Characteristics of Biodegradable PLA Clay nanocomposite films prepared by melt Extrusion process

조태웅,전승호,김성우 한국고분자학회 2010 한국고분자학회 학술대회 연구논문 초록집 Vol.2010 No.4

비상생존 식품에 관한 연구

조태웅,이계열,이종관 공군본부 의무감실 1969 항공의학 Vol.17 No.1-2

노동생산성 향상을 위한 유해작업환경관리에 관한 연구

조태웅,유익현,박성애 한국환경보건학회 1976 한국환경보건학회지 Vol.3 No.1

This study was carried out to evaluate the harmful factors in working environments and to investigate the labor productivity after improvement of environments, surveying 93 industrial establishments of 10 industries located in Youngdeungpo industrial area in Seoul. The results obtained were as follows: 1) The highest noise level of 125dB(A) was indicated at the rolling process of transport equipment manufacturing industry. 2) The best illumination level was shown in precise machinery industry and the worst was indicated in rubber products, metallic products and transport equipment manufacturing industries. 3) Thermal conditions were above threshold limit value (TLV) at more than two processes of all industries except printing industry. 4) The highest dust concentration was determined in textile and wearing manufacturing industry. 5) Organic solvents were detected at 52 processes in 93 industrial establishments and 33 processes of them showed higher than TLV. The results about harmful chemicals were as follows: a) sulfur dioxide ($SO_2$)was determined higher than TLV on welding process of metallic product manufacturing industry and heat treatment process of transport equipment manufacturing industry. b) Carbon monoxide (CO) concentration was 700ppm at heat treatment process of transport equipment manufacturing industry, indicating 14 times of TLV. c) vinylchloride concentration in the air of PVC raw material mixing process and PVC preparation process of chemical product manufacturing industry was determined higher than TLV. d) Hydrochloride (HCl) concentration in the air of wire expanding process of transport equipment manufacturing industry was determined higher than TLV. 7) Higher values of lead concentration than TLV were determined at lead welding metallic product manufacturing industry and type planting process of process of printing industry, $1.8mg/m^3$ and $0.3mg/m^3$ respectively. 9) 22, 968 of 52, 855 workers (i.e. 43.5%) in 93 industries were exposed to various harmful agents. 10) It was found that the improvement of illumination in electric apparatus manufacturing industry (from 20~40 lux to 420 lux) resulted in an increase in productivity of 6.5% per capita and a decrease in faulty products of 19%. 11) Improvement of environments using local exhaust ventilation system resulted in a decrease of harmful substances lower than TLV and an increase in productivity of 11.4%. 12) Improvement of shovelling tools based on ergonomics resulted in a reduction in energy expenditure of 25.3% and an increase in productivity of 32.2% per capita.

결장직장암과 혈관내피성장인자 발현과의 상관관계

조태웅,임성철,김성수,민영돈,김경종 대한대장항문학회 2008 Annals of Coloproctolgy Vol.24 No.6

Purpose: The neovascularization is an essential factor for the growth of solid organ cancer and especially vascular endothelial growth factor (VEGF) has been known to the very important mediator of neovascularization. Thus, this study was searching that expression of VEGF in colorectal cancer correlate to clinicopathologic factors. Methods: We analyzed 93 patients with sporadic colorectal cancer who underwent colectomy and their specimens were studied immunohistochemistry at Chosun University hospital from March, 2002 to November, 2005. Results: The expression rate of VEGF was 61 cases of all (65.6%). There were no significant relation VEGF expression to age, sex and lymph node metastasis. But, VEGF expression in colon cancer was 80.5% rather than 53.8% in rectal cancer (P=0.010). Correlation with T staging, expression of VEGF was 10.0% in pT0, 62.5% in pT1, pT2 and 77.2% in pT3, pT4 (P<0.0001), and correlation with TNM staging, expression of VEGF was 10.0% in stage 0, 63.2% in stage I, 72.0% in stage II, 73.3% in stage III and 100.0% in stage IV (P=0.001). Conclusions: Expression of VEGF in colorectal cancer closely correlates with cancer progression and VEGF was more expressed in colon cancer than rectum. Purpose: The neovascularization is an essential factor for the growth of solid organ cancer and especially vascular endothelial growth factor (VEGF) has been known to the very important mediator of neovascularization. Thus, this study was searching that expression of VEGF in colorectal cancer correlate to clinicopathologic factors. Methods: We analyzed 93 patients with sporadic colorectal cancer who underwent colectomy and their specimens were studied immunohistochemistry at Chosun University hospital from March, 2002 to November, 2005. Results: The expression rate of VEGF was 61 cases of all (65.6%). There were no significant relation VEGF expression to age, sex and lymph node metastasis. But, VEGF expression in colon cancer was 80.5% rather than 53.8% in rectal cancer (P=0.010). Correlation with T staging, expression of VEGF was 10.0% in pT0, 62.5% in pT1, pT2 and 77.2% in pT3, pT4 (P<0.0001), and correlation with TNM staging, expression of VEGF was 10.0% in stage 0, 63.2% in stage I, 72.0% in stage II, 73.3% in stage III and 100.0% in stage IV (P=0.001). Conclusions: Expression of VEGF in colorectal cancer closely correlates with cancer progression and VEGF was more expressed in colon cancer than rectum.

만성저산소 폭로가 흰쥐의 위액분비에 미치는 영향

조태웅 공군본부 의무감실 1970 항공의학 Vol.18 No.1-2

교액성 폐쇄공탈장 1예

조태웅,민영돈,김경종,정권율,강성인,류소연,임성철 朝鮮大學校 附設 醫學硏究所 2006 The Medical Journal of Chosun University Vol.31 No.1

Obturator hernia is a rare pelvic hernia, occuring most frequently in elderly, extra-thin or debilitated women. Because of the anatomic character of the obturator foramen and the nonspecific symptoms in the presence of the hernia, the risk of strangulation of the herniated bowel is high, which leads to high morbidity and mortality rate. The authors experienced an unusual case of left obturator hernia with strangulation of the small bowel in an 80-year old female. The hernia was diagnosed by abdomino-pelvic computed tomography (CT) scan. Through the lower midline transperitoneal approach, resecting the strangulated small bowel, the hernia sac was ligated and the obturator foramen was repaired using adjacent broad ligament. We report these findings with a brief review of the literature.

괴사된 소장을 포함한 Littre's Hernia 1예

조태웅,김경종,민영돈 대한외과학회 2007 대한외과학회 학술대회 초록집 Vol.2007 No.5

有害作業環境管理에 關한 硏究

金聲天,趙泰雄 가톨릭대학산업의학센타 산업의학연구소 1973 韓國의 産業醫學 Vol.12 No.2

This Study was conducted in order to provide the methods for the economic and efficient management of harmful working environments on thirty-five industrial establishments in Young Deung Po area over a period of three months from April 1 to July 1, 1972. The results obtained were as follows: 1. Cutting process room in electrical machine industry produced the highest noise level as 96 dB(A) and chemical industry had the lowest noise level (74 to 88 dB(A)). 2. Illuminations were poor in chemical industry (20 to 40lux) and best in precision machine manufacturing industry (150 to 1,000 lux). 3. Dust concentration was highest at lathe process room in precision machine manufacturing industry(7.5mg/㎥ more than Threshold Limit Value 5mg/㎥ as the second class of dust) and less than TLV in others. 4. The concentration of organic solvents in air exceeded the TLV in every industries surveyed. 5. The concentration of vinylchloride in the air was 700ppm at brown process room in chemical industry. 6. Inorganic lead fume was 0.07~0.08mg/㎥ in electrical machine industry. 7. The concentration of chromate was 0.03mg/㎥ at Chrome plating process room in precision machine manufacturing industry. 8. No. of workers exposed to harmful working environment of a total 12,979 workers in thirty-five industries were 9,512 as 73.3% of all. 9. After a change for the better of poor illumination, increased rate in productivity in electrical machine manufacturing industry was increased to 14.3% and reduction rate of faulty products were decreased to 6.3% for one month. 10. After a change for the better of bad local exhaust system, concentration of organic solvents in the air were decreased remarkably and productivity was increased to 7.5% for one month.

폐쇄공 탈장(Obturator Hernia) 증례보고 1예

조태웅,민영돈,김경종 대한외과학회 2005 대한외과학회 학술대회 초록집 Vol.2005 No.10

仁川市 一圓에서 我t培된 野菜類中의 重金屬 含量에 關한 硏究

趙泰雄 한국환경보건학회 1986 한국환경보건학회지 Vol.12 No.1

This study was carried out to evaluate the heavy metal content in vegetables such as lettuce, chinese cabbage, Sesame leaf, radish, cucumber and pumpkin that cultivated in Inchon area. The results obtained were as fol1ows : As a whole, the heavy metal content in vegetables was the higher at industrial area and the lower at residential and green-belt area.