http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
난소절제후 Estrogen을 투여한 흰쥐 대동맥에서 Protein Kinase C-α와 Fas 발현의 변화
이왕수,이상엽,안지현,송영빈,김학진,이광재,유재격,김상욱,김태호,김치정,류왕성 중앙대학교 의과대학 의과학연구소 2001 中央醫大誌 Vol.26 No.3
Estrogen is believed to decrease coronary artery disease. Protein kinase C-α(PKCα)appear to be important in signal conduction pathways. Estrogen treatment increases catalytic activity of PKCα,and activation of PKCαcan modulate estrogen receptor levels and responsiveness. And it was reported that activation of PKC can protect cells from apoptosis induced by Fas ligation. But the beneficial effect of estrogen on PKCαwas not clearly demonstrated. The objective of this study was to evaluate the role of PKCαafter ovariectomy and estrogen therapy in rat aorta. The results were summarized as below: 1. The significant pathological changes were not observed in the rat aorta irrelevant to ovariectomy and estrogen therapy. 2. The expression of Fas was decreased in the aorta of estrogen-treated rats than that of ovariectomized rats without estrogen therapy. 3. Increased expression of PKCαwas more marked in the aprta of estrogen-treated rats than that of ovariectomized rat without estrogen therapy. In conclusion,PKCαmay be important in signal conduation pathway on the effect of estrogen. Activation of PKCαby estrogen reduced Fas expression, suggesting that PKCαactivation may play a role in protection against atherasclerosis. Further studies are needed to elucidate the role of PKCαafter estrogen therapy.
중연계 무선네트워크 환경의 도로유지관리계측 시스템 개발에 관한 연구
이상우,송종결,남왕현,김학수 강원대학교 산업기술연구소 2006 産業技術硏究 Vol.26 No.B
Wireless Sensor Networks provide a new paradigm for sensing and disseminating information from various environments, with the potential to serve many and diverse applications. Recent advancement in wireless communications and electronics has enabled the development of low-cost sensor networks. The sensor networks can be used for various application areas. For different application areas, there are different technical issues that researchers are currently resolving. The current state of the art of sensor networks is captured in this article, where solutions are discussed under their related protocol stack layer sections. This article also points out the open research issues and intends to spark new interests and developments in this field. In order to evaluate the application of field monitoring system, lab tests field and FEM analysis are conducted. Therefore the accuracy of RFID wireless sensor data is verified.
대전지역 남·녀 대학생의 체구성성분과 식습관, 영양섭취량에 대한 비교 연구
왕수경,이나영 대전대학교 생활과학연구소 2002 생활과학연구 Vol.8 No.-
This study was an investigation of nutrient intake, food habit and body composition of college students in Daejeon. A 21 male students and 20 female students healthy college students living in Daejeon were selected for the study. Weight, height were measured of on all participants and Body composition were measured by bioirnpedence. The 24-hour recall test and food habits were examined throught questionnaires. The average height, weight and BMI were 175.80±4.29㎝, 71.59±16.22kg, 23.10±4.71kg/㎡ for the male, 161.20±5.51㎝, 56.25 ±7.61㎏, 21.62±2.22㎏/㎡ for the female. The everage body compositions were intracellular fluid(27.31±4.04), extracellular fluid(13.16±2.02), total body fat(13.26±8.69㎏), body fat ratio(17.23±7.00%) for the male and intracellular(18.53±2.15), extracellular fluid(8.81±1.01), total body fat(16.68±4.17㎏), body fat ratio(29.28±4.18%) for the female. Intracellular fluid(ICF) and extracellular fluid(ECF) of male students were significantly heigher than female. The mean score of food habits were 62.10±4.12 for the male, 64.30±7.46 for the female, and not significant difference between male and female(p<0.05). The everage intakes of energy, vit. B₁, B₂, niacine, folic acid, Ca and Zn were below the RDA in male and the everagy intake of energy, vitamin A, B_z, C, folic acid, Ca, Fe and Zn were below th RDA in female. Among energy, calrorie nutrients, food habits, BFR of correlation were significantly correlation energy(p<0.05) and carbohydrate(p<0.01), and significantly correlation between energy and nutrients(p<0.05).
중연계 무선네트워크 환경의 도로유지관리계측 시스템 개발에 관한 연구
이상우,송종걸,남왕현,김학수 강원대학교 산업기술연구소 2006 産業技術硏究 Vol.26 No.A
Wireless Sensor Networks provide a new paradigm for sensing and disseminating information from various environments, with the potential to serve many and diverse applications. Recent advancement in wireless communications and electronics has enabled the development of low-cost sensor networks. The sensor networks can be used for various application areas. For different application areas, there are different technical issues that researchers are currently resolving. The current state of the art of sensor networks is captured in this article, where solutions are discussed under their related protocol stack layer sections. This article also points out the open research issues and intends to spark new interests and developments in this field. In order to evaluate the application of field monitoring system, lab tests, field test and FEM analysis are conducted. Therefore the accuracy of RFID wireless sensor data is verified.
DSC법에 대한 제지슬럿지와 스티렌 공중합체의 열분해속도
설수덕,왕석주,이동호 동아대학교 환경문제연구소 1997 硏究報告 Vol.20 No.2
The kinetics of thermal degradation on blend of the paper sludge and waste styrene copolymer, such as high density polystyrene(HDPA), low density polystyrene (LDPS), poly(styrene-co-acrylonitrile)(SAN), poly(acrylonitrile-butadiene-styrene)(ABS) were anaryzed using the thermal analysis, pyrolysis gas chromatography with the stream of nitrogen gas(30ml/min) and infra-red spectroscopy at isothermal temperature(200, 250, 300, 350℃). 1. The values of apparent activation energy evaluated by DTA method was consistent with eath other very well. 2. The maximum value of heat of decomposition evaluated by DSC method was 80% ABS and 20% paper sludge(11,120cal/g) 3. The thermal degradation of PS/sludge was considered to be carried out by the main chain scission and ABS/sludge, SAN/sludge were to be carried out by the randim chain scission over 300℃. The thermogravimetric trace curve agreed with the theoretical equation.GC
운동성 산화 스트레스와 항산화비타민의 보충이 말초단핵세포의 NF-kB 활성에 미치는 영향
진영수,박건구,박준영,김미정,이왕록,김혜영,이한준,박은경 대한스포츠의학회 2000 대한스포츠의학회지 Vol.18 No.2
Reactive oxygen species(ROS) are implicated in the pathogenesis of a wide variety of human diseases. Numerous studies indicate that ROS may serve as common intracellular molecules that contribute to the process of nuclear factor(NF)κB activation in response to a diverse stimuli. In our laboratory, we have demonstrated tat antioxidants could reverse the decline of immune function caused by exercise-induced ROS. Furthermore, it in necessary to understand a mechanism underlying ROS-dependent disorder in biological system. Recent studies have been shown that several gene expression were regulated by oxidants, antioxidants and other determinants of the intracellular reduction-oxidation(redox) state. In this process, NF-κB have been shown to play a important role. The purpose of the present investigation was to evaluate the effect of exercise-induced oxidative stress and antioxidnt supplementation on NF-κB activation in peripheral mononuclear cells. Forty male SD rats(4 weeks old) were randomly divided into noraml diet group and antioxidants(ATO) supplement group, and then ATO groups were treated with antioxidants(VE: 2001U/kg, VC: 50mg/rat, β-carotene: 300mg/kg, vitamin B6: 250㎍/100g, selenomethionine: 0.1mg/kg) for 16 weeks. After 16 weeks breeding at each condition, each group divided into two groups: Control group(CR) fed generally, Exercise group(CE) fed generally and followed by acute exercise 16 weeks later. Antioxidant Antioxidants and Exercise group(AE) fed with antioxidants and followed by acute exercise. The activation of NF-κB binding activity was increased after exhaustive exercise bout in both group. In addition, pretreatment of ATO group with the antioxidants mixture lead to the inhibition of NF-κB binding activity. This results suggest that NF-κB activation should be further studies in response to a variety of exercise.