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10篇 您的检索式:作者名="FENG Qingfu"
    题名 作者 年代 出处 被引量
1Artificially triggered lightning and its characteristic discharge parameters in two severe thunderstorms显示文摘The lightning-induced-damages in the mid-latitude regions are usually caused during severe thunder-storms. But the discharge parameters of natural lightning are difficult to be measured. Five lightning flashes have been artificially triggered with the rocket-wire technique during the passage of two severe thunderstorms. The discharge current and close electric field of return stroke in artificially triggered lightning have been obtained in microsecond time resolution by using current measuring systems and electric field change sensors. The results show that the five triggered lightning flashes include 1 to 10 return strokes, and the average return stroke current is 11.9 kA with a maximum of 21.0 kA and a mini-mum of 6.6 kA, similar to the subsequent return strokes in natural lightning. The half peak width of the current waveform is 39 μs, which is much larger than the usual result. The peak current of stroke Ip (kA) and the neutralized charge Q(C) has a relationship of Ip = 18.5Q0.65. The radiation field of return stroke is 5.9 kV·m-1 and 0.39 kV·m-1 at 60 m and 550 m, respectively. The radiation field decreases as r -1.119 with increase of horizontal distance r from the discharge channel. Based on the well-accepted transmission line model, the speed of return stroke is estimated to be about 1.4×108 m·s-1, with a variation range of (1.1―1.6)×108 m·s-1. Because of the similarities of the triggered lightning and natural lightning, the results in this article can be used in the protection design of natural lightning.QIE XiuShu ZHANG QiLin ZHOU YunJun FENG GuiLi ZHANG TingLong YANG Jing KONG XiangZhen XIAO QingFu WU ShuJun 2007Science China Earth Sciences2007,50,8:16
2Matrix porosity calculation in volcanic and dolomite reservoirs and its application显示文摘矩阵孔计算断裂并且 vuggy 水库例如 volcanics 和捱过的白云石,是着急地需要在记载得好的评估解决的问题之一。在这篇论文,我们首先比较为从有矩阵孔公式的完整的直径流纹岩核心实验的孔计算的一个实验公式通常使用了。我们讨论实验公式的适用性在断裂并且 vuggy 水库,例如中介基本的 volcanics 和捱过的白云石。基于核心分析数据,我们的实验公式的计算的孔的错误分发和在这些水库的公式被给的另外的孔。统计错误分析显示我们的实验公式比另外的孔公式提供更高的精确。当孔在 1.5% 和 15% 之间时,声学的实验公式能不仅为酸的 volcanics 而且在折断的其它和 vuggy 水库被使用,例如中介基本的 volcanics 并且捱过白云石。而且,公式能在孔计算上减少地上凿穿增大和岩石改变的效果。Li Ning Wu Hongliang Feng Qingfu Wang Kewen Shi Yujiang Li Qingfeng Luo Xinping 2009Applied Geophysics2009,6,3:6
3Lithium bis(oxalate)borate crosslinked polymer electrolytes for high-performance lithium batteries显示文摘Solid electrolytes play a vital role in solid-state Li secondary batteries,which are promising high-energy storage devices for new-generation electric vehicles.Nevertheless,obtaining a suitable solid electrolyte by a simple and residue-free preparation process,resulting in a stable interface between electrolyte and electrode,is still a great challenge for practical applications.Herein,we report a self-crosslinked polymer electrolyte(SCPE)for high-performance lithium batteries,prepared by a one-step method based on 3-methoxysilyl-terminated polypropylene glycol(SPPG,a liquid oligomer).It is worth noting that lithium bis(oxalate)borate(Li BOB)can react with SPPG to form a crosslinked structure via a curing reaction.This self-formed polymer electrolyte exhibits excellent properties,including high roomtemperature ionic conductivity(2.6×10^(-4) S cm^(-1)),wide electrochemical window(4.7 V),and high Li ion transference number(0.65).The excellent cycling stability(500 cycles,83%)further highlights the improved interfacial stability after the in situ formation of SCPE on the electrode surface.Moreover,this self-formation strategy enhances the safety of the battery under mechanical deformation.Therefore,the present self-crosslinked polymer electrolyte shows great potential for applications in high-performance lithium batteries.Xiao Wang Jujie Sun Changhao Feng Xiujuan Wang Minghan Xu Jingjiang Sun Ning Zhang Jun Ma Qingfu Wang Chengzhong Zong Guanglei Cui 2021Journal of Energy Chemistry2021,30,4:2
4Application of the triple porosity model in well-log effectiveness estimation of the carbonate reservoir in Tarim Oilfield 显示文摘Liu Ruilin Li Ning Feng Qingfu 2009Journal of Petroleum Science Engineering2009,68,12:1
5Role of Extracellular Signal-Regulated Kinase, p38 Kinase, and Activator Protein-1 in Transforming Growth Factor-β1–Induced Alpha Smooth Muscle Actin Expression in Human Fetal Lung Fibroblasts In Vitro显示文摘Yongbin Hu Jinwu Peng Deyun Feng Ling Chu Xiang Li Zhongyuan Jin Zhi Lin Qingfu Zeng 2006Lung2006,,1:1
6Role of Extracellular Signal-Regulated Kinase, p38 Kinase, and Activator Protein-1 in Transforming Growth Factor-β1–Induced Alpha Smooth Muscle Actin Expression in Human Fetal Lung Fibroblasts In Vitro显示文摘Yongbin Hu Jinwu Peng Deyun Feng Ling Chu Xiang Li Zhongyuan Jin Zhi Lin Qingfu Zeng 2006Lung2006,,1:1
7ADS Venus-Ⅱ Critical Extrapolation Experiment显示文摘Venus-ⅡADS zero power experiment assembly which is based on the original heavy water zero power reactor has been designed and built in two reactor core structure—A water core and a solid lead core,and the debugging has been completed by the end of December 2016.Then the two core both reached to critical respectively for the first time,and a series of reactorZHU Qingfu ZHOU Qi ZHANG Wei LIANG Shuhong LUO Huangda LIU Yang LIU Donghai LIU Feng 2017Annual Report of China Institute of Atomic Energy2017,,1:0
8Affecting factors and application of the stable hydrogen isotopes of alkane gases显示文摘To study the composition, affecting factors of the stable hydrogen isotopes of alkane gases and their application to identification of the natural gas origin and maturities, the chemical and isotopic compositions of 118 gas samples of Carboniferous- Permian in the Ordos Basin, and of Triassic in the Sichuan Basin, combined with 68 gas samples from the Sinian and Cambrian reservoirs in the Sichuan Basin, and Ordovician and Siliurian reservoirs of Tarim Basin, are analyzed comprehensively. The following conclusions are obtained:(1) Natural gases in the study area and strata of the Ordos and Sichuan basins are dominated by alkane gases, and the dryness coefficients and maturities of the Carboniferous-Permian gases in the Ordos Basin are higher than the gases in the Triassic Xujiahe Formation of the Sichuan Basin, while the hydrogen isotopes of the latter ones are much enriched in 2H than the former.(2) The δ2HCH4-C1/C2+3 genetic identification diagram of natural gas was drawn, and the diagrams of hydrogen isotopic differences between the heavy alkane gases and methane vs. hydrogen isotopes of alkane gases can also be used in natural gas genetic identification.(3) The δ2HCH4-Ro formulas of coal-formed gas in different areas of the two basins are given, and the δ2HC2H6-δ2HCH4 is a new index for maturity, and the (δ2HC2H6-δ2HCH4)-Ro formula of the coal-formed gas can be used to calculate the maturity of the natural gas.(4) The stable hydrogen isotopes of alkane gases are affected by parent materials in source rocks, maturity, mixing and the aqueous medium conditions, among which the aqueous paleo-salinity is the key factor. To sum up, the hydrogen isotopes of alkane gases are affected by multiple factors, and they are significant to the identification of the origin, and maturity of natural gas, and the water environment during the deposition of source rocks.HUANG Shipeng DUAN Shufu WANG Zecheng JIANG Qingchun JIANG Hua SU Wang Feng Qingfu HUANG Tongfei YUAN Miao REN Mengyi CHEN Xiaoyue 2019Petroleum Exploration and Development2019,46,3:0
9Type and distribution of Mid-Permian Maokou Formation karst reservoirs in southern Sichuan Basin,SW China显示文摘Based on the analysis of the responses of conventional logs such as natural gamma(GR), density(DEN), acoustic interval transit time(AC), compensated neutron(CNL), dual lateral resistivity(Rlld, Rlls), and caliper log(CAL), combined with drilling data,cores, thin section and productivity of 65 wells, the reservoirs in the Mid-Permian Maokou Formation of southern Sichuan Basin were divided into four types, fractured-vuggy, pore-vuggy, fractured and fractured-cavity. The main reservoirs in high productivity wells are fractured-vuggy and pore-vuggy. The reservoirs of Maokou Formation are generally thin, and can be divided into the upper reservoir segment(layer a of the second member to the third member of Maokou Formation, P_2 m^2 a-P_2 m^3) and the lower segment(layer b of the second member of Maokou Formation, P_2 m^2 b). The two reservoir segments are mainly controlled by two grain beaches during the sedimentation of P_2 m^2 a-P_2 m^3 and P_2 m^2 b, the vertical zonation of karst, and the fractures. The upper reservoir segment is generally better than the lower one in development degree and single well productivity, and is much thicker than the lower one. It is thicker in the Yibin-Zigong-Weiyuan-Dazu area, the southwestern area of Chongqing and the southeastern area of Luzhou, while the lower segment is thicker in the Neijiang-Zigong-Luzhou area and the Dazu-Luzhou area. The areas with big reservoir thickness at tectonic slope or syncline parts are the favorable exploration areas.HUANG Shipeng JIANG Qingchun FENG Qingfu WU Ya LU Weihua SU Wang CHEN Xiaoyue REN Mengyi PENG Hui 2019Petroleum Exploration and Development2019,46,2:0
10Research on Installation and Setting of CAAS显示文摘The criticality accident alarm system(CAAS)is used to monitor the absorbed dose in the places where there is a critical accident risk.When a criticality accident occurs,the alarm will be quickly triggered and the nuclear emergency response will be initiated.However,the research in this field has not been carried out interiorly,and of which there is a lack of references.For this reason,the Nuclear Critical Safety Center undertakes works to solve the problem of location installation and alarm threshold setting of CAAS.LIU Feng ZHU Qingfu XIA Zhaodong ZHOU Qi 2018中国原子能科学研究院年报2018,,1:0
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