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장인수 ( Insoo Jang ),양창섭 ( Changsop Yang ),선승호 ( Seungho Sun ),정민정 ( Minjeong Jeong ),한창호 ( Changho Han ),황의형 ( Eui-hyoung Hwang ),서형식 ( Hyungsik Seo ) 경락경혈학회 2019 Korean Journal of Acupuncture Vol.36 No.1
Objectives : Carbon dioxide (CO<sub>2</sub>) laser, a high power laser has been used for pain management, dermatology, and surgery and laser acupuncture and moxibustion as well, since it had been oscillated in 1964 at Bell Telephone Laboratories in the US. The purpose of this study is to investigate the history of CO<sub>2</sub> laser acupuncture through reviewing studies published in early stage of laser medicine. Methods : To investigate the early history of CO<sub>2</sub> laser acupuncture, studies were searched in the electronic databases, including PubMed, ScienceDirect, CNKI, Wanfang, J-STAGE, CiNii, KTNP, and OASIS, since 1964. Articles in English, Chinese, Japanese and Korean were included, and there were no limitations in literature types such as reviews, essays, clinical trials, animal experiments and veterinary research. Results : We found that the first CO<sub>2</sub> laser application to acupoints was done by a research team in Shanghai in 1976. They used CO<sub>2</sub> laser for acupuncture treatment and it was also the first laser acupuncture treatment in China. Since the first case report of CO<sub>2</sub> laser for leukopenia, it has been applied to various diseases in China, Korea, Japan and other western countries. It has been widely applied in the fields of dentistry and veterinary medicine, as well as clinical applications. Conclusions : Not only CO<sub>2</sub> laser can be used as laser acupuncture by stimulating the acupoints and meridians, but also can produce moxibustion effect by using heat stimulus. Therefore, it is expected that it will be used in various clinical fields in the future.
Choi, Insoo,Jung, Yoo Eil,Yoo, Sung Jong,Kim, Jin Young,Kim, Hyoung-Juhn,Lee, Chang Yeon,Jang, Jong Hyun The Korean Electrochemical Society 2017 Journal of electrochemical science and technology Vol.8 No.1
Electrochemical conversion of $CO_2$ and production of $H_2$ were attempted on a three-dimensionally ordered, porous metal organic framework (MOF-74) in which transition metals (Co, Ni, and Zn) were impregnated. A lab-scale proton exchange membrane-based electrolyzer was fabricated and used for the reduction of $CO_2$. Real-time gas chromatography enabled the instantaneous measurement of the amount of carbon monoxide and hydrogen produced. Comprehensive calculations, based on electrochemical measurements and gaseous product analysis, presented a time-dependent selectivity of the produced gases. M-MOF-74 samples with different central metals were successfully obtained because of the simple synthetic process. It was revealed that Co- and Ni-MOF-74 selectively produce hydrogen gas, while Zn-MOF-74 successfully generates a mixture of carbon monoxide and hydrogen. The results indicated that M-MOF-74 can be used as an electrocatalyst to selectively convert $CO_2$ into useful chemicals.
Choi, Insoo,Kim, Hak-Yoon,Ahn, Sang Hyun,Hwang, Seung Jun,Yoo, Sung Jong,Kim, Ho Young,Choi, Jihui,Park, Hyan Joo,Jang, Jong Hyun,Kim, Soo-Kil American Scientific Publishers 2016 Journal of Nanoscience and Nanotechnology Vol.16 No.10
<P>Electrochemical conversion of carbon dioxide to formic acid was attempted on Sn-Zn alloy catalysts. The alloy catalysts were fabricated by electrodeposition, and their compositions were controlled by varying the concentration of the precursor solution. A home made proton exchange membrane-based electrochemical cell was used for the reduction of carbon dioxide. The concentration of formic acid produced and the conversion efficiency were determined via electrolysis and high performance liquid chromatography analysis. The effect of the alloy composition on the amount of formic acid generated and the conversion efficiency was evaluated, and alloy composition was found to have a strong influence on these variables. It was thus concluded that the conversion of carbon dioxide to formic acid can be enhanced by alloying Zn with Sn.</P>
대면적 나노임프린트 리소그래피에 사용되는 기점마크를 이용한 정렬과정의 오차원인 분석
박인수(Insoo Park),박영걸(Yonggul Park),이민규(Minkyu Lee),신동훈(Donghoon Shin),이기성(Keesung Lee),장시열(Siyoul Jang),임홍재(Hongjae Yim),정재일(Jayil Jeong) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.11
Several error sources are analyzed when aligning flexible glasses into the target position used in nano-imprint lithography. When aligning a mold and a target glass, two fiducial marks on each are typically used with machine vision camera in order to eliminate relative positional error. However, the flexibility of the glass and mold can cause error in relative position between two fiducial marks. We investigate these error sources in this work: difference of refraction rates between mold, resin, and the target glass; angular inclination of glasses; shape distortion of the marks due to glass deformation from the gravity. Finally, the design values are suggested as a guidance for designing fiducial marks.