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임상연구 : 중이수술 후 오심과 구토 예방을 위해 투여한 Midazolam의 효과
정재식 ( Jae Sik Jung ),전영훈 ( Young Hun Jeon ) 대한마취과학회 2007 Korean Journal of Anesthesiology Vol.52 No.5
Background: Midazolam has been reported to decrease postoperative nausea and vomiting (PONV). We studied the antiemetic effect of midazolam after middle ear surgery. Methods: In this prospective, randomized, double-blind, placebo-controlled study, 90 healthy patients were scheduled for middle ear surgery (tympanomastoidectomy and tympanoplasty). Patients were randomly divided into two groups; Midazolam 0.075 mg/kg (n = 45) or normal saline (n = 45) was administered after induction of anesthesia. The incidence of PONV, metoclopramide and ketorolac usage, pain, sedation, and other side effects were assessed at 6, 24 h after the operation. Results: The incidences of PONV were 15 (33%) in midazolam group and 27 (60%) in placebo group during 24 h postoperatively. The incidence of PONV in midazolam group was significantly lower than that in placebo group (P < 0.05). There were no significant differences between groups in adverse events. Conclusions: Midazolam 0.075 mg/kg was effective for preventing PONV after middle ear surgery without significant adverse effects. (Korean J Anesthesiol 2007; 52: 550~5)
질화처리에 의한 기판 평면 평활도의 변화가 GaN 성장에 미치는 영향
정재식,변동진,김병화,이재인,유지범,금동화,Jeong, Jae-Sik,Byeon, Dong-Jin,Kim, Byeong-Hwa,Lee, Jae-In,Yu, Ji-Beom,Geum, Dong-Hwa 한국재료학회 1997 한국재료학회지 Vol.7 No.11
LED와 LD의 수명과 효율은 결정에 존재하는 결함의 밀도에 반비례하며, 이러한 결함의 밀도는 적당한 기판을 사용하거나, 기판의 표면을 적절하게 제어함으로써 줄일 수 있다. GaN성장시 원자 단위의 매끄러운 표면은 완충충 성장이나 질화처리를 함으로써 얻어질 수 있다. 이렇게 얻어진 원자 단위의 매끄러운 표면에 의해 기판과 박막상이의 계면 자유에너지가 감소하기 때문에 2D성장이 촉진된다. 사파이어(AI$_{2}$O$_{3}$(0001))기판을 사용한 GaN 왕충충성장과 진화처리에 대한 최적조건은 AFM(Atomic Force Microscope)측정 결과에 의해 결정되었다. AFM에 의해 얻어진 표면 평활도의 개념은 사파이어 기판을 사용한 GaN박막성장의 최적조건을 결정하는 데 있어서 높은 신뢰도를 가질 수 있다.
흄과 들뢰즈의 공감 이론 사용법: 경험론의 문학적 사용 가능성에 관하여
정재식 ( Jae Sik Chung ) 한국18세기영문학회 2007 18세기영문학 Vol.4 No.2
This paper aims to examine the core of Hume`s theory of sympathy and empiricism by focusing on the way in which Deleuze creates his theory of sympathy based on his original interpretation of Hume. Furthermore, we seek to devise a new mode of literary theory, which is strongly informed by the creative encounter between sympathy and empiricism. For this project, beyond the limitation of the traditional understanding of empiricism, we newly define Hume`s empiricism as the art of generating, maintaining, transforming and expanding the power of "vivacity." In this new definition, Hume`s empiricism does not simply refer to a mode of thought that privileges the impression over the ideas, but also the faculty of thought/feeling to stimulate a new vivacity from memory, idea, and habit, and furthermore, transform it into the vital power of creative and diverse practices in life. Based on the new understanding of Hume`s empiricism, we argue that the core of his theory of sympathy is to convert the new vivacity into the power of invention that can construct the creative community in ethical and aesthetical sense. In the case of Deleuze, who interprets Hume as the great thinker of "the relation of immanence," sympathy comes to be a principle of connection based on the dynamic flow of differences in life and the logic of "AND." Based on the theory of the relation of immanence, Deleuze offers the mode of resonance in the experience of sympathy, which can overcome the violence of the perverse gaze in the mode of male-centered sympathy. Inspired by Hume`s and Deleuze`s theory of sympathy, we investigate creative ways of writing that is informed by the spirit of empiricism. Such styles of writing can powerfully express the real of life with vivacious aesthetic language, eradicating the empty bubble of abstract idealism and affirming the free flow of differences. Referring to the innovative literary techniques and profound understanding of life in the works of Samuel Richardson, Jane Austen and Laurence Sterne, this paper explores the creative but overlooked connection between literature and empiricism.