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임상연구 : 후두경을 이용한 이중관 기관지 튜브 삽관 시 심혈관계 반응을 억제하는 Remifentanil의 적정 용량
신형용 ( Hyoung Yong Shin ),서보병 ( Bo Byoung Seo ),이용철 ( Yong Cheol Lee ),김진모 ( Jin Mo Kim ),김애라 ( Ae Ra Kim ),장영호 ( Young Ho Jang ),배정인 ( Jung In Bae ),홍지희 ( Ji Hee Hong ) 대한마취과학회 2007 Korean Journal of Anesthesiology Vol.53 No.1
Background: The purpose of the present study was to determine the optimal dose of bolus remifentanil to attenuate hemodynamic changes to laryngoscopic double-lumen endobronchial intubation. Methods: A total of 80 ASA I or II patients requiring double-lumen endobronchial intubation were randomly assigned to receive normal saline (NS) or one of the three different doses (0.5μg/kg (group R0.5), 1.0μg/kg (group R1.0) or 2.0μg/kg (group R2.0)) of remifentanil. Study drugs for each group were administered over 30 seconds after induction of anesthesia with thiopental sodium and rocuronium. Laryngoscopic endobronchial intubation was carried out 90 seconds after the administration of study drug. Arterial blood pressure and heart rate were recorded at preanesthetic baseline, preintubation, postintubation, and every one minute during the initial 5 minute period after intubation. Results: Mean arterial pressure at postintubation period increased significantly compared to baseline value in group NS, R0.5, and R1.0, but there were no significant changes in group R2.0. Heart rate showed significant increase in comparison to baseline value at every postintubation period in group NS, R0.5, R1.0, with no significant changes in group R2.0. Conclusions: We suggest that 2.0μg/kg of remifentanil attenuate the hemodynamic changes to double-lumen endobronchial intubation without adverse effect. (Korean J Anesthesiol 2007; 53: 48~53)
RF 마그네트론 스퍼터링에 의한 ZnO 박막 SAW 필터에 관한 연구
박용욱,신형용,박정흠,강종윤,심성훈,최지원,윤석진,김현재,김경환 한국전기전자재료학회 2001 전기전자재료학회논문지 Vol.14 No.6
ZnO thin films on glass substrate were depostied by RF magnetron reactive sputter with various argon/oxygen gas ratios and substrate temperatures. Crystallinities, surface morphologies, chemical compositions, and electrical properties of the films were investigated by XRD, SEM, XPS and electrometer(keithley 617). All films showed a strong preferred orientation along the c-axis on glass substrate, and the chemical stoichiometry was obtained at Ar/O$_2$.=50/50. The propagation velocity of ZnO SAW filter was about 2,590 m/sec and insertion loss was a minimum value of abut -21dB.
조승열,신형용,강신영 중앙대학교 의과대학 의과학연구소 1982 中央醫大誌 Vol.7 No.1
The purpose of this study was to observe whether the total body length could be used as a developmental indicator in female Enterobius vermicularis. A total 699 female pinworms from 1.66㎜ to 9.27㎜ long were collected by chemotherapy from infected children. And the worms were cleared with lactophenol, and mounted on the slide glass in the medium of glycerin jelly. The length of anterior end(from anterior end to posterior margin of esophageal bulb), the length of trunk(from posterior margin of esophageal bulb to anus), the length of sexual organs in the trunk, the iength of tail, the maximum width, and the total body length were measured by using micrometer in each worm. And the developmental status of sexual organs were observed. The results were summarices as follows: 1. When the total body length grew from 1.66㎜ to 9.27㎜(by 5,6 times), the length of anterior end grew only 2 times, that of tail grew 5.2 times, whereas the length of trunk grew 7 times. 2. The growth of trunk was accompanied by the development of sex organs, such as vagina, saccular sac, ovary, uterus, and intrauterine eggs. The worms under 3.00㎜ showed the development of vagina, saccular sac and only limited growth of ovary. And the out-growth of ovary was remarkable in the worms around 3.50㎜. The uterus showed marked growth in worms over 4.00㎜. Eggs began to be deposited in the uterus in worms of 6.0㎜ long. 3. The sexual organs occupied only 20% of trunk length in worms of 2㎜ long, and 27.8∼42.0% in worms of total body length, 3∼4㎜. In the gravid stages of female pinworms(7.51∼9.27㎜ long), about 90% of trunk length was occupied by the full-grown ovary and egg-laiden uterine loops. Above results showed that the growth of female pinworm was accompanied by the growth of trunk, with which the sexual organs developed in parallel. From this observation, it was concluded that the total body length was a good indicator of development in female Enterobius vermicularis.
이민섭,신형용,전윤배 단국대학교 2000 論文集 Vol.35 No.-
There are various nonlinear criteria testing nonlinear combining functions which are used in stream cipher system. They are balancedness, nonlinearity, correlation immune order, resilient, bent and so on. Also, there are relationships among them. In this paper we investigate relationships among them, and present an algorithm generating bent functions and resilient functions. Also, when the table representing all function valued of a boolean function on GF(2)^n is given, we find the algebraic normal form from the given table and present the algorithm for testing various nonlinear criteria for the function.