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엄년식,김형경,한정현,김수정,박희준,강신원,Eum, Nyeon-Sik,Kim, Hyung-Kyung,Han, Jung Hyun,Kim, Su-Jeong,Park, Hee-Joon,Kang, Shin-Won 대한의용생체공학회 2012 의공학회지 Vol.33 No.4
In this study, we developed transdermal direct drug delivery device using micro-needle painlessly. We has fabricated micro-needle that is 130 ${\mu}m$ thickness and 250 ${\mu}m$length with 10 ${\mu}m$ spiral groove for rolling down drug. Head part of micro-needle device is composed of 20ea micro-needles, an on-off valve and a protective cap. Glass bottle for containing drug is connected to head part of micro-needle device. We examined the puncture characteristic testing using porcine skin and drug delivery testing using porcine, rat skin with Indian Ink.
실험동물용 가시광선/근적외선 생체 이미징 소형 장비의 개발
엄년식 ( Nyeon Sik Eum ),박희준 ( Hee Joon Park ),정진용 ( Jin Yong Jung ),한정현 ( Jung Hyun Han ),김형경 ( Hyung Kyung Kim ),장은윤 ( Eun Yoon Jang ),이석재 ( Suck Jae Lee ),강병호 ( Byoung Ho Kang ),강신원 ( Shin Won Kang ) 한국센서학회 2012 센서학회지 Vol.21 No.4
In this study, we have developed a mobile-based visible/NIR(Near InfraRed) imaging equipment for the animal testing. This equipment can provide visible, NIR and merged image through the viewer program. Especially, merged image help researcher to understand visual messages at animal in-vivo test. Also, it is available to send real-time images through the smart phone. Researcher can communicate with another researcher who is a long distance away. Also, the equipment was made with portable small size to enable it to commercialize.
장은윤 ( Eun Yoon Jang ),염세혁 ( Se Hyuk Yeom ),엄년식 ( Nyeon Sik Eum ),한정현 ( Jung Hyun Han ),김형경 ( Hyung Kyung Kim ),신용범 ( Yong Beom Shin ),강신원 ( Shin Won Kang ) 한국센서학회 2013 센서학회지 Vol.22 No.2
In this research, we developed a biosensor to detect lung cancer-specific biomarker using Anodic Aluminum Oxide (AAO) chip based on interference and nano surface plasmon resonance (nanoSPR). The nano-porous AAO chip was fabricated 2 μm of pore-depth by twostep anodizing method for surface uniformity. NanoSPR has sensitivity to the refractive index (RI) of the surrounding medium and also provides simple and label-free detection when specific antibodies are immobilized to the Au-deposited surface of nano porous AAO chip. To detect the lung cancer-specific biomarker, antibodies were immobilized on the surface of the chip by Self Assembled Monolayer (SAM) method. Since then lung cancer-specific biomarker was applied atop the antibodies immobilized layer. The specific reaction of the antigen-antibody contributed to the change in the refractive index that cause shift of resonance spectrum in the interference pattern. The Limit of Detection (LOD) was 1 fg/ml by using our nano-porous AAO biosensor chip.
金炯璟 건국대학교 1986 論文集 Vol.23 No.1
Decentralization or divisionalization of business organizations has become a fact corporate life since the end of World War II. Decentralization is a response to uncertainty of company environment. The theory and application of divisional accounting have been a popular topic in recent managerial accounting. The purpose of this thesis is to investigate the financial relationships which exist beween the central management of a divisionalized company and the management of its divisions. And also to examine some accounting problems occured in the measurement of performance. As a rdsult of such investigation, it is to arrieve at recommendations which would attain the more effective coordination and control of divisional operation in accordance with the objectives of the corporation. The essence of decentralitation is the freedom to make decisions. Decentralization is a matter of degree. Total decentralization means minimum constraints and maximum freedom for managers to make decisions, even at the lowest levels. At the other extreme of the continuum, total centralization means maximum constraints and minimum freedom. In practice, organizations are seldom totally centralized or decentralized. Full centrclization is not economic in most instances, because of the impossibility of administering the unavoidable massive volume of decisions at the top-management level. On the other hand, full decentralization implies a collection of completely separate business.