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Enhanced, Parallel Orientation of Liquid Crystal on Phthalimide Substituted Polystyrene Film
강신우,주창하,박찬혁,김태형,강효 한국공업화학회 2019 한국공업화학회 연구논문 초록집 Vol.2019 No.0
We synthesized phthalimide substituted polystyrene (PPH#) series, where # is the molar ratio of phthalimidoyl moiety, by substitution reaction to investigate liquid crystal (LC) orientation behaviors. The PPH# films exhibited good optical transparency in visible light region than polyimide (PI) film, commercialized in display industry. The LC cell made from pristine polystyrene film showed perpendicular orientation with respect to rubbing direction, whereas the LC cells fabricated with PPH# films exhibited parallel orientation when the substitution ratio was more than 20 mol%, respectively. Additionally, long-term stability of the LC cells made from PPH# series were remarkably enhanced as well as ultraviolet stability than those of LC cell made of polystyrene. Therefore, this study contributes to the technology of producing planar and parallel LC orientation on polystyrene derivatives and can be applied to next-generation display industry including flexible display.
국가핵심기반시설 에너지기업에 도입된 BCMS, 일일위험지수와 중대재해처벌법의 관계 연구
강신우,김덕호,정종수 한국재난정보학회 2023 한국재난정보학회 학술대회 Vol.2023 No.11
에너지분야 국가핵심기반시설에서 산업재해 및 업무중단 사고예방을 위해 재해경감활동관리체계(BCMS)에서 일일위험 지수 재난안전관리 프로그램을 자체개발 운용하여 정부의 중대재해 감축 로드맵의 핵심적인 4대 전략 중 하나인 사업장에서 유해위험요인에 대한 자기규율적인 예방관리체계의 확립한 사례를 제시하였다. 이에 대한 신뢰성 검증을 위해 중대산업재해 감축효과에 영향을 미친 사업장의 BCMS, 일일위험지수 및 중대재해처벌법 간의 관계성을 연구한 결과, 제도 간 개념의 관련 성이 높으며, 상호 보완적이고 영향을 미치는 것으로 확인되었다. 따라서 동종 사업장에서 재해경감활동관리체제의 일일위험 지수를 활용한다면 중대재해예방관리에 도움이 될 것으로 기대된다.
바람맞이 울타리 施工物에 의한 山地砂防效果에 관한 硏究
姜信佑 尙志大學校 1983 論文集 Vol.4 No.-
This study has been made to find out more effective way of Vegetation establishment on severely denuded Forest Land from Wild cover wall control regimes. Various environment factors were measured to estimate windcover of different sites. Wind influence on growth of cover Vegetations, 20cm cover wall, 30cm cover wall were analyzed. The Study was conducted on Cut-slopes of road-side having slope condition of 10°∼20°indegrees and 10m in length derived fom slope grading, The main results obtained may be summarized as fallows. Field Experiment includes height growth, survival and coverage analysis of cover Vegetution Alnus Japonica STEUD, Robinia pseudo acacia L., Pinus thunbergil PARL, Arundinella hirta, var, Ciliare, Themoda faponiea-Tanka with 3 wind cover Wall treatments, on 3 slopes (steep.20, Moderate 15°, Gentle 10°) during dry season (1 March∼15october) 1) As a seasonal wind blows to the northeast in the north part of the eastern area, we must select the land for operation of wind cover wall. 2) As a Wind cover wall protects seedlingr with in 30cm in the steep, and seedlings survive slow. But seedling grows well within 10m to the counter direction. 3) Robinia pseudo acasia L. grows well in seedling area and its growth rate was similar to general trees, ant Pinus thunbergii Parl was pressed by rapid completion tree. 4) The growth rate of seedlings has increesed six times irexecution of work in the second year and ground cover by seeding seed has increased one and half times.
山林土壤統에 對한 소나무 현사시나무 造林樹種의 施肥效果에 關한 硏究
姜信佑 尙志大學校 1980 論文集 Vol.1 No.-
This Experimentation aims to study on the characterics of tree growth by forestry land soil system and the effect of applied fertilizer by kind of tree for obtaining basic data on application of fertilizer to forestry land and to further in vestigate the restriction factor of tree growth by soil system for promotion more effective application of fertilizer to foresty area 1.The characteristics of tree growth by soil system showed that tree growth was worst on erosive soil, bad on red, red, and yellow soil and generally good on brown soil. 2.The growth of pinus seems closely related with the content of K20 in the soil and the growth of PH was bad on neutral or alkali soil and good on weak-acid soil in growth greatly depended upon the contene of OM or FN 3.As Hen poplar is a kind of tree requiring for a special soil, its growth required for fertile soil and the content of OM. N. P.205, K20 was propertional to its growth 4.The growth of pinus and Hen poplar was good on the soil containing much sand but bad on the soil containiy much clay