نتایج جستجو برای: water bacteria

تعداد نتایج: 716450  

Journal: :Applied and environmental microbiology 1997
M G Weinbauer S W Wilhelm C A Suttle D R Garza

We investigated the potential for photoreactivation to restore infectivity to sunlight-damaged natural viral communities in offshore (chlorophyll a, < 0.1 microgram liter-1), coastal (chlorophyll a, ca. 0.2 microgram liter-1), and estuarine (chlorophyll a, ca. 1 to 5 micrograms liter-1) waters of the Gulf of Mexico. In 67% of samples, the light-dependent repair mechanisms of the bacterium Vibri...

2016
Kok-Gan Chan Nina Yusrina Muhamad Yunos

Here, we report the draft genome sequence of Chromobacterium piscinae strain ND17. This bacterium was isolated from a fresh water sample in Malaysia and exhibits quorum-sensing activity. This first draft genome of C. piscinae strain ND17 will pave the way to future studies of the quorum-sensing properties of this isolate.

2018
Periyasamy Sivagurunathan Gopalakrishnan Kumar Arivalagan Pugazhendhi Guangyin Zhen Takuro Kobayashi Kaiqin Xu

Biohydrogen production technology is an emerging field for the advanced wastewater treatment with cogeneration of energy. Besides, hydrogen is an excellent candidate with high energy value (122 kJ/g) than other known carbon‐based fuels with no adverse effects to the environment as it releases only water vapor as the by‐products during the combustion. Biohydrogen production technology can be ass...

Journal: :international journal of environmental research 0

limitation of water resources and necessity in profitable production, and consequentlyproductivity enhancement has taken crop production by means of unconventional water into consideration. inthis study, the effect of different levels of zeolite and nitrifying bacteria were investigated on nitrogenouscompounds absorption in a closed system of carp breeding with alfalfa. treatments of zeolites a...

Journal: :international journal of nanoscience and nanotechnology 2012
m. kolangikhah m. maghrebi k. ghazvini n. farhadian

in this study, salmonella typhimurium bacteria removal from polluted water has been investigated using multiwall carbon nanotubes arrays. experimental results reveal that the contact time, the bacterial concentration and the weight of multiwall carbon nanotubes arrays have positive significant effects on the bacteria removal efficiency. increasing the contact time and the weight of multiwall ca...

Journal: :jundishapur journal of health sciences 0
farshid kafilzadeh faranak abbasian department of biology, jahrom branch, islamic azad university, jahrom, ir iran elham kadivar department of biology, jahrom branch, islamic azad university, jahrom, ir iran

arsenic is one of the most dangerous heavy metals in the environment that is harmful for organisms such as human beings. due to this treat economic approach for elimination of arsenic from water and wastewater is necessary. in this research arsenic-resistant bacteria from water and sediments of lake maharloo were isolated and identified then their antibiotic resistance was evaluated. sampling w...

ابراهیمی, سیده معصومه, دهقانزاده ریحانی, رضا, شیری, زهره, معمار, محمد یوسف , موسوی, سیده مریم,

Background and purpose: Awareness of people about drinking water impurities and the demand for better water quality have led to widespread application of point-of-use (POU) water treatment devices. The aim of this study was to investigate the bacteriological quality of water produced by household water treatment devices. Materials and methods: This cross-sectional descriptive study was perfo...

Journal: :Applied microbiology 1973
T D Brock K L Boylen

Thermophilic bacteria resembling Thermus aquaticus were isolated from hot water taken from domestic and commercial hot-water tanks. Cold water from the same locations never yielded thermophilic bacteria, suggesting that the bacteria were growing in the tanks. In contrast to the T. aquaticus isolates from hot springs, the present isolates were rarely pigmented. In general, the hotter sources mor...

Journal: :Chemosphere 2012
A Nesterenko-Malkovskaya F Kirzhner Y Zimmels R Armon

The aim of the current study was to investigate the potential of an aquatic plant, the water hyacinth (Eichhornia crassipes) devoid rhizospheric bacteria, to reduce naphthalene (a polyaromatic hydrocarbon) present in wastewater and wetlands. The capability of sterile water hyacinth plants to remove naphthalene from water and wastewater was studied in batch systems. Water hyacinths enhance the r...

ژورنال: Medical Laboratory Journal 2015
Ghazanfari, Z, , Karvar, M, , Pouryazdanpanah, N, ,

Abstract Background and objective: Bioindicators of drinking water are always influenced by physical and chemical factors such as turbidity and chlorine.&nbsp; Considering the assessment of drinking water quality is based on residual chlorine, E.coli, heterotrophic bacteria and turbidity.&nbsp; We aimed to evaluate the effect of pH, chlorine residual and turbidity on the microbial ...

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