도심에 거주하는 남성 노인에 있어서 유산소 운동능력이 혈관내 염증수치와 동맥경직도에 미치는 영향

안기만(Ki man Ahn),김윤신(Yoon shin Kim),박원하(Won Hah Park) 한양대학교 고령사회연구원 2012 한양고령사회논집 Vol.3 No.1

Experimental epidemiology and clinical studies have provided strong evidence that physical exercise has beneficial effects on multiple physiological variables affecting cardiovascular health. Cardiopulmonary function has been previously associated with atherosclerotic disease and coronary events. The aim of this study was to examine the higher levels of cardiopulmonary function are associated with lower levels of hs-CRP(high sensitive C reactive protein) and baPWV(barcahial ankle pulse wave velocity) in Korean elderly men. Study participants were 115 elderly men (mean age 62.5±2.2) participated in the research. Age, body mass index(BMI), resting heart rate, blood pressure, medical history, lipid profile, high sensitivity C-reactive protein(hs-CRP), Brachial-ankle pulse wave velocity (ba-PWV), cardiopulmonary function were measured. VO2peak higher elderly man had a significantly decreased hsCRP(0.22±0.26, p<0.05) and PWV (1439.1±159.9, p<0.05). In addition, HDL-C(55.2±14.2, p<0.05) levels was significantly increased and LDL-C(1193±21.7, p<0.05) level was decreased. This study show that VO2peak levels are positively correlated with hsCRP, HDL-C and PWV. Apparently healthy subjects with increased inflammatory markers have increased systemic arterial stiffness, which might reflect early atherosclerotic changes. Higher physical conditioning status, indexed by VO2peak, was associated with reduced arterial stiffness and hsCRP and increased HDL-C. The results of our study suggest that high cardiopulmonary function reduces hsCRP levels and improves PWV, HDL-C in Korea elderly men. 심혈관질환은 현재 선진 산업 국가들에서 성인 사망 제 1원인으로 알려져 있다. 심혈관질환에 의한 사망률은 나이가 증가하면서 더 높아지는 것으로 보고되고 있다. 이러한 심혈관질환을 일으키는 위험인자로는 나이, 신체활동의 부족, C반응성 단백(CRP), 혈관경직도(baPWV) 등이 심혈관질환을 높이는 것으로 보고되고 있다. 무엇보다 인구의 고령화로 인해 심혈관질환이 증가하고 있다는 것이다. 심혈관질환을 예방하기 위해서는 생활 습관 개선이 중요하며 그 중에서도 신체활동은 매우 중요하다. 하지만 고령의 건강한 남성을 대상으로 심폐기능과 관상동맥질환의 위험인자와의 관련성을 살펴본 연구는 부족하다. 따라서 본 연구는 60세 이상의 건강한 노인 남성(62.5±2.2)을 대상으로 심폐체력의 수준에 따른 혈중 C반응성 단백(CRP), 혈관경직도(baPWV)의 변화를 알아보고자 했다. 심장병 증상이 없는 노인 남성 115명을 대상으로 하였으며, 심폐기능 측정을 위해 운동부하검사를 실시했다. 혈액검사를 통해 혈중 CRP와 동맥경직도를 평가하기위해 baPWV 검사를 실시하였다. 그 결과 혈중 CRP는 심폐기능이 높은 그룹에서 0.22±0.26로 심폐기능이 낮은 그룹의 0.49±0.49 보다 유의하게 낮은 것으로 나타났다(p<0.05). baPWV역시 심폐기능이 높은 그룹에서 1439.1±159.9로 심폐기능이 낮은 그룹의 1523.7±236.1보다 낮게 나타났다(p<0.05). 따라서 건강한 노인 남성의 경우 심페기능이 좋은 그룹에서 심혈관질환 위험인자인 CRP와 baPWV가 유의하게 낮은 것으로 나타났다.

복합화력발전소의 발전용수 펌핑시스템의 자동화에 따른 경제적 효과에 관한 연구

元萬根,白壽鉉 동국대학교 산업기술환경대학원 1998 산업기술논총 Vol.4 No.-

Most of the power plant water pumping facilities rely on manual operation. Besides, It is difficult to trouble diagnesis and arrangement and need long time for find out the cause analysis. In this papers, It make use of up to date computer technology and information communicate technology so as to improve and automation of pumping system for power plant water. The automatic equipment of pumping system for power plant water with computer, graphic board, remote terminal unit bring supervisory control and data acquizition system into practice. Therefore, it is obtained the economic effect and good efficiency for manpower reduction.

매체와 세계상 : 맥루언과 하이덱거의 기술철학 비교 Comparision McLuhan with Heidegger

원만희 서강대학교 언론문화연구소 2002 언론문화연구 Vol.18 No.-

제 1형 신경섬유종증 환자에서 발생한 위장관 간질종양 1예

원경준,이준,변유미,조민근,한경택,김원,홍란,임성철,김경종,김영대,박찬국,김만우 朝鮮大學校 附設 醫學硏究所 2007 The Medical Journal of Chosun University Vol.32 No.2

Gastrointestinal stromal tumor (GIST) is the most common non-epithelial neoplasm arising in the gastrointestinal tract, but this tumor is rarely seen in association with type l neurofibromatosis (NFl) Generally, the majority of GISTs are isolated neoplasm and they are sporadically found in the stomach, but the GISTs in NFl patients are usually multiple and usually found in the small intestine. We report a case of multiple GISTs in the jejunum of a 63-year-old woman diagnosed as NFl accompanied by complication of gastrointestinal bleeding, In this case, Patient had multiple cafe-au lait spots and neurofibroma on skin and had freckling on axilla and groin, and then, we made a diagnosis of NFl. Gastrointestinal bleeding is controlled by resection of multiple GISTs. Generally, only 3-5% of all gastrointestinal bleeding comes from the small bowel. Causes of small intestinal bleeding are angiodysplasia, neoplasm, NSAIDs induced ulcer etc. but, If patients have NFl accompanied by complication of gastrointestinal bleeding, GISTs on small bowel must be considered.

간경변 환자에서 Oro-cecal Transit Time의 측정

원경준,이준,변유미,조민근,조주연,서정균,김영대,박찬국,김만우 朝鮮大學校 附設 醫學硏究所 2008 The Medical Journal of Chosun University Vol.33 No.2

Background: Neurotransmitter like substances in the gut have been proposed to contribute to the overall portal systemic encephalopathy (PSE). The source of the ammonia in patients with PSE is mainly the small bowel, as a result of the conversion of glutamine in the diet to glutamate and ammonia. PSE is highly responsive to changes in diet, to antibiotic therapy and to ingestion of nondigestible disaccharides such as lactulose. This study was performed to evaluate the relationship between PSE and oro-cecal transit time. In addition, performed to evaluate the effect of severity, cause, complications of liver cirrhosis on oro-cecal transit time. Methods: Between August 2006 and February 2007, 48 cirrhotic patients consecutively was enrolled in study their oro-cecal transit time after informed consent was obtained. A non-invasive hydrogen breath test was used to study oro-cecal transit time (OCTT). Result: The OCTT were delayed in cirrhotic patients with PSE compared without PSE (123.3 ± 42.7 min vs 170.0 ± 58.3 min, p<0.05). OCTT tended to prolongate further as the damage in the liver got worse, nevertheless the result was statistically meaningless (p<0.111). Neither presence of ascites or cause of PSE had any influence on gastrointestinal transit. Conclusions: Cirrhotic patients with PSE have more delayed OCTT than without PSE. Further research is needed to find out the relationship between OCTT and severity of liver cirrhosis.

제어모드 순위 자동 선정에 관한 연구

나만균,정동원,신선호 조선대학교 에너지.자원신기술연구소 2003 에너지·자원신기술연구소 논문지 Vol.25 No.1

제어계통의 고신뢰도는 제어 알고리즘의 강인성 및 성능의 향상으로 표현될 수 있으며, 고등 제어 알고리즘의 개발과 진단을 통한 발전소 조건의 변화에 따른 적절한 제어모드를 선정하므로써 달성될 수 있을 것이다. 본 연구에서는 여러 제어 알고리즘의 라이브러리로부터 요구된 필수 요건을 반드시 만족시키면서 목적 비용함수를 최소화하는 제어모드 순위 선정 자동화 기술을 개발하였다 개발된 방법은 발전소 상태의 변화 (운전조건의 변화, 기기고장 및 이상상태 등이 진단기술에 의하여 탐지), 필수 요건 혹은 최적화 요건의 변화에 의하여 적절한 제어모드 순위를 결정하여 운전원에게 제시하므로써 적절한 조치를 취하게 하거나 필요한 정보를 제공하여 준다. High reliability of control systems can be expressed as enhancement of their robustness and performance and can be accomplished by designing advanced control algorithms and selecting appropriate control modes according to changes of plant conditions through diagnostics. In this work, by combining control and diagnostic algorithms, we have developed the automatic design technology of control systems that candetermine control mode priority among a variety of control algorithm libraries according to operating conditions and key requirements of plants. The developed method enables operators to take appropriate actions or provide necessary information to operators by determining the control mode priority according to changes of key and optimizing requirements and/or changes in the states of nuclear power plan.

산업재해 근로자의 직장복귀 예측요인

정원미,박정일,구정완,노영만 大韓産業醫學會 2003 대한직업환경의학회지 Vol.15 No.2

목적: 본 연구는 산업재해 근로자의 직장복귀에 유의하게 영향을 미치는 요인을 알아봄으로써 산업재해근로자의 직장복귀를 위한 재활 프로그램 수립을 위한 기초자료를 제시하고자 수행되었다. 방법: 근로복지공단 36개 지사로부터 2001년 1월부터 3월까지 접수된 13,903명의 장해보상청구서 복사본을 수집하여 이들 중 직업병자 및 외국인 근로자를 제외한 13,385명을 대상으로 계통표본추출하여 3,658명을 연구대상으로 하였다. 3,658명의 장해보상청구서로부터 인구사회학적, 사업장 및 장해 특성, 그리고 국민건강보험공단의 전산자료로부터 부양자수, 직장복귀여부 등에 관한 정보를 얻었으며 카이제곱 검정과 다변량 로지스틱 회귀분석을 이용하여 직장복귀 예측요인을 알아보았다. 결과: 직장에 복귀하지 못하는 유의한 예측요인은 다음과 같다. 인구사회학적 특성에서의 예측요인은 여성, 고령자 그리고 근무기간 2~6년에 비하여 6개월 미만이었다. 사업장 특성의 예측요인은 사업장 규모가 200인 이상에 비하여 29인 미만인 경우, 사업종류가 제조업에 비하여 전기·가스·수도업이었다. 장해관련 특성에서의 예측요인은 상해부위가 손가락에 비하여 발인 경우, 상해종류는 다른 종류에 비하여 골절인 경우이었다. 그리고 장해결과 특성에서의 예측요인은 10~14등급인 경우에 비하여 1-4등급인 경우, 요양기간이 180일 이상인 경우이었다. 결론: 여성, 고령자, 사업장 규모가 작은 경우 그리고 전기·가스·수도업에 종사하는 근로자들이 직장복귀를 하지 못하는 예측요인으로 나타남으로써 이들을 대상으로 한 재활프로그램 계획 수립에 보다 관심을 기울여야 될 것이다. Objectives: In order to obtain information useful in setting up occupational rehabilitation programs, an evaluation was conducted to determine predictive factors of workers' return to work after an occupational injury. Methods: 13,903 records of registered occupationally injured cases identified to have received disability compensation in 1998 were collected from the 36 branch of Korean Labor Welfare Corporation(KLWC). Through simple systematic sampling, a total of 3,658 cases were selected as final subjects. Status of return to work, general characteristics, workplace characteristics, disability characteristics and disability outcome characteristics were collected from the KLWC and National Health Insurance Corporation records (NHIC). For statistical analyses, chi-square test and stepwise multiple logistic regression analysis were applied using the SAS software package program. Results: Negatively affecting significant predictive factors for return to work were included the female gender, age of 50 years or older, 6 month or less of work duration, 1 or less family dependents, workplace with 200 or less employees, electric·gas·waterwork companies, foot injuries compared to finger injuries, fall from elevation, high degree of disability claims (1-4 grade), and period of medical care more than 181 days. Conclusions: The results suggest that the poor rate return to work in occupationally injured workers' is particularly affected by female gender, older-aged employees, and workers employed by electric·gas·waterwork companies. Also, it was more difficult to return to work for workers who received injuries from a fall from elevation and who had longer period of medical care (more than 181days). It is strongly recommended that more efficient and systematic occupational rehabilitation programs be set up, taking into consideration the above mentioned factors.

전이 금속 산화물에 대한 원적외선 방사체의 방사 특성 및 방사 에너지 함수

손만식,이용주,백우현,박경원 국립경상대학교 공과대학 부설 첨단소재연구소 1991 尖端素材 Vol.1 No.-

In order to calculate the radiation characterization of Black Body, Cr₂O₃, MnO₂, Fe₂O₃, CoO, NiO and CuO transition metal oxides for the Far Infrared radiator at 523K we calculated spectral radiant density(SRD,U), spectral radiant intensity(SRI,N), and spectral radiant emittance(SRE,W) which is expressed in terms of wavelength(λ), frequency(ν), wavenumber(?). Also, we investigated integral spectral radiant density(ISRD), percentage of integral spectral radiant density(PISRD), regional emissivity, and total emissivity. As a result, the spectral radiant density, Uλ, Uυ, U? which was the radiant energy functions with wavelength, frequency and wavenumber were different maxima in regions of the SRD spectrum. And the maximum of radiation function with wavelength was different from those with frequency and wavenumber. For wavelength(μm) the ISRD increased in the order Fe₂O₃〈MnO₂〈CoO〈NiO〈Cr₂O₃〈CuO oxide, the PISRD increased in the order CoO〈CuO〈NiO〈Fe₂O₃〈MnO₂〈Cr₂O₃ Oxide, the regional emissivity increased in the order MnO₂〈CoO〈Fe₂O₃〈MnO₂〈≒ Cr₂O₃〈 CuO oxide, and the total emissivity increased in the order Cr₂O₃≒Fe₂O₃〈MnO₂〈CoO〈NiO〈CuO oxide in the Far Infrared radiator at 523K.

한국산 나비 目(Lepidoptera)의 발향린(Androconia)에 관한 주사전자현기경적 연구 III. 네발나비科

박원학,류성만,서경인,이종욱 嶺南大學校 基礎科學硏究所 1992 基礎科學硏究 Vol.12 No.-

한국산 네발나비과에 보고된 77종 중 북한산 12종과 채집하지 못한 21종을 제외한 44종, 670여 개체를 재료로 광학현미경으로 발향린의 유무 및 분포를 확인하였다. 이중 발향린이 관찰된 10종을 대상으로 주사전자현미경으로 그 형태를 비교 연구하였다. 1. 발향린이 관찰된 종은 Brentis ino(R.), Argyronome laodice (P.). A. ruslana (M.). Damora sagana (D.), argynnis paphia (L.), Childrena zenobia (L.), Speyeria aglaja (L.), Fabriciana pallescens (B.), F. adippe (L.), F. nerippe(c.et R. F.) 10종이다. 2. 발향린은 암컷에서는 관찰되지 않았고, 수컷이 앞날개 표면에서만 관찰되었으며, 시맥위에서만 분포한다. 3. 확인, 관찰된 10종의 발향린은 나발막(fimbriae), 경부(neck), 잎새(laminar), 자루병반(foot stalk) 등 발향린의 전형적인 모양을 나타내었으며, 동종내 개체간 변이는 관찰되지 않았다. 4. Argyronome laodice, A. ruslana, Damora sagana, argynnis paphia, Childrena zenobia, Fabriciana pallescens 등 6종에서는 2가지 형태의 발향린이 관찰되었다. 5. 본 연구에서 관찰한 10종은 Subfamily Argynninae아과의 Argynnini족에서만 관찰되었으며, 관찰된 발향린중 Type ⅠⅠ의 형태는 종간에 큰 차이점이 없었고, Type Ⅰ은 많은 형태적 차이를 보이므로 분류학적으로 중요한 형질이라 사료된다. this paper observed through microscope the existance and the distribution of the androconia of the 44 species Nymphalidae among 77 ones that have been reported in Korea, excluding 12 species in North Korea and 21 one's not collected ten species that were observed the androconia among those were chifely compared and studied through Scanning Electron Microscope. 1. The 10 species that observed androconia is Brentis ino(R.), Argyronome laodice (P.). A. ruslana (M.). Damora sagana (D.), Argynnis paphia (L.), Childrena zenobia (L.), Speyeria aglaja (L.), Fabriciana pallescens (B.), F. adippe (L.), F. nerippe(C. et R. F.) 2. The androconia was not found at the female, but only on the dorsal surface of male's fore wings. 3. The androconia of 10 species was not observed intraspecific seasonal variation and individual variation. It was appeared the androconia as general type of fimbriae, neck, laminar and foot stalk. 4. Two types(typeⅠ and Ⅱ) of androconia were observed at the species of Argyronome laodice, A. ruslana, Damora sagana, Argynnis paphia, Childrena zenobia, Fabriciana pallescens. 5. According to this study, the androconia of 10 species observed only Argynnini, subfamily Argynniae. The type Ⅱ of the androconia similar to between species but type Ⅰ was observed multitudes of morphological difference. These difference of type Ⅰ was very important taxonomical characters.

저온유통용 골판지 포장상사 개발에 관한 연구 (Ⅰ) : 골판지의 흡습특성 시험 Characteristics of moisture absorption to corrugated fiberboard

이원옥,윤홍선,정훈,이현동,조광환,김만수 한국식품저장유통학회 ( 구 한국농산물저장유통학회 ) 2003 한국식품저장유통학회지 Vol.10 No.3

농산물의 저온저장 및 고습조건에서 안전하게 유통할 수 있는 골판지 포장상자를 개발하기 위하여 원지의 구성, 라이너의 발수도, 골형태의 차이에 따라 수분흡습 특성과 압축강도와의 관계를 구명하기 위해 각각 원지특성을 달리하여 이중 양면 골판지를 재료로 사용하여 시험하였다. 온도변화에 따른 골판지 함수율 변화는 골판지 원지 종류, 발수도 차이등에 관계없이 거의 일정한 값을 나타냈다. 상대습도 변화에 따른 골판지의 함수율 변화는 상대습도에 크게 영향을 받는 것으로 나타났으며 골판지의 수분흡습은 발수도 보다는 원지에 구서에 따라 영향을 많이 받는 것으로 나타났다. 또한 수직압축강도는 상대습도가 증가함을 따라 크게 감소하여 상대습도가 수직압축강도에 미치는 영향이 매우 크며 상대습도가 증가함에 따른 수직압축강도의 저하비율은 골판지의 종류에 관계없이 거의 같은 것으로 나타났다. 따라서 저온고습 조건에서 안전하게 내용물을 보호할 수 있는 저온유통용 농산물 골판지 상자의 개선을 위해서는 고품질 원지의 생산기술 개발 및 골판지 상자의 구조개선 연구가 우선되어야 할 것으로 판단된다. The hardness of corrugated packaging box decreased during storage period because of high humidity. Therefore, the strength-decreasing factor of corrugated packaging box had to be investigated to determine the compression strength of the corrugated packaging box. This study was conducted to define the characteristics of moisture absorption as well as compression strength of corrugated fiberboard. (1) The moisture content of the corrugated fiberboard was rarely influenced by the kinds of raw materials and water repellent. However, the moisture adsorption of the corrugated fiberboard was shown to be clearly affected by air temperature changes. (2) The moisture content of the corrugated fiberboard was significantly affected by relative humidity. The moisture adsorption of corrugated fiberboard was also greatly influenced by composition of raw materials rather than water repellent. The results indicated that the improvement of raw materials was more effective than the increase of water repellent of corrugated fiberboard to reduce the moisture adsorption of the corrugated fiberboard. (3) The vertical compression strength was significantly decreased with increasing relative humidity. The reduction rate of vertical compression strength was not charged with the increase of relative humidity, which was regardless of kinds of corrugated fiberboard. (4) For improving the strength of the corrugated packaging box, new technique should be found to develop better quality of raw materials. Moreover, the physical construction of corrugated packaging box should be clearly understood because the corrugated packaging box for the agricultural products was usually used for the circumstances of high humidity and low air temperature.