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 : 최준혁(Choi Jun Hyeong) (검색결과 3 건)
- 무료
- 기관 내 무료
- 유료
-
Photo-induced hybrid nanopatterning of metal oxide via direct imprint lithography
박형호(Hyeong-Ho Park),최대근(Dae-Geun Choi),Xin Zhang,김기돈(Ki-don Kim),최준혁(Jun-Hyuk Choi),이지혜(Jihye Lee),박형호(Hyung-Ho Park),Ross Henry Hill,이응숙(Eung-Sug Lee),정준호(Jun-Ho Jeong) 한국생산제조학회 2011 한국생산제조시스템학회 학술발표대회 논문집 Vol.2011 No.4
A novel ultraviolet (UV)-assisted imprinting procedure that employs photosensitive zirconyl 2-ethylhexanoate is presented for the fabrication of both amorphous and crystalline zirconium dioxide (ZrO₂) nanostructures. Upon annealing at 400 C for 1 h, the lateral shrinkage and thickness shrinkage of ZrO₂ nanostructures were 69.8 and 66.7%, respectively, indicating an isotropic volume loss. During UV irradiation and annealing treatment, the refractive index of UV-irradiated ZrO₂ film is gradually increased by improvement in the packing density and crystallinity of the film. With increasing UV exposure time and annealing temperature, the optical band gap (Eg) of the UV-irradiated ZrO₂ film is red-shifted from 5.745 to 5.265 eV, due to the removal of organic groups and the resultant densification of the film during the photochemical reaction and the heat-induced increase in the crystallinity of the film. These results suggest that the refractive index and optical Eg of ZrO₂ nanostructures could be controlled by tuning the conditions of UV exposure time and annealing treatment. Nanopatterns of ZrO₂, fabricated by direct UV-assisted nanoimprint lithography, are potential candidates for protective coatings for optical mirrors and filters, e.g. high-reflectivity mirrors and broadband interference filters, as well as active electro-optical devices where ordered surface nanostructures are necessary.
-
한국어 웹 정보검색 시스템의 정확도 향상을 위한 연관 피드백 에이전트
백준호(Back Jun Ho),최준혁(Choi Jun Hyeong),이정현(Lee Jung Hyun) 한국정보처리학회 1999 정보처리학회논문지 Vol.6 No.7
Since the existed Korean Web IR systems generally ues boolean system, it is difficult to retrieve the information to be wanted at one time. Also, because of the feature that web documents have the frequent abbreviation and many links, the keyword extraction using the inverted document frequency extracts the improper keywords for adding ambiguous meaning problem. Therefore, users must repeat the modification of the queries until they get the proper information. In this paper, we design and implement the relevance feedback agent system for resolving the above problems. The relevance feedback agent system extracts the proper information in response to user's preferred keywords and stores these keywords in preference DB table. When users retrieve this information later, the relevance feedback agent system will search it adding relevant keywords to user's queries. As a result of this method, the system can reduce the number of modification of user's queries and improve the efficiency of the IR system.
-
방사선 조사 시 혈구 및 장점막에 대한 흑마늘 추출물의 보호효과
정도영(Do Young Jung),최준혁(Jun hyeok Choi),김중선(Joong sun Kim),최형석(Hyeong seok Choi),배민지(Min ji Bae),박원석(Won suk Park),민병인(Byung in Min) 대한방사선과학회(구 대한방사선기술학회) 2016 방사선기술과학 Vol.39 No.1
교육, 의료, 산업분야에서 다양하게 이용되고 있는 방사선은 전신 피폭시 다양한 부작용을 야기한다. 이에 흑마늘 추출물을 이용하여 방사선 피폭으로 발생되는 부작용을 저감화 시키는 방사선방호효과를 확인하였다. 흑마늘추출물을 Sprague Dawley Rat에 일정기간 투여한 후 7, 13 Gy의 X-ray를 조사하여 혈구성분 및 소장조직을 비교 관찰하였다. 실험결과 흑마늘 추출물을 투여한 실험군에서 대조군에 비해 초기 백혈구(p<0.05) 및 적혈구(p<0.05), 혈소판(p<0.05)의 손상이 감소되었으며 소장움이 대조군에 비하여 유의성 있는 생존을 확인하였고 소장 융모의 길이는 정상군에 가깝게 남아있는 것을 확인하였다. 따라서 흑마늘 추출물이 방사선 피폭으로 인한 세포 손상을 줄여주어 방사선방호제로써의 역할을 할 수 있을 것이라 사료된다. The radiation has been utilized in a number of fields, even though the use of plenty cause a variety of side effects. This study was confirmed for radiation protective effects of aged garlic to contribute to the prevention of disasters that are radiation exposure. We studied the Complete Blood cell Count(CBC) and the small intestine after feeding aged garlic extract into Sprague Dawley Rat which irradiated X-ray beam 7 and 13 Gy. Garlic extract was administered to the results in the experimental group showed a notable difference in the CBC of platelets (p<0.05), red blood cells (p<0.05) and early damaged white blood cells (p<0.05). In addition, it was confirmed that experimental group's small intestine crypt is more survival than irradiation group significantly. And experimental group has small intestine villi length almost similar to the normal group. result of the aged garlic study will be able to be of great benefit for the radiation relevant emergency management.
ScienceON연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
