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    题名 作者 年代 出处 被引量
1Fuzzy controllers based on some fuzzy implication operators and their response functions显示文摘The fuzzy controllers constructed by 23 fuzzy implication operators based on CRI algorithm and their response functions are discussed. The conclusions show that the fuzzy controllers constructed by 9 fuzzy implication operators are universal approximators to continuous functions and can be used in practical fuzzy control systems. And these 9 fuzzy implication operators except for Einstein operator intersection are all the adjoint pairs of some fuzzy implication operators. Besides, there are 3 other fuzzy controllers formed by fuzzy implication operators being regarded approximately as fitted functions.LIHongxing YOUFei PENGJiayin 2004Progress in Natural Science:Materials International2004,14,1:21
2Effects of feeding untreated, pasteurized and acidified waste milk and bunk tank milk on the performance, serum metabolic profiles, immunity, and intestinal development in Holstein calves显示文摘Background: The present experiment was performed to assess the effects of different sources of milk on the growth performance, serum metabolism, immunity, and intestinal development of calves. Eighty-four Holstein male neonatal calves were assigned to one of the following four treatment groups: those that received bunk tank milk(BTM), untreated waste milk(UWM), pasteurized waste milk(PWM), and acidified waste milk(AWM) for 21 d.Results: Calves in the BTM and AWM groups consumed more starter(P < 0.05) than those in the UWM group.Average daily gain in the UWM group was the highest(P < 0.05). Calves exhibited the highest(P < 0.05) serum total protein, albumin, total cholesterol, high density lipoprotein, triglycerides, growth hormone, immunoglobulin(Ig) A and Ig M concentrations in the UWM group, highest malondialdehyde and tumor necrosis factor-α in the PWM group(P < 0.05), and highest glutathione peroxidase and Ig G in the BTM group(P < 0.05). The jejunum and ileum of the calves in all treatments presented a slight inflammatory response. The jejunal inflammation scores were higher(P < 0.05) in the UWM and AWM groups than the BTM group; the ileal inflammation scores increased more(P < 0.05) in the AWM group than the BTM group. Jejunal immunohistochemical scores(IHS) were higher(P < 0.05) in the PWM and AWM groups than the BTM group. Compared to the other three groups, calves feeding on BTM had lower(P < 0.05) ileal IHS. Jejunal interleukin(IL)-1β, IL-8, and IL-10 mRNA expression in the UWM group was the highest(P < 0.05). Calves fed AWM increased(P < 0.05) mRNA expression of IL-8 and toll like receptor 4(TLR-4) in the jejunum and IL-8, IL-1β, IL-6, IL-8, and IL-10 in the mesenteric lymph nodes.Conclusions: Overall, bunk tank milk is the best choice for calf raising compared to waste milk. The efficiency of feeding pasteurized and acidified waste milk are comparable, and the acidification of waste milk is an acceptable labor-saving and diarrhea-preventing feed for young calves.Yang Zou Yajing Wang Youfei Deng Zhijun Cao Shengli Li Jiufeng Wang 2017Journal of Animal Science and Biotechnology2017,8,4:7
3ENVIRONMENTAL SUSTAINABILITY AND SCENARIOS OF URBANIZATION IN ARID AREA——A Case Study in Wuwei City of Gansu Province显示文摘Based on data of questionnaire and field survey and two developing models of Business As Usual (BAU) and the Intensive Urbanization (IU), this article, taking Wuwei City, a medium size city and typical oasis arid area in Gansu Province with very vulnerable and sensitive natural environment but long history of oasis economy, as an example, evaluated the sustainability of its environment and analyzed the scenarios of Wuwei’s household energy consumption, waste discharge in transportation industry, primary industry, secondary industry, tertiary industry, by the integration of the systematical dynamics model Stella and Polestar language to simulate the future development of the research area. The results showed that, first, the developing model of IU was propitious to Wuwei City named for oasis economy and vulnerable natural environment. The strategy of 'Intensive Urbanization' can change the structure of energy utilization, and improve the efficiency of energy utilization. Second, the proportion of domestic energy consumption will decrease with industrialization and economic development, while that of tertiary industry, secondary industry and transportation will gradually grow up according to strategy of 'Intensive Urbanization'. Third, the Wuwei City is facing a severe eco-environmental crisis under the conventional patterns of development and a better future under a sustainable urbanization scenario, in the next 10 to 20 years. The different developing trends were clarified and the relative countermeasures were put forward for the policy makers according to the driving forces.YOUFei LIYu DONGSuo-cheng 2005Chinese Geographical Science2005,15,2:4
4Impact of technology advances on China's CO_2 emission reduction显示文摘Global warming tends to be the major characteristics of the dramatic global climate change.To deal with these changes,the impact of reducing greenhouse gas(GHG) emission on Chinese future economic and social development has to be assessed.In this paper,a Regional Integrated model of Climate and the Economy(RICE),which is well known and accepted widely,has been used for Chinese economic assessment of climate change after introduction,assimilation and verification.Based on a sensitivity analysis of technical parameters in the RICE model and constrained targets proposed for energy saving and emissions reduction technological advance programs of China from 2000 to 2050,the economic impact of the programs is examined.The results indicate that when technology advances,Chinese CO2 emission,climate loss,and the growth rate of atmospheric CO2 concentration and temperature will all decrease.It is assumed that in 2010,the CO2 emission is 20% lower than in 2005,CO2 emission in 2050 would only double the level in 2000,the accumulative CO2 emission would be decreased by 12.4 GtC,and the atmospheric CO2 concentration and temperature in 2050 would reduce by 35 GtC and 0.04°C respectively from 2000 to 2050.The accumulative climate loss from 2000 to 2050 will drop down by 4.6 billion dollar,which only accounts for 6% of the global total benefits.However,the economic benefit the developed countries will obtain is 10 times that for China under such a technological advance scenario.The decrease of the CO2 emission control rate is 1% in cooperation policy while 4.6% in non-cooperation policy,which would relieve China's burden in the control of CO2 total emission and thereby benefit China in participation of the international cooperation for CO2 emission reduction.ZHENG YouFei LI HaiTao WU RongJun WANG LianXi 2010Chinese Science Bulletin2010,55,19:4
5Cloud-Base Distribution and Cirrus Properties Based on Micropulse Lidar Measurements at a Site in Southeastern China显示文摘The cloud fraction(CF) and cloud-base heights(CBHs), and cirrus properties, over a site in southeastern China from June 2008 to May 2009, are examined by a ground-based lidar. Results show that clouds occupied the sky 41% of the time.Significant seasonal variations in CF were found with a maximum/minimum during winter/summer and similar magnitudes of CF in spring and autumn. A distinct diurnal cycle in the overall mean CF was seen. Total, daytime, and nighttime annual mean CBHs were 3.05 ± 2.73 km, 2.46 ± 2.08 km, and 3.51 ± 3.07 km, respectively. The lowest/highest CBH occurred around noon/midnight. Cirrus clouds were present ~36.2% of the time at night with the percentage increased in summer and decreased in spring. Annual mean values for cirrus geometrical properties were 8.89 ± 1.65 km, 9.80 ± 1.70 km, 10.73 ± 1.86 km and 1.83 ± 0.91 km for the base, mid-cloud, top height, and the thickness, respectively. Seasonal variations in cirrus geometrical properties show a maximum/minimum in summer/winter for all cirrus geometrical parameters. The mean cirrus lidar ratio for all cirrus cases in our study was ~ 25 ± 17 sr, with a smooth seasonal trend. The cirrus optical depth ranged from 0.001 to 2.475, with a mean of 0.34 ± 0.33. Sub-visual, thin, and dense cirrus were observed in ~12%, 43%, and 45%of the cases, respectively. More frequent, thicker cirrus clouds occurred in summer than in any other season. The properties of cirrus cloud over the site are compared with other lidar-based retrievals of midlatitude cirrus cloud properties.Jianjun LIU Zhanqing LI ZHENG Youfei Maureen CRIBB 2015Advances in Atmospheric Sciences2015,32,7:2
6Uterine artery embolization chemotherapy cesarean section uterine scar pregnancy clinical observation显示文摘Yan Huang Youfei Li Rongkai Xie 2014Modem obstetrics and gynecology2014,,8:1
7Responses of winter wheat growth and production under sub-ambient UV-B irradiance显示文摘 Youfei zheng Wei Gao 2003Proceedings of SPIE2003,4896,:1
8Spatial and of the in Henan,China显示文摘ZHANG Xuefen ZHANG Youfei WANG Chunyi 201125 (2) : 249 -2592011,25,2:1
9Impacts of network constraints on electricity market equilibrium显示文摘LIU Youfei WU F F 2007IEEE Trans on Power Systems2007,22,1:1
10Generator bidding in oligopolistic electricity markets using optimal controh fundamentals and application显示文摘Liu Youfei Wu F F 2006IEEE Transaction on Power Systems2006,21,3:1
11Effect of roughness on wettability and floatability:Based on wetting film drainage between bubbles and solid surfaces显示文摘Wetting film thinning measurement was introduced to clarify the wettability and floatability of solid surfaces with varying roughness. The wettability was quantified using the contact angle measurement combined with the dynamic force microbalance test between solid surfaces and water droplets, while the floatability was investigated by the bubble-solid surface dynamic attachment observation and the induction time measurement. The results show that the water contact angles reduce(14.53°, 12.74°, and 6.71°)with the increase of glass surface roughness, while the water droplet-glass adhesion forces intensify(11.1, 19.1 and 19.2 μN) owing to the stable wetting film. The distortion of the contact surface and the Wenzel state are the causes. In contrast, the hydrophobized surfaces have the growing apparent contact angles(38.08°, 69.81°, and 81.01°), declining adhesion strength and shortening induction time(863, 352and 12 ms) along with the increasing surface roughness. The weak wettability and fine floatability on the rough hydrophobized surface is reflected in the fast wetting film drainage dynamics and three-phase contact formation, which may be attributed to the wetting film with short diameter on tiny rough nubs and the entrapped air in the grooves as a bridge between the bulk bubble and the solid surface.Ming Li Yaowen Xing Chunyun Zhu Qinshan Liu Zili Yang Rui Zhang Youfei Zhang Yangchao Xia Xiahui Gui 2022International Journal of Mining Science and Technology2022,32,6:1
12Impacts of suppliers' learning behavior on market equilibrium under repeated linear supply function bidding显示文摘Liu Youfei Ni Yixin Wu Fuli 2006IEE Proceedings on Generation Transmission and Distribution2006,153,1:1
13Existence and uniqueness of consistent conjectural variation equilibrium in electricity markets显示文摘Youfei Liu Y X Ni Felix F Wu 2007Electrical Power and Energy Systems2007,29,:1
14Generator bidding in oligopolistic electricity markets using optimal control: fundamentals and application显示文摘Liu Youfei Wu F F 2006IEEE Transactions on Power Systems2006,21,3:1
15Wetting mechanism transfer process of hydrophobic membrane gas absorbtion 显示文摘Lu Jiangang Zheng Youfei Cheng Mindong 2008J Membr Sci2008,308,:1
16Peroxisome proliferator-activated receptors(PPARs):Novel therapeutic targets in renal disease显示文摘Youfei G Matthew D 2001Kidney Int2001,60,:1
17Wetting mechanism in mass transfer process of hydrophobic membrane gas absorption显示文摘Lu Jiangang Zheng Youfei Cheng Mindong 2008Journal of Membrane Science2008,,308:1
18Effects of activators on mass transfer enhancement in a hol- low fiber contactor using activated alkanolamine solutions 显示文摘LU Jiangang ZHENG Youfei CHENG Mindong 2007J Membr Sci2007,289,1:1
19Environmental impacts and benefits of regional power gird interconnection for China 显示文摘Fahua Zhu Youfei Zheng Xulin Guo 2005Energy Policy2005,33,2005:1
20Synthesis of flowe-like CuO nanostructures as a sensitive sensor for catalysis显示文摘Teng Fei Yao Wenqing Zheng Youfei 2008Sensors and Actuators B:Chemical2008,134,:1
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