Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Powiadomienia systemowe

Sesja wygasła!
Sesja wygasła!

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: E.coli bacteria

Sortuj według:

Ogranicz wyniki do:

Rapid capture and exemplary detection of clinical pathogen using surface modified fluorescent silica coated iron oxide nanoparticles

Chitra K., Annadurai G.

Biocybernetics and Biomedical Engineering

2014

Vol. 34, no. 4

230--237

Rapid, sensitive and selective detection of pathogenic bacteria is very important for treat- ment of diseases like foodborne illness, sepsis and bioterrorism. The silica coated iron oxide nanoparticles (SIO) were synthesized using simple, cost-effective method and used for the rapid capture and detection of clinical pathogen. The surface modification of nanoparticles was carried out using 3-aminopropyltriethoxy silane. The scanning electron microscopy image results showed the slightly agglomerated spherical shaped nanoparticles. Transmis-sion electron microscope result showed the polydispersed particles in the size ranges from 5 to 12 nm. The EDAX results confirmed the coating of silica with iron oxide particles. The SAED pattern confirmed the crystalline nature of iron oxide nanoparticles and also indicated the presence of silica. The FTIR spectrum of the nanoparticles confirmed the functional groups of the iron oxide and surface modified fluorescent silica coated iron oxide nano-particles (SFSIO). This work provides a very effective method for controlling the growth, capture and detection of pathogenic bacteria.

May a cormorant colony be a source of coliform and chemical pollution in a lake?

Klimaszyk P.

Oceanological and Hydrobiological Studies

2012

Vol. 41, No. 1

67-73

Studies on the influence of a perennial cormorant colony on chemical and microbial pollution of a reservoir were conducted in Chrzypskie Lake. During the investigation carried out between 2009-2010 in the area of the colony, 155-175 breeding pairs were observed. High pollution of groundwater with biogenic elements and coliform bacteria (together with E. coli) was recorded within the boundaries of the colony. Pollutants migrated to the lake together with groundwater. Mean values of the analyzed forms of biogenic elements and bacteria formed a gradient from the highest values recorded near the colony to the lowest ones recorded in the central part of the lake.