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실내 난방시 온열쾌적성 평가에 관한 연구(part 1: 실내 난방시 실온변화에 따른 감성이미지 평가)
한남규 ( Nam Kyu Han ),금종수 ( Jong Soo Kum ),김형철 ( Hyung Chol Kim ),김동규 ( Dong Kyu Kim ),김창연 ( Chang Yon Kim ) 한국감성과학회 2003 춘계학술대회 Vol.2003 No.-
In recently, Is inhabiting more than 70% indoors during a day in case of company employee and ordinary people which is looking at usual business. Therefore Thermal comfort of human body about indoor temperature and air flow acting very heftily. When intestine temperature is fallen for external low temperature and air flow in winter in case enter into heated room feel comfort by effect of temperature and feel comfort or discomfort by room heating condition gradually. Therefore it is important that grasp thermal comfort about temperature and air flow in heating to keep continuous comfort in indoor dwelling. Temperature and thermal comfort factor of emotion & sensitivity image exert fair effect since heating middle although thermal comfort change greatly effect on sensation about temperature at actuality heating early. Need much study yet in vantage point of emotion & sensitivity although much study were held about thermal and comfort sensibility and when heat in existing research until now. Therefore this study is targeting that evaluate thermal comfort through introduction of estimation method by emotion & sensibility image real and synthetic sensibility about thermal environment that is becoming winter heating.
신영규(Young Kyu Shin),한남규(Nam Gyu Han),탁태오(Tae Oh Tak) 대한기계학회 2013 大韓機械學會論文集A Vol.37 No.3
본 논문은 복잡한 제어장치 없이 비교적 간단한 마찰식 메카니즘을 이용하여 약물 주입량을 정확하게 제어할 수 있는 공압식 약물주입기 구동장치의 해석과 설계를 다룬다. 다물체 해석 기법을 적용하여 약물주입기의 모델을 구성하였고, 이에 대한 동역학 해석을 통해서 구동 메카니즘의 형상, 스프링강성, 마찰특성 등과 관련된 여러 가지 설계인자들이 약물주입성능에 미치는 영향을 분석하여 이를 시제품 설계에 반영하였다. 약물주입기가 100만회 사용에 대한 내구성을 평가하기 위한 내구시험을 실시하였고, 100만회 구동 후 약물주입기의 변위와 초기상태의 변위를 비교하여 제안한 메카니즘이 충분한 내구성을 가지고 있음을 확인하였다. This research deals with the analysis and design of a driving mechanism for an automatic pneumatic drug injector, which can precisely control the injection volume using a relatively simple friction-driven mechanism, without any complicated control system. Through a dynamic analysis, the effects of the design parameters of the driving mechanism associated with the geometry, spring stiffness, and fiction are analyzed, and the results are reflected in a proto-type drug injector design, which is under development for mass production. A test is performed to assess the durability of the mechanism for up to one million operations, and comparison of its displacement after one million operations, verifies the mechanism’s durability.
탁태오(Tak, Tae-Oh),한남규(Han, Nam-Gyu),신영규(Shin, Young-Kyu) 강원대학교 산업기술연구소 2012 産業技術硏究 Vol.32 No.1
Carboxy-guns are used for rapid and precise injection of CO2 gas to the target skin area using external power source. In the design of carboxy-gun, the most important thing is how to precisely control injection volume of CO2 gas. This paper deals with the control scheme of injection volume of carboxy-gun using solenoid valve. First the amount of volume that passes through the solenoid valve under on-off time ratio control is estimated based on the assumption of compressible gas flow. The flow rate of gas is experimentally measured under the varying pressure of the gas reservoir. Two results showed good correlation to each other, thus demonstrating the validity of the volume control strategy.
HaCaT 세포주에서 캐모마일 (Matricaria chamomilla) 추출물의 항병원성 및 항염 효과에 관한 연구
임은경(Eun Gyeong Lim),김근태(Guen Tae Kim),김보민(Bo Min Kim),김은지(Eun Ji Kim),김상용(Sang-Yong Kim),한남규(Nam Kyu Han),하재순(Jae Sun Ha),김영민(Young Min Kim) 한국생물공학회 2017 KSBB Journal Vol.32 No.1
Chamomile (Matricaria chamomilla), a member of the Asteraceae family, is a well-known for medicinal plant and can be found in India and Europe. Chamomile is an effective sedative and various medical effects. But, the effects of acne treatment by chamomile were not investigated. Therefore, we assessed the anti-oxidant effects, anti-microbial activity and anti-inflammatory effects by chamomile extracts in HaCaT keratinocyte cells. Anti-oxidant effects of chamomile extracts were investigated by DPPH assay. Also, results of MTT assay was demonstrated that chamomile extracts did not have a cytotoxic effect in HaCaT cells. To assess the antimicrobial activity, we determined formation of inhibition zone of Propionibacterium acnes by extracts from chamomile. Tumor necrosis factor-α (TNF-α) induces production of inflammatory cytokines such as interleukin-1β (IL-1β), IL-6 and IL-8 and expression of COX-2. Chamomile extracts could inhibit TNF-α-induced mRNA expression levels of IL-1β, IL-6, IL-8 and COX-2 gene. These results demonstrated the possibility of chamomile for prevention and treatment of skin inflammatory diseases such as acne.