نتایج جستجو برای: multiple resistant to metals

تعداد نتایج: 10838767  

2015
Vandana Daware Rajendra Patil W. N. Gade

The pollution of the environment with toxic heavy metals is spreading throughout the world along with industrial progress. The present study deals with isolation, identification and characterization of heavy metal tolerant bacteria. Heavy metal tolerating bacteria was isolated from Mula river, Chinchwad, Pune, Maharashtra, India. On the basis of morphological, biochemical, 16S rDNA gene sequenc...

A Farahmand A KHosravan M.R SHekibaei S Zare

Background & Aims: Today, toxic effluents have created ecological and health problems in and around the industrial cities resulting in death of nearby living organisms. The aim of this research was to increase the elimination of copper and zinc from copper factory effluents in Kerman/Iran through mutation inducing in metal-resistant bacteria by using Acriflavine, Acridine orange and Ethidium br...

Journal: :Journal of anatolian environmental and animal sciences 2021

In this study is to determine the current heavy metal and antibiotic resistance levels of isolates taken from Gelevera Creek (Giresun). For purpose, surface water sediment were collected monthly four different stations starting April 2017 ending in March 2018. After Gr (-) (+) bacteria isolation selective media, 325 isolated tested for their against 4 metals. The these cadmium, copper, lead man...

Journal: :Proceedings of the National Academy of Sciences 2018

The aim of this study was to isolate, identify and determine the antimicrobial susceptibility of Clostridium perfringens (CP) isolates from acute necrotic enteritis of broiler chickens. All broiler carcasses diagnosed as necrotic enteritis (NE) were sampled, subjected to microbial tests and 40 isolates were identified according to standard procedures. The antimicrobial susceptibility of CP isol...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده زبانهای خارجی 1392

the aim of the current study was to investigate the relationship among efl learners learning style preferences, use of language learning strategies, and autonomy. a total of 148 male and female learners, between the ages of 18 and 30, majoring in english literature and english translation at islamic azad university, central tehran were randomly selected. a package of three questionnaires was ad...

Introduction: Pseudomonas aeruginosa is an opportunistic pathogen of clinical importance, particularly in immunocompromised and burn patients. This bacterium is becoming resistant to many antibiotics via intrinsic or acquired mechanisms. Mutations in anti-mutator genes, such as pfpI, can be a potential intrinsic mechanism of antibiotic resistance. This study aimed to evaluate the possible effec...

Journal: :محیط شناسی 0
آزاده نصرآزادانی کارشناس ارشد مهندسی کشاورزی خاک شناسی، عضو باشگاه پژوهشگران جوان دانشگاه آزاد اسلامی واحد خوراسگان آرزو طهمورث پور استادیار میکربیولوژی، دانشگاه آزاد اسلامی واحد خوراسگان مهران هودجی دانشیار خاک شناسی، دانشگاه آزاد اسلامی واحد خوراسگان

agricultural and specifically industrial activities have led to a substantial release of toxic heavy metals in the environment which can constitute a major hazard for ecosystem and human health. biosorption of heavy metals is one of the most effective technologies involved in the removal of toxic metals from contamination sites that has used in the last decade. population and microbial activity...

Journal: :Applied and environmental microbiology 2003
Gail M Teitzel Matthew R Parsek

A study was undertaken to examine the effects of the heavy metals copper, lead, and zinc on biofilm and planktonic Pseudomonas aeruginosa. A rotating-disk biofilm reactor was used to generate biofilm and free-swimming cultures to test their relative levels of resistance to heavy metals. It was determined that biofilms were anywhere from 2 to 600 times more resistant to heavy metal stress than f...

2014
Mark Dopson Francisco J. Ossandon Lars Lövgren David S. Holmes

All metals are toxic at high concentrations and consequently their intracellular concentrations must be regulated. Extremely acidophilic microorganisms have an optimum growth of pH <3 and proliferate in natural and anthropogenic low pH environments. Some acidophiles are involved in the catalysis of sulfide mineral dissolution, resulting in high concentrations of metals in solution. Acidophiles ...

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