Octyl β-D-glucopyranoside (OGP) has been reported to completely inhibit cavitation-induced cell lysis in vitro, possibly by quenching critical free-radical effects. In this study, the influence of OGP on cell lysis in a 60 rpm rotating-tube exposure apparatus was assessed. HL-60 cell lysis was estimated with a Coulter Multisizer counter. Cavitation activity from the 2.3 MHz, 30 s duration expos...

Resistance to water-stress induced cavitation is an important indicator of drought tolerance in woody species and is known to be intimately linked to the anatomy of the xylem. However, the actual mechanical properties of the pit membrane are not well known and the exact mode of air-seeding by which cavitation occurs is still uncertain. We examined the relationship between cavitation resistance ...

Cavitation is harmful to water turbines and may cause operation delays of several weeks. The real-time detection of cavitation risk is increasingly important, and even narrow cavitation-free power ranges can be utilised in load optimisation. Higher derivative signals x and x calculated from acceleration signals are very suitable for detecting impacts. This paper introduces a generalised moment ...

BACKGROUND AND AIMS Extreme water stress episodes induce tree mortality, but the physiological mechanisms causing tree death are still poorly understood. This study tests the hypothesis that a potted tree's ability to survive extreme monotonic water stress is determined by the cavitation resistance of its xylem tissue. METHODS Two species were selected with contrasting cavitation resistance (...

We report on cavitation in confined microscopic environments which are commonly called microfluidic or lab-on-a-chip systems. The cavitation bubble is created by focusing a pulsed laser into these structures filled with a light-absorbing liquid. At the center of a 20 microm thick and 1 mm wide channel, pancake-shaped bubbles expand and collapse radially. The bubble dynamics compares with a two-...

IN recent years a number of papers treating linearized free-streamline problems have appeared subsequent to Tulin's introductory paper on this subject [1] .1 Among these may be mentioned Wu's extension of Tulin's method for supercavitating hydrofoils with arbitrary shape and cavitation number [2], hydrofoils with cavitation only near the leading edge. [3], supercavitating hydrofoils in cascade ...

Cavitation, as a unique technology for influencing liquid substances, has attracted much attention in the oil refining industry. The capabilities of cavitation impact can initiate destruction molecular compounds liquid. At same time with large number successful experimental studies on treatment hydrocarbon raw materials, not been introduced Often impossibility implementation is based lack unifi...

In the therapeutic ultrasound field, the cavitation frequently forms a bubble cloud that consists of many microbubbles. A method to control the violent collapse of cloud cavitation is being developed. It is comprised of two frequency ultrasound. The first is a higher frequency ultrasound waveform that makes cloud cavitation at the surface of the object. The second is a lower frequency waveform ...

The objective of this study is to investigate the collapsing behavior cavitation, which leads erosion material. An experimental examination was conducted in a channel with semi-circular cylinder obstacle, serves as “vortex cavity” generator. Cavitation achieved by employing range pressure differences over test section and high-speed camera used observe cavitation behavior. flow field behind inv...