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Rapid detection of coliforms in drinking water of Arak city using multiplex PCR method in comparison with the standard method of culture(Most probably Number)

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Asian Pacific Journal of Tropical Biomedicine 2014年第5期4卷 404-409页

作者： Dehghan fatemeh Zolfaghari Mohammad Reza Arjomandzadegan Mohammad Kalantari Salomeh Ahmari Gholam Reza Sarmadian Hossein Sadrnia Maryam Ahmadi Azam Shojapoor Mana Najarian Negin Kasravi Alii Reza falahat saeed Department of Microbiology Qom BranchIslamic Azad University Tuberculosis and Infectious Research Center and Department of Microbiology Arak University of Medical Sciences Hygiene and Quality Control Office of Markazi Province Water and Wastewater Company Department of Biology Payame Noor University Molecular and Medicine Research Center Arak University of Medical Sciences Department of Microbiology Arak University of Medical Sciences Department of Microbiology Islamic Azad UniversitySciences and Research Branch

Objective:To analyse molecular detection of coliforms and shorten the time of ***:Rapid detection of coliforms by amplification of lacZ and uidA genes in a multiplex PCR reaction was designed and performed in comparison with most probably number(MPN)method for 16 artificial and 101 field *** molecular method was also conducted on isolated coliforms from positive MPN samples;standard sample for verification of microbial method certificated reference material;isolated strains from certificated reference material and standard *** PCR and electrophoresis parameters were changed for reducing the operation ***:Results of PCR for lacZ and uidA genes were similar in all of standard,operational and artificial samples and showed the 876 bp and 147 bp bands of lacZ and uidA genes by multiplex *** results were confirmed by MPN culture method by sensitivity 86%(95%CI:0.71-0.93).Also the total execution time,with a successful change of factors,was reduced to less than two and a half ***:Multiplex PCR method with shortened operation time was used for the simultaneous detection of total coliforms and Escherichia coli in distribution system of Arak ***'s recommended to be used at least as an initial screening test,and then the positive samples could be randomly tested by MPN.

关键词： Water Coliforms PCR Rapid detection

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Fracture permeability estimation utilizing conventional well logs and flow zone indicator

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Petroleum Research 2022年第3期7卷 357-365页

作者： Hassan Bagheri Reza falahat Faculty of Petroleum Engineering Sahand University of TechnologyTabrizIran Well logging Department National Iranian Drilling CompanyAhvazIran

Characteristics of the natural open fractures on the oil and gas reservoirs is crucial in drilling and production planning. Direct methods of fractures studies such as core analysis and image log interpretation are usually not performed in all drilled wells in a field. Therefore, in absence of these data, the indirect methods can play an important role. In this study, an integrated algorithm is introduced to identify the fractures and estimate its permeability employing conventional well logs. First, open fractures were identified and their properties including density, aperture, porosity and permeability were estimated using FMI log. Subsequently, the fracture index log (FR_Index) was estimated utilizing conventional logs including density, micro-resistivity, sonic (compressional, shear and stoneley slownesses), and caliper logs. After that, the fracture index permeability was estimated by improving the FZI permeability equation. The coherence coefficient between two estimated fracture permeability logs is 0.66. A good correlation is observed on the high permeability zones, but the lower correlation on the low permeability zones. It is notified that, in the high fracture permeability zones, the conventional logs are heavily impacted by fracture permeability. However, due to lower vertical resolution of conventional logs compared with the image logs, the conventional logs are less influenced by less dense fracture zones. However, this algorithm can be used with acceptable accuracy in all uncored and image log wells.

关键词： Fracture index Fractures permeability Flow zone index Conventional logs Image log

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The Necessity of an Integrated Sustainable Management and Monitoring System in the Tehran-Karaj Urban Region

The Necessity of an Integrated Sustainable Management and Mo...

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2011 World Congress on Engineering and Technology(CET 2011)

作者： M. Reza Shirazi Somaiyeh falahat Institute of Urban and Regional Planning Berlin University of Technology Berlin Germany Institute of Architecture Berlin University of Technology Berlin Germany

Tehran was a small town about 200 years ago, when it started to grow rapidly to adapt to the demands of westernization and modernization. New urban developments transformed the city into an economic hub, and attracted new migrants who changed the demographic as well as the structural characteristics of the city. In the ensuing years, Tehran was no more an isolated city, but an agglomeration of settlements socially and economically interrelated through an inefficient transportation system. The Tehran-Karaj urban region emerged. This paper intends to investigate the process of making the Tehran – Karaj urban region. It argues that this formation faces crucial problems and challenges and hence an unsustainable condition which never allows its inhabitants to benefit from the advantage of a practical "urban region". A main challenge, it will be spelled out, is the existing inefficient management system through which each urban unit is planned separately without concerning its connectivity to the other units. To tackle this issue, the establishment of an integrated sustainable management and monitoring system is highly required.

关键词： Tehran-Karaj urban region urban region sustainable management urban growth

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4~7岁儿童梅尼埃病

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临床耳鼻咽喉头颈外科杂志 2014年第7期28卷 473-477页

作者： KRISTER BRANTBERG MAOLI DUAN BABAK falahat 刘波张甦琳孔维佳 Department of Audiology and Neurotology Karolinska University HospitalStockholmSweden Department of Clinical Science Intervention and TechnologyKarolinska InstituteStockholmSweden 华中科技大学同济医学院附属协和医院耳鼻咽喉科武汉430022

本文对4例4~7岁开始患病且具有梅尼埃病症状的患儿临床数据和听-前庭检查结果进行回顾性综述,所有患儿均从较早年龄开始有自发性复发性（旋转性）眩晕、波动性低频感音神经性听力下降症状,可明确诊断为梅尼埃病。由于年龄较小,不能表达... 详细信息

本文对4例4~7岁开始患病且具有梅尼埃病症状的患儿临床数据和听-前庭检查结果进行回顾性综述,所有患儿均从较早年龄开始有自发性复发性（旋转性）眩晕、波动性低频感音神经性听力下降症状,可明确诊断为梅尼埃病。由于年龄较小,不能表达听觉症状,起初患儿并不符合梅尼埃病的诊断要求,但至其8岁时,4例患儿均主诉耳鸣和（或）患侧耳胀满感,因此符合美国耳鼻咽喉科学会（AAO）梅尼埃病诊断标准。即使缺乏主观听觉症状的信息,对具有特发性自发性复发性眩晕、听力图为波动性低频听力损失的幼儿仍可考虑为梅尼埃病。本报告提示梅尼埃病也可发生在幼儿。

关键词：颈静脉球圆窗前庭诱发肌源性电位

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