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신기웅,강용호,안재우,현승균,Shin, Gi-Wung,Kang, Yong-Ho,Ahn, Jae-Woo,Hyeon, Seung-Gyun 한국자원리싸이클링학회 2015 資源 리싸이클링 Vol.24 No.3
주석도금폐액으로부터 이온교환수지를 사용하여 주석 회수에 대한 연구를 실시하였다. 3종류의 이온교환수지를 사용하여 기초 실험한 결과 tertiary 기능기를 가진 이온교환수지(Lewatit TP 272)는 주석을 흡착하지 못하였고, iminodiacetic기능기를 가진 이온교환수지(Lewatit TP 207)는 주석의 흡착율은 높으나, 회수된 주석용액 내 불순물 함량이 높았다. Ethylhexyl-phosphate의 기능기를 가진 이온교환수지(Lewatit VP OC1026)를 사용한 경우, 주석의 흡착율이 iminodiacetic기능기를 가진 이온교환수지 보다 낮았으나 pH 조절에 따라 회수된 주석용액 내 불순물의 제거가 가능하였다. 또한 이온교환수지에 흡착된 유기물의 경우는 수세를 통해 제거를 함으로써 고순도 주석용액으로 회수가 가능하였다. In order to recover tin from the waste tin plating solution, we used the ion exchange method using three types of ion exchange resins. The ion exchange resin with tertiary functional group(Lewatit TP 272) has not adsorption ratio of tin. The ion exchange resin with iminodiacetic functional group(Lewatit TP 207) has high adsorption ratio of tin, but impurity content in the recovered tin solution was relatively high. Whereas, in case of the ion exchange resin with functional group of ethylhexyl-phosphate(Lewatit VP OC 1026), adsorption ratio of tin was less than that of Lewatit TP 207. However, it was possible to remove impurities in the recovered tin solution by controlling the pH of the solution. High purity tin solution can be recovered by removing the organic materials with water washing process.
$PdCl_2$ 첨가 폴리올공정(工程)을 이용(利用)한 판상 은(銀) 분말(粉末) 제조(製造) 및 특성(特性)
신기웅,안종관,김동진,조성욱,안재우,Shin, Gi-Wung,Ahn, Jong-Gwan,Kim, Dong-Jin,Cho, Sung-Wook,Ahn, Jea-Woo 한국자원리싸이클링학회 2010 資源 리싸이클링 Vol.19 No.5
[ $PdCl_2$ ] 함유된 폴리올공정을 이용하여 다양한 입도와 두께를 가진 판상 은 분말을 제조하였고 그 특성을 분석하였다. 판상 은 제조시 반응시간, $NH_4OH$, PVP 및 $PdCl_2$의 농도를 변화시킴으로서 각각의 조건 변화에 따른 영향을 조사하였다. 또한 제조된 판상 은 분말의 특성을 SEM, HR-TEM, XRD, PSA 및 Image analyzer를 통하여 분석하였다. 본 연구를 통하여 반응시간 120분의 조건에서 평균 크기 약 $5.5\;{\mu}m$ 및 $0.2\;{\mu}m$ 두께의 판상은 분말을 제조하였다. 반응조건 중$NH_4OH$ 및 $PdCl_2$의 농도가 증가함에 따라 분말의 크기가 증가하였다. 또한 PVP 농도가 증가함에 따라 판상 은 분말의 두께는 감소하였다. Platy silver powders with varied size and thickness were prepared by polyol process with $PdCl_2$ in ethylene glycol and characterized its properties and investigated the effects of reaction time, $NH_4OH$, PVP(poly-vinylpyrrolidone) and $PdCl_2$. The characteristics of the products were verified by scanning electron microscopy(SEM), high resolution transmitted electron microscopy(HR-TEM), X-ray diffraction(XRD) and particle size analyzer(PSA) and image analyzer. Platy silver powder was prepared about $5.5\;{\mu}m$ of size and $0.2\;{\mu}m$ at 120minute. It was found that the size of powders increased by the increasing of $NH_4OH$ and $PdCl_2$ concentrations, and the thickness of powders was decreased by increasing of PVP concentration.
웰다잉 인식과 사전연명의료의향서 작성 관련 지역약국 상담서비스 이용 의향
신기웅,손현순 한국임상약학회 2021 한국임상약학회지 Vol.31 No.2
Background: The Life-Sustaining Treatment Decision-Making Act has allowed anyone aged 19 or older to sign an Advance Directive not to receive life-sustaining treatment when they are in the ‘death process’. Recently, the Korean Pharmaceutical Association announced to raise awareness of the Advance Directive to the general public through community pharmacies across the country. This study aimed to investigate the public’s willingness to accept pharmacist’s consultation regarding the Advance Directive and to present future directions to pharmacists Methods: This cross-sectional questionnaire study using 16-items was conducted in adults, Study subjects were recruited by convenience sampling method during August 5-15, 2020. Results: Of 460 respondents, 51.7% were younger than 30-year-old and 58.7% were not in the healthcare field in terms of job or major. 60.2% knew about the Advance Directive and 81.7% agreed the necessity to sign when healthy. 50.0% had the willingness to consult with pharmacists on the Advance Directive for well-dying and 80.4% preferred verbal explanation together with written information. Simple linear regression analysis results showed a significant relationship between trust in pharmacists or satisfaction with pharmacist’s communication and willingness to use pharmacist’ consultation on the Advance Directive (1-point increases in values measured on a five-point scale are associated with 0.464 and 0.486 increases, respectively.) Conclusion: This study suggests that pharmacists need to improve the public’s trust and communication capability to satisfy with public’s demands on well-dying service.
Hardware Design of MIPI C-PHY Compatible CSI-2/DSI Rx Interface
신기웅,김영형,정동규,이용환 아이씨티플랫폼학회 2017 JOURNAL OF PLATFORM TECHNOLOGY Vol.5 No.4
In MIPI specification where mobile interfaces are defined, interfaces for camera and display is stated in separately. The usage for camera and display interfaces are individualized into CSI-2 and DSI, respectively. However, boundary between CSI-2 and DSI is not absolute. DSI which is devised originally for display is also used for camera interface in several cases. Therefore, we design hardware that can support both camera and display interfaces. C-PHY is newly released to replace the D-PHY. Comparing with D-PHY, the C-PHY supplies higher throughputs and requires less number of pins. In our design, both C-PHY and D-PHY can be connected. The hardware design was verified in RTL by Modelsim and the verification of the operation was conducted by FPGA implementation on Atrix-7. The implementation result from FPGA shows that our design can support QHD (2,560×1,440) display at 60fps.