Polyester 絲의 熱收縮性에 關한 硏究

김완수,이은우,손중근 영남이공대학 산업기술연구소 1990 産業技術硏究 Vol.4 No.-

Polyester yarns with 75 denier 36 filament were heat treated at the temperature of 70℃, 90℃ and 110℃ for 30min. Results from experimental studies are as follows. (1) By D.S.C. curues analysis, the most desirable heat treatment condition was to be heat treated at the temperature of 110℃ for 30min. (2) By the results of shrinkage rate, when the heat treatment carried out at the high temperature for a short time it was so desirable having regard that the shrinkage rate of the sample under the heat treatment condition(110℃, 30min.) was so small. (3) In practical scouring processing, heat treatment have to carried out for a short time as possible as to diminish heat loss, if so, the defect generation probability will be low.

Radial displacement of clinical target volume in node negative head and neck cancer

Wan Jeon,Hong-Gyun Wu,Sang Hyuk Song,Jung-In Kim 대한방사선종양학회 2012 Radiation Oncology Journal Vol.30 No.1

Purpose: To evaluate the radial displacement of clinical target volume in the patients with node negative head and neck (H&N) cancer and to quantify the relative positional changes compared to that of normal healthy volunteers. Materials and Methods: Three node-negative H&N cancer patients and five healthy volunteers were enrolled in this study. For setup accuracy, neck thermoplastic masks and laser alignment were used in each of the acquired computed tomography (CT) images. Both groups had total three sequential CT images in every two weeks. The lymph node (LN) level of the neck was delineated based on the Radiation Therapy Oncology Group (RTOG) consensus guideline by one physician. We use the second cervical vertebra body as a reference point to match each CT image set. Each of the sequential CT images and delineated neck LN levels were fused with the primary image, then maximal radial displacement was measured at 1.5 cm intervals from skull base (SB) to caudal margin of LN level V, and the volume differences at each node level were quantified. Results: The mean radial displacements were 2.26 (±1.03) mm in the control group and 3.05 (±1.97) in the HƐtN cancer patients. There was a statistically significant difference between the groups in terms of the mean radial displacement (p = 0.03). In addition, the mean radial displacement increased with the distance from SB. As for the mean volume differences, there was no statistical significance between the two groups. Conclusion: This study suggests that a more generous radial margin should be applied to the lower part of the neck LN for better clinical target coverage and dose delivery.

원발성 중추신경계 림프종 23예의 치료 결과 분석 : Treatment Result of 23 Cases

이완수,김은영,장진우,박용구,이규성,최중언,정상섭,이규창 대한신경외과학회 1996 Journal of Korean neurosurgical society Vol.25 No.2

The authors report below a clinical study of 23 patients bearing 31 primary central nervous system lymphomas diagnosed between January 1985 and December 1994. The cohort included 13 men and 10 women whose mean age was 46 years, ranging from 28 to 61 years. No patient had antecedent of human immunodeficiency virus postivity but one had a past history of rheumatoid arthritis. The duration of symptom was less than 8 weeks in 52% of the patients. Symptom groups included increased intracranial pressure(78%), focla neurological decificit(52%), neuropsychiatric symptoms(43%) and seizures(13%). The histopathological diagnosies were done in 19 cases(10 cases by resective surgery, 9 cases by open or stereotactic biopsy). The others were diagnosed by the typical clinical course such as rapid disappearance of lesions after steroid therapy, and/or radiological findings. Histological subtypes(National Cancer Institute Working Formulation) was confirmed in 8 patients including 3 cases of diffuse large cell type. Phenotype was determined in 7 patients : 4 were B-cell type and 3 were T-cell type. One patient committed suicide during the radiation therapy and was therefore excluded from the survival analysis. All but two patients received radiation therapy. Five patients received chemotherapy. The over-all Kaplan-Meier survival rate was 46% at 2 years and 15.5% at 5 years. On univariate analysis, statistically significant prognositc factor associated with survival was not found but the higher Karnofsky score and single lesion were found to be favorable to the long-term survival. In the statistical analysis of the patients who received radiation therapy, surgical resection did not significantly influence the survival.

Radial displacement of clinical target volume in node negative head and neck cancer

Jeon, Wan,Wu, Hong-Gyun,Song, Sang-Hyuk,Kim, Jung-In The Korean Society for Radiation Oncology 2012 Radiation Oncology Journal Vol.30 No.1

Purpose: To evaluate the radial displacement of clinical target volume in the patients with node negative head and neck (H&N) cancer and to quantify the relative positional changes compared to that of normal healthy volunteers. Materials and Methods: Three node-negative H&N cancer patients and five healthy volunteers were enrolled in this study. For setup accuracy, neck thermoplastic masks and laser alignment were used in each of the acquired computed tomography (CT) images. Both groups had total three sequential CT images in every two weeks. The lymph node (LN) level of the neck was delineated based on the Radiation Therapy Oncology Group (RTOG) consensus guideline by one physician. We use the second cervical vertebra body as a reference point to match each CT image set. Each of the sequential CT images and delineated neck LN levels were fused with the primary image, then maximal radial displacement was measured at 1.5 cm intervals from skull base (SB) to caudal margin of LN level V, and the volume differences at each node level were quantified. Results: The mean radial displacements were 2.26 (${\pm}1.03$) mm in the control group and 3.05 (${\pm}1.97$) in the H&N cancer patients. There was a statistically significant difference between the groups in terms of the mean radial displacement (p = 0.03). In addition, the mean radial displacement increased with the distance from SB. As for the mean volume differences, there was no statistical significance between the two groups. Conclusion: This study suggests that a more generous radial margin should be applied to the lower part of the neck LN for better clinical target coverage and dose delivery.

Reserpine으로 前處置한 鷄羊膜의 5-Hydroxytryptamine 및 Epinephrine에 對한 反應

李庠雨,裴完洙,趙貞植 부산의대 1968 부산의대잡지 - 부산대학교 의과대학 Vol.8 No.2

Independent and Additive Interaction Between Tumor Necrosis Factor β +252 Polymorphisms and Chronic Hepatitis B and C Virus Infection on Risk and Prognosis of Hepatocellular Carcinoma: a Case-Control Study

Jeng, Jen-Eing,Wu, Hui-Fang,Tsai, Meng-Feng,Tsai, Huey-Ru,Chuang, Lea-Yea,Lin, Zu-Yau,Hsieh, Min-Yuh,Chen, Shinn-Chern,Chuang, Wan-Lung,Wang, Liang-Yen,Yu, Ming-Lung,Dai, Chia-Yen,Tsai, Jung-Fa Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.23

To assess the contribution of tumor necrosis factor $(TNF){\beta}$ +252 polymorphisms to risk and prognosis of hepatocellular carcinoma (HCC), we enrolled 150 pairs of sex- and age-matched patients with HCC, patients with cirrhosis alone, and unrelated healthy controls. $TNF{\beta}$ +252 genotypes were determined by polymerase chain reaction with restriction fragment length polymorphism. Multivariate analysis indicated that $TNF{\beta}$ G/G genotype [odds ratio (OR), 3.64; 95%CI, 1.49-8.91], hepatitis B surface antigen (OR, 16.38; 95%CI, 8.30-32.33), and antibodies to hepatitis C virus (HCV) (OR, 39.11; 95%CI, 14.83-103.14) were independent risk factors for HCC. There was an additive interaction between $TNF{\beta}$ G/G genotype and chronic hepatitis B virus (HBV)/HCV infection (synergy index=1.15). Multivariate analysis indicated that factors associated with $TNF{\beta}$ G/G genotype included cirrhosis with Child-Pugh C (OR, 4.06; 95%CI, 1.34-12.29), thrombocytopenia (OR, 6.55; 95%CI, 1.46-29.43), and higher serum ${\alpha}$-fetoprotein concentration (OR, 2.53; 95%CI, 1.14-5.62). Patients with $TNF{\beta}$ G/G genotype had poor cumulative survival (p=0.005). Cox proportional hazard model indicated that $TNF{\beta}$ G/G genotype was a biomarker for poor HCC survival (hazard ratio, 1.70; 95%CI, 1.07-2.69). In conclusion, there are independent and additive effects between $TNF{\beta}$ G/G genotype and chronic HBV/HCV infection on risk for HCC. It is a biomarker for poor HCC survival. Carriage of this genotype correlates with disease severity and advanced hepatic fibrosis, which may contribute to a higher risk and poor survival of HCC. Chronic HBV/HCV infected subjects with this genotype should receive more intensive surveillance for early detection of HCC.

컬러센서를 위한 TiO2/Se : Te 이종접합의 스펙트럼 응답

우정욱,박욱동,김기완,이우일 ( Jung Ok Woo,Wug Dong Park,Ki Wan Kim,Wu Il Lee ) 한국센서학회 1993 센서학회지 Vol.2 No.1

TiOz/Se : Te heterojunction for color sensor has been fabricated by RF reactive sputtering and thermal evaporation methods onto glass substrate. The optimum deposition condition of TiO₂ films was such that RF power was 120 W, substrate temperature was 100℃, oxygen concentration was 50%, working pressure was 50 mTorr for the TiO₂ film thickness of 1000Å. In this case, the optical transmittance of TiO₂ film at 550 nm-wavelength was 85 %, resistivity was 2 X 10^9 Ω·cm, refractive index was 2. 3, and optical bandgap was 3. 58 eV. The composition ratio of 0 to Ti by AES analysis was 1.7. When TiO₂ films were annealed at 400℃ for 30 min. in O₂ ambient, the optical transmittance of TiO₂ films at the wavelength range of 300∼580 nm was improved from 0 to 25 %. When Se : Te films were annealed at 190℃ for 1 min, photosensitivity under illumination of 1000 lux was 0.75. The optical bandgap of Se : Te films was 1.7 eV. The structures of Se : Te films were the hexagonal with (100) and (110) orientation. The spectral response of a-Se was improved by the addition of Te, especially in the long wavelength region. The TiO₂/Se : Te heterojunction showed wide spectral response. and more improved one than that of a-Si film in the blue light region.

VLSI Layout Editor with Very Large Data Base by Data Overlaying Using Hard Disk and RAM Disk

Ho Sun Chung,Gab Jung Jeong,Won Lee,Gyu Wan Kweon,Jong Hoon Kang,Dae Hwan Kim,Wu Il Lee 대한전자공학회 1988 JTC-CSCC : Joint Technical Conference on Circuits Vol.- No.-

컬러센서를 위한 $TiO_{2}$/Se : Te 이종접합의 스펙트럼 응답

우정옥,박욱동,김기완,이우일,Woo, Jung-Ok,Park, Wug-Dong,Kim, Ki-Wan,Lee, Wu-Il 한국센서학회 1993 센서학회지 Vol.2 No.1

컬러센서를 위한 $TiO_{2}$/Se : Te 이종접합을 고주파 반응성 스퍼터링법과 진공증착법을 이용하여 제작하였다. 제조된 $TiO_{2}$ 막형성의 최적조건은 $1000{\AA}$의 $TiO_{2}$ 두께에서 고주파전력 120 W, 기판온도 $100^{\circ}C$, 산소농도 50% 및 분위기압 50 mTorr였다. 이 때 광투과율은 파장 550 nm에서 85%, 저항률은 $2{\times}10^9{\Omega}{\cdot}cm$, 굴절률은 2.3이었다. 제조된 $TiO_{2}$막은 직접천이형 에너지 밴드구조를 가지며 광학적 밴드갭은 3.58 eV였다. 제조된$TiO_{2}$막을 $400^{\circ}C$에서 30분간 열처리함으로써 광투과율이 파장 $300{\sim}580$ nm범위에서 $0{\sim}25%$까지 개선되었다. 또한 화학양론적 조성비를 조사하기 위하여 AES 분석을 한 결과 Ti 및 0의 조성비는 1 : 1.7로 나타났다. 한편 Se : Te 막형성의 최적조건은 $190^{\circ}C$에서 1분간 열처리했을 때였다. 이러한 조건으로 제조된 Se : Te막의 광학적 밴드갭은 1.7 eV였으며 육방정계구조의 (100) 방향 및 (110) 방향으로 Se : Te 막이 결정화됨을 알 수 있었다. 1000 lux의 조도에서 Se : Te막의 광전변환률은 0.75였다. 또한 Se에 Te를 첨가함으로써 장파장영역의 분광감도가 향상되었다. $TiO_{2}$/Se : Te 이종접합의 분광감도는 가시광 전영역에서 비교적 넓은 분광감도를 나타내었으며, 특히 청색영역에서 a-Si박막보다 우수한 분광감도를 나타내었다. $TiO_{2}$/Se : Te heterojunction for color sensor has been fabricated by RF reactive sputtering and thermal evaporation methods onto glass substrate. The optimum deposition condition of $TiO_{2}$ films was such that RF power was 120 W, substrate temperature was $100^{\circ}C$, oxygen concentration was 50%, working pressure was 50 mTorr for the $TiO_{2}$ film thickness of $1000{\AA}$. In this case, the optical transmittance of $TiO_{2}$ film at 550 nm-wavelength was 85%, resistivity was $2{\times}10^9{\Omega}{\cdot}cm$, refractive index was 2.3, and optical bandgap was 3.58 eV. The composition ratio of 0 to Ti by AES analysis was 1.7. When $TiO_{2}$ films were annealed at $400^{\circ}C$ for 30 min. in $O_{2}$ ambient, the optical transmittance of $TiO_{2}$ films at the wavelength range of $300{\sim}580$ nm was improved from 0 to 25%. When Se : Te films were annealed at $190^{\circ}C$ for 1 min., photosensitivity under illumination of 1000 lux was 0.75. The optical bandgap of Se : Te films was 1.7 eV. The structures of Se : Te films were the hexagonal with (100) and (110) orientation. The spectral response of a-Se was improved by the addition of Te, especially in the long wavelength region. The $TiO_{2}$/Se : Te heterojunction showed wide spectral response, and more improved one than that of a-Si film in the blue light region.

KUIC_LED: 개선된 집적회로 Layout Editor

이원(Won Lee),정갑중(Gab-Jung Chung),강종훈(Jong-Hoon Kang),권규완(Gyu-Wan Kweon),김대환(Dae-Hwan Kim),정호선(Ho-Sun Chung),이우일(Wu-Il Lee) 대한전기학회 1988 대한전기학회 학술대회 논문집 Vol.1988 No.7