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중성자 핵반응을 이용한 원소 검출기술 - 즉발감마선 중성자 방사화분석법을 이용한 검출기술 -
송병철,박용준,지광용,Song, Byung Chul,Park, Yong Joon,Jee, Kwang Yong 한국분석과학회 2003 분석과학 Vol.16 No.5
즉발감마선 중성자방사화법 (PGAA)은 시료내 미량 및 주원소를 빠르게 비파괴적으로 분석하는 방법으로 주로 광물, 금속, 석탄, 시멘트, 석유, 코팅, 제지 등 다양한 산업체에서 실시간 분석법으로 매우 유용하다. 이 방법은 제약과 관련된 산업체 또는 연구업무에도 활용되며, 마약 또는 폭발물과 같은 위험물질의 탐지에도 이용되고 있다. 본 총설은 즉발감마선 중성자 방사화법의 현재의 기술현황과 앞으로 연구추진 경향에 대하여 서술하였다. PGAA 시스템은 중성자 선원, 증성자 핵반응으로부터 발생하는 즉발감마선을 측정하기위한 다중채널분석기와 A/D 변환기 등의 전자모듈과 고분해능 HPGe 검출기로 구성된다. 속중성자의 콤프턴 산란에 의한 높은 바탕값은 감마-감마 동시계수장치의 도입으로 개선될 수 있다. 현재 $^{252}Cf$를 사용한 즉발감마선 중성자 방사화 장치는 수용액중에 존재하는 원소들의 실시간분석을 위해 한국원자력연구소에서 개발중에 있다. 이 장치는 다양한 마약 및 폭발물 또는 화학무기의 탐지에도 응용될 수 있다. Neutron induced prompt gamma activation analysis (PGAA) offers a nondestructive, sensitive and relatively rapid method for the determination of trace and major elements and is proven to be convenient for online analysis of minerals, metals, coal, cement, petrochemical, coating, paper as well as many other materials and products. The technique has found many uses in medicine, industry, research, security and the detection of contraband items. This report reviews the present status and future trends of the PGAA techniques. Requirements for the system are neutron source, high resolution HPGe detectors with a high-voltage power supply, an amplifier, analog-to-digital converter, and a multichannel analyzer for the detection and measurement of prompt ${\gamma}$-ray emit form the neutron capture elements. Introducing a ${\gamma}$-${\gamma}$ coincidence system also improves the quality of the ${\gamma}$-ray spectrum by suppressing the background created from the Compton scattering of high energy prompt ${\gamma}$-rays. A PGAA system using a $^{252}Cf$ neutron source is currently under construction for the on-line measurement of several elements in aqueous samples at KAERI. The system can be applied for the detection of chemical weapons and explosives as well as various narcotics.
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통합기술수용이론을 이용한 의료기기 제품군에 따른 수용의도와 이용에 관한 연구
송병철(SONG, Byung Chul),김완민(KIM, Wan Min) 동북아시아문화학회 2017 동북아시아문화학회 국제학술대회 발표자료집 Vol.2017 No.7
최근 사회 전반적으로 4차 산업혁명이 주요 이슈화 되면서 사물인터넷, 인공지능, 모바일, 생명공학, 나노기술, 빅데이터 등 각 분야의 기술이 융합 발전하면서 새로운 패러다임의 비즈니스 환경으로 큰 변화가 일어나고 있다. 의료기기 산업 분야 역시도 인구의 고령화 문제와 신종 바이러스 출현과 함께 다양한 질병에 대한 두려움 가운데서도 개인의 건강한 삶을 예측, 예방하기 위한 양질의 헬스케어 서비스를 제공하고자 급속하게 변화하고 있다. 의료기기 시장은 기술 발전에 따른 신규 경쟁 업체의 시장진입 문턱이 낮아지면서 가격 경쟁이 심해지고 있으며, 정보 취득이 빠른 고객의 눈높이가 높아지면서 제품의 차별성을 부각하는 것이 점점 힘들어지고 있다. 본 연구에서는 기술통합수용이론(UTAUT)에 대한 선행연구를 기반으로 국내 의료기기 시장의 제품트랜드를 가장 잘 보여 주고 있는 체외진단 의료기기 중에서 호흡기 감염질환의 인플루엔자 제품군을 선정하여 의료기관 및 병원 종사자들의 성과기대, 노력에 대한 기대, 촉진조건, 인지된 위험, 사회적 영향과 조절변수로 의료기기 제품군의 형태에 따른 수용의도와 이용을 설명하고자 한다. 동일한 제품군 형태는 첫째, 신속진단키트(RDT, Rapid Diagnostics Test) 둘째, 리더기 + 멀티스트립(multi - strip reader for point of care testing) 셋째, POC 분자진단(Molecular Point of Care Diagnostics) 제품 3가지 군으로 나뉘어서 분석하여 통계적으로 유의한 영향을 주는지 확인하고자 한다. As the fourth industrial industry has received much attention from the world, internet of things, artificial intelligence, mobile, bio technology, nano technology and big data are converged and developed, which has caused a great change in business and paradigm shift. Medical instrument industry is also changing rapidly to provide good quality of health care service to improve health and prevent diseases as Korea is rapidly becoming an aging society and new types of virus appear. Price competition among medical instrument enterprises is becoming more fierce as start-up firms enter medical instrument market. It becomes more difficult for medical instrument enterprises to promote a distinctiveness in products as customers’ expectation level has risen. This study aims to describe an acceptance intention. a use, performance expectation by medical institutions and staff, expectation for effort, condition for expedite promotion, perceived risk and social influence according to forms of medical instrument product line as a moderator variable after selecting influenza product line of respiratory disease out of medical institutions for in-vitro diagnosis showing product trend of products in domestic medical instrument market best based on advance research on unified theory of acceptance and use of technology(UTAUT). This study is to verify whether they have a statistically significant influence by classifying product line into rapid diagnostics test(RDT), multi - strip reader for point of care testing and molecular point of care diagnostics and analyzing them.
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한ㆍ중 의료기기산업의 동향과 국내 의료기기 산업의 중국진출 문제점 및 해결방안에 관한 연구
송병철(Song, Byung Chul),김완민(Wan-Min Kim) 동북아시아문화학회 2016 동북아시아문화학회 국제학술대회 발표자료집 Vol.2016 No.10
Even though Korea is in surplus in the Korea-China trade balance of medical device industry, the current condition is not optimistic because of Chinese policies to expand domestic demand, non-tariff barriers, and political variables. This study aims to understand main problems of Korean government and companies" entry strategy into China market, and then to suggest the analysis and solution methods. First, it aims to examine the structure of the market and current status of Korea-China medical device industry. Second, it aims to analyze the trend and problems of Korea-China medical device industry. Third, it pursue to seek for solution measures of Korean medical device industry"s entry strategy into China market. Our domestic medical device companies should work hard to establish measures to effectively dominate Chinese market, by using the governmental long-term policies, overcoming medical device regulations and non-tariff barriers through the localization strategies in China market, and also producing/distributing competitive products with stability and effectiveness in the world market through the intensive investment in competitive product groups.
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송병철 ( Byung-Chul Song ),김민경 ( Min-kyung Kim ),오창석 ( Chang-Seok Oh ),신수진 ( Soo-jin Shin ),한진아 ( Jin-A Han ),김수정 ( Soo-jeong Kim ) 대한통합의학회 2022 대한통합의학회지 Vol.10 No.1
Purpose : The purpose of this study is to determine the effect of the overseas volunteer activities of university students on changes in global citizenship. Methods : This study was conducted as a one-group pre-posttest design. The study’s subjects were students who participated in the 37th World Friends Korea Youth Volunteer Corps in 2018. Among them, 158 students who completed the survey were included in the analysis. The tool for measuring global citizenship was comprised of knowledge, skill, attitude, and willingness to practice. The data were analyzed using the SPSS 26.0 program, and the statistical significance was set to p<.05. Results : Among the study’s participants, there were 123 females (77.85 %). By grade, there were the most juniors, with 68 (43.04 %). There were 53 (33.55 %) seniors, 28 (18.35 %) sophomores, and eight freshmen (5.06 %). Among all participants, 52.53 % had experience in global citizenship education, and 63.92 % had experience in activities related to global citizenship. Because of analyzing the changes in global citizenship before and after overseas volunteer activities, “skill” increased the most, from 3.51±.65 points to 4.34±.56 points (p< .001). Due to analyzing changes in global citizenship before and after overseas volunteerism, the knowledge and attitude of freshmen were statistically significantly positive, with 1.17± 1.23 (p=.011) and 1.41±1.22 (p=.008), respectively. Participants with global citizenship experience had a significant change in attitude (p=.018). Conclusion : It was confirmed that the overseas volunteer activities of undergraduate students in the university brought a positive change to global citizenship. Providing opportunities for global citizenship education and activities in elementary, middle, and high schools in the future will maximize the effects of overseas volunteer activities to improve global citizenship.
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<sup>252</sup>Cf 선원을 이용한 즉발감마선 계측시스템 구성
박용준,송병철,지광용,Park, Yong-Joon,Song, Byung-Chul,Jee, Kwang-Yong 한국분석과학회 2003 분석과학 Vol.16 No.1
$^{252}Cf$ 중성자 선원을 이용한 즉발감마선 계측 시스템 (NIPS, Neutron Induced Promp ${\gamma}$-ray Spectroscopy)을 설계 및 구성하기 위하여, 시스템내의 감속제 및 차폐체등의 효과를 시험하고 감마선 바탕값과 Cl을 포함한 시료의 즉발 감마선을 계측하였다. 이를 위한 예비시험으로 한국원자력연구소 내에 있는 TLD 판독용 $^{252}Cf$ 선원을 이용하였으며 즉발감마선은 시스템 내부의 동축형 HPGe (GMX, 60% relative efficiency)과 시스템외부 (약 20m 거리)의 Notebook PC 중성자와 감마선의 바탕값을 측정하고, 바탕값을 최소로 할 수 있는 차폐체의 기하학적 구조를 고안하였다. 감마선 바탕값을 최소화하기 위하여 두 개의 HPGe 검출기를 이용한 감마-감마 동시계측법을 이용하였다. 이 실험 자료를 이용하여 최적의 NIPS 시스템을 구성하였다. For the design and set-up of neutron induced prompt ${\gamma}$-ray spectroscopy system using $^{252}Cf$ neutron source, the effects of shielding and moderator materials have been examined. The $^{252}Cf$ source being used for TLD badge calibration in Korea Atomic Energy Research Institute was utilized for this preliminary experiment. The ${\gamma}$-ray background and prompt ${\gamma}$-ray spectrum of the sample containing Cl were measured using HPGe (GMX 60% relative efficiency) located at the inside of the system connected to notebook PC at the outside of the system (about 20 meter distance). The background activities of neutron and ${\gamma}$-rays were measured with neutron survey meter as well as ${\gamma}$-ray survey meters, respectively and the system was designed to minimize the activities. Prompt ${\gamma}$-ray spectrum was measured using ${\gamma}$-${\gamma}$ coincident system for reduce the background and the continuum spectrum. The optimum system was designed and set up using the experimental data obtained.
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표형열,박양순,박순달,박경균,송병철,박용준,지광용,Pyo, Hyung-Yeal,Park, Yang-Soon,Park, Sun-Dal,Park, Kyoung-Kyun,Song, Byung-Chul,Park, Yong-Joon,Jee, Kwang-Yong 한국방사성폐기물학회 2006 방사성폐기물학회지 Vol.4 No.1
Ion exchange resin particles should not be found in steam generator(S/G) sludge. The suspicious spherical resin particles observed in S/G sludge sample were characterized for particle size distribution under optical microscope using the micro-technique, for element analysis by the electron probe micro analysis (EPMA), and for molecular identification by the IR spectroscopy. The particle sizes are distributed from 1 to $200{\mu}m$ for the sludge, while 40 to $500{\mu}m$ for the spherical resin particles. The results of the elemental analysis showed different major impurities: Si, Al, Mn, Cr, Ni, Zn and Ti for the sludge particles, while Si, Cu, Zn for the spherical resin particles. However, both particles contain Fe as a matrix of magnetite $(Fe_3O_4)$. IR spectrum of the spherical particles was not quite similar to the IR spectrum of ion exchange resins used in S/G system. These results indicate that the spherical particles are not related to ion exchange resin particles and may be formed by the process of the sludge formation.
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공현철(Gong Hyeon Cheol),송병철(Song Byung Chul),오범석(Oh Bum Seok) 한국항공우주연구원 2008 항공우주산업기술동향 Vol.6 No.2
한국항공우주연구원이 개발하고 있는 통신해양기상위성은 2009년 6월경에 발사될 예정이다. 지구 자전 속도와 같은 속도로 돌기 때문에 24시간 기상 및 해양관측과 통신서비스가 가능한 국내에서 개발되는 최초의 정지궤도위성이다. 2008년 11월에 프랑스에서 해양탑재체가 들어옴으로써 세 가지 탑재체를 장착할 수 있게 되였고 그 후에는 우주환경시험 등을 거쳐서 프랑스령 기아나 우주센터에서 발사될 전망이다. 본 논문에서는 통신해양기상위성이 세계적으로도 첫 번째 정지궤도 복합위성이 되기 때문에 국내 및 세계적으로 정지궤도 복합위성과 관련된 개발 동향을 살펴보고자 한다. Korea Aerospace Research Institute(KARI) is developing COMS (Communication, Ocean and Meteorological Satellite) which is scheduled to take off in June, 2009. COMS is the first geosynchronous satellite developed in Korea which is able to perform three missions 24 hours a day. The oceanic payload was transferred from France to Korea in November, 2008 and made it possible to integrate all three payload together. After the integration COMS is planned to be transferred to Guiana Space Center (on French territory) to be launched, In this paper the trend of domestic and international development of the multi-purpose geosynchronous satellite considering the COMS is the first operational geosynchronous multi-purpose satellite in the world.
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