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나노펄스 플라즈마를 이용한 탈황 시스템의 H<sub>2</sub>O 및 NH<sub>3</sub>, 펄스 인가전압에 따른 입자변환 분석
김영훈,신동호,이건희,홍기정,김학준,김용진,한방우,황정호,Kim, Younghun,Shin, Dongho,Lee, Gunhee,Hong, Keejung,Kim, Hak-Joon,Kim, Yong-Jin,Han, Bangwoo,Hwang, Jungho 한국입자에어로졸학회 2020 Particle and Aerosol Research Vol.16 No.1
Nano-pulse plasma technology has great potential as the process simplicity, high efficiency and low energy consumption for SO<sub>2</sub> removal. The research on the gas-to-particle conversion is required to achieve higher efficiency of SO<sub>2</sub> gas removal. Thus, we studied the effect of the relative humidity, NH<sub>3</sub> concentration and applied voltage of the nano-pulse plasma system in the gas to particle conversion of SO<sub>2</sub>. The particles from the conversions were increased from 10 to 100 nm in diameter as relative humidity, NH<sub>3</sub> concentration, applied voltage increases. With these results, nano-pulse plasma system can be used to more efficient removal of SO<sub>2</sub> gas by controlling above parameters.
Lumbar Interbody Fusion and Osteobiologics for Lumbar Fusion
김영훈,Ha Kee-Yong,Kim Youn-Soo,Kim Ki-Won,Rhyu Kee-Won,Park Jong-Beom,Shin Jae-Hyuk,Kim Young-Yul,Lee Jun-Seok,Park Hyung-Youl,Ko Jaeryong,Kim Sang-Il 대한척추외과학회 2022 Asian Spine Journal Vol.16 No.6
Lumbar interbody fusion (LIF) is an excellent treatment option for a number of lumbar diseases. LIF can be performed through posterior, transforaminal, anterior, and lateral or oblique approaches. Each technique has its own pearls and pitfalls. Through LIF, segmental stabilization, neural decompression, and deformity correction can be achieved. Minimally invasive surgery has recently gained popularity and each LIF procedure can be performed using minimally invasive techniques to reduce surgery-related complications and improve early postoperative recovery. Despite advances in surgical technology, surgery-related complications after LIF, such as pseudoarthrosis, have not yet been overcome. Although autogenous iliac crest bone graft is the gold standard for spinal fusion, other bone substitutes are available to enhance fusion rate and reduce complications associated with bone harvest. This article reviews the surgical procedures and characteristics of each LIF and the osteobiologics utilized in LIF based on the available evidence.
김영훈,최영진,Kim, Young-Hoon,Choi, Young-Jin 한국디지털정책학회 2008 디지털융복합연구 Vol.6 No.4
Changed the business environment, private sector focuses on the performance management, so to manage the performance he uses BSC that overcomes the limitation of financial indicators. Also, it is getting emphasized to evaluate the performance about services that the public sector provides and obliged for the public sector to be responsible for managing and improving its performance as the private sector has been doing. But lacks of knowledge and experience on performance management and evaluation are blocking the public sector from introducing and implementing new performance management systems. To solve those problems, this study has derived general guidelines and KPIs that public sector should keep in mind when BSC is introduced new management system. This study focused on the public hospital which is the performance management and evaluation system of Government administration.
에칭법을 이용한 실리콘 웨이퍼 표면 근처에서의 금속 분순물의 정량
김영훈,정혜영,조효용,이보영,유학도,Kim, Young-Hoon,Chung, Hye-Young,Cho, Hyo-Yong,Lee, Bo-Young,Yoo, Hak-Do 대한화학회 2000 대한화학회지 Vol.44 No.3
실리콘 웨이퍼를 일정한 두께로 에칭하여 실리콘 웨이퍼 표면 근처의 특정영역에 존재하는 금속불순물을 정량하였다. HF와 $HNO_3$의 부피비를 1:3으로 혼합한 용액 5mL로 20분간 실리콘 웨이퍼와 반응 시켰을 때 1${\mu}m$ 두께로 웨이퍼 전면을 균일하게 에칭할 수 있었다. 에칭 후, 용액을 중발하기 위해 마이크로파 오븐을 사용하였는데 증발과정에서 spike한 Cu, Ni, Zn, Cr, Mg 및 K의 회수율은 99∼105%였다,Cu를 오염시킨 epitaxial 실리콘 웨이퍼의 경우 에칭법으로 전처리를 하여 ICP${\cdot}MS$로 측정한 결과, Cu는 뒷면의 표면으로부터 1∼2${\mu}m$ 안의 polysilicon영역에 집중적으로 분포하였고 Cu 농도를 1${\mu}m$두께의 범위에서 정량할 수 있었다. The metal impurities in specific regions at near surface of silicon wafer were determined by constant depth etching·lt is possible to etch uniformly over the entire wafer surface by 1$\mu\textrm{m}$ depth with 5 mL of etching solution made up of HF and HNO$_3$ mixed by l:3 volume ratio. The microwave oven was used to evaporate the solution after etching. After spiking, The recoveries of Cu, Ni, Zn, Cr, Mg and K were found to be 99∼105%ted in polysilicon region and could be quantified by 1$\mu\textrm{m}$ depth.
김영훈,Kim, Young-Hun 한국기술사회 2008 技術士 Vol.41 No.5
Recently, the shipbuilding market of the world is in prosperous days. The Korean shipbuilders have the highest competitiveness in the world shipbuilding market with up-grade of the capacities both ship design and the shipbuilding technologies.
김영훈,장태섭,Kim, Young-Hoon,Jang, Tae-Soep 대한생물정신의학회 1994 생물정신의학 Vol.1 No.1
The introduction of lithium salts for the treatment of mood disorder by Code in 1949 was a major therapeutic breakthrough. Yet it is far from the universal therpeutic agent in the treatment of mood disorders. Indeed, some acutely manic patients do not respond adeqately to lithium and some individuals experience breakthrough affective episodes during lithium maintenance. In the last decode, it has become c1ear that a significant number of patients with more highly recurrent disorders may require alternative or enhanced forms of prophylactic treatment. For these reasons, a variety of other drugs hove been employed for the treatment and prophylaxis of mood disorders. Efforts to develop new pharmacologic strategies for mood disorder hove included a diverse array of medications, ranging from potent benzodiazepines to novel neuroleptics and from anticonvulsants to calcium channel blockers. The anticonvulsants appear particularly useful in cases of dysphoric mania and rapid cycling state, subforms of bipolar disorder that respond quite poorly to conventional treatments. Among all of these new pharmacologic strategy, carbamazepine and sodium valproate have received the broadest clinical applications as maintenance therapies. The data documenting the short-term antimanic effectiveness of the calcium channel blocker verapamil and benzodiazepins such as clonazepam and lorazepam appear also promising. A number of other theoretically interesting, as well as clinically relevant therapies, which are not presently employed routinly, hove also been studied, including 2 blocker clonidine, atypical antipsychotic clozapine, cholinomimetics, 5-HT enhancers, thyroid and magnesium preparations. Now prophylaxis in mood disorder remains a considerable therapeutic challenge. Controlled testing of the prophylactic efficacy of compounds such as carbamazepine, valproic acid, and the calcium channel blockers represent important next step in the clinical trials for mood disorder.
Bayesian Reliability Estimation for the Rayleigh Distribution
김영훈,손중권,Kim, Yeung-Hoon,Sohn, Joong-K. The Korean Data and Information Science Society 1993 한국데이터정보과학회지 Vol.4 No.-
This paper deals with the problem of estimating a reliability function for the Rayleigh distribution. Using the priors about a reliabity of real interest some Bayes estimators and Bayes credible sets are proposed and studied under squared error loss and Harris loss.