석고판 경량 간막이 벽체의 구성방법에 따른 차음성능에 관한 연구

이태강,정진연,김선우 대한건축학회 2005 대한건축학회논문집 Vol.21 No.2

This paper aims to investigate the characteristics of partition walls which are light weighted, dry walls of gypsum boards, These partition walls are prospected to be new ones to cope with M.C.(Modular Coordination), flexibility, non-bearing system, substitution to masonry works. The number of tested partition walls are 16 which are varied with core materials, depth and construction methods. These partitions of sound insulation characteristics of light weighted partitions were tested in reverberation room. And compared with 0.5B and 1B masonry wall of sound insulation performance, the partitions are evaluated by R_w performance. The sound insulation performance of the gypsum board partitions are as good as the performance of masonry wall.

Risperidone이 백서의 억제된 자발적 교대행동에 미치는 영향

이기철,이정호,김진규,정홍경,천강훈,류정환,최영민,전성일 대한생물치료정신의학회 1998 생물치료정신의학 Vol.4 No.2

Objectives : Recently, some case reports have shown that risperidone is effective to refractory obsessive-compulsive disorder. Possible explanations for efficacy of risperidone in refractory obsessive-compulsive disorder maybe due to that it is both serolonin and dopamine receptor antagonist. On the basis of serotonin-dopamine interaction hypothesis, a biological etiology of obsessive-compulsive disorder, the effect of risperidone was evaluated to the suppressed spontaneous alternation behaviour of animal model of obsessive-compulsive disorder in rats. Methods : The apparatus for spontaneous alternation behaviour was a black plexiglas T-maze with distinctive black and white goal boxes. Black gullotine doors separated the start box and the goal boxes from the main body of the T-maze Small cups were placed in the corners of both goal boxes(all arms measured 50×10cm) 24 hours prior to experiment, rats(Spraque-Dawley) were food-deprived. The food-deprived rats were put into T-maze, in which both goal boxes were baited with small amounts of chocolate milk. Each rat was given 2 set of 7 trials during which it was placed in the start box and allowed to choose the one of the goal boxes for checked. After baseline of the number of choices of spontaneous alternation behaviour was stabilized, the pontaneous alternation disrupted by nonselective 5-HT agonist, 5-MeODMT (1.25mg/kg/IP). The experimental animals were stratified into 5 groups, fluoxetine(10mg/kg/IP), risperidone(0.1mg/Kg/IP), haloperidol(0.1㎎/Kg/IP), fluoxetine(10mg/Kg) with haloperidol(0.1 mg/Kg), and saline(0.5cc/IP) control group. Each drugs were injected for 21 days as a chronic treatment. The protective effects were evaluated on the nest day of discontinuation of the each drugs among 5 groups. Results : 1) After 21 days of the drug treatment, the risperidone group and the fluoxetine group showed significant difference from the haloperidol group and the saline control group on the protection of the 5-MeODMT induced suppression of spontaneous alternation behaviour. 2) The fluoxetine group and fluoxetine with haloperidol group showed significant difference between before and after treatment in the protection of 5-MeODMT induced suppression of spontaneous alternation behaviour. The risperidone group also showed significant difference between before and after treatment in the protection of 5-MeODMT induced suppression of spontaneous alternation behaviour, but the protective effect of risperidone was superior to fluoxetine. Conclusion : These findings suggest that both risperidone and fluoxetine have a favorable effect in the protection of 5-MeODMT induced suppression of spontaneous alternation behaviour. We think that risperidone can be possible alternatives to SSRIs in the treatment of refractory obsessive-compulsive disorder in clinical situation.

만경강 및 동진강 수계의 BOD에 의한 수질 평가

이종식,정구복,김진호,윤순강,김원일,신중두 한국환경농학회 2004 한국환경농학회지 Vol.23 No.2

새만금 유역의 수질관리를 위한 기초자료 확보를 목적으로 만경강 및 동진강 유역의 개황과 각 하천 본류의 수질에 미치는 지천들의 영향을 평가하기 위하여 2001년 6월부터 2002년 9월까지 동절기를 제외한 영농 기간동안 매월 1회 주요 지천들의 본류 유입 전·후의 BOD 변화를 조사한 하였다. 만경강 수계는 미처리된 축산폐수로 오염된 익산천 유입 후 BOD가 증가하였으며, 전 조사 기간동안 평균 5.4 mg/L이었다. 만경강 수질에 큰 영향을 주는 익산천은 왕궁천과 합류되기까지 평균 BOD는 5.4 mg/L로 만경강 본류의 평균 농도와 같은 수질을 보였으나 인근 축산단지로 부터의 축산폐수 유입으로 익산천 하류의 BOD는 평균 13.6 mg/L로 수질이 악화되었다. 동진강 수계는 조사기간 동안 평균 BOD가 2.8 mg/L로 만경강 보다 양호한 수질을 보였으며, 생활하수 및 공장폐수로 오염된 정읍천 유입으로 동진강 하류의 수질은 평균치 보다 다소 높은 3.5 mg/L을 나타냈다. 또한 만경강 및 동진강 수계의 연차별 수질은 2001년도에 비해 2002년도에 BOD가 다소 낮은 경향을 보였다. Biological oxygen demand (BOD) as a stream water quality indicator was monitored monthly in the Mankyeong and Dongjin river basins from June 2001 to October 2002 to evaluate water qualified as well as to get the information on the water quality management strategy in Semangeum reclamation areas. BOD in the Mankyeong river was 5.4 mg/L in average during the survey and increased after the inflow of Iksan tributary, which was contaminated with livestock wastewater. BOD of Iksan tributary was maintained at 5.4 mg/L before joining the Wanggung tributary, however, that in the downstream was increased to 13.6 mg/L in average due to the inlet of the livestock wastewater. Meanwhile, BOD of Dongjin river was the average of 2.8 mg/L during the survey periods but it showed 3.5 mg/L when Jungeup tributary which was contaminated with sewage and industrial wastewater joined into the main stream. BOD in both Mankyeong and Dongjin rivers decreased in 2002 as compared to that in 2001.

산모혈과 제대혈에서 연농도에 관한 조사

이덕희,문종국,배강우,이용환,김진하,박강원 大韓産業醫學會 1996 대한직업환경의학회지 Vol.8 No.3

This study was conducted to evaluate the blood lead levels in 141 pregnant women who were not occupationally exposed to lead and their umbilical cord, and to identify some differences in blood lead levels by living area. The subjects were all delivered at St. Benedict Hospital in Pusan and the blood lead levels were measured by graphite furance atomic absorption spectrophotometer. The summarized results were as follows. 1. The geometric mean lead levels in maternal and cord blood were 8.0±1.8μg/dl, 5.0±0.6μg/dl respectively. 2. Lead levels in maternal(8.7±1.7μg/dl) and cord blood(5.4μ±0.7μg/dl) of industrial area(n=24) were higher than residential area(n=124) which were 7.9±1.7μg/dl and 5.0±0.6μg/dl respectively(p<0.05). 3. Maternal blood lead concentration was significantly correlated to cord blood lead concentration(r=0.6090, p<0.001), but other variables(maternal age, paternal smoking, birth weight, etc) were not correlated.

이동 소하천의 수온,pH,부유물질량,용존산소,생화학적 산소요구량의 특성

이간석,연규방,박진기,나상일,박종화 충북대학교 농업과학기술연구소 2012 農業科學硏究 Vol.28 No.1

본문참고

농업유역 소하천의 T-P,T-N 모니터링

이강석,연규방,박진기,나상일,박종화 충북대학교 농업과학기술연구소 2012 農業科學硏究 Vol.28 No.1

본문참고

협동학습을 활용한 초등학교 인성교육의 활성화 : 도덕과 교육을 중심으로

조강모,이인재,정남진 광주교육대학교 초등교육연구소 2000 初等敎育硏究 Vol.15 No.1

The purpose of this study have two as follows; One is to examine the theoretical backgrounds and some effects of cooperative learning and the other is to prove the usefulness of cooperative learning in moral teaching and to provide an effective model of moral teaching in order to develop three aspects of morality. Cooperative learning is the instructional use of small groups so that students work together to maximize their own and each other's learning. Within cooperative activities individuals seek outcomes that are beneficial to themselves and beneficial to all other group members. Cooperative efforts result in participants striving for mutual benefit so that all group members gain from each other's efforts, recognizing that all group members share a common fate, knowing that one's performance is mutually caused for achievement. It is founded that cooperative learning is one of effective instructional processes to develop student's character. It gives students regular practice in developing important social and moral competencies, such as the ability to take perspective, work as a part of a tem, and appreciate others, at the same time that they are learning academic materials. Cooperative learning also contributes to the development of cohesive and caring classroom community by breaking down inter-personal distrust and over-competition and integrating every student into the small social structure of the cooperative group. We proposed the integrated model of moral teaching that could be helpful to build moral knowing, moral feeling, moral acting of students.

C6 glia 세포에서 유도성 Nitric Oxide Synthase 유전자 발현조절에 관한 연구

배진영,허강민,배소현,박지선,이충재,이재흔,석정호 충남대학교 의과대학 의학연구소 2003 충남의대잡지 Vol.30 No.1

To investigate transcriptional regulation of iNOS gene by LPS and cytokines, the production of NO, expression of iNOS mRNA and protein, binding activity of nuclear factor-kappa B(NF-kB), and promoter activity of iNOS gene were examined in rat C6 glial cells. LPS, interferon-gamma(IFN-γ), and tumor necrosis factor-alpha (TNF-α) stimulated the production of NO, which was increased synergistically by co-treatment. By the treatment of LPS, iNOS mRNA expression was initiated at 1 h, markedly increased by 3 h, and decreased gradually afterward. iNOS mRNA expression was markedly enhanced by mixture of LPS, IFN-γ and TNF-α. iNOS protein synthesis was increased by the treatment of mixture LPS and cytokine mixture. Treatment of LPS stimulated NF-kB activation, and the activation reached to the maximum level at 30 min, and the treatment of mixture of LPS and cytokines increased the activation. To determine the effect of NF-kB binding activity on iNOS promoter activation, CAT assay was performed. iNOS promoter activity was increased by the treatment with LPS for 5.5 h, and further increased by the combined treatment with LPS and cytokines. These results suggest that NF-kB activation by LPS and cytokines may play a significant role in the induction of the iNOS gene.

우리나라 중부지방의 시설원에 토양 및 지하수 환경

김진호,이종식,김원일,정구복,윤순강,정연태,권순국 한국환경농학회 2002 한국환경농학회지 Vol.21 No.2

연구대상 시설재배지 토양의 물리성은 대부분이 모래의 비율이 높은 sandy loam이나 loam으로 투수성이 양호할 것으로 판단되나, P2나 S1에서는 미사의 비율이 높은 미사 loam으로 투수성 및 통기성이 상대적으로 낮은 것으로 판단된다. 토양의 화학성은 EC의 경우 표토의 대부분이 기준치에 도달하거나, 초과하는 경향이었고, 심토의 경우는 기준치 이하로 조사되었다. 또한 유기물 함량은 적정수준 2~3%보다 조사 대상 지점의 대부분에서 상회하였고, 심토의 일부분도 이 수준을 넘는 곳도 있었다. 조사 대상 지역의 수질 특성 중 시설재배지 지하수의 가장 중요한 염류 지표인 EC는 연평균 0.48 dS/m로 농업용수로서 작물에 미치는 영향은 없는 것으로 판단되나, 수질오염지표인 질산성 질소의 경우 19.1 mg/L 로 농업용수 수질 기준인 20 mg/L에 근접한 수준을 나타내었다. 특히 조사 대상 지점의 36.4%가 수질 기준을 초과하는 것으로 나타났다. 지하수중의 이온의 양과 영양염류의 양을 간접적으로 나타내는 전기전도도인 EC는 양이온인 경우 Mg^(2+), Ca^(2+), Na^+, K^+와 정의상관이 있었으며, 특히 2가 양이온인 Mg^(2+)와 Ca^(2+)간에는 고도의 정의상관을 보이고 있었다. 또한 EC와 음이온간에는 NO_3^-, Cl^-, SO_4^(2-), PO_4^(2-)와 상관을 보이고 있었다. 지하수의 오염지표인 NO_3-N의 경우에는 COD를 제외한 모든 이온들과 상관을 보이고 있었다. 특히 SO_4^(2-), Cl^-, Na^+, Ca^(2+), Mg^(2+)와는 고도의 정의 상관을 보여주고 있다. 이는 NO_3-N는 EC와 함께 지하수오염의 중요한 지표중의 하나임을 보여주고 있다. The objective of this study was to know the qualities of soil and shallow groundwater in plastic film house fields around Central Part of Korea. The study was conducted at 11 sites in Suweon, Hwasung, Pyungtaek, Yongin, and Chuncheon through May to August in 1999. Soil textures of plastic films house were mainly sandy loam or loam. Electric conductivity and organic matter content of surface soils mostly exceeded the critical levels for crop production. Average concentration of N0_3-N in the shallow groundwater was 19.1 mg/L, and it reached almost the limiting level of agricultural groundwater quality (20 mg/L). Moreover about 36% of survey sites exceeded the limiting level of agricultural groundwater quality. Sulfate concentrations also at some sites exceeded agricultural groundwater quality limit level (50 mg/L). Nitrate-N, one of the most important factors in the groundwater quality, had positive correlations with other ions in groundwater.

비디오 흉강경을 이용한 자연성 기흉 수술에서 재발 방지 방법에 대한 연구

박성강,이석기,임진수,최형호 朝鮮大學校 附設 醫學硏究所 2004 The Medical Journal of Chosun University Vol.29 No.1

Background : This study aims to assess the efficacy of VATS pleurodesis in the treatment of spontaneous pneumothroax. Method and material : 131 consecutive patients who underwent videoUassisted thoracoscopy (VATS) bullectomy and pleurodcsis procedure in Chosun Uniservity Hospital between May 1999 and June 2003 were included in the study. Theses patients were performed the VATS with Talc pleurodesis (Group A, n=72), VATS with Doxycycline pleurodesis (Group B, n=36), and VATS with reinforcement by absorbable mesh (Surgicel_(R)) and fibrin glue (Group C, n=23). The follow-up period was from 4 months to 30 years. Result: The patient's population consisted of 117 men and 14 women, and the mean age of the patients was 25.6 years. Recurrence rate was 1.4% ( 1 of 72 patients) in group A, 5.6% (2 of 36 patients) in groug B and 0% (0 of 23 patients) in group C. The median removal period of drainage chest tube was 3.3 days. Conclusion : Careful surgical technique is fundamental in reducing early air leakage and recurrence. Moreover, the covering of the suture area with an absorbable mesh and the fibrin glue is safe and effective method with an acceptable recurrence rate.