PECVD로 제작한 수소화된 비정질 탄소(a-C:H) 박막의 화학결합 구조에 관한 연구

노지연,이석호,오동선,박혁렬,김영산 木浦大學校基礎科學硏究所 1997 基礎科學硏究誌 Vol.15 No.-

Hydrogenated amorphous carbon(a-C:H) films were prepared by PECVD(Plasma enhanced-chemical vapor deposition) method. The films were characterized using various spectroscopic measurements such as Raman scattering, FTIR(Fourier transform infrared) absorption spectroscopy. FRIR absorption reflects only the optically active hydrogen in the a-C:H and, using it together with Raman spectroscopy. The spectral analysis indicated that changes in Raman spectroscopy intensity occurring with increasing substrate temperature 50℃~300℃ were determined to be caused by changes in optically resonant components in the films. Furthermore, a significant correlation was the two crystalline forms of carbon-graphite and -diamond consist of sp² and sp³ bonds, respectively. Significant changes in chemical bonding(sp²/sp³) and micro-structure of hydrogenated amorphous carbon thin films occur as the substrate temperature varies from 50 to 300℃ during.

높은 입체선택성을 나타내는 고리카보네이트의 친핵성 치환반응과 광학활성인 β-Hydroxy Ester의 합성

강석구,박동철,노호식,윤승현,홍덕표 성균관대학교 기초과학연구소 1995 論文集 Vol.46 No.1

The nucleophilic ring opening of the cyclic carbonates of optically active threo-2,3-dihydroxy esters afforded α-substituted β-hydroxy esters with highly regio- and stereoselectivity under mild conditions. The α-substituted β-hydroxy esters were transformed to β-hydroxy esters

Pd(0)를 이용한 고리 카보네이트의 친핵성 치환 반응 연구

강석구,박동철,전제호,노호식 성균관대학교 기초과학연구소 1993 論文集 Vol.44 No.2

촉매량의 Pd(0)존재하의 chiral allylic 그리고 dienylic 고리 카보네이트와 여러 가지 친핵성 치환체들의 치환 반응을 연구하였는데 이 치환 반응은 친핵체에 따라서 α-, γ-, 또는 ε-위치에 치환된 높은 위치 및 diastereoselection이 있는 반응임을 알았고 또한 이의 입체화학을 결정하였다. We studied the reactions of chiral allylic and dienylic cyclic carbonates with various nucleophiles in the presence of Pd(0)catalyst and found that substitution occurred at α-, γ-, ε-position with high regio-and diasteroselectirity depending on nucleophiles used.

산삼 배양액 급여가 돈육의 이화학적 특성에 미치는 영향

진상근,김일석,송영민,허선진,박기훈,정기종,김동훈,노정만 진주산업대학교 산업과학기술연구소 2006 산업과학기술연구소보 Vol.- No.13

Berkshire를 이용하여 70일간 산삼 배양액 급여 시 육의 이화학적 특성에 미치는 영향은 다음과 같다. 산삼 배양액의 급여에 의해 육의 수분, 조단백, 조지방, 회분, pH, 가열감량, 콜레스테롤 함량, 육색, 조직감의 응집성과 검성, 포화지방산 및 불포화지방산의 비율은 차이를 보이지 않았다. 보수력, 지방색 L^(*)값, 지방산 중 linoleic acid(18:2), arachidonic acid(20:4), 필수지방산의 함량, 아미노산 중 threonine, glutamic acid, valine, isoleucine, leucine, histidine, lysine 및 총아미노산 함량은 산삼 배양액의 급여에 의해 감소하였다. 전단가, 조직감의 표면경도, 경도, 씹힘성, 지방산 중 stearic acid(18:0), oleic acid(18:1) 함량, 아미노산 중 serine, glycine, cystine, methionine, tyrosine 및 phenylalanine의 함량은 산삼 배양액의 급여에 의해 증가하였다. 본 연구결과를 종합하면 산삼 배양액의 급여는 돈육의 경도를 증가시키는 효과 외에 뚜렷한 이화학적인 차이를 나타내지 않았다. 이러한 이유는 급여된 산삼 배양액 내에 함유된 생리활성 물질의 함량이 낮고, 급여수준이 낮은 결과로 사료되어진다. A total of 60 pigs (Berkshire) were used to investigate the effect of dietary artificial culture medium of wild ginsengs (CMG) on physico-chemical characteristics of pork. About 60 kg pigs were randomly alloted into one of two experimental diet groups (C:commercial diet feed; T:commercial diet + 1 L CMG per day for 70days). Pigs were slaughtered at approximately 110 kg live weight, and chemical composition and physico-chemical characteristics were measured in pork loin. Moisture, crude protein, crude fat and ash were not significantly different by dietary artificial culture medium of wild ginsengs. Water-holding capacity was decreased by dietary artificial culture medium of wild ginsengs, while shear force was increased. However, pH, cooking loss and cholesterol contents were not significantly different between two different treatments. In color, L^(*) of fat was decreased by dietary artificial culture medium of wild ginsengs. Brittleness, hardness and chewiness were increased in dietary artificial culture medium of wild ginsengs group. In fatty acid, stearic acid (18:0) and oleic acid (18:1) were higher in dietary artificial culture medium of wild ginsengs group, whereas linoleic acid (18:2) and arachidonic acid (20:4) were higher in control group. In amino acid, serine, glycine, cystine, methionine, tyrosine and phenylalanine were higher in dietary artificial culture medium of wild ginsengs group, whereas threonine, glutamic acid, valine, isoleucine, leucine, histidine and lysine were higher in control group.

중형의 선천성 멜라닌세포성 모반에서 발생한 것으로 추정되는 악성 흑색종 1예

노낙경,최석진,이일수,이동윤 대한피부과학회 2002 대한피부과학회지 Vol.40 No.9

Congenital melanocytic nevi are usually classified as small, medium-sized, and large according to their size. Many authors suggest that the risk for the occurrence of malignant melanoma may roughly be proportional to the size of underlying congenital melanocytic nevus. However, the risk of melanoma in medium-sized congenital melanocytic nevi is a controversial subject and universal recommendations regarding the management of such lesions has not been made. We present a 62-year old man with a medium-sized congenital melanocytic nevus in which malignant melanoma developed.

식도에서 발생한 선양 낭포성 암종 -1예 보고-

고은석,김인숙,권태정,이동화,심찬섭,이길노 대한병리학회 1990 Journal of Pathology and Translational Medicine Vol.24 No.4

요골부전박유리피판을 이용한 두경부 재건

오석준,정철훈,범진식,남동우,이종욱,노영수 大韓成形外科學會 1998 Archives of Plastic Surgery Vol.25 No.5

The free flaps have been used for reconstruction of the head and neck because of their superior results comparing with other types of flaps. Among them, radial forearm free flap has many advantages, its thinness, pliablilty, long vascular pedicle, large sensory flap, and compound flap including tendons and bone. We report 28 cases of head and neck reconstruction with radial forearm free flap between March 1991 and March 1997. Patient's age ranged from 21 to 76 years(mean 50.5 years). There were 23 men and 5 women. Mean follow-up period was 14 months. The most common cause was malignant tumor of the head and neck, especially squamous cell carcinomas(18 cases). We used this flap to reconstruct the oral cavity in 13 cases, the hypopharyngoesophagus in 6 cases, external surface of the head and neck in 7 cases, and the orbit in 2 cases. All of these flaps survived without complication. Two cases of fistula developed, in which forearm flaps were used for tongue and hypopharyngoesophageal reconstruction, and they were treated with conservative manners. Partial losses of skin graft at donor site of the forearm developed in 3 cases. They healed with split-thickness skin graft or local flap. The function of reconstructed upper aerodigestive tract and eye socket was good. The cosmetic result was not good in cases of reconstruction for external surface of the face with this flap, but it was better than other free flaps. So, we concluded the radial forearm free flap is available for reconstruction of the head and neck.

GIS를 활용한 부동산정보시스템의 설계 및 구현

김석환(Suk-Hwan Kim),노동학(Dong-Hag Rho),김부영(Bu-Young Kim),옥철영(Chul-young Ok) 한국정보과학회 2000 한국정보과학회 학술발표논문집 Vol.27 No.2Ⅲ

부동산 정보는 많은 사람들이 관심을 가지며 현실 생활에서 많은 비중을 차지하고 있는 부분이다. 또한 부동산 정보는 변화가 많으며 실시간적인 성향이 짙고 지리적 특색이 상당히 강한편이며, 또한 기존 정보의 매개체인 정보지와 공인 중개사 사무소에서의 정보는 한계에 도달하게 되었다. 이에 대한 해결책으로 부동산정보는 전자지도를 기반으로 한 Internet-GIS 시스템을 활용한 부동산정보시스템의 도입이 절실하다. 본 시스템은 지리정보시스템(G.I.S Geographic Information System)의 장점인 전자지도를 이용하여 각 지역에 산재되어 있는 부동산정보의 체계적인 구축을 위한 데이터 베이스 설계와 인터넷에 적용시키기 위한 Internet-GIS 기술의 적용을 중점으로 한 실용성 있는 인터넷정보 시스템이다.

Numerical Analysis of Rarefied flows by Generalized Hydrodyanmic Equations

Chae, Dong-Suk,Kim, Chong-Am,Rho, Oh-Hyun 서울대학교 항공우주신기술연구소 2000 항공우주신기술연구소 연구보고 Vol.1 No.2

This paper describes the efficient numerical methods for solving one of the 13 moment equations, i.e., GH(Generalized Hydrodynamic) equations coupled with modern computational fluid dynamics. Based on developed methods, a few elementary non-equilibrium rarefied flows are solved to produce improved results over those of the Navier-Stokes equations. Through the analysis of one dimensional compression expansion and plane Couette flows by GH and NS constitutive relations, the unique fluid dynamic characteristics of GH equations are explored. In two dimensional case, a method for solving full GH contitutive relations is developed and, additionally, the effects of slip wall boundary condition of Maxwell-smoluchowski and Eu are investigated. The comparison with results of DSMC methods in one dimensional shock structure and two dimensional supersonic flat plate problem indicates that the present methods give qualitatively more accurte results than NS equations in rarefied flows.

The MIPS development for lamp system of vehicle application

Lee Dong Ju,JP. Boeschlin,Yun Hyun Chul,Chon Ho Jun,Rho Suk Young 전력전자학회 2011 ICPE(ISPE)논문집 Vol.2011 No.5

To control lamp system in vehicle application, the MIPS has been developed. The MIPS is a four channel Intelligent Power Switch (IPS) with low Rdson, autonomous PWM generator, over current and temperature protection functions, current sense diagnosis functions. The embedded PWM generator will reduce the CPU load on the MCU because the periodic switching ON/OFF as well as needed channel phase shift and device phase shift will be performed by MIPS. The MIPS directly controls four bulbs(ex, High beam, Low beam, Tail lamp, Fog lamp) and two external single IPS by external driver. MIPS can control the front lift and right area lamps, turn signals also by up to 10 IPS switches.