http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 구효선(Koo, Hyo-Sun) (검색결과 5 건)
- 무료
- 기관 내 무료
- 유료
-
-
-
구효선(Koo, Hyo-Sun) 백산학회 2006 白山學報 Vol.- No.75
The three factors of economy, politics and culture in a society regulate mutual relation in development process. The fastest of all the factors in change is economic factor that caused by diplomacy. The diplomacy of Silla in 7~8 century become complex. At that time, diplomacy of Silla is changed suddenly because of three kingdoms’ unified war, war between Silla and T’ang and establishment of Balhae. Especially Silla become estranged from T’ang because of war, Silla make progress economic exchange and politic stability through improvement of relation with Japan. The relation of other country is a right of royal own, but it is carried out by the nobility. They take charge of the affair that deliver politic message by sovereign’s message and word of mouth. As Silla’s diplomacy with Japan is seen at word of mouth more then sovereign’s message, ties between the two countries is carried out for actual profit. Diplomatic relation is exchange of human and things at once. A diplomatic mission present to the king things of Kooksin(國信) and Byeolgong(別貢). Kooksin is usual tributary good, Byeolgong is a special present which offered to royal family or prime ministers. Especially Byeolhyunmool(別獻物) is a strategic materials for successful diplomacy, Japan offered cotton, ship and flag to king of Silla, the noble like Kim yu-sin and Kim soon-jeong. But after King Seongdeok period that reopened exchange with T’ang, diplomacy of mission is made private exchange except politic purpose. This change is influenced by the South Sea trade of T’ang. In other words, Silla obtained peacock and spices of India and Indonesia through South Sea trade, they is given to Japan. This fact shows pride of Silla related wide-ranging trade and transformation of mental action influenced by China. Diplomatic action accompany guest treating as well as economic action. It is accomplished by organization under authority of king. In case of Silla, Yeonggakjeon(領客典) is in charge of diplomacy related guest reception, Waejeon(倭典) under Naeseong(內省) is understood in the handicraft authorities that is need at relations with Japan. In case of Japan, gained goods through diplomacy is kept in the coffers of the State like Naejangryo(內藏寮) and Hoogung(後宮) and sold at palace market(宮市). But in case of Silla, historical materials about this fact is not found. Merely, It is supposed that Naeseong played a leading role in giving ceremony to the noble.
-
폴리프로필렌/에틸렌-옥텐 공중합체 블렌드의 기계적 성질 및 웰드라인 물성에 미치는 폴리프로필렌-옥텐 공중합체의 영향에 관한 연구
구효선 ( Hyo Seon Koo ),손영곤 ( Young Gon Son ) 한국고무학회 2011 엘라스토머 및 콤포지트 Vol.46 No.3
이 연구에서는 메탈로센 (metallocene) 촉매로 중합된 에틸렌-옥텐 공중합체를 충격보강제로 사용한 복합폴리프로필렌 (PP)에 상용화제로 프로필렌-옥텐 공중합체의 영향에 관하여 조사하였다. 사용된 프로필렌-옥텐 공중합체는 실험실에서 메탈로센 촉매를 사용하여 중합하였다. 상용화제가 첨가되지 않은 복합 PP의 경우 웰드라인에서 기계적 물성이 매우 낮았는데 상용화제의 첨가에 따라 웰드라인의 기계적 강도가 현저히 증가하였다. 그러나 상용화제가 첨가된 복합 PP라도 웰드라인이 없는 시편에서는 물성개선이 크지 않는 것으로 관찰되었는데, 이는 제조된 상용화제의 분자량이 매우 낮기 때문이었다. 적절한 조건에서 분자량이 높은 프로필렌 옥텐 공중합체를 제조한다면 상용화제로서 효과가 클 것으로 기대할 수 있었다. Effect of poly(propylene-co-octene) as a compatibilizer in toughened polypropylene/ poly(ethylene-co-octene) (EOC) was investigated. The EOCs used were metallocene catalyzed commercial linear low density polyethylene and they are elastomeric materials. The poly(propylene-co-octene) was synthesized by metallocene catalyst in our laboratory to be used as a compatibilizer in PP/EOC blends. PP/EOC blends without compatibilizer shows very low mechanical properties in specimens with weldlines while incorporation of a compatibilizer significantly increases the mechanical properties of specimens with weldlines. However, compatibilized PP/EOC blends does not show increased impact property in a weldline free specimen and it is attributed to low molecular weight of the poly(propylene-co-octene) synthesized in present study. It is expected that the poly(propylene-co-octene) having increased molecular weight provides very good performance as an effective compatibilizer in toughened polypropylene/EOC blends.
-
KCI
스콜라연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
