• 대한치과교정학회지
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• 제45권5호
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• pp.261-267
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• 2015

Objective: To measure aspartate aminotransferase (AST) activity in the pulp of teeth treated with fixed appliances for 6 months, and compare it with AST activity measured in untreated teeth. Methods: The study sample consisted of 16 healthy subjects (mean age $25.7{\pm}4.3$ years) who required the extraction of maxillary premolars for orthodontic reasons. Of these, 6 individuals had a total of 11 sound teeth extracted without any orthodontic treatment (the control group), and 10 individuals had a total of 20 sound teeth extracted after 6 months of orthodontic alignment (the experimental group). Dental pulp samples were extracted from all control and experimental teeth, and the AST activity exhibited by these samples was determined spectrophotometrically at $20^{\circ}C$. Results: Mean AST values were $25.29{\times}10^{-5}U/mg$ (standard deviation [SD] 9.95) in the control group and $27.54{\times}10^{-5}U/mg$ (SD 31.81) in the experimental group. The difference between these means was not statistically significantly (p = 0.778), and the distribution of the AST values was also similar in both groups. Conclusions: No statistically significant increase in AST activity in the pulp of mechanically loaded teeth was detected after 6 months of orthodontic alignment, as compared to that of teeth extracted from individuals who had not undergone orthodontic treatment. This suggests that time-related regenerative processes occur in the dental pulp.

• 대한정형도수물리치료학회지
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• 제18권2호
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• pp.23-29
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• 2012

Background: The present study was conducted with 30 adult males in order to examine the muscle activity of the trunk and the lower extremities at diverse initial bending angles of the hip joint during bridge exercise on a stable surfaces and on an unstable surface that is widely performed for stabilization. Methods: The initial angles of the hip joint used were $0^{\circ}$, $45^{\circ}$ and $90^{\circ}$ and the subjects were divided into a matt experimental group and a balance training group. Results: In maximum values of muscle activity at different exercise methods and angles, the matt experimental group showed statistically significant differences in the muscle activity values of the rectus abdominis muscle, the erector spinae muscle, the rectus femoris muscle and the peroneus muscles between different angles while the balance training group showed significant differences only in the muscle activity values of the erector spinae muscle between different initial angles of the hip joint. The matt experimental group showed significant differences in muscle activity between initial angles $0^{\circ}$ and $90^{\circ}$, between $45^{\circ}$ and $90^{\circ}$ in the rectus abdominis muscle, between $0^{\circ}$ and $90^{\circ}$ in the erector spinae muscle, between $45^{\circ}$ and $90^{\circ}$ in the rectus femoris muscle and between $0^{\circ}$ and $90^{\circ}$ in the peroneus muscles while the balance training group showed significant differences between $0^{\circ}$ and $90^{\circ}$ in the erector spinae muscle. Conclusions: Therefore, it is thought that bridge exercises should be applied to patients using diverse methods.

• 대한예방한의학회지
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• 제19권2호
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• pp.145-157
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• 2015

Objective : This study aimed to analyze a comprehensive feature of experimental research on Insamyangyoungtang and develop a strategy that can be used for experimental studies on Insamyangyoung-tang in the future. Method : The journal search was performed using six databases : PubMed, Chinese database (China Network Knowledge Infrastructure, [CNKI]), Japan database (Japan Science and Technology Information Aggregator, Electronic, [J-STAGE]) and three Korean databases (Oriental Medicine Advanced Searching Integrated System [OASIS], Research Information Service System [RISS], and Korean Studies Information Service System [KISS]). We used limited keywords and analyzed studies by publication year, experimental models, and the subjects of biological activities. The mechanism of pharmacological activity in accordance with the therapeutic effects of Insamyangyoung-tang was noted. Results and Conclusion : A total of 43 studies (6 domestic studies and 37 foreign ones) were examined according to the inclusion criteria of the experimental study. Research on the pharmacological activities of Insamyangyoung-tang showed its therapeutic effects on the nervous and immune systems, as well as its anti-aging, anti-fatigue, and hematopoietic effects. Additional efficacy and safety assessments and experimental and clinical studies should be performed to evaluate the mechanism of Insamyangyoung-tang. The present review has provided preliminary information for further studies on Insamyangyoung-tang.

• 한국초등과학교육학회지:초등과학교육
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• 제23권1호
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• pp.17-26
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• 2004

The purpose of this study is to verify the effect of science-play activity that isn't easily completed in a course of study, put in practice an development activity class on the scientific inquiry skills and the scientific attitude of elementary school students. For this purpose, the general activity was applied for the comparative group (40 students), the science-play activity was applied for the experimental group (34 students); they are composed of 5th and 6th graders elementary school students of 74, a class of an hour during a week. The results were analyzed by means of comparing between groups as well as within groups. The results of this research is as follows: Firstly, the science-play activity as an development activity was effective in the improvement of the scientific attitudes of elementary school students. Secondly, the science-play activity as an development activity was effective in the improvement of the scientific inquiry skills of elementary school students.

• 대한핵의학회지
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• 제6권2호
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• pp.7-20
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• 1972

Experimental radiation nephritis was produced in 15 rabbits by X-irradiation. About $2,000{\gamma}$ (tissue doses) were given to both kidneys of a rabbit in 5 days. Other tissues and organs except both kidneys were protected with 2mm thickened lead plates. 5 weeks after the last irradiation, blood pictures, blood pressures, B.U.N., serum creatinine, Ca, Mg, Fe levels and serum erythropoietin activity of the irradiated rabbits were studied. After finishing above studies, rabbits were sacrificed and both kidneys were removed and examined histopathologically. Same laboratory and pathological studies were performed in 6 control rabbits. In this study, the author obtained following results. 1) Both kidneys of rabbitis with experimental raditation nephritis showed marked histopathological changes, i.e.: renal tubules showed diffuse cloudy swelling, impacted intraluminal hyaline casts and focal precipitations of lime salts on the tubular epithelium. Diffuse interstitial fatty necrosis and various degrees of fibrotic infiltrations on the interstitium were also seen in association with focal lymphocytic infiltrations. Hyaline degenerations were observed on the glomeruli and small vessels. 2) Experimental radiation nephritis rabbits showed marked lowering in R.B.C. counts, decreased hemoglobin levels, low hematocrit values and leucopenia in comparison with those of control rabbits. (P<0.01). (Table 1 & 2). 3) Mild proteinuria were observed in experimental radiation nephritis in rabbits. 4) The levels of B.U.N. and serum creatinine increased in experimental radiation nephritis. (P<0.01). (Table 1,3 & 4) 5) The levels of serum Ca and Mg Showed no statistical difference in comparison with those of control rabbits. (P>0.05) (Table 3 & 4). 6) No statistical correlations were observable between the levels of B.U.N. and Hb. values. (${\gamma}=-0.223$) No close correlations (${\gamma}=-0.328$) were noticed between the levels of B.U.N. and serum iron levels. 7) Erythropoietin activity (R.B.C. $^{59}Fe$ Incorporation) was measured by the modified Fried method. No change in its activity was noticed in radiation nephritis group comparing with that of the control group. (P>0.05). (Table 1,3 & 5). 8) Carotid artery blood pressures showed also no difference. (P>0.05). (Table 1 & 2).

• The Journal of Korean Physical Therapy
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• 제28권1호
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• pp.52-58
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• 2016

Purpose: This study intended to mediate shoulder exercise using grasping and investigate examine how its effects on affects activities of the shoulder surrounding muscles of the shoulder and thickness of shoulder muscle to suggest effective exercise for patients with rotator cuff repair to return to daily life. Methods: This study has been done targeteding male patients more than 6 weeks after having En-masse Suture Bridge Technique as rotator cuff repair of the right shoulder, aged 40 to 55 in a medical institution located in Jeollanam-do. Experimental group I (n=15) was selected for a conducting common exercise therapy program and Experimental group II (n=15) was selected for an conducting exercise therapy program using grasping. %RVC was measured by surface electromyography and muscle thickness was measured by ultrasound before mediation to for analysisze of before and after results within group and between groups. Results: In comparison of change of %RVC, Tthere were meaningful differences in only posterior deltoid and infraspinatus in comparing a change of %RVC within experimental group I (p<0.001),. and Tthere were meaningful differences in both supraspinatus and infraspinatus in muscle thickness within experimental group I (p<0.001). In comparison of change of %RVC, Tthere were meaningful differences in anterior deltoid, posterior deltoid and infraspinatus in comparing a change of %RVC within experimental group II (p<0.05)(p<0.01) (p<0.001), and there were meaningful differences in both supraspinatus and infraspinatus in muscle thickness within experimental group II (p<0.001). In comparison of change of %RVC between groups, Tthere was a meaningful difference in only posterior deltoid in comparing a change of %RVC between groups (p<0.001). Conclusion: We found that exercise therapy using grasping has a positive effect on shoulder stability muscles such as supraspinatus muscle and infraspinatus muscle and activity of deltoid muscle.

• 한국산학기술학회논문지
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• 제15권8호
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• pp.4853-4862
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• 2014

본 연구는 유아주도 요리활동이 유아의 자기효능감 및 학습흥미도에 미치는 영향을 알아보기 위해 충남에 소재한 민간어린이집 만 4~5세에 재원 중인 34명씩의 두 학급 총 68명을 대상으로 2013년 9월 9일부터 12월 31일까지 실험집단에게는 유아주도 요리활동을, 비교집단에게는 교사주도 요리활동을 실시하였다. 연구결과 첫째, 전체 자기효능감에 있어 비교집단은 약한 증가효과가 있었으나 실험집단은 높은 증가효과를 나타내어 유의미한 차이가 나타났다. 또한 각 하위요인별 인지적 영역, 사회 정서적 영역, 신체적 영역 향상에 있어서도 유아주도 요리활동이 효과가 있는 것으로 나타났다. 둘째, 전체 학습흥미도에 있어 비교집단은 약한 증가효과가 있었으나 실험집단은 높은 증가효과를 나타내어 유의미한 차이가 나타났다. 또한 각 하위요인별 주의집중, 흥미도, 자신감, 성실성, 활동에 대한 관심 향상에 있어서도 유아주도 요리활동이 효과가 있는 것으로 나타났다. 즉, 유아주도 요리활동이 유아의 자기효능감과 학습흥미도에 긍정적인 영향을 미치는 교육활동임을 나타내주었다.

• 한국산학기술학회논문지
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• 제20권4호
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• pp.311-319
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• 2019

본 연구는 경도치매노인을 대상으로 컴퓨터 인지훈련 프로그램이 인지기능, 우울, 생활만족도와 일상생활활동에 미치는 효과를 알아보기 위해 시행되었다. 연구대상자는 요양병원에 거주하는 경도치매노인 32명으로, 무작위 대조군 전후설계를 사용하여 실험군과 대조군으로 16명씩 무작위 할당하고 실험군에는 8주 동안 주 1회, 총 8회 컴퓨터 인지훈련프로그램을 적용하였다. 컴퓨터 인지훈련 프로그램은 CoTras-G를 사용하였으며, 컴퓨터 인지훈련 프로그램의 효과를 알아보기 위해 실험군과 대조군에 사전, 사후 동일하게 MMSE-K, SGDS-K, ELS, BI를 실시하였다. 컴퓨터 인지훈련 프로그램이 미치는 효과에 대한 전 후간 차이 검증은 paired t-test, 중재 후 실험군과 대조군간의 변화량 차이 검증은 Mann-Whitney U 검정을 실시하였다. 그 결과 실험군이 대조군에 비해 중재 후 인지기능(t=-4.39, p=0.001), 우울(t=4.11, p=0.001), 생활만족도(t=-8.53, p=0.000)와 일상생활활동(t=-3.10, p=0.007)에서 유의미한 향상을 보였으며, 실험군과 대조군의 사후 비교결과 인지기능(U=54.00, p=0.005), 우울(U=76.50, p=0.045), 생활만족도(U=56.00, p=0.007)와 일상생활활동(U=59.50, p=0.008)에서 유의미한 차이를 보였다. 따라서 본 연구는 컴퓨터 인지훈련 프로그램이 경도 치매노인의 인지기능, 우울, 생활만족도와 일상생활활동을 향상시키기 위해 활용 가능한 효과적인 프로그램임을 제시한다.

• 한국융합학회논문지
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• 제13권2호
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• pp.39-46
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• 2022

본 연구의 목적은 보조공학 기술을 적용한 가정환경 수정과 낙상 안전 체크리스트를 이용한 과제기반 중재를 함께 적용하는 융복합 접근법이 뇌졸중 환자의 낙상 효능감과 활동 수준에 미치는 효과를 확인하는 것이다. 뇌졸중 환자 41명 대상자(실험군 21명, 대조군 20명)는 실험군과 대조군으로 나누어졌다. 실험군에는 환경수정과 낙상 안전 체크리스트를 활용한 과제기반 중재를 4주간 적용하였다. 대조군에는 가정환경 수정만 실시하였다. 중재 전과 후에 한국형 활동분류카드(Korean Activity Card Sort, KACS), 한국형 낙상효능감 측정도구(Falls Efficacy Scale-Korean version, FES-K)를 이용하여 평가하였다. 실험군과 대조군의 낙상효능감과 활동수준의 변화량은 유의한 차이가 없었다. 실험군과 대조군은 모두 중재 이후에 낙상효능감과 활동 수준이 유의하게 향상되었다. 이러한 연구의 결과를 임상 현장에 적용하여 뇌졸중 환자가 지역사회에서 안전하게 생활하고 적극적으로 참여하는 삶을 유지할 수 있도록 지원할 수 있을 것이다.

• 한국수학교육학회지시리즈E:수학교육논문집
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• 제23권3호
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• pp.785-801
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• 2009

본 연구에서는 제7차 수학과 교육과정 10-나 삼각함수 단원에서 구체적 조작물과 실험을 이용한 건물의 높이 너비를 측정하는 체험수학 활동을 통하여 학생들이 수학수업에 흥미를 갖고 수학의 필요성을 느낄 수 있는 방안을 제시하였다.