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MICROSCOPIC TECHNIQUES [7 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2022-10-28

English

Subject field(s)
  • Industries - General
DEF

... a microscopic device with moving parts constructed on a substrate such as silicon, using lithography, etching, moulding, and other techniques.

Key term(s)
  • micro-machine

French

Domaine(s)
  • Industries - Généralités
Key term(s)
  • micro-machine

Spanish

Campo(s) temático(s)
  • Industrias - Generalidades
CONT

Las micromáquinas son objetos mecánicos que se fabrican en la misma forma que los circuitos integrados.

Save record 1

Record 2 2016-02-22

English

Subject field(s)
  • Electronic Systems
DEF

A class of microscopic devices machined using techniques borrowed from microchip production, including motors, gear systems, gyroscopes, and accelerometers that deploy car airbags.

French

Domaine(s)
  • Ensembles électroniques
DEF

Système intégrant sur une puce des dispositifs mécaniques et électroniques, qui remplit une fonction déterminée.

OBS

microsystème électromécanique; microsystème; mems : termes, abréviation et définition publiés au Journal officiel de la République française le 27 décembre 2009.

Spanish

Campo(s) temático(s)
  • Sistemas electrónicos
CONT

El nuevo dispositivo, un sistema microelectromecánico (o MEMS por sus sigla en inglés), permite a los biólogos manejar físicamente a las células para que se toquen, o para que estén cerca pero sin tocarse, o bien para que estén completamente separadas unas de otras [...]

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Record 3 2012-03-01

English

Subject field(s)
  • Classification of Coal
  • Characteristics of Coal
DEF

Coal that absorbs rather than reflects light, containing mostly durain and fusain lithotypes.

OBS

An early division was into three types : bright coal, dull coal and mineral charcoal(or mother of coal). Another system [divided coal into] four types : fusain, durain, clarain, and vitrain. This coincided with the classification put forward by... the United States Bureau of Mines where coal is divided into anthraxylon-bright layers of plant material and attrius-darker debris material. Today coal classification is based on the organic material seen using different optical microscopic techniques. There are three main groups : liptinite(or exinite), vitrinite and inertinite with many further divisions [within these three groups].

French

Domaine(s)
  • Classification des charbons
  • Caractéristiques des charbons
DEF

Charbon lité de couleur grise et d'aspect mat.

OBS

Ce peut être soit du durain, soit un charbon à forte teneur en matières minérales.

Spanish

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Record 4 2008-12-10

English

Subject field(s)
  • Diagnostic Procedures (Medicine)
  • Microbiology and Parasitology
  • Bacterial Diseases
DEF

A method for the differential staining of bacteria by treatment with a watery solution of iodine and the iodide of potassium after staining with a triphenylmethane dye (as crystal violet).

CONT

The Gram staining method... is one of the most important staining techniques in microbiology. It is almost always the first test performed for the identification of bacteria... The microorganisms that retain the crystal violet-iodine complex appear purple brown under microscopic examination [and] are commonly classified as gram positive... Others that are not stained by crystal violet are referred to as gram negative.

French

Domaine(s)
  • Méthodes diagnostiques (Médecine)
  • Microbiologie et parasitologie
  • Maladies bactériennes
DEF

Technique de coloration différentielle distinguant les bactéries Gram-positives et Gram-négatives sur la base de leur capacité à retenir le crystal violet lorsqu'elles sont décolorées à l'aide d'un solvant organique comme l'éthanol.

Spanish

Campo(s) temático(s)
  • Procedimientos diagnósticos (Medicina)
  • Microbiología y parasitología
  • Enfermedades bacterianas
DEF

Método de tinción diferencial de bacterias; los frotis se fijan a la llama, se tiñen con una solución de violeta cristal, se trata con solución de yodo, se lavan, se decoloran y luego se colorean por contraste con safranina O. Los microorganismos grampositivos se tiñen de negro violáceo y los gramnegativos de rosado; es útil en taxonomía e identificación bacteriana y también para indicar diferencias fundamentales en la estructura de la pared celular.

OBS

Yodo de Gram: solución que contiene yodo y yoduro de potasio, usada en el colorante de Gram.

OBS

Colorante de Gram: yodo, 1 g; yoduro potásico, 2 g; agua, 300 ml.

Save record 4

Record 5 2007-05-24

English

Subject field(s)
  • Magnetic Resonance Imaging
CONT

Perfusion MRI techniques... are sensitive to microscopic levels of blood flow. Contrast enhanced relative cerebral blood volume(rCBV) is the most used perfusion imaging.

Key term(s)
  • perfusion-weighted imaging
  • perfusion MRI
  • perfusion magnetic resonance imaging

French

Domaine(s)
  • Imagerie par résonance magnétique
CONT

L'imagerie de perfusion cérébrale permet d'accéder aux informations hémodynamiques concernant le volume sanguin régional cérébral. Ce type d'imagerie nécessite l'utilisation d'un produit de contraste (chélate de Gadolinium) présentant une forte susceptibilité magnétique et responsable d'une diminution des temps de relaxation des protons.

Spanish

Save record 5

Record 6 1987-03-03

English

Subject field(s)
  • Biochemistry
CONT

To help close the gap between the chemical and microscopic urine examinations, laboratory adoption of new techniques such as cytocentrifugation and sedimentation is advocated.

French

Domaine(s)
  • Biochimie
CONT

Bilan de l'utilisation des brossages bronchiques après cytocentrifugation dans le diagnostic des tumeurs bronchiques fibroscopies. (Base de données PASCAL).

Spanish

Save record 6

Record 7 1986-11-21

English

Subject field(s)
  • Mineralogy
CONT

The most advanced techniques of analytical microscopy were used to examine the microscopic structures of many materials. Information about the state of material obtained in this way was used in developing new materials and improving the properties of existing ones.

French

Domaine(s)
  • Minéralogie
CONT

Les techniques les plus perfectionnées de microscopie analytique disponibles ont été utilisées pour l'examen des structures microscopiques de nombreux matériaux. Les données sur l'état du matériau obtenu de cette façon ont été utilisées pour l'élaboration de nouveaux matériaux et pour l'amélioration des propriétés de matériaux existants.

Spanish

Save record 7

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