Low energy ultrasound irradiation (20 kHz, 1.0 W·L) was applied to enhance bioethanol production from whey ultrafiltration permeate by co-immobilized Saccharomyces cerevisiae cells and β-galactosidese enzyme. Sugar utilization and ethanol formation were investigated as a function of hydraulic retention time (HRT) between 12 and 36 h. Maximum ethanol production under HRT of 36 h was 26.30 g·L wi...

One of innovate techniques that was used for improvement of water treatment process is application of ultrasound waves. In this study, different applications of ultrasound technology in water treatment process such as membrane filtration, turbidity and total suspended solid reduction, algae removal, disinfection process, water softening process and other pollutants removal such as halomethanes ...

OBJECTIVES Sonodynamic therapy is a physical treatment which utilizes ultrasound waves with an appropriate sensitizer such as protoporphyrin IX (PpIX). The activation of sensitizer depends on cavitation, and therefore, high intensity ultrasound is an important necessity. Beside, high intensity ultrasound can induce side effects on the healthy tissues which have surrounded tumor. The particles i...

We have demonstrated ultrasound-induced organogels based on twin-tapered dihydrazide derivatives, oxalyl acid N,N-di(3,4,5-trialkoxybenzoyl)hydrazide (FH-Tn). Ultrasound irradiation has been proved to influence gel properties at micro-levels. Different self-assembled structures from entangled fibers to tube-like structures and nanoparticles can be easily manipulated by tuning irradiation time a...

This study aimed to explore the effects of microbubble concentration, gene dosage, cell-microbubble mixing mode and fetal bovine serum (FBS) on gene delivery. 293T cells were transfected with Sonovue microbubbles carrying the hAng-1 gene via ultrasound irradiation. Various ultrasound exposure parameters and microbubble and DNA concentrations were investigated. In addition, FBS and the cell susp...

Human lymphocyte cultures were examined for chromosome damage after exposure to ultrasound. Control and treated slides were scored "blind" and showed no evidence of damage due to ultrasound. Neither was there evidence of chromosome damage in blood cultures from six infants whose mothers had ultrasound during pregnancy when compared with that from six infants whose mothers had not. Our results s...

The irradiation of liquids with high-intensity ultrasound causes chemical reactions to occur (1–6), often with the emis

All the authors declare that there is no potential conflict of interest referring to this article. Citation: Jatte FG, Mazzer N, Monte-Raso VV, Leoni ASL, Barbieri CH. Therapeutic ultrasound on the spinal cord accelerates regeneration of the sciatic nerve in rats. Acta Ortop Bras. [online]. 2011; 19(4):213-8. Available from URL: http://www.scielo.br/aob. ABSTRACT Objective: To study the effects...