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항균기능정보가 각인된 플라스틱 저장용기의 항균 특성에 관한 연구
방건웅,김강녕,김희정,Bahng, Gun-Woong,Kim, Kang-Nyung,Kim, Hee-Jung 한국포장학회 1999 한국포장학회지 Vol.5 No.2
본 연구에서는 새로운 개념의 항균처리 기술을 도입하여 항균 물질을 플라스틱 용기에 혼입하지 않고도 항균기능이 발휘되도록 하는 기술을 개발하고자 하였다. 기술의 요체는 항균기능정보를 물에 각인한 다음에 이를 플라스틱 제조용 원료 수지에 전사하여 최종 제품에서도 같은 기능이 나타나도록 한 것이다. 이러한 개념에 입각한 기능 정보 각인 기술의 실용화 가능성을 검토하기 위하여 시제품을 만들어 항균 실험을 수행한 결과 세균 증식 억제율이 75% 전후의 수준인 것으로 나타났다. 앞으로 이러한 기술이 보다 더 다듬어지고 그 작용기전이 밝혀진다면 더욱 뛰어난 제품이 개발될 가능성이 높다고 하겠다. To enhance antibiotic function of plastic containers, many methods have been applied. Most of the methods utilize antibiotic properties of antibiotic substances such as silver containing chemicals. Sometimes antibiotic substances are used without long term stability test as food container additives. Basically, this kind of methods is not safe since it is based on the antibiotic properties of the material itself and hence direct contact between food and container additives is unavoidable to obtain antibiotic effect. In this paper, a new concept of information templation was applied to make food containers with antibiotic function. It has been known recently that water memorize informations and this information could be tempelated to other materials through appropriate methods. One of the participating company developed this method to template informations onto plastic materials. Food containers were produced using this plastic chips and experimental results showed that antibiotic functional information temptation method is effective for practical application. Results and discussions are reported in this paper.
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방건웅(Gun-Woong Bahng) 한국정신과학학회 2009 韓國精神科學學會誌 Vol.13 No.1
수소가 무공해의 에너지원으로 각광을 받음에 따라 수소경제라는 용어가 널리 쓰이고 있다. 수소가 연소되면 물이 나올 뿐이므로 청정 연료임에는 틀림이 없으나 핵심이 되는 수소의 생산에 대해서는 별 언급이 없다. 현재 대부분의 수소는 천연가스나 석유 정제과정에서 나오는 휘발성 가스를 고온에서 수증기와 반응을 시켜 열분해하는 방식으로 얻어진다. 고온의 온도를 확보하는 과정에서 이산화탄소가 필연적으로 생성되기 때문에 수소 생산 과정을 같이 고려한다면 전체적으로 수소 경제는 문제가 많다는 것이 드러난다. 따라서 환경 친화적인 에너지원이 개발되지 않고는 수소경제를 실현하는 것이 불가능하다. 본 논문에서는 지금껏 알려진 대체에너지원 외에 다른 신 에너지원이 없는지 살펴볼 것이다. Hydrogen is expected as a clean energy source for the future to be used in automobile, home heating, etc. It is certain that hydrogen itself do not produce any harmful pollusive materials, however, for the production of hydrogen we need natural gas or petroleum gas. These fossil fuel should be dissociated into hydrogen and carbon monooxide or carbon dioxide at high temperature. As a consequence, production of carbon dioxide is unavoidable and this makes hydrogen economy as a fraud. Without developing environment friendly new energy source, hydrogen economy could not be realized. In this papaer, new alternative energy sources are reviewed.
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방건웅(Bahng, Gun-Woong) 공주대학교 동양학연구소 1994 초자연현상연구 Vol.2 No.-
현대과학에서의 에너지 개념과 氣에너지 개념의 차이는 오로지 量적 성격으로 보는것과 量적ㆍ質的 성격이 합쳐진 것의 차이로 볼 수 있다. 서양에서 質的인 특성을 갖는 氣에너지에 대한 본격적인 연구는 메스머로부터 시작되었다고 볼 수 있으며 약 200여년이 된다. 메스머 이후 라이켄바흐, 그리고 라이히 등이 이 분야의 연구를 계속 이어왔고, 이 세 연구자들의 연구결과를 간략히 요약하였다. The difference in the concept of energy in modern science and Ki-energy can be thought as the difference in energy with quantitative property only and energy with quantitative and qualitative properties. The origin of the research on the Ki-energy with qualitative characters in western hemisphere begins with Franz Anton Mesmer. During the last 200 years since Mesmer, Reichenbach and Reich succeeded the research. In this paper, the results of these three persons’ researches on the Ki-energy are summarized.
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정세환(Sehwan Jeong),허훈(Hoon Huh),방건웅(Gun Woong Bahng),김창근(Chang Geun Kim),채균식(Kyun Shik Chae) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5
The crashworthiness of auto?body structures is one of the important issues in the automotive industry. The crash analysis with finite element methods has been conducted in order to evaluate the crashworthiness of auto?body structures. In the car crash, auto?body structures undergo deformation with a wide range of strain rate from 0.001/sec to 500/sec. Since the material properties of steel sheets depend on the rate of deformation, in order to ensure the impact characteristics of auto?body structures accurately, the dynamic behavior of sheet metals must be examined and applied to the finite element model appropriately. This research is concerned with standard uncertainty evaluation of tensile properties of auto-body steel sheets in wide range of strain rate from 0.001/sec to 100/sec. Stress-strain relations of an auto-body steel sheet were obtained with quasistatic and high speed tensile tests. Uncertainty components in both testing methods are summarized and standard uncertainties of each input quantities are evaluated. An analytic model is established in order to calculate combined standard uncertainty of the measurand. The measurand is true stress with respect to true strain and the input quantities are load and displacement data during the tensile test and initial dimensions of specimen such as thickness, width and length. Uncertainties which come from signal processing and deviation of measured values in repetitive tests are also considered.
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브라운 가스와 수증기 혼합연료의 화염특성에 관한 수치 해석적 연구
장동순 ( Dong Soon Jang ),신미수 ( Mi Soo Shin ),방건웅 ( Gun Woong Bahng ) 한국폐기물자원순환학회 2013 한국폐기물자원순환학회지 Vol.30 No.6
The stoichiometric gas from an advanced alkaline electrolysis process as developed by Yull Brown is called as HHO gas or Brown gas. By this process, two moles of H2 and 1mole of O2 gases are generated stoichiometrically in a wellpremixed state. Due to the fact that very clean fuel can be obtained relatively easily by the simple equipment of electrolysis, the research of this gas has been continuously performed, even though the criticism has been made by many researcher of this area. The main controversial argument is in that the use of high quality electrical energy is used again for the generation of another combustible fuel with less than 100% efficiency in its energy transform. In fact, since Brown gas exists in the state of a completely mixed state only with oxygen molecule, there is no time delay due to turbulent mixing occurring in practical combustion process. Therefore, the high reaction rate is likely to have a high chance of backfire. Further, since there is no inert material like nitrogen as in air, the flame temperature rises unnecessarily high. In order to prevent the backfire phenomenon, the increase of injection velocity of fuel nozzle causes the formation of very unstable long flame with good chance of flame lift-off. One of practical application methods, the co-combustion of Brown gas with other fuel like gasoline and LNG, etc has been reported in open literature in order not only to increase the combustion efficiency but also for the reduction of pollutant emission such as NOx. In order to control the negative aspect of flame characteristics of Brown gas, in this study, an novel method is employed by premixing Brown gas with water vapor and the co-combustion performance and characteristics has been studied numerically for a combustor operated for kiln drying method. To this end, a commercial code(STAR-CCM+7.06) has been employed with the program verification against operational data of kiln drying combustor and a parametric numerical calculation has been made with the change of the amount of water vapor in the fuel mixture of Brown gas and water vapor. The calculation results show that the combustion feature looks quite stable without showing any unstable flame feature like long thin flame and backfire. Further temperature and streamline contours with the amount of water vapor content look consistent and physically acceptable. This result suggests that the addition of water vapor in the Brown gas looks one of promising method for the use of Brown gas as clean fuel.
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김창근(Chang Geun Kim),박주근(Jookeun Park),채균식(Kyun Shik Chae),방건웅(Gun Woong Bahng) 대한인간공학회 2009 대한인간공학회 학술대회논문집 Vol.2009 No.5
참조표준은 측정표준 및 성문표준과 함께 국가표준기본법에 명시되어 있을 정도로 중요한 표준분야이다. 참조표준은 엄밀한 평가 과정을 거쳐 그 신뢰성이 보장된 수치 데이터를 의미한다. 데이터의 신뢰성을 보장하기 위해서는 데이터의 평가기준 수립, 평가기준에 의거한 데이터 평가 과정을 거쳐야 한다. 이러한 체계를 갖추기 위하여 국가참조표준센터가 2006년에 설립되었으며 2009년 현재 12개의 데이터센터가 지정되어 각 담당 분야별로 참조표준을 확립하기 위한 작업을 수행하고 있다. 본 논문에서는 참조표준의 개념과 참조표준체계, 그리고 활용에 대해 간략하게 기술하였다.
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