|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Study of ozone “weekend effect” in Shanghai显示文摘Analysis of observed ozone data in 2006 from five monitoring sites (Xujiahui, Chongming, Baoshan, Pudong, Jinshan) in Shanghai reveals that ozone (O_3) concentrations in Xujiahui are higher at week-ends than those on weekdays, despite the fact that emissions of ozone precursor substances, such as oxides of nitrogen (NOx), carbon monoxide (CO) and volatile organic compounds (VOCs) are lower at weekends than those on weekdays. The possible chemical cause of ozone 'weekend effect' is that NO_2/NO ratio increases at weekends by 25.61% compared with those on weekdays. In addition, because of an average 12.13% reduction in NOx (NO + NO_2) in the early morning (05:00-09:00) at weekends compared with that on weekdays, the ozone inhibition period ends 0.5 h earlier at weekends resulting in the longer duration of ozone accumulation and the higher ozone production rate. The rate of ozone production is a function of VOCs and NOx in the atmosphere. VOCs/NOx ratio in Xujiahui is 4.55 at weekends, and 4.37 on weekdays, belonging to the 'NOx-limited'. The increasing VOCs/NOx ratio at weekends leads to ozone enhancement from 73 ppbv to 80 ppbv, which are consistent with ozone 'weekend effect' in Xujiahui. Furthermore, combining with MICAPS cloud amount data, the fact that ozone 'weekend effect' in Xujiahui weakens gradually along with the increasing of cloud amount indicates that ozone photochemical production leads to ozone 'weekend effect' in Xujiahui of Shanghai. | TANG WenYuan1↑, ZHAO ChunSheng1, GENG FuHai1,2, PENG Li2, ZHOU GuangQiang2, GAO Wei2, XU JianMing2 & TIE XueXi2,3 1 Department of Atmospheric Science, School of Physics, Peking University, Beijing 100871, China 2 Atmospheric Chemistry Laboratory of Shanghai Meteorological Bureau, Shanghai 200030, China 3 Atmospheric Chemistry Division, NCAR, Boulder CO 80301, USA | 2008 | Science China Earth Sciences2008，51，9： | 23 |
| 2 | Study of Serum Metabonomics and Formula-Pattern Correspondence in Coronary Heart Disease Patients Diagnosed as Phlegm or Blood Stasis Pattern Based on Ultra Performance Liquid Chromatography Mass Spectrometry显示文摘Objectives: To study the characteristics of serum metabonomics in coronary heart disease(CHD) patients diagnosed as phlegm or blood stasis pattern and explore effects of formula-pattern correspondence treatment. Methods: A total of 102 stable CHD patients were enrolled and divided into phlegm group(P group, n=52) and blood stasis group(BS group, n=50) according to pattern identification. Gualou Xiebai Banxia Decoction(瓜蒌薤白半夏汤, GXBD) and Xuefu Zhuyu Decoction(血府逐瘀汤, XZD) were used as drug interventions. Relevant indicators of metabonomics were observed by ultra performance liquid chromatography mass spectrometry(UPLC-MS) and pattern recognition. Results: Levels of amino acids and phosphatidylethanolamine(PE) in the CHD group were much higher than those in healthy control group, while the levels of unsaturated fatty acids, sphingosine, Lyso, phosphatidylcholine(PC) were significantly lower(P<0.01). Most of the differential metabolites between the CHD and the healthy groups were also common metabolites of phlegm and blood stasis. 7(Z), 10(Z)-hexadecadienoic acid and DPA were decreased in the P group and increased in the BS group. According to the quantity of retraced metabolites, improvement in metabonomics by formula-pattern correspondence was superior to that without correspondence in the BS group. Based on the varieties of metabolites, GXBD could improve the levels of docosapentaenoic acid(DPA), sphingomyelin(SM)(d34:1), and L-Lactic acid and XZD could ameliorate the levels of sphingosine and Vit E in the P group. In the BS group, GXBD could improve vitamin E level and XZD could make improvements in the levels of octadecanoic acid, phosphoglycerol, and SM(d34:1). Conclusions: Phlegm and blood stasis in CHD patients present specific differential metabolites, and share common metabolites. Remarkable differences have been displayed in pathological properties and severity of phlegm and blood stasis. Patients with phlegm are more likely to have lipid metabolism disorders. However, in patients with blood stasis, problems mainly lie in glucose, protein and fat metabolism and the injury of vascular cell membrane is relatively severe. The metabolic disorder is more complicated in blood stasis pattern than that in phlegm pattern. Compared with non-correspondence, improvement of differential metabolites is more comprehensive and targeted in formulapattern correspondence with a better effect. | LU Xiao-yan XU Hao ZHAO Tie LI Geng | 2018 | Chinese Journal of Integrative Medicine2018，24，12： | 11 |
| 3 | Numerical Filling Simulation of Injection Molding Using Three-Dimensional Model显示文摘Most injection molded parts are three-dimensional, with complex geometrical configurations and thick/thin wall sections. A 3D simulation model will predict more accurately the filling process than a 2.5D model. This paper gives a mathematical model and numeric method based on 3D model, in which an equal-order velocity-pressure interpolation method is employed successfully. The relation between velocity and pressure is obtained from the discretized momentum equations in order to derive the pressure equation. A 3D control volume scheme is employed to track the flow front. Th e validity of the model has been tested through the analysis of the flow in cavity. | Geng Tie Li Dequn Zhou Huamin State Key Lab.of Mould & Die Technology, HuaZhong University of Science and Technology, Wuhan 430074,China | 2003 | Computer Aided Drafting,Design and Manufacturing2003，13，1： | 2 |
| 4 | Characteristics and source apportionment of VOCs measured in Shanghai, China显示文摘 | Changjie Cai Fuhai Geng Xuexi Tie Qiong Yu Junlin An | 2010 | Atmospheric Environment2010，，38： | 2 |
| 5 | Megacity impacts on regional ozone formation: observations and WRF-Chem modeling for the MIRAGE-Shanghai field campaign显示文摘 | X. Tie F. Geng A. Guenther J. Cao J. Greenberg R. Zhang E. Apel G. Li A. Weinheimer J. Chen C. Cai | 2013 | Atmospheric Chemistry and Physics2013，，11： | 2 |
| 6 | Kinetics of hexavalent chromium removal from water by ehitosan-Fe nanopartieles显示文摘 | Geng Bing Jin Zhaohui Li Tie]ong | 2009 | Chemosphere2009，75，6： | 1 |
| 7 | Characteristics and source apportionment of VOCs measured in Shanghai, China显示文摘 | Changjie Cai Fuhai Geng Xuexi Tie Qiong Yu Junlin An | 2010 | Atmospheric Environment2010，，38： | 1 |
| 8 | Characteristics and source apportionment of VOCs measured in Shanghai, China显示文摘 | Changjie Cai Fuhai Geng Xuexi Tie Qiong Yu Junlin An | 2010 | Atmospheric Environment2010，，38： | 1 |
| 9 | Characterizations of ozone, NOx and VOCs measured in Shanghai, China显示文摘 | GENG F TIE X X XU J M | 2008 | Atmospheric Environment2008，42，29： | 1 |
| 10 | Characterizations of ozone, NOx, and VOCs Measured in Shanghai, China显示文摘 | Geng F H Tie X X Xu J M | 2008 | Atmospheric Environment2008，42，： | 1 |
| 11 | Effect of isoprene emissions from major forests on ozone formation in the city of Shanghai, China显示文摘 | Geng F Tie X Guenther A | 2011 | Atmospheric Chemistry and Physics2011，11，10： | 1 |
| 12 | Aircraft measurements of O3, NOx, CO, VOCs, and SO2 in the Yangtze River Delta region显示文摘 | Geng F H Zhang Q Tie X X | 2009 | Atmospheric Environment2009，43，： | 1 |
| 13 | Characterizations of ozone, NOx, and VOCs measured in Shanghai, China 显示文摘 | Geng F H Tie X X | 2008 | Atmospheric Environment2008，42，29： | 1 |
| 14 | Characterizations of ozone, NOx, and VOCs measured in Shanghai, China显示文摘 | Geng F H Tie X X Xu J M | 2008 | Atmospheric Environ- ment2008，42，： | 1 |
| 15 | Characterizations of ozone,NOx, and VOCs measured in Shanghai, China 显示文摘 | GENG Fuhai TIE XueXi XU Jianmin | 2008 | Atmos Environ2008，42，29： | 1 |
| 16 | Aircraft measurements of O 3 , NO x , CO, VOCs, and SO 2 in the Yangtze River Delta region显示文摘 | Fuhai Geng Qiang Zhang Xuexi Tie Mengyu Huang Xincheng Ma Zhaoze Deng Qiong Yu Jiannong Quan Chunsheng Zhao | 2008 | Atmospheric Environment2008，，3： | 1 |
| 17 | Analysis of VOC emissions using PCA/APCS receptor model at city of Shanghai, China显示文摘 | Geng F H Cai C J Tie X X | 2009 | Journal of Atmospheric Chemistry2009，62，3： | 1 |
| 18 | Characterizations of ozone, NOx, and VOCs measured in Shanghai, China显示文摘 | Geng F H Tie X X XVJ M | 2008 | Atmospheric Environment2008，42，29： | 1 |
| 19 | Characterizations of ozone, NOx and VOCs measured in Shanghai, China显示文摘 | GENG F TIE X X XU J M | 2008 | Atmospheric Environment2008，42，29： | 1 |
| 20 | Characterizations of ozone, NOx and VOCs measured in Shanghai, China 显示文摘 | Geng F Tie X X Xu J M | 2008 | Atmospheric Environment2008，42，29： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员