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FORCE ADSORPTION [7 records]
Record 1 - internal organization data 2012-01-17
Record 1, English
Record 1, Subject field(s)
- Analytical Chemistry
- Phraseology
Record 1, Main entry term, English
- secondary effect
1, record 1, English, secondary%20effect
proposal
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record 1, French
Record 1, Domaine(s)
- Chimie analytique
- Phraséologie
Record 1, Main entry term, French
- effet secondaire
1, record 1, French, effet%20secondaire
masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
Si la formule de Snyder régit de manière à peu près satisfaisante le phénomène d’adsorption dans les milieux peu polaires, elle devient inapplicable dans le cas des solvants de force éluante assez grande, ce qui est fréquent en CLS. Il faut lui adjoindre un terme correctif qui rassemble ce que l'on appelle les effets secondaires, effets qui sont très variés mais dont les plus importants sont liés à l'existence de composés d’association entre le soluté et le solvant [...] 1, record 1, French, - effet%20secondaire
Record number: 1, Textual support number: 1 OBS
On pourrait penser que ces effets secondaires sont gênants dans la mesure où ils compliquent les prévisions en chromatographie liquide-solide. En fait, ce n’est que grâce à eux que l’on peut, dans certains cas, parvenir à séparer des composés voisins. 1, record 1, French, - effet%20secondaire
Record number: 1, Textual support number: 1 PHR
Niveler les effets secondaires. 2, record 1, French, - effet%20secondaire
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2011-05-16
Record 2, English
Record 2, Subject field(s)
- Biological Sciences
- Biotechnology
Record 2, Main entry term, English
- desorption
1, record 2, English, desorption
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 DEF
Process of removing a sorbed substance by the reverse of adsorption or absorption. 2, record 2, English, - desorption
Record number: 2, Textual support number: 1 CONT
High ionic strength solutions of electrolytes do tend to cause the desorption of adsorbed proteins. The extent of this depends on the specific enzyme and support material involved, pH, temperature, and perhaps other variables ... [Thus,] an inherent snag in the use of physical adsorption for enzyme immobilization ... is the reversible nature of the bonding of enzyme to support ... One factor which often causes desorption is the addition of substrate to the enzyme preparation. This is a particular hazard, for although other factors which might cause desorption (such as fluctuation in pH, temperature, or ionic strength) can be controlled, no enzyme can work without its substrate. 3, record 2, English, - desorption
Record 2, French
Record 2, Domaine(s)
- Sciences biologiques
- Biotechnologie
Record 2, Main entry term, French
- désorption
1, record 2, French, d%C3%A9sorption
correct, feminine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record number: 2, Textual support number: 1 DEF
Phénomène inverse de l’absorption et de l’adsorption. 2, record 2, French, - d%C3%A9sorption
Record number: 2, Textual support number: 1 CONT
La grande facilité de préparation des complexes, l'emploi de méthodes douces préservant l'activité des enzymes, l'application à tous types de biocatalyseurs, rendent la technique d’immobilisation par adsorption très attrayante. Mais les forces d’interactions mises en jeu sont relativement faibles et conduisent souvent, au cours du temps, à une désorption progressive de la protéine qui est alors libérée dans le milieu réactionnel et entraînée avec l'effluent. La désorption de l'enzyme est souvent très rapide. Elle est provoquée par le flux du substrat, par une légère variation du pH ou une augmentation de la force ionique. 3, record 2, French, - d%C3%A9sorption
Record number: 2, Textual support number: 1 OBS
Voir «absorption» et «adsorption». 3, record 2, French, - d%C3%A9sorption
Record 2, Spanish
Record 2, Campo(s) temático(s)
- Ciencias biológicas
- Biotecnología
Record 2, Main entry term, Spanish
- desorción
1, record 2, Spanish, desorci%C3%B3n
correct, feminine noun
Record 2, Abbreviations, Spanish
Record 2, Synonyms, Spanish
Record 2, Textual support, Spanish
Record number: 2, Textual support number: 1 DEF
Fenómeno inverso de la absorción y de la adsorción. 2, record 2, Spanish, - desorci%C3%B3n
Record 3 - external organization data 2011-03-29
Record 3, English
Record 3, Subject field(s)
- Biological Sciences
- Atomic Physics
- Optics
- Compartment - Canadian Nuclear Safety Commission
Record 3, Main entry term, English
- electron microscopy
1, record 3, English, electron%20microscopy
correct
Record 3, Abbreviations, English
Record 3, Synonyms, English
- electronic microscopy 2, record 3, English, electronic%20microscopy
Record 3, Textual support, English
Record number: 3, Textual support number: 1 CONT
Until recently this minute world could be seen only by cumbersome, often destructive methods such as electron microscopy and X-ray diffraction. 3, record 3, English, - electron%20microscopy
Record number: 3, Textual support number: 2 CONT
Electron microscopy has been applied to sediments by many investigators ... 4, record 3, English, - electron%20microscopy
Record 3, French
Record 3, Domaine(s)
- Sciences biologiques
- Physique atomique
- Optique
- Tiroir - Commission canadienne de sûreté nucléaire
Record 3, Main entry term, French
- microscopie électronique
1, record 3, French, microscopie%20%C3%A9lectronique
correct, feminine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
Record 3, Textual support, French
Record number: 3, Textual support number: 1 CONT
[...] les microscopies à effet tunnel et à force atomique restent de très bons outils de caractérisation des dépôts, alors que la microscopie électronique est surtout utilisée pour caractériser sur la tranche les interfaces entre les couches. Les couches de très faible épaisseur peuvent jouer un rôle protecteur, comme c'est le cas non seulement en adsorption micro-onde, mais aussi en corrosion et en biocompatibilité, ou jouer le rôle de lubrifiant. Dans ce dernier cas, il s’agit, par exemple, d’optimiser les monocouches moléculaires qu'il faudrait déposer sur les disques ou bandes magnétiques pour éviter les rayures, puisque la distance entre la tête de lecture et ces supports va en diminuant. Ces couches jouent également un rôle actif en favorisant(ou en inhibant) le déroulement de réactions chimiques. 2, record 3, French, - microscopie%20%C3%A9lectronique
Record 3, Spanish
Record 3, Campo(s) temático(s)
- Ciencias biológicas
- Física atómica
- Óptica
- Compartimiento - Comisión Canadiense de Seguridad Nuclear
Record 3, Main entry term, Spanish
- microscopía electrónica
1, record 3, Spanish, microscop%C3%ADa%20electr%C3%B3nica
correct, feminine noun
Record 3, Abbreviations, Spanish
Record 3, Synonyms, Spanish
- microscopia electrónica 2, record 3, Spanish, microscopia%20electr%C3%B3nica
correct, feminine noun
Record 3, Textual support, Spanish
Record 4 - internal organization data 2001-12-13
Record 4, English
Record 4, Subject field(s)
- Fluid Mechanics and Hydraulics (Physics)
- Physics of Solids
Record 4, Main entry term, English
- adsorption force
1, record 4, English, adsorption%20force
correct
Record 4, Abbreviations, English
Record 4, Synonyms, English
Record 4, Textual support, English
Record 4, French
Record 4, Domaine(s)
- Mécanique des fluides et hydraulique (Physique)
- Physique des solides
Record 4, Main entry term, French
- force d'adsorption
1, record 4, French, force%20d%27adsorption
correct, feminine noun
Record 4, Abbreviations, French
Record 4, Synonyms, French
Record 4, Textual support, French
Record number: 4, Textual support number: 1 CONT
Les forces d’adsorption [...] s’établissent à la surface de séparation eau-solide; [...] 1, record 4, French, - force%20d%27adsorption
Record 4, Spanish
Record 4, Textual support, Spanish
Record 5 - internal organization data 1996-10-11
Record 5, English
Record 5, Subject field(s)
- Analytical Chemistry
Record 5, Main entry term, English
- dynamic adsorption 1, record 5, English, dynamic%20adsorption
Record 5, Abbreviations, English
Record 5, Synonyms, English
Record 5, Textual support, English
Record number: 5, Textual support number: 1 CONT
Dynamic adsorption. The most common mode of adsorptive separation process employs a fixed bed, cyclic operation. As the wet process stream enters the fresh molecular-sieve bed, the water vapor is adsorbed in a finite length of bed called a mass-transfer zone (MTZ), the bed length through which the concentration of the adsorbate is reduced from essentially inlet to outlet conditions. As wet gas continues to flow, the bed may be divided into three distinct zones; the dynamic equilibrium zone with inlet gas, the MTZ, and the remaining active zone. In most molecular-adsorption systems, the MTZ becomes stabilized because of its favorable isotherm and moves at a constant speed. The bed is exhausted when the leading edge of the MTZ reaches the outlet end of the bed. High effective capacity results from high dynamic equilibrium capacity and a short MTZ. 1, record 5, English, - dynamic%20adsorption
Record 5, French
Record 5, Domaine(s)
- Chimie analytique
Record 5, Main entry term, French
- adsorption dynamique
1, record 5, French, adsorption%20dynamique
feminine noun
Record 5, Abbreviations, French
Record 5, Synonyms, French
Record 5, Textual support, French
Record number: 5, Textual support number: 1 CONT
L'adsorption d’un mélange gazeux peut être menée de deux façons différentes : en régime statique ou en régime dynamique. [...] Dans l'adsorption dynamique, on force le mélange gazeux à traverser un lit d’adsorbant. 1, record 5, French, - adsorption%20dynamique
Record 5, Spanish
Record 5, Textual support, Spanish
Record 6 - internal organization data 1996-07-31
Record 6, English
Record 6, Subject field(s)
- Analytical Chemistry
Record 6, Main entry term, English
- Snyder formula
1, record 6, English, Snyder%20formula
proposal
Record 6, Abbreviations, English
Record 6, Synonyms, English
Record 6, Textual support, English
Record 6, French
Record 6, Domaine(s)
- Chimie analytique
Record 6, Main entry term, French
- formule de Snyder
1, record 6, French, formule%20de%20Snyder
feminine noun
Record 6, Abbreviations, French
Record 6, Synonyms, French
Record 6, Textual support, French
Record number: 6, Textual support number: 1 CONT
Si la formule de Snyder régit de manière à peu près satisfaisante le phénomène d’adsorption dans les milieux peu polaires, elle devient inapplicable dans le cas des solvants de force éluante assez grande, ce qui est fréquent en CLS. Il faut lui adjoindre un terme correctif qui rassemble ce que l'on appelle les effets secondaires, effets qui sont très variés mais dont les plus importants sont liés à l'existence de composés d’association entre le soluté et le solvant [...] 1, record 6, French, - formule%20de%20Snyder
Record 6, Spanish
Record 6, Textual support, Spanish
Record 7 - internal organization data 1989-12-13
Record 7, English
Record 7, Subject field(s)
- Biological Sciences
Record 7, Main entry term, English
- adsorbed enzyme
1, record 7, English, adsorbed%20enzyme
correct
Record 7, Abbreviations, English
Record 7, Synonyms, English
Record 7, Textual support, English
Record number: 7, Textual support number: 1 CONT
The physical adsorption method for the immobilization of enzyme is based on the physical adsorption of enzyme protein on the surface of water-insoluble carriers. This method often causes little or no conformational change of the enzyme protein, or destruction of its active center. Accordingly, if a suitable carrier for the target enzyme is found, this method may be both simple and effective. However, this method has the disadvantage that the adsorbed enzyme may leak from the carrier during utilization, because the binding force between the enzyme protein and carrier is weak. 1, record 7, English, - adsorbed%20enzyme
Record 7, French
Record 7, Domaine(s)
- Sciences biologiques
Record 7, Main entry term, French
- enzyme adsorbée
1, record 7, French, enzyme%20adsorb%C3%A9e
correct, masculine noun
Record 7, Abbreviations, French
Record 7, Synonyms, French
Record 7, Textual support, French
Record number: 7, Textual support number: 1 CONT
L'immobilisation par adsorption met en jeu un grand nombre de forces d’interactions de faible énergie entre le support solide et la protéine : interactions de Van der WAALS, liaisons hydrogène ou liaisons hydrophobes.(...) Différents paramètres vont influer sur la quantité d’enzyme fixée et sur la solidité des liaisons créées.-Concentration en protéine enzymatique(...)-Force ionique du milieu(...)-Température(...)-pH(...)-Taille des particules et nature du support : La masse d’enzyme adsorbée croît avec l'aire spécifique et donc avec la finesse des particules du support, mais en deçà d’une certaine taille, les risques de colmatage dans les réacteurs deviennent importants. 1, record 7, French, - enzyme%20adsorb%C3%A9e
Record 7, Spanish
Record 7, Textual support, Spanish
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