특성불안이 높은 성인과 낮은 성인에서 알코올이 정신운동성 수행과 주관적 평가에 미치는 영향

용화영,윤보현,윤진상 大韓神經精神醫學會 1996 신경정신의학 Vol.35 No.5

Objectives : The purpose of this study was to evaluate effects of alcohol on psychomotor performance and subjective assessments in normal adults with high and low trait anxiety. Methods : The subjects consisted of 11 men in each group were tested with two doses of alcohol(0.25g/㎏ and 0.75g/㎏). Blood alcohol concentration(BAC), psychomotor performance(critical flicker fusion threshold, CFFT ; choice reaction time, CRT) and subjective assessment were measured at pre-alcohol baseline and 20, 40, 80, and 160 minutes after intake of alcohol. Results : 1) There was no significant difference in BACs between two groups at any time points after intake of each dose of alcohol. 2) After intake of 0.25g/kg alcohol, high anxiety group, compared to low anxiety group, reported less anxious and more relaxed feelings. In psychomotor performance test, however, there was no significant difference between the two groups. 3) After intake of 0.75g/kg alcohol, CFFT was increased in high anxiety group while it was decreased in low anxiety group. In subjective assessment, only high anxiety group tended to show more positive response. Conclusion : These results imply that alcohol may be more beneficial in individuals with high trait anxiety than those with low trait anxiety in terms of objective performance and subjective feelings. Furthermore, these suggest that the alcohol benefits might contribute to drinking more alcohol and frequently in individuals with high trait-anxiety.

특정 염색체 부위에 위치하는 유전자 발굴 - 신경계 발달에 관련된 유전자

박선화,김창미,정혜선,전용혁,김현 대한해부학회 1997 Anatomy & Cell Biology Vol.30 No.2

65세 이상의 노령층에서 고지혈증의 위험요인

김용배,장원기,황보영,김화성,안규동,이병국,이용진,김세훈,김승수,김승훈,김영록,김웅빈,이성수 순천향의학연구소 2006 Journal of Soonchunhyang Medical Science Vol.12 No.1

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기업의 사회 공헌 활동 우선 순위 결정에 관한 연구

이용화 忠州大學校 2009 한국교통대학교 논문집 Vol.44 No.-

This paper reports on a priority decision making model analysis in order for program directors who are in charge of Corporate Social Contribution to make the optimal decision. This empirical analysis focuses on discovering the most significant area among current various programs of Corporate Social Contribution Activities. The Analytical Hierarchy Process (AHP) is employed to test the priority preference. More specifically, it attempts to demonstrate how the priority decision making model helps providing better choices in Corporate Social Contribution Activities practices. The priority preferences of Corporate Social Contribution Activities programs among corporate social contribution practitioners, PR professors and NGO activists are examined. In conclusion, the priority decision making model for Corporate Social Contribution Activities programs should be integrated as the key part of corporate strategic plan. Moreover, it should be considered as a part of overall social welfare including environmental preservation.

염색체 4q21-qter에 대한 페인팅 Probe 제작

박선화,안희성,전용혁 대한해부학회 1995 Anatomy & Cell Biology Vol.28 No.6

銅. 니켈 黃酸鹽廢棄物의 處理

黃龍吉,李相和 동아대학교 환경문제연구소 1980 硏究報告 Vol.4 No.1

廢棄되는 黃酸鹽 試料를 處理한 結果 1. 이 試料는 主로 NiSO₄와 FeSO₄의 黃酸鹽이었으며 이들은 750℃에서는 α-Fe₂O₃만 X-線으로 確認되고 1,000℃에서는 NiO와 Fe₃O₄가確認되었다. 2. 黃酸鹽 溶液中의 鐵을 除去하기 위해서 酸化시켜 加水分解한 結果 pH 3~4.5에서 鐵이 赤褐色의 水酸化鐵로 加水分解가 되었고 이때 水酸化鐵中에 含有되어 있는 Ni은 1.2%에 달했다. 3. Eluent LIX-64N을 溶液의 부피와 대등한 부피를 취해서 Ni과 Cu를 抽出했을 경우의 pH는 7以上에서 抽出이 잘 되었고 pH 8.5~10까지의 條件에서 Resine을 處理했을 경우에 Raffinate中에 Ni 含量은 1.2gr/ℓ 程度 存在했으며 Extraction rate는 約 98%에 달했다. The following results have been obtained by treating samples of used sulfate. (1) The X-ray diffraction analysis has shown that this sulfate sample consisting mainly of NiSO₄ and FeSO₄ gives α-Fe₂O₃ at 750℃ and produces NiO and Fe₃O₄ at 1,000℃. (2) When the sample is oxidized and then hydrolysed to remove iron in a solution of sulfate, it has been found that iron turns into reddish-brown hydroraded iron. When this occurs, the Ni content of hydrated iron has reached 1.2%. (3) It has been shown after taking eluent LIX-64N the volume of which is equivalent to the volume of solution that the extraction for Ni and Cu can be done effectively at pH values of 7 or more and that under that condition of pH range from 8.5 to 10 the Ni content of raffinate is about 1.2gr/ℓ, when resine is treated, and extraction rate has been obtained to be nearly 98%.

벤처기업 가치평가에 관한 이론적 고찰

정용화 京畿專門大學 2001 京畿專門大學 論文集 Vol.- No.29

With the boom of Venture Business, many people have crowed to stock market(KOSDAQ). Especially, the boom of Internet has brought the change of the rule in industry since 1990's. The Internet is probably the most sweeping and potentially powerful medium. Investors have focused on the potential growth of these firms rather than the current output. Maximizing shareholder's value is the most substantial purpose of any corporate. But What's their real value? Unfortunately it's not easy to develop a valuation model that exactly explains Internet stock's unreasonably high prices in spite of poor financial performance. And then the systematic model to valuate the Internet firms is not suggested so far. So many people argued that financial information and traditional valuation method is meaningless in the 'New economy environment'. The purpose of this study is to find out the factors that cause value of Venture Business and to propose a new method of evaluating Venture Business. I derived the appraisal standards based on the literatures about the factors affecting performance of Venture Business and also on the credit analysis theory.

골다공증의 위험인자 : 아산시 지역 주민을 대상으로

김용배,장원기,황보영,김화성,안규동,이병국,이용진,이남수,이상건,이상범,이상우,이선정,이성수 순천향대학교 2006 Journal of Soonchunhyang Medical Science Vol.12 No.1

Objective : As the average lifespan of human increases, osteoporosis and osteoporosis-related fractures have become major health care problems. Despite recent advances in medical treatment, few studies have assessed the recognition of osteoporosis in general adults. This study examined the recognition of osteoporosis and analyzed the relating factors. Method : A population-based sample of 1086 adults in Asan-city, Korea was investigated with questionnaires and height, weight, Information regarding the general characteristics(gender, age, economic state), lifestylef exercise, smoking, alcohol),medical history(progestin, GH, steroid, calcitonin, PTH), demographic parameter, obesity, stress, and family history was collected through an interview using a structural questionnaire. The level of obesity was measured by the body mass index(BMI). BMD(Bone mineral density) at the lumbar spine and femoral neck was measured by dual energy X-ray absorptiometry. Osteoporosis was considered to be T-score below -2.5. Results : The prevalence of osteoporosis increased progressively with age, decreased with BMI and predominant in women by the result of x^(2) -test, T-test. Age, weight, BMI were significantly correlated with osteoporosis by the result of Pearson correlation ana1ysis(P<0.05). And age, gender, BMI, family history of osteoporosis were proved to be significant risk factors of osteoporosis by the result of multiple logistic regression(P<0.05). Conclusion : These results suggest that age, gender, BMI might be the most important risk factors of osteoporosis. And the history taking about family history of osteoporosis is helpful for diagnosing osteoporosis.

Poly(2-hydroxyethyl methacrylate-co-γ-methacryloxypropyl triethyl silane) 및 Poly(2-hydroxyethyl methacrylate-co-γ-methacryloxypropylmethyl bistrimethyl siloxysilane)의 반응성과 열적 성질

성용길,정태화,이상영 동국대학교 1986 論文集 Vol.25 No.-

Hydrophilic poly(2-hydroxyethyl methacrylate) has been accepted as biocompatible material for medical applications. Some of its relatively poor physical property are still remained as problems to be improved. In order to improve its physical property, new copolymers of 2-nhydroxyethyl methacrylate(HEMA) with silane monomers have been developed and synthesized. The silane monomers are γ-methacryloxypropyl triethyl silane(MPTS) and γ-methacryloxypropyl methyl bistrimethyl siloxysilane(MPMBSS). The compositions of unreacted monomers in the copolymers were separated and determined by the intensity of each peak by gas chromatographic analysis. The monomer reactivity ratios determined by the Kelen-Tu¨dos method are as follows; r_1=0.80 and r_2=0.71 for poly(HEMA-co-MPTS), r_1=1.22 and r_2=0.21 for poly(HEMA=co-MPMBSS). The tendency of alternating copolymerization and the relative reactivty of MPTS and MPMBSS with HEMA were investigated. The Q and e values were also calculated by the Alfrey-Price equation. The synthesized monomers and copolymers were identified by infrared spectroscopy and nuclear magnetic resonance spectroscopy. The thermal properties of the copolymers were also measured by thermogravimetry and differential scanning calorimetry.

관상동맥 질환에서 CD14 유전자형에 따른 세균 및 Heat Shock Protein에 대한 반응의 차이

한주용,최수연,조현주,김화평,강현재,구본권,김남중,김효수,손대원,오병희,박영배,최윤식 대한감염학회 2007 감염과 화학요법 Vol.39 No.1

Background : CD14 is the receptor for lipopolysaccharides and heat shock protein (HSP), which has been suggested being associated with increased risk of coronary artery disease (CAD). We investigated whether the response to infectious agents or HSP is different according to CD14 polymorphism in Koreans. Materials and Methods : Antibody titers to Helicobacter pylori, Chlamydia pneumoniae, and human HSP60 (hHSP60) were measured in 48 patients with stable CAD and in 41 healthy controls by ELISA. CD14 genotype was determined by PCR and high-sensitivity C-reactive protein (hs-CRP) was measured. Results : Seropositivity to C. pneumoniae and H. pylori, and antibody titer to hHSP60 were not significantly associated with the presence of CAD. CD14 genotype distribution was 31 TT (35%), 43 CT (48%), and 15 CC (17%). To compare the response to the infectious organism and hHSP60, we divided study population into 3 groups; CAD patients with non-TT genotype (group I, n=30), CAD patients with TT genotype (group II, n=18), and normal controls (group III, n=41). Seropositivity to C. pneumoniae and H. pylori, and antibody titer to hHSP60 were not significantly different among 3 groups. Though hs-CRP level was significantly different among 3 groups, post-Hoc analysis showed that hs-CRP level was not significantly different between group I and group II (group I: 1.6[1.1-3.5] mg/L and group II: 0.35[0.1-2.0] mg/L). Conclusions : This study suggests that the inflammatory responses to infectious organisms and HSP do not differ according to the CD14 genotype in Koreans. 목적 : 만성적인 세균 감염이나 자가 면역 반응이 동맥경화와 연관되어 있다는 주장이 제기되어 왔다. CD14은 lipopolysaccharides (LPS)와 heat shock protein(HSP)의 수용체로 C(-260)→T 다형성이 관상동맥 질환의 위험과 관련되어 있다고 제안되어 왔다. 본 연구에서는 한국인에서 CD14 다형성에 따른 LPS와 HSP에 대한 반응성을 염증표지자를 측정하여 살펴보고자 하였다. 재료 및 방법 : 안정형 관상동맥 환자 48명과 정상 대조군 41명을 대상으로 Chlamydia pneumoniae, Helicobacter pylori 항체 및 인체 HSP60 (hHSP60) 항체 역가를 enzyme-linked immunosorbent assay (ELISA) 방법으로 측정하였다. CD14 유전자형은 중합효소연쇄반응을 이용하여 결정하였고 hs-CRP를 측정하였다. 결과 : C. pneumonias 및 H. pylori 항체 양성 여부 및 항체 역가, 그리고 hHSP60에 대한 항체 역가는 안정형 관상동맥 질환의 유무와 유의한 상관관계는 없었다. CD14 유전자형의 분포는 TT 30명(39%), CT 31명(40%), 그리고 CC 16명(21%)이었다. 관상동맥 질환 군에서 TT 유전자형은 38%, 대조군에서는 32%로 TT 유전자형과 관상동맥 질환의 유무와는 유의한 상관관계가 발견되지 않았다(P>0.05). CD14 유전자형에 따라 C. pneumonias와 H.pylori 감염 및 hHSP60에 따른 반응에 차이가 있는지 여 부를 알아보기 위해, 관상동맥 질환 군을 다시 TT 유전자형 군과 non-TT 유전자형 군으로 나누어, 전체적으로 세군에서 항체 양성률과 역가를 비교하였다(I군: CD14 TT 유전자형을 가진 안정형 관상동맥 환자, II군: CD14 TT 유전자형을 가진 안정형 관상동맥 환자, III군: 정상 대조군). 세 군에서 C. pneumonias와 H. pylori 항체 양성률 및 hHSP60 항체 역가에는 유의한 차이가 없었다. 세 군사이에 hs-CRP 값에 유의한 차이가 있었지만, post-Hoc분석에서 II군의 hs-CRP 값이 I군에 비해 유의하게 높지는 않았다(0.35 [0.1-2.0] mg/L in group II vs. 1.6 [1.1-3.5]mg/L in group I, P>0.05). 결론 : 본 연구는 한국인에서 CD14 유전자형에 따라 LPS나 HSP에 대한 반응이 유의하게 다르지 않음을 시사한다.