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POROUS SILICA [10 records]
Record 1 - internal organization data 2017-05-09
Record 1, English
Record 1, Subject field(s)
- Geology
Record 1, Main entry term, English
- gaize
1, record 1, English, gaize
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
A porous and fine-grained, micaceous and glauconitic sandstone containing much soluble silica... ;a clastic sediment... cemented by chert or flint. 2, record 1, English, - gaize
Record 1, French
Record 1, Domaine(s)
- Géologie
Record 1, Main entry term, French
- gaize
1, record 1, French, gaize
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
[Roche] constituée de débris d'organismes siliceux, d'argile, de glauconie dans un ciment d'opale et de calcédoine. À l'œil, c'est une roche grise, jaunâtre ou verdâtre, poreuse, très légère. Ce sont d'anciennes craies gréseuses et glauconieuses, partiellement silicifiées, puis décalcifiées. 2, record 1, French, - gaize
Record number: 1, Textual support number: 2 DEF
Roche siliceuse sédimentaire compacte, argileuse et dure, présente surtout dans l'est du bassin parisien (Aisne) [...] 3, record 1, French, - gaize
Record number: 1, Textual support number: 1 CONT
Les gaizes [...] se sont formées aux dépens d'éponges siliceuses unies par un ciment siliceux, argileux ou calcaire [...] 4, record 1, French, - gaize
Record number: 1, Textual support number: 1 OBS
[La gaize] entre dans la composition des ciments à la gaize. 3, record 1, French, - gaize
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2013-06-05
Record 2, English
Record 2, Subject field(s)
- Analytical Chemistry
Record 2, Main entry term, English
- slurry solvent
1, record 2, English, slurry%20solvent
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 CONT
The process for packing porous silica particles involves packing a slurry of particlesusing a slurry solvent at high pressure. The interaction between the slurry solvent and porous packing material is a very important element in producing well packedcolumns. If the particles do not suspend well in the slurry solvent, they can form aggregates. 1, record 2, English, - slurry%20solvent
Record 2, French
Record 2, Domaine(s)
- Chimie analytique
Record 2, Main entry term, French
- solvant servant à préparer la suspension
1, record 2, French, solvant%20servant%20%C3%A0%20pr%C3%A9parer%20la%20suspension
proposal, masculine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record 2, Spanish
Record 2, Textual support, Spanish
Record 3 - internal organization data 2010-06-01
Record 3, English
Record 3, Subject field(s)
- Biological Sciences
Record 3, Main entry term, English
- controlled pore glass
1, record 3, English, controlled%20pore%20glass
correct
Record 3, Abbreviations, English
- CPG 2, record 3, English, CPG
correct
Record 3, Synonyms, English
Record 3, Textual support, English
Record number: 3, Textual support number: 1 DEF
Controlled pore support prepared by heating borosilicate glass to 500-700 °C, when it undergoes a phase separation. Subsequent leaching of the borate component leaves a porous support with closely controlled pore sizes. However, it is not suitable for industrial purposes owing to its high price and lack of stability due to the continuous leaching of silica from the particles during prolonged usage in continuous flow systems, especially in alkaline media. Various methods have been employed to overcome the stability problem including the deposition of a surface coating of zirconium oxide by impregnating the controlled pore glass with a zirconium salt under vacuum followed by calcination to the oxide. 2, record 3, English, - controlled%20pore%20glass
Record number: 3, Textual support number: 1 CONT
Studies have been carried out on matrix stability and effects of coupling methodology on inorganic supports. Significant differences in controlled pore glass via azo-linkage and Schiff’s base linkage, Schiff’s base being the most stable. Similarly, many immobilized enzymes show increased stability to proteolysis. This increased stability has been used as the basis for a patented cleaning procedure in ... industrial immobilized [beta]-galactosidase columns for removing accumulated absorbed proteinous material from the column surface. 3, record 3, English, - controlled%20pore%20glass
Record number: 3, Textual support number: 1 OBS
CPG is an abbreviation of controlled pore glass. 2, record 3, English, - controlled%20pore%20glass
Record 3, French
Record 3, Domaine(s)
- Sciences biologiques
Record 3, Main entry term, French
- verre à porosité contrôlée
1, record 3, French, verre%20%C3%A0%20porosit%C3%A9%20contr%C3%B4l%C3%A9e
correct, masculine noun
Record 3, Abbreviations, French
- CPG 2, record 3, French, CPG
correct
Record 3, Synonyms, French
- verre poreux 2, record 3, French, verre%20poreux
correct, masculine noun
Record 3, Textual support, French
Record number: 3, Textual support number: 1 CONT
La chromatographie d'exclusion, utilisant soit des billes de verre à porosité contrôlée (dont la matrice est rigide), soit de la cellulose biodégradable, permet l'isolement de protéines comme les albumines du lait (sur résines échangeuses d'ions négatifs), ou les globulines (sur résines échangeuses d'ions positifs). 2, record 3, French, - verre%20%C3%A0%20porosit%C3%A9%20contr%C3%B4l%C3%A9e
Record number: 3, Textual support number: 1 OBS
CPG est une abréviation souvent citée dans les ouvrages français. 2, record 3, French, - verre%20%C3%A0%20porosit%C3%A9%20contr%C3%B4l%C3%A9e
Record 3, Spanish
Record 3, Textual support, Spanish
Record 4 - internal organization data 2008-05-15
Record 4, English
Record 4, Subject field(s)
- Petrography
- Chemical Engineering
Record 4, Main entry term, English
- flux-calcined diatomite
1, record 4, English, flux%2Dcalcined%20diatomite
correct
Record 4, Abbreviations, English
Record 4, Synonyms, English
- flux calcined diatomite 2, record 4, English, flux%20calcined%20diatomite
correct
Record 4, Textual support, English
Record number: 4, Textual support number: 1 CONT
Diatomite products that are further processed are called calcined and flux calcined diatomite. Most diatomite products are used in filtering applications. With a large particle size distribution, the smallest of the particles occupy space between larger particles. This reduces the rates of flow through the filter. The purpose of calcining is to reduce the particle size distribution. The use of the term calcined is ingrained in the diatomite industry and markets so it is used frequently, but diatomite is actually sinterized not calcined. Sintering reduces the size distribution by melting the smallest particles together. To produce calcined diatomite the natural product is heated to between 900°C and 1100°C. The high temperatures burn off organic contaminants, and shrink and harden the individual particles. Some of the diatom frustules are sintered into small clusters. The resulting calcined diatomite has a density of about 125 to 150 kg per cubic meter. Flux calcined diatomite is produced using the same methods except a fluxing agent is added before heating. 3, record 4, English, - flux%2Dcalcined%20diatomite
Record number: 4, Textual support number: 2 CONT
Diatomaceous earth is an amorphous form of silica containing a small amount of microcrystalline material. Filter aids are processed at above 800°C (1500°F). Both calcined and flux-calcined diatomite filter aids are free of organic matter and are non-adsorptive. 1, record 4, English, - flux%2Dcalcined%20diatomite
Record number: 4, Textual support number: 3 CONT
A highly purified flux calcined diatomite product having an intricate and porous diatomaceous silica structure, said product having a silica specific volume greater than 3. 3 4, record 4, English, - flux%2Dcalcined%20diatomite
Record 4, French
Record 4, Domaine(s)
- Pétrographie
- Génie chimique
Record 4, Main entry term, French
- diatomite calcinée à l'aide de fondants
1, record 4, French, diatomite%20calcin%C3%A9e%20%C3%A0%20l%27aide%20de%20fondants
correct, feminine noun
Record 4, Abbreviations, French
Record 4, Synonyms, French
- diatomite calcinée en présence d'un fondant 2, record 4, French, diatomite%20calcin%C3%A9e%20en%20pr%C3%A9sence%20d%27un%20fondant
feminine noun
- diatomite calcinée au fondant 3, record 4, French, diatomite%20calcin%C3%A9e%20au%20fondant
feminine noun
Record 4, Textual support, French
Record number: 4, Textual support number: 1 CONT
La terre de diatomée, nommée également diatomite, est une silice amorphe qui peut contenir à l'état naturel entre 0,1 et 4 % de silice cristalline, généralement du quartz. Certains procédés industriels comme la calcination à haute température de la terre de diatomée, avec ou sans l'utilisation concomitante de fondants, transforment la silice d'une forme amorphe en une forme cristalline et plus précisément en cristobalite. La terre de diatomée calcinée sans l'aide de fondants peut ainsi contenir de 20 à 30 % de cristobalite, alors que la diatomite calcinée à l'aide de fondants peut être contaminée jusqu'à 60 %. 1, record 4, French, - diatomite%20calcin%C3%A9e%20%C3%A0%20l%27aide%20de%20fondants
Record 4, Spanish
Record 4, Textual support, Spanish
Record 5 - internal organization data 2005-07-05
Record 5, English
Record 5, Subject field(s)
- Petrography
Record 5, Main entry term, English
- siliceous sinter
1, record 5, English, siliceous%20sinter
correct
Record 5, Abbreviations, English
Record 5, Synonyms, English
- stillolite 2, record 5, English, stillolite
correct
- sinter 3, record 5, English, sinter
correct, see observation
- pearl sinter 4, record 5, English, pearl%20sinter
correct
- geyserite 5, record 5, English, geyserite
correct
- fiorite 4, record 5, English, fiorite
correct
Record 5, Textual support, English
Record number: 5, Textual support number: 1 DEF
The lightweight porous opaline variety of silica, white or nearly white, deposited as an incrustation by precipitation from the waters of geysers and hot springs. 4, record 5, English, - siliceous%20sinter
Record number: 5, Textual support number: 1 OBS
The term [sinter] is indefinite and should be modified by the proper compositional adjective, although when used alone it usually signifies "siliceous" sinter. 4, record 5, English, - siliceous%20sinter
Record 5, French
Record 5, Domaine(s)
- Pétrographie
Record 5, Main entry term, French
- stillolite
1, record 5, French, stillolite
correct, feminine noun
Record 5, Abbreviations, French
Record 5, Synonyms, French
- geysérite 2, record 5, French, geys%C3%A9rite
correct, feminine noun
Record 5, Textual support, French
Record number: 5, Textual support number: 1 DEF
Roche déposée autour de l'évent d'un geyser, souvent peu cohérente et stalactiforme, composée surtout de silice hydratée (opale) et d'un peu d'alumine. 3, record 5, French, - stillolite
Record 5, Spanish
Record 5, Campo(s) temático(s)
- Petrografía
Record 5, Main entry term, Spanish
- geiserita
1, record 5, Spanish, geiserita
correct, feminine noun
Record 5, Abbreviations, Spanish
Record 5, Synonyms, Spanish
- geyserita 1, record 5, Spanish, geyserita
correct, feminine noun
Record 5, Textual support, Spanish
Record number: 5, Textual support number: 1 DEF
Concreción silícea de color blanco grisáceo, porosa y mamelonada, en forma de eflorescencias que se parecen a las de la coliflor; se produce al pie de los géiseres con los minerales precipitados por sus aguas termales. 1, record 5, Spanish, - geiserita
Record 6 - internal organization data 2003-06-10
Record 6, English
Record 6, Subject field(s)
- Chemical Engineering
Record 6, Main entry term, English
- catalyst carrier
1, record 6, English, catalyst%20carrier
correct
Record 6, Abbreviations, English
Record 6, Synonyms, English
- catalyst support 2, record 6, English, catalyst%20support
Record 6, Textual support, English
Record number: 6, Textual support number: 1 DEF
A neutral material used to support a catalyst, such as activated carbon, diatomaceous earth, or activated alumina. 3, record 6, English, - catalyst%20carrier
Record number: 6, Textual support number: 1 OBS
Traditionally, catalysts are prepared in such a way as to produce large surface areas. They are therefore usually either finely divided or porous or both. For the maintenance of a large surface area of the catalytic component, use if frequently made of substances which in themselves are inert, but which are capable of supporting the active catalyst in a form that resists sintering. Common supports are alumina, kieselguhr, silica gel, and even silica-alumina catalysts. 4, record 6, English, - catalyst%20carrier
Record 6, Key term(s)
- support
- carrier
Record 6, French
Record 6, Domaine(s)
- Génie chimique
Record 6, Main entry term, French
- support catalytique
1, record 6, French, support%20catalytique
correct, masculine noun
Record 6, Abbreviations, French
Record 6, Synonyms, French
- support de catalyseur 2, record 6, French, support%20de%20catalyseur
correct, masculine noun
- support 3, record 6, French, support
correct, masculine noun
- porteur 4, record 6, French, porteur
masculine noun
Record 6, Textual support, French
Record number: 6, Textual support number: 1 CONT
Les supports des catalyseurs doivent répondre à des exigences physiques d'une part (texture, résistance mécanique) et chimiques d'autre part, notamment s'ils doivent être portés à haute température en présence d'air ou de vapeur d'eau lors de la régénération. Les supports les plus employés sont l'alumine, la silice, le charbon actif, les silico-aluminates, les oxydes céramiques. 5, record 6, French, - support%20catalytique
Record number: 6, Textual support number: 2 CONT
On distingue en fonction des effets produits les porteurs (ou supports) et les promoteurs (activateurs). On appelle porteurs les substances qui servent de support aux catalyseurs proprement dits, leur permettant d'être finement divisés et leur conférant des propriétés mécaniques satisfaisantes : carbone, amiante, kaolin, kieselguhr (terre d'infusoires), grains métalliques, etc. 4, record 6, French, - support%20catalytique
Record 6, Spanish
Record 6, Campo(s) temático(s)
- Ingenieria química
Record 6, Main entry term, Spanish
- agente catalítico
1, record 6, Spanish, agente%20catal%C3%ADtico
masculine noun
Record 6, Abbreviations, Spanish
Record 6, Synonyms, Spanish
Record 6, Textual support, Spanish
Record 7 - internal organization data 1999-09-07
Record 7, English
Record 7, Subject field(s)
- Analytical Chemistry
Record 7, Main entry term, English
- porous silica
1, record 7, English, porous%20silica
correct
Record 7, Abbreviations, English
Record 7, Synonyms, English
Record 7, Textual support, English
Record number: 7, Textual support number: 1 CONT
Comparison of column performance of conventional porous silica reversed-phase stationary phases and a novel non-porous monodisperse 1. 5-] microns bonded silica in the separation of drugs. 2, record 7, English, - porous%20silica
Record 7, French
Record 7, Domaine(s)
- Chimie analytique
Record 7, Main entry term, French
- silice poreuse
1, record 7, French, silice%20poreuse
feminine noun
Record 7, Abbreviations, French
Record 7, Synonyms, French
Record 7, Textual support, French
Record number: 7, Textual support number: 1 OBS
De très nombreuses séparations autrefois décrites sur silice poreuse par adsorption ont été adaptées à la chromatographie sur silices greffées alkyles. 1, record 7, French, - silice%20poreuse
Record 7, Spanish
Record 7, Textual support, Spanish
Record 8 - internal organization data 1983-08-26
Record 8, English
Record 8, Subject field(s)
- Equipment and Tools (Water Supply)
- Water Treatment (Water Supply)
- Wastewater Treatment
Record 8, Main entry term, English
- feeder
1, record 8, English, feeder
correct
Record 8, Abbreviations, English
Record 8, Synonyms, English
Record 8, Textual support, English
Record number: 8, Textual support number: 1 CONT
The dome consists of an inverted saucer of porous material bolted to a base. The material consists of alumina crystals bonded with silica at high temperature. Domes are mounted on submerged feeders set lengthwise in one or more rows, on either or both sides of the tank. 1, record 8, English, - feeder
Record 8, French
Record 8, Domaine(s)
- Équipement et outillage (Alimentation en eau)
- Traitement des eaux
- Traitement des eaux usées
Record 8, Main entry term, French
- face nourrice
1, record 8, French, face%20nourrice
correct, feminine noun
Record 8, Abbreviations, French
Record 8, Synonyms, French
Record 8, Textual support, French
Record number: 8, Textual support number: 1 CONT
[Quelques diffuseurs d'air.] Le dôme est constitué d'une assiette renversée en matériau poreux fixée sur une embase à l'aide d'un boulon de serrage. Le matériau est composé de cristaux d'alumine liés à haute température par de la silice. Les dômes sont montés sur faces nourrices immergées et disposées longitudinalement en une ou plusieurs files, soit d'un seul côté du bassin, soit des deux [...] 1, record 8, French, - face%20nourrice
Record 8, Spanish
Record 8, Textual support, Spanish
Record 9 - internal organization data 1981-01-26
Record 9, English
Record 9, Subject field(s)
- Water Treatment (Water Supply)
Record 9, Main entry term, English
- hot-process carbonate removal
1, record 9, English, hot%2Dprocess%20carbonate%20removal
correct
Record 9, Abbreviations, English
Record 9, Synonyms, English
Record 9, Textual support, English
Record number: 9, Textual support number: 1 CONT
Hot-process carbonate and silica removal. If water is treated at a temperature of around 100 ° C with a mixture of lime and porous anhydrous magnesia powder, the silica can be fixed by adsorption until the residual content in the treated water is as low as 1 mg/litre. 1, record 9, English, - hot%2Dprocess%20carbonate%20removal
Record 9, French
Record 9, Domaine(s)
- Traitement des eaux
Record 9, Main entry term, French
- décarbonatation à chaud
1, record 9, French, d%C3%A9carbonatation%20%C3%A0%20chaud
correct, feminine noun
Record 9, Abbreviations, French
Record 9, Synonyms, French
Record 9, Textual support, French
Record number: 9, Textual support number: 1 CONT
Décarbonatation et désiliciage à chaud. Si on traite l'eau à une température voisine de 100 ° C avec un mélange de chaux et de poudre de magnésie anhydre poreuse, on peut fixer la silice par adsorption jusqu'à une teneur résiduelle dans l'eau traitée pouvant descendre à 1 mg/l. 1, record 9, French, - d%C3%A9carbonatation%20%C3%A0%20chaud
Record 9, Spanish
Record 9, Textual support, Spanish
Record 10 - internal organization data 1981-01-26
Record 10, English
Record 10, Subject field(s)
- Water Treatment (Water Supply)
Record 10, Main entry term, English
- hot-process silica removal 1, record 10, English, hot%2Dprocess%20silica%20removal
Record 10, Abbreviations, English
Record 10, Synonyms, English
Record 10, Textual support, English
Record number: 10, Textual support number: 1 CONT
Hot-process carbonate and silica removal. If water is treated at a temperature of around 100 ° C with a mixture of lime and porous anhydrous magnesia powder, the silica can be fixed by adsorption until the residual content in the treated water is as low as 1 mg/litre. 1, record 10, English, - hot%2Dprocess%20silica%20removal
Record 10, French
Record 10, Domaine(s)
- Traitement des eaux
Record 10, Main entry term, French
- désiliciage à chaud
1, record 10, French, d%C3%A9siliciage%20%C3%A0%20chaud
correct, masculine noun
Record 10, Abbreviations, French
Record 10, Synonyms, French
Record 10, Textual support, French
Record number: 10, Textual support number: 1 CONT
Décarbonatation et désiliciage à chaud. Si on traite l'eau à une température voisine de 100 ° C avec un mélange de chaux et de poudre de magnésie anhydre poreuse, on peut fixer la silice par adsorption jusqu'à une teneur résiduelle dans l'eau traitée pouvant descendre à 1 mg/l. 1, record 10, French, - d%C3%A9siliciage%20%C3%A0%20chaud
Record 10, Spanish
Record 10, Textual support, Spanish
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