이달의 X-선 : 중엽증후군과 폐렴을 유발한 기관지의 성장을 보이는 기관지 지방종 1예

박세종 ( Se Jong Park ),장경순 ( Kyung Soon Jang ),김도민 ( Do Min Kim ),권재성 ( Jae Sung Kwon ),이성근 ( Sung Geun Lee ),김명선 ( Myung Sun Kim ),강종렬 ( Jong Yeal Kang ),김응수 ( Eung Soo Kim ),이병두 ( Byung Doo Lee ) 대한결핵 및 호흡기학회 1999 Tuberculosis and Respiratory Diseases Vol.47 No.4

샥스핀 가공 중 사용된 메타규산나트륨 분석

박세종(Se-Jong Park),장수진(Su-Jin Jang),최재천(Jae-Chon Choi),김미혜(Meehye Kim) 한국식품과학회 2015 한국식품과학회지 Vol.47 No.2

메타규산나트륨은 우리나라 식품첨가물공전에 등록되어 있는 품목으로 식용유지류의 여과보조제의 목적 이외에는 사용할 수 없으며, 최종식품 완성 전에 제거하도록 규정되어 있다. 그러나 최근 샥스핀 등 수산물에 중량 증량의 목적으로 메타규산나트륨을 불법 사용하는 사례가 지속적으로 발생함에 따라 메타규산나트륨의 사용 여부를 판별할 수 있는 분석법의 필요성이 대두되고 있다. 그러나 메타규산나트륨의 수용액은 강알칼리성용액으로 식품에 첨가되면 해리되어 그 자체로 분석할 수 없으며, 규소 양의 측정을 통해 간접적인 방법으로 추정할 경우 시료 자체에 천연적으로 존재하는 규소와 구분해야 하는 어려움이 있다. 따라서 본 연구에서는 메타규산나트륨의 첨가 여부를 판별하기 위한 기초 자료 확보를 위해 메타규산나트륨 수용액에 가공되지 않은 상어지느러미를 침지하여 중량의 증가, pH 및 규소 함량 변화를 측정하였고, 이를 모니터링 결과와 비교하였다. 그러나 Robberecht 등(7)의 연구결과 6종의 어류에서 규소가 1.77-84.19 mg/kg의 범위에서 검출된 결과에서 알 수 있듯이, 수산물의 종류와 개체 간에 규소 함량의 편차가 크게 나타날 수 있기 때문에 향후 샥스핀의 규소 함량 모니터링을 지속적으로 수행하여 데이터베이스를 좀 더 보강할 필요가 있을 것으로 판단되며, 그 이후에 대조군과 pH, 수분 및 규소 함량 비교를 통해 메타규산나트륨 사용 여부를 유추해 볼 수 있을 것으로 생각된다. According to the Korea Food Additives Code, sodium metasilicate is permitted for use as a filtering agent for edible oils and fats. Sodium metasilicate is currently used as a food additives to increase the weight of shark fins. In this study, we developed an analytical method to quantify sodium metasilicate in food. Sodium metasilicate content was estimated by measuring the moisture content, pH and silicon content of shark fins. Silicon content was analyzed using inductively coupled plasma-optical emission spectrometry (ICP-OES) following microwave-assisted digestion with HNO<SUB>3</SUB> (65%) and H<SUB>2</SUB>O<SUB>2</SUB> (30%). Shark fin total silicon content was 7.17±8.92 mg/kg, while the soluble silicon content was 2.34±3.80 mg/kg. After soaking raw shark fin in an aqueous solution of sodium metasilicate, fin weight, pH and silicon content were measured. These results would be used as the basic information for shark fins safety management.

반능동형 머플러의 배기가변밸브 스프링 적정상수에 관한 연구

박세종(Se Jong Park),박경석(Kyoung Suk Park),서호철(Ho Chul Seo),손성만(Sung Man Son) Korean Society for Precision Engineering 2006 한국정밀공학회지 Vol.23 No.5

The muffler which reduce the exhaust noise and vibration from engine influence on the engine performance. Recently, exhaust variable valve has set up in the muffler controls the backpressure in the exhaust system. And the backpressure variation according to the exhaust variable valve opening has developed the engine performance. First, the preceding of structural analysis is needed and simulation experiment is requested for the study on the design factor to influence on the operation of the exhaust variable valve. In this study, setting up the various variables according to each composition element needed for the structural analysis of the exhaust variable valve, it is experimented the analysis on the influence of each design factor with the calculation of stress distribution and the displacement to cause about the backpressure for the valve through parameter study.

문화관광(文化觀光)의 정체성 확립에 관한 일시론(一試論)

박세종 ( Se Jong Park ) 경기대학교 관광종합연구소 2011 여가관광연구 Vol.18 No.-

GC-FID를 이용한 식품 중 유동파라핀 함량 분석

박세종(Se-Jong Park),최재천(Jae-Chun Choi),임호수(Ho-Soo Lim),장수진(Su-Jin Jang),김소희(So-Hee Kim),김미혜(Meehye Kim) 한국식품과학회 2013 한국식품과학회지 Vol.45 No.5

본 연구에서는 GC-FID를 이용하여 식품첨가물공전에 사용량이 정해져 있는 빵류, 캡슐류, 건조과실류·채소류 및 과실류·채소류 중 유동파라핀의 함량을 측정하였다. 시료에서 n-hexane으로 유동파라핀을 추출하고 KMnO4 산화반응을 통해 추출물 중불포화탄화수소의 극성을 증대시킨 다음 aluminium oxide를 충진한 SPE 카트리지로 정제하여 GC-FID로 측정하였다. 검출한계와 정량한계는 각각 10 ㎎/㎏과 20 ㎎/㎏으로 개별 n-alkane으로 정량하는 방법이 아닌 넓은 봉우리로 나타나는 유동파라핀의 면적의 합으로 정량하는 문헌들(15,17)의 값과 유사하게 나타났다. 유동파라핀은 빵류, 건조과실류·채소류 및 캡슐류에서 이형제 등으로 사용되고 있으나 최종 완제품에서 사용기준 이하로 검출되었고, 과실류·채소류에서 모두 불검출로 나타남에 따라 안전한 수준으로 관리되고 있음을 알 수 있었다. Liquid paraffin is a mixture of heavier alkanes derived from petroleum. It can be used as a lubricant in processing machinery, as a coating agent, or as a releasing agent. The purpose of this study was to analyze liquid paraffins in foods by using a gas chromatography-flame ionized detector (GC-FID). Liquid paraffin was extracted from the food samples using n-hexane. Non-polar aromatic or olefinic co-extractives were removed by alkaline permanganate oxidation followed by clean up on an aluminium oxide SPE cartridge before the GC-FID analysis. The results of recovery tests were 91.5-103.2%. Based on this optimized method, we investigated the amount of liquid paraffin in various food samples purchased from domestic markets. The levels of liquid paraffin in bread were 95.5±156.0 ㎎/㎏ (0.008%), those in capsules were 40.2±54.5 ㎎/㎏ (0.001%), and those in dried fruits and vegetables were 3.0±18.1 ㎎/㎏ (0.0001%). No liquid paraffin was detected in fresh fruits and vegetables. We propose that our method can be used to monitor and detect liquid paraffin in foods for food safety management.

문화관광 연구의 이론체계 구축을 위한 방향 모색

박세종(Se Jong Park) 한국관광연구학회 2014 관광연구저널 Vol.28 No.2

The main purpose of the study is to examine the latest research trends on cultural tourism. How ‘culture’ and ‘cultural tourism’ are being discussed in related social sciences. Therefore, using the content analysis, articles in the Annals of Tourism Research(ATR) are analyzed in terms of theme, key words, definition of key concepts, applied methods and theories, and focuses on analytical contexts. The total of analyzed articles are 608 for the period of 1998~2010. The results of the study are as following; Firstly, the analysis shows that most criteria are similar. The rationale of cultural tourism as a independent discipline is not enough because there are no differences between existing tourism studies and cultural tourism researches. However, cultural tourism has been recognized by researchers as a field of tourism studies or a discipline. Secondly, existing cultural tourism researches are the studies on tourism activities in terms of culture. If the focus transferred to tourism culture or leisure culture within the boundary of cultural science, the independent concepts of cultural tourism can be established. Thirdly, if cultural tourism is to study visitors who have motivations to understand destination`s culture, main themes must be on backpackers, theme travelers and SIT(special interest tourists). Lastly, most cultural tourism studies have been carried out by qualitative approaches. Therefore, cultural tourism studies can be placed in the qualitative subject area until the knowledge is accumulated.

역사문화 관광객의 재방문 의도에 관한 연구

박세종 ( Park Se-jong ),이원석 ( Lee Won-seok ),문준호 ( Moon Joon-ho ) 한국이벤트컨벤션학회 2018 이벤트 컨벤션 연구 Vol.14 No.2

The main purpose of this study is to understand the main behaviors of tourists visiting the historical and cultural space. To explain these dependent variables, the study selected perceived congestion, convenience, and cultural awareness attitudes as independent variables. In addition, this study tried to verify the mediation effects to clarify that the relationship between convenience variables, cultural awareness attitudes, and revisit intention in existing research is more or less mixed. In order to test these mediation effects, Baron & Kenny’s framework was used. This study also explored the behavior of tourists visiting historical and cultural space using gender and perceived congestion as independent variables. The research collected data using online questionnaires for people who have visited historical and cultural attractions in Korea. For data analysis, frequency analysis, correlation analysis, exploratory factor analysis and multiple regression analysis were used. The results of the analysis showed that the attitude of tourists to history and culture has a positive effect on the intention to revisit. In addition, it was found that female participants had higher intention to revisit. Finally, this study examined that attitudes toward history and culture show that the interrelationships between convenience and revisit intention are mediated.

테이블 객체 모델링을 이용한 웹문서의 제목추출

박세종(Se-Jong Park),윤주형(Ju-Hyung Yun),이승욱(Seung-Yuk Lee),한영식(Young-Suk Han) 한국정보과학회 2003 한국정보과학회 학술발표논문집 Vol.30 No.2Ⅰ

한국어 웹 문서에는 일반적으로 제목이 명시가 되어 있으므로 텍스트를 요약하는 방식의 제목추출과는 달리 여러 테이블 형태로 이루어진 웹 문서의 특성을 고려하여 제목에 해당하는 테이블 객체를 찾아내야 한다. 웹 문서를 테이블 객체의 리스트로 보고, 이들을 휴리스틱 규칙에 의해서 본문 후보와 이를 기분으로 하는 제목 후보 객체들로 구분하는 단계와 제목 후보들 간의 확률적 분포 값과 본문과의 언어적 유사도를 이용하여 제목 개체를 결정하는 단계를 통하여 제목을 인식한다. 인식의 정확성에 기여하는 것은 제목과 본문 객체를 구분하는 규칙 그리고 제목의 확률분포 및 언어적 유사정도 등이며 이들 각 정보가 정확성에 기여하는 정도를 실험하였다. 무작위로 추출된 500개의 다양한 양식의 웹문서를 대상으로 실험함 결과 제목인식 정확성은 95.1%였다.

[工場紹介] 세종공업주식회사

박세종(PARK SE JONG) 한국자동차공학회 1985 오토저널 Vol.7 No.4

충남 서부지역 돈군에서 분리된 Bordetella bronchiseptica의 성상에 대한 연구

박세종 ( Se Jong Park ),안식욱 ( Shin Uk An ),신인환 ( In Hwan Shin ),정태수 ( Tae Su Chung ),전무형 ( Moo Hyung Jun ) 한국동물위생학회 1995 한국동물위생학회지 (KOJVS) Vol.18 No.2

During 2 years from Octorber 1992 to April 1994, prevalence of general respiratory diseases and atrophic rhinitis in the pig herds located in the Western Chungnam was investigated, and isolation of B. bronchiseptica was attempted for the pigs manifested with the clinical signs of atrophic rhinitis(AR). The isolates were characterized and identified in aspects of biochemical properties, antigenicity, drug sensitivity and pathogenicity. The results obtained through the experiments are summarized as follows; 1. During 2 years of investigation, the overall prevalence of the general respiratory diseases in the pig herds in Western Chungnam was 35.3%, consisting of 35.1% in the pig farms and 38.8% in a slaughter house. The prevalence by age groups accounts for 9.2% in adults, 44.7% in rearings and 25.3% in sucklings. By farm size, The highest prevalence of 56.5% was observed in the smallest farm with 1 to 200 heads. 2. The prevalence of clinical cases of artrophic rhinitis was recorded by 12.7% in the group that is the sows and piglets vaccinated, 28.9% in the group that is the sows only vaccinated and 39.8% in the group of the non-vaccinated groups. In the slaughter house, 53(24.8%) of 214 pigs examined exhibit the AR lesions. 3. A total of 189 strains of B. bronchiseptica were isolated from the pig herds. Isolation rates were 12.6% in the group that is the sows and piglets vaccinated, 34.1% in the group that is the sows only vaccinated and 45.7% in the group of the non-vaccinated groups. Isolation rate in the specimen from the slaughter house was 93(43.5%) of 214 pigs examined. Of the AR-non-vaccinated group, the piglets aged between 61 to 90 days revealed the highest isolation rate of 58.5%. 4. The titers of antibody against B. bronchiseptica were measured by tube agglutination test. The group that is the sow and piglet-vaccinated showed the highest titer of 640-2,560 in sow and 640->5,120 in piglet. The group that is the SOWS only-vaccinated revealed 640-2,560 in sows and 640-1,280 in piglets. Both of the vaccinated groups showed 100% positive reaction. The group of the non-vaccinated showed relatively lower titer of 0-1,280 in both of sows and piglets. The positive rate of the sera obtained from the slaughter house was 53.3% with the antibody titer of 0-1,280. 5. Biochemical and serological properities of 189 isolates were very similar to those of the reference B. bronchiseptical phase I type, indicating that most of isolates are B. bronchiseptica phase I type. 6. In antimicrobial drug susceptibility, 87.3% of 189 isolates was susceptible to chloramphenicol, 79.9%, to amikacin, 64.6%, to cephalothin and less than 35.4% to others. 7. In agar-gel immunodiffusion and SDS-PAGE analysis, the isolates presented the identical antigenicity and protein profiles to the reference standard strains. 8. The whole cells and bacterial filtrates of the isolates were inoculated to guinea pigs and mice. The isolates showed the high pathogenicity and dermonecrotoxiciy.