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11126001
11126001

... respiratory infection (ARI) is the leading cause of mortality and morbidity among <5 children in developing countries like Bangladesh. In this study we focused on elucidating the correlation between antibiotic resistance and plasmids in two multi-drug resistant bacterial respiratory isolates obtaine ...
fecal indicator bacteria at freshwater rainbow trout
fecal indicator bacteria at freshwater rainbow trout

... Soibe (1982). Causes for concern were the abstraction of a large part of the flow of the river, the large size of some farms, the location of series of several farms along one stretch of river, and the use of antibiotics and antibacterial agents without sufficient knowledge of their effects on wild ...
&#34;Ecophysiological and molecular characterization of estuarine microbial mats&#34;  Laura VILLANUEVA ÁLVAREZ
"Ecophysiological and molecular characterization of estuarine microbial mats" Laura VILLANUEVA ÁLVAREZ

... • Introduction and objectives of the study A microbial mat is a model of consortial association. The close spatial relationships between its members have facilitated the establishment of microscale biochemical gradients and ‘microniches’, which leads to a more complete nutrient recycling, the divers ...
Sample pages 1 PDF
Sample pages 1 PDF

... ammonium oxidizing bacteria (Magalhães et al. 2014). Such studies are normally attempted with the assumption that the primer set would identify the specific gene in all bacteria. But in the absence of a consensus sequence or known conserved sequence for a specific gene this approach could be biased ...
Psudomonas putida and fluorecences Prepared by: Ghada Rayyan D
Psudomonas putida and fluorecences Prepared by: Ghada Rayyan D

... They have been found in areas where a lot of pharmaceuticals are prepared. Any carbon source suchas soap. Antiseptics such as ammonium compounds and bottled mineral water. This ability to thrive in harsh conditions is aresult of their hearty cell wall that contains porins. ...
microbial indicators of fecal contamination: application to microbial
microbial indicators of fecal contamination: application to microbial

... lauryl-tryptose broth amended with 100 mg/L MUG, and observing the development of fluorescence within 24 hr incubation at 35°C. This assay can be adapted to membrane filters since β-glucuronidase-positive colonies are fluorescent or have a fluorescent halo when examined under a long-wave UV light. ...
Penicillin - WordPress.com
Penicillin - WordPress.com

... infections caused by staphylococci and streptococci. Penicillins are still widely used today, though many types of bacteria have developed resistance following extensive use. About 10% of people report that they are allergic to penicillin; however, up to 90% of this group may not actually be allergi ...
DEVELOPMENT AND CHARACTERIZATION OF SULFIDE-OXIDIZING BIOFILMS UNIVERSITAT AUTÒNOMA DE BARCELONA Facultat de Ciències
DEVELOPMENT AND CHARACTERIZATION OF SULFIDE-OXIDIZING BIOFILMS UNIVERSITAT AUTÒNOMA DE BARCELONA Facultat de Ciències

... non-aerated illuminated packed-column, which provides a large surface for microbial attachment. The reactor operates as a sulfidostat and the control system allows to maintain a constant concentration of residual sulfide in the micromolar range thus avoiding inhibition of sulfide oxidizers due to ex ...
Title of SMI goes here - Public Health England
Title of SMI goes here - Public Health England

... Principles of identification There are three basic methods of identification. The first relies heavily on the experience of the investigator: a judgement is made on the presumptive identity of the organism based on clinical data, cultural and atmospheric characteristics. A limited range of tests are ...
Shixue Yin (Prof Dr)
Shixue Yin (Prof Dr)

... drugs, amino acids, vitamins, etc Gas: formaldehyde, glutaraldehyde, ethylene oxide. Toxic chemicals (require gas chamber) used for large items Heat: important, widely used. Endospores (theromoduric) destruction guarantees sterility ...
In Vitro and In Vivo Antibacterial Activities of Omadacycline, a Novel
In Vitro and In Vivo Antibacterial Activities of Omadacycline, a Novel

... Omadacycline is distinct from older tetracyclines because it demonstrates in vitro activity against a relatively broad spectrum of organisms, including Gram-positive, Gram-negative, anaerobic, and atypical pathogens, and demonstrates similar in vitro activity against pathogens that express not only ...
Aspects of Bacterial Resistance to Silver
Aspects of Bacterial Resistance to Silver

... morbidity, mortality, and a burden to health care systems. The use of biocides, including silver compounds, may affect the resistance to both biocides and antibiotics and, thereby, can be a driving factor in this development. The aim of the following thesis was to investigate the frequency of silver ...
Glutamine(amide) : 2-Oxoglutarate Amino
Glutamine(amide) : 2-Oxoglutarate Amino

... utilizable nitrogen, micro-organisms must possess some mechanism for the synthesis of amino acids from NH, and intermediary metabolites. In many bacteria this requirement can be met solely by glutamate dehydrogenase (EC I . 4 . I .4), which reductively aminates a-oxoglutarate to glutamate. This enzy ...
The Wonderful World of Microbes
The Wonderful World of Microbes

... Does this view help? How do you think it works? ...
Biological diagnostics, control and treatment of the cholerae.
Biological diagnostics, control and treatment of the cholerae.

... Bacteria are, for the most part, unicellular organisms lacking chlorophyll. Their biological properties and predominant reproduction by binary fission relates them to prokaryotes. The size of bacteria is measured in micrometres (µm) and varies from 0.1 µm (Spiroplasma, Acholeplasma) to 16-18 µm (Spi ...
Thesis.  - ResearchSpace@UKZN
Thesis. - ResearchSpace@UKZN

... on the mode ofaction ofcompounds, e.g. whether they act on the cell wall or membrane or are inhibitors ofprotein or nucleic acid synthesis/functions, or interfere with the whole system ofcellular metabolism. However, several mechanisms of action may operate simultaneously, making such classification ...
Microbes and Health Kit: "What Causes Yogurtness?" - Bio-Rad
Microbes and Health Kit: "What Causes Yogurtness?" - Bio-Rad

... medium. However, handling of the E. coli K-12 strain requires the use of standard microbiological practices. These practices include, but are not limited to, the following: work surfaces are decontaminated once a day and after any spill of viable material; all contaminated liquid or solid wastes are ...
Antibiotic Resistance in Wastewater
Antibiotic Resistance in Wastewater

... Just a few years later more than 50 % of the Staphylococcus aureus isolates were resistant to penicillin (8). The trend has not been stopped, and today more than 95 % of S. aureus are resistant to penicillin (119). The fact is that there are almost daily reports of bacteria that have developed resis ...
Full-Text PDF
Full-Text PDF

... Shatalin et al. [9], is probably due to a deficient H2S production and hence a less protector effect. The role of H2S in protection to ROS producing agents has been previously suggested. For instance, S. Typhimurium ΔcysK mutant, which could accumulate H2S, is 3-fold more resistant to ciprofloxacin ...
MW3610 Orig artice
MW3610 Orig artice

... found in the presence of ciprofloxacin compared with ceftazidime cannot be explained by differences in the rate of bacterial killing since killing curves were nearly identical for ciprofloxacin and the -lactams. Rather, it may be assumed that the production and/or assembly of cell-bound LPS was inhi ...
Review: Gram Negative Bacteria in Brewing
Review: Gram Negative Bacteria in Brewing

... 2.1. Acetic Acid Bacteria Acetic Acid Bacteria (AAB) are industrially important as they can produce organic acid by oxidising sugar to ethanol then to organic acid, principally acetic acid. Gluconobacter are used for production of vinegar commercially. AAB bacteria are also used in various biotechno ...
Quenching of acyl-homoserine lactone
Quenching of acyl-homoserine lactone

... Abundant AHL-dependent QS systems require a variety of signal molecules. Although various bacterial species produce the same type of AHLs, these molecules are responsible for the regulation of different processes, e.g. 3-oxo-C6-HSL is involved in exoenzyme and carbapanem production by Pectobacterium ...
Changes in the composition and diversity of the bacterial microbiota
Changes in the composition and diversity of the bacterial microbiota

... the cultivation sites and growth stages that were examined, that is the postlarval, juvenile and adult stages (Trabal et al., 2012). The microbiota composition was determined by sequencing temperature-gradient gel electrophoresis bands, and the analysis revealed the presence of Betaproteobacteria, F ...
Antimicrobial resistance in biofilms
Antimicrobial resistance in biofilms

... 2. What are the stages of biofilm development? The first step is the adhesion of pioneer bacteria, with some of the planktonic or free-floating bacteria approaching the surface (live or alive) and becoming attached to the “boundary layer”, the quiescent zone at the surface where the flow velocity fa ...
B ) Revised syllabus with effect from 2007-08
B ) Revised syllabus with effect from 2007-08

... compensate his / her attendance shortage in a manner to be decided by the Head of the Department concerned after rejoining the Course. 5. Restriction to take the Examinations a) Any candidate having arrear paper(s) shall have the option to take the Examinations in any arrear paper(s) along with the ...
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Disinfectant



Disinfectants are antimicrobial agents that are applied to non-living objects to destroy microorganisms that are living on the objects. Disinfection does not necessarily kill all microorganisms, especially resistant bacterial spores; it is less effective than sterilization, which is an extreme physical and/or chemical process that kills all types of life. Disinfectants are different from other antimicrobial agents such as antibiotics, which destroy microorganisms within the body, and antiseptics, which destroy microorganisms on living tissue. Disinfectants are also different from biocides — the latter are intended to destroy all forms of life, not just microorganisms.Disinfectants work by destroying the cell wall of microbes or interfering with the metabolism.Sanitizers are substances that simultaneously clean and disinfect. Disinfectants are frequently used in hospitals, dental surgeries, kitchens, and bathrooms to kill infectious organisms.Bacterial endospores are most resistant to disinfectants, but some viruses and bacteria also possess some tolerance.In wastewater treatment, a disinfection step with chlorine, ultra-violet (UV) radiation or ozonation can be included as tertiary treatment to remove pathogens from wastewater, for example if it is to be reused to irrigate golf courses. An alternative term used in the sanitation sector for disinfection of waste streams, sewage sludge or fecal sludge is sanitisation or sanitization.
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