There are various bubble cavitation phenomena in daily production and life, near-wall is the most common one. This paper studies dynamics between a rigid wall an elastic wall, by changing distance two walls initial position of bubble, several different collapse patterns obtained. Then, we discuss changes migration distance, gravity, maximum radius during cavitation. Finally, numerical simulatio...

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Actinometric measurements of NO2 photolysis frequencies in the atmosphere simulation chamber SAPHIR B. Bohn, F. Rohrer, T. Brauers, and A. Wahner Institut für Chemie und Dynamik der Geosphäre II: Troposphäre, Forschungszentrum Jülich, 52425 Jülich, Germany Received: 25 October 2004 – Accepted: 2 December 2004 – Published: 8 December 2004 Correspondence to: B. Bohn ([email protected]) © 2004 ...

Unambiguous identification of esters as oligomers in secondary organic aerosol formed from cyclohexene and cyclohexene/α-pinene ozonolysis L. Müller, M.-C. Reinnig, J. Warnke, and T. Hoffmann Johannes Gutenberg-Universität, Institut für anorganische Chemie und analytische Chemie, Duesbergweg 10–14 55128 Mainz, Germany Received: 2 August 2007 – Accepted: 9 September 2007 – Published: 26 Septembe...

horacoplasty evolved as a procedure designed to T treat empyema, although modern day thoracic surgeons more commonly use this modality to obliterate persistent pleural spaces after resection. Thoracoplasty is the operative removal of the thoracic cage, which usually involves the subperiosteal resection of several ribs. The principle behind thoracoplasty is that by removing the skeletal support,...

Kalk continued his studies after the first world war and passed the medical examination in 1921. In 1927, he was chosen to be a senior physician under Bergmann at the Chariete Hospital in Berlin. Kalk was probably unfamiliar with Kelling's and Jacobaeus' work when he first became interested in laparoscopy. He performed his initial experiments in laparoscopy with a cystoscope inserted through th...

The operative indications for rib fracture repair have been a matter of debate. However, several reports have suggested that flail chest, pain on respiration, and chest deformity/defect are potential conditions for rib fracture repair. We describe our experience of rib fixation in a patient with severe chest deformity due to multiple rib fractures. A 70-year-old woman was admitted with right-si...

Magnetotactic bacteria precipitate intracellular crystals of single-domain magnetite (Fe3O4) and/or greigite (Fe3S4), which have often been implicated in carrying the natural remanent magnetization (NRM) of freshwater and marine sediments. In vivo, the magnetic crystals are usually aligned in chains such that their moments add together, generating net cellular moments high enough to rotate the ...

This study performed a fluid/material coupled numerical simulation of the first stage non-spherical collapse bubble near wall and investigated stress state inside elastic material according to change in stand-off distance γ between wall. The relationship behavior propagation waves was confirmed for typical modes: pancake-shaped mode at = −0.3, hemispherical 0, microjet 0.3 < 1.0, detaching &...