http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
이경희,유위량,한현석,부진효,이순보,곽현태 성균관대학교 기초과학연구소 1998 論文集 Vol.49 No.-
The interaction of CO with W(110) surface was investigated through LEED, TDS, and photoelectron spectroscopy using synchrotron radiation under UHV condition. After CO saturation at RT, two desorption states, called α and β , were observed at about 400 and 1150 K in thermal desorption spectra, respectively. The kinetics of 3-CO followed the first order kinetics, indicating the existence of molecular CO on W(110) surface. This is contrary to the previous results. The O 1s BE(binding energy) of CO adsorbed on W(110) surface at room temperature was 529.9 eV. On the other hand, the O 1s BE of β-CO after heating to 900 K was different from that of oxygen adsorbed W(110) surface, suggesting a different adsorption state. According to the UP valence band spectra, we observed two peaks at near -10.7 eV (4σ) and -7.0 eV (5σ+1π), indicating the molecular adsorption of CO at room temperature. Furthermore we could see the 4σ peak at the various photon energy and elevated temperatures. Comparing the energy separation, Δ(4σ-1π) , between 4σ and 1π UP peaks of chemisorbed CO, we found that an increased separation reflects an decreased C-O bond strength. Therefore on the basis of TDS and photoelectron spectroscopy, we could suggest that β state of CO on W(110) may not be dissociated and has an adsorption geometry of lying-down mode.
가토에서 수산화인회석과 냉동건조탈회 동종골의 혼합이식에 관한 실험적 연구
한보경(Boo Kyung Han),윤옥근(Ok Guen Yoon),김종렬(Jong Ryunl Kim) 대한구강악안면외과학회 1997 대한구강악안면외과학회지 Vol.23 No.3
Recent develompent of oral and maxillofacial surgery has taken an interest tn the regeneration of facial bone defects. For the reconstruction of bony defects, autogenous bone grafts have been widely used. However, there are some clinical problems ; the morbidity of donor sites, resorption of autogenous bone graft and the availability of the proper form and size. The purpose of this study is to find the proper filling materials for the bone defects. The present study was designed to evaluate the roles and regenerating capacity of maixture of freeze-dried demine-ralized allogenic bone and hydroxylapatite. Fifteen adult New Zealand white rabbits were used as the experimental animal. Four trephine defects were made by drilling on the parietal bone of each rabbit The size of each defects was 8×8mm In first group, the defect was filled with freeze-dried demineralized allogenic bone and hydroxylapatite. The defect in second group was filled with autogenous bone chip only. The third group was filled with autogenous bone chip and hydroxylapatite. The fourth group was filled with freeze-dried dimineralized allogenic bone only. The results were carefully examined grossly and micorsocopically from the 2 weeks to 12 weeks postoperatively. The following results were obtained ; 1. In the case of the graft with autogenous bone chip only, new bone formation was more active than any other groups. 2. In the case of the graft with combination of freeze-dried demineralized allogenic bone and hydroxylapatite, new bone formation was similar to the case of autogenous bone and hydroxylapatite mixture. 3. In the case of the graft with freeze-dried demineralized bone, new bone formation was observed, but less than the other groups. And the time of new bone appeared was later than the other groups. A combination of freeze-dried deminearalized allogenic bone and hydroxylapatite plays an effective role in forming new bone. The results of this study may suggest the possible usage of the mixture of freeze-dried allogenic bone and hydroxylapatite as an alternative to autogenous bone in maxillofacial orthopedic surgery.
Han, Kyeung-Sik,Jung, Jin-Kyo,Park, Kyung-Hee,Lee, Sun-Won,Saeng Boo Korean Society of Applied Entomology 2000 Journal of Asia-Pacific Entomology Vol.3 No.2
Sex pheromone composition, mating behavior, and field trapping were analyzed for the peach fruit moth, Carposina sasakii(Matsumura) to develop a monitoring system with its sex pheromone. The upwind flying response of males to female was the most frequent at 4th to 5th hr after lights-off. The highest mating rate was seen at 5th hr after lights-off. The extract of female abdoominal tip was analyzed with gas chromatography and proved to have two compounds, (Z)-7-eicosen-11-one and (Z)-7-nonadecen-11-one. In field-grapping, however, a lure containing (Z)-7-eicosen-11-one only showed the highest attractivity.
Han, Kyeung-Sik,Jung, Jin-Kyo,Park, Kyung-Hee,Lee, Sun-Won,Boo, Kyung-Saeng Korean Society of Applied Entomology 2001 Journal of Asia-Pacific Entomology Vol.4 No.1
Sex pheromone composition was analyzed for the oriental fruit moth(Grapholita molesta), and field trapping studies were also conducted to develop monitoring system with its sex pheromone in Korea. The calling and mating behavior of G. molesta were ween maximally 2 to 1 hr before lights-off and these behavior ceased after lights-off. Analysis of abdominal tip extracts from virgin females of G. molesta revealed 4 compounds, Z8-dodecenyl acetate (Z8-12:Ac), E8-dedecenyl acetate (E8-12:Ac), Z8-dodecenol (Z8-12:OH) and dodecanol (12:OH). In the field trappings, the best capturing activity for G. molesta was observed with the 95:5:1 blend of Z8-12:Ac, E8-12:Ac and Z8-12:OH but 12:OH showed no synergic effect. The most effective amount of sex pheromone blend was 0.5mg for a lure.