안모의 수직적 양태에 따른 골격 및 치조골의 위치 관계에 관한 연구

오중식,국윤아,김상철 대한치과교정학회 1999 대한치과교정학회지 Vol.29 No.3

교정 증례의 분석 예후 추정은 두개골의 수평 및 수직적인 관계가 동시에 고려되는 입체적 관점에서 평가되어야 한다. 따라서 본 연구에서는 성장이 완료된 성인 남녀 각 100명을 추출하여 두부 방사선 사진을 채득한 후 하안면 고경과 상안면 고경의 비율로 안모의 수직적 수직적 형태를 구분하여 군을 설정하였으며 이들 군간의 골격 및 치조골의 크기와 위치 관계를 비교하고 상호 관련성을 조사하여 다음과 같은 결과를 얻었다. 1. 치조고경, 안면 고경, lower gonial angle, 그리고 FMA 항목에서 하안면 고경이 큰 군의 것이 작은 군에 비하여 유의하게 크게 나타났다. 2. 치조고경, 안면고경, 하악지 고경, 그리고 Jarabak ratio 항목에서 남서이 여성에 비하여 유의하게 크게 나타났다. 3. 치성 및 골격성의 수직계측항목과 UAFH/LAFH의 상관관계 조사에서 치조고경,안면고경, lower gonial angle, FMA 그리고 Bjok's Sum 항목이 UAFH/LAFH와 유의한 상관관계를 보였다. The purpose of this study was to investigate the variations of the skeletal and dentoalveolar dimensions in relation to vertical facial patterns. Lateral cephalogram of 200 cases (100 cases of male and 100 cases of female, average age of which was 23.2 years) were traced and some measurements of skeletal and dentoalveolar dimensions were measured. The ratio of UAFH/LAFH was employed to classify the samples into groups of excess and short lower anterior facial height. And the comparison between two groups were taken statistacally. The following results were obtained. 1. The dentoalveolar height, lower anterior facial height, lower gonial angle, and FMA in the excess-lower-anterior-facial-height group were significantly larger than those in short-lower-anterior-facial-height group. 2. The dentoalveolar height, ramus height, and Jarabak ratio in the male subjects were significantly larger than those in the female subjects. 3. The UAFH/LAFH ratio showed a significant correlation to upper, lower facial height, AUDH, PUDH, ALDH, PLDH, Lower gonial angle, FMA, and Bjork's Sum.

대장균 세포내 칼모듈린 돌연변이체 고발현을 위한 클로닝 및 Chemiluminescence 검출법에 의한 발현분석

오석홍,박윤식,양문식,최동성 우석대학교 자연과학연구소 1996 自然科學硏究論文集 Vol.1 No.-

To obtain a large amount of VU-4 calmodulin (115, Lys to Ile). VU-4 calmodulin gene with Ptac promoter (680 bp) was cloned into a plasmid, pUC18. Newly cloned pUC18/VU-4 was transferred into E. coli UT481. The plasmid isolated from cell extracts of the transformed E. coli was analyzed by restriction mapping and yielded the expected restriction endonuclease map with BamHI and EcoRI. Calmodulin was detected by Western blot analysis using chemiluminescence protocol and the estimated expression level was 60 pmole calmodulin/mg protein. Calmodulin was purified from the E. coli cell extracts by Ca^(2+)-dependent chromatography on a phenyl-Sepharose column. The purified calmodulin was identified as a mutant VU-4 calmodulin by SDS-PAGE and methyltransferase substrate test.

태권도 수련 프로그램 적용에 따른 정신력 효과

김응식,윤오남,선석령,구희성 朝鮮大學校 스포츠科學硏究所 2003 스포츠科學硏究 Vol.14 No.-

This study had a purpose to define an effect of mental strength according to the application of Taekwondo Training Programs. In order to achieve this study objective, the Delphi Technique Analysis and the Quantitative Research were carried out. For this purpose, firstly, experts' opinions about the programs which were practiced in the Taekwondo gym was analyzed. Secondly, the background variable and training level, the training programs, and the difference of Taekwondo mental strength were analyzed. And thirdly, the relations between the Taekwondo training level, the training program, and the Taekwondo mental strength, etc. were analyzed. The analysis of Taekwondo training programs by the DeIphi Technique was performed by means of the 3rd analysis with 30 experts. And as for the Quantitative Research, the study subjects were targeted for the total 265 pupils composed of 224 boys and 41 girls who were selected by the Group Random Sampling. This study took the primary school students in 4-6 years as the population who were training Taekwondo in the gym which was located in Gwangju. The measurement instrument for research survey consisted of five (5) question items for background variables, three (3) question items for training level, three (3) question items for training programs, and twenty-five (25) question items for Taekwondo mental strength, that is, which totaled thirty-six (36) question items in all. As for the relationship model settings between the related variables, gender, school year, income level, academic records, training motive variables were established. As for the independent variables, the medium variables for Taekwondo training level were set up by the training programs. And, the Taekwondo mental strength variables were established for the dependent variables. The data which were collected by using questionnaires were dealt with according to the research objectives. As for the statistical techniques for analysing the treated data, skill statistics, unitary variance analysis, multiple regression analysis were employed. As for the relation of mental strength according to the application of Taekwondo training programs based on the method and procedure of this study, the following results were obtained in accordance with the basis of the Delphi Technique Analysis and result of the Quantitative Research. First, in the program analysis through the Delphi Technique, it was investigated that the following factors were achieved. In the body-centered programs, factors such as curiosity, creative power, interest, etc. were achieved. In the mind-centered programs, factors such as social nature, character, etiquette. sense of cooperation, creative power, and interest etc. were achieved. In the play-centered programs, factors such as meditation, personal relations, creative power, self-esteem, and reliance etc. were achieved. Second, in the differences of Taekwondo programs on the basis of the background variables, school year and income level showed the statistically significant differences in the body-centered and the mind-centered programs among the types of Taekwondo training programs. And the statistically significant difference was shown about the income level in the play-centered programs. This result showed the fact that, in training Taekwondo, pupils showed differences for adapting themselves to the contents of body-, mind-, and play-centered programs according to the contents of programs based on school year and income level which were parts of the background variables. Third, in the relations between the Taekwondo training level and the programs, for the great influence which they had on the body-centered programs about the period, frequency, and the intensity. pupils could adapt themselves well to the training as the period became longer in the body-centered programs. They could also adapt themselves well to the high-intensity training when they were not absent and trained more frequently. As for the period, about the thing which it influenced the mind-centered programs, as they were trained longer in the mind-centered programs, the training period became longer. Also, as for the period and frequency. it was considered that what influenced the play-centered programs was the fact that, as pupils were trained longer, the training period became longer in the play-centered programs. And they seemed to feel more pleasure and interest as the training period became longer and when they were not absent, and when they were trained more frequently. Fourth in the relation between the Taekwondo training level and the mental strength, for the period and the frequency which belongs to the training level, the thing which had significant impact on the sub-factors of the mental strength such as patience, courage, and etiquette was the fact that patience, courage and etiquette which were the sub-factors of mental strength were improved as the Taekwondo training period was longer, and they were trained more frequently. Fifth, in the relation between the type of Taekwondo program and the mental strength, patience, courage, and etiquette was highly improved in the body-centered programs. And courage was highly improved in the mind-centered programs. Also, what had significant impact on patience, courage and etiquette was the body of the Taekwondo program type in the play-centered programs. Likewise, for the mind- and play-centered programs, the mental strength such as patience, courage and etiquette was highly improved as they were trained more frequently.

박하세포의 현탁배양에 대한 Fungal Elicitor의 영향

강윤모,오재현,정인식 慶熙大學校 大學院 1993 高凰論集 Vol.12 No.-

The effect of fungal effector on suspension culture of M. piperita cells was investigated using shake flasks. About two fold increase in oil production was observed in response to the treatment of fungal elicitor prepared from Rhodotorura rubra. Also, maximum accumulation of oil in M. piperita cells occurred at 48 hrs of incubation and 14 day-old peppermint cells were best in peppermint oil production.

두가지 혈류 유발방법에 의한 새로운 심폐소생술(이중 혈류 유발 심폐소생술)장치의 개발

황성오,김현,조준휘,오범진,임종천,최경훈,윤정한,이승환,김영식,이강현,이윤선 大韓應急醫學會 1999 대한응급의학회지 Vol.10 No.2

Background: There have been many efforts to augment blood flow during cardiopulmonary resuscitation. These efforts have focused on maximizing the effect of cardiac pump or thoracic pump alone. However, considering that the heart is the biggest blood reservoir and increase of intrathoracic pressure can generate blood flow, simultaneous exploitation of both mechanisms may have synergistic effect. We hypothesized that simultaneous chest constriction in addition to sternal compression by standard CPR may have additive hemodynamic effects by preventing deformation of the chest and increase of intrathoracic pressure. Methods and results: we built a new mechanical device to perform compression and thoracic constriction simultaneously. The device consists of two main elements. Piston in the center is to depress the sternum. Strap is to constrict the thorax circumferentially. Strap is attached to both sides of the piston. When the piston is pushed down, it depresses the sternum and pulls on the thoracic strap. To determine strap width to produce optimal hemodynamic effect, we measured hemodynamic parameters with variable widths of strap in two dogs after induction of ventricular fibrillation. Result of the experiment showed that 10cm wide strap was determined to be most effective. We also determined optimal depth of compression to produce maximal hemodynamic effect with animal experiments using two dogs. Animal experiments showed that the highest aortic pressure could be generated when the stemum was depressed to 5 cm. Cardiopulmonary resusciation using a new device could generate higher systolic aortic pressure, coronary perfusion pressure and end-tidal carbon dioxide tension in comparison with standard cardiopulmonary resuscitation in a pilot animal study using two dogs. Conclusion: New cardiopulmonary resuscitation method using a mechanical device designed by us could perform sternal compression and simultaneous thoracic constriction, and generate better hemodynamic effects than standard cardiopulmonary resuscitation in pilot animal experiments.

4,5세 아동의 읽기발달에 관한 연구

권오식,윤혜경 인제대학교 아동ㆍ가족복지연구소 1996 아동ㆍ가족복지연구 Vol.1 No.-

본 연구의 목적은 아동의 한글터득과정을 밝혀보고자 하는 것이다. 읽기의 획득을 문자와 소리 사이의 대응관계를 터득하는 것이라 한다면, 음소문자이면서 음절문자라는 특성을 띄고 있는 한글은 단어읽기(음성단어-시각단어 대응), 글자읽기(음절-글자 대응) 그리고 자소읽기(음소-자소 대응)가 가능하다. 실험 1과 2에서는 자소읽기 이전의 아동들의 글자읽기에 관하여 알아보고자 하였다. 실험 1에서는 4세 아동을 대상으로 글자읽기에 요구되는 '한 글자는 한 음절과 대응된다'는 지식이 있는지 살펴보고자 음절인식과 글자수-음절수이 대응여부를 살펴보았으며, 실험 2에서는 '동일한 글자는 언제나 동일하게 발음된다'는 지식을 검토하고자 자기이름의 글자가 다른 단어 속에 있을 때에도 읽을 수 있는지 보았다. 실험 3과 4에서는 자소읽기를 위한 글자해체(자소출현)과 음절해체(음소출현)의 시기를 검토하였다. 실험 3에서는 4, 5세 아동을 대상으로 자소에 의한 글자분류과제를 실시하였고 실험 4에서는 자소대치과제를 실시하여 글자 속의 자소가 음소와 대응능력을 검토하였다. 그 결과, 4세 아동에서는 글자읽기가 가능하며 자소읽기는 5세가 되어야 시작된다는 것을 보여주었는데 이를 한글터득과정과 관련하여 논의하였다. This study aims at figuring out the courses of Hangul acquisition in children. Reading skill acquisition is defined as 'the acquisition of correspondence between the written language and spoken language' in this study. The characteristics of Hangul enable the following three kinds of reading, word reading, 'Kulja' reading and alphabetic reading. This study focused on the ways of acquisition of alphabetic reading. In Experiment Ⅰ and Experiment Ⅱ, 4-aged kindergarten children were assessed whether they have any insight to (1) one-to-one correspondence between 'Kulja' and Syllable, (2) countability of syllables and (3) the consistancy of pronounciation of "Kulja'. All these measure are closely related to the ability to handle syllables. In Experiment Ⅲ, 4, 5-aged children sorted 'Kulja' on the basis of a letter in the 'Kulja'. Children's ability to disamalgam the gestalt-like 'Kulja' into its part is reflected in the performance of 'Kulja' sorting task. Experiment Ⅳ was carried out to find the children's metaknowledge about grapheme, phoneme and its mutual relationship. 'Grapheme-Substitution task' was adopted to measure the children's phoneme/grapheme manipulation ability. The result was that it is possible for 4-aged children to read Hangul by 'Kulja reading' but they have not any ability to disamalgam the 'Kulja' and syllable until 5-aged. These result are discussed in relation to the Hangul Acquisition.

ER 모델기술을 위한 그래픽 인터페이스에 관한 연구

申允植,吳得煥 金烏工科大學校 1988 論文集 Vol.9 No.-

Conceptual design의 특성과 Entity-Relationship model이 표현해야 할 사항으로부터 ER model description/manipulation language가 갖추어야 할 요소를 살펴보고 이를 바탕으로 기존의 description language를 비교 분석하고 현재의 문제점과 해결 방안을 제시한다.

초소형 구조물의 부착 방지를 위한 새로운 자기 집합 물질에 대한 연구

김봉환,오창훈,전국진,정택동,변장웅,이윤식 경북대학교 센서기술연구소 1998 센서技術學術大會論文集 Vol.9 No.1

In order to achieve stiction-free polysilicon surfaces, we have suggested a new chemical grafting precursor and confirmed their excellent characteristics. When dichlorodimethylsilane(DDS, C_(2)H_(6)SiCl_(2)), a dialkyldichlorosilane widely used in silicon machining, have been used as a precursor, experimental results were clearly comparable to those of monoalkyltrichlorosilanes octadecyltrichlorosilane (OTS, C_(18)H_(37)SiCl_(3)) or 1H,1H,2H,2H-perfluorodecyltrichloro-silane (FDTS, C_(10)H_(4)F_(17)SiCl_(3)) in terms of stiction reduction. The polysilicon cantilevers were fabricated in the carefully controlled conditions and laser interferometer indicated that their residual stress gradient was 2 MPa/μm upward from the substrate. The SEM images of polysilicon cantilever beams with DDS coating are upward and no stiction is observed up to 2 mm in length.

유용성 도료와 수용성 도료의 유해성 비교에 관한 연구 : 자동차 보수용 도료를 중심으로

권은혜,김광식,오정룡,최정근,정윤석,이유진,김은아,송세욱,정호근 한국산업위생학회 2001 한국산업보건학회지 Vol.11 No.1

The purpose of this study is to substitute water-based painting materials for the current solvent-based ones used in motor-repairing process to minimize the exposure of organic solvents to the painters. This study assessed the exposure of organic solvents to the painters using water-based and solvent-based painting materials and compared compositions, painting processes and the health hazards of the application of these alternative painting materials. The results of this study are as follows. 1. solvent-based painting materials used in motor-repairing process consist of various organic solvents, which consist primarily of toluene, xylene, ethyl benzene, ethyl methyl bezene, trimethyl bezene, ethyl acetate, butyl acetate, methyl isobutyl ketone, 2-ethoxy ethanol, 2-ethoxy ethyl acetate and toluene-2.4-diisocianate and the others. These organic solvents are know as health-hazardous substances. But water-based painting materials are high-solid, low-solvent ones and consist of such two organic solvents as 2-butoxy ethanol and 2-heptanone and the others. 2. The painters using solvent-based painting materials in motor-repairing process are exposed to various organic acetate, methyl isobutyl ketone, trimethyl benzene, 2-ethoxy ethanol, and 2-ethoxy ethyl acetate. But the painters using solvent-based ones are only exposed to 2-butoxy ethanol and 2-heptanone. 3. By using water-based painting materials in stead of solvent-based painting materials containing health-hazardous organic solvents, the exposure of such organic solvents in the painter's breathing zone can be largely prevented. 4. This study recommends water-based painting materials as substitutes for the current solvent-based ones used in motor-repairing process to minimize the exposure of organic solvents to the painters.

식도암에서 외부방사선치료와 근접방사선치료의 병용요법

남택근,나병식,오윤경 조선대학교 부설 의학연구소 2002 The Medical Journal of Chosun University Vol.27 No.2

Background and Objectives: To evaluate the role of brachytherapy following external radiotherapy by retrospective analysis in view of survival and prognostic factors in esophageal carcinoma. Materials and Methods: From Apr. 1999 to Dec. 2000, a total of 28 patients, who were diagnosed as esophageal carcinoma, were treated by curative external radiotherapy followed by brachytherapy with or without chemotherapy. Eligible primary tumors were located in the thoracic esophagus and lymphatic metastases were restricted to supraclavicular or mediastinal nodes. External radiotherapy was performed by 6 MV or 10 MV X-ray and the range of doses was 50.0 Gy - 59.4 Gy (median; 54.9) to primary tumors. One week later, the intraluminal brachtherapy (IB) was performed by high-dose rate remote controlled afterloader with radioisotope of ^192Ir. Fraction size of IB was 2~5 Gy, twice a week and delivered up to total doses of 3 Gy~ 20 Gy (median; 12). Twenty-one patients were treated by concurrent chemotherapy with the agents of cisplatin and 5-FU. Cisplatin, 75 ㎎/㎡, was given on the first day of weeks 1, 5, 8, 11 and 5-FU, 1,000 ㎎/㎡, was administered as a continuous infusion for the first 4 days of each course. Results: The estimated median survival time was 15 months and 1, 2, 3-year survival rates were 60.7%, 27.5%, 9.2%, respectively. The median survival time (MST) of the patients with stage II (n=9), III (n=17), IVA (n=2) were 20, 15, 5 months, respectively (p=0.68). The MST of the patients with complete response vs partial response were 21 vs 14 months, respectively (p=0.12). The MST of patients younger than 60 years vs older were 22 vs 12 months, respectively (p=0.07). The MST of patients with ECOG performance index 1 vs 2 were 16 vs 10 months, respectively (P=0.06) Tile Mn of patients treated by concurrent chemotherapy vs untreated were 20 vs 12 months, respectively (p=0.07). Four patients (14.3%) suffered massive hematemesis after brachytherapy and one patient with local recurrence salvaged by esophagectomy had mediastinal abscess. Of 21 patients treated by concurrent chemoradiothetapy, one patient had pancytopenia and other two patients had severe leukopenia. Conclusion: This study showed no better outcomes of brachytherapy boost after external radiotherapy than historical results of external radiotherapy alone. Concurrent chemotherapy might have more significant therapeutic role rather than brachytherapy boost and the employment of brachythelapy should be considered with great caution in the treatment of esophageal carcinoma.