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GAP TEST [5 records]

Record 1 2010-02-10

English

Subject field(s)
  • Engineering Tests and Reliability
  • Man-Made Construction Materials
  • Soil Mechanics (Engineering)
  • Synthetic Fabrics
CONT

Factors influencing the filtration performance of geotextile can be classified into four categories-external conditions(hydraulic gradient and loading state) ;(bio) chemical conditions of fluent(pH, hardness(e. g. [Fe], [Mn], [Mg], [Ca]), redox potential(Eh) for iron ochre, BOD and COD of water(substrate type/concentration), osmotic pressure and dissolved oxygen) ;the properties of basement material(coefficient of uniformity(Cu), coefficient of gradation(Cc), plastic index(PI), double hydrometer ratio(DHR) for dispersive clay, particle shape and grain hardness for granular soil, compaction degree of soil and saturation degree) ;and the properties of geotextile(filtration opening size(FOS), apparent opening size(AOS), fiber density, textile bulk density(mass/area), porosity, thickness and fiber material)... screen test results clearly indicated that the height of self filtration is proportional to the constriction size(Dc) of granular filter used. Additionally, they suggested the filter opening size value should be within the range between d50 and d80 for linearly graded soil and within the flat range in gap graded soil.

OBS

Symbol: Of

OBS

Compare with "apparent opening size (AOS)" and "filtration opening size (FOS)."

French

Domaine(s)
  • Fiabilité, contrôle et essais (Ingénierie)
  • Matériaux de construction artificiels
  • Mécanique des sols
  • Textiles artificiels et synthétiques
CONT

Pour les géotextiles utilisés comme filtres, on mesurera par commodité la probabilité de passage des particules de sol d'un diamètre connu. On assimile ainsi le géotextile à un tamis. On enregistre la taille maximale des particules traversant le tamis, mesure assimilée à un diamètre, d'où l'expression «diamètre de filtration». Plusieurs principes et méthodes sont actuellement utilisés pour définir cette caractéristique : tamisage à sec de billes de verre calibrées [...]; tamisage à sec de particules de sol [...]; tamisage de sol à l'humide [...]; tamisage de sol sous régime hydrodynamique.

CONT

Géotextiles. Détermination du diamètre d'ouverture de filtration. [Norme ONGC (Office des normes générales du Canada) 148.1, septembre 1994.]

OBS

L'ouverture Of de filtration du géotextile est conventionnellement exprimée par le d95 du sol.

OBS

On parle d'ouverture de filtration déterminée par tamisage à sec (en anglais : AOS; apparent opening size) et d'ouverture de filtration déterminée par tamisage hydrodynamique (en anglais : FOS; filtration opening size). L'expression «diamètre d'ouverture de filtration» est pléonastique. Renseignements obtenus d'un professeur de l'École polytechnique de Montréal, qui donne un cours intitulé «Mécanique des sols expérimentale».

Spanish

Save record 1

Record 2 2010-02-05

English

Subject field(s)
  • Genetics
CONT

TPP has received applications from CBS and HQ (Héma-Québec) to begin genomic amplification testing/nucleic acid testing (GAT)/NAT).

CONT

Nucleic acid testing, called NAT by blood banks, promises to close that gap. It could virtually eliminate the few cases of HIV that taint blood every year, said Dr. Celso Bianco of the New York Blood Center. And experts predict it will prevent an estimated 84 annual cases of hepatitis C transmission through blood, the vast majority. The government hasn’t mandated NAT-tested blood yet because technically it's still experimental. Genetic fingerprinting is commonplace in laboratories, where it's called PCR, for polymerase chain reaction testing. But how to test the entire blood supply raises questions, and blood banks are using different strategies to implement the new technology.

French

Domaine(s)
  • Génétique
OBS

Test sanguin utilisé pour détecter certains virus dans le sang de donneurs potentiels.

OBS

Équivalent fourni par un membre du personnel d'Héma-Québec.

Spanish

Save record 2

Record 3 2009-07-27

English

Subject field(s)
  • Diagnostic Procedures (Medicine)
  • Hearing
CONT

The gaps-in-noise test was then conducted on all subjects. The mean gap detection threshold was 4. 19 msec [milliseconds]. A psychometric function by gap duration was constructed, revealing that the percentage of correct responses was less than or equal to 5% for a gap duration of 2 msec, 10-30% for a gap duration of 3 msec, 60-70% for a gap duration of 4 msec, and over 96% for gap durations of 5 msec or longer.

French

Domaine(s)
  • Méthodes diagnostiques (Médecine)
  • Ouïe
OBS

test de détection du silence : terme proposé par un spécialiste en audiologie.

Spanish

Save record 3

Record 4 1996-02-12

English

Subject field(s)
  • Medical and Surgical Equipment
  • Visual Disorders
  • Psychometry and Psychotechnology
DEF

circles with gaps of varying degree used in the determination of visual acuity.

DEF

A test object for the measurement of visual acuity consisting of a circle subtending 5 minutes of arc with the thickness of the ring and the gap subtending a 1-minute angle.

OBS

A device for measuring visual acuity

French

Domaine(s)
  • Équipement médico-chirurgical
  • Troubles de la vision
  • Psychométrie et psychotechnique
DEF

Optotypes formés par des anneaux brisés. La tâche du sujet examiné est de déterminer l'orientation spatiale de la brisure de l'anneau. Ils peuvent être utilisés avec des lettres ou des illustrés.

OBS

Ils ont été proposés comme étalon international par le Congrès international d'Ophtalmologie en 1909.

Key term(s)
  • anneau de Landolt

Spanish

Save record 4

Record 5 1990-06-11

English

Subject field(s)
  • Symptoms (Medicine)
  • Musculoskeletal System
CONT

Schamroth test for clubbing : apposition of dorsal surfaces of contralateral digits demonstrates the proximity of the nail beds.... The normal digits... demonstrate a gap. In early clubbing... the gap is lost and the convexity of the nail is more obvious.

French

Domaine(s)
  • Symptômes (Médecine)
  • Appareil locomoteur (Médecine)

Spanish

Campo(s) temático(s)
  • Síntomas (Medicina)
  • Sistema musculoesquelético (Medicina)
Save record 5

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