotics were as follows: Ampicillin 3.3%, 6.7%, 20%; gentamicin 73.3%, 73.3%, 46.7%; ceftazidim 80%, 73.3%, 33.3%; cefepim 80%, 86.7%, 46.7%; piperacillin/tazobactam 90%, 66.7%, 86.7%; ciprofloxacin 100%, 73.3%, 86.7%; imipenem 100%, 100%, 100%, respectively. CONCLUSION: The most effective antibiotics against gram-negative healthcare associated infections are imipenem followed by ciprofloxacin. The resistance rate is high against ampicillin and cephalothin. The high mortality rate(46.1%) associated with S. marcescens is alarming.

关键词： Escherichia coli Klebsiella pneumoniae Serratia marcescens Extended-spectrum beta-lactamase Nosocomial infections Antibiotic susceptibility

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The Novel Adaptive Robust Speed Tracking Controller for a PM Synchronous Motor Drive Based on Input-Output Feedback Linearization

The Novel Adaptive Robust Speed Tracking Controller for a PM...

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11th International Conference on Electrical Machines and Systems

作者： Sayed Mahdi Fazeli Hossein Abootorabi Zarchi jafar soltani Hew Wooi Ping Faculty of Engineering University of MalayaKuala-LumpurMalaysia Faculty of Electrical and Computer Engineering Isfahan University of TechnologyIsfahan-Iran

＜正＞A nonlinear adaptive robust speed tracking controller is presented for a three-phase surface mounted permanent magnet synchronous motor（SPMSM）considering the control strategy of maximum torque control（MTC）related to this *** the motor iron losses,the proposed controller is designed based on combination of input-output feedback linearization（IOFL）control and adaptive sliding mode *** proposed adaptive sliding mode controller estimates the unknown uncertainties without using sign（.）or sat（.）***,it reduces chattering or steady state error *** addition,in order to make the drive system control robust to load torque disturbance,the stator current reference signal is predicted by another adaptive sliding mode controller that has no reaching phase and has a low sliding mode ***,the effectiveness and feasibility of the proposed control approach is demonstrated by computer *** results obtained confirm that the desired speed reference command is perfectly tracked in spite of motor parameter uncertainties and load torque disturbance.

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