당뇨병환자에서 뇨증 Fibronectin농도의 증가에 관한 연구

한승범,조준승,손건영,서성문,박근용,조성래,박규영,박정모,이인규,여준기 啓明大學校 醫科大學 1994 계명의대학술지 Vol.13 No.4

Plasma fibronectin is an α₂-glyoprotein, which is produced by vascular endothelial cells. Raised level of plasma fibronectin has been observed in diabetic patients particularly in the presence of microvascular complications. However, no available data exist about urine level of this glycoprotein in diabetic patients. We measured urine fibronectin level by ELISA methods in 54 diabetic patients who have microvascular comlications or not. The following results were obtained. 1) Urine fibronectin level(㎍/g creatinine) in diabetic group(1740.0±678.0) is increased compaired with those in normal control group(471.0±59.0). but this results were not significantly different among two groups(P>0.05). 2) Urine fibronectin level(㎍/g creatinine) was significantly increased in patients with nephropathy (6188.0±3144.0) compared with those in normal control group(471.0±59.0) and patients without nephropathy(645.0±251.0)(P<0.001). 3) There were a significant correlation between BUN, creatinine, creatinine clearance, 24hr urine total protein and urine fibronectin level in diabetic patients. Our data suggest that urine fibronectin excretion level might be used as a sensitive guide for diabectic nephropathy.

CT performance phantom을 이용한 cone beam형 전산화단층영상의 특성

한충완,김규태,최용석,황의환 대한구강악안면방사선학회 2007 Imaging Science in Dentistry Vol.37 No.3

Purpose : To evaluate the characteristics of (widely used) cone beam computed tomography (CBCT) images. Materials and Methods : Images were obtained with CT performance phantoms (The American Association of Physicists in Medicine; AAPM). CT phantom as the destination by using PSR 9000N™ dental CT system (Asahi Roentgen Ind. Co., Ltd., Japan) and i-CAT CBCT (Imaging Science International Inc., USA) that have different kinds of detectors and field of view, and compared these images with the CT number for linear attenuation, contrast resolution, and spatial resolution. Results : CT number of both PSR 9000N™ dental CT system and i-CAT CBCT did not conform to the base value of CT performance phantom. The contrast of i-CAT CBCT is higher than that of PSR 9000N™ dental CT system. Both contrasts were increased according to thickness of cross section. Spatial resolution and shapes of reappearance was possible up to 0.6 mm in PSR 9000N™ dental CT system and up to 1.0 mm in i-CAT CBCT. Low contrast resolution in region of low contrast sensitivity revealed low level at PSR 9000N™ dental CT system and i-CAT CBCT. Conclusion : CBCT images revealed higher spatial resolution, however, contrast resolution in region of low contrast sensitivity was the inferiority of image characteristics.

고성능AE감수제의 종류 및 첨가율에 따른 고유동콘크리트의 각종 유동특성 및 공학적 특성에 관한 실험적 연구

김규용,김무한 忠南大學校 産業技術硏究所 1996 산업기술연구논문집 Vol.11 No.2

It is now increasingly recognized that the fluid properties of superplasticized high flowing concrete can be affected by numerous parameters which characterize either the cement, the mineral or chemical admixture, the mix proportion. Particularly performance of superplasticizers used to enhance the workability and obviously plays a key role in the rheology of fresh and engineering properties of hardened concrete. In this experiment, it is aimed to investigate and compare the each fluidity and engineering properties of high flowing concrete by performance in each 3 kinds and addition rate of superplasticizers. And there is to aim the considering about fluidity and viscocity, hardened properties of hig flowing concrete.

분광광도법과 PAN을 이용한 미량 망간(Ⅱ)의 분석에 관한 연구

함용규,한현택,정창웅 순천향대학교 기초과학연구소 1999 순천향자연과학연구 논문집 Vol.5 No.2

A selective and highly sensitive spectrophotometric method has been investigated for the determination of trace manganese(Ⅱ) with 0.1% PAN in 0.001N-HNO₃and 10% potassium sodium tartrate solution. Mn(Ⅱ)-PAN complex was extracted into chloroform and this complex has maximum absorbance at 560㎚. Beer's law applied in the range of 20 ㎍ of Mn(Ⅱ) and the molar absorptivity is 4.6 × 10⁴L/㏖·㎝.

시멘트 및 고성능AE감수제가 고유동콘크리트의 유동특성에 미치는 효과에 관한 실험적 연구

박선규,반성수,우영제,김규용,김무한 忠南大學校 産業技術硏究所 1998 산업기술연구논문집 Vol.13 No.1

The fluidity of high flowing concrete can be affected by numerous parameters which characterize either the cement or the admixture. The reactivity of a cement as determined by its chemical compositions (especially its C₃A content), its fineness and its content in sulfates and alkalies obviously plays a key role in rheology of high flowing concrete in fresh state. Specific properties of high range water reducing AE agent used to enhance the workability of high flowing concrete also exert important influence. The purpose of this experimental study is to investigate and analyze the effect of cement and high range water reducing AE agent in fluidity, setting, compressive strength of high flowing concrete. As a result, we found that fluidity of high flowing concrete is affected greatly by kind of cement and high range water reducing AE agent, also, there is harmonic character between high belite cement and polycarbonic acid high range water reducing AE agent.

기술적 문제해결력 평가틀 개발

이한규,이용환 한국농업교육학회 2006 농업교육과 인적자원개발 Vol.38 No.4

이 연구의 목적은 기술적 문제해결력을 평가하기 위한 평가틀을 개발하고, 평가틀의 하위 평가영역에 대한 상대적 중요도를 구명하는 데 있다. 이러한 연구의 목적을 달성하기 위하여 기술적 문제해결력 평가틀의 개발은 ‘구안 단계’, ‘타당화 단계’, 그리고 ‘분석 단계’의 세 가지 단계를 거쳐 진행되었다. 먼저 기술적 문제해결력 평가틀의 구안 단계에서는 기술적 문제해결력의 개념 정의와 함께 기술적 문제해결력의 개념 구조를 설정하였다. 이 연구에서는 기술적 문제해결력을 기술적 문제공간의 특성에 근거하여 기술적 지식체계인 기술의 내용 토대 위에서 다루어야 할 기술적 문제 상황을 문제해결 과정과 절차에 의하여 해결해 나갈 때 계발되는 일련의 능력으로 정의하였다. 그리고 기술적 문제해결력의 개념적 구조를 기술의 내용체계, 기술적 문제상황, 그리고 기술적 문제해결과정으로 설정하였다. 이러한 개념적 구조에 근거하여 기술적 문제해결력 평가틀의 차원은 내용(재료, 구조, 동력, 제어, 생명), 상황(발명, 설계, 고장수리, 절차), 그리고 과정(문제의 이해, 계획, 실행, 결과)의 세 가지로 설정하였다. 기술적 문제해결력 평가틀의 초안에 대한 타당화를 위해 델파이 기법을 적용하였으며, 교수 및 연구원, 교사로 구성된 전문가 패널을 대상으로 3회에 걸친 델파이 조사를 통해 최종적으로 3개의 평가차원, 13개의 평가영역, 그리고 과정 평가차원의 4개 평가영역 아래에 10개의 평가항목과 28의 평가지표로 구성된 기술적 문제해결력 평가틀을 개발하였다. 기술적 문제해결력 평가틀의 평가영역 중 상황 평가차원의 평가영역에 대한 상대적 중요도는 발명, 설계, 절차, 고장수리의 순으로 나타났으며, 내용 평가차원의 평가영역에 대한 상대적 중요도는 제조, 통신, 수송, 건설, 생명의 순으로 나타났다. 그리고 과정 평가차원의 평가영역에 대한 상대적 중요도는 문제인식, 실행, 탐색, 그리고 평가의 순으로 나타났다. This study was purported to develop an assessment framework for technological problem solving capability, and to investigate relative weight about subordinate assessment domains of the assessment framework. The process of assessment framework development in this study was broken into three phases: draft development, validation, and analysis. the first step in the draft phase was to establish a concept definition and a conceptual structure of technological problem solving capability. In this study, technological problem solving capability was defined as capability used for solving problem in technological problem context, and a conceptual structure of technological problem solving capability was established by content system of technology, technological problem context, and technological problem solving process. Based on this conceptual structure, the assessment framework of technological problem solving capability was comprised of three dimensions: content(manufacturing, communication, transportation, construction and life), context(invention, design, procedure, and troubleshooting), and process(problem's awareness, inquiry, execution, and assessment). The finally confirmed assessment framework consisted of 3 assessment dimensions and 13 assessment domains. Process assessment dimension consisted of 4 assessment domains, 10 assessment specifications, and 28 assessment indicators. As a result of estimating relative weight about assessment domains, the weight appreciated by the whole panel was ordered as follows: (1) 'invention', 'design', 'procedure', and 'troubleshooting' in the assessment domains of context assessment dimension. (2) 'manufacturing', 'communication', 'transportation', 'construction' and 'life' in the assessment domains of content assessment dimension. (3) 'problem's awareness', 'execution', 'inquiry', and 'assessment' in the assessment domains of process assessment dimension.

역설계 시스템에 의한 자동차용 프레스 제품의 검사

김수용,한민식,김태호,조규재,전언찬 朝鮮大學校 機械技術硏究所 2005 機械技術硏究 Vol.8 No.2

This study is an inspection of press forming product and mould using reverse engineering system. The inspection process on production field involves a lot of errors because of the hand-work so we focussed on improving the measured precision through performing the effective inspection using 3D non-contact scanner. By so doing that. we improved the precision of press forming product by analyzing the cause following the inspection result. Through the inspection, we applied it to the reverse engineering and we could improve the inspection process.

慶北大學校 敎科課程의 改善에 關한 硏究 : The Case of Kyungpook national University

金容圭,李宇一,朴斗元,李慶燮,韓宗烈 慶北大學校 師範大學 1976 敎育硏究誌 Vol.18 No.-

This is the research paper on the curriculum improvement of Kyungpook National University. The curriculum of a college or university is the organized contents of all courses in order to accomplish the educational goals of the higher institution in an effective way. Needless to say, when curriculum is developed, the needs of the society and of the nation where the university is located, should be sufficiently reflected on its development. As an effort toward improving educatioal programs of higher institutions, the Ministry of Education has been encouraging each college or university to engage in the "Pilot Schol Project", a national experimental academic refrom project which was started in 1973 under the sponsorship of the Ministry of Education. In compliance with this policy, Kyungpook National Uuiversity has been not only making its every effort in improving the curriculum by each college within the campus since 1973, but also, continuing its research on the curriculum development in various areas. The research team has been attempted to systematize the direction of the curriculum improvement to meet the needs of the present and of the modern soceity by indicating the particelar characteristics of each college curriculum. This research paper has been focused on testing the validity of the contents of the revised curriculum which covers such areas as the minimum credit hours required for graduation, division making, and sequence of each division, etc.. As a research tool for the purpose of this study, comparative method has been utilized in order to verify the validity of the revised curriculum by means of comparing the above listed items with the current our university curriculum and those of the advanced countries.

Image Analyzer를 이용한 고추장 숙성 예측에 관한 연구

배철섭,한규홍,김병용 경희대학교 생명자원과학연구원 2000 硏究論文集 Vol.21 No.-

고추장을 각 저장온도에서 숙성하였을 때 환원당과 아미노태 질소는 증가하였고 점도, 색도, 전분 입자 수는 감소하였다. 높은 저장온도에서 모든 품질인자들의 증가와 감소가 빠르게 진행되었으며, 점도의 경우 저장기간이 끝난 후 온도에 따른 차이를 보이지 않았다. 점도, 색도, 전분 입자 수에 대한 반응 속도는 1차 반응을 나타내었으며, k값은 20℃보다는 35℃에서 높게 나타났다. 이러한 결과는 20℃보다는 35℃에서 숙성이 빠르게 일어남을 보여주는 결과이다. 고추장의 숙성에 있어서 단기간에 숙성을 필요로 할 경우 고온에서 숙성하는 것이 좋으나, 장기적으로 숙성을 원할 경우에는 상온에서 숙성하는 것이 좋을 것이라고 생각된다. 영상분석을 이용한 입자수 측정결과와 점도, 색도 측정간의 결정계수(r^2)가 상당히 높은 값으로 나타나 영상분석을 통한 저장 수명 예측을 가능하게 하였다. The fermentation degree of kochujang during storage at different temperature was predicted by viscosity, color and particle numbers determined by an image analyzer. Reducing sugars and ammo-nitrogen contents of kochujang were increased during storage, whereas color (lightness, redness, and yellowness) of kochujang was decreased at all storage temperatures. The difference in viscosity at each storage temperature was less as storage time was increased. Above parameters at various storage times followed the first oder reaction pattern and the rate constant (k) was mostly dependent on storage temperature. The relationship of particle number and storage time of the Kochujang was applied to a simple regression model, to be able to predict fermentation time.

글쓰기 교육과 한문 교육의 앞으로의 방향

손병국,오정란,조규일,최기용,한지현 광운대학교 인문사회과학연구소 2000 인문사회과학논문집 Vol.29 No.-