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Modelling of free radicals production in a collapsing gas-vapour bubble

, : Modelling of free radicals production in a collapsing gas-vapour bubble. Ultrasonics Sonochemistry 4(2): 77-84

This paper deals with a model linking bubble dynamics under an acoustic pressure field and production of free radicals in the resulting collapses of this bubble. The bubble dynamics model includes interdiffusion of gas and vapour in the bubble as well as evaporation or condensation at the interface, and it assumes uniformity of the internal pressure and perfect gas law for the gas vapour mixture. At the maximum compression of the bubble, all the reactions of dissociation which can occur are assumed at thermodynamic equilibrium. The local composition (especially in free radicals) in the bubble is then calculated by an algorithm based on free energy minimization using the information concerning the maximum compression provided by the bubble dynamics model resolution. Using this model a comparison of free radicals production has been made for two different driving frequencies (20 kHz and 500 kHz), and at given bubble radius and acoustic pressure, an optimum of liquid bulk temperature has been derived for the production of free radicals very similar to the experimental one concerning oxidation reactions in aqueous phase.


PMID: 11237048

Other references

Humphrey, S.R.; Cope, J.B., 1977: Population ecology of the little brown bat, Myotis lucifugus, in Indiana and north-central Kentucky. Special Pubis Am. Soc. Mammal., 4,1976: 1-81

Gofin, R.; Lewis, B.S.; Kark, J.D.; Witt, H.; Friedlander, Y.; Kimchi, A.; Gotsman, M.S., 1985: Treadmill exercise testing in a middle-aged Jerusalem population sample. The Jerusalem Lipid Research Clinic Prevalence Study. We studied determinants of the exercising physical capacity of 1,640 subjects (1,043 men and 597 women) using the Bruce protocol as modified by Sheffield. These participants represented a sample of parents of 17-year-old adolescents living in Jeru...

Kudenchuk, P.J.; Cobb, L.A.; Greene, H.L.; Fahrenbruch, C.E.; Sheehan, F.H., 1991: Late outcome of survivors of out-of-hospital cardiac arrest with left ventricular ejection fractions greater than or equal to 50% and without significant coronary arterial narrowing. In a retrospective survey of 1,195 survivors of out-of-hospital ventricular fibrillation, 43 patients were identified in whom left ventricular ejection fraction was greater than or equal to 0.50 and in whom no coronary artery stenosis of greater t...

Anonymous, 1848: Medical Legislation: Proposed Clauses of a New Bill. Provincial Medical & Surgical Journal 12(5): 133-134

Srivastava K.L.; Jangawad L.S., 1989: Water balance and erosion rates of vertisol watersheds under differential management. Mohan Raj, D R (Ed ) Small Watershed Hydrology; Workshop on The Role Of Small Watershed Hydrology in Rainfed Agriculture, November 22-24, 1988 Iv+40p International Crops Research Institute For The Semi-Arid Tropics: Patancheru, Andhra Pradesh, India Illus Paper 9

Fudulu, D.; Casali, G.; Sohail, M.; Krishnadas, R., 2016: Isolated metastasis of testicular seminoma to extralobar pulmonary sequestration. This case report describes a 46-year-old patient with a very unusual pattern of isolated metastasis to an extralobar pulmonary sequestration following orchidectomy for seminoma. The patient underwent uncomplicated video-assisted thoracoscopic rese...

Whitted, H.H.; Heshmat, M.Y.; Prater, L.B., 1971: Reaction to tuberculin, susceptibility to diphtheria and immunity against smallpox among medical students over a decade. Journal of the National Medical Association 63(4): 286-291

Aizawa, S., 2010: An interview with Shinichi Aizawa: President of the Japanese Society of Developmental Biologists. Interview by Eva Amsen. Development 137(22): 3729-3730

Pidpalyi, G.P.; Steshenko, I., 1962: Association of silicosis, tuberculosis and cancer of the lung. Kazanskii Meditsinskii Zhurnal 2: 63-64

Rausch, R., 1951: Studies of the helminthic fauna of Alaska. IV. Haploparaxis galli N. Sp., a cestode from the snow chicken, lagopus rupestris. Zeitschrift für Parasitenkunde 15(1): 1-3