TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

MICROBIAL ANALYSIS [6 records]

Record 1 2017-07-28

English

Subject field(s)
  • Biochemistry
  • Microbiology and Parasitology
  • Food Safety
CONT

Microbial analysis by traditional methods evaluates freshness, spoilage, and safety of meat and meat products...

French

Domaine(s)
  • Biochimie
  • Microbiologie et parasitologie
  • Salubrité alimentaire
CONT

Retenons que l'apparition d'altérations en surface ou la modification de l'odeur sont souvent la preuve d'une contamination par des microbes indésirables. Cependant, la réalisation d'analyses microbiennes dans un laboratoire reste indispensable, car la présence de certains microbes peut ne pas apparaître au premier coup d'œil.

Spanish

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Record 2 2015-12-11

English

Subject field(s)
  • Genetics
CONT

Two decades of culture-independent studies have confirmed that microbial communities represent the most complex and concentrated pool of phylogenetic diversity on the planet. There remains a need for innovative molecular tools that can further our knowledge of microbial diversity and its functional implications. We present the method and application of serial analysis of ribosomal sequence tags(SARST) as a novel tool for elucidating complex microbial communities, such as those found in soils and sediments. Serial analysis of ribosomal sequence tags uses a series of enzymatic reactions to amplify and ligate ribosomal sequence tags(RSTs) from bacterial small subunit rRNA gene(SSU rDNA) V1-regions into concatemers that are cloned and sequenced.

French

Domaine(s)
  • Génétique
CONT

Les techniques faisant partie du séquençage à haut débit comprennent l'analyse sériée d'étiquettes de séquences ribosomiques (SARST) et les plateformes de séquençage de la prochaine génération comme le pyroséquençage 454, l'Illumina et le séquençage par ligation (SOLiD). Ces méthodes génèrent des milliers de séquences, permettant une grosse couverture de la diversité bactérienne.

Spanish

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Record 3 2014-09-22

English

Subject field(s)
  • Bowels
CONT

The intestinal microbes are taxonomically complex and constitute an ecologically dynamic community(microbiota) that has long been believed to possess a strong impact on human physiology. Furthermore, they are heavily involved in the maturation and proliferation of human intestinal cells, helping to maintain their homeostasis and can be causative of various diseases, such as inflammatory bowel disease and obesity... Through metagenomic analysis, it is now possible to comprehensively explore the genetic nature of the intestinal microbiome, the mutually interacting system comprising the host cells and the residing microbial community.

French

Domaine(s)
  • Intestins
CONT

Le microbiome intestinal est impliqué dans l’homéostasie et le fonctionnement du système immunitaire local. Un équilibre entre le microbiome intestinal et les mécanismes de défense est retrouvé normalement dans l’intestin des individus sains.

Spanish

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Record 4 2011-05-16

English

Subject field(s)
  • Research Experiments in Space
CONT

Space microbiology studies may be divided into three major categories, each of which will be discussed in light of the current stage of knowledge in that field. The first involves analysis of samples collected outside the Earth's biosphere. The second includes the many studies in which pure cultures of terrestrial microorganisms were evaluated either during or after exposure to components of the spaceflight environment. The third category contains studies of the autoflora of crew members and the microbial load of recoverable spacecraft components which were performed to evaluate changes in populations of microorganisms.

French

Domaine(s)
  • Travaux de recherche dans l'espace

Spanish

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Record 5 2003-09-10

English

Subject field(s)
  • Environmental Studies and Analyses
CONT

SPI, or Sediment Profile Imagery, is an innovative and cost efficient method of surveying and/or monitoring lake or marine aquatic environments with a view to establishing the environmental status of these habitats or as part of a site suitability study.... SPI is based on single lens reflex(SLR) camera photography and computer-based image analysis which greatly accelerates the time required to write reports and provide relevant data to the client/legislator in a matter of weeks. SPI technology can readily quantify over 20 physical, chemical and biological parameters including : sediment grain size; prism penetration; surface pelletal layer; sediment surface relief; mud clasts; redox area; redox contrast; current apparent redox boundary; relict redox boundaries; methane gas vesicles; apparent faunal dominants; voids; burrows; surface features(e. g. worm tubes, epifauna, shell) ;dredged material; microbial aggregations; and successional stage.

French

Domaine(s)
  • Études et analyses environnementales
CONT

Des photographies de profils sédimentaires obtenus de carottes prélevées à l'aide de carottiers en plexiglass Hargrave ont servi à mettre au point un moyen nouveau pour déterminer l'enrichissement en matières organiques. Des plongeurs autonomes prélèvent des carottes de sédiments pouvant aller jusqu'à 30 cm de longueur; une fois ramenées à la surface, les carottes sont photographiées, sous-échantillonnées et interprétées. L'interprétation repose sur la profondeur de discontinuité de l'oxydo-réduction et la présence ou l'absence d'organismes, de terriers et de vides, tels que révélés par les photographies numériques. On obtient ainsi un nombre intégré attribuable à l'indice d'enrichissement organique. M. Wildish a prouvé la justesse de cette méthode, appelée imagerie de profils sédimentaires (IPS), aux sites salmonicoles de la baie de Fundy et on prévoit aussi la mettre à l'essai à des installations semblables en Tasmanie (Australie).

Spanish

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Record 6 2003-05-29

English

Subject field(s)
  • Optics
CONT

The application of confocal laser scanning microscopy(CLSM) has provided a powerful non-destructive method to biofilm research. CLSM application to biofilm work... enabled complex microbial communities to be visualised in-situ revealing their most intricate architecture and organisation without disruption caused by fixation. One major advantage of applying CLSM to biofilm study is its ability to obtain optical thin sections of fully hydrated biofilms. CLSM coupled with fluorescence methods and image analysis provides images with better resolution thus giving more information pertaining to biofilm composition.

French

Domaine(s)
  • Optique
OBS

Le microscope confocal à balayage laser (MCBL) est un microscope optique à éclairage épiscopique géré par un ordinateur qui est capable de sectionner optiquement un échantillon épais. Son image est ensuite reconstruite en superposant toutes ou certaines des sections optiques. [...] L'image résultante obtenue par balayage au niveau du plan focal a une épaisseur extrêmement limitée (section optique) et n'est pas perturbée par des images floues des plans situés au dessus ou au dessous.

OBS

L'image en microscopie confocale correspond à une section optique de l'objet, et l'épaisseur de cette section est d'environ 0,5 à 0,7 µm.

Spanish

Save record 6

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