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Advanced Dual Refrigerant Expansion Cycle for LNG Liquefaction
김민기,김문규,이기환,김효빈,이동훈,민준호,김진모,Kim, Minki,Kim, Mungyu,Lee, Kihwan,Kim, Hyobin,Lee, Donghun,Min, Joonho,Kim, Jinmo Korea Institute of Plane Engineering and Construct 2019 플랜트 저널 Vol.15 No.2
기존 메탄 & 질소 팽창 사이클의 효율 개선을 위해 2개의 메탄 팽창 공정 (cold composite curve에 변곡점을 하나 더 추가하기 위해 warm & cold 2개 공정으로 나눔)과 1개의 질소 팽창 공정을 사용한 천연가스 액화 사이클을 소개하기 위한 논문이다. 이전 질소 팽창 사이클 및 메탄 & 질소 사이클과 비교했을 때, 13.92 및 13.13에서 12.08 kW/ton/day로 효율이 8~15% 정도 개선되었다. 순 현재가치(NPV) 기준으로 한 수명 주기 비용 분석(LCC analysis) 또한 약간의 CAPEX 증가는 있지만 프로젝트 순 현재가치가 개선된 결과를 보여준다. This paper presents a LNG Liquefaction cycle configuration using two stages of methane expansion (i.e. spliting into two stages as warm & cold to generate an additional inflection point within a cold composite curve) and a single stage of nitrogen expansion to improve the efficiency of the conventional Methane & Nitrogen Expansion Cycle. In comparison with Double Nitrogen Expansion Cycel and Methane & Nitrogen Expansion Cycle, the cycle efficiency has increased approximately from 13.92 and 13.13 to 12.08 kW/ton/day (8~15% efficiency increase). A Life Cycle Cost (LCC) analysis based on Net Present Value (NPV) also show an improvement in therms of project NPV, against a minor increment of a CAPEX.
교통사고 후 발생한 경항통 환자에 대한 부양, 곤륜혈의 온침 병행치료 증례보고
최강민,김효빈,김영일 大田大學校 附屬 韓方病院 2019 惠和醫學 Vol.28 No.2
Objectives : The aim of this study was to observe the clinical effect of warming acupunture therapy at Buyang(BL59), Golyun(BL60) in a traffic accident patient with neck pain. Methods : A 32-years-old, female patient with neck pain was treated by warming acupunture therapy at Buyang(BL59), Golyun(BL60) from April 28th to May 5th. The improvement of the patient's neck pain was evaluated by Visual Analog Scale(VAS), Pain Rating Score(PRS) and Neck Disability Index(NDI). Result : After treatment, flexion & extension VAS was decreased from 7.0 to 3.0 and lateral bending VAS was decreased from 7.5 to 4.0. PRS and NDI was improved 70 to 54, 41 to 35, respectively. Conclusions : The result suggests that warming acupunture therapy at Buyang(BL59), Golyun(BL60) may have therapeutic effect on neck pain patients.
삼차신경통의 한의학적 치료에 대한 국내 임상 연구 고찰
차현지,이예지,김효빈 大田大學校 附屬 韓方病院 2020 惠和醫學 Vol.29 No.2
Objectives:The aim of this study is to review clinical studies on trigeminal neuralgia treatment through Korean Medicine. Methods : We used search engines such as KISS, RISS, KOREAMED and NDSL. We limited cases as idiopathic trigeminal neuralgia without comorbidities. We excluded dissertation. We considered papers published after year 2000. Results : Fourteen studies were searched for this study. Various treatments such as acupuncture therapy, herbal medicine, moxibustion therapy, manipulation, pharmocopuncture, vomiting therapy were practiced for trigeminal neuralgia. Conclusions : All study were case report and evidence level of the searched studies was not high. They reported meaningful improvement through Korean Medicine treatment and these studies implied effectiveness and safety of Korean Medicine for Trigeminal neuralgia.