Quantifying Bacteria Articles & Analysis
13 articles found
Environmental conditions in the medium were measured and bacteria detected and quantified by real-time polymerase chain reaction (real-time PCR). The pond showed daily cycles of mixing and stratification and most of the bacteria involved in nitrogen removal decreased in concentration from the upper to the lower part of the sludge layer. The ...
The aim of this study was to identify bacteria present in ripened manganese removal filters for drinking water production. The bacterial population was identified with ‘next generation’ DNA sequencing, and specific bacteria were quantified with quantitative polymerase chain reaction (qPCR) and characterized by matrix-assisted laser ...
There are a handful of very unique bacteria capable of oxidizing ammonia in anaerobic conditions. These bacteria simultaneously oxidize ammonia and reduce nitrite and are known as anammox bacteria. ...
Molecular microbiological techniques, such as quantitative polymerase chain reaction, offer a potential alternative for identifying and quantifying bacteria likely to be causing the production of hydrogen sulphide, information that, when combined with an appropriate sampling programme, can then be used to identify the potentially most effective remediation ...
The present study aimed to compare several methods for quantifying and discriminating between the different physiological states of a bacterial population present in drinking water. ...
Flow cytometry is a fast and user-friendly technique enabling bacteria quantification and viability assessment in less than 1 hour. Specific profiles regarding log-reduction of total bacteria were obtained for each treatment plant. ...
Quantification of filamentous bacteria in activated sludge systems can be made by manual counting under a microscope or by the application of various automated image analysis procedures. The latter has been significantly developed in the last two decades. In this work a new method based upon automated image analysis techniques was elaborated and presented. It consisted of three stages: (a) ...
The occurrence of antibiotic resistance genes (ARGs) and resistant bacteria was quantified in 17 water samples collected across Bosten Lake, Xinjiang, China. ...
The method is based on a highly sensitive fluorescence technology which is used to detect and quantify an enzyme activity in bacteria. The fluorescence produced is directly proportional to the content of bacteria in the water sample. ...
Reducing settling time offers selection pressure for aerobic granulation, and stepwise increase of influent N/C ratio can help to selectively enrich ammonia oxidizing bacteria (AOB) in aerobic granules. The spherical shaped granules were observed with the mean diameter of 1.25 mm, average settling velocity of 1.9 cm s−1 and the sludge volume index (SVI) of 18.5–31.4 ml g−1. ...
The objectives of this study were to quantify selected nutrients and bacteria, compare levels by farm types, and project impacts of production shifts. Nutrients and bacteria were characterized in 17 sow, 10 nursery, and 10 finisher farm lagoons. ...
An improved real-time PCR was developed to quantify Ammonia-Oxidising Bacteria (AOB) in aerobic granular sludge and activated sludge influenced by Pentachlorophenol (PCP), which ranged from 0 mg/L to 50 mg/L. ...
Very positive results were observed within weeks suggesting that the combination of direct injection and circulation accelerated the establishment of the biobarrier. Halorespiring bacteria have been quantified in the circulation area using Real-Time Polymerase Chain Reaction (PCR) techniques. ...