한국 남서해안 영광군 염산 조간대의 퇴적상과 퇴적작용

김여상,이덕성 공주대학교 과학교육연구소 2003 과학교육연구 Vol.34 No.-

본 연구의 목적은 한국 서해안의 영광군 염산 해안에 발달한 조간대에서의 퇴적상과 퇴적작용을 조사하는 것이다. 이 조간대로부터 48개의 표층퇴적물 시료가 채취되었고 퇴적구조물들이 조사되었다. 연구지역의 조간대는 조직과 퇴적구조를 기준으로 니퇴적상, 사질실트퇴적상, 모래퇴적상으로 구분된다. 니퇴적상은 고조선 부근에 분포하며, 매우 불량한 분급과 세립질의 말미부분이 매우 우세한 실트와 이토로 이루어졌다. 퇴적구조는 균질층리, 렌즈상 층리, 얇은 교호층리가 관찰되고 있으나 생물교란작용을 많이 받고 있다. 사질실트 퇴적상은 모래퇴적상과 니질퇴적상 사이의 넓은 지역에 분포하고, 퇴적물은 분급이 매우 불량한 사질실트로 구성되어 있고, 퇴적구조는 얇은 교호층리와 렌즈상 층리가 나타난다. 생물퇴적구조가 풍부하다. 모래퇴적상은 저조선 부근에 분포하며, 분급이 양호하고 조립질 말미부분이 우세한 세립모래로 이루어져 있다. 퇴적구조는 고연흔, 대연흔, 사층리 그리고 평형모래엽리가 있다. 염산조간대의 표층퇴적물 분포의 계절변화는 뚜렷하여 겨울에는 모래가 집적되고, 여름에는 모래퇴적물 위에 니(mud)가 두께 50㎝ 이하로 퇴적된다. 퇴적물 분포의 계절적 변화는 계쩔에 따른 바람의 강도에 의해 야기되는 것으로 판단된다. This research aims to examine the intertidal facies and the intertidal sedimentation in YeomsanCoast at Yeonggwang-gun in the southwestern coast of Korea.. 48 surface sediment samples were taken from the intertidal flat. The intertidal flat is divided into three sedimentary facies based on textures and sedimentary structures ; mud facies, sandy silt facies, and sand facies. The mud facies occurs near the high tide level and consists of very poorly sorted and strongly fine skewed silt and mud. The major sedimentary structures are homogeneous bedding, lenticular bedding, and thinly interlayered bedding, but they are poorly preserved because of strong bioturbation. The sandy silt facies is developed on broad areas between sand facies and mud facies. The sediments are very poorly sorted sandy silt. It is characterized by thinly interlayered bedding and lenticular bedding. Biogenic sedimentary structures are abundant. The sand facies occurs near the low tide level and consists of well sorted and coarse skewed fine sand. The sedimentary structures consist of small ripples and megaripples, cross-bedding, and evenly laminated sand. The seasonal change of surface sediments at Yeomsan intertidal flat is distinctive. The sand is accumulated in winter while mud is accumulated in summer. The muddy sediments overlie the sand sediment and their thickness is than about 50 cm in summer. The seasonal change is thought to be caused by the strength of wave activity.

초등과학 탐구수업 지도자료의 활용 실태

신영준,장명덕,배진호,권난주,여상인,이희순,노석구 한국초등과학교육학회 2005 초등과학교육 Vol.24 No.2

In this study, we had tried to present a plan for improving the actual conditions of practical utilization of teaching material for 6th grade science developed by Ministry of Education & Human Resources Development and distributed to all elementary schools in Korea. Also we presented ways of better utilization of the teaching material after investigating the actual conditions of practical utilization. A survey was made to investigate and collect all data in the major metropolitan cities, the Kangwon, Chungcheong, Honam, and Kyeongsang area, respectively. We surveyed 316 6th grader teachers to investigate the actual conditions of distribution and utilization of teaching material as a general research. In addition, we surveyed 46 teachers to investigate the organization and content of teaching material as a particular research. The results are as follows. First, the teaching material was not approximately transmitted and kept to 6th grader teachers. Second, the utilization guide was not made. Third, it was reported that the thematic divisions of teaching material was a strong point, but the less detailed experiment manual was a weak point. Fourth, the consideration of content difficulties and simplicity was necessary to improve the material. Fifth, additional items should be included in the introductory presentation, convenience of reorganization, activity material causing learning interest, guidance of substitution experiment, and more concrete notice of experiment activity. Finally, there were positive responses of more than 4.0 point of Likert scale (1 to 5 point scale) in detail investigations of thematic items, which could have possibility that the teaching material was helpful to elementary school science field.

Electrical and Boron Diffusion Characteristics in the AS Preamorphized P+ Polysillicon Gate

Sang Jik Kwon,Yeo Hwan Kim,Jong Duk Lee 대한전자공학회 1994 대한전자공학회 학술대회 Vol.1994 No.1

Ginsenoside fractions regulate the action of monocytes and their differentiation into dendritic cells

Yeo Jin Lee,Young Min Son,Min Jeong Gu,Ki-Duk Song,Sung-Moo Park,Hyo Jin Song,Jae Sung Kang,Jong Soo Woo,Jee Hyung Jung,Deok-Chun Yang,Seung Hyun Han,Cheol-Heui Yun 고려인삼학회 2015 Journal of Ginseng Research Vol.39 No.1

Background: Panax ginseng (i.e., ginseng) root is extensively used in traditional oriental medicine. It is a modern pharmaceutical reagent for preventing various human diseases such as cancer. Ginsenosidesd-the major active components of ginsengdexhibit immunomodulatory effects. However, the mechanism and function underlying such effects are not fully elucidated, especially in human monocytes and dendritic cells (DCs). Methods: We investigated the immunomodulatory effect of ginsenosides from Panax ginseng root on CD14⁺ monocytes purified from human adult peripheral blood mononuclear cells (PBMCs) and on their differentiation into DCs that affect CD4⁺ T cell activity. Results: After treatment with ginsenoside fractions, monocyte levels of tumor necrosis factor (TNF)-α, interleukin (IL)-6, and IL-10 increased through phosphorylation of extracellular signal-regulated kinase (ERK)1/2 and c-Jun N-terminal kinase (JNK), but not p38 mitogen-activated protein kinase (MAPK). After treatment with ginsenoside fractions, TNF-α production and phosphorylation of ERK1/2 and JNK decreased in lipopolysaccharide (LPS)-sensitized monocytes.We confirmed that DCs derived from CD14⁺ monocytes in the presence of ginsenoside fractions (Gin-DCs) contained decreased levels of the costimulatory molecules CD80 and CD86. The expression of these costimulatory molecules decreased in LPS-treated DCs exposed to ginsenoside fractions, compared to their expression in LPS-treated DCs in the absence of ginsenoside fractions. Furthermore, LPS-treated Gin-DCs could not induce proliferation and interferon gamma (IFN-γ) production by CD4⁺ T cells with the coculture of Gin-DCs with CD4⁺ T cells. Conclusion: These results suggest that ginsenoside fractions from the ginseng root suppress cytokine production and maturation of LPS-treated DCs and downregulate CD4⁺ T cells.

Ginsenoside fractions regulate the action of monocytes and their differentiation into dendritic cells

Yeo Jin Lee,Young Min Son,Min Jeong Gu,Ki-Duk Song,Sung-Moo Park,Hyo Jin Song,Jae Sung Kang,Jong Soo Woo,Jee Hyung Jung,Deok-Chun Yang,Seung Hyun Han,Cheol-Heui Yun 고려인삼학회 2015 Journal of Ginseng Research Vol.39 No.3

Background: Panax ginseng (i.e., ginseng) root is extensively used in traditional oriental medicine. It is a modern pharmaceutical reagent for preventing various human diseases such as cancer. Ginsenosidesdthe major active components of ginsengdexhibit immunomodulatory effects. However, the mechanism and function underlying such effects are not fully elucidated, especially in human monocytes and dendritic cells (DCs). Methods: We investigated the immunomodulatory effect of ginsenosides from Panax ginseng root on CD14⁺ monocytes purified from human adult peripheral blood mononuclear cells (PBMCs) and on their differentiation into DCs that affect CD4⁺ T cell activity. Results: After treatment with ginsenoside fractions, monocyte levels of tumor necrosis factor (TNF)-a, interleukin (IL)-6, and IL-10 increased through phosphorylation of extracellular signal-regulated kinase (ERK)1/2 and c-Jun N-terminal kinase (JNK), but not p38 mitogen-activated protein kinase (MAPK). After treatment with ginsenoside fractions, TNF-α production and phosphorylation of ERK1/2 and JNK decreased in lipopolysaccharide (LPS)-sensitized monocytes.We confirmed that DCs derived from CD14⁺ monocytes in the presence of ginsenoside fractions (Gin-DCs) contained decreased levels of the costimulatory molecules CD80 and CD86. The expression of these costimulatory molecules decreased in LPS-treated DCs exposed to ginsenoside fractions, compared to their expression in LPS-treated DCs in the absence of ginsenoside fractions. Furthermore, LPS-treated Gin-DCs could not induce proliferation and interferon gamma (IFN-γ) production by CD4⁺ T cells with the coculture of Gin-DCs with CD4⁺ T cells. Conclusion: These results suggest that ginsenoside fractions from the ginseng root suppress cytokine production and maturation of LPS-treated DCs and downregulate CD4⁺ T cells.

Enhanced Production of Epothilones by Carbon Sources in sorangium cellulosum

( Sang Woo Park ),( Sue Hyung Choi ),( Yeo Joon Yoon ),( Dong Hyun Lee ),( Duk Joon Kim ),( Ji Heung Kim ),( Young Kwan Lee ),( Guang Jin Choi ),( Ick Tae Yeom ),( Sang Jun Sim ) 한국미생물생명공학회 2006 Journal of microbiology and biotechnology Vol.16 No.4

Fabrication of Sub-Half Micron PMOS Device

Yeo Hwan Kim,Sang Jik Jwon,KuK Jin Chun,Jong Duk Lee 대한전자공학회 1992 대한전자공학회 학술대회 Vol.1992 No.1

INFLUENCING FACTORS FOR SATISFACTION WITH LECTURES OF NON-DEGREE PROGRAMS: IMPLICATIONS FOR STRATEGIC MARKETING

Sung Hwan Yeo,Kyung Hoon Kim,Yeoung Duk Koo 글로벌지식마케팅경영학회 2015 Global Fashion Management Conference Vol.2015 No.06

Global depression has brought the Korean economy into the period of low growth. The notion of lifetime employment has long crumbled, while economic recession is gradually taking away quality jobs. Furthermore, the average lifespan for the population has neared 100, while baby-boomer retirement is swinging into high gear. The simultaneous inrush of social and economic problems is threatening our wellbeing. However, there has been insufficient amount of research conducted on the factors that influence the satisfaction with lectures in lifelong education designed to address the problems. If we look at the earlier studies, most of them are on the satisfaction with lectures in regular courses. Our society demands that jobs be created for retirees including the baby boomers and that quality jobs be provided for those who want to go back to work after they have withdrawn from previous employment. In this light, the current study aims to bring light on the causal relation between the influential factors and variables involved in the satisfaction of lectures of non-degree programs with a view to solving those problems, and suggests the need to draw up marketing strategy that uses it. Specifically, the purpose and method of this study are as follows. First, to develop variables to be used in this study through in-depth interviews with field staff in the industry and training staff. Second, to identify predisposing factors that influence the satisfaction with the lectures of non-degree programs. Third, to identify the variables mediating predisposing factors and satisfaction with lectures. Fourth, to propose marketing strategy for non-degree programs using the results of the study. As identified through this study, the influencing factors for satisfaction with lectures are physical environment, composition of contents, and instructor ability and attitude, while mediating variables are interaction and immersion in lectures. If these factors are reflected in education, a higher level of satisfaction with lectures will be ensured for business starting youths, retirees, and those who want to have some other job after withdrawing from their previous ones. Educational institutions will be able to use it in ensuring stabler recruiting of trainees and establish a more efficient guidance and marketing strategy. Reflecting the results of the study in education will contribute to heightening educational sustainability, social sustainability, and economic sustainability.

급성 대상포진 관련 통증과 포진 후신경통의 임상상과 신경 차단술

성덕현,김상용,이강우,이일수,여운철 大韓再活醫學會 2000 Annals of Rehabilitation Medicine Vol.24 No.1

폐타이어와 토목섬유에 의한 지반보강효과의 비교연구

윤여원(Yeo Won Yoon),김방식(Bang Sik Kim),서덕성(Duk Sung Seo) 한국지반공학회 2004 한국지반공학회논문집 Vol.20 No.5