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김중곤,곽정훈,정광화,한덕우,유병기,안희권,라창식,Kim, Jung Kon,Kwag, Jung-Hoon,Jeong, Kwang-Hwa,Han, Deug-Woo,Yu, Byeong-kee,Ahn, Hee-kwon,Ra, Chang-Six 한국축산환경학회 2015 한국축산시설환경학회지 Vol.21 No.3
According to the volumetric mixing rate of dairy cow manure (DCM) and moisture control materials such as decomposed manure (DM) and sawdust (S), 6 reactors (DCM only (R1), DCM : DM = 1:1 (R2), DCM : DM = 1.5:0.5 (R3), DCM : DM = 0.5:1.5 (R4), DCM : DM:S = 1:0.5:0.5 (R5) and DCM : S = 1:1 (R6)) were used for composting of dairy cow manure. Among the composting reactors, composting reactor of R5 was shown the highest temperature of the compost as a $66^{\circ}C$ during composting period. After 3 weeks composting, moisture content of R5 and R6 were 51% and 51.3%, respectively. These values were satisfied with the moisture content standard of livestock manure compost of Korea. We concluded that decomposed manure may be a good moisture control material for dairy cow manure composting when it is used in mixture with sawdust. The optimum volumetric mixing ratio of dairy cow manure and moisture control materials was 50% of livestock manure, 25% of decomposed manure and 25% of sawdust.
중심와를 침범한 감염성 포도막염에서 발생한 황반원공의 자연폐쇄 1예
김민우(Min Woo Kim),김동윤(Dong Yoon Kim),김윤전(Yoon Jeon Kim),조수근(Soo Geun Joe),이주용(Joo Yong Lee),김중곤(June Gone Kim) 대한안과학회 2016 대한안과학회지 Vol.57 No.1
Purpose: To report a case of macular hole secondary to presumptive infectious posterior uveitis involving the fovea that spontaneously resolved after medical treatment. Case summary: A 33-year-old male visited our clinic for decreased visual acuity in his left eye. He was treated with immunosuppressive therapy including steroid after bone marrow transplantation. Best corrected visual acuity (BCVA) was 0.05 in the left eye. Slit lamp examination showed mild anterior vitritis, and fundus examination showed a macular hole with surrounding whitish infiltration at the fovea. Spectral domain optical coherence tomography (SD-OCT) revealed a full thickness macular hole with surrounding hyper-reflective masses with an infiltration-like appearance involving all retinal layers. Serum anti-toxocara IgG was positive (ELISA), and eosinophil count and immunoglobulin E was elevated. Under diagnosis of presumptive ocular toxocariasis, the patient was treated with albendazole. After medical treatment for toxocariasis, the whitish foveal infiltration became smaller and more discrete. SD-OCT revealed spontaneous closure of the macular hole, and BCVA was improved to 0.4 after a 4-month follow-up. Conclusions: We report a macular hole complicated by presumptive infectious posterior uveitis that experienced spontaneous closure after medical treatment for underlying infection.
공항철도 열차운행의 효율적, 안정적 운영 방안에 관한 연구
김중곤(J. G. Kim),신택현(T. H. Shin),채윤석(Y. S.Chae) 한국철도학회 2018 한국철도학회 학술발표대회논문집 Vol.2018 No.5
공항철도는 대한민국 관문인 인천국제공항에서 서울역까지 운행하는 우리나라 유일의 공항 연계철도이다. 대한민국을 방문하는 많은 여행객 및 외국인들이 가장 먼저 접근하고 이용하는 대한민국의 상징적 대중교통인 것이다. 이러한 공항철도 운행노선에 2014 년 6 월부터 KTX 열차가 AREX 열차와 병행하여 운행되면서 여러 가지 문제점이 나타났으며, 특히 2018년 평창 동계올림픽 기간에는 KTX 열차가 145%(32 회) 증편되어 운행되면서 AREX 열차는 안정적으로 운행하지 못하고 많은 열차가 지연운행 등 비 정상적 운행이 이루어졌다. 본 논문에서는 대한민국의 상징적 교통수단인 공항철도를 효율적, 안정적으로 운영하기 위하여 KTX 열차와 AREX 열차가 병행 운행되면서 나타난 문제점을 부각(浮刻)시켜 개선을 유도하고, 운영자 측면에서의 대안을 제시하여 국내 고객 및 외국의 방문객과 관광객에게 안전하고 편리한 이용 서비스를 제공하고자 한다. Airport Railroad is Korea′s only airport-linked railway that runs from Incheon International Airport to Seoul Station. It is a symbolic public transport of Republic of Korea in that many travelers and foreigners visiting Korea use first. As of June 2014, KTX train began to operate in parallel with AREX train on the route of the airport railway. And in particular, during the 2018 PyeongChang Winter Olympic Games, KTX trains were increased by 145%(32 operations added). As a result, AREX trains became unstable and many trains resulted to be delayed. In this paper, the authors will highlight problems caused by such a problematic parallel operation of KTX and AREX, and induce the countermeasure to improve its dysfunction, and then suggest effective alternatives for safe and convenient services to domestic and foreign visitors and tourists.