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김귀식(GUI-SHIK KIM),양경조(KYEONG-CHO YANG),허철구(CHUL-GOO HU),송정화(JEONG-HWA SONG) 한국해양공학회 2005 韓國海洋工學會誌 Vol.19 No.5
This study has been conducted to investigate corrosivity of carbon steel, Cu, Zn and Al for one year from Sept. 2003 to Aug. 2004. A model of ISO 9223-ISO 9226 that represents the relation between metal corrosions and environmental parameters was used for atmospheric corrosion evaluations. Environmental parameters for these evaluations are time of wetness(TOW), SO₂ and Chloride. Corrosion rates for four metals which are exposed indoors and outdoors were measured on five locations in Jeju Island; Gosan, Seogwipo, Seongsan, Chuna hill and Jeju city. The environmental factor of atmospheric corrosion of Jeju Island for SO₂ class is P0, a clean area. TOW as T3 and T4 indicates that Jeju has the characteristics of a tropical area. Chlorides class within 3 km from the coast show the features of costal area as S2 and S3 classes. Chuna hill show the features of woodland as a S1 class. In Corrosion classes of each site which was measured outdoors is higher than indoors. Gosan is the highest class as the rank of C5, and indicated that they're ranked as C3 or C4.
김귀식(G. S. Kim),박정근(J. G. Park),한세웅(S. W. Han),양경조(G. J. Yang) 한국동력기계공학회 2005 한국동력기계공학회 학술대회 논문집 Vol.- No.-
Jeju-do highly relies on outside sources of energy because of its geographical situation. Recently, it has been necessary to enhance its stable energy sources there by protecting it from rising oil prices and preventing further global warming and the resulting serious environmental disruptions caused by the use of fossil fuels. Therefore, in this study, We investigate at the reserves and the available capacity of other energy sources, such as solar, wind, biomass, wastes and small hydro energy. The results show that the available capacity of solar energy is 123,525 TOE/year, wind energy is 1, 871,748 TOE/year, and biomass energy is 30, 127 TOE/year. Waste energy has an available capacity of 6,629 TOE/year and small hydro energy is estimated at 2,617 TOE/year. The results of the available capacity of clean energy sources show that it is likely double the annual energy consumption of Jeju. Solar energy and wind energy are the greatest potential energy sources, compared to other energy sources. Furthermore, wind energy is available in the highest quantity.
송주형 ( Ju Hyung Song ),예병덕 ( Byong Duk Ye ),윤용식 ( Yong Sik Yoon ),김미정 ( Mi Jung Kim ),양동훈 ( Dong Hoon Yang ),정기욱 ( Kee Wook Jung ),김경조 ( Kyung Jo Kim ),변정식 ( Jung Sik Byeon ),명승재 ( Seung Jae Myung ),양석 대한장연구학회 2011 Intestinal Research Vol.9 No.1
Ganglioneuromas of the gastrointestinal tract are rare, but have an established association with genetic disorders, such as the multiple endocrine neoplasia (MEN) syndrome (type 2b) and neurofibromatosis (type 1). However, solitary ganglioneuromas are not associated with an increased risk for MEN 2b, neurofibromatosis type 1, or any other systemic conditions. Ganglioneuromas of the gastrointestinal tract have been reported to predominantly involve the colon and rectum, and are thereby occasionally detected during colonoscopy or surgery. Although there are no characteristic symptoms of solitary ganglioneuromas, symptoms can be induced by solitary ganglioneuromas, such as abdominal pain, bleeding, or obstruction, depending on the location and size. Herein we report a case of a solitary ganglioneuroma of the ileum. A 34-year-old man sought evaluation at our hospital for anemia. The medical and family histories were benign and there was no history of genetic disorders. The evaluation for anemia revealed iron-deficiency anemia and CT enterography revealed a single mass in the ileum. Laparoscopic resection of the lesion was performed and the pathologic examination confirmed an ileal ganglioneuroma. (Intest Res 2011;9:46-50)
김광운 ( Gwang Un Kim ),예병덕 ( Byong Duk Ye ),변정식 ( Jeong Sik Byeon ),박환성 ( Hwan Sung Park ),옥태진 ( Tae Jin Ok ),양동훈 ( Dong Hoon Yang ),정기욱 ( Kee Wook Jung ),김경조 ( Kyung Jo Kim ),명승재 ( Seung Jae Myung ),양석 대한장연구학회 2011 Intestinal Research Vol.9 No.3
Background/Aims: With the growing volume of screening colonoscopies, the incidence of rectal carcinoids and the number of endoscopic resections for rectal carcinoids are also increasing. However, the prognosis including recurrence and metachronous lesions after endoscopic resection is unclear. Methods: The medical records of 255 patients who had undergone endoscopic resection for rectal carcinoids between October 1999 and April 2010 were retrospectively reviewed. Results: The number of males was 150 (58.8%), and the mean age was 54.1 years (range, 27-85 years). Mean tumor size was 6.9 mm. In total, 162 cases (63.5%) were treated with endoscopic mucosal resection and 93 (36.5%) were treated with endoscopic submucosal dissection. Although endoscopic complete resections were achieved in all cases, the histological examination showed 47 cases with a positive resection margin (18.4%) and three with lymphovascular invasion (1.2%). In the 54 patients with a free resection margin, who were followed for more than 12 months, abdominopelvic computed tomography and endoscopy did not show recurrence after a median of 30.5 and 36 months, respectively. Three patients with lymphovascular invasion did not show recurrence during follow-up period of 13, 30, and 37 months, respectively. Metachronous rectal carcinoids were detected in four patients at 23, 58, 61, and 89 months, respectively, after initial endoscopic resection, leading to a second endoscopic treatment. Conclusions: Small rectal carcinoids completely resected grossly and pathologically without lymphovascular invasion appear to have low probability of short-term recurrence. However, considering the slow growth rate of carcinoids, long-term follow-up for recurrence and metachronous carcinoids is required. (Intest Res 2011;9:217-224)