نتایج جستجو برای: microbial population

تعداد نتایج: 798373  

The present study has used soil samples from Nigeria, contaminated with Brass crude-oil, to determine its biodegradation through enhanced biostimulation with cow dung and periodic aeration. Over a period of twenty-eight days, the hydrocarbon-utilizing bacteria (HUB) and hydrocarbon-utilizing fungi (HUF) have been counted and identified. Results from biodegradation of the brass crude-oil over th...

Journal: Pollution 2018

The present study has used soil samples from Nigeria, contaminated with Brass crude-oil, to determine its biodegradation through enhanced biostimulation with cow dung and periodic aeration. Over a period of twenty-eight days, the hydrocarbon-utilizing bacteria (HUB) and hydrocarbon-utilizing fungi (HUF) have been counted and identified. Results from biodegradation of the brass crude-oil over th...

اسکندری, اکبر, بیگلو, مهدی, رفیعی, محمد,

Abstract Background& Objective: Today, with increasing population, reducing the per capita amount of water resources and increasing the physio-chemical and microbial contamination of water, water crisis is one of the major global problems .The purpose of this study was to evaluate the microbial quality of drinking water in the villages covered by Alborz province. Materials and Methods: This des...

Journal: :Applied and environmental microbiology 2015
Daniel J O'Sullivan Paul D Cotter Orla O'Sullivan Linda Giblin Paul L H McSweeney Jeremiah J Sheehan

We sought to determine if the time, within a production day, that a cheese is manufactured has an influence on the microbial community present within that cheese. To facilitate this, 16S rRNA amplicon sequencing was used to elucidate the microbial community dynamics of brine-salted continental-type cheese in cheeses produced early and late in the production day. Differences in the microbial com...

Journal: :Philosophical transactions of the Royal Society of London. Series B, Biological sciences 2013
Jennifer L Macalady Trinity L Hamilton Christen L Grettenberger Daniel S Jones Leah E Tsao William D Burgos

Mechanisms that govern the coexistence of multiple biological species have been studied intensively by ecologists since the turn of the nineteenth century. Microbial ecologists in the meantime have faced many fundamental challenges, such as the lack of an ecologically coherent species definition, lack of adequate methods for evaluating population sizes and community composition in nature, and e...

2015
Joshua Tasoff Michael T. Mee Harris H. Wang Rodrigo Huerta-Quintanilla

A large fraction of microbial life on earth exists in complex communities where metabolic exchange is vital. Microbes trade essential resources to promote their own growth in an analogous way to countries that exchange goods in modern economic markets. Inspired by these similarities, we developed a framework based on general equilibrium theory (GET) from economics to predict the population dyna...

2015
Aud Larsen Jorun K Egge Jens C Nejstgaard Iole Di Capua Runar Thyrhaug Gunnar Bratbak T Frede Thingstad

A minimum mathematical model of the marine pelagic microbial food web has previously shown to be able to reproduce central aspects of observed system response to different bottom-up manipulations in a mesocosm experiment Microbial Ecosystem Dynamics (MEDEA) in Danish waters. In this study, we apply this model to two mesocosm experiments (Polar Aquatic Microbial Ecology (PAME)-I and PAME-II) con...

Journal: :مجله انسان، محیط زیست و ارتقاء سلامت 0
saeid nazemi department of environmental health engineering, school of public health, shahroud university of medical sciences, shahroud, iran jaber veganeh urmia university of medical sciences - faculty of nursing & health shima mohammadkhani shahroud university of medical sciences, shahroud, iran

background; providing safe drinking water is a prime concerninany community. this analytical study was carried out to evaluate the microbial quality of drinking water in rural areas of northeastern iran. methods;the water microbial quality was determined in all villages (a population of 53047 people), in 3 rounds and based on 3 measurements, i.e. total coliform, fecal coliform, and heterotrophi...

2017
Jaeyun Sung Seunghyeon Kim Josephine Jill T. Cabatbat Sungho Jang Yong-Su Jin Gyoo Yeol Jung Nicholas Chia Pan-Jun Kim

A system-level framework of complex microbe-microbe and host-microbe chemical cross-talk would help elucidate the role of our gut microbiota in health and disease. Here we report a literature-curated interspecies network of the human gut microbiota, called NJS16. This is an extensive data resource composed of ∼570 microbial species and 3 human cell types metabolically interacting through >4,400...

ژورنال: علوم آب و خاک 2012
فایز رئیسی‌, , مهشید منصورزاده, ,

The application of herbicides as organic chemical compounds to control pest and weeds may affect the population and activity of microorganisms, and this may have an influence on biochemical processes that are important for soil fertility and plant growth. The primary objective of this study was to evaluate different loading rates of eradican (EPTC) on soil microbial biomass C and N, microbial b...

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