http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
스테인레스鋼 熔接部의 超音波減衰 및 거짓信號에 關한 硏究
姜錫哲,李然匹 韓國非破壞檢査學會 1983 한국비파괴검사학회지 Vol.3 No.1
Some studies have been made on the effects of the attenuation on the result of ultrasonic examination of austenitic stainless steel weldment and also on the cause of false indications. The differences in the amplitudes and the metal paths of the ultrasonic examinations have been measured experimentally, for two kinds of waves, one passed through only the parent material and the other one through the weldment. The effect of probe angles and frequency on the exmination data have been investigated using the shear wave. It has been found that the false indications were caused by back reflection from the weld metal surface due to the characteristics of ultrasonic wave propagation. It has been confirmed that the probe of 2.25 MHz and 60˚ is the best choice in the ultrasonic examination and that the correction of amplitude for attenuations is necessary.
TRISS Method를 이용한 외상 환자 관리의 평가
윤영국,서강석,이정헌,김종근,감신 대한응급의학회 1996 대한응급의학회지 Vol.7 No.2
Trauma is well known as a major cause of death and disability in Korea, but we do not have a optimal method to evaluate the trauma patients effectively. The purpose of this study was to predict the prognosis and mortality of the trauma patients and to evaluate the quality of trauma care by TRISS method. A retrospective study of 100 cases of trauma victims who visited to emergency room and was admitted to surgical intensive care unit of Kyungpook University Hospital from January 1994 to December 1995 by TRISS method was made. In this study, we have found out following results. 1. Sex ratio of male to female was 4:1 and the mean age was 44 years. 2. Analysis of injury mechanism showed high incidences of traffic accident(71%), fall down(14%), cultivator(5%), penetrating trauma(3%) in order of frequency. 3. A comparison between survivors and deaths showed difference in TS(14.81±1.31 vs.13.64±1.43), RTS(7.26±0.82 vs. 6.78±10.24 vs. 37.45±11.05), TRISS Ps-1 TS and ISS(0.93±0.11 vs. 0.79±0,15), and TRISS Ps-2 by RTS and ISS(0.89±0.15 vs. 0.73±0.19). 4. By TRISS method, unpredicted outcomes occurred in 11 of 100 with 10 unpredicted deaths and 1 unpredicted survivor by TRISS-1 and unpredicted outcomes occurred in 14 of 100 with 9 unpredicted deaths and 5 unpredicted survivors by TRISS-2. 5. The most common cause of death was chest trauma(36.4%). 6. The Z statics, quantitating the difference in the actual number of deaths and the predicted number of death, using TRISS-1 method was 0.84 and using TRISS-2 method was -0.57. The authors conclude that the real dead patients exceeded the predicted outcome in TRISS-1 and the real dead patients were less than the predicted outcome in TRISS-2, and our patient management as well as application of this method should be analyzed for accurate outcome. In conclusion, TRISS method offers a good approach for predicting the prognosis and mortality of the trauma patient and evaluating trauma care.
강석구,박동철,정재욱,정경윤 성균관대학교 기초과학연구소 1994 論文集 Vol.45 No.1
삼중 결합을 갖고 있는 2-프로핀일 고리카보네이틀 Pd(acac)_2와 nBu_3P을 촉매로 하여 포름산 암모늄염을 사용한 탈카르복실화-가수소분해반응을 이용해서 (Z)-호모알릴 알콜과 2-호모프로핀일 알콜을 반응조건에 따라 각각 합성하였다. 그리고 분자끝 2-프로핀일 고리카보네이트의 가수소분해반응을 이용하여 호모알릴 알콜을 합성하였다. (2S. 4Z)-1-(p-메톡시벤질옥시)-2-히드록시-4-헵틴 2b를 광학활성 중간체로 사용하여 pyralid 나방 Aphomia gularis의 male 성페르몬을 합성하였다. The decarboxylation-hydrogenolysis of prof-2-ynylic cyclic carbonates which have an internal acetylenic bond with ammonium formate in the presence of a catalytic amount of [Pd (acac)_2] and nBu_3P afforded(Z)-homoallylic alcohols or homoprop-2-ynylic alcohols dependin on the reaction conditions. however, hydrogenolysis of terminal prop-2-ynylic cyclic carbonates gave homoallylic aicohols; using (2S, 4Z)-1-(p-Methoxybenzyloxy)-2-hydroxy-4-heptyne 2b as a chiral synthon, the male sex pheronome of the pyralid moth Aphomia gularis has been synthesized.
진딧물의 경보페로몬인 (E)-β-Farnesene의 합성과 생물활성시험
강석구,정경운,이정운,고현관 성균관대학교 기초과학연구소 1986 論文集 Vol.37 No.1
(E)-β-Farnesene, the alarm pheromone of aphids was synthesized from nerolidol by reacting in a sealed tube at 150℃ for 24h with DMSO. Base(KOtBu/DMSO) catalized elimination of HCl from farnesyl chloride at 50℃ for 4h afforded (E)-β-farnesene as the major product. Farnesyl chloride was prepared from nerolidol or farnesol with SOCl_2 or HCl. Biological activity test of (E)-β-farnesene thus synthesized was conducted.
Bloom의 교육목표분류학에 대한 비판과 그 대안 탐구 : 일선 교사들의 인터뷰를 중심으로 On the Basis of the Teacher's Interview
강현석,정재임,최윤경 경북대학교사범대학부속 중등교육연구소 2005 중등교육연구 Vol.53 No.1
본 연구는 두 가지의 모티브로 시작되었다. 하나는 Bloom이 오래 전에 제안한 교육목표 분류학에 대한 현장 교사들의 반응에 대한 구체적 대안 찾기이며, 다른 하나는 교육목표분류학에 대한 최근의 일련의 개정 작업에서 발견되는 Bloom에 대한 대안의 모색이다. 교육목표분류학은 교육의 과정에서 중요한 도구로 기능을 해오고 있다. 도구는 항상 새롭게 만들어져야 한다. 학문적 논의와 현장의 실천적 노력에서 보다 정교하게 보완하고 그 대안을 모색 할 때가 되었다. 그것은 실제 수업이나 교사양성의 맥락에서 보다 구체화되어 적용되어야 한다. 본 연구에서는 그 작업의 일환으로 교사의 인터뷰와 몇 가지 대안을 단서로 하여 하나의 가능한 방안을 제시하고자 하였다. 학교교육의 중핵으로서 교육과정, 교수·학습, 평가의 문제는 교육목표분류학의 이론적 논의와 현장 실천의 문제가 연계되어야 하는 숙제를 안고 있다. This study starts with two kinds of motive. One is searching for practical alternatives of teachers' responses in service about Taxonomy of Educational Objectives Bloom suggested. The other is exploring alternatives of Bloom's Taxonomy of Educational Objectives recently. Taxonomy of Educational Objectives has functioned as a crucial instrument on the process of education. This kind of instrument should be made as a newer one. It is time this instrument should be made as a newer one. It is time this instrument were made to be revised precisely and alternatives of that were explored through disciplinary discourse and practical efforts in service. It should be applied to be specified in the context of instruction and cultivating teachers. The study has tried to suggest possible alternatives on the basis of teachers' interview and some Taxonomy of Educational Objectives as a clue. A matter of curriculum, teaching · learning , and evaluation should be considered in connection with theoretical discussion on Taxonomy of Educational Objectives and a practical matter in service.
뚜렷한 입체 선택성을 갖는 알릴 디올의 고리 카보네이트와 아세토니드의 Wacker 산화 반응 연구
강석구,정경윤,정재욱,남궁은영,김태현 성균관대학교 기초과학연구소 1995 論文集 Vol.46 No.1
Palldium(Ⅱ) 촉매 하에서의 말단 알릴 디올의 고리 카보네이트와 아세토니드의 산화반응은 anti-Markovnikov hydation에 의해 알데히드 또는 α,β-불포화 알데히드 만이 생성되었다. 치환된 알릴 디올의 분자내 이중 결합의 반응으로는 (E)-알릴 디올의 경우에 β-케토 생성물을, 반면에 (Z)-알릴디올의 경우엔 α-케토 생성물을 얻을 수 있었다. 치환된 알릴 디올의 고리 카보네이트와 아세토니드에서는 각각 β-케토 화합물과 α,β-케토 화합물 들이 생성되었다. Palladium(Ⅱ)-Catalyzed oxidation of acetonides or cyclic carbonates of terminal allylic diols afforded aldehydes or α,β-unsaturated aldehydes as the sole products, resulting of anti-Markovnikov hydation. For the internal olefins of the substituted allylic diols, (E)-allylic diol provied β-keto-product, whereas (Z)-allylic diol affored α-keto-product. The acetonides and cyclic carbonates of the substituted allylic diols yielded β-keto-products and α,β-unsaturated ketones, respectively.
강석구,정경윤,박찬희,남궁은영,김태현 성균관대학교 기초과학연구소 1995 論文集 Vol.46 No.2
The coupling reaction of iodobenzene with allylic diols in the presence of Pd(OAc)_2 and nBu_3P as catalysts using K_2CO_3 as base afforded the phenyl-substituted allylic diols. However, under the same reaction conditions with Et3N as base, phenyl-substituted α-hydroxy ketone was obtained.