상악 4전치 후방 견인시 치근 주위 응력 분포에 대한 광탄성법적 분석 : High Pull J-hook Headgear의 효과 The Effects of the High Pull J-hook Headgear

구본준,성재현 慶北大學校 齒科大學 1990 慶北齒大論文集 Vol.8 No.1

The purpose of this study was to investigate the effects of the High Pull J-hook Headgear in retraction the maxillary 4 incisors. The maxillary part of a dry skull that had Angle's Class Ⅱ malocclusion and axes of the central incisors were 60 degrees to the occlusal plane was duplicated with epoxy resin. In this epoxy resin model, the maxillary 4 incisors were retracted by the 1㎜ activated vertical closing loop, High Pull J-hook Headgear with a directional force of 34 degrees to the occlusal plane and 600g in total force, and both of them. The obtained stress distributions around the roots were analysed by three dimensional photoelastic method. The results were as follows; 1. When the maxillary 4 incisors were retracted by the 1㎜ activated vertical closing loop, simple lingual tipping movement patterns were shown. 2. When the maxillary 4 incisors were retracted by the High Pull J-hook Headgear with a directional force of 34 degrees to the occlusal plane and 600g in total force, intrusive bodily movement patterns were shown. 3. When the maxillary 4 incisors were retracted by the 1㎜ activated vertical closing loop and the High Pull J-hook headgear with a directional force of 34 degrees to the occlusal plane and 600g in total force, simple lingual tipping movement patterns and intrusive bodily movement patterns were shown in the same time. J. Kyungpook. Nat. Univ. Sch. Dent. Vol.8, No.1, 91∼103, 1991.

한강수계의 주요 오염원별 부하량 비교분석

구본수,강성환,임재명 江原大學校 産業技術硏究所 1998 産業技術硏究 Vol.18 No.-

The purposes of this research were constructed the database, based on graphing the present water pollution in Han-river due to livestock wastewater(LSW). The LSW was below 1% in respect to quantity but about 7% in respect to pollutions loading in overall Han-river. The ratio of untreated LSW is 18% to 28%, which was higher compared to the municipal and industrial wastewater. In other words, LSW was about 0.05 times of municipal wastewater in respects to quantity but 2 times in respect to the ratio of untreated wastewater. So, it was necessary for treating LSW. The pollutions loading due to livestock wastewater of the South Han-river. North Han-river and main stream were 19.7%, 19.4% and 4.0%, respectively. This was about 7% in overall Han-river. We separated the Han-river into upper, mid and down stream. As a result, we found that the livestock wastewater is the main water pollution source of upper Han-river.

직렬 공진형 컨버터의 슬라이딩모드 전압제어

具本鎬,任成雲 慶一大學校 1992 論文集 Vol.8 No.1

This paper presents a method to control the output voltage of QSRC using sliding mode control theory. State equation is derived for the system that introduced control theory is applied to equivalent circuit of QSRC. The parameter of control rule selected in order to minimize the effect of load variation. By proposed control method, it was shown that output voltage of QSRC was controlled continuously. Robustness of proposed controller was pointed out via computer simulation and experiment.

경량기포콘크리트(ALC)의 기공형상변화에 미치는 암면의 영향

구본급,손대성 한밭대학교 산업과학기술연구소 1994 논문집 Vol.2 No.-

As the purpose of making of ceiling materials, the effect of rock wool on pore shape transition of autoclaved light weight concrete(ALC) was investigated with rock wool contents. As increasing the rock wool contents, the compressive strength and specific gravity decreased, and the pore size of ALC increased and pore shape transferred from a circle to an ellipse.

주의력결핍 과잉행동장애 아동에 있어서 연속수행검사의 진단적 유용성

구본훈,박형배,이희정,송창진,김진성,이광헌 大韓神經精神醫學會 1999 신경정신의학 Vol.38 No.6

서 론: 본 연구는 주의력결핍 과잉행동장애(이하 ADHD) 아동과 정상대조군의 연속수행검사(이하CPT) 결과 양상을 비교하여 CPT의 진단적 유용성을 알아보고자 하였다. 그리고, ADHD 아동의 연령과 성별, 지능, 그리고, 장애의 유형 등과 같은 변수에 따른 CPT의 결과양상을 비교하여, CPT가 ADHD의 어떤 특성을 잘 반영해주는가를 알아보고자 하였다. 대상 및 방법: DSM-Ⅳ의 진단기준에 의하여 진단이 내려진 ADHD 실험군 68명과 정상대조군 30명을 선정하였으며, 두 군간의 연령과 성별을 통제하였다. 실험군과 정상대조군 모두 환아의 부모가 ADHD 평가척도(ADDES-HV)를 작성하였으며, 환아에게 직접 CPT를 실시하였고 지적 능력을 평가하기 위해 K-ABC를 시행하였다. 결 과: 실험군과 정상대조군에서의 CPT 결과 양상을 비교하였을 때, 실험군과 정상대조군 사이에 민감도가 유의한 차이를 나타내었고, 반응 기준도 유의한 차이를 나타내었다(p<0.05). ADHD 아동을 대상으로 연령과 지능의 변화에 따른 CPT의 결과 양상을 비교하였을 때, 연령과 지능이 증가함에 따라 CPT각각의 결과들도 대체로 수행력이 호전되는 경향을 나타내었다. 주의력결핍 과잉행동 장애의 유형을 과잉행동을 동반한 군과 과잉행동을 동반하지 않은 군으로 나누어 비교분석을 한 결과, CPT 각각의 결과에서 유의한 차이는 나타나지 않았다. CPT 결과 양상에 있어서 남녀간 차이점을 비교하였을 때, 오경보오류와 정반응시간의 표준편차, 표준편차의 다양성, 그리고, 민감도가 유의한 차이를 나타내었다(p<0.05). CPT 각각의 8가지 결과 변수들에 대해 판별분석을 실시한 결과, 각각의 결과 변수들에 있어서 진단에 대한 전체 판별력이 모두 50%이상을 나타내었다. 그 중, 정반응시간의 표준편차와 표준편차의 다양성, 그리고, 민감도는 진단에 대한 전체 판별력이 모두 60%이상을 나타내었다. 결론 및 고찰: 이러한 결과들은 CPT가 ADHD의 진단에 있어서 어느 정도의 유용성을 가지고 있다는 점을 보여준다 하겠다. 즉, ADHD에 있어서 CPT는 비교적 선별검사와 같은 목적으로는 유용할 것으로 생각되며, 이는 또한 CPT가 장애의 진단에 있어서 보조적인 검사도구임을 나타낸다 하겠다. Objectives: The purpose of this study was to examine to diagnostic availability of CPT in children with ADHD, and what factors are affected to CPT results in the diagnosis of ADHD. Method: CPT, ADHD scales(ADDES-HV), K-ABC were administered to 68 ADHD patients and 30 normal elementary school students as the control group. Also, ages and sex are controlled between two groups. Results: In the differences of the results of CPT between ADHD patients and normal subjects, attentiveness and risk taking are significantly different(p<0.05). In the differences of the results of CPT between ages in ADHD patients, usually as more aged children are better performances in CPT. Also, in the differences of the results of CPT between intelligence in ADHD patients, usually as higher intelligent children are better performances in CPT. There are no differences of the results of CPT between types of ADHD in ADHD patients. In the differences of the results of CPT between sex in ADHD patients, commission error, hit reaction time standard error, variability of standard error, and attentiveness are significantly different between male and female patients(p<0.05). The correlations between ADHD scales and the results of CPT show that inattention subscale is significantly related to hit, omission error, hit reaction time standard error, and variability of standard error. In the discriminant ability between ADHD patients and normal children by the results of CPT, accuracy rates are more than 50% in all results of CPT. Especially, the accuracy rate of hit reaction time standard error, and the accuracy rate of variability of standard error, and also, the accuracy rate attentiveness are more than 60%. Conclusion: In this point of view, this study suggest that CPT is relatively valuable method in the diagnosis of ADHD. For instances, CPT is more likely to screen the ADHD from normal children, or to use as assisted method of diagnosis of ADHD in clinical settings.

Trichoclerma sp가 生産하는 Cellulase에 關한 硏究

具本聖,金敎昌,南相烈 충북대학교 농업과학기술연구소 1987 農業科學硏究 Vol.5 No.1

This experiment was conducted to investigate the composition of the medium for the cellulase production by Trichoclerma sp. and the characteristics of the cellulase. The results obtained were as follows; 1.The optimum composition of the medium for cellulase production consists of 1% substrate, 0.5% KH2PO4, 0.3% (NH2)2CO, 0.3% NaNO3 0.05% MaSO4·7H2O, 0.01% Fe SO4·7H2O, respectively. 2.The optimum pH of cellulase was 5.0 and pH range of its stability was 4-6. 3.The optimum temperature of cellulase was 50℃ and heat stability was below 50℃. 4.In the concentration of substrate for enzyme, the activities of cellulase were respectively increased to the concentration of 1% substrate, but above the concentration of 3% stbstrate the activities of cellulase were slowly increased. 5.In general the activities of cellulase were proportionally increased by adding the amount of enzyme solution up to 1 ml, but those of cellulase were slowly increased up to 3ml. 6.The cellulase was inhibited by Hg.++

磁性浦捉劑 δ-FeOOH의 製造와 이를 利用한 重金屬이온의 處理

오상오,박유철,구본권 慶北大學校 1980 論文集 Vol.30 No.-

자성포착제 δ-FeOOH는 황산철과 수산화나트륨 수용액을 반응시켜 얻은 수산화철 용액에 오존을 급격히 통하게 하여 합성했다. 실온에서 산화시간을 일정하게 하고 황산철에 대한 수산화나트륨의 농도 변화에 따른 δ-FeOOH의 생성에 대한 최적조건을 조사했다. 이러한 조건하에서 만든 산화철로써 폐수중의 중금속이온 즉 Cd^2+, Cr^6+, As^3+, Pb^2+, Hg^2+를 처리하고 그 결과를 보고한다. Magnetic seeding material, δ-FeOOH was prepared by passing through ozone to Fe(OH)_2, which is made by reaction the aqueous solution of the ferrous sulfate with the sodium hydroxide. In order to find the condition of formation of δ-FeOOH at room temperature, the variation of concentration of sodium hydroxide against ferrous sulfate was considered at constant oxidation time. Under these conditions, the degree of treatment for heavy metal ions, such as Cd^2+, Cr^6+, As^3+, Pb^2+, and Hg^2+ in waste water were discussed.

인슐린 비의존성 당뇨병에 동반된 심상성 천포창 1 례

이상준,박진용,임태형,윤영호,권순대,남창욱,허규찬,박근용,구본식,김상표,장종억 啓明大學校 醫科大學 1997 계명의대학술지 Vol.16 No.3

저자들은 인슐린 비의존형 당뇨병 환자에서 통증성 구강내 미란 및 전신성 수포성 미란을 동반한 심상성 천포창 1예를 경험하였기에 문헌고찰과 함께 보고하는 바이다. Various skin conditions such as diabetic dermopathy, necrobiosis lipoidica diabeticorum, bullosis diabeticorum, granuloma annulare occur frequently in diabetes, although common lesions may be associated by chance. Pemphigus vulgaris(PV) is a blistering skin disease seen predominantly in elderly patients. This disorder is characterized by the loss of cohesion between epidermal cells with the resultant formation of intraepidermal blisters. These blisters rupture easily, leaving denuded areases that may crust and enlarge peripherally. In half or more of patients, lesions begin in the mouth: approximately 90% of patients have oromucosal involvement at some time during the course of their disease. But the relationship of this disorder with diabetes is not clear. We experienced a case of pemphigus vulgaris associated with NIDDM in 67 years old woman who was admitted due to painful oral ulcer and control of blood glucose, so we present this case with a review of literatures.

학기제 현장실습제도의 교육적 가치 분석

김상길,조덕호,이상호,구본급 한밭대학교 생산융합기술연구소 2004 생산기반기술연구소 논문집 Vol.4 No.1

The main purpose of this study forcuses on the analysis of the educational value of the semester-based practicum system by comparing from the 1999 to the 2001 school years. This study is based on questionnaires from the student, faculty members and the industrial personnel who were participated to the practicum. The question is related with the educational value of the program, such as "I think that classroom learning is enriched through the program", "I think that the program is helpful to decide my future job", and so on. The results of the 2001 year program have shown much improvement compared to those of the 1999 and 2000 school years. Especially, many of the negative views students showed in 1999 have turned positive in 2001.

2000학년도 학기제 현장실습제도의 효과 분석 및 1999학년도의 분석결과와의 비교 연구 : 현장실습의 교육적인 가치 및 운영적인 측면을 중심으로 based on the educational value and the operational aspect

金相吉,趙德鎬,李相鎬,具本及 大田産業大學校 2001 한밭대학교 논문집 Vol.18 No.-

The main purpose of this study focuses on the analysis of the effectiveness of the sandwich education system by comparing the educational value and operational efficiency between the 1999 and 2000 school years. This study is based on questionnaires from 67 students of the Division of Advanced Materials Engineering at Han-Bat National University, 13 major field professors who guided the students, and 18 industrial personnel who trained the students during the program. Students participated in the field experience from the beginning of September, 2000 to the middle of December in the same year. They were surveyed in the beginning of 2001. The results of the analysis are compared to the ones which were surveyed in the end of 1999 school year. The first part of the question is related to educational values of the program and the second part of the question consists of the operational aspect of the program. The results of the 2000 years program has much improved compared to that of the 1999school year. Many of the negative views students showed in 1999 have turned positive ones in 2000.