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.

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.

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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염색체 4q21-qter에 대한 페인팅 Probe 제작

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

양서류 표피의 미세구조

金翰華,盧鏞泰,鄭英和,池永得 최신의학사 1977 最新醫學 Vol.20 No.11

The authors observed the ultrastructures of the keratinocytes in the epidermis of dorsal skin of the four species in the Korean amphibia: Bombina orientalis; Kaloula borealis, Rana nigromaculata and Rana rugosa. The results were as follows: 1. Amphibian epidermis consisted of 5 or 6 layers of keratinocytes and were divided into four strata: stratum germinativum (1 cell layer), stratum spinosum (1 or 2 cell layers), stratum granulosum (1 or 2 cell layers) and stratum corneum (1 or 2 cell layers) 2. Many microfilaments and secretory mucous granules developed" during cornification of the keratinocytes in the amphibian epidermis without keratohyalin granules developing in the mammalian epidermis. 3. The keratinocytes of the amphibian epidermis were mostly connected with desmosomes. Hemidesmosomes were found between the basal lamina and the basal face of the stratum germinativum and composite desmosomes between the upper face of the stratum granulosum and the basal face of the stratum corneum. The, surface keratinized cells were connected with zonula occludens in the upper portion and with modified desmosomal elements in the lower portion, 4. The keratinocytes of the amphibian epidermis were different in ultrastructure at each stratum. a. In the stratum germinativum, the keratinocytes were columnar or cuboidal in form. Many mitochondria, microfilaments and ribosomes were found in the cytoplasm. b. In the stratum spinosum, the keratinocytes were cuboidal or polygonal in form, Many microfilaments and ribosomes were found and a few granular and agranular endoplasmic reticulum and Golgi complex developed in the cytoplasm. c. In the stratum granulosum, the keratinocytes were squamous in form and the intercellular spaces well developed. Many microfilaments, ribosomes, secretory mucous granules and pigment granules were found in the cytoplasm. d. In the stratum corneum, the keratinocytes were squamous in form and were filled with microfilaments. A few vacuoles and remnants of cell organelles were seen in the cytoplasm.

2004년 7월 봇돌바다의 썰물, 전류 및 밀물시 수온과 염분 분포

최용규,조은섭,이용화,이영식 한국환경과학회 2005 한국환경과학회지 Vol.14 No.2

Based on the observation on 20, 23 and 26 July 2004, the distributions of temperature, salinity and stratification was investigated in relation to ebb, turn of tide and flood. The results are as follows: 1) The high temperature and low saline water with 23.5-24.0℃ and 32.4~33.0psu existed at Naro Island. 2) The cold surface water below 21.00 and 33.0~33.4psu appeared in the area near Gae Island and Geumo Island. 3) The cold and saline water, below 24.0℃ at the surface and 17.0℃ near the bottom, 32.8~33.8psu at the surface and 33.8~34.0psu near the bottom, existed in Sori Island. These waters were more saline compared to the South Sea Coastal Water with about 31.8psu. This suggests that the oceanic saline water intruded into the Bottol Bada through the area near Sori Island. The stratification appeared during all the observation periods due to a high solar radiation of 22MJ/m², and a weak wind speed of 2.9m/s on the average while the mean speed of wind in July is around 3.9 m/s. It qualitatively suggested that the stratification was maintained during the observation periods because of a high solar radiation, a weak wind speed and intrusion of saline oceanic water.

고요산혈증의 위험인자 : 아산시 지역 주민을 대상으로

김용배,장원기,황보영,김화성,안규동,이병국,이용진,이종은,이준숙,이찬구,이한정,이성수 순천향대학교 2006 Journal of Soonchunhyang Medical Science Vol.12 No.1

Objective : Serum uric acid has now been identified as a marker for a number of metabolic and hemodynamic abnormalities. The aim of this study is to evaluate risk factors which influence hyperuricemia in the citizens of Asan. Method : The study design was cross-sectional and research subjects were 1086 citizens of Asan. General characteristics, cigarette smoking, alcohol consumption, and past history were obtained by interview using a structural questionnaire. Also, we measured height, weight and blood pressure, and serum uric acid of the subjects. Results : The mean serum uric acid level was 5.27 ㎎/㎗ in men and 4.01 ㎎/㎗, in women, In the multiple logistic regression analysis, statically significant risk factors of hyperuhcemia were gender, body mass index, blood lead concentration, and serum creatinine. Conclusion : Our results suggest that gender, body mass index, blood lead concentration, and serum creatinine might be the most important risk factors of hyperurcemia. Education program as well as routine check-up for serum uric acid was highly recommended for the effective prevention of hyperuricemia.

Pd/titania 촉매에 의한 아세틸렌 Cyclotrimerization

정용화,이태진,김기석 한국화학공학회 2004 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.42 No.1

Pd/titania 촉매에 의한 아세틸렌 cyclotrimerization의 반응성과 생성물 분포의 변화를 상압조건하의 373K에서 flow reaction 실험에 의해서 연구하였다. 주요 생성물로서 에틸렌과 벤젠이 얻어졌으나 시간이 경과함에 따라서 촉매의 피독으로 인하여 아세틸렌 전화율이 급격히 감소하였다. 일정한 반응기체 유속(공간속도 4,000hr^(-1))에서 아세틸렌 농도를 50, 25, 12.5 vol%로 감소시켰을 경우 벤젠 생성량은 감소하였으나 촉매의 피독은 완화되었다. 아세틸렌 농도 변화에 대한 벤젠 생성량의 비교에 의해서 벤젠 생성반응이 아세틸렌 농도에 대해 1차 반응임을 확인하였다. 또한 일정한 아세틸렌 농도 (25 vol%)에 대하여 공간속도를 4,000 hr^(-1)에서 6,000 hr^(-1)로 증가시켰을 경우 촉매의 피독이 완화되었으며 벤젠 생성량도 증가하였다. Flow reaction에 의한 아세틸렌 cyclotrimerization에 있어서 촉매 피독을 완화시키고 벤젠 수율을 증대시키기 위해서는 반응기체 흐름의 아세틸렌 농도와 유속의 최적화가 필요해 보인다. 본 연구에 있어서 palladium-titania 계면의 oxygen anion vacancoies와 환원된 titania 표면이 종전의 연구자들 보다 100K 낮은 온도에서의 벤젠 생성에 기여한 것으로 추정된다. Cyclotrimerization of acetylene was studied by means of atmospheric flow reaction at 373 K on Pd/titania catalyst to investigate variations of catalytic reactivity and product distribution. While ethylene and benzene were obtained as the major products, rapid decrease in acetylene conversion resulted from catalyst poisoning with the lapse of reaction time. For a fixed flow rate(space velocity 4,000hr^(-1)), as acetylene concentrations decreased from 50 to 25, to 12.5 vol%, benzene yields decreased, whereas catalyst poisoning was attenuated. Comparison of benzene evolution signals from the variation of acetylene concentrations showed that the rate of benzene formation is first-order in acetylene pressure. In addition, for a fixed concentration(25 vol%) of acetylene, as space velocity increased from 4,000 to 6,000hr^(-1), benzene yields also increased and catalyst poisoning was attenuated. Optimization of acetylene concentration and flow rate may be necessary to accomplish the attenuation of catalyst poisoning as well as enhancement of benzene yield from acetylene cyclotrimerization by flow reaction. It can be deduced from this study that oxygen anion vacancies at palladium-titania interface and reduced titania made contributions toward catalytic activity for benzene formation at the temperature 100 K lower than those reported by previous researchers.

Epidermal Growth Factor(EGF)가 개의 손상된 슬관절 전방십자인대의 치유에 미치는 영향

김용식,정도현,정진화,우영균,임영욱,이화성,권순용 대한정형외과연구학회 2003 대한정형외과연구학회지 Vol.6 No.2