Sonication - Wikipedia
"Acoustic Cavitation Theory and Equipment Design Principles for Industrial Applications of High-Intensity Ultrasound", Book ... Substantial intensity of ultrasound and high ultrasonic vibration amplitudes are required for many processing applications, ... A.S. Peshkovsky, S.L. Peshkovsky "Industrial-scale processing of liquids by high-intensity acoustic cavitation - the underlying ... able to generate progressively larger high-intensity cavitation zones and, therefore, to process more material per unit of time ...https://en.wikipedia.org/wiki/Sonication
Bioruptor Sonication for Chromatin, DNA / RNA Shearing, Cell and Tissue Disruption | Diagenode
Bioruptor Sonication is ideal for Chromatin Shearing for Chromatin Immunoprecipitation (ChIP), Genomic DNA Shearing for next ... Bioruptor high intensity emission of ultrasounds creating cavitation is ideal for Epigenetics studies of chromatin and DNA ... High powered ultrasound waves can produce gaseous cavitation in liquids. Cavitation is the formation of small bubbles of ... The Bioruptor Pico and Plus utilize a sonication bath-based rotor. The walls of the sonication bath reflect the ultrasound ...https://www.diagenode.com/en/categories/bioruptor-shearing-device
Radical polymerization - Wikipedia
Sonication: The polymerization is initiated by high-intensity ultrasound. Polymerization to high molecular weight polymer is ... Initiation results from the effects of cavitation (the formation and collapse of cavities in the liquid). The collapse of the ... Sonication High-intensity ultrasound at frequencies beyond the range of human hearing (16 kHz) can be applied to a monomer. ... Depolymerization is favored at high temperatures: TΔSp is large. As the temperature increases, ΔGp become less negative. At a ...https://en.wikipedia.org/wiki/Radical_polymerization
Influence of Sonication on the Stability and Thermal Properties of Al2O3 Nanofluids
In contrast to the lower-intensity bath-type sonicators, higher intensity ultrasound probes are typically used to create ... Acoustic cavitation induced by sonication results in strong shear forces that can break up agglomerates . In general, ... The stability of the nanofluids is size dependent and it has been found that samples prepared under higher intensity sonication ... a higher concentration of NPs leads to a higher absorbance value. A higher NP concentration results in a more stable suspension ...https://www.hindawi.com/journals/jnm/2014/612417/
Ultrasonically Assisted Fermentation for Bioethanol Production
Hard applications with high intensity/ high power ultrasound (mostly under elevated pressure) are wet-milling, deagglomeration ... marxianus at a relatively high sonication intensity of 11.8Wcm−2. Under the best conditions, sonication enhanced the final ... Higher amplitudes result in a more effective creation of cavitation. In addition to the intensity, the liquid should be ... By high-power/ low-frequency ultrasound high amplitudes can be generated. Thereby, high-power/ low-frequency ultrasound can be ...https://www.hielscher.com/ultrasonically-assisted-fermentation-for-bioethanol-production.htm
BANDELIN BactoSonic - BANDELIN
Principle of sonication. High acoustic intensity of conventional ultrasound baths kills microorganisms (especially gram- ... uses low frequency and low intensity ultrasound at the threshold of microbubble formation (cavitation). Due micro-currents of ... High accuracy With low-intensity sonication, microorganisms are dislodged from the implant but not killed, enabling high ... The sonication fluid contains high density of bacteria, making it suitable for further microbial (e.g. PCR, MALDI-TOF, ...http://bandelin.com/produkte/bactosonic/?lang=en
Device, system, and method for controllably reducing inflammatory mediators in a subject - Patent application
... high intensity focused ultrasound produces cavitation bubbles that when collapsed yield very high localized pressures and high ... Sonication in the form of focused ultrasound energy may result in degradation of the one or more inflammatory mediators. In an ... In this study, high initial serum levels of IL-10 (mean of 45 pg/ml) and IL-6 (mean of 735 pg/ml) upon admission to the ... In one study, high levels of both IL-10 and IL-6 are associated with increased mortality with a hazard ratio of 20.52. ...http://www.patentsencyclopedia.com/app/20120109039
Temporary Disruption of the Blood-Brain Barrier by Use of Ultrasound and Microbubbles: Safety and Efficacy Evaluation in Rhesus...
Pulsed high-intensity focused ultrasound enhances the relative permeability of the blood-tumor barrier in a glioma-bearing rat ... Sonication with microbubbles will cause vascular damage when exposure levels exceed inertial cavitation threshold. It is ... High-intensity focused ultrasound for noninvasive functional neurosurgery. Ann Neurol 2009;66:858-61. ... have been developed that compensate for the human skull and can focus high-intensity ultrasound accurately and noninvasively ...http://cancerres.aacrjournals.org/content/72/14/3652
Sonochemistry - Wikipedia
Upon irradiation with high intensity sound or ultrasound, acoustic cavitation usually occurs. Cavitation - the formation, ... Ultrasound Sonication Ultrasonics ultrasonic homogenizer homogenizer Homogenization (chemistry) Sonoelectrochemistry Kenneth S ... Once cavitation occurs near an extended solid surface, cavity collapse is nonspherical and drives high-speed jets of liquid to ... pp.62-68 (p.62) Wood, R.W.; Loomis, A.L. The Physical and Biological Effects of High Frequency Sound Waves of Great Intensity. ...https://en.wikipedia.org/wiki/Sonochemistry
Field responsive materials: photo-, electro-, magnetic- and ultrasound-sensitive polymers - Polymer Chemistry (RSC Publishing)...
Heating is intensity and focus dependent. The non-thermal effects of ultrasounds, known as the cavitation effect, are defined ... Therefore, high-intensity focused ultrasound (HIFU, frequency range 0.8-3.5 MHz) is emerging as a very interesting external ... study of the effect of the molecular weight and the contour length of a polymer on its chain-scission during ultra-sonication. ... Ultrasound-responsive polymers. Ultrasound is the high-frequency waves created by mechanical oscillations of a piezoelectric ...http://pubs.rsc.org/en/content/articlehtml/2016/py/c6py01455k
Mechanoluminescence event yields novel emissions, reactions | EurekAlert! Science News
Sonication, the use of sound energy to agitate particles or other substances, causes high intensity collisions of crystal ... Sonication of liquids causes acoustic cavitation: the formation, growth and implosion of bubbles. This generates tremendous ... "The intense mechanoluminescence and chemical reactions produced by ultrasound give us a better understanding of ... The new study involved the sonication of a slurry of recorcinol (sugar) crystals in the liquid paraffin, dodecane. When ...https://www.eurekalert.org/pub_releases/2007-05/uoia-mey050807.php
Gareth Price, SFHEA - the University of Bath's research portal
... or the use of high intensity ultrasound. This exploits the effect of cavitation and produces radicals and excited state species ... Of particular interest to polymer chemists, sonication can cause polymer chain breakage and reduction of molecular weight in a ... Ultrasound Promoted Synthesis and Properties of Chitosan Nanocomposites Containing Carbon Nanotubes and Silver Nanoparticles. ... a joint project with medical physicists to determine the power thresholds and other safety considerations in medical ultrasound ...https://researchportal.bath.ac.uk/en/persons/gareth-price/
Low-pressure pulsed focused ultrasound with microbubbles promotes an anticancer immunological response | Journal of...
Here we demonstrated that another form of focused ultrasound delivery, using low-pressure, pulsed-mode exposure in the presence ... High-intensity focused-ultrasound (HIFU) has been successfully employed for thermal ablation of tumors in clinical settings. ... Tumor growth reduction and DNA transfer by cavitation-enhanced high-intensity focused ultrasound in vivo. Ultrasound Med Biol. ... Multiple sonications were carried out to completely cover the tumor. Animals typically underwent 9 to 12 sonications to allow ...https://translational-medicine.biomedcentral.com/articles/10.1186/1479-5876-10-221
High-intensity focused ultrasound - Wikipedia
At high enough acoustic intensities, cavitation (microbubbles forming and interacting with the ultrasound field) can occur. ... Higher temperatures are usually avoided to prevent boiling of liquids inside the tissue. Each sonication (individual ultrasound ... In particular High Intensity ultrasound and ultrasound visualization was accomplished stereotaxically with a Cincinnati ... This is known as Magnetic Resonance guided Focused Ultrasound (MRgFUS) or High Intensity Focused Ultrasound (HIFU). These ...https://en.wikipedia.org/wiki/High-intensity_focused_ultrasound
Efficiency of drug delivery enhanced by acoustic pressure during blood | IJN
Thus, it is possible to optimize ultrasound parameters for lower sonication and reduced UCA doses, to induce BBB-D while ... followed by sonication at reduced acoustic power or UCA dosage. The normalized signal intensity change in rat brains that ... at four different doses to induce BBB-D resulting from cavitation. The permeability of the BBB was assessed quantitatively ... Administration of EB followed by sonication resulted in greater EB extravasation than that for rats subjected to sonication ...https://www.dovepress.com/efficiency-of-drug-delivery-enhanced-by-acoustic-pressure-during-blood-peer-reviewed-article-IJN
Hydrodynamic cavitation: Work pertaining to: cavitation in hydraulic and high fluid velocity rotary and linear velocity systems ... Sonochemistry: Chemical and physical operating parameters influencing cavitation threshold, activity, intensity and associated ... Keywords: sonochemistry, ultrasonics, cavitation, sonication, sonoluminescence, sonoprocessing, food processing, ... cavitation detector optimised for subharmonic periodic shock waves from acoustic cavitation in MHz and sub-MHz ultrasound ...https://www.journals.elsevier.com/ultrasonics-sonochemistry
Power Ultrasonic equipment practice and application - Sonic Systems
This article is intended to give an introduction to the principles of the generation of ultrasound for the non-specialist. ... Chemists are turning ever more to ultrasound as a source of energy for the acceleration or modification of chemical reactivity ... Cavitation may occur when applying high intensity ultrasound to liquids. In generating cavitation a sinusoidal pressure is ... Cavitation effects, produced during the sonication of a liquid sample, results in the generation of a wide spectrum of noise. ...http://sonicsystems.co.uk/page/power-ultrasonics-a-guide/39/
Sonodynamic therapy (SDT): a novel strategy for cancer nanotheranostics | SpringerLink
Compared to photo-inspired therapy, SDT provides many opportunities and benefits, including deeper tissue penetration, high... ... The disruption of murine tumor neovasculature by low-intensity ultrasound-comparison between 1- and 3-MHz sonication ... Hyperthermia-triggered drug delivery from temperature-sensitive liposomes using MRI-guided high intensity focused ultrasound. J ... Wu, J., and Nyborg, W.L. (2008). Ultrasound, cavitation bubbles and their interaction with cells. Adv Drug Deliver Rev 60, 1103 ...https://link.springer.com/article/10.1007/s11427-017-9262-x
Al/Hg Reduction of Nitroalcohols Promoted by Ultrasound - [www.rhodium.ws]
Application of high-intensity ultrasound to other types of reactions characterized by heterogeneity are currently under study ... Sonication was continued with addition of water (2.5 mmol) at 10 min intervals until 15 mmol had been added. Total sonication ... As in the aluminum amalgam reduction such processes may involve the cavitation-induced generation of a microdispersion with ... An evaluation of temperature effects and acoustic intensity in the ultrasound-promoted aluminum amalgam reduction of α,β-epoxy ...https://www.erowid.org/archive/rhodium/chemistry/al-hg.ultrasound.html
Focused ultrasound-aided immunomodulation in glioblastoma multiforme: a therapeutic concept | Journal of Therapeutic Ultrasound...
Mounting evidence suggests that in addition to thermal ablation, FUS induces mechanical acoustic cavitation and ... Focused ultrasound (FUS) is emerging as a promising treatment approach. The effects of FUS on the tissue are not merely thermal ... Activated anti-tumor immunity in cancer patients after high intensity focused ultrasound ablation. Ultrasound Med Biol. 2004;30 ... Complete tumor ablation is then achieved by employing multiple stereotactic sonications [20, 23-25]. ...https://jtultrasound.biomedcentral.com/articles/10.1186/s40349-016-0046-y
MRI and histological evaluation of pulsed focused ultrasound and microbubbles treatment effects in the brain
An overview of the influence of therapeutic ultrasound exposures on the vasculature: high intensity ultrasound and microbubble- ... We did observe stable cavitation during sonication in all groups. The ultraharmonic frequency measurements did not detect ... Focused ultrasound-induced blood-brain barrier opening: Association with mechanical index and cavitation index analyzed by ... Image-guided low intensity pulsed focused ultrasound (pFUS) coupled with an infusion of ultrasound (US) contrast agent ...http://thno.org/v08p4837.htm
Focused ultrasound-modulated glomerular ultrafiltration assessed by functional changes in renal arteries.
... to modulate glomerular ultrafiltration by renal artery sonication and determine if protein-creatinine ratios are estimated ... This study demonstrates the feasibility of using focused ultrasound (FUS) ... Year: 2008) Pulsed high-intensity focused ultrasound enhances uptake of radiolabeled monoclonal antibody to human epidermoid ... The most harmful event that is induced by FUS sonication is inertial cavitation, which may result in hemorrhage and apoptosis. ...http://www.biomedsearch.com/nih/Focused-ultrasound-modulated-glomerular-ultrafiltration/23326567.html
Cell viability decreased exponentially with time at different intensities of ultrasound. Increasing intensity caused a decrease ... Ultrasonic inactivation of Escherichia coli XL1-Blue has been investigated by high-intensity ultrasonic waves from horn type ... More than 99% of E. coli cells was inactivated within 180-s sonication at the amplitude of 3 microm (p-p) and 2 mm of the ... that the ultrasonic shock wave might be more important than indirect effect of OH radicals formed by ultrasonic cavitation in ...http://www.ultrasonic-antifouling.com/scientific-studies/
Experimental study of applying shear wave elastography for examining effects of high intensity focused ultrasound ablation...
Experimental study of applying shear wave elastography for examining effects of high intensity focused ultrasound ablation ... Ultrasound. Introduction. High Intensity Focused Ultrasound (HIFU) ablates tumors by means of heat and cavitation. Previous ... Harmonic motion imaging for focused ultrasound (HMIFU): a fully integrated technique for sonication and monitoring of thermal ... Tumor growth reduction and DNA transfer by cavitation-enhanced high-intensity focused ultrasound in vivo. Ultrasound Med Biol ...http://www.alliedacademies.org/articles/experimental-study-of-applying-shear-wave-elastography-for-examining-effects-of-high-intensity-focused-ultrasound-ablation-against-8341.html