수술실 간호사의 건강위험요인

노원자,이강숙 가톨릭대학산업의학센타 산업의학연구소 1998 韓國의 産業醫學 Vol.37 No.1

In order to investigate and compare the health risk factors of nurses in the operating room (OR nurse) and ward (WARD nurse), the questionnaire survey for subjective symptoms was carried out on 553 nurses(132 OR nurses and 421 WARD nurses) who were employed at seven hospital. The self-administered questionnaires were composed of low back pain, subjective fatigue symptoms, musculo-skeletal symptoms, psychological stress and reproductive function. The results were as follows : 1. In the type of working posture and working environment, there were significant difference between two groups for working posture, waist form height of working table, satisfaction, of chair, lifting & carring. 2. Job satisfaction, duration of work, height of working table, satisfaction of chair, lifting & carrying were significantly associate the low back pain. 3. In the complaints of subjective fatigue symptoms, the total mean score was higher in OR nurse than WARD nurse, but there was not significant. The items that the mean score of OR nurse was significantly higher than WARD nurse were 'head feels muddled', 'apt to forget', 'feel choky'. 4. In the complaints of musculo-skeletal symptoms, the total mean score was higher in OR nurse than WARD nurse, but there was not significant difference. The item which the mean score of OR nurse was significantly higher WARD nurse was 'wrist discomfort or pain'. 5. The comparison of spontatenous abortion in married who had the experience of pregnancy were significantly associated the stress risk group. 6. In all of OR and WARD nurse, the job satisfaction is associated with subjective fatigue symptoms, musculo-skeletal symptoms, and stress. In conclusion it suggested that working posture, working environment, stress, and job satisfaction were health risk factors of nurses working in the operating room. Further prospective intervention studies should be conducted to educate right working posture, to improve the working environment, to decrease the stress, and to increase the job satisfaction.

국가대표 테니스 선수의 경기력 향상을 위한 트레이닝 프로그램 개발

노갑택,송원석 명지대학교 예술체육대학연구소 2004 藝體能論集 Vol.15 No.-

This research of elite tennis athletes focuses upon the factors of athletic confidence and leadership and provides objective information for a fair assessment of a match. The contents of this assessment will be determined Through the debvelopment of a program with concrete objectives. This research involved university male tennis athletes from 2000 to 2001, and the results of the study show a solidification of an athletes' confidence, leadership and an arrival of an assessment by use of objective information. The skills of an athlete demonstrated during a tennis match, raise the questions as to an individual's physical strength, and mental ability during a game. Thus, training over a long period of time is absolutely necessary, theoretically speaking. In order to develop a training program for tennis matches, one must incorporate constant training and physical strength development to improve on average physical strength and specialized physical training of certain parts of the body which ultimately results in high power training theory, Thus strengthening programs, practical training, mental strength training and relaxation techniques are also essential. Also, tactical training and strength training is important for positive results after planned practice. The formaion of a continual program according to one's sex is also an important factor when developing a theory. The development of a training program and specialized training are of the utmost important factors for an athlete to improve his/her game. Currengly, the top world players engage in specialized training and these athletes have paved the way for future changes in modern tennis leadership. With a combination of theory, practical talent and a positive mind set, these athletes during a tennis match will help to give us a better understanding of technique for improved and more efficient play.

Static Induction Transistor(SIT), Drive signal phase shift control, Induction heating

노채균,김동희,김종해,남승식,정원영,심광열 嶺南大學校 工業技術硏究所 1997 工業技術硏究所論文集 Vol.25 No.1

This paper proposed a novel SIT high frequency resonant inverter having drive signal phase shift control function. Phase control type inverters using SIT can realize a power conversion at the high switching frequency with low switching loss. Especially, the high output power can be obtained by connecting the output terminal of two unit inverters in series. The stability of system using protection circuit for over current and the automatic follow-up control for load variation by using PLL are presented. This inverter produces approximately sinusoidal waveform at a high frequency, ranging from 180 Khz to 220 Khz, and is applied to the 2KW induction heating. The operating characteristics of this inverter circuit are discussed from a theoretical point of view and compared with experimental results.

사람 피부섬유아세포에서 안토시아닌(덱스트린이 결합된 시아니딘)의 항산화활성

노빛나,박원봉 서울여자대학교 자연과학연구소 2011 자연과학연구논문집 Vol.23 No.-

Antioxidant activity of anthocyanin (dextrin-conjugated cyanidin) from Acanthopanax divaricatus var. albeofructus (ADA) fruits was investigated in human dermal fibroblast cells. As a result, the generation of H2O2 and lipid peroxide induced by UVA-irradiation in HDF-N cells was reduced by treatment of anthocyanin. In addition, enhanced enzyme activity was observed in cells treated with anthocyanin in both superoxide dismutase (SOD) and catalase (CAT) reduced by UVA irradiation. In conclusion, the results show that the anthocyanin from ADA fruits could be potential candidates for the protection of fibroblast against the damaging effects of UVA irradiation and for development of source of antioxidant agent. Key words:UVA, fibroblast, Acanthopanax, anthocyanin, antioxidant, lipid peroxidation, SOD, CAT.

액정유체의 압력 유도 흐름에서의 분자 배향과 속도 분포

한원희,조정호,전종기,노상균,고승태 동양대학교 2001 동양대학교 논문집 Vol.7 No.1

본 연구에서는 액정의 압력 유도 흐름에 대해 적응성 토크 균형식과 코시 운동량보존식을 액정 연속체 이론의 핵심이 되는 Leslie-Ericksen 이론에 적용하여 수치해석 방법들로 풀어내었다.비선형 편미분 방정식계의 해를 구할 때 경계조건으로 쓰인 분자 배향닻 조건은 평행 닻조건(parallel anchoring)과 직교 닻조건(homeotropic anchoring)이다.분자 배향 분포는 평행 닻조건에서나 직교 닻조건에서나 시간이 지남에 따라 간단한 전단 흐름에서와 같이 3차원 비평판 배향의 구조를 갖게되지만 배향 비틀림의 구조가 다름을 알 수 있었다.배향 비틀링의 3차원적 구조를 갖게됨에 따라 압력 구배가 걸리는 흐름방향의 주 속도 분포뿐만 아니라 직교되는 방향으로 부 속도분포가 생기며 정상상태로 발전해가는 속도 분포 진화는 점근적이 아닌 진동적이다.비정상상태에서나 정상상태에서 속도 분포는 비 뉴톤성임을 알 수 있다.비등방성 Miesowicz 점도 순열에 따른 평행 닻조건에서의 더 많은 흐름량을 볼수 있고 직교 닻조건에서는 벽면에서 보이는 작은 속도 구배량의 특징을 가진다.

증후성 단일 소심부뇌경색의 임상적 및 방사선학적 양상

신원철,이태규,노용우,오재욱,장대일,정경천 대한노인병학회 2000 Annals of geriatric medicine and research Vol.4 No.3

한국 어린이와 성인의 표준잇솔규격개발에 관한 연구

이원재,이병진,배광학,김영수,노정,문혁수,백대일,김종배 대한구강보건학회 2003 大韓口腔保健學會誌 Vol.27 No.4

Purpose of this study was to obtain basic anatomical data for developing optimal toothbrush which is appropriate for Koreans Dental study models were examined by measuring the length from labial midline of deciduous canine to distal surface of deciduous second molar, from labial midline of permanent canine to distal surface of second premolar, from mesial surface permanent first molar to distal surface of permanent second molar, cervico-incisal length of deciduous central incisor, cervico-incisal length of permanent central incisor, from mesiobuccal cusp of deciduous maxillary second molar to mesiolingual cusp of deciduous maxillary second molar, from mesiobuccal cusp of permanent maxillary first molar to mesiolingual cusp of permanent maxillary first molar, from distolinual cusp of deciduous mandibular second molar to mesiolingual cusp of deciduous mandibular second molar, from mesiobuccal cusp of permanent mandibular first molar to mesiolingual cusp of permanent mandiblar second molar in 241 subjects. And the width of right hand was examined on each subjects by measuring the length of landmarks which were selected in handwrist X-ray film. Commercial toothbrushes sold in Korea were collected and the head length, head width, bristle length and handle length of toothbrushes were measured. The obtained results were as follows; 1. The head length of toothbrush which were appropriate for Koreans aged 6 to 8 was less than 21.8 mm. The head width length of toothbrush which were appropriate for Koreans aged 6 to 8 was less than 8.4 mm. The bristle length of toothbrush which were appropriate for Koreans aged 6 to 8 was more than 5.7 mm. The handle length of toothbrush which were appropriate for Koreans aged 6 to 8 was more than 84.3 mm. 2. The head length of toothbrush which were appropriate for Koreans aged 9 to 11 was less than 20.4 mm. The head width length of toothbrush which were appropriate for Koreans aged 9 to 11 was less than 8.4 mm. The bristle length of toothbrush which were appropriate for Koreans aged 9 to 11 was more than 9.3 mm. The handle length of toothbrush which were appropriate for Koreans aged 9 to 11 was more than 95.2 mm. 3. The head length of toothbrush which were appropriate for Koreans aged over 12 was less than 25.5 mm. The head width length of toothbrush which were appropriate for Koreans aged over 12 was less than 8.6 mm. The bristle length of toothbrush which wee appropriate for Koreans aged over 12 was more than 9.6 mm. The handle length of toothbrush which were appropriate for Koreans aged over 12 was more than 101.1 mm. 4. Some toothbrush for children was not appropriate because of its big size, and toothbrush sells in Korea must be diversified for appropriate selection.

Posterior available space의 crowding과의 상관관계 및 변화에 관한 연구

이노범,김광원 대한치과교정학회 1994 대한치과교정학회지 Vol.24 No.3

The research work has been conducted in order to establish facts on posterior available space in patients with crowding. The relation between crowding and posterior available space was worked out through a cross sectinal study of fifty eight patients showing class I malocclusion. In addition, a longitudinal overlapping study was done by examing twenty patients who had their bicuspid extracted and forty nine patients who did not, at the orthodontic department of dental clinic affiliated in Chosun University. The patients had been examined for three years and eight months on a regular basis, and the study yielded the following conculusion. 1. There was a great difference in posterior available space between patients with serious crowding and those with slight crowding. The former marked 15.2mm of posterior available space and the latter 19.9mm. 2. Posterior crowding index was acquired by joint consideration of the diameter of posterior teeth and posterior available space, and manifested the highest relationship with crowding among measured items. 3. Patients who had their bicuspids extracted exhibited increase in posterior available space of 1.6mm/year and those who did not, 1.8mm/year. 4. The absorption of anterior border of ramus turned out to be most deeply related with the increase of posterior available space. 5. Anterior border of ramus was absorbed at average rate of 0.7mm/year during the period of observation. 6. The extraction of bicuspids had little influnce on the change in posterior available space.

치근단 낭으로 오인한 단낭성 법랑모세포종

박노진,이원학,윤정훈,민병진 大韓顎顔面成形再建外科學會 2002 Maxillofacial Plastic Reconstructive Surgery Vol.24 No.5

Unicystic ameloblastomas are different from conventional ameloblastomas in clinical, radiographic and pathological characteristics. Clinically, the unicystic ameloblastomas tend to occur at an earlier age, and they are mostly located in posterior mandible. The lesions appear as well-circumscribed radiolucent unilocular lesion in radiographical studies. When removing the lesions, however, unicystic ameloblastomas share similar features with odontogenic cysts that the diagnosis may only become evident when the entire specimen is available for pathologic examination. Vickers and Gorin represented the early histological characteristics of ameloblastic change, and Robinson et al. described a distinct variant of ameloblastomas in which the response to enuleation was good, showing a low recurrent rate. We report a case of two identical featured radiolucent lesions on the periapical region of the left mandible. The lesions were thought to be periapical cysts clinically, but diagnosed as unicystic ameloblastoma based on their histologic findings.

Formyl Peptide에 의하여 유도된 중성 백혈구의 화학주성에 미치는 칼슘이온의 영향

황정원,정노팔 大韓免疫學會 1993 大韓免疫學會誌 Vol.15 No.-

Chemotaxis of neutrophils stimulated by fMLP(N-formyl-methionylleucylphenyl-alanine) is not fully understood process. Present study mainly deals with the role of Ca" as a second messenger in chemotaxis. The chemotaxis of neutrophils which were treated with calcium antagonist and calcium channel blocker was decreased significantly. To investigate the effect of extracellular and intraceI-lular calcium, EGTA or EGTA +A23187 were treated. Both treatments decreased the chemotaxis of neutrophils. Intracellular Ca' level change was checked using fluorescent dye Quin-2/Am. When treated with fMLP, intractellular Cap+ level was found to be dependent on both extracellular Cal+ uptake and release from internal Cat+ storages. On the other hand, the treatment of callmodulin antagonists did not have any significant effect on chemotaxis. When treated with varying concentration of PK-C inhibitor, chemotaxis was decreased dependent manner on concentration. In addition to Ca'', PK-C is also supposed to be related to the signal transdution process of chemotaxis induced by fMLP.