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정현수(Hyeon Soo Jeong),김동성(Dong Sung Kim) 대한기계학회 2011 대한기계학회 춘추학술대회 Vol.2011 No.10
The roll type system has been used for continuous printing and texturing on the surface of the various kinds of products in one step, different with other texturing methods like hot embossing or hot press. The roll-to-flat is one of these roll type systems, and a thermoplastic sheet is textured out inside of cylindrical mold and moving plate in this system. The developed roll-to-flat system in this research can control 4 main processing parameters, temperature of the roll mold, temperature of the moving plate, pressure of pneumatic cylinder, and velocity of the moving plate or processing speed. With this roll-to-flat method, thermoplastic based micro-fluidic chips are fabricated. The textured plate of serpentine micro mixer with the channel depth of 200 um and the channel width of 300 um were made of polystyrene (PS), polymethylmetacrylate (PMMA), and polycarbonate (PC) with this method. Finally, the plates are thermally bonded, and its reliability was tested.
Comparison of the Activities of Lythrum salicaria L. Leaf Extracts According to Harvesting Time
Hyeon Soo Jeong(정현수),Chun Geon Park(박춘근),Kyung Hae Soe(서경혜),Hyung Don Kim(김형돈),Young Sup Lee(이영섭),Dae Young Lee(이대영),Jae Won Lee(이재원),Geum Soog Kim(김금숙),Seung Eun Lee(이승은) 한국약용작물학회 2018 한국약용작물학회 학술대회논문집 Vol.2018 No.1
범죄 이력 여부에 따른 알코올 사용 장애 환자의 음주 특성, 정서적 특성 및 특성간 상관관계의 비교
정현수(Hyeon Soo Jeong),변원탄(Won Tan Byun),박영민(Young Min Park),김세훈(Se Hoon Kim),박현우(Hyun-Woo Park),정재웅(Jae Woong Jeong),김휘곤(Whi Gon Kim),주새한(Sae Han Joo) 대한생물치료정신의학회 2021 생물치료정신의학 Vol.27 No.3
Objectives:In this study, socio-demographic, drinking and emotional characteristics, and their correlations were compared among patients with alcohol use disorder (AUD) according to the presence or absence of any type of criminal record. Methods:Among patients admitted to the hospital with AUD, 27 with and 31 without criminal records were included. Socio-demographic data and drinking characteristics such as first drinking age, average daily alcohol consumption were collected. In addition, the severity of alcohol problems, the degree of change readiness for drinking alcohol, depressive symptoms, anxiety symptoms, and impulsivity were evaluated using scales and statistically analyzed. Pearson’s correlation test was applied to reveal the differences in correlation of the characteristics according to the presence or absence of criminal records. Results:The first drinking age was significantly earlier in the AUD group with criminal records. Interestingly, the degree of change readiness regarding alcohol problem as shown in SOCRATES-K was significantly higher in the AUD group with criminal records. Anxiety symptoms were statistically significantly higher in the AUD group with criminal records. In AUD with criminal records, first drinking age negatively correlated with the degree of change readiness. In AUD without criminal records, first drinking age correlated negatively with the severity of alcohol problem, and the degree of change readiness, and the degree of change readiness negatively with age, and the degree of change readiness positively with the severity of alcohol problem. In Both groups, anxiety symptoms positively correlated with depressive symptoms. Conclusions:This study showed that AUD patients with criminal record had a faster first drinking age and the higher degree of change readiness regarding alcohol problem. Significantly higher symptoms of anxiety were also presented in AUD patients with criminal record than AUD patients who have no criminal records. Some differences were identified in correlations among characteristics between the two groups.