http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
상전환법에 의한 6FDA-p-TeMPD 폴리이미드막의 제조
김유신,김진환,이우태 全南大學校 觸媒硏究所 2002 觸媒硏究 論文集 Vol.23 No.-
Asymmetric polyimide(6FDA-p-TeMPD) membranes were prepared by a wet phase inversion method. The polyimide used in the preparation of membranes was synthesized by chemical imidization method of hexafluoroisopropylidene-2,2-bisphthalic anhydride (6FDA) and 2,3,5,6-tetramethy-1-1,4-phenylenediamine(p-TeMPD). The change of the membrane morphology were investigated with polymer concentration, sort of solvent and the differences of solubility parameter in polymer, solvent and nonsolvent. The micro-voids disappeared as the concentration of polymer increased, indicating that the exchange between solvent and nonsolvent was prohibited due to increasing of polymer concentration. The difference of solubility parameter plays a very important role in determining the membrane morphology and performance. In accordance with solubility parameter difference, the morphology of the membrane was shown in two aspects: (1) a sponge-type in the delayed liquid-liquid phase separation process; (2) a finger-type in the instantaneous liquid-liquid phase separation processes. According to the sort of the nonsolvents used to the formation of the membranes, oxygen permeability coefficient(P_O2) was the order of IPA> MeOH> H_2O> EtOH, and selectivity(P_O2/P_N2) was the order of MeOH> H_2O> EtOH> IPA. Especially, in the system of PI/DMAc/MeOH, the membrane which had the remarkable gas separation performance was produced. Oxygen permeability coefficient(P_O2) and selectivity(P_O2/P_N2) in the membrane was 106 Barrer and 4.21, respectively.
Arc/View GIS 를 이용한 영산강유역의 환경정보 데이터베이스 구축
유태종,조재현,박동진 대한상하수도학회 2001 상하수도학회지 Vol.15 No.2
Graphic and attribute database on Youngsan river basin was constructed using Arc/View GIS. Thematic map of Watershed, land use, administrative boundary and DEM were included in the graphic database. Area of Youngsan river basin was splitted into 100 ×100 m grids. Attribute data about pollution sources and pollutant loads were inputted in each grid and thematic map of them were made. Details of attribute data were river water quality, point and nonpoint sources of pollution, pollutant loads of each pollutant source, measured pollutant loads at aeveral points of the river and pollutant of subbasins. Pollutant loads were calculated by overlaying thematic maps of the unit load and pollution source. Graphic user interface was developed to facilitate the inquiry, modification and analysis of the environmental information. This study shows that environmental information of Youngsan river basin is closely connected with graphic database by Arc/View GIS. We can easily assess the distribution characteristic of pollution sources and pollutant loads by grid based database construction. Informations of specific area such as sub-basin and wastewater treated area are accurately extracted. The main pollution sources in the Youngsan river basin are population and livestock.
Detection of Differentially Expressed Genes in Glioblastoma by Suppression Subtractive Hybridization
Yu, Na-Mi,Ahn, Jung-Yong,Choi, Eun-Jin,Hong, Yong-Kil,Kim, Tai-Gyu,Kim, Chang-Hyun,Lee, Kyu-Sung,Kim, Dong-Seok,Kim, Jin-Kyeoung The Korean Neurosurgical Society 2005 Journal of Korean neurosurgical society Vol.37 No.6
Objective: A variety of genetic alterations in human glioblastoma comprises signal transduction and cell cycle arrest control of cellular processes. Subtractive hybridization is potentially a faster method for identifying differentially expressed genes associated with a particular disease state. Using the technique of subtraction, we isolated novel genes that are overexpressed in glioblastoma tissue as compared to normal brain tissue. Methods: We evaluated the differential expression of genes in each of hybridizing tester and driver cDNAs to digested 130 clones. After sequencing of 130 clones and homology search, this study performed to determine mRNA expression of the unknown gene, "clone 47", in brain tissue, glioblasoma, and several cancer cell lines by reverse transcription-polymerase chain reaction (RT-PCR). To test the time course for Go-phase arrest, serum stimulation and expression at various times for RT-PCR performed. Results: We identified 23 novel genes by BLAST of the digested 130 clones. The expressions of "clone 47" mRNA of glioblastoma and several cancer lines were significantly higher than normal brain tissues and several normal cell lines. We confirmed the mRNA expression of "clone 47" was up-regulation for $0.5{\sim}1hr$ of WI-38 cell differentiation. Conclusion: The novel gene, "Clone 47" is upregulated in glioblastoma tissue and several cancer cell lines. This gene is time dependent activation during time course of serum stimulation. This result suggests that "clone 47" playa role in brain tumorigenesis and the activation of this "clone 47" may be necessary for the development of cancer.
Possible Applications for Fascial Anatomy and Fasciaology in Traditional Chinese Medicine
Yu Bai,소광섭,Byung-Cheon Lee,Yong Huang,Chun-lei Wang,Jun Wang,Jin-peng Wu,Jing-xing Dai,Janos Palhalmi,Ou Sha,David Tai Wai Yew,Lin Yuan 사단법인약침학회 2010 Journal of Acupuncture & Meridian Studies Vol.3 No.2
Research using medical imaging instruments such as computed tomography and magnetic resonance imaging has led to the proposal that the fascial network distributed over the human body is the anatomical basis for the acupoints and meridians of traditional Chinese medicine. Therefore, we put forward a new theory of anatomy called fascial anatomy. In fascial anatomy, a human body is divided into two major systems. One is the supporting-storing system of unspecialized connective tissues. The other is a functional system. An undifferentiated non-specific connective tissue network, with the participation of the nervous and the immune systems, constitutes the supporting-storing system of the human body. The various differentiated functional cells in the body that are supported and surrounded by the supporting-storing system constitute the functional system. The discipline that studies the supporting-storing system and the mutual relationship between this system and the functional system in a living human body is called fasciaology. The establishment of fascial anatomy and fasciaology opens a new research field in anatomy; consequently, fasciaology will play a significant role in biological medicine and traditional Chinese medical research, as well as future clinical practice.
전유미(Yu-Mi Jeon),김상범(Sang-Bum Kim),정화해(Haw-Hae Jeong),서윤경(Youn-Kyoung Seo),이준희(Jun-Hee Lee),송용태(Yong-Tai Song),백두진(Doo-Jin Paik) 대한체질인류학회 2007 해부·생물인류학 (Anat Biol Anthropol) Vol.20 No.4
코안 및 코곁굴 내시경 수술 시 위코선반, 중간코선반, 아래코선반은 코안 구조물을 찾는 표지점이 되기 때문에 위치나 크기에 대한 명확한 해부학적 이해가 요구된다. 고정된 한국 성인 시신 43구(남자 23구, 여자 20구, 평균 나이 66.81세)의 머리뼈 86쪽을 대상으로 코안가쪽벽에서 맨위코선반의 존재 여부를 관찰하고 코안 가쪽벽에서 코점막을 제거하기 전과 후로 나누어 앞코가시점과 코선반 사이의 거리와 코선반뒤끝점사이의 거리, 코선반의 길이를 계측하였다. 나비벌집오목이 뚜렷하여 위쪽에 맨위코선반이 나타나는 경우는 66.7%이었다. 코점막 박리 후 앞코가시점을 기준으로 위코선반의 앞끝점과의 거리는 46.75 ㎜, 중간코선반의 앞끝점과의 거리는 38.23 ㎜, 아래코선반의 앞끝점과의 거리는 18.51 ㎜이었고 위코선반의 뒤끝점과의 거리는 55.11 ㎜, 중간코선반의 뒤끝점과의 거리는 54.72 ㎜, 아래코선반의 뒤끝점과의 거리는 50.26㎜이었다. 코점막 박리 후 위코선반의 길이는 22.20 ㎜, 중간 코선반의 길이는 40.14 ㎜, 아래코선반의 길이는 40.97㎜이었다. 이상의 결과는 코곁굴 내시경 시술 시 안전하고 정확한 시술을 위한 해부학적 지표가 될 것이다. Recently, with the increasing interests in the endoscopic nasal surgery, it is essential for practitioners to have detailed knowledges of the anatomical structures for the successful surgery. This study was undertaken to provide morphological information of the nasal turbinates as anatomical reference during endoscopic nasal surgery. A total of 43 adult cadaver heads were bisected midsagitally and evaluated morphometrically. The results were as follows: The highest nasal turbinatee were observed in 66.7% of the case. After removal of the mucosa, the distances from the akanthion to the anterior end of superior, middle, inferior nasal turbinate were 46.75 ㎜ , 38.23 ㎜ , 18.51 ㎜ respectively. The distances from the akanthion to the posterior end of superior, middle, inferior nasal turbinate were 55.11 mm, 54.72 ㎜ , 50.26 ㎜ respectively. The lengths of the superior, middle, inferior nasal turbinate were 22.20 ㎜ , 40.14 ㎜ , 40.97 ㎜ respectively. The detailed measurements of the nasal turbinates performed in this study may provide useful anatomical landmarks for the endonasal endoscopic surgery.