This system allows the user to make one long recording, or numerous recordings at various lengths until the memory is full. Once a recording has been made, it will remain in the memory until it is deleted - unlike other high speed video systems which lose all recordings when they are powered off. This system is computer based running under win 2000 and has a 120 GB hard drive for image storage.
Longer recording times are available at lower speeds. Koita Taketashi, Sun Mingyu (2014) Visualization of underwater shock wave and bubble phenomena induced by electric discharge in a narrow water tank.The Photron DVR can record for up to 30 minutes in monochrome or colour, at speeds of 500, 10 fps. J Fluid Mech 6:583–598Ībe A, Wang J, Shioda M, Maeno A (2014) Observation and analysis of interactive phenomena between microbubble and underwater shock wave. Miles JW (1959) On the Generation of surface waves by shear flows part 3. Hasegawa Hiroaki, Masaki Yasuhiro, Matsuuchi Kazuo, Yoshida Yusuke (2006) Microbubble generation by using pipe with slits. In: 28th International Symposium on Shock Waves vol 2, pp 915–921 Nobuhito Tsujii, Biyu Wan, Haruo Mimara, Akihisa Abe (2012) Experimental study on inactivation of marine bacteria using electrodischarge shock wave. Curr Option Biotechnol 16:89–92Ĭhu Libing, Xing Xinhui, Anfeng Yu, Zhou Yunan, Sun Xulin, Jurcik Benjamin (2005) Enhanced ozonation of simulated dyestuff wastewater by microbubbles. Morawski Anne M, Lanza Gregory A, Wickline Samuel A (2005) Targeted contrast agents for magnetic resonance imaging and ultrasound. Kaufmann Beat A, Lindner Jonathan R (2007) Molecular imaging with targeted contrast ultrasound. Takahashi M, Chiba K, Li P (2006) Free-Radical generation from collapsing microbubbles in the absence of a dynamic stimulus. Xu Q, Nakajima M, Liu Z, Shiina T (2011) Biosurfactants for microbubble preparation and application.
Wang J, Abe A (2015) A hybrid analytical model of sterilization effect on marine bacteria using microbubbles interacting with shock wave. Shock Waves 17:143–151Ībe A (2010) Pressure generation from micro-bubble collapse at shock wave loading. J Chem Technol Biotechnol 85:19–32Ībe A, Mimura H, Ishida H, Yoshida K (2007) The effect of shock pressures on the inactivation of a marine Vibrio sp. Tsolaki E, Aiamadopoulos E (2010) Technologies for ballast water treatment: a review. In: International Conference on Ballast Water Management for Ships, Agenda Item 8, 16 February 2004 International Maritime Organization (2004) Adoption of international convention for the control and management of ships’ ballast water and sediments. In addition, it is found that shock waves without microbubbles also have the capacity of sterilization, and this means that cavitation bubbles generated behind converging shock waves contribute to inactivating marine bacteria. The experimental results show that the supply of microbubbles increases the potential of shock sterilization. Propagation behavior of shock waves and generation process of microbubbles are captured by high-speed camera.
#FASTCAM SA 5 FULL WELL CAPACITY GENERATOR#
The microbubble generator can produce microbubbles of around 50 μm diameter by means of Kelvin–Helmholz instability and Venturi effect. The microbubbles are generated independently. The shock waves are focused to increase the pressure that the generated microbubbles are exposed to. Underwater shock waves are produced by electric discharge in a semi-ellipsoidal discharge reflector. A bio-experiment is carried out using marine Vibrio sp.
In this paper, shock sterilization using the motions of microbubbles induced by underwater shock waves is verified experimentally.