구강균에 대한 각종 한약제의 증식 억제

정영건,지원대,김성영,곽동주,서수교,백경연 한국위생과학회 1997 한국위생과학회지 Vol.3 No.1

The effect of oriental medicines an the growth of oral bacteria(B. pumilus JU4, B. coagulans JU6, B. subtilis var globigii JU7 and B. subtilis var. globigii JU9) which were isolated from teeth, gums and tongues of patients was investigated. lt was shown that the water extracts of Glycyrrhiza glabra L. var. glandulifera Regel et Zucc., Schizandrae Fructus and Coptidis Rhizoma have the strong antimicrobial activity against every test organism. Especially, the water extract of Schizandrae Fructus has the most antimicrobial activity against all test bacteria of which MIC were the same as 0.25%. The growth of oral bacteria B. pumilus JU4 was inhibited by addition of the water extracts of Glycyrrhizae Radix, Schizandrae Fructus and Coptidis Rhizoma in the concentration of 0.9%, 0.2% and 0.1% respectively. It was tested that specific growth rates of B. pumilus JU4 in each concentration of the water extracts of Glycyrrhizae Radix, Schizandrae Fructus and Coptidis Rhizoma. From the results, the test showed that mean of specific growth rates of B. pumilus JU4 decreased 102%, 186% and 210% in 3% concentration of the water extracts of Glycyrrhizae Radix, Schizandrae Fructus and Coptidis Rhizoma more than those in control respectively.

합리적 정서 처치기법이 심리적 요인에 미치는 효과

원주연,김병완,김윤태 대전대학교 기초과학연구소 2000 自然科學 Vol.11 No.2

이 연구는 여러 가지 심리적 요인에 긍정적 영향을 미칠 것으로 예상되는 합리적 처치기법(REBT)이 심리적 요인(경쟁불안 · 스포츠자신감 · 경쟁지향성)에 미치는 효과를 규명하여 사격 경기력 향상을 위한 심리적인 기초자료를 제공하는데 그 목적이 있다. 이에 본 연구는 3년 이상 선수경력이 있는 고등부 남 · 여 사격선수 80명을 대상으로 REBT 프로그램을 통해 종속변인의 변화량을 성별, 처치집단별로 이원변량분석을(two way ANOVA)을 실시하여 다음과 같은 결론을 얻었다. 1. 신체적 상태불안 변화량의 성별, 처치집단별 차이에서 처치집단이 통계적으로 유의한 차이가 나타났다. 즉, 처치집단이 통제집단에 비해 신체적 상태불안 수준이 큰 폭으로 감소하였다. 2. 인지적 상태불안 변화량의 성별, 처치집단별 차이에서 처치집단은 통계적으로 유의한 차이가 나타났다. 즉, 처치집단이 통제집단에 비해 인지적 상태불안의 감소가 현저했다. 3. 스포츠 자신감 변화량의 성별, 처치집단별 차이에서 처치집단은 통제집단에 비해 특성스포츠자신감과 상태스포츠자신감이 현격하게 증가하였다. 4. 과제지향성 변화량의 성별, 처치집단별 차이에서 처치집단은 통계적으로 유의한 차이가 나타났다. 즉 처치집단은 사후검사와 사전검사의 변화량이 감소하였다. 5. 자아지향성의 성별, 처치집단별 차이에서 모두 처치집단은 통제집단에 비해 자아지향성이 증가하는 경향이 있었다. 즉, 처치집단이 통제집단에 비해 자아지향성이 향상되는 결과이다. The present study is designed to examine the effect of REBT program on somatic anxiety, cognitive anxiety, sport confidence, task orientation and ego orientation. The object of the study is made up of eighty high school shooting players who all possess individual career record over three years. The collected data were analyzed by 2-Way ANOVA and the change of dependent variables was analyzed according to the gender groups and treatment groups. The implications of the study are as follows. 1. Change in somatic anxiety The gender and treatment groups showed effect on the change of somatic anxiety in the post and the pre-test 2. Change in cognitive anxiety The gender and treatment groups showed effect on the change of cognitive anxiety in the post and the pre-test 3. Change in sport-confidence The gender and treatment groups showed effect on the change of traiustate spork-confidence in the post and the pre-test 4. Change in task orientation The gender and treatment groups showed effect on the change of task orientation in the post and the pre-test 5. Change in ego orientation The gender and treatment groups showed effect on the change of ego orientation in the post and the pre-test

알루미늄 破覆鋼板의 疲榮强度와 프랙트그래피에 관한 硏究

周原植,吳世旭 동아대학교 공과대학 부설 한국자원개발연구소 1981 硏究報告 Vol.5 No.2

Aluminum coated steel has been used as a simple stress of material for machine parts. Because it is excellent in a high temperature, corrision resistance and wear resistance. It has been still widely applied to making highly efficient machine parts of an extremely high fidelity with the task of a complicated stress and repeated load. In these years of severe economical situation around the world, the shortage of natural resources has forced to replace the high priced materials-super allay steel-, to the low priced materials of an extremely high fidelity for machine parts, resulting to be successful in developing the above mentioned aluminum coated steel for this propose. Therefore, concentrated all efforts in this study on the investigation and observation of the application of V-notch specimens of structural steel plate treated with aluminum diffusion coated, to the fatigue strength and fatigue behavior effected from bending fatigue, tension fatigue, static tension fracture and fracture surface. The result of experimental study are as follows : 1) Notch specimens of structural steel plate treated with aluminum diffusion coated has 20% higher fatigue limit than raw materials. This result confirmed that aluminum coated steel could be applied in raising fatigue limit. 2) The elevation of fatigue limit comes from the generation of peeling crack in between the alloy layer and matrix. 3) The bending fatigue fracture surface of the low stress level has a little striation while the high stress level and tension has a conspicuous strition. 4) The bending fatigue fracture surface of the low stress level has a tire track.

운동선수들의 성취목표 지향성과 내적동기

원주연,김윤태 대전대학교 기초과학연구소 1998 自然科學 Vol.9 No.2

본 연구는 고등학교 운동선수들의 성취목표 지향성 (과제와 자아)과 스포츠 활동에 대한 그들의 내적동기가 어떻게 상호작용적으로 관계를 갖고 있는가를 분석하고 규명하는데 목적이 있다. 연구조사 대상은 다양한 종목에 참여하고 있는 (축구, 야구, 배구, 농구, 핸드볼, 하키) 대전·충남 고등학교 팀 운동선수들 221명을 무선표집하여 그들의 성취목표 지향성과 내적동기 요인의 차이 관계를 규명하기 위하여 평균, 표준편차, 이원변량분석(two way ANOVA) 및 정준 상관관계(Canonical Correlation) 실시하였으며, 그 결과 다음과 같은 결론을 얻었다. 1. 높은 과제 지향성을 갖는 운동선수들은 낮은 과제 지향성을 갖는 운동 선수들 보다 스포츠 활동에 유의성 있게 높은 내적동기(흥미, 유능감, 노력)수준을 나타내고 있으며, 낮은 긴장감 수준을 보이고 있다. 2. 높고 낮은 자아 지향성을 갖는 운동선수들의 내적동기 수준은 유의한 차가 없다. 3. 과제와 자아 지향성의 상호작용적 집단들의 재적 동기 수중은 유의한 차가 없다. 4. 스포츠 활동에 대한 과제 지향성은 내적동기 요인들과 유의한 정적인 상관관계가 있다. Achievement goal orientation theory predicts that an adaptive achievement pattern will be observed among athletes who are task involved in sport situations. However Ego-oriented athletes with low levels of perceived ability are assumed to exhibit negative, adaptive-nonadaptive achievement-related behaviors. Based on this theoretical prediction, this study attempted to determine the relationship of achievement goal orientation (Task or Ego) to intrinsic motivation in a sport setting. It was Hypothesized that task oriented would positively related to intrinsic motivation, while ego would negatively related to intrinsic motivation 221 male athletes from nine visit high school teams were asked to completed the Task and Ego Orientation in Sport Questionnaire(TEOSQ) and Intrinsic Motivation Inventory(IMI). Results indicated that Athletes who perceived their sport environments to be strongly task oriented reported significantly higher levels of enjoyment, competence, and significantly lower levels of tension an compared to athletes who perceived team climates positively related to the enjoyment, competence, and effort, but negatively related to tension.

이트리아 첨가 붕규산염 유리로 제조한 알루미나-유리 복합체의 파괴인성 평가

원대희,이민호,박주미,배태성,진영철 대한치과기재학회 1998 대한치과재료학회지 Vol.25 No.2

The study was performed to evaluate the fracture toughness of dental alumina-glass. Alumina compacts were prepared by press 150㎏/㎠ and sintering at 1100℃ for 2hrs. Dense composites were made by infiltrating partially sintered alumina with four different borosilicate glasses containing 1, 3, 6, 9 mol% Yttria(Y₂O₃) at 1200℃ for 6hrs. Apparent porosity was measured by the KS L 3114 principle method. Fracture toughness values were about ∼4.72 MPa·m½. Porosity rates of alumina-glass composites were about 0.2%. The fracture surface of the alumina-glass composites showed a Palmqvist crack pattern at the fracture origin and indicated a tendency by the frictional interlocking between the microstructurally rough fracture surfaces.

간경변 환자에서 Oro-cecal Transit Time의 측정

원경준,이준,변유미,조민근,조주연,서정균,김영대,박찬국,김만우 朝鮮大學校 附設 醫學硏究所 2008 The Medical Journal of Chosun University Vol.33 No.2

Background: Neurotransmitter like substances in the gut have been proposed to contribute to the overall portal systemic encephalopathy (PSE). The source of the ammonia in patients with PSE is mainly the small bowel, as a result of the conversion of glutamine in the diet to glutamate and ammonia. PSE is highly responsive to changes in diet, to antibiotic therapy and to ingestion of nondigestible disaccharides such as lactulose. This study was performed to evaluate the relationship between PSE and oro-cecal transit time. In addition, performed to evaluate the effect of severity, cause, complications of liver cirrhosis on oro-cecal transit time. Methods: Between August 2006 and February 2007, 48 cirrhotic patients consecutively was enrolled in study their oro-cecal transit time after informed consent was obtained. A non-invasive hydrogen breath test was used to study oro-cecal transit time (OCTT). Result: The OCTT were delayed in cirrhotic patients with PSE compared without PSE (123.3 ± 42.7 min vs 170.0 ± 58.3 min, p<0.05). OCTT tended to prolongate further as the damage in the liver got worse, nevertheless the result was statistically meaningless (p<0.111). Neither presence of ascites or cause of PSE had any influence on gastrointestinal transit. Conclusions: Cirrhotic patients with PSE have more delayed OCTT than without PSE. Further research is needed to find out the relationship between OCTT and severity of liver cirrhosis.

소아청소년과의사의 영유아기 구강건강 관리에 대한 인식도 조사

주태준,박호원,이주현,서현우 大韓小兒齒科學會 2009 大韓小兒齒科學會誌 Vol.36 No.3

국민건강보험공단에서 실시하는 영유아 건강검진은 5회의 일반검진과 2회의 구강검진으로 구성되어 있다. 하지만 9개월 영유아 건강검진 시 구강건강 상담 및 교육은 일반의사가 담당하도록 되어 있어 이를 주로 담당하게 될 소아청소년과의사의 구강건강 상담 항목에 대한 지식이 필요한 상황이다. 이번 조사의 목적은 소아청소년과 전문의나 전공의를 대상으로 영유아기 구강건강교육에 대한 인식도를 알아보는 것으로 150명의 설문을 분석해 다음과 같은 결론을 얻었다. 1. 조사 대상자의 대부분은 유아기우식증으로 인한 치과 의뢰 경험이 있었고, 절반 이상의 응답자는 영유아 환자에 대해 구강검사를 시행하지 않고 있었다. 2. 조사 대상 소아청소년과의사들의 첫 치과방문 시기에 관한 적절한 인식도가 확립되지 않았다. 3. 영유아 건강검진 중 구강건강 교육 항목에 대한 인지도가 전반적으로 부족하였다. 이에 대한 교육의 강화가 필요하다. 4. 영유아 구강질환 예방을 위한 의과계의 관심과 더불어 치과계와의 협조가 필요하리라 생각 된다. For prevention of ECC, the Korean Academy Of Pediatric Dentistry(KAPD) advocate that Children should be seen as early as 6 months of age after the first tooth erupts, or 12 months of age. Pediatrics have increased access to new mothers and children 6 to 12 months while dentists does not see young children unless there are urgent problems. Therefore, they have an opportunity to impact infant oral health care. This study's purpose was to examine pediatricians' awareness and experience about infant oral health care. For the study, we surveyed of 150 pediatricians in korea. The survey comprised 10 questions related to infant oral health care and the recommended age a child go for their first dental visit. The results were as follows: 1. Most respondents had been referred children to a dentist for treating ECC and more than half of respondents reported that they did not do oral examination in their practice. 2. The majority of surveyed pediatricians are not advising patients to see the dentist by 1 year of age. 3. The surveyed pediatrician's awareness of infant oral health care is insufficient. The oral health education should be reinforced. 4. There is a need for increased infant oral health care education in the medical and dental communities.

Electropulsing Treatment on Enhancement of Electrical Conductivity of Screen-Printed Ag Wire

Ju‑Won Park,Howook Choi,Hwangsun Kim,Simoon Sung,Hye‑Jin Jeong,Il Kim,Jaeseok Gong,Sung‑Tae Hong,Heung Nam Han 대한금속·재료학회 2021 METALS AND MATERIALS International Vol.27 No.5

The effect of high electric current density on the sintering of Ag wires manufactured by screen printing is evaluated throughelectrical resistivity analysis and microstructure observation. Different forms (continuous and pulsed) of electric currentwith different current densities are applied to the specimens. Conventional heat treatment is also performed as a controlgroup to examine the athermal effect of electropulsing treatment. Compared to the conventional heat treatment, the resistivityis reduced more under the electropulsing treatment with continuous current for the same temperature and treatment time.Also, the process time of electropulsing treatment can be reduced by applying a pulse form of high density current insteadof continuous current without losing the benefit of enhanced reduction of resistivity. The microstructural observationsobtained from high angle annular dark field scanning transmission electron microscope and a digital precession instrumentclearly show that necking connecting the crystals is formed more firmly under electric current. In addition, the temperaturechange of Ag wire and substrate is calculated according to the change of the resistivity when the electric current is appliedto confirm the reliability.

사회체육의 추진 방향설정 재고

元周淵 大田大學校 1991 論文集 Vol.10 No.1

축구팀의 응집력이 성원만족 및 팀 성공에 미치는 영향

원주연,김윤태 대전대학교 기초과학연구소 1997 自然科學 Vol.8 No.2

본 연구는 축구팀의 응집력이 성원 만족 및 팀성공에 미치는 영향에 관한 선행 연구를 기초로 가설적 모형을 설정하여 축구팀의 응집력, 성원만족, 팀성공간의 관계를 규명하는 데 주된 목적이 있으며, 목적을 달성하기 위하여 첫째, 축구팀의 응집력이 성원만족에 미치는 영향, 둘째. 축구팀의 응집력이 팀성공에 미치는 영향, 셋째, 축구팀의 응집력, 성원만족, 팀성공간의 인과적 관계를 등을 분석. 규명하였다. 연구의 조사대상은 '97년 경기도 협회장기 대회에 참가한 고등학교 축구팀을 대상을 감독이나 코치가 제출한 선수명단을 근거로 8개팀의 인원현황을 조사하여 각 팀당 25명을 선정하였다. 표집된 8개팀에서 실제 설문지조사에 참여한 인원은 불성실하게 응답한 자료로 판단되거나 조사내용의 일부가 누락된 설문지를 제외한 총 163명이다. 수집된 자료를 분석하기 위하여 사용한 통계적 기법은 상관분석, 다중회귀분석, 그리고 중다회귀분석을 이용한 경로분석을 하였으며, 연구 방법 및 절차를 통하여 본 연구에서는 다음과 같은 결과를 얻었다. 1. 축구팀의 응집력 네가지 하위요인 중 개인-과제적 응집력은 성원만족의 하위요인인 경기, 위치 성원만족에 유의한 영향을 미치는 것으로 나타났다. 2. 축구팀의 응집력 네가지 하위요인 모두는 팀 득점에 유의한 영향을 미치지 않는 것으로 나타났으며, 축구팀의 응집력 네가지 하위용인 중 집단-과제적 응집력은 팀 실점에 유의한 영향을 미치는 것으로 나타났다. 또한 축구팀의 응집력 네가지 하위요인 중 개인-사회적 응집력은 팀 승률에 유의한 영향을 미치는 것으로 나타났다. 3. 축구팀의 응집력은 팀성공에 직접적인 영향을 미칠뿐만 아니라 성원 만족을 통하여 간접적인 영향을 미치는 것으로 나타났다. 따라서 축구팀의 응집력은 팀성공을 매개하는 성원만족을 통하여 팀성공을 향상시키는데 직접간접적으로 영향을 미침으로써 관련 변인간에 인과적 관계가 있다고 할 수 있다. The purpose of this study was to verify hypothetical model through identifying the influence of cohesiveness on member satisfaction and team success among Soccer teams. Subjects for this study consisted of 8 high school Soccer teams and 163 players in Kyoung Gi Province The methods of statistics used to analyze the collected data were correlation analysis, multiple regression analysis, and path analysis using multiple regression analysis. The implications of the study are as follows: 1. The cohesiveness of soccer team have an influence on satisfaction of game, location, belonging. 2. The cohesiveness of soccer team has no influence on team points. The cohesiveness of soccer teams have a positive influence on marks obtained by the opponents. The cohesiveness of Soccer teams have a positive influence on the percentage of victories. 3. The cohesiveness of soccer teams has a direct and indirect effect on increasing the degree of team success through member satisfaction. The above results, when taken together, show that the cohesiveness of soccer team contributes to increasing teams success by increasing the degree of member satisfaction.