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Study of physisorption of volatile anesthetics on phos-pholipid monolayers using a highly sensitive quartz crystal microbalance (HS-QCM)

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Journal of Biophysical Chemistry 2011年第2期2卷 68-74页

作者： Yasushi Yamamoto Zameer Shervani Takatsugu Shimoaki Daisuke Yoshida Takashi Yokoyama Tadayoshi Yoshida Keijiro Taga Hiroshi Kamaya issaku ueda 不详

We have investigated the interactions between phospholipid monolayers and volatile anest-hatics. Two monolayers (dihexadecyl phosphate (DHP) and dipalmitoyl phosphatidyl choline (DPPC) and two anesthetics (halothane and enflurane) were used to observe these interac-tions using a highly sensitive quartz crystal microbalance (HS-QCM). The concentration of each anesthetic in aqueous solution was kept at 4 mM. The frequency of QCM showed no change when halothane was added to the DHP monolayer, however, it responded and de-creased when interaction occurred with DPPC monolayer. In case of enflurane addition the frequency decreased in both the monolayers of DHP and DPPC. The frequency change followed the following order of monolayer-anesthetic interactions: DHP-halothane

关键词： Physisorption Phospholipid Monolayers Quartz Crystal Microbalance (QCM) Anesthetic Hydrate Monolayer-Water Interface

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Experimental Study of Condensation Heat Transfer on Tube Bundles in Large Power Plant Condensers

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Journal of Energy and Power Engineering 2014年第5期8卷 920-928页

作者： Koichi Inoue issaku Fujita Kotaro Machii Satoshi Hiraoka Manabu Ishihara Faculty of Environmental Engineering The University of Kitakyushu Fukuoka 8080135 Japan Takasago Machinery Works Mitsubishi Heavy Industries Ltd. Hyogo 6768686 Japan

In order to clarify the effect of condensate inundation on steam condensation in a large tube bundle, condensation heat transfer and the condensate flow pattern in the tube bundle have been experimentally investigated. Test tube bundle consists of 36 cooling tubes, 12 condensate supply tubes and 24 un-cooled dummy tubes. Cooling test tubes are made of copper and have an outer diameter of 19.1 mm and condensing length of 150 mm, Steam flows horizontally through the test tube bundle at gap velocities 15-27 m/s at pressures of 8.8 kPa. In this study, experimental data about condensate flow pattern and condensation heat transfer in a tube bundle were collected for the optimization of tube arrangement in large power plant condensers.

关键词： Condensation inundation condenser tube bundle tube arrangement power station.

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