광파이버 변위 센서를 이용한 자기베어링 계의 부상 제어

강종규,신우철,송관의,홍준희 충남대학교 공업교육연구소 2003 論文集 Vol.26 No.1

Five expensive sensors are necessary to control a magnetic bearing system. The sensor price rate of magnetic bearing system is high. So it is necessary that cheap and good sensor is developed. The optical fiber displacement sensor is adaptive to satisfy this condition. We can design magnetically suspended spindle based on static characteristic of optical fiber displacement sensor developed. The controller can be designed by decoupled feedback PD. Therefore, it is simpler than any other controller comparatively.

펄스코로나 방전에서의 NOⅹ 저감 에너지 효율에 관한 실험적 연구

姜宇政,申昌均 충주대학교 산업과학기술연구소 2002 産業科學論文集 Vol.10 No.-

Rapid recent development in industry generated environmental issues. The NOx, the main cause for the air pollution, increases the Ozone-concentration and becomes a factor for the photochemical smog and acid-rain. Thus, the preventive method as well as the inhibitive technique for NOx have been demanded. The purpose of present study is to change the harmful gas using high voltage pulse system. In order to reduce the harmful NOx, experiments were done with changes in gas temperature, NOx initial concentration, C_2H_4 concentration, and the amount of pulse voltage.

하수 슬러지 건조 공정의 경제성 평가에 관한 연구

姜宇政,申澈洙,梁晶模 충주대 2004 産業科學論文集 Vol.12 No.-

To solve the water pollution prevention problems, sewage and wastewater disposal system as the basic facilities are required strongly. However, the production of sewage sludge, a by-product of sewage and wastewater disposal system, is tending to increase. Therefore, efficient disposal method of sewage and wastewater is needed. At present, there are many problems in current disposal methods such as open dumping, ocean disposal, and incineration. These cause secondary environmental problems. Recycling sewage sludge is an alternative method to solve these problems thoroughly and prevent environmental disruption and maximize economic usefulness. This study presents LCA(Life Cycle Assesment) application to analyze the environmental loads and economy of sewage sludge drying process. The obtained results are applied to prepare fundamental understanding and judgement in view of environmental and economical consideration on drying process of sewage sludge by local authorities. The results are as follows; The economic assessment showed that the expense of drying process of sewage sludge was 45,603 won per ton. Among the expense items, the fuel cost is around 35%(15,961 won per ton) and it is the main cause. It is regarded that reducing the fuel can obtain the reduction of the cost and carbon dioxide, major environmental pollution discharge.

Chitinase를 생산하는 Pseudomonas sp. YS-542의 분리 및 특성

강신욱,이준우,방광웅,최희상 慶北專門大學(영주경상전문대학) 2002 慶北專門大學 論文集 Vol.21 No.-

A chitinase-producing bacterium was isolated from soil by selective enrichmentment culture medium. The bacterium was identified as Pseudomonas sp. based on the data obtained from its morphological, cultural and biochemical characteristics. The isolated strain was named Pseudomonas sp. YS-542. The medium for the production of chitinase was consisted of colloidal chitin 1.0%, tryptone 1.0%, MgS04·7H2O 0.2%, K2HP04 0.1%. The optimum cultural temperature, initial pH and time for the best production of chitinase were 25℃, 48hrs and pH 8.0, respectively.

점증적 최대운동이 항산화 효소의 혈중 농도에 미치는 영향

강신범,이상우,김상권,서해근,김준모 東亞大學校附設스포츠科學硏究所 1999 스포츠科學硏究論文集 Vol.17 No.-

The purpose of this study is to examine how exercise stimulus effects on the boold concentration of antioxidant enzymes. And then, the results of analysing the boold concentration of antioxidant enzymes before and after graded maximal exercise based on high school's 7 males, are as follows: 1. The blood concentration of SOD is found to have a significant increase before and after graded maximal exercise. 2. The blood concentration of CAT is found to have a significant increase before and after graded maximal exercise. 3. The blood concentration of CAT is found to have a significant change. As the above results, the severe exercise of short time is found to increase the blood concentration of SOD as well as CAT. And then, the blood concentration of GPX is found not to have a significant exchange. To examine the mechanism of the above results manifestly, it is considered that the deep study based on exercise style, duration time and exercise intensity, should be continued.

남성화 암쥐의 모리스 수중 미로 수행력 : 성에 따른 공간기억력과 테스토르테론 효과의 차이

신성현,박제민,정우영,박문일,서유나,김성곤,강철중 大韓神經精神醫學會 2007 신경정신의학 Vol.46 No.5

Objectives : It is widely accepted that gonadal steroids are involved in organization and activation of sexual dimorphism in the brain areas related with spatial leaming. This study aimed to test the following hypothesis : 1) spatial memory is affected by sex, 2) this difference is related with brain differentiation by exposure to testosterone in the neonatal period, and/or 3) the sexual difference of spatial memory is the result of the interaction between organization of sexual dimorphism in the brain and the circulating testosterone after growing up. Methods : Testosterone enanthate 100 ㎍, ('androgenized') orvehicle ('control') was randomly administered to 28 female and 25 male rat pups within 24 hour of birth. The escape latencies (EL) in Morris water maze were measured in 15 and 16 week of age with vehicle ('baseline') and with 10 μmol/kg of testosterone ('with testosterone'), respectively. Each session Consis-ted of 10 trials, and means of the last 5 trials were analyzed. Results : The baseline EL of the males were significantly shorter than females regardless ofneonatal exposure to testosterone. With testosterone, EL of the androgenized females were significantly shorter than control females and comparable to those of males. Conclusion : Neonatal exposure to testosterone in female rats may develop a tesosterone-dependent male-like spatial leaming system.

Fiberoptic Bronchoscope을 사용한 기관내 삽관의 임상적 고찰

우성,신철,조강희 인제대학교 1984 仁濟醫學 Vol.5 No.1

기관내 삽관은 마취와 호흡 관리에 필요불가결한 요소이나 비탄성 직접후두경으로 삽관이 거의 불가능한 경우가 종종 있다. 이러한 경우 fiberoptic bronchoscope나 laryngoscope를 이용하면 비교적 용이하게 삽관을 할수 있어 본 병원에서 시행한 예를 중심으로 문헌적 고찰과 함께 보고한다. Fiberoptic bronchoscope was utilized in which the conventional methods of endotracheal intubation were difficult or impossible. Endotracheal intubations were carried out easily, safely and rapidly by the fiberoptic bronchoscope or laryngoscope. Two cases, one was the patient with scar contracture of neck by severe third degree burn and the other was with the fracture - dislocation of first and second cervical spines, were presented.

광파이버 변위 센서를 적용한 자기베어링 정적 부상 제어 연구

강종규,신우철,홍준희 한국공작기계학회 2003 한국공작기계학회 추계학술대회논문집 Vol.2003 No.-

Five expensive sensors are necessary to control a magnetic bearing system. The sensor price rate of magnetic bearing system is high. So it is necessary that cheap and good sensor is developed. The optical fiber displacement sensor is adaptive to satisfy this condition. We can design magnetically suspended spindle based on static characteristic of optical fiber displacement sensor developed. The controller can be designed by decoupled feedback PD. Therefore, it is simpler than any other controller comparatively.

Plabo 발효원액(35종 야채)의 임상시험 결과

신우진,강락원,최병태,박동일 동의대학교 한의학연구소 2002 동의한의연구 Vol.6 No.-

1. Backgroud and Purpose I intented to be helpful to treat adult disease through a clinical study of effect of Palbo fermentation bulk. 2. Methods I studied 40 women of adipositas during 3 months from August. 2002 to July. November 2002. and then I analyzed level of examination after administration of Palbo fermentation bulk. 3. Results and Conclusion Palbo fermentation bulk was administered to 40 women of adipositas for 3 months. The results level of cholesterol, triglyceride and HDL-C significantly decreased after administration of Palbo fermentation bulk. And the results level of fat capacity, fat ratio and adipogenic digree significantly decreased after administratiom of Palbo fermentation bulk

Pilot 규모 회분식 PU 중합반응기의 온도 및 점도제어

우기수,강신춘 한양대학교 에너지·환경기술연구소 1998 에너지·環境技術論文集 Vol.4 No.-

실험실 규모의 합성 자료와 결과, 관련정보를 기초로 하여 폴리우레탄 합성이 가능한 50 liter 규모의 Pilot 회분식 중합 반응기를 제작하고 반응기의 온도와 점도를 유지하고자MRAC(model-reference adaptive control)과 순차적 제어를 도입하였다. 여러 가지 외란의 영향에도 불구하고 반응기의 온도와 점도의 제어는 만족할 만한 결과가 얻어졌지만 최종 분자량은 공업용 시약의 사용으로 인하여 실험실 규모의 합성결과에 미치지 못하는 결과를 얻었다. A batch polymerization reactor of pilot scale for polyurethane manufacture has been built to scale-up the preparation procedure obtained from the laboratory experiments. We could successfully maintain the regular operating conditions by applying the model reference adaptive control(MRAC), integrated anti-windup algorithm and sequencial control. We obtained satisfactory results in controlling the temperature and viscosity of the reaction mixture to maintain regular operating condition, and the trend of the reaction was similer to the results of lab. scale experiment which proved the superiority of adaptive control.