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SIO2 [5 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2015-02-12

English

Subject field(s)
  • Mineralogy
DEF

Var. of chloropal... Silicate of Fe... rather higher in SiO2 and H2O than normal chloropal; doubtful, and may not be homogeneous, nor correctly assigned to chloropal.

French

Domaine(s)
  • Minéralogie
DEF

Variété de chloropal [...] Décrit par «Freisleben» en 1831.

Spanish

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Record 2 2012-02-07

English

Subject field(s)
  • The Lungs
  • Occupational Health and Safety
DEF

A chronic pulmonary disease due to inhalation of dust with a high concentration of silica(SiO2), characterized by widespread fibrosis and clinically by shortness of breath and increased susceptibility to tuberculosis.

OBS

Silicosis occurs among workers in many occupations, including quarrying and tunneling siliceous rock, stone cutting, and ceramics manufacture.

French

Domaine(s)
  • Poumons
  • Santé et sécurité au travail
DEF

Pneumoconiose professionnelle due à l'inhalation de poussières de silice.

OBS

Lentement progressive, la silicose aboutit à une sclérose pulmonaire extensive et entraîne une insuffisance respiratoire, puis une insuffisance cardiaque; elle peut être compliquée de tuberculose (silico-tuberculose).

Spanish

Campo(s) temático(s)
  • Pulmones
  • Salud y seguridad en el trabajo
DEF

Neumoconiosis producida por el polvo de sílice, por ejemplo a los albañiles y mineros.

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Record 3 2010-12-14

English

Subject field(s)
  • Trade Names
  • Types of Glass
  • Prostheses
  • Prosthetic Dentistry
DEF

A type of bioactive glass that bonds with living bone and tissue, and illicits a specific biological response at its interface, thus promoting bone regeneration.

OBS

Composition : 45% SiO2, 24. 5% CaO, 24. 5% NaO2, and 6% P2O5 by weight.

OBS

It is used as an implant material both in dentistry and in orthopedic surgery.

OBS

Bioglass 45S5: A trademark of Glaxo Smith Kline Consumer Health care Inc.

French

Domaine(s)
  • Appellations commerciales
  • Sortes de verre
  • Prothèses
  • Dentisterie prothétique
DEF

Type de verre bioactif qui interagit chimiquement avec les os vivants et les tissus, ce qui favorise la régénération osseuse.

OBS

Composition: 45 % de SiO2, 24,5 % de Na2O, 24,5 % de CaO et 6 % de P2O5 en poids.

OBS

Il est souvent utilisé dans les implants dentaires ou orthopédiques.

OBS

Bioglass 45S5 : Marque de commerce de la société Glaxo Smith Kline Consumer Health care Inc.

Spanish

Save record 3

Record 4 2001-04-26

English

Subject field(s)
  • Analytical Chemistry
  • Scientific Research Equipment
OBS

Thermal analysis. The differential-thermoanalytic investigations(Mettler Thermoanalyser TA 1) were executed with a quantity of 50 mg, a heating rate of 2°C/min in the flat platinum crucible(inert material 100 mg Sio2) with an air flow of 5 1/h in the temperature range of 25-300°C with a sensitivity of 0, 5 µV/SKT(DTA) or 0. 1 mg/SKT(TG).

French

Domaine(s)
  • Chimie analytique
  • Matériel et équipement (Recherche scientifique)

Spanish

Save record 4

Record 5 1981-01-26

English

Subject field(s)
  • Storage of Water
  • Water Treatment (Water Supply)
CONT

Industrially,... it is preferable to regulate the feed-rate of sodium silicate solution and acid solution by a continuous process. These two solutions are mixed in a tank provided with a water inlet to produce the required concentration of 1% of SiO2; the solution is then transferred to a maturing tank.

French

Domaine(s)
  • Stockage des eaux
  • Traitement des eaux
CONT

Industriellement, on préfère doser d'une manière continue la solution de silicate de sodium et la solution acide. On mélange ces deux solutions dans un bac comportant éventuellement, par ailleurs, une arrivée d'eau pour amener à la concentration désirable de 1 % (en SiO2), puis on fait passer la solution dans un bac de vieillissement correspondant à une demi-heure de séjour.

Spanish

Save record 5

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