小物 Feeding을 위한 專用 自動化 기기의 開發

장종훈(Jang Jong_hun),김재열(Kim Jae_yeal),홍석주(Hong Suk_ju) 한국생산제조학회 1997 한국공작기계학회 추계학술대회논문집 Vol.1997 No.-

Lipase를 이용한 아민의 분할

경석현 建國大學校 附設 農業資源開發硏究所 1999 農資源開發論集 Vol.21 No.-

ABSTRACT Various chiral amines were resolved by Pseudomonas alcaligenes lipase as catalyst. That is, when chiral amines were treated with ethylacetate in the presence of catalytic amount of lipase, only one enantiomer of chiral amines reacted selectively with acetylating agent forming corresponding optically active acetamides. And the enantiomeric excess(% ee) of resoved products were good to excellent(86.5∼99.8%) respectively.Key words : Amine, Racemic resolution, Pseudomonas alcaligenes lipase.

工業敎育大學의 實驗實習施設 共同活用 및 運營에 關한 硏究

尹錫天,牟相榮,權五憲,千炳善,周赫鍾,李永臣,金健中,羅聲雄,洪錫雨,吳德成,盧泰天 충남대학교 공업교육연구소 1983 論文集 Vol.6 No.2(A)

The College of Engineering was specialized to have a sole function for supplying technical high school teachers in 1977 and referred to as the College of Industrial Education according to the Government's policy. The economic impact mainly due to the oil-crises caused a severe problem to this college, namely discrepancy of supply to demand scale. Accordingly the number of student enrollment was to be fluctuated from 479 in 1979 through 800 in 1979 and 900 in 1980 to 430 in 1981. And the engineering departments have been attached to this Engineering Education College since 1981. These circumstanses met singnificant inefficiency in facility operation. This program aims at providing an overall relocation of the college facilities and preparing the practical system to make the joint-operation possible taking into account circulation, academic stream, budget, maintenance, etc. However this study could not get optimal spacing but some trade-off, considering the current situation.

다공성 실리콘의 제작 및 특성 연구

문병훈,최석호 慶熙大學校 材料科學技術硏究所 1994 材料科學技術硏究論集 Vol.7 No.-

Microstructure, photoluminescence(PL) spectra, persistent photocurrent(PPC), adsorbates and bias effects on current, and FTIR(Fourier Transform Infrared Spectroscopy) spectra have been studied for porous silicon(PS) samples fabricated under various preparation conditions. There has been found no relation between pore size of PS and its PL peak energy, but strong relation between metastable effects such as current changes due to light, air and bias and chemical adsorption of air molecules on its surface. These experimental results are explained based upon adsorbates related band scheme.

OMT 모델을 기반으로 한 관계형 데이타베이스 설계 시스템의 구현

정헌석,이은경,임해철,김용환 弘益大學校 科學技術硏究所 1997 科學技術硏究論文集 Vol.8 No.-

Database design is the base of the entire process related to the database, and the well-designed database schema has a great effect on the system performance. So, there's a growing need for the automatic schema generation system. In this paper, database design automation system is implemented which translates automatically OMT based database model to relational database table. For developing this system, transformation rules of OMT into RDB schema are suggested which satisfy normalization and integrity constraints. This automation system can be used efficiently in the area of training database system and applying database design in actual business fields.

外傷後神經症에 관한 臨床的 考察

姜錫憲,金映辰 大韓神經精神醫學會 1982 신경정신의학 Vol.21 No.2

The purpose of this study is to delineate some clinical characteristics of post-traumatic or accident neuroses; family and economical back ground, clinical symptomatology and diagnosis, and problems surrounding compensation. The authors collected the clinical records of 99 post-traumatic psychiatric inpatients and outpatients at Kyungpook and Kyemyung University Hospitals and three other private psychiatric clinics at Daegu area, during a period of two years from January 1st, 1979 to December 31, 1980. Out of the 99 post-traumatic cases, 19 cases with organic brain syndromes were excluded in the present study. Of all the 80 cases, 38 cases were interviewed by the authors and 42 by other psychiatrists. The results obtained could be summarized as follows; Of all the 80 post-traumatic cases, the number of male patients was 51 and that of female was 29, the male to female sex ratio being 1.8:1. Slightly over half of them were in their thirties and forties. The educational level of about two thirds of the patients was below middle school. 16% of them were unemployed, and 25% laborers. And majority of them belonged to low social classes. In the psychiatric interview, they showed a variety of difficulties; financial difficulties (25%), interpersonal conflicts (18%), vocational dissatisfaction (9%), and other physical illnesses (4%). Most frequent symptoms of the post-traumatic neurotics were headache (78%), insomnia (43%), dizziness (34%), memory loss (29%), anxiety (25%) and loss of interest (25%). As to the clinical diagnostic classification (ICD-9), 55% was diagnosed as hysteria, 19% as anxiety neurosis, 14% as neurotic depression, 6% as hypochondriasis and 2% as phobic neurosis. The average period of hospitalization was 50.3 days, and the duration from the time of trauma to the first psychiatric visit was 35.5 days in average. Finally, the authors had the impression that the course of post-traumatic neuroses was much influenced by the attitudes of the offenders and the court process of the compensation itself.

小兒精神科病室의 環境療法 : the milieu therapy

姜錫憲 慶北大學校 醫科大學 1980 慶北醫大誌 Vol.21 No.2

The purpose of this paper is to describe an approach of a short term child psychiatry unit. The paper gives a brief literature riview of milieu therapy, therapeutic community, and children's psychiatric hospitals. Secondly a historical review of the philosophy and structure of the Child Psychiatry Unit at the Mount Sinai Medical Center, New York City, and thirdly, a description of some of the principles which form the basis for the practices on this ward. In conclusion, the author stressed the difference between the milieu therapy of the Child Psychiatry Unit of the Mount sinal Medical Center and that modelled along a developmental/educational paradigm. The therapeutic techniques of the ward varies including ego supportive and ego interpretive methods. The therapeutic activities program of the ward provides for each child to develop his cognitive and social skills. The nursing staff supports the child, helps his social skills and provides for new models of identification. In addition, the method of ego interpretation is a valuable tool that even in a short term treatment provides for ego development and progression by enabling the child to gain some insight and control over some of his instinctual urges.

Silent Discharge와 TiO₂광촉매 산화반응을 이용한 VOCs 처리

박석출,정창훈,서정민,최금찬 동아대학교 환경문제연구소 1999 硏究報告 Vol.22 No.2

This study has been carried out for evaluation of VOCs treatment let out at the industrial field using a silent discharge process through process approvement and TiO₂ photocatalytic oxidation. And it was presented experimental results on the silent discharge plasma and TiO₂ photocatalytic oxidation processes at atmospheric pressure gas streams containing diluted concentrations of benzene, toluene, and xylene out of VOCs. It has shown that each concentration, background gas, flowrate, and applied power have effected on three materials decomposition and byproduct distribution. Analyses of benzene, toluene, xylene and byproduct concentration was carried out by GC-FID.

Benzyltrichlorotitanium(Ⅳ)의 카르보닐 화합물과의 반응성에 관한 연구

慶錫憲 건국대학교 1992 學術誌 Vol.36 No.2

Treatm2ent of C6H5CH2MgCl with TiCl4 recults in formation of C6H5CH2TiCl3 chemoselectively with catbonyl compounds. For example, C6H5CH2TiCl3 reacts exclusively to form 2-phenyl-2-octanol when it was treated with the 1:1 mixture of 2- heptanone

초음파 트랜스듀서용 PZT-고분자 1-3-0형 복합압전체의 유전 및 압전특성

양윤석,최헌일,사공건 東亞論叢 1999 東亞論叢 Vol.36 No.-

In this study, piezoelectric composites with 1-3-0 connectivity have been studied. A piezoelectric ceramic PZT prepared by the Wet-Dry Combination method is used as a filler phase in mixture of the third filler phase and Eccogel polymer matrix. The density and stiffness of 1-3-0 type composites were decreased with increasing the third phase.