Purs Lane의 유용성분과 아질산염 소거능 검색

김향숙,변복수,최주희,박지영 충북대학교 교육생활연구소 2001 생활과학연구논총 Vol.4 No.-

This study was carried out to examine the useful components of Purs Lane and their nitrite scavenging effect. Leaves and stems were separated and analyzed fo general chemical composition, amino acid composition, and dietary fiber contents. Anti-oxidant nutrient such as total vitamin C, total phenol ice, and vitamin E contents were also analyzed. Nitrite scavenging effects of methanol extract and aqeous extract were examined.

최대운동부하시 단련자와 비단련자의 호흡순환기능 비교연구

유승희,김복현,송종국,윤형기,박찬호 경희대학교 체육과학연구소 1996 體育學論文集 Vol.24 No.-

We studied the differences of cardiorespiratory function of the untrained group and the trained group. The findings are following: 1.In ventilation, trained group was higher than untrained group. In addition, there was significant difference(p〈.001) at 60% and 85% exercise levels and All-out time. 2.In respiratory rate, tranined group was higher than untrained group. In addition, there was significant difference(p〈.01)at 85% exercise level and All-out time. 3.In respiratory gas exchange, trained group was lower than untrained group. In addition, there was significant difference(p〈.01) at All-out time. 4.In oxygen intake per weight, trained group was higher than untrained group. In addition, there was significant difference(p〈.001) at 40%, 60%, and 85% excercise levels and All-out time. 5.In heart rate, trained group was lower than untrained group. In addition, there was remarkable difference(p〈.0901) at rest.

성인 암환자의 질병 특성에 따른 증상발생 정도

허혜경,이은현,이원희,소향숙,정복례,강은실 성인간호학회 2002 성인간호학회지 Vol.14 No.3

Purpose: This study was to investigate symptom occurrence related to the disease characteristics of patients with cancer. Method: A total of 301 patients with cancer participated in this study. The participants were recruited from University Hospitals located in Seoul, Wonju, Kwangju, Daegu, and Pusan. Data collection was performed by using a questionnaire on symptom occurrence. The obtained data was analyzed using SPSS computer program that included descriptive statistics, Pearson correlation, one-way ANOVA, and t-test. Result: The mean score of fatigue was the highest (3.24), followed by loss of appetite, lack of concentration, change in appearance, pain, insomnia, change in bowel pattern, nausea/vomiting, coughing, and dyspnea. Most symptoms were significantly correlated with each other. The level of symptom occurrence in patients with lung cancer or cervix cancer was significantly higher than the level in patients with stomach cancer. Patients receiving radiation therapy or a combined therapy of radiation therapy and chemotherapy experienced significantly higher level of symptom occurrence significantly higher level of symptom occurrence than those receiving chemotherapy only. Also, female patients experienced higher level of symptom occurrence than male patients did. Conclusion: The sites of cancer, types of treatment, and gender influence the level of symptom occurrence of patients with cancer. Thus, these variables should be considered when assessing and planing for symptom occurrence of patients with cancer.

Screening of skin whitening agents from natural sources which having radical scavenging activity and tryrosinase inhibitory activity

Hyang-Bok Lee(이향복),So Young Ahn(안소영),Young-Bum Kim(김영범),Eun Ki Kim(김은기) 한국생물공학회 2004 한국생물공학회 학술대회 Vol.2004 No.4

Isolation and Purification of Bioactive Materials from Chinese Plant and its Mechanism in melanoma cells

Hyang-Bok Lee,Duc T.M. Nguyen,Dung H Nguyen,Lyun-Hwa La,Uyen D. P. Lun,Jung-Hyun Kim,Jung-Hyun Shin,Eun-Ki Kim 한국생물공학회 2007 한국생물공학회 학술대회 Vol.2007 No.4

Enzymatic Synthesis of Nicotiflorin from Tea Seed Extract

Hyang-Bok LEE,Eun-Ki KIM,Dae-Won CHUNG 한국생물공학회 2010 한국생물공학회 학술대회 Vol.2010 No.10

철도 건설선 분야별 인터페이스 관리의 필요성

유향복(Hyang-Bok Ryoo),최태수(Tae-Su Choi),강대열(Dae-Yeol Kang),전광주(Kwang-Joo Jeon),우철식(Cheol-Sik Woo),권순호(Soon-Ho Kwon),정준호(Joon-Ho Jeong) 한국철도학회 2018 한국철도학회 학술발표대회논문집 Vol.2018 No.10

철도의 건설은 새로운 노선을 만드는 것과 기존의 노선을 개량하는 것으로 구분하고 있다. 최근 신규 노선의 건설 기조는 준고속형 열차를 운행할 수 있도록 200km/h 이상으로 건설되고 있다. 고속철도는 300km/h급과 350, 400km/h까지 설치 운영되고 있다. 신규 건설선에서의 분야별 인터페이스는 철도의 장점인 안전을 확보하기 위한 일련의 절차와 공사시행의 과정이라 할 수 있다. 열차운행에 필요한 전기,신호,통신설비의 적절한 배치와 시공을 위하여 선행공정인 노반의 설계와 공사 진행중에 분야별 인터페이스가 필요하게 된다. 그 동안 개통되었거나 공사 진행중인 사업에서의 토목시공 전기설비 인터페이스 사례를 검토하여 향후 철도 건설선의 적정한 관리방안과 개선점을 도출하여 안정적인 전기분야 시스템 구축이 가능하도록 추진 할 필요가 있다. Construction of railways is divided into creating new lines and improving existing lines. Recently, the construction of new line has been built at 200km/h or more to allow for the high-speed type trains to drive. The high-speed railway is installed and operated up to 350km/h, 400km/h in the 300km/h class. The interface by field in the new construction line can be said to be a series of procedures and a process of construction for ensuring safety which is advantage of railway. In order to properly arrange and install the electricity, signals and communication equipment necessary for train operation, the field-specific interface is required in the process of civil design and construction. It is necessary to proceed to establish a stable electrical field system to derive the appropriate management methods and improvement points of railway construction lines in the future by examining the case of civil construction electrical equipment interfaces in open projects or under construction projects

국내 고속철도 증속을 위한 전차선로 요구조건 분석

유향복(Hyang-Bok Ryoo),박민주(Min-Ju Park),정상국(Sang-Gug Jeong),양인동(In-Dong Yang),박윤철(Yoon-Cheol Park) 한국철도학회 2016 한국철도학회 학술발표대회논문집 Vol.2016 No.10

우리나라의 고속철도 전차선로는 300km/h 급(경부), 350km/h 급(호남 및 수도권), 400km/h 급(호남)이 건설되어 운영되고 있다. 경부고속철도는 프랑스로부터 도입된 설비로 설계속도는 350km/h 이나 최고운행속도는 파동전파속도의 70% 수준인 308km/h 로 제한되고 있다. 호남고속철도는 설계속도와 최고운행속도가 동일하게 350km/h(400km/h 일부)로 건설되었다. 수도권고속철도는 350km/h 급으로 설계하였으나 TPS 결과에 따라 최고운행속도를 310km/h 수준으로 하여 가선장력을 20kN 으로 적용 설치하였다. 향후 수도권고속철도 선로조건에서 310km/h 이상 증속이 가능한 차량이 도입될 경우 전차선로의 일부 개량이 필수적으로 요구된다. 본 논문에서는 최고속도별 전차선로 동특성과 가선장력간의 관계를 분석하여 350km/h 로 증속시 전차선로의 시설개량에 대한 방안을 제시하고자 한다. The Catenary system of Korean High Speed Railways (HSR) is currently under operation at speeds of 300km/h (Gyeongbu HSR) and 350km/h (Honam HSR) in Korea. The Gyeongbu HSR(Seoul~Busan) adopted from the French TGV, was originally designed to run at speeds of 350km/h, but the maximum operating speed is limited to 308km/h, which is 70% of wave propagation speed of catenary system. The Honam HSR(Osong-Gwangju) was designed and constructed so that it can run up to speeds of 350km/h. Suseo-Pyeongtaek HSR is being constructed for the maximum operating speed of 310km/h lowering the tension of the catenary from 26kN to 20kN, even though the designed speed was 350km/h. If Korea adopts new rolling stock which can run at speeds over 310km/h under current railway conditions, we cannot delay the improvement of the catenary system. This paper is to suggest the best ways to improve the catenary facilities in order to accelerate the train speeds to 350km/h by analyzing the relationship between catenary system’s dynamic characteristics and tensions, where between electric car lines, depending on the various maximum speeds.

전기철도 전원공급 안정화 계획 및 군포변전소 개량

유향복(Hyang-Bok Ryoo),김동철(Dong-Cheol Kim),손동식(Dong-Shik Son),이주한(Ju-Han Lee),최단비(Dan-Bi Choi) 한국철도학회 2020 한국철도학회 학술발표대회논문집 Vol.2020 No.7

우리나라의 전기철도는 1960년대 무연탄 수송을 목적으로 산업선으로부터 전기철도가 건설된 이후 1974년 수도권 1호선 전철망이 개통되면서 대도시 위주의 도시철도가 건설되었고, 1990년 중반부터 주요 간선의 전철화가 본격적으로 추진되었다. 대도시권에는 주로 전동차가 운행되었고 주요 간선에는 전기기관차의 운행을 목적으로 전철화가 진행되었고, 2004년 경부고속철도가 개통되면서 전원공급에서도 일반철도에 비해 대용량 부하로 변경되었다. 전기철도 건설 계획 당시의 전기차량 운행수요는 대도시권 인구집중화와 도시간 이동수요의 증가로 열차운행이 대폭적으로 증가하게 되어 전철전원 공급계통의 과부하를 초래하게 되었다. 또한 건설로부터 장기간 사용으로 인한 노후시설의 개량도 요구된다. 이에 따라 국가 전기철도망의 전철전원 공급계통에 대하여 전면적이며 순차적인 개량계획을 수립하여 우선 개량이 요구되는 노선부터 개량을 추진하고 있다. 수도권의 의정부변전소가 개량을 완료하였고, 서부권의 군포변전소를 금정변전소로 변경 신설하는 공사가 최근에 완료되었다. 아울러 경부고속철도시험선 구간의 변전설비에 대한 전면개량을 계획하고, 호남선 노안변전소, 중앙선 매곡변전소, 경인선주안변전소 등 간선구간의 변전용량 증설이 병행하여 진행되고 있다. 이러한 개량사업을 추진함으로서 전기철도망에 안정적으로 전원을 공급하여 열차안전운행과 여용객의 편의증진에 기여할 것이다. South Korea electric railways were constructed from industrial rail for the purpose of transporting anthracite coal in 1960s. And then, after metropolitan subway line 1 was opend in 1974, railways which were centered in the big city had been built and the major main lines are being to be electric railways from the mid-1990s. Electric locomotives have been mainly operated in the metropolitan area and electric railways were operating for the purpose of being electrified. After Gyeongbu High-Speed Railway was opened in 2004, power supply needs the large load comparing to conventional railways At the time of the construction plan of the electric railway, the demand for electric trains were greatly increased due to the population concentration in the metropolitan area and the increase in intercity movement demand, resulting in an overload of the train power supply system. Also improvement of facilities due to the long-term use from construction is required. Accordingly, by establishing a comprehensive and sequential improvement plan for the electric power supply system of the electric rail network, the improvement is being promoted from the priorities. Uijeongbu substation in metropolitan area were improved and Geumjeong substation in western area have been recently built for replacing the time-worn Gunpo substation. In addition, substation facilities will be planning to be improved in the test section of the Gyeongbu High-Speed railway, and also Noan substation in Honam line, Maegok substation in Jungang line and Juan substation in Gyeongin Line are being improved expanding substation capacity load in the main lines. By promoting the improvement project, it will contribute to safety operation and convenience by stably supplying power to the electric rail network.

호남고속철도 기존선 구간의 지상신호시스템 고속화 설계시공 및 검증

유향복(Hyang-Bok Ryoo),최태수(Tae-Su Choi),전광주(Kwang-Joo Jeon),양표욱(Pyo-Wook Yang),박준우(Joon-Woo Park),김학현(Hak-Hyun Kim) 한국철도학회 2019 한국철도학회 학술발표대회논문집 Vol.2019 No.5

호남고속철도의 경제적인 건설을 위하여 전체 77.6km 중 광주송정~고막원간 26.4km의 기존선을 고속화하는 방안으로 기본계획이 변경되었다. 이 구간은 이미 ATP 열차제어시스템이 설치되어 운영되는 노선으로 모든 열차가 160km/h로 운행되고 있다. 사업의 효과 극대화를 위하여 기존선 구간의 속도향상 필요성이 대두되었고 우리나라 최초로 운행선에서 ATP 시스템을 230km/h로 고속화하는 사업이 추진되었다. 본 논문에서는 기존선 구간에서 열차제어시스템을 고속화 한 설계시공 사례와 본 시스템의 안전성을 입증하는 시설물검증시험을 알아보고 향후 다른 노선에서 고속화하는 사업에 활용 요건을 제시하고자 한다.