http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
김민구,이재학,이재홍,Kim, Min-Gu,Lee, Jae-Hak,Lee, Jae-Hong 대한전자공학회 1995 전자공학회지 Vol.22 No.9
최근 연구개발 및 표준화에 박차를 가하고 있는 Personal communication systems(PCS)의 개요 및 개발동향을 살펴보고 앞으로의 PCS 전개방향을 전망한다. 현재 여러 형태의 PCS 시스템들이 연구개발 중이며 특정기술에 의존하는 경향을 보이고 있다. 그러나 다가올 2000년대에는 이를 통합하는 표준으로서 유럽지역의 UMTS(Universal Mobile Telecommunications System)와 국제적 규모의 차세대 공중육상이롱통신 시스템인 FPLMTS/IMT-2000(Future Public Land Mobile Telecommunications System/lnternational Mobile Telecommunlcation-2000)이 확립될 것으로 보이며, 최종에는 이를 통합하는 하나의 국제표준이 형성될 것으로 본다.
PVA와 술폰화된 생체고분자를 이용한 생체막의 물리적 생물학적 특성
김민구,이동건,권혁준,나양호,Kim, Min Gu,Lee, Dong Keon,Kwon, Hyuck Joon,Na, Yang Ho 한국섬유공학회 2018 한국섬유공학회지 Vol.55 No.4
We prepared bio-membranes by mixing polyvinyl alcohol (PVA) with a natural polymer [${\kappa}$-Carrageenan (${\kappa}-Car$) or chondroitin sulfate (CS)] having a sulfonate group similar to proteoglycan of articular cartilage and investigated the mechanical, thermal, and surface properties of these bio-membranes that varied with the content ratio of the natural polymer. We found that the mechanical properties of the bio-membranes decreased with the ratio of ${\kappa}-Car$ or CS. It was found that the mesenchymal stem cells (MSCs) virtually did not adhere to the PVA hydrogel film prepared by freeze-thawing method, whereas they adhered to the PVA hydrogel film prepared by solution casting. In addition, the adhesion rate of the MSCs on the bio-membranes gradually increased with the ratio of ${\kappa}-Car$ or CS.
당뇨 유도 백서 경골에 매식한 티타늄 임플란트 주위에 지방조직 유래 줄기세포 적용 시 골치유에 미치는 영향
김민구(Min-Gu Kim),정인교(In-Kyo Jung),신상훈(Sang-Hun Shin),김철훈(Chul-Hoon Kim),김복주(Bok-Joo Kim),김정한(Jung-Han Kim),황영섭(Young-Sup Hwang),정유진(Eu-Gene Jung),김진우(Jin-Woo Kim),김욱규(Uk-Kyu Kim) 대한구강악안면외과학회 2010 대한구강악안면외과학회지 Vol.36 No.5
Introduction: Diabetes mellitus, as a major health problem for the elderly has been shown to alter the properties of the bone and impair bone healing around a titanium implant in both humans and animals. The aim of this study was to examine the effect of adipose-derived stem cells on the healing process around a titanium implant in streptozotocin-induced diabetic rats. Materials and Methods: Thirteen rats were divided into two groups: adipose-derived stem cells injected group and a control group. A titanium screw implant (diameter: 2.0 mm, length: 3.5 mm) was placed into both tibia of 13 rats: 13 right tibia as the control group and 13 left tibia as the experimental group. The rats were sacrificed at different intervals (1, 2, and 4 weeks) after implantation for histopathology observations and immunohistochemistric analysis. Results: The histopathological findings revealed earlier new formed bone in the experimental group than the control group. In particular, at 1 week after implantation, the experimental group showed more newly formed bone and collagen around the implant than the control group. In immunohistochemistric analysis, osteoprotegerin (OPG) expression in the experimental group increased early compared to that of the control group until 2 weeks after implantation. However, after 2 weeks, OPG expression in the experimental group was similar to OPG expression in the control group. The receptor activator of nuclear factor κB ligand (RANKL) expression in the experimental group increased early compared to that of the control group, and then decreased at 2 weeks. After 2 weeks, the level of RANKL expression was similar in both groups. Conclusion: These results suggest that adipose-derived stem cells in implantation can promote bone healing around titanium, particularly in diabetes mellitus induced animals.
김민구 ( Min Gu Kim ),김정아 ( Jung Ah Kim ),노낙경 ( Nark Kyoung Rho ),김범준 ( Beom Jun Kim ),김원석 ( Won Serk Kim ),이동윤 ( Dong Youn Lee ),이주흥 ( Joo Heung Lee ),양준모 ( Jun Mo Yang ),이일수 ( Eil Soo Lee ) 대한피부과학회 2006 대한피부과학회지 Vol.44 No.10
Background: Pitted keratolysis (PK) is an acquired, chronic, usually asymptomatic, non-inflammatory, superficial bacterial infection of the stratum corneum of the soles. Corynebacterium species are thought to be the causative organisms of PK. This condition is common in feet of active people wearing sweaty shoes, namely, athletes and soldiers. Objective: To analyze the clinical manifestations of pitted keratolysis. Methods: A total of 133 Korean male soldiers diagnosed with PK (aged between 19 and 33, mean 21.9 years) were included in this study. All patients were investigated between April 2004 and May 2005. Factors investigated included age, location, duration, date of visit, physical examination, subjective symptoms, associated medical conditions, and treatment modalities. All patients were examined carefully to verify accompanying erythrasma or trichomycosis axillaris (TMA). Results: About half of the patients visited our department in spring (March, April, and May). However, PK was found in all the seasons. The ball of the foot was the most frequently involved site (92.5%). The big toe (72.2%) was also a frequent site of involvement. Forty-five patients (41.7%) had coexistent erythrasma, 22 (20.4%) had TMA, and 14 (13.0%) had a simultaneous presence of both erythrasma and TMA. Hyperhidrosis (98.5%) and foul odor (95.5%) were the main complaints in most of the patients. Other symptoms associated with PK were sliminess (38.3%), burning (23.3%), itching (18.8%), and prickling (13.5%) sensations. Various treatment modalities such as topical antibiotics, topical antifungal agents, and oral erythromycin have been used. All lesions subsided within 1 month after treatment. Although recurrence rate was high (64.3%), parameters such as period of prevalence, size and shape of the lesion, and treatment modality were not associated with the recurrence rate. Conclusion: The present study provides basic clinical information on PK, which is a common condition of the feet of Korean male soldiers. (Korean J Dermatol 2006;44(10):1165~1170)