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 : 김득한 (검색결과 53 건)
- 무료
- 기관 내 무료
- 유료
-
-
Au 스터드 범프 본딩과 Ag 페이스트 본딩으로 연결된 소자의 온도 측정 및 접촉 저항에 관한 연구
김득한,유세훈,이창우,이택영,Kim, Deuk-Han,Yoo, Se-Hoon,Lee, Chang-Woo,Lee, Taek-Yeong 한국마이크로전자및패키징학회 2010 마이크로전자 및 패키징학회지 Vol.17 No.2
탄탈륨실리사이드 히터가 내장된 소자를 Ag 페이스트와 Au SBB(Stud Bump Bonding)를 이용하여 Au가 코팅 된 기판에 각각 접합 하였다. 전단 테스트와 전류를 흐르면서 열 성능을 측정하였다. Au 스터드 범프 본딩의 최적 플립칩 접합조건은 전단 후 파괴면 관찰하여 설정하였으며, 기판 온도를 $350^{\circ}C$, 소자 온도를 $250^{\circ}C$에서 하중을 300 g/bump 로 하여 접합하는 경우가 최적 조건이였다. 히터에 5 W 인가시 소자의 온도는 Ag 페이스트를 이용한 접합의 경우 최대 온도는 약 $50^{\circ}C$이었으며, Au 금속층을 갖고 있는 실리콘 기판에 Au 스터드 본딩으로 접합된 인 경우 약 $64^{\circ}C$를 나타내었다. 기판과의 접촉면적이 와이어본딩과 Au 스터드 범프 본딩 가 약 300배가 차이가 나는 경우 약 $14^{\circ}C$ 차이를 나타내었고, 전사모사를 통하여 접합면의 접촉저항이 중요한 이유임을 알 수 있었다. The device with tantalum silicide heater were bonded by Ag paste and Au SBB(Stud Bump Bonding) onto the Au coated substrate. The shear test after Au ABB and the thermal performance under current stressing were measured. The optimum condition of Au SBB was determined by fractured surface after die shear test and $350^{\circ}C$ for substrate, $250^{\circ}C$ for die during flip chip bonding with bonding load of about 300 g/bump. With applying 5W through heater on the device, the maximum temperature with Ag paste bonding was about $50^{\circ}C$. That with Au SBB on Au coated Si substrate showed $64^{\circ}C$. The difference of maximum temperatures is only $14^{\circ}C$, even though the difference of contact area between Ag paste bonding and Au SBB is by about 300 times and the simulation showed that the contact resistance might be one of the reasons.
-
골 유도 재생술 후 감소된 임플란트 주위 부착 각화 점막 증대를 위한 유리 치은 이식술 증례
김득한,지숙,방은경,Kim, Deug-Han,Ji, Suk,Pang, Eun-Kyoung 대한치주과학회 2008 Journal of Periodontal & Implant Science Vol.38 No.4
Purpose: During guided bone regeneration procedures for the augmentation of deficient alveolar ridge, primary closure of flap is necessary. For primary flap closure, flap is repositioned coronally and the zone of attached keratinized mucosa may decreased. The need for attached keratinized mucosa around dental implants is still controversial, but sufficient peri-implant attached keratinized mucosa would be beneficial for functional and esthetic aspects. This case report presents three cases that demonstrated free gingival graft for increasing the zone of peri-implant attached keratinized mucosa which was decreased after guided bone regeneration. Materials and Methods: In first case, maxillary incisors were extracted and guided bone regeneration was performed simultaneously. Because the membrane was exposed at 3 weeks after operation, the membrane was removed and free gingival graft was performed for primary flap closure. Free gingival graft was performed again at implant placement for the increase of attached keratinized mucosa. In second case, guided bone regeneration was performed on lower right first molar area, and implant was placed with free gingival graft. In third case, lower right molar area showed insufficient attached keratinized mucosa after implant placement with guided bone regeneration. When abutments were connected, free gingival graft with apically positioned flap was performed. Result: In these three cases, the zone of attached keratinized mucosa around dental implants was decreased after guided bone regeneration. And the increase of peri-implant attached keratinized mucosa could be obtained effectively by free gingival graft. Conclusion: Free gingival graft could be a effective treatment method increasing the zone of attached keratinized mucosa which was decreased after guided bone regeneration procedures.
-
-
-
-
백서 두개골 결손부에서 동결건조골과 gel/putty 형 탈회골기질의 골재생효과
김득한,홍지연,방은경,Kim, Deug-Han,Hong, Ji-Youn,Pang, Eun-Kyoung 대한치주과학회 2009 Journal of Periodontal & Implant Science Vol.39 No.3
Purpose: This study was aimed to evaluate the effect of the Freeze Dried Bone Allograft and Demineralized Bone Matrix on osseous regeneration in the rat calvarial defects. Methods: Eight mm critical-sized calvarial defects were created in the 80 male Sprague-Dawley rats. The animals were divided into 4 groups of 20 animals each. The defects were treated with Freeze Dried Bone Allograft($SureOss^{TM}$), Demineralized Bone Matrix($ExFuse^{TM}$ Gel, $ExFuse^{TM}$ Putty), or were left untreated for sham-surgery control and were evaluated by histologic and histomorphometric parameters following a 2 and 8 week healing intervals. Statistical analysis was done between each groups and time intervals with ANOVA and paired t-test. Results: Defect closure, New bone area, Augmented area in the $SureOss^{TM}$, $ExFuse^{TM}$ Gel, $ExFuse^{TM}$ Putty groups were significantly greater than in the sham-surgery control group at each healing interval(P < 0.05). In the New bone area and Defect closure, there were no significant difference between experimental groups. Augmented area in the $ExFuse^{TM}$ Gel, $ExFuse^{TM}$ Putty groups were significantly greater than $SureOss^{TM}$ group at 2weeks(P < 0.05), however there was no significant difference at 8 weeks. Conclusions: All of $SureOss^{TM}$, $ExFuse^{TM}$ Gel, $ExFuse^{TM}$ Putty groups showed significant new bone formation and augmentation in the calvarial defect model.
-
Resonance frequency analysis를 이용한 non-submerged type 임플란트의 초기 안정성 분석
김득한,방은경,김창성,최성호,조규성,Kim, Deug-Han,Pang, Eun-Kyoung,Kim, Chang-Sung,Choi, Seong-Ho,Cho, Kyoo-Sung 대한치주과학회 2009 Journal of Periodontal & Implant Science Vol.39 No.3
Purpose: The purpose of the present study was to analyze the implant stability quotient(ISQ) values for Korean non-submerged type implant and determine the factors that affect implant stability. Methods: A total of 49 Korean non-submerged type implants were installed in 24 patients, and their stability was measured by resonance frequency analysis(RFA) at the time of surgery, and 1, 2, 3, 4, 8, 12 weeks postoperatively. The data for implant site, age, sex, implant length and diameter, graft performing, bone type, and insertion torque were analyzed. Results: The lowest mean stability measurement was at 3 weeks. There was significant difference between implant placement and 12 weeks. There was significant difference between implant placement and 12 weeks in diameters of 4.1 mm and 4.8 mm. Also, there were significant differences between diameters of 4.1 mm and 4.8 mm at implant placement and 12 weeks after surgery. This result suggests that the factor related to implant diameter may affect the level of implant stability. No statistically significant relationship was found between the resonance frequency analysis and the variables of maxilla/mandible, sex, anterior/posterior, implant length, age of patient, graft performing, bone type, insertion torque during initial healing period. Conclusions: These findings suggest that the factor related to implant diameter may affect the variance of implant stability, and ISQ value of implant was stable enough for proved stability level during initial healing period.
-
김득만(Kim Deuk-Mann) 대한철학회 2004 哲學硏究 Vol.91 No.-
이 연구는 전체적으로, 가치관념의 철학적 접근, 특히 도가철학적 접근을 통해 ‘도가철학에서 주장하는 가치체계가 무엇인가’를 해명하는 것을 목표로 한다. 그리고 세부적으로는 도가 가치관인 天人合一을 체계적으로 분석하고, 아울러 天人合一의 통로로서 자연과 천인합일을 성취할 수 있는 존재로서 영兒에 대해 살펴본 후, 도가 가치관의 심미적 측면에 대해 고찰하려는 것이다. 중국철학에 있어 ‘天人合一’이라는 명제는 ‘道’의 입장과 동일한데, 이것이 바로 도가에서 가장 강조하는 가치 관념의 정수이다. 도가에서 ‘天人合一’의 가치관념은 개인의 삶에 관계된 개인의 가치와 아름다움에 관계된 심미적 가치를 통합하는 개념이다. 다시 말해 인간 측면의 개인 가치와 天(자연) 측면의 심미적 가치를 통일한다는 것이다. 도가철학은 여기서 도의 본성인 ‘自然’을 끌어들여 天과 人을 연결시키고, 이러한 자연본성을 지닌 거짓 없는 정신세계의 소유자로 영兒를 내세운다. 그러므로 老莊은 物과 我가 하나로 통일되는 경지이며, 天과 人이 하나의 몸이 되는 경지를 영兒로 표현한다. 노장은 이러한 영兒的 태도, 즉 자연스럽고, 천진하고, 소박한 것이야 말로 진정한 아름다움이라고 칭할 수 있다고 하여, 無味之味, 天뢰之音, 不睹之色을 아름다운 것이라고 생각한다. 우리는 이 연구를 통해 도가의 가치관인 천인합일의 가치체계가 인간의 측면인 개인의 가치관과 자연의 측면인 심미적 가치관의 통합이라는 것을 밝히고자 하였다. The purpose of this thesis is first, generally to find the value system that Daoism insists, especially through the attempts of Daoism. And second, particular purpose is to analyze Unity of heaven and man, view of value of Daoism, in addition, to examine Child as it can realize Nature and Unity of heaven and man, and We will examine aesthetic aspect of Daoism. The proposition of Unity of heaven and man is like Dao. That is the essence of value concept that is accented in Daoism. Value concept of Unity of heaven and man in Daoism unites value of individual concerned individual life with aesthetic value concerned beauty. In other words, it unites individual value as aspect of man with aesthetic value as aspect of Heaven(Nature). Daoism connects Heaven with man through Nature, essence of Dao, and it puts up Child as owner of such essence of nature and spirit world. So Lao-Zhuang is level of unity things and self, Child is level of unity heaven and man. Lao-Zhuang thinks that beauty is non-artificiality, because attitude of Child, that is natural, pure, quiet attitude is said to be true beauty. Through this study, We make clear that Value concept of Unity of heaven and man in Daoism is Unity of individual value as aspect of man and aesthetic value as aspect of Nature.
-
ScienceON
스콜라연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
