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Article
Antibiotic susceptibility patterns of Escherichia coli isolates from patients with significant bacteriuria

Author: Firas Srhan Abd Al- Mayahi
Journal: Al-Qadisiyah Journal of pure science(quarterly) مجلة القادسية للعلوم الصرفة (فصلية). ISSN: 19972490 Year: 2015 Volume: 1 Issue: 20 Pages: 29-49
Publisher: Al-Qadisiyah University جامعة القادسية

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Abstract

The aim of this study was to the isolation and identification of E. coli bacteria from patients with significant bacteriuria and Antibiotic susceptibility patterns. During the period from March 2011 to May 2012, a total of 2000 urine samples were collected from patients with suspected UTI. Isolates were identified by traditional biochemical tests, and then confirmed by VITEK 2 system. 455 (22.8%) samples were recognized as significant bacteriuria. The study documented that E. coli is the most important uropathogen causing UTI and recovered from 207 (45.5%) patients. However, of the patients with significant bacteriuria, a total of 143 (31.4%) positive urine cultures were implicated in nosocomial infections. Additionally, 312 (68.6%) positive urine cultures were implicated in community-acquired infections. According to demographic data, it was observed that the number of patients with significant bacteriuria was higher in females, 309 (67.9%) compared to males, 146 (32.1%). The mean age of these patients was 39.1 years range from 2-90 years (standard deviation, 18.1years). Majority of patients with significant bacteriuria (269, 59.1%) were in the age group 20-50 years. Sensitivity of all isolates was tested against 23 Antibiotics. Results showed all isolates of E. coli were resistant 100% to ampicillin but sensitive100% to imipenem, the antibiotics resistance rate among the tested E. coli isolates ranged from 92.7%-74.9%, 69.6%-31.4% and 48.3%-10.2%, present to cephalosporins, fluoroquinolone and aminoglycosides respectively.


Article
Urinary Tract Infection Risk Assessment By Non- Thermal Plasma In Iraqis Patients

Author: Mohammed Ubaid Hussein (Ph.D ,Medical Physics )*, Rana Talb Mohsen(Master., Medicine Microbiology) **
Journal: Al-Kindy College Medical Journal مجلة كلية الطب الكندي ISSN: 18109543 Year: 2017 Volume: 13 Issue: 1 Pages: 86-91
Publisher: Baghdad University جامعة بغداد

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Abstract

Background: In the present study used device jet plasma needle with atmospheric pressure which generates non thermal plasma jet to measure treatment potent with plasma against pathogenic bacteria founded in UTI was inactivated with plasma at 10 sec, Objective:. This work included the application of the plasma produced from the system in the field of bacterial sterilization , where sample of Gram- negative bacteria (Escherichia coli) were exposed to intervals (1-10)second . Midstream Urine samples swabs were obtained from patients with urinary tract infections.Type of the study: Cross -sectional study.Methods: The work were used in this study obtained from studying 100 urine samples, the age of patients ranged between 10 years to 60 years. They were 60 females and 40 males. These samples were cultured on culture media to isolate bacterial colonies .After that, bacteria were identified by means of highly specific investigations Escherichia coli, plasma needle treatment is applied on bacteria through sterilization, and adhesion.Results : It was found that the percentage of the killing of Gram-negative bacteria (E.coli) was 100% at (10) second, also decreasing bacterial adhesion on epithelial cells, where numbers adhesion bacterial with uroepithelial cells decrease after treatment with plasma needle .Conclusion : From this work, it has been observed that applied voltage ,distance between plasma needle and treatment model as well as time treatment effect on inactivation bacteria and sterilization ,also it effect on decreasing bacterial adhesion on epithelial cells, where numbers adhesion bacterial with uroepithelial cells decrease after treatment with plasma needle .


Article
DESIGN OF STATE FEEDBACK CONTROLLER BASED BACTERIAL FORAGING OPTIMIZATION TECHNIQUE FOR SPEED CONTROL OF DC MOTOR
تصميم مسيطر التغذية المرتدة للحالة المعتمد على تقنية أمثلية تغذية البكتيريا للسيطرة على سرعة محرك تيار مستمر

Author: WISAM NAJM AL-DIN ABED وسام نجم الدين عبد
Journal: DIYALA JOURNAL OF ENGINEERING SCIENCES مجلة ديالى للعلوم الهندسية ISSN: 19998716/26166909 Year: 2015 Volume: 8 Issue: 1 Pages: 134-152
Publisher: Diyala University جامعة ديالى

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Abstract

The aim of this work is to design state feedback controller based on bacterial foraging optimization (BFO) technique for speed control of separately excited dc motor (SEDM). The social foraging behavior of Escherichia (E. Coli) bacteria has been used to optimize the controller performance by tuning it's parameters (state feedback controller gains K1 & K2).The SEDM state space model is simulated using MATLAB simulink toolbox. The SEDM is loading for different loads ranging from no-load to full-load to test the controller behavior and it's robustness for wide range of loadings variations. First the SEDM is simulated with feeding back the angular speed only (output feedback system), second is simulated with feeding back the armature current and angular speed (state feedback system). For both systems the controller's gains are tuned using BFO. The proposed controller results are compared with output feedback system results. The results show the superiority of state feedback controller based BFO versus output feedback system based BFO for SEDM speed control which leads to improve the transient and steady state performance of speed responses for SEDM with different loads.

الهدف من هذا العمل تصميم مسيطر التغذية المرتدة للحالة المعتمد على تقنية أمثلية تغذية البكتيريا (BFO) للسيطرة على سرعة محرك تيار مستمر منفصل التغذية (SEDM). تم الاعتماد على السلوك الاجتماعي لبكتريا من نوع القولونية (اي كولي) لتحسين أداء المسيطر عن طريق ضبط معاملاته (معاملات مسيطر التغذية المرتدة للحالة K1 & K2). تمت محاكاة نموذج فضاء الحالة (state space model) باستخدام صندوق الادوات لبرنامج الماتلاب.تم تحميل المحرك بعدة احمال مختلفة تتراوح من حالة اللاحمل الى حالة الحمل الكامل و ذلك لاختبار اداء المسيطر و متانته لمدى واسع من تغيير الاحمال. اولا تمت محاكاة محرك التيار المستمر منفصل التغذية بتغذية مرتدة للسرعة الزاوية فقط (نظام التغذية الراجعة للخرج)، ثانيا تمت محاكاته بتغذية مرتدة لتيار الجزء المنتج و السرعة الزاوية (نظام التغذية المرتدة للحالة). تم ضبط معاملات المسيطرات للنظامين باستخدام تقنية أمثلية تغذية البكتيريا. نتائج المسيطر المقترح تمت مقارنتها مع نتائج نظام التغذية الراجعة للخرج. اظهرت النتائج افضلية مسيطر التغذية الراجعة للحالة و المعتمد على تقنية أمثلية تغذية البكتيريا ازاء نتائج نظام التغذية الراجعة للخرج و المعتمد ايضا على تقنية أمثلية تغذية البكتيريا للسيطرة على سرعة محرك تيار مستمر منفصل التغذية و التي ادت الى تحسين الحالة العابرة و المستقرة لاستجابة السرع للمحرك لمختلف الاحمال.

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