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이원구,조백기,박연래 대한피부과학회 1978 大韓皮膚科學會誌 Vol.16 No.3
We report a patient with dermatitis caused by the bite of Omithonyssus bacoti (Hirst, 1913), commonIy referred to as the tropical rat mite. The bite of this mite resulted in a severely pruritic papular eruption in our patient, 32 year old Korean housewife, and her two daughters. We found the mites on the patients skin and also on dead rats captured from the patients house. Though we think that the rat mite d.ermatitis is not infrequent disease, we are going to report the case because the people are apt to overlook the disease and it can become an occupational hazard.
이원구,Jun Keun Chang,Chanil Chung,한동철,윤호영,Hwa Joon Park,방현우,이준모,Junha Park,Keunchang Cho 한국물리학회 2006 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.48 No.4
Today’s optical trapping techniques have been frequently used in severe blood-disease-related studies using plastic microfluidic devices. Most fabrication methods provide several types of rectangular microchannels for these devices. However, most existing optical trapping models tend to reflect only a few geometric properties of these microchannels and only some morphological shapes of the targets effectively. In this article, a new model for the optical trapping efficiency of a biconcave red blood cell (RBC) flowing in a rectangular microchannel is presented. The hydrodynamic drag force is theoretically corrected using the concept of the sphericity index of the RBC. The effect of the channel geometry on the optical trapping efficiency is numerically simulated and compared with that of the existing model. Furthermore, an implication of this correction for clinical applications in a disposable plastic microfluidic device is discussed.cro