http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 김장영 (검색결과 191 건)
- 무료
- 기관 내 무료
- 유료
-
-
김장영,Kim, Jangyoung 한국정보통신학회 2017 한국정보통신학회논문지 Vol.21 No.8
전기자동차 사업은 수도권에 발생하는 미세먼지의 30%를 감소시킬 수 있는 중요한 사업이고, 인체 위해도가 높은 자동차 배출가스를 내연기관에서 친환경 전기자동차로 대체하여 대기오염 문제를 획기적으로 해결할 수 있다. 이러한 전기자동차 사업의 핵심인 충전인프라 구축과 관련하여 서울시 내의 전기자동차 충전소 최적의 위치를 선정하고자 한다. T-Map 네비게이션 사용자 데이터 (위도, 경도, 위치) 분포와 서울시 교통정책과의 교통량 통계를 이용하였고, 최적의 위치에 전기자동차 충전소를 배치하고, 효율을 높이는 것에 본 논문의 목적이 있다. 본 논문에서 제안한 알고리즘은 두 가지 충전소 위치 선정 방식을 포함한다. 첫 번째는 교통량 및 권역을 이용한 방식이고, 두 번째는 T-Map 데이터 분포를 이용한 방식이다. 실제 충전소 위치 선정 시 두 가지 방식을 모두 고려하여 선정하게 된다. The electric vehicle business is important because it can reduce 30% of the fine dust generated in the metropolitan area and it can solve the air pollution problem by replacing automobile exhaust gas from an internal combustion engine with eco-friendly electric cars. For the construction of the electric charging station infrastructure, which is the core part of the electric car business, we focus to select the optimal location of the electric car charging station in Seoul. The goal of this paper is to utilize and analyze the traffic statistics of T-Map navigation users data and Seoul Metropolitan Transportation Policy Department to deploy the electric cars charging station with optimal location to increase the efficiency. In this paper, the proposed algorithm is composed of two parts of electric charging station selection. First, we analyze real traffic statistics and area. Second, we utilize T-Map navigation data distribution. To select optimal electric charging station location, we apply these two algorithms.
-
김장영,이준원,윤영진,안민수,안성균,유병수,이승환,윤정한,최경훈 대한심장학회 2012 Korean Circulation Journal Vol.42 No.9
Background and Objectives: The objective of this study was to determine if urinary levels of 8-iso-prostaglandin F2α (8-iso-PGF2α) and 8-hydroxydeoxyguanine (8-OHdG) could be used as markers of the oxidative stress in significant coronary artery disease (CAD). Subjects and Methods: We conducted a case-control study in 104 subjects assessed by coronary angiography with the following diagno-ses: 35 consecutive cases of significant CAD and 69 cases of non-CAD with stable angina. We compared the urinary levels of 8-iso-PGF 2 αand 8-OHdG, as measured by immunoassay between the 2 groups. Results: History of hypertension was significantly higher and high density lipoprotein-cholesterol level significantly lower in the CAD group compared with those in the non-CAD group. Median levels of 8-iso-PGF2α were significantly higher in the CAD group compared with the non-CAD group (9.2 vs. 6.0 ng/mg, p=0.001). There were no significant differences in 8-OHdG values between the 2 groups. The odds ratio of 8-iso-PGF2α for CAD in the highest tertile compared with that in the lowest tertile was 7.39 (95% confidence interval; 1.71-31.91). There was no significant difference in median values of 8-iso-PGF2 α between single- and multi-vessel CAD. Conclusion: Urinary 8-iso-PGF 2α was independently associated with significant CAD in this case-control study. Background and Objectives: The objective of this study was to determine if urinary levels of 8-iso-prostaglandin F2α (8-iso-PGF2α) and 8-hydroxydeoxyguanine (8-OHdG) could be used as markers of the oxidative stress in significant coronary artery disease (CAD). Subjects and Methods: We conducted a case-control study in 104 subjects assessed by coronary angiography with the following diagno-ses: 35 consecutive cases of significant CAD and 69 cases of non-CAD with stable angina. We compared the urinary levels of 8-iso-PGF 2 αand 8-OHdG, as measured by immunoassay between the 2 groups. Results: History of hypertension was significantly higher and high density lipoprotein-cholesterol level significantly lower in the CAD group compared with those in the non-CAD group. Median levels of 8-iso-PGF2α were significantly higher in the CAD group compared with the non-CAD group (9.2 vs. 6.0 ng/mg, p=0.001). There were no significant differences in 8-OHdG values between the 2 groups. The odds ratio of 8-iso-PGF2α for CAD in the highest tertile compared with that in the lowest tertile was 7.39 (95% confidence interval; 1.71-31.91). There was no significant difference in median values of 8-iso-PGF2 α between single- and multi-vessel CAD. Conclusion: Urinary 8-iso-PGF 2α was independently associated with significant CAD in this case-control study.
-
Aspirin and Clopidogrel Resistance in Drug Eluting Stent Era
김장영,윤정한 대한심장학회 2007 Korean Circulation Journal Vol.37 No.4
Platelets play a central role in the pathogenesis of atherothrombosis. Dual antiplatelet therapy with clopidogrel plusaspirin has been shown to reduce ischemic events in patients undergoing percutaneous coronary intervention(PCI) and stenting. Although dual antiplatelet therapy reduces the risk of cardiovascular episodes after PCIs, a substantialnumber of incidents continue to occur. Many cardiologists have focused their attention to the relationshipsbetween the interindividual variability of platelet inhibition after aspirin or clopidogrel administration and majorcardiac adverse events such as stent thrombosis. Recent evidence has suggested that “aspirin or clopidogrel resistance”is associated with poor health outcomes (recurrent atherothrombotic events and stent thrombosis) after drugeluting stent (DES) implantation. However, the current clinical guidelines do not support routine screenings for antiplateletresistance because standardized objective screening has not yet been established. Thus, this review describesthe antiplatelet therapy used in PCI and it outlines the mechanism, laboratory tests, clinical impact and treatmentoptions for aspirin and clopidogrel resistance in the DES era. (Korean Circulation J 2007;37:135-147)
-
-
-
-
-
하수처리장 부하 저감을 위한 음식물쓰레기 탈리액 내 액상 미생물 제제 적용 연구
김장영,신동철,양희성,정원식 한국도시환경학회 2022 한국도시환경학회지 Vol.22 No.4
In this study, in order to reduce the load of sewage treatment plants, the load reduction evaluation is conducted by reacting food waste leachate with liquid microbial agents. The standard food sample and water were mixed, crushed, sieve-filtrated at 0.3mm mesh to produce a desorption solution, and the liquid microbial agents eco-A, eco-C, eco-D, and eco-E were reacted for 6 hours, respectively, to analyze TCODcr and SCODcr. As a result, TCODcr and SCODcr of the desorbed solution reacted with eco-C were the highest, but the efficiency was not significant compared to the control group, and accordingly, additional experiments were performed by adding returned activated sludge from the sewage treatment plant. The experiment to add returned activated sludge showed that eco-C had the highest reduction efficiency, the Shinella strain had the highest classification configuration in eco-C, and high reactivity with returned activated sludge. Therefore, it is judged that the load of the sewage treatment plant due to food waste leachate can be reduced by mixing the liquid microbial agent eco-C and the returned activated sludge directly into the sewage pipe, but further research is needed to achieve commercialization level. 본 연구에서는 하수처리장의 부하 저감을 위해 음식물쓰레기 침출수와 액상 미생물 제제를 반응시켜 부하 저감 평가 를 하고자 한다 . 음식물 찌꺼기 표준시료와 물을 혼합하여 분쇄 후 0.3mm mesh에 체거름하여 탈리액을 생성하였으며 , 여기에 액상 미생물 제제인 eco-A, eco-C, eco-D, eco-E를 각각 6시간 동안 반응시켜 TCODcr과 SCODcr을 분석하였다 . 그 결과 eco-C와 반응한 탈리액의 TCODcr, SCODcr의 감소율이 가장 높았으나 대조군과 비교 시 큰 효율이 나타나지 않 았으며 , 이에 따라 하수처리장의 반송슬러지를 첨가하여 추가실험을 수행하였다 . 반송슬러지를 첨가 실험을 수행 결과 마 찬가지로 eco-C의 저감 효율이 가장 높았으며 , eco-C에는 Shinella 균주가 가장 높은 분류 구성을 나타내고 있으며 , 반송 슬러지와 높은 반응성을 나타난 것으로 판단된다 . 따라서 , 액상 미생물 제제 eco-C와 반송슬러지를 혼합시켜 하수관에 직 투입하면 음식물쓰레기 침출수로 인한 하수처리장의 부하 저감이 가능할 것으로 판단되나 , 상용화 수준으로 되기 위해서 는 추가적인 연구가 필요하다 .
-
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
