PTT단위를 갖는 액정중합체의 합성 및 블렌드

김원,최유성,이태양,최재곤,홍완해,조병욱 조선대학교 생산기술연구소 2003 生産技術硏究 Vol.25 No.1

This study explores the potential of improving the physical properties of poly(trimethylene terephthalate) (PTT) by inducing thermotropic liquid crystalline polymers. The TLCP was synthesized by polycondensation reaction of terephthaloyl chloride with corresponding diols. The TLCP used was copolymers containing random PTT groups on the polymer backbone. The PTT moieties were used to increse compatibility between the PTT and the TLCP. The TLCP showed the nematic phase above those melting temperature(T_m) The TLCP seems to act as plasticizers and nucleating agents in the matrix polymers Liquid crystalline phase did not reaveal any significant macrophase separation and thermal degradaton under the temperature of processing condition.

MMA계 폴리머 시멘트 모르타르의 중성화에 대한 저항성

조영철,형원길,김완기,소양섭 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1(구조계)

At present, the polymer-modified mortars are used as high-performance as well as multi-functional materials in the construction industry. The purpose of this study is to synthesize polymer to modify in cement mortars and make test samples to understand the resistance of carbonation. This paper deals with the effect of monomer ratio and polymer-cement ratios on the typical properties of polymer-modified mortars using Methylmethacrylate-Butyl Acrylate(MMA/BA) latexes synthesized through emulsion polymerization. From the results, we knew that the resistance for carbonation of polymer-modified mortars using Methylmethacrylate- Butyl Acrylate latexes is increased with an increase in the monomer ratio of MMA/BA and the polymer-cement ratio. the resistance for carbbaonation of polymer-modified mortars using Methylmethacrylate-Etyl Acrylate latexes is increased with an increase in the polymer-cement ratio. The most resistance for carbonation is MB8 and ME6 polymer-modified mortar.

주정중독 환자 배우자의 불안과 우울 성향 및 가정생활

강병조,임완빈,김승팔 大韓神經精神醫學會 1986 신경정신의학 Vol.25 No.4

The study was designed to investigate the anxious and depressive trends in the wives of alcoholic patients. For the purpose of assessment of anxiety and depression, Zung's self-rating anxiety-(SAS) and depression scales (SDS) were applied to the fifty wives of alcoholics, the latter were admitted to the psychiatric wards of Taegu Catholic Hosp. and Kyungpook National Univ. Hosp. from Jan 1 '84 to Sep. 30 '85 and were diagnosed according to DSM- criteria. And the two scales were also applied to the fifty wives of social drinkers as a control group. The results were as follows; 1) The mean SAS scores were 53.06±9.66 in the wives of alcoholics and 38.64±8.75 in the control group and so the difference was significant in anxious trends (p<0.01) between two groups. 2) The mean SDS scores were 54.00±10.20 in the wives of alcoholics and 42.64±7.80 in the control group and so the difference was significant in depressive trends (p<0.01) too between two groups. 3) As for the frequency order of the SAS items in the wives of alcoholics, they were apprehension, insomnia, restlessness and fear. As for the frequency order of the SDS items in the wives of alcoholics, they were confusion, decreased libido, decreased appetite and psychomotor retardation. 4) As for the wife's attitude toward her husband, nagging and interfering attitude was commonest(46%) in the wives of alcoholics in contrast to the gentle and tender attitude(48%) in the wives of social drinkers. 5) 62% of wives of alcoholics were dissatisfied with their sexual life but the degree of dissatisfaction was low to 8% in the wives of social drinkers.

폴리에스테르 모르타르의 경화수축

최낙운,김완기,조영국,소양섭 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2

The setting shrinkage behavior in polyester mortars with two-phase shrinkage reducing agent(SRA) was observed at the ambient temperature. Polyester mortars were prepared with various styrene contents and two-phase shrinkage reducing agent(SRA) contents. The length change and exotherm temperature of polyester mortars were continuously monitored by a noncontact-type automatic length change measuring apparatus and a thermocouple embedded respectively. Low-shrinkage or non-shrinkage of polyester mortars should be accomplished by adjusting styrene content and SRA content.

생물학적 소양의 함양을 위한 BSCS 통합 권고안과 6, 7차 교육과정 비교

구수정,김영신,김병석,이성조,정완호 한국교원대학교 과학교육연구소 2000 청람과학교육연구논총 Vol.10 No.1

본 연구에서는 BSCS 위원회가 생물학적 소양의 함양을 위하여 제시한 중등 생물 교육과정 개발 지침과 우리 나라 제6차, 제7차 교육과정을 개념 제시 형태, 하위 개념들의 내용 일치도, 개념 수의 측면에서 비교 분석하였다. 연구 결과 우리 나라 교육과정의 내용 체계에서의 상의 수준으로서의 지식 영역과 하위수준으로서의 내용 요소 부분에 제시되어 있는 개념들이 포괄성의 차이 없이 단순히 개념 나열적으로 제시되어 있는 상태라서 개념 수준간 등급화가 충분하지 못한 것으로 나타났다. 그리고 우리 나라 생물 교육과정에는 생태계, 유전과 생식, 물질대사 부분에 너무 많은 개념들이 들어 있는 것으로 나타났는데 이로부터 BSCS가 학문중심 교육 과정기에 제시했던 많은 개념들에 대해서 현 시대 흐름에 비추어 학생들의 생물학적 소양의 함양을 위해 재조정하도록 권고하면서 제시한 6개의 통합 원리들을 편중되지 않게 고르게 포하하기 위해서는 우리 나라에서도 생물교육과정에 대한 재구성 노력이 필요한 것을 알 수 있었다. 한편 생물 Ⅰ보다 생물 Ⅱ에 생물학적 소양의 함양을 위한 필수 개념들이 더 많이 제시되어 있는 것으로 분석되었는데 이는 우리 나라 제7차 교육과정의 과학 10에서 과학적 소양이, 그리고 생물 Ⅰ에서 생물학에 대한 기초 소양이 강조되고 있고, 생물 Ⅱ에서는 생물학 관련 전공 과목 이수 준비를 강조하고 있는 과목별 성격과 목표에 부합되지 않는 것이며 따라서 우리나라 교육과정에서도 각 과목별 특성을 분명히 제시 및 반영하려는 노력이 필요함을 알 수 있었다. 이상과 같은 연구 결과로부터 현재 우리 나라 과학 및 생물 교육의 중요한 목적의 하나로 설정되어 있는 학생들의 생물학적 소양의 함양을 위해서 제7차 교육과정에 의한 생물 교과서의 교수 자료 개발 및 장차 제8차 교육과정 개발에 사용할 수 있는 실제적인 지침을 마련하기 위한 구체적인 논의가 있어야 함을 시사받았다. In this study, the concept presentation form, the content coherence of sub-dimensional concepts and the number of concepts of the 6th and the 7th Korean curriculum were analyzed comparing the guide to developing the secondary biology curricula to develop biological literacy with BSCS. According to the result, the discrimination between concept levels in the frame of contents of the Korean curricula is insufficient, because each of concepts presented in the knowledge domain as upper level and sub-dimensional concept elements as lower level are simply arrayed. Considering too much concepts of ecosystem, genetics, reproduction and metabolism, there should be an effort to reform the biological curriculum to include concepts evenly, not in the biased state, to reflect all the 6 unifying principles by BSCS for developing students' biological literacy. Finally there should be an effort to reflect the characteristics of each subjects concretely among Science 10, Biology Ⅰ and Biology Ⅱ in the 7th curriculum considering the result that essential concepts to develop biological literacy are presented more in some principles of Biology Ⅱ than Biology Ⅰ. Thinking the results of the present study, concrete discussions should be made to set up the standard reference about biological literacy and to present essential concepts for teaching and learning to develop it in the process of biology textbook development for meeting the 7th Korean curriculum and in the development of 8th Korean curriculum in advance.

상악골에 발생한 Monostotic 섬유성 이형성증의 1례

이승학,김경일,김완수,나한조 조선의대 1995 The Medical Journal of Chosun University Vol.20 No.2

4주간의 쥐뒷다리 고정이 Soleus근섬유 조성에 미친 영향

이선장,김완조,김문희 韓國體育大學校附屬 體育科學硏究所 1992 韓國體育大學校附屬 體育科學硏究所論文集 Vol.11 No.1

The purpose of this study was to examine the effect of immobilization on muscle fiber composition, mass, area and capillarization after 4 - wk of hindlimb suspension. Significant reductions in soleus mass, area and capillary density were occured after 4 wks of hindlimb suspension, Wheres type IIa fiber percentage was significantly increased in the experimental group. The results suggest that hindlimb unweighting induced soleus muscle atropy and these results also demonstrate that muscle fiber atropy not necessarily being associated with a loss in capillary supply.

MoSi_2기 복합재료의 소결온도에 따른 미끄럼마모 특성

이광영,박원조,허선철,김형진,박성호 경상대학교 해양산업연구소 2002 해양산업연구소보 Vol.15 No.-

Molybdenum disilicide(MoSi_2) is considered to be a promising high temperature material for turbojet anhypersonic engines in aerospace and various industrial applications, because of a high melting point(2030℃),adequate density(6.3g/cm^3) and an excellent oxidation resistance. Mosi2 powder was evaluated from the variation of fabricating such as preparation temperature 1250℃, 1350℃ and 1500℃ respectively. Abrasion tester used a pin-on-disk type and a Si3N4 ceramic ball which used as machine structural materials. The test condition apply to load of 8kgf at 7.5rpm for 6 hours and the effect of hardness is also discussed. As a result of the tests, the friction coefficient was decreased with sintered MoSi_2 of increasing temperature but the function coefficient did not vary much for all specimens at all temperatures.

아미노산 투여가 중장거리 운동선수의 최대 및 최대하운동시 젖산생성에 미치는 영향

이정수,윤탁영,김문희,이선장,김완조 韓國體育大學校附屬 體育科學硏究所 1992 韓國體育大學校附屬 體育科學硏究所論文集 Vol.11 No.1

The Purpose of the Study was to determine whether the glutamate ingestion prior to exercise would reduce the lactat formation and its clearance in exercising mscle tisue during Submaximal and maximal execise. Six elite distance rummers particapated in this study. The Subjects had a half dose of glutamale(15.6mg .Kg?? ??) at 45min and ingested rest dose at prior to exerise. The test Performed twice. One was Performed in the track and the other was in the Lab. Blood Smples were obtained from catheter which was placed in the antecubital vein (Lab test) and finger tip Samples (Feld test) Unaltered blood lactate was observed in both trials, but, tended to less lactate concentration with glutamate ingestion than that of without glutamate ingestion. The recovery rate of blood lactate was markely rapid with glutamate ingestion in the field test. Unchanged in heart rate was founded in both trials. It many Suggest that, the additional supplement st of glutamate can improve execise performance limiting lactate formation or induce its rapid clearance from the muscle fissue.

아미노산 투여가 운동중 싸이클선수의 젖산 및 심박수에 미치는 영향

이승국,유병렬,김문희,김완조,이선장 韓國體育大學校附屬 體育科學硏究所 1992 韓國體育大學校附屬 體育科學硏究所論文集 Vol.11 No.1

The purpose of the study was to determine whether a 15.6mg.Kg ??' does of glutamate given one hour prior to incremental exercise test would reduce the lactate formation. Five well trained cyclists served as subjects in this experiment which included a placebo and glutamate trial. The subjects initially work on treadmill 200m/min for 3 minutes and here increased the workload by 20m/min every 3minutes until exhaustion. Blood lactate were collected from finger-tip. Subjects in the glutamate trial showed significantly lower lactate formation during exercise then they did in the placebo trial. In both groups no significant difference was found on heart rate. During the recovery lactate and heart, rate were unaltered in either the glutamate or placebo trials. In summary, glutamate ingestion may reduce lactate formation resultly improvement of performance.