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HOMOGENEOUS REACTION [9 records]
Record 1 - internal organization data 2011-09-20
Record 1, English
Record 1, Subject field(s)
- Calculating Procedures (Mathematics)
- Nuclear Physics
- Nuclear Fission Reactors
Record 1, Main entry term, English
- discontinuity factor
1, record 1, English, discontinuity%20factor
correct
Record 1, Abbreviations, English
- DF 2, record 1, English, DF
correct
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
The nodal equivalence theory … has been found to be very effective for estimating the high-order heterogeneous solution by solving the corresponding low-order homogenous equation with additional parameters introduced to preserve the reaction rates, average fluxes, and average leakages of higher-order solution. The additional parameters called discontinuity factors(DFs) allow the homogeneous flux to be discontinuous between two adjacent homogenized regions. 2, record 1, English, - discontinuity%20factor
Record 1, French
Record 1, Domaine(s)
- Procédés de calcul (Mathématiques)
- Physique nucléaire
- Réacteurs nucléaires de fission
Record 1, Main entry term, French
- facteur de discontinuité
1, record 1, French, %20facteur%20de%20discontinuit%C3%A9
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
Continuité du flux homogène : si on souhaite conserver le courant à l’interface de deux mailles adjacentes et la forme de l’opérateur de calcul des courants (Fick-gross), alors il est inévitable qu’il faille relâcher la contrainte de continuité du flux homogène. Le lien entre le flux homogène et le flux hétérogène est introduit sous la forme de facteurs de discontinuité. À la place de la condition de continuité des flux homogènes, on a donc la condition de continuité des flux hétérogènes. Ces facteurs dépendent de la méthode d’évaluation des courants et des sections efficaces; ils permettent de prendre en compte l’homogénéisation de la région et de compenser les approximations numériques de la méthode d’intégration. 1, record 1, French, - %20facteur%20de%20discontinuit%C3%A9
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2011-09-20
Record 2, English
Record 2, Subject field(s)
- Calculating Procedures (Mathematics)
- Nuclear Physics
- Nuclear Fission Reactors
Record 2, Main entry term, English
- nodal equivalence theory
1, record 2, English, nodal%20equivalence%20theory
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 CONT
The nodal equivalence theory … has been found to be very effective for estimating the high-order heterogeneous solution by solving the corresponding low-order homogenous equation with additional parameters introduced to preserve the reaction rates, average fluxes, and average leakages of higher-order solution. The additional parameters called discontinuity factors(DFs) allow the homogeneous flux to be discontinuous between two adjacent homogenized regions. 1, record 2, English, - nodal%20equivalence%20theory
Record 2, French
Record 2, Domaine(s)
- Procédés de calcul (Mathématiques)
- Physique nucléaire
- Réacteurs nucléaires de fission
Record 2, Main entry term, French
- principe de l’équivalence nodale
1, record 2, French, principe%20de%20l%26rsquo%3B%C3%A9quivalence%20nodale
correct, masculine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record number: 2, Textual support number: 1 CONT
Principe de l’équivalence nodale. Le problème de l’équivalence nodale a été formalisé comme suit : supposant connue une référence neutronique hétérogène (une solution de l’équation de Boltzmann) et supposant défini par ailleurs un maillage homogène, quel traitement faut-il faire subir à l’équation de la diffusion pour que la solution trouvée sur le modèle homogène soit cohérente avec la référence hétérogène? La notion de cohérence est ici fondamentale et reflète les grandeurs que l’on souhaite conserver en passant de la référence au modèle homogène. L’algorithme de résolution de l’équation de la diffusion est supposé se décomposer en deux étapes principales dont l’enchaînement est le suivant. Calcul des flux […] Réévaluation des couplages […] 1, record 2, French, - principe%20de%20l%26rsquo%3B%C3%A9quivalence%20nodale
Record 2, Spanish
Record 2, Textual support, Spanish
Record 3 - internal organization data 2003-12-10
Record 3, English
Record 3, Subject field(s)
- Combustion and Fuels (Fireplaces)
- Heat (Physics)
Record 3, Main entry term, English
- condensed-phase combustion
1, record 3, English, condensed%2Dphase%20combustion
correct
Record 3, Abbreviations, English
Record 3, Synonyms, English
- condensed phase combustion 2, record 3, English, condensed%20phase%20combustion
- gasless phase combustion 3, record 3, English, gasless%20phase%20combustion
- solid-solid phase combustion 3, record 3, English, solid%2Dsolid%20phase%20combustion
Record 3, Textual support, English
Record number: 3, Textual support number: 1 CONT
A certain class of ceramic and metallic materials can be manufactured by the self-propagating high-temperature synthesis method. Even though by now this process has included reaction systems of the solid-gas and solid-liquid types, the original work was directed towards the reactions investigated where not only the reactants but also the final products formed in the solid phase. These reactions are therefore generally referred to as gasless, solid-solid or condensed phase combustion reactions. 3, record 3, English, - condensed%2Dphase%20combustion
Record number: 3, Textual support number: 2 CONT
Condensed phase combustion is a complex phenomenon of theoretical and practical interest, in particular, as a method to synthesize materials. This combustion synthesis process involves a self-sustained combustion wave which propagates through initial reactants converting them into a desired product. In condensed phase combustion the initial reactants as well as final, and possibly intermediate products, remain in the condensed phase throughout the reaction. Though the combustion process occurs in a heterogeneous medium composed of reactive particles, typical models of condensed phase combustion treat the medium as homogeneous. 4, record 3, English, - condensed%2Dphase%20combustion
Record number: 3, Textual support number: 3 CONT
A deflagration analysis of porous energetic materials with two-phase flow and a multiphase sequential reaction mechanism. ... A theoretical analysis for the unconfined deflagration of a porous energetic material is developed for a two-step global reaction mechanism that consists of the condensed-phase combustion of the reactive material to produce gas-phase intermediates, followed by a gas-phase reaction that produces final gas-phase products. 1, record 3, English, - condensed%2Dphase%20combustion
Record number: 3, Textual support number: 1 OBS
Combustion is a chemical reaction, it gives off heat and is self-sustaining. It can occur in a condensed-phase (glowing), a gas-phase (flame) or both. Fire results when a combustible material (fuel) in the presence of an oxidizing agent (oxygen) is heated to a critical temperature (ignition temperature). 5, record 3, English, - condensed%2Dphase%20combustion
Record 3, French
Record 3, Domaine(s)
- Combustion et combustibles (Foyers)
- Chaleur (Physique)
Record 3, Main entry term, French
- combustion en phase condensée
1, record 3, French, combustion%20en%20phase%20condens%C3%A9e
correct, feminine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
Record 3, Textual support, French
Record number: 3, Textual support number: 1 CONT
Synthèse auto-propagée à haute température. La synthèse auto-propagée est un processus de combustion en phase condensée (en anglais «SHS» - «self-propagating high temperature synthesis») développé pour produire des céramiques et des matériaux refractaires. 1, record 3, French, - combustion%20en%20phase%20condens%C3%A9e
Record number: 3, Textual support number: 1 OBS
état condensé : État de la matière dans lequel les atomes du corps sont très proches les uns des autres. (Les états solide et liquide sont des états condensés). 2, record 3, French, - combustion%20en%20phase%20condens%C3%A9e
Record 3, Spanish
Record 3, Textual support, Spanish
Record 4 - internal organization data 2003-06-12
Record 4, English
Record 4, Subject field(s)
- Chemistry
- Biotechnology
Record 4, Main entry term, English
- homogeneous chemical reaction
1, record 4, English, homogeneous%20chemical%20reaction
correct
Record 4, Abbreviations, English
Record 4, Synonyms, English
- homogeneous reaction 2, record 4, English, homogeneous%20reaction
correct
Record 4, Textual support, English
Record number: 4, Textual support number: 1 CONT
A team ran a series of computer simulations of stratospheric chemistry using standard homogeneous reactions, and found very little impact of trace gases produced by human activities. But when they adjusted the model to take account of non-standard chemistry, it responded by indicating a 16 percent drop in ozone concentrations by the year 2060. 3, record 4, English, - homogeneous%20chemical%20reaction
Record 4, French
Record 4, Domaine(s)
- Chimie
- Biotechnologie
Record 4, Main entry term, French
- réaction chimique homogène
1, record 4, French, r%C3%A9action%20chimique%20homog%C3%A8ne
correct, feminine noun
Record 4, Abbreviations, French
Record 4, Synonyms, French
- réaction homogène 2, record 4, French, r%C3%A9action%20homog%C3%A8ne
correct, feminine noun
Record 4, Textual support, French
Record number: 4, Textual support number: 1 DEF
Réaction chimique qui a lieu dans un système à une seule phase. 1, record 4, French, - r%C3%A9action%20chimique%20homog%C3%A8ne
Record number: 4, Textual support number: 1 OBS
La chimie traditionnelle ne s'occupe presque exclusivement que des réactions chimiques homogènes (chimie homogène). 3, record 4, French, - r%C3%A9action%20chimique%20homog%C3%A8ne
Record 4, Spanish
Record 4, Campo(s) temático(s)
- Química
- Biotecnología
Record 4, Main entry term, Spanish
- reacción homogénea
1, record 4, Spanish, reacci%C3%B3n%20homog%C3%A9nea
correct, feminine noun
Record 4, Abbreviations, Spanish
Record 4, Synonyms, Spanish
Record 4, Textual support, Spanish
Record 5 - internal organization data 2000-03-30
Record 5, English
Record 5, Subject field(s)
- Morphology and General Physiology
Record 5, Main entry term, English
- fibrinoid degeneration
1, record 5, English, fibrinoid%20degeneration
correct
Record 5, Abbreviations, English
Record 5, Synonyms, English
Record 5, Textual support, English
Record number: 5, Textual support number: 1 DEF
A form of degeneration in which the tissue involved is converted to a homogeneous or granular acellular mass with bright acidophilic staining reaction resembling that of fibrin. 1, record 5, English, - fibrinoid%20degeneration
Record number: 5, Textual support number: 1 OBS
Do not confuse with fibrinous degeneration in which there is deposit of fibrin, rather than fibrin-like material, within the cells of the tissue. (cf. DOMED 1981, p. 352). 2, record 5, English, - fibrinoid%20degeneration
Record 5, French
Record 5, Domaine(s)
- Morphologie et physiologie générale
Record 5, Main entry term, French
- dégénérescence fibrinoïde
1, record 5, French, d%C3%A9g%C3%A9n%C3%A9rescence%20fibrino%C3%AFde
correct, feminine noun
Record 5, Abbreviations, French
Record 5, Synonyms, French
Record 5, Textual support, French
Record number: 5, Textual support number: 1 CONT
Dans le foyer infectieux dermo-hypodermique, une réaction granulomateuse se constitue. Elle est faite de cellules épithélioïdes et de cellules géantes. Ensuite, survient une nécrose non caséeuse du tissu cutané, de type adiponécrose ischémique de l'hypoderme ou de type dégénérescence fibrinoïde du derme. Une fibrose secondaire peut s'observer. La coloration de Ziehl-Neelsen met en évidence des bacilles acido-alcoolo-resistants au sein de la nécrose. La coloration est souvent négative sur les lésions anciennes ou en phase de cicatrisation pauvres ou bacilles. 1, record 5, French, - d%C3%A9g%C3%A9n%C3%A9rescence%20fibrino%C3%AFde
Record 5, Spanish
Record 5, Textual support, Spanish
Record 6 - internal organization data 1997-09-26
Record 6, English
Record 6, Subject field(s)
- Chemistry
- Electrochemistry
Record 6, Main entry term, English
- bulk concentration
1, record 6, English, bulk%20concentration
correct
Record 6, Abbreviations, English
Record 6, Synonyms, English
Record 6, Textual support, English
Record number: 6, Textual support number: 1 CONT
In common practice the bulk concentration of B is taken to be the total or analytical concentration of B that would be present throughout the electrode or solution if there were no current flowing through the cell and if the electrode and solution did not interact in any way. In the absence of any homogeneous reaction or other process that produces or consumes B, the bulk concentration of B is the total or analytical concentration of B that is present before the excitation signal is applied. 1, record 6, English, - bulk%20concentration
Record number: 6, Textual support number: 1 OBS
[In electroanalysis], any technique that involves the establishment of a concentration gradient, either within the material from which an electrode is made or in the solution that is in contact with an electrode, the bulk concentration of a substance B is the total or analytical concentration of B at points so remote from the electrode-solution interface that the concentration gradient for B is indistinguishable from zero at the instant under consideration. 1, record 6, English, - bulk%20concentration
Record 6, French
Record 6, Domaine(s)
- Chimie
- Électrochimie
Record 6, Main entry term, French
- concentration dans la masse de la solution
1, record 6, French, concentration%20dans%20la%20masse%20de%20la%20solution
correct, feminine noun
Record 6, Abbreviations, French
Record 6, Synonyms, French
Record 6, Textual support, French
Record number: 6, Textual support number: 1 CONT
En pratique, on considère que la concentration de B dans la masse de la solution est égale à la concentration totale ou à la concentration analytique de B qui serait présente à l'électrode ou dans de la solution s'il ne passait pas de courant dans la cellule et s'il n'y avait aucune interaction entre l'électrode et la solution. En l'absence de réaction homogènes ou d'autres processus qui produisent ou qui consomment B, la concentration de B dans la masse de la solution est la concentration totale ou analytique de B présente avant la mise sous tension. 1, record 6, French, - concentration%20dans%20la%20masse%20de%20la%20solution
Record number: 6, Textual support number: 2 CONT
[En électroanalyse], toute technique qui implique qu'un gradient de concentration s'établit, soit dans le matériau dont l'électrode est faite ou dans la solution en contact avec l'électrode, la concentration d'une substance B dans la masse de la solution est égale à la concentration totale ou à la concentration analytique de B à des points tellement éloignés de l'interface électrode-solution que le gradient de concentration de B est pratiquement nul au moment de sa détermination. 1, record 6, French, - concentration%20dans%20la%20masse%20de%20la%20solution
Record 6, Spanish
Record 6, Textual support, Spanish
Record 7 - internal organization data 1997-09-26
Record 7, English
Record 7, Subject field(s)
- Electrochemistry
Record 7, Main entry term, English
- transport control
1, record 7, English, transport%20control
correct
Record 7, Abbreviations, English
Record 7, Synonyms, English
Record 7, Textual support, English
Record number: 7, Textual support number: 1 CONT
A term which refers to conditions where, in a controlled-potential experiment the electrode current, and in a controlled-current experiment the electrode potential, is solely determined by the rate of mass transport to (or away from) the electrode. For instance, the current measured in a controlled-potential experiment is then called a transport controlled current. 1, record 7, English, - transport%20control
Record number: 7, Textual support number: 1 OBS
Under conditions of transport control there is non influence of the kinetics of a reaction taking place at the electrode or in the volume of the solution, except in the case of the limiting current. This implies that the electrode reaction and homogeneous reactions, if present, are virtually at equilibrium(in spite of the current flow). 1, record 7, English, - transport%20control
Record 7, French
Record 7, Domaine(s)
- Électrochimie
Record 7, Main entry term, French
- contrôle par le transport
1, record 7, French, contr%C3%B4le%20par%20le%20transport
correct, masculine noun
Record 7, Abbreviations, French
Record 7, Synonyms, French
Record 7, Textual support, French
Record number: 7, Textual support number: 1 CONT
[...] Une expression qui se réfère à des conditions dans lesquelles le courant d'électrode d'une expérience à potentiel contrôlé (ou le potentiel d'une électrode dans une expérience à courant contrôlé) est déterminé uniquement par la vitesse du transport massique vers (ou de) l'électrode. Par exemple, le courant mesuré dans une expérience à potentiel contrôlé est nommé contrôle par le transport. 1, record 7, French, - contr%C3%B4le%20par%20le%20transport
Record number: 7, Textual support number: 1 OBS
Dans des conditions de contrôle par le transport, la cinétique d'une réaction qui se produit à une électrode ou le volume de la solution n'a aucune influence, excepté dans le cas du courant limite. Ceci implique que la réaction à l'électrode et les réactions homogènes, s'il en existe, sont virtuellement à l'état d'équilibre (malgré le passage du courant). 1, record 7, French, - contr%C3%B4le%20par%20le%20transport
Record 7, Spanish
Record 7, Textual support, Spanish
Record 8 - internal organization data 1997-04-09
Record 8, English
Record 8, Subject field(s)
- Electrochemistry
Record 8, Main entry term, English
- kinetic current
1, record 8, English, kinetic%20current
correct
Record 8, Abbreviations, English
Record 8, Synonyms, English
Record 8, Textual support, English
Record number: 8, Textual support number: 1 DEF
A faradaic current that corresponds to the reduction or oxidation of an electroactive substance formed by a prior chemical reaction from another substance that is not electroactive, and that is partially or entirely controlled by the rate of that reaction. The reaction may be heterogeneous, occurring at an electrode-solution interface(surface reaction), or it may be homogeneous, occurring at some distance from the interface(volume reaction). 1, record 8, English, - kinetic%20current
Record 8, French
Record 8, Domaine(s)
- Électrochimie
Record 8, Main entry term, French
- courant cinétique
1, record 8, French, courant%20cin%C3%A9tique
correct, masculine noun
Record 8, Abbreviations, French
Record 8, Synonyms, French
Record 8, Textual support, French
Record number: 8, Textual support number: 1 DEF
C'est un courant faradique qui correspond à la réduction ou à l'oxydation d'une substance électroactive, formée par une réaction chimique antérieure à partir d'une autre substance qui n'est pas électroactive; il est partiellement ou entièrement contrôlé par la vitesse de cette réaction. La réaction chimique peut être hétérogène, se produisant à une interface électrode-solution (réaction de surface) ou elle peut être homogène et se produire à une certaine distance de l'interface (réaction de volume). 1, record 8, French, - courant%20cin%C3%A9tique
Record 8, Spanish
Record 8, Textual support, Spanish
Record 9 - internal organization data 1997-02-18
Record 9, English
Record 9, Subject field(s)
- Chemistry
Record 9, Main entry term, English
- partial microscopic diffusion control
1, record 9, English, partial%20microscopic%20diffusion%20control
correct
Record 9, Abbreviations, English
Record 9, Synonyms, English
- partial microscopic diffusion encounter 1, record 9, English, partial%20microscopic%20diffusion%20encounter
correct
Record 9, Textual support, English
Record number: 9, Textual support number: 1 CONT
Partial microscopic diffusion(or encounter) control refers to a situation where the rates of chemical conversion and of encounter are comparable.... Partial microscopic diffusion control is said to operate in a homogeneous reaction when the rates of chemical conversion and of encounter are comparable.(The degree of microscopic diffusion control cannot usually be determined with any precision.) 1, record 9, English, - partial%20microscopic%20diffusion%20control
Record 9, French
Record 9, Domaine(s)
- Chimie
Record 9, Main entry term, French
- contrôle par diffusion microscopique partielle
1, record 9, French, contr%C3%B4le%20par%20diffusion%20microscopique%20partielle
correct, masculine noun
Record 9, Abbreviations, French
Record 9, Synonyms, French
- contrôle partiel par diffusion microscopique 1, record 9, French, contr%C3%B4le%20partiel%20par%20diffusion%20microscopique
correct, masculine noun
- contrôle par les rencontres 1, record 9, French, contr%C3%B4le%20par%20les%20rencontres
correct, masculine noun
Record 9, Textual support, French
Record number: 9, Textual support number: 1 CONT
Le contrôle par diffusion microscopique partielle (ou contrôle par les rencontres) se réfère à une situation dans laquelle les vitesses de conversion chimique et de rencontre sont comparables. [...] Il y a contrôle partiel par la diffusion microscopique pour une réaction en phase homogène, lorsque la vitesse de formation des produits à partir du complexe de rencontre et celle à laquelle les entités viennent en contact l'une de l'autre sont comparables (le degré de contrôle par la diffusion microscopique ne peut habituellement pas être déterminé avec précision). 1, record 9, French, - contr%C3%B4le%20par%20diffusion%20microscopique%20partielle
Record 9, Spanish
Record 9, Textual support, Spanish
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