RI 폐기물 내 방사성요오드 분석을 위한 분리 및 회수

강상훈,한선호,이흥래,지광용,이인구,Kang, Sang-Hoon,Han, Sun-Ho,Lee, Heung-N.,Jee, Kwang-Yong,Lee, In-Koo 한국방사성폐기물학회 2007 방사성폐기물학회지 Vol.5 No.4

Various kinds of RI wastes are discharged from licensed organizations of radioisotopes les such as hospitals and clinic organizations, educational organizations, research institutions, and public organizations. Radioiodines such as $^{125}I\;and\;^{131}I$ are radioisotopes mainly used in nuclear medicine and industry. A method for the determination of radioiodines in RI wastes has been applied to measure low level activity using acid decomposition method and HPGe gamma ray spectrometer. Prior to analysis of real samples, $^{131}I$ reference solution and 10 g of yellow tissue paper was added to flask in mantle and was heated in 100 mL of 0.4 N $K_2Cr_2O_7$ and 100 mL of 9 M $H_2SO_4$, and then distilled after adding 10 mL of 30% $H_2PO_3$ and 1 mL of 30% $H_2O_2$. The condensed iodine by circulator was extracted into $CCl_4$, then back-extracted into the aqueous phase with 10 mL of 5% $K_2SO_2$ solution. Finally, $^{131}I$ was measured at 364.48 keV using HPGe gamma ray spectrometer after precipitation and filtration. Chemical yield of three steps such as acid decomposition process, chemical separation process, and precipitation and filtration process was more han 94% respectively, MDA(Minimum Detectable Activity) of $^{131}I$ at this analytical condition was 0.6 Bq/g.

다양한 온도 환경에 따른 3D 프린트 복합재료의 기계적 물성 평가

강상훈,김도현,서형석,Sang-Hun Kang,Do-Hyeon Kim,Hyoung-Seock Seo 한국복합재료학회 2023 Composites research Vol.36 No.3

Currently, there are many discussions about composite materials and 3D printed composite material to weight reduction of ships. A test was conducted to confirm the applicability of the 3D printed composite material to ships and offshore structures by linking the 3D printing technology with excellent productivity and the composite material with corrosion resistance and lightweight characteristics in salt water environments. In order to apply the 3D printed composite material used in this paper to ships and offshore structures, the temperature environmental effects that can be exposed in the marine environment should be considered. Therefore, the tensile test was conducted with specimen of Carbon + Onyx, Carbon + Nylon, HSHT glass + Onyx, HSHT glass + Nylon material in low temperature (-50℃), room temperature (20℃), and high temperature (50℃) environments that can be exposed to the marine environment. As a result of the tensile test, the carbon + onyx specimen showed the highest tensile strength and the HSHT glass + onyx specimen showed the highest tensile strain. In addition, by analyzing the tested specimens, the failure mode of the 3D printed composite material specimens exposed to various temperature environments was analyzed.

신이청매음(辛夷淸肺飮)이 알레르기 비염(鼻炎)에 미처는 효과(效果)에 대한 실험적(實驗的) 연구(硏究)

강상훈,심성용,변학성,김경준,Kang, Sang-Hun,Sim, Sung-Yong,Byun, Hak-Sung,Kim, Kyung-Jun 대한한방안이비인후피부과학회 2005 한방안이비인후피부과학회지 Vol.18 No.3

Objectives: It has a growing interest in the prevention and medical treatment of allergic rhinitis. According to many studies, it's known that Sinicheongpye-um has the inhibitory effect on the allergic rhinitis. We have studied effect of the mice on OVA-induced Production of IL-4, IL-5, $Interferone-{\gamma}$ by Murine Splenocytes and effect of OVA-induced Total IgE. Methods: Mixing Ovalbumin(OVA) $10{\mu}g$ into PBS(phoshate buffered saline) and $Al(OH)_3$, gel solution and changing into $1\;m{\ell}$, we made it into OVA solution. That was administered to normal group. After the last administration into abdominal cavity, we caused allergic rhinitis in nasal cavity of mouse of control group and sample group administering 0.1% solution dropwise 3 times a day for 7 days. Keeping separated serum at -20 degree and after refloating spleen cells, cultivating the cells and centrifuging the upper liquid and keeping it at -20 degree, we measured the amount of IL-4. IL-5, $Interferone-{\gamma}$ and OVA-induced Total IgE by ELISA. Results: 1. In Total IgE, Sinichengpae-um treated group was proved significant inhibitory effect.(p<0.05) 2. In IL-4 study, Sinichengpae-um treated group was proved significant inhibitory effect.(p<0.005) 3. In IL-4 study, Sinichengpae-um treated group was proved significant inhibitory effect.(p<0.001) 4. In $Interferone-{\gamma}$ study, Sinichengpae-um treated group showed a increasing tendency. Conclusion: Based on the above result, it is considered that Sinichengpae-um has the inhibitory effect on the allergic rhinitis of mice and suggested thai it could be used in relieving patients of the symptoms which are caused by allergic rhinitis.

악교정 수술후 항생제 투여의 효용성 : 술후 항생제 투여 여부에 따른 창상감염 빈도

강상훈,유재하,이충국,Kang, Sang-Hoon,Yoo, Jae-Ha,Yi, Choong-Kook 대한악안면성형재건외과학회 2007 Maxillofacial Plastic Reconstructive Surgery Vol.29 No.3

This study observed the frequency of post-surgical infection according to post-surgical application of antibiotics in order to evaluate the benefits of the use of antibiotics after the orthognathic surgery. 349 patients without any specific medical history were divided into two groups depending on whether or not antibiotics had been applied after the surgery. The mean(SD) age of the 349 patients was 22.7(${\pm}4.25$) with a male-female ratio of 168:181. 226 patients received only 1.0g of a third-generation cephalosporin(Cefpiramide) intravenously 30 minutes prior to the surgery. Likewise, 123 patients received 1.0g of Cefpiramide 30 minutes prior to the surgery and twice daily longer than the third day after surgery. The mean(SD) duration of administration was 4.75(${\pm}0.89$) day. The patients were evaluated after surgery for any postoperative infections according to the criteria: purulent drainage from a wound, spontaneous wound dehiscence accompanied by swelling, pain, and fever around the wound. However, 14 patients of 226 patients received antibiotics only prior to the surgery developed postoperative infection, 2 patients of 123 patients received antibiotics longer than postoperative 3 days developed postoperative infection. Postoperative infection frequency showed no significant difference between the two groups(p=0.094). Also, bi-maxillary operation and mandibular operation alone, showed no significant difference in the frequency of post-surgical infection when antibiotics had been continuously used after the surgery. From this study, postoperative use of antibiotics seems to be unnecessary with view of the little significance of the factors that could affect the wound infection.

일제강점기 박람회 건축을 통해 본 건축양식의 상징성

강상훈,Kang, Sang-Hoon 한국건축역사학회 2006 건축역사연구 Vol.15 No.3

This research examines symbolic meanings of architectural style of Japanese ruling era of Korea through analysis of Expo buildings. Expo buidings of Joseon Product Evaluation Expo(1915), Joseon Expo(1929), and Joseon Grand Expo(1940) are chosen as subjects of this research. Expos held in Korea since 1945 were creatures of colonial reign and their objectives are advertising the advancement of Japan. New and latest architectural styles of Western countries were used as a symbol of advancement in non-western countries. Renaissance style and Secession style in Joseon Product Evaluation Expo and Modernism style in Joseon Expo were introduced as architectural styles that symbolize advancement. On the contrary, the traditional architectural style of Joseon Dynasty was distorted as symbol of backwardness. Latest Western Architectural Styles were used elaborately and Intentionally to symbolize advancement and industrialization by Japanese ruling power and companies. Specially, Modernism style operating as 'symbol of advancement' is characteristic of non-western society in attempt to proceed Modernization through Westernization. Also, it can be suggested that architectures in Modernism style are used in ways to symbolize the advancement of the colonial reign authorities within the colonial society.

자초(紫草)가 HaCaT 세포의 사이토카인 유전자 발현에 미치는 영향

강상훈,김경준,Kang, Sang-Hoon,Kim, Gyung-Jun 대한한방안이비인후피부과학회 2013 한방안이비인후피부과학회지 Vol.26 No.1

Objective : Propionibacterium acnes (P. acnes) is a major pathogenic bacteria for acne vulgaris. This study was performed to evaluate the effects of Lithospermum erythrorhizon extracts on the inflammatory cytokines gene expression by P. acnes in human keratinocytes, HaCaT cell line. Methods : Anti-bacterial activity and cytotoxicity of LE extracts was analyzed by agar plate culture and XTT assay. The cytokines gene expressions were assessed by real time RT-PCR for IL-8, MCP-1 and TNF-${\alpha}$. During the cell culture and treatments, amounts of secreted TNF-${\alpha}$ were measured by ELISA. Translocation of transcription factor NF-${\kappa}B$ from cytoplasm into nucleus was observed by immunocytochemistry and confocal microscopy. Results : There were no anti-bacterial effects and cytotoxicity as high as $1,000{\mu}g/ml$ of LE extracts in XTT assay. Transcription levels of inflammatory cytokines, IL-8, MCP-1 and TNF-${\alpha}$ were increased by P. acnes in HaCaT. LE extracts decreased the upregulated gene transcription levels. However, amounts of secreted TNF-${\alpha}$ were similar in HaCaT cells with P. acnes and LE extracts. Translocation of NF-${\kappa}B$ into nucleus by P. acnes was significantly inhibited by LE extracts. Conclusions : From the results of this study, LE extracts have anti-inflammatory effects on HaCaT cells by P. acnes that decreased the mRNA expressions of IL-8, MCP-1 and TNF-${\alpha}$. This anti-inflammatory effects of LE extracts could provide the potential of therapeutic substance for acne vulgaris.

악교정 수술시 술후 환자의 증상변화와 항생제 투여와의 관계

강상훈,유재하,이충국,Kang, Sang-Hoon,Yoo, Jae-Ha,Yi, Choong-Kook 대한악안면성형재건외과학회 2007 Maxillofacial Plastic Reconstructive Surgery Vol.29 No.4

This study compared and evaluated the variation of patients' symptoms depending on whether or not antibiotics had been used in the recovery period after the orthognathic surgery. 28 patients, with no particular medical history, were divided into two groups on the basis of whether antibiotics had been applied after the orthognathic surgery. All patients had been operated on maxilla and mandible simultaneously and were investigated with any symptom changes within the postoperative 4 days. Among the symptoms that could follow after the orthognathic surgery, 6 symptoms were checked every 24 hours on 5 points basis. Phases of each symptom improvements were checked and analyzed by ANOVA statistical method. Aspects of symptom changes according to application of antibiotics showed no statistical significance. Symptoms, except for swelling, showed continuous improvements after the surgery. Swelling increased until postoperative $2^{nd}\;day$, and then started to decrease. This study shows that post-surgical use of antibiotics has no significance provided that post-surgical infection had not occurred.

하악 제3대구치 발치를 위한 예방적 항생제의 효용성

강상훈,김정인,박원서,이충국,이상휘,Kang, Sang-Hoon,Kim, Jung-In,Park, Won-Se,Yi, Choong-Kook,Lee, Sang-Hwy 대한구강악안면외과학회 2008 대한구강악안면외과학회지 Vol.34 No.3

This study analyzed the incidence of wound infection after the operation of mandibular third molar extraction in relation with antibiotic prophylaxis with the object of young and healthy patients. The study object was 1,177 mandibular third molars of 850 men of 20 to 25 years old without any specific systemic disease. Three methods of preventive antibiotic medication were selected according to the preventive antibiotic medication previously reported; three experimental groups were selected based on them, and the antibiotic used was amoxicillin($^{(R)}Kymoxin$, Yuhanyanghaeng, Seoul). The group 1 includes the patients that took the antibiotic orally before the operation(one hour earlier, 500mg) and for three days after the operation(250mg per time, three times/day), the group 2 is the ones that took the same antibiotic orally only once about one hour before the operation(500mg), and the group 3 did not take any antibiotics before and after the operation. And to compare the difficulties and the degrees of extraction during operations which can be possibly related to the wound infection after the operations, the mandibular third molars' impacted depths and extraction methods were investigated as well. To check if the wound was infected, observations with an internal of one week were performed twice after the operation, and the meaningfulness of the infection incidence was verified through Chi-square test using SPSS program(SPSS Inc., IL, USA). There was no statistically significant difference between the antibiotic medication methods and the wound infection incidence after the operation among the experimental groups. As examining the relations between the mandibular third molar operation methods and the wound infection incidence after the operation, there existed a statistically meaningful difference in the infection incidence according to the operation methods(p=0.020). And there was no statistically significant difference in the wound infection incidence according to the impacted depth of the mandibular third molar. Therefore, it is thought that there exists little necessity of prophylatic antibiotics medication when extracting the mandibular third molar of young and healthy men without any systemic disease in general; however, in case when it is expected that the possibility of infection will be high or the wound on the tissue will be severe, it is sure that the prophylactic antibiotics medication will be necessary.

감귤 신품종 ‘감평’의 적과시기에 따른 열과 발생정도

강상훈(Sanghun Kang),이중석(Joong Seuk Lee),강종훈(Jong Hoon Kang),진석천(Seok Cheon Jin),오현우(Hyun Woo Oh),박영철(Young Chul Park),강성근(Sung Geun Kang) 한국원예학회 2012 한국원예학회 학술발표요지 Vol.2012 No.5

착과량과 토양수분이 도입 만감류 ‘감평’의 열과 발생에 미치는 영향

강상훈(Sang Hun Kang),강종훈(Jong Hoon Kang),박영철(Young Chul Park),강성근(Sung Geun Kang) 한국원예학회 2011 한국원예학회 학술발표요지 Vol.2011 No.5