نتایج جستجو برای: cavitation cloud

تعداد نتایج: 93856  

2016

Cavitation is a specific phenomenon in a liquid if any changes occur in the pressure field over time and distance. The effects of cavitation have become very useful in supporting chemical processes in the environmental protection technologies, especially in technologies related to the decomposition of substances particularly harmful to humans and his immediate surroundings. Cavitation can be re...

2013
Jianguo Wu Shiyu Zhou Xiaochun Li

In the manufacturing of micro/nanocomposite materials, micro/nanoparticles need to be dispersed evenly into the base materials. However, due to their high surface-to-volume ratio and high surface energy, the micro/nanoparticles tend to agglomerate and cluster together. Ultrasonic cavitation is effective to disperse micro/nanoparticles. However, works on correlating the cavitation parameters wit...

The reconstruction of the information contaminated by cloud and cloud shadow is an important step in pre-processing of high-resolution satellite images. The cloud and cloud shadow automatic segmentation could be the first step in the process of reconstructing the information contaminated by cloud and cloud shadow. This stage is a remarkable challenge due to the relatively inefficient performanc...

1999
STEPHEN D. DAVIS JOHN S. SPERRY UWE G. HACKE

The centrifuge method for measuring the resistance of xylem to cavitation by water stress was modified to also account for any additional cavitation that might occur from a freeze-thaw cycle. A strong correlation was found between cavitation by freezing and mean conduit diameter. On the one extreme, a tracheid-bearing conifer and diffuse-porous angiosperms with small-diameter vessels (mean diam...

Journal: :The Review of scientific instruments 2011
Bjoern Gerold Spiros Kotopoulis Craig McDougall David McGloin Michiel Postema Paul Prentice

Acoustic cavitation can occur in therapeutic applications of high-amplitude focused ultrasound. Studying acoustic cavitation has been challenging, because the onset of nucleation is unpredictable. We hypothesized that acoustic cavitation can be forced to occur at a specific location using a laser to nucleate a microcavity in a pre-established ultrasound field. In this paper we describe a scient...

2008
Y. Sekine H. Soyama

Cavitation normally causes severe damage in hydraulic machinery such as pumps, valves and so on. However, cavitation impact can be utilized to surface treatment to improve fatigue strength of metallic materials in the same way as shot peening. A peening method using cavitation impact was named as “cavitation shotless peening” or “cavitation peening” as shots are not required. As increase of sur...

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