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ultrasonic cavitation [1 record]
Record 1 - internal organization data 1996-06-06
Record 1, English
Record 1, Subject field(s)
- Radiation Protection
- Fluid Mechanics and Hydraulics (Physics)
- Audio Technology
Record 1, Main entry term, English
- ultrasonic cavitation
1, record 1, English, ultrasonic%20cavitation
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
In recent years studies of enzyme conformational changes have become highly sophisticated. By a variety of physical techniques they have revealed the great complexity of response of enzymes to small molecules.... One method uses ultrasonics to study the pH induced conformational transition in the active centers of the enzymes. The method utilizes the observation that ultrasonic cavitation produces hydroxyl and hydroperoxyl free radicals in water solution. Penetration of these radicals into the enzyme active center results in enzyme inactivation due to destruction of certain functional groups important for the catalytic activity, typically tryptophan residues.... Thus, a kinetic study of the enzyme ultrasonic inactivation allows us to determine the parameters associated with the conformational changes in the enzyme active center. 1, record 1, English, - ultrasonic%20cavitation
Record 1, French
Record 1, Domaine(s)
- Radioprotection
- Mécanique des fluides et hydraulique (Physique)
- Électroacoustique
Record 1, Main entry term, French
- cavitation aux ultrasons
1, record 1, French, cavitation%20aux%20ultrasons
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
Cavitation aux ultrasons. On crée un phénomène de cavitation (création de petites bulles à pression réduite) dans l'eau qui baigne la pièce à décontaminer, par des ultrasons. Ils produisent des variations de pression à fréquence élevée qui décollent les éléments contaminants déposés sur la surface à décontaminer. Cette méthode n'est utilisable qu'en atelier sur des pièces de volume limité et de géométrie favorable. 1, record 1, French, - cavitation%20aux%20ultrasons
Record number: 1, Textual support number: 1 OBS
«cavitation» : Formation de vide partiel dans un liquide dû à une séparation de constituants ou à un départ de gaz, notamment par action des ultrasons mais plus fréquemment au sein d'un liquide en mouvement, lorsque la pression dans le liquide devient inférieure à la tension de vapeur de celui-ci. 2, record 1, French, - cavitation%20aux%20ultrasons
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Protección contra la radiación
- Mecánica de fluidos e hidráulica (Física)
- Electroacústica
Record 1, Main entry term, Spanish
- cavitación ultrasónica
1, record 1, Spanish, cavitaci%C3%B3n%20ultras%C3%B3nica
correct, feminine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
Record 1, Textual support, Spanish
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