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CHO, Sung June,SEO, Yong Seog,RYOO, Min Woong,RYU, In Soo,SONG, Kwang Sup,KANG, Sung Kyu 공주대학교 자원재활용 신소재 연구센터 1999 1차년도 센터 성과집 Vol.1999 No.-
We had developed a newly improved textile coating process with much decrease of the emission of volatile organic compound (VOC), toluene, using catalytic combustion technology, temperature swing adsorption method (TSA) and electrically heated catalyst system (EHC). Catalytic bumer was designed to adopt a duplication of forced diffusion combustion and premixed combustion. Low concentration VOC was accumulated to reach more than 1000ppm using TSA and heat exchanger. Without air pollution, the concentrated VOC was incinerated in EHC to produce heat. The remained VOC was used as a renewable energy source for textile drying. Substantial benefits were found in this coating process : significant reduction of VOC and energy saving.
Fractionated Stereotactic Radiotherapy for Metastatic Brain Tumor in Non-Small Cell Lung Cancer
Cho, Moon-June,Kim, Ki-Hwan,Kim, Jun-Sang,Kim, Seon-Hwan,Song, Shi-Hun,Song, Chang-Joon,Lim, Seung-Pyung,Kim, Sun-Young,Kim, Jae-Sung 충남대학교 암공동연구소 2003 암공동연구소 업적집 Vol.3 No.
Purpose: To evaluate the results of treatment with fractionated stereotactic radiotherapy for metastatic brain tumors in non-small cell lung cancer. Materials and Methods: Between August 1997 and August 2001, 17 patients, with metastatic brain tumors in non-small cell lung cancer (26 lesions), completed frameless fractionated stereotactic radiotherapy. All patients received a 30~36 Gy/10~20 fx external beam irradiation to the whole brain. Twelve received fractionated stereotactic radiotherapy for a single lesion, 3 for 2 lesions and 1 each for 3 and 5 lesions. The median tumor volume was 1.7 cc (0.3~55.2 cc). The fractionation schedule for the fractionated stereotactic radiotherapy was 21 Gy/3 fx in 8 lesions, 25 Gy/5 fx in 7, 18 Gy/1 fx in 6, 30 Gy/5 fx in 4 and 15 Gy/5 fx in 1. Multiple-arc, and 3D conformal, fractionated stereotactic radiotherapy, were delivered to 24 and 2 lesions, respectively. Follow-up was possible in all patients. Results: Nine out of 13 patients with follow-up radiological evaluations achieved a complete response (CR). The overall median survival, and 1 and 2 year survival rates were 20 months, and 64 and 28%, respectively. The median survival, and the 1 and 2 year survival rate of CR group were 20 months, and 73 and 22%, respectively. No patient has experienced any acute side reactions or late complications from the fractionated stereotactic radiotherapy. Conclusion: Although the number of patients treated with fractionated stereotactic radiotherapy was small, and follow-up period short, this study suggests that external beam irradiation to the whole brain, with 30 Gy/10 fx followed by fractionated stereotactic radiotherapy, could be a good treatment option for patients with metastatic brain tumors in non-small cell lung cancer. (J Lung Cancer 2002;1(1):48-54)
STRUCTURE THEOREMS FOR SOME CLASSES OF GRADE FOUR GORENSTEIN IDEALS
Cho, Yong Sung,Kang, Oh-Jin,Ko, Hyoung June Korean Mathematical Society 2017 대한수학회보 Vol.54 No.1
The structure theorems [3, 6, 21] for the classes of perfect ideals of grade 3 have been generalized to the structure theorems for the classes of perfect ideals linked to almost complete intersections of grade 3 by a regular sequence [15]. In this paper we obtain structure theorems for two classes of Gorenstein ideals of grade 4 expressed as the sum of a perfect ideal of grade 3 (except a Gorenstein ideal of grade 3) and an almost complete intersection of grade 3 which are geometrically linked by a regular sequence.