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MASS TRANSFER COEFFICIENT [3 records]
Record 1 - internal organization data 2003-04-11
Record 1, English
Record 1, Subject field(s)
- Biological Sciences
- Analytical Chemistry
- Biotechnology
Record 1, Main entry term, English
- mass transfer coefficient
1, record 1, English, mass%20transfer%20coefficient
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
Although several methods can be used to estimate the effects of mass transfer to the immobilized enzyme carrier surface from the bulk liquid, the conditions encountered are not typical of those frequently encountered in other applications. Laminar liquid flow with a low-Reynolds number falling outside the range of many mass transfer correlations is normal for immobilized enzyme systems. The rate of mass transfer from the bulk solution to a surface can be written as ... where km is the mass transfer coefficient (with units of cm/s), am is the surface area per unit volume (cm[superscript-1]), Sb is the bulk phase substrate concentration, and Ss is the substrate concentration at the surface. Under steady-state conditions, this mass transfer rate must equal the reaction rate at the particle surface or the apparent rate within the particle. 3, record 1, English, - mass%20transfer%20coefficient
Record number: 1, Textual support number: 1 OBS
Because of technical constraints, the formula(s) given in CBT-167 could not be reproduced. 4, record 1, English, - mass%20transfer%20coefficient
Record 1, French
Record 1, Domaine(s)
- Sciences biologiques
- Chimie analytique
- Biotechnologie
Record 1, Main entry term, French
- coefficient de transfert de masse
1, record 1, French, coefficient%20de%20transfert%20de%20masse
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
Théorie qui ramène le transfert d'oxygène à une diffusion continue entre la bulle et le liquide, à travers un film unique de faible épaisseur, en régime stationnaire. L'application de la loi de FICK à un tel mécanisme de transfert, considéré par ailleurs comme unidirectionnel conduit à la formule suivante : [...] dans laquelle KL représente le coefficient de transfert de masse (cm/h) et est égal au rapport du coefficient de diffusion de l'oxygène dans l'eau à l'épaisseur du film au travers duquel s'effectue le transfert. C[astérisque] correspond à la concentration en oxygène dissous en équilibre avec le gaz de la bulle. La même théorie s'applique à la diffusion du substrat entre une phase solide pour laquelle est fixée une enzyme immobilisée. 3, record 1, French, - coefficient%20de%20transfert%20de%20masse
Record number: 1, Textual support number: 1 OBS
En raison de contraintes d'ordre technique, les formules figurant dans la source CBT-167 ne peuvent être reproduites. 4, record 1, French, - coefficient%20de%20transfert%20de%20masse
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Ciencias biológicas
- Química analítica
- Biotecnología
Record 1, Main entry term, Spanish
- coeficiente de transferencia de masa
1, record 1, Spanish, coeficiente%20de%20transferencia%20de%20masa
correct, masculine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2002-03-21
Record 2, English
Record 2, Subject field(s)
- Environmental Studies and Analyses
- Air Pollution
Record 2, Main entry term, English
- mass transfer coefficient
1, record 2, English, mass%20transfer%20coefficient
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 CONT
Vapour Emission Rate Versus Spill Radius Nomograms. The evaporation rate for chemicals that form a liquid pool when spilled on a ground or water surface has been determined using the relationship of Stiver and Mackay ... Where Q = evaporation rate ... K = mass transfer coefficient, m/s - A = area, m2 - P = vapour pressure, Pa ... molecular weight ... gas constant ... temperature .... 2, record 2, English, - mass%20transfer%20coefficient
Record 2, French
Record 2, Domaine(s)
- Études et analyses environnementales
- Pollution de l'air
Record 2, Main entry term, French
- coefficient de transfert de matière
1, record 2, French, coefficient%20de%20transfert%20de%20mati%C3%A8re
correct, masculine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record number: 2, Textual support number: 1 OBS
Forme générale de l'équation de diffusion. En introduisant les coefficients macroscopiques de transfert et en négligeant les forces moléculaires, l'équation fondamentales de diffusion de la matière est : [...] où u est la concentration moyenne de matière au point M [...] 2, record 2, French, - coefficient%20de%20transfert%20de%20mati%C3%A8re
Record 2, Spanish
Record 2, Campo(s) temático(s)
- Estudios y análisis del medio ambiente
- Contaminación del aire
Record 2, Main entry term, Spanish
- coeficiente de transferencia de masas
1, record 2, Spanish, coeficiente%20de%20transferencia%20de%20masas
masculine noun
Record 2, Abbreviations, Spanish
Record 2, Synonyms, Spanish
Record 2, Textual support, Spanish
Record 3 - internal organization data 1997-01-15
Record 3, English
Record 3, Subject field(s)
- Electrochemistry
Record 3, Main entry term, English
- mass transfer coefficient
1, record 3, English, mass%20transfer%20coefficient
correct
Record 3, Abbreviations, English
Record 3, Synonyms, English
Record 3, Textual support, English
Record number: 3, Textual support number: 1 DEF
[In electrochemistry], the heterogeneous diffusion rate constant defined for the case of the limiting current. ... 1, record 3, English, - mass%20transfer%20coefficient
Record 3, French
Record 3, Domaine(s)
- Électrochimie
Record 3, Main entry term, French
- coefficient de transfert de masse
1, record 3, French, coefficient%20de%20transfert%20de%20masse
correct, masculine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
Record 3, Textual support, French
Record number: 3, Textual support number: 1 DEF
[En électrochimie], la constante de vitesse de diffusion hétérogène définie dans le cas du courant limite. [...] 1, record 3, French, - coefficient%20de%20transfert%20de%20masse
Record 3, Spanish
Record 3, Textual support, Spanish
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