P-93 : The fiber stainless steel recycle from grinding swarf by using binary supercritical fluid mixture (carbon dioxide + propane)

양준열,이창하,이윤우,유기풍,임종성 한국화학공학회 2007 화학공학의이론과응용 Vol.10 No.2

Supercritical fluids extraction has gained widely acceptance as the method for removal. It has many advantages of low waste production, rapid extraction, enhanced extraction efficiency for waste removal. There are four processes in steel manufacturing process. They are iron making, steel making, continous casting, and rolling process. Particularly, because grinding swarf produced from the rolling process has cutting oil over 10% of total weight, it is classified as a specified waste. If successful procedure can be implemented to separate and recycle the steel and cutting oil from raw swarf, it will be turned into highgrade steel that can be applied to various fields of metal material. In this work, we used binary supercritical fluid mixture(carbon dioxide + propane) as a solvent in order to remove cutting oil from raw swarf. This experiments were performed in the temperature ranges from 30 to 50℃ and pressure ranges from 10 to 30MPa. The weight of propane in supercritical is 5%,10% and 20%, respectively. In addition, the characteristics of swarf particles treated with supercritical fluid were compared with those treated with vacuum thermal extraction.

Expression Profiling of Streptomyces peucetius Metabolic Genes Using DNA Microarray Analysis

양준열,송은정,김병기,김응수,송재경,오민규 한국생물공학회 2008 Biotechnology and Bioprocess Engineering Vol.13 No.6

Doxorubicin (DXR) and daunorubicin (DNR) are anthracycline antibiotics produced by Streptomyces peucetius and widely used as cancer chemotherapeutic agents. To improve their productivity, regulation of DXR/DNR synthesis genes as well as central metabolic pathway genes must be understood more clearly. So far, studies have focused on DXR/DNR gene regulation. To investigate the correlation between the central metabolic pathway genes and DXR/DNR productivity, we selected 265 genes involved in glycolysis, fermentation, the citric acid cycle, butanoate metabolism, etc., and searched for their sequences in the S. peucetius genome by comparing gene sequences to those of Streptomyces coelicolor. The homologous genes were amplified by PCR and arrayed on glass microarray slides. Gene expression was monitored under two different growth media conditions, R2YE and NDYE. Genes involved in the production of malonyl-CoA and propionyl-CoA, the main precursors for doxorubicin synthesis, were mainly upregulated in NDYE media. Genes related to acetyl-CoA and the urea cycle were also upregulated. These changes in gene expression were confirmed by real-time RT-PCR.

The stainless steel fiber recycle from grinding swarf by using supercritical fluids

양준열,김용호,이창하,이윤우,임종성 한국화학공학회 2007 화학공학의이론과응용 Vol.10 No.1

Supercritical fluids extraction has gained widely acceptance as the method for removal. It has many advantages of low waste production, rapid extraction, and enhanced extraction efficiency for wasteremoval. The recovery of stainless steel fiber by removing cutting oil from grinding swarf, which is classified as specified wastes, was investigated. The experiments for removing cutting oil from swarf were performed with supercritical CO2 at 30-50°C and 10-30MPa, as well as sub- and supercritical propane at 80-110°C and 5-20MPa. In addition, the characteristics of stainless steel fiber from swarf treated with sub- and supercritical fluids were compared with those treated vacuum thermal extraction. The extraction efficiency of cutting oil using supercritical propane was several times higher than that of supercritical CO2. By using supercritical fluids as a solvent, we could not only remove cutting oil from raw swarf effectively, but also preserve the stainless steel fiber``s own characteristics.

Feasibility of pharyngeal high-resolution manometry in patients with oropharyngeal dysphagia

양준열,정용욱,유혜수,김동현,김현수,박선영 대한내과학회 2023 대한내과학회 추계학술대회 Vol.2023 No.2

소형 애완견에서 발정주기별 질세포 출현율의 비교

양준열,손창호 한국수정란이식학회 2016 한국동물생명공학회지 Vol.31 No.3

The aim of this study was to compare the appearance rate of vaginal cytology during estrous cycle in small pet bitches. A characteristic features of vaginal cytology during the estrous cycle were the high proportion of superficial cell in proestrus, anuclear cell in estrus, small intermediate cell in diestrus, and small intermediate cell in anestrus, respectively. There were no statistically significant differences of appearance rate of vaginal cytology among small pet bitches in the each phase of estrous cycle. These results indicated that the vaginal cytology was useful method for estimating estrous cycle and optimal breeding time in small pet bitches.

The fiber stainless steel recycle from grinding swarf by using binary supercritical fluid mixture(carbon dioxid + propane)

양준열,이창하,이윤우,유기풍,임종성 한국공업화학회 2004 한국공업화학회 연구논문 초록집 Vol.2004 No.1

초임계 이산화탄소를 이용한 스와프로부터 연마유 탈착 특성

양준열(Jun Youl Yang),이윤우(Youn-Woo Lee),임종성(Jong Sung Lim) 한국청정기술학회 2004 청정기술 Vol.10 No.3

BWIM 시스템을 이용한 도로교의 피로하중 모형에 관한 연구

양준열,심낙훈,박영석 明知大學校 産業技術硏究所 1999 産業技術硏究所論文集 Vol.18 No.-

Collection of actual truck data under normal traffic is important for the development of a fatigue load model to accurately determine the distribution of load effects, axle loads, and axle spacing. WIM statistics are presented for the bridge, named "Eunhyum Bridge" and "Dongchun Bridge" on the national road. A load model in the form of the fatigue load model has been developed based on the analysis of gross vehicle weight. The axle spacing of the fatigue truck was determined by analysis of equivalent moment.

인터넷 홈페이지 제작사의 제작환경요인과 기업특성이 구매의사결정에 미치는 영향

양준열 ( Yang Joon-yeol ),이선규 ( Yi Seon-gyu ) 한국디자인트렌드학회 2008 한국디자인포럼 Vol.21 No.-

본 연구는 기업들이 홈페이지를 통해 효과적인 광고와 마케팅활동을 하기 위해서는 고객기업특성에 맞는 홈페이지를 만들어야하고 그 과정에서 홈페이지 제작업체는 어떠한 요인에 의해서 선정되는지를 알아보는 것이 본 연구의 목적이다. 이를 위해 먼저 홈페이지 제작환경요인들과 홈페이지 구매의사결정과정과의 인과관계를 살펴보고, 구매의사결정과정에 관련된 최고경영자의 성향과 기업이미지의 매개변수의 역할을 실증적으로 검증해 보고자 하였다. 연구결과 홈페이지 디자인 질과 가격 및 성과물이 구매의사결정에 유의미한 영향을 주는 것으로 나타났으며, 특히 디자인 질이 구매의사결정에 더 큰 영향을 미치고 있음을 알 수 있었다. 기업특성의 경우 최고경영자 성향, 기업이미지 모두 구매의사결정에 유의미한 영향을 주는 것으로 나타났으며, 특히 최고경영자 성향이 더 큰 영향을 미치고 있음을 알 수 있었다. 제작환경요인과 구매의사결정과의 관계에서 기업특성의 매개효과를 살펴보면 기업이미지만이 유의한 관계를 갖는 것으로 나타났다. 기술력 및 업력은 구매의사결정에 직접적인 영향을 주지 못하지만 기업이미지를 통해서 구매의사결정에 영향을 미치며, 기업이미지는 제작환경요인과 구매의사결정과의 관계에서 완전매개효과를 갖는 것으로 나타났다. The companies shall create the homepage satisfying the customers` characteristics as well as their own characteristics for effective advertising and marketing activities through the homepage. Thus, this study aims to identify the factors influencing on the selection of homepage creators. To this end, this study examined the causal relationship between the environmental factors of homepage creation and decision making process of homepage creation. Next, it will empirically verify the roles of parameters of corporate image and propensity of CEO related to the purchase decision making process. According to the results of research, the design quality, price and outcome of homepage have the significant impact on the purchase decision making process. In particular, the design quality had more impact on the purchase decision making process. For the corporate characteristics, the propensity of CEO and corporate image demonstrated the significant impact on the purchase decision, and especially the propensity of CEO showed more impact. In case of the mediating effect of corporate characteristics in the relationship with the environmental factors of production and purchase decision, only the corporate image indicated the significant relationship. While the technology and corporate capability couldn`t have direct impact on the purchase decision, the corporate image had impact on the purchase decision. The corporate image demonstrated the complete mediating effect in the relationship with the environmental factors of production and decision making.

제약회사 판촉에 대한 봉직의와 개원의의 선호분석

박상준,양준열,김은정 전북대학교 산업경제연구소 2010 아태경상저널 Vol.2 No.3

Korean pharmaceutical sector has entered into ultimate competition after the signature of the free trade agreement(FTA) between U.S.A. and Korea. Due to the Korean government's policy for separation of treatment and pharmacy, in addition, only doctors have the right to prescribe drugs. Before the policy physicians and pharmacists shared the right to prescribe drugs in Korea. Therefore, pharmaceutical companies have focused on physicians to enhance their market shares or profits. This paper classifies physicians into two types: self-employed and salaried physicians. Then it investigates whether or not usage and perceived credibility of information sources for medicines, and preferred promotion activities are different by the physician types. In the final section, it suggests several managerial implications for pharmaceutical companies. 의약분업과 의약품 분야의 한․미 FTA의 체결로 제약회사의 경쟁이 더욱 치열해지면서 제약회사의 주요 표적고객인 의사들을 대상으로 한 마케팅이 시급해졌다. 본 연구는 제약회사의 세분화 마케팅을 돕기 위해 기본적으로 의사들을 유형화(봉직의/개원의)하고, 이들 의사유형별 영향을 주는 정보원천의 활용도와 신뢰 도에 차이가 있는지, 처방기준에 차이가 있는지, 선호하는 판촉활동은 어떻게 다른지에 대해 분석하였는데, 그 결과는 다음과 같다. 첫째, 의사유형별로 활용 정도에 차이가 있는 정보원천으로, 봉직의는 제품광고, 학 술회의, 약품집, 판촉물, 교과서의 활용도가 높은 반면에 개원의는 영업사원이 제공하는 정보원천의 활용도 가 높은 것으로 나타났다. 둘째, 의사유형별로 신뢰 정도에 차이가 있는 정보원천은 제품광고, 학술회의, 약 품집, 의학전문잡지, 교과서, 인터넷홍보물로 나타났는데, 이들 모두 봉직의가 개원의보다 높은 신뢰도를 보 이고 있음을 알 수 있다. 셋째, 의사유형별로 차이가 있는 처방기준으로 의약품의 효과, 의약품의 안전성, 의약품의 부작용, 의약품의 순응도에 대해서는 봉직의보다 개원의가 처방기준의 활용정도가 높은 반면, 제 약회사 지명도와 임상학회지원 수준은 개원의 보다 봉직의가 처방기준으로 활용하는 정도가 높은 것으로 보여졌다. 넷째, 의사유형별로 선호에 차이가 있는 판촉활동으로는, 봉직의는 학술행사후원, 샘플제공, 임상 실험지원, 해외학회 참석 후원, 논문 및 임상 등 문헌 제공의 판촉활동에 대해 개원의보다 선호도가 높은 것으로 나타났으며, 개원의는 봉직의보다 환자들을 위한 프로그램 지원에 대한 판촉활동에 더 호의적인 것 으로 나타났다.