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    题名 作者 年代 出处 被引量
1Model and Algorithm for the Optimal Controlled Partitioning of Power Systems显示文摘解列是电力系统在故障时结构完整性得不到保证的情况下分裂为2个或多个孤立稳定运行子系统的过程或操作。及时恰当的主动解列操作将能有效地避免因保护连锁动作使得电力系统被动解列而崩溃所造成的巨额经济损失。结合图论中的相关概念和输电网最优解列的物理过程,建立电力系统最优主动解列断面选择问题的完整数学模型,并基于含连通图约束的背包问题(connected graph constrained knapsack problem,CGKP)及其求解算法提出“搜索+调整”的2阶段求解方法。为降低问题的复杂性,将完整数学模型分解成图的最优平衡分割问题和基于优化潮流的调节问题,并分2个阶段分别求解。其中,图的最优平衡分割问题又被分解成多个CGKP,利用基于含CGKP的图分割方法进行求解。所提出的主动解列策略具有较强理论基础,计算复杂度低,算例的计算结果证明了该模型及算法的正确性和有效性。LIN Jikeng LI Shengwen WU Peng WANG Xudong SHAO Guanghui XU Xingwei MA Xin 2012中国电机工程学报2012,32,13:15
2General regularity of dynamic responses of slopes under dynamic input显示文摘Through lots of numerical simulations with FLAC3D, dynamic responses of slopes are comprehensively studied in this paper and the general regularities of the isoline of the coefficient of the displacement, velocity and acceleration of the slope section are reached. Given a certain material slope, if the height of the slope is less than a certain value, the displacement, velocity and acceleration linearly enlarge with elevation in the vertical direction; if the height of the slope surpasses the certain value, the displacement,velocity and acceleration do not linearly enlarge with elevation any more, on the other hand, they fluctuate with a certain rhythm. At the same time, the rhythm appears in the horizontal direction, and the displacement, velocity and acceleration of the slope surface enlarge near the slope surface. The distribution form of the isoline of the coefficient of displacement, velocity and acceleration in the section of the slope is remarkably affected by the slope angle. In the certain area near the slope surface, the isoline of displacement,velocity and acceleration is parallel to the surface of the slope; in the mean time the strike direction of the extremum area is parallel to the surface of the slope, too. The charts of the slope dynamic responses can be depicted with two indexes, one is the strike direction of the isoline, and the other is the number of the rhythm extremum area of the direction parallel to the surface of the slope.QI Shengwen, WU Faquan & SUN Jinzhong Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China College of Engineering Technique, China University of Geosciences, Beijing 100083, China 2003Science China(Technological Sciences)2003,46,z1:13
3Fe/Fe2O3 nanoparticles anchored on Fe-N-doped carbon nanosheets as bifunctional oxygen electrocatalysts for rechargeable zinc-air batteries显示文摘有高催化的活动和稳定性玩的 Electrocatalysts 在有希望的可更新的精力技术的一个关键角色,例如燃料房间和金属空气电池。这里,我们报导 Fe/Fe 2 O 3 nanoparticles 在 Fe-N-doped 碳 nanosheets 上抛锚了(Fe/Fe 2 导出壳的做 N 的碳 nanodots 由一条简单热分解途径面对 FeCl 3 作为碳和氮采购的 O 3@Fe-N-C) 使用虾。Fe/Fe 2 O 3@Fe-N-C 在 1,000 的热分解温度获得了 ??????????? ″ ? 猼灵资 ? ??( ??Yipeng Zang Haimin Zhang Xian Zhang Rongrong Liu Shengwen Liu Guozhong Wang Yunxia Zhang Huijun Zhao 2016Nano Research2016,9,7:10
4How does auditors' work stress affect audit quality?Empirical evidence from the Chinese stock market显示文摘With reference to the Job Demands-Control Model,we empirically examine the effect of auditors' work stress on audit quality using a sample of Chinese A-share listed companies and their signature auditors from 2009 to 2013.The results show that(1) there is generally no pervasive deterioration in audit quality resulting from auditors' work stress;(2) there is a significant negative association between work stress and audit quality in the initial audits of new clients;and(3) the perception of work stress depends on auditors' individual characteristics.Auditors from international audit firms and those in the role of partner respond more strongly to work stress than industry experts.Auditors tend to react more intensively when dealing with state-owned companies.We suggest that audit firms attach more importance to auditors' work stress and rationalize their allocation of audit resources to ensure high audit quality.Huanmin Yan Shengwen Xie 2016China Journal of Accounting Research2016,,4:10
5Investigating the Transport Mechanism of PM2.5 Pollution during January 2014 in Wuhan, Central China显示文摘Severe haze pollution that occurred in January 2014 in Wuhan was investigated. The factors leading to Wuhan’s PM2.5 pollution and the characteristics and formation mechanism were found to be significantly different from other megacities, like Beijing. Both the growth rates and decline rates of PM2.5 concentrations in Wuhan were lower than those in Beijing, but the monthly PM2.5 value was approximately twice that in Beijing. Furthermore, the sharp increases of PM2.5 concentrations were often accompanied by strong winds. A high-precision modeling system with an online source-tagged method was established to explore the formation mechanism of five haze episodes. The long-range transport of the polluted air masses from the North China Plain (NCP) was the main factor leading to the sharp increases of PM2.5 concentrations in Wuhan, which contributed 53.4% of the monthly PM2.5 concentrations and 38.5% of polluted days. Furthermore, the change in meteorological conditions such as weakened winds and stable weather conditions led to the accumulation of air pollutants in Wuhan after the long-range transport. The contribution from Wuhan and surrounding cities to the PM2.5 concentrations was determined to be 67.4% during this period. Under the complex regional transport of pollutants from surrounding cities, the NCP, East China, and South China, the five episodes resulted in 30 haze days in Wuhan. The findings reveal important roles played by transregional and intercity transport in haze formation in Wuhan.Miaomiao LU Xiao TANG Zifa WANG Lin WU Xueshun CHEN Shengwen LIANG Hui ZHOU Huangjian WU Ke HU Longjiao SHEN Jia YU Jiang ZHU 2019Advances in Atmospheric Sciences2019,36,11:10
6Synthesis and electrochemical performances of LiCoO_2 recycled from the incisors bound of Li-ion batteries显示文摘A new LiCoO2 recovery technology for Li-ion batteries was studied in this paper. LiCoO2 was peeled from the Al foil with dimethyl acetamide (DMAC), and then polyvinylidene fluoride (PVDF) and carbon powders in the active material were eliminated by high temperature calcining. Subsequently, Li2CO3, LiOH·H2O and LiAc·2H2O were added into the recycled powders to adjust the Li/Co molar ratio to 1.00. The new LiCoO2 was obtained by calcining the mixture at 850°C for 12 h in air. The structure and morphology of the recycled powders and resulting samples were studied by XRD and SEM techniques, respectively. The layered structure of LiCoO2 synthesized by adding Li2CO3 is the best, and it is found to have the best characteristics as a cathode material in terms of charge-discharge capacity and cycling performance. The first discharge capacity is 160 mAh·g-1 between 3.0-4.3 V. The discharge capacity after cycling for 50 times is still 145.2 mAh·g-1.LI Jinhui ZHONG Shengwen XIONG Daoling CHEN Hao 2009Rare Metals2009,28,4:6
7Phenomena and theoretical analysis for the failure of brittle rocks显示文摘Rockburst, an unstable failure of brittle rocks, has been greatly concerned in rock mechanics and rock engineering for more than 100 years. The current understanding on the mechanical mechanism of rockburst is based on the Coulomb theory, i.e. compressive-shear failure theory. This paper illustrates a series of tensile and tensile-shear fracture phenomena of rockburst, and proposes a methodology for the analysis of fracture mode and its energy dissipation process based on Griffith theory. It is believed that: (1) the fracture modes of rockburst should include compressive-shear, tensile-shear and pure tensile failures; (2) the rupture angle of rock mass decreases with the occurrence of tensile stress; (3) the proportion of kinetic energy in the released strain energy from a rockburst may be much larger than that transferred into surface energy; and (4) the understanding on the tensile and tensile-shear failure modes of rockburst may change the basic thinking of rockburst control, i.e. from keeping the reduction in initial compressive stress σ3 to restricting the creation of secondary tensile stress.Faquan Wu Jie Wu Shengwen Qi 2010Journal of Rock Mechanics and Geotechnical Engineering2010,2,4:5
8Synthesis of nitrogen-doped carbon nanotubes-FePO_4 composite from phosphate residue and its application as effective Fenton-like catalyst for dye degradation显示文摘Phosphate residue is regarded as a hazardous waste, which could potentially create significant environmental and health problems if it is not properly treated and disposed of. In this study, nitrogen-doped carbon nanotubes-FePO_4(NCNTs-FePO_4) composite was successfully synthesized from phosphate residue, and its application as an effective catalyst was explored. Firstly, an effective method was developed to recover FePO_4 from phosphate residue, achieving an impressive FePO_4 mass recovery rate of 98.14%. Then, the NCNTsFePO_4 catalyst was synthesized from the recovered FePO_4 by two main reactions, including surface modification and chemical vapor deposition. Finally, the synthesized NCNTs-FePO_4 was applied to photo-degrade 15 mg/L Rhodamine B(RhB) in a Fenton-like system. The results showed that 98.9% of RhB could be degraded in 60 min, closely following the pseudofirst-order kinetics model. It was found that even after six consecutive cycles, NCNTs-FePO_4 still retained a high catalytic capacity(>50%). Moreover, ·OH radicals participating in the RhB degradation process were evidenced using quenching experiments and electron paramagnetic resonance analysis, and a rational mechanism was proposed. It was demonstrated that the materials synthesized from hazardous phosphate residue can be used as an effective catalyst for dye removal.Lianmei Wei Yi Zhang Shengwen Chen Luping Zhu Xiaoyu Liu Lingxue Kong Lijun Wang 2019Journal of Environmental Sciences2019,31,2:4
9Adenosine monophosphate-activated protein kinase attenuates cardiomyocyte hypertrophy through regulation of FOXO3a/MAFbx signaling pathway显示文摘心肌质量的控制被认为被蛋白质合成和降级的动态平衡决定。最近的研究表明了表明小径戏的那萎缩相关的 forkhead 盒子 O 3a (FOXO3a )/muscle 萎缩 F 盒子(MAFbx ) 在解朊作用的调整的一个中央角色并且在 cardiomyocyte 肥大上施加禁止的效果。在这研究,我们测试了假设激活 monophosphate 的蛋白质 kinase (AMPK ) 激活稀释的那腺苷由调整表明小径和它的下游的蛋白质降级的 FOXO3a/MAFbx 的 cardiomyocyte 肥大。结果证明有 5-aminoimidazole-4-carboxamide ribonucleoside (AICAR ) 的 AMPK 的激活稀释了血管收缩素 II (Ang II ) 导致的 cardiomyocyte 肥大。AICAR 的 antihypertrophic 效果被 AMPK 禁止者混合物 C 弄钝。另外, AMPK 戏剧性地增加了抄写因素 FOXO3a 的活动,起来调整它的下游的 ubiquitin ligase MAFbx 的表示,和提高的 cardiomyocyte 解朊作用。同时,在 MAFbx 是由有 MAFbx-siRNA 的 cardiomyocytes 的 transfection 的 silenced 以后,蛋白质降级和 cardiomyocyte 肥大上的 AMPK 的效果被堵住。这些结果显示 AMPK 由经由表明小径的 FOXO3a/MAFbx 激活蛋白质降级在 cardiomyocyte 肥大的抑制起一个重要作用。Baolin Chen Qiang WU Zhaojun Xiong Yuedong Ma Sha Yu Dandan Chen Shengwen Huang Yugang Dong 2016Acta Biochimica et Biophysica Sinica2016,48,9:4
10Photodegradation of benzene by TiO_2 nanoparticles prepared by flame CVD process显示文摘Photodegradation of benzene at ppb levels by mixed-phase TiO 2 nanoparticles, synthesized by the oxidation of TiCl 4 in propane/air turbulent flame chemical vapor deposition (CVD) process, is investigated experimentally by using a tubular photoreactor with thin TiO 2 films coated on the reactor wall by sedimentation. Effects of inlet benzene concentration from 10 to 300 g/m 3 , rutile mass fraction from about 20 to 50% and photoluminescence (PL) intensity of TiO 2 nanoparticles on degradation degree are examined under the conditions of 70% relative humidity, 38 g/cm 2 catalyst loading, 24 mW/cm 2 UV irradiation of 254 nm and 5.7 s residence time in the reactor. Based on experimental results, separation of photo-induced electron (e- ) and hole (h + ) pairs by rutile phase is discussed as photo-induced electron (e- ) in anatase phase will migrate to rutile surface due to that the potential of conductive band of rutile is lower than that of anatase, leading to more holes ready on anatase surface for oxidation reactions.Hongyong Xie Luping Zhu Lingling Wang Shengwen Chen Dandan Yang Lijun Yang Guilan Gao Hao Yuan 2011Particuology2011,9,1:3
11Synthesis and Properties of UV-curable Hyperbranched Polyurethane and Its Application in the Negative-type Photoresist显示文摘UV-curable hyperbranched polyurethane(UV-HBPU) containing carboxyl groups was synthesized from isophorone diisocyanate(IPDI), diethanolamine(DEOA), polyethylene glycol(PEG-400), hydroxyethyl acrylate(HEA), and 2,2-bis(hydroxymethyl) propionic acid(DMPA). The UV-HBPU was used as a negative-type photoresist for a printed circuit board(PCB). Fourier-transform infrared spectroscopy(FTIR) and proton nuclear magnetic resonance(1HNMR) spectroscopy of UV-HBPUs indicated that the synthesis was successful. Differential scanning calorimetry(DSC) and thermogravimetric analysis(TGA) showed that the thermal stability of the UV-HBPUs decreased as the HEA content increased. The polymer exhibited excellent photoresist properties, and the resolution of circuits based on this negative-type photoresist reached 10 μm.刘敬成 LIN Licheng JIA Xiuli LIU Ren ZHANG Shengwen 刘晓亚 2014Journal of Wuhan University of Technology(Materials Science)2014,29,1:3
12Effects of the Process Parameters on Austenitic Stainless Steel by TIG-Flux Welding显示文摘TIG (钨插图气体) 的过程参数的效果焊接形态学,尖失真,铁酸盐内容并且在奥氏体的不锈钢的热裂开上的 -fluxwelding 被调查。焊接过程的自然发生的 TIG 通过激活流动在板上生产祷告的薄层被用于类型 304stainless 钢焊接 joint.TiO_2, SiO_2, Fe_2O_3, Cr_2O_3, ZnO 和 MnO_2 被用作激活的流动。试验性的结果显示焊接的 TIG 流动能增加焊接深度 / 宽度比率和还原剂 theHAZ (热影响了地区) 变化,因此,焊接的尖失真能被减少。在 TIG 流动焊接以内的保留的铁酸盐内容被增加,这也被发现,并且在为奥氏体的类型焊接金属的不锈钢减少热裂开的趋势有有益的效果。在在 TIG 流动的穿入的阳极点然后实质的增加的电流密度焊接的 A 血浆列收缩增加能被获得。Heryueh HUANG Shengwen SHYU Kuanghung TSENG Changpin GHOU 2006Journal of Materials Science & Technology2006,22,3:3
13Lightweight Design of Commercial Vehicle Cab Based on Fatigue Durability显示文摘To better improve the lightweight and fatigue durability performance of the tractor cab,a multi-objective lightweight design of the cab was carried out in this study.First,the finite element model of the cab with counterweight loading was established and then confirmed by the physical testing,and use the inertial reliefmethod to obtain stress distribution under unit load.The cab-frame rigid-flexible couplingmulti-body dynamicsmodelwas built by Adams/car software.Taking the cab airbag mount displacement and acceleration signals acquired on the proving ground as the desired signals and obtaining the fatigue analysis load spectrum through Femfat-Lab virtual iteration.The fatigue simulation analysis is performed in nCode based on the Miner linear fatigue cumulative damage theory.Then,with themass and fatigue damage values as the optimization objectives,the bending-torsional stiffness and first-order bending-torsional mode as constraints,the thickness variables are screed based on the sensitivity analysis.The experimental design was carried out using the Optimal Latin hypercube method,and the multi-objective optimal design of the cab was carried out using theKriging approximationmodel fitting and particle swarmalgorithm.The weight of the optimized cab is reduced by 7.8%on the basis of meeting the fatigue durability performance.Finally,a seven-axis road simulation test rig was designed to verify its fatigue durability.The results show the optimized cab can consider both lightweight and durability.Donghai Li Jiawei Tian Shengwen Shi Shanchao Wang Jucai Deng Shuilong He 2023Computer Modeling in Engineering & Sciences2023,,7:2
14Targeted tissue engineering:hydrogels with linear capillary channels for axonal regeneration after spinal cord injury显示文摘Spinal cord injury(SCI)frequently results in the permanent loss of function below the level of injury due to the failure of axonal regeneration in the adult mammalian central nervous system(CNS).The limited intrinsic growth capacity of adult neurons,a lack of growth-promoting factors and the multifactorial inhibitory microenvironment around the lesion site contribute to the lack ofShengwen Liu Armin Blesch 2018Neural Regeneration Research2018,13,4:2
15Kinetics of Carbide Layer Forming on the Surface of Steel in Molten Systems显示文摘A mathematical model of kinetics of carbide layer formed on the surface of steel in fused system was set up with the theory of non-stable diffusion mass transfer and regular solution sub-lattice. This model was analyzed and testified by the experiments in which the VC layers were formed on four kinds of steels as steel 45,4Cr5MoSiV1,T10, and Cr12MoV immersed in the V2O5-Na2O-B2O5 fused system with the reducing agent of silicon.The results showed that there was a good agreement between the model and the experimental results;the growth speed of carbide layer depended on the factors of carbon activity in substrate, treatment temperature,kinds of carbides and its structure etc.Shuhuan Wang Shengwen Wu Shantong Jin Metallurgy School, UST Beijing, Beijing 100083, China 1998International Journal of Minerals,Metallurgy and Materials1998,12,2:2
16Analyzing Asymmetric City Connectivity by Toponym on Social Media in China显示文摘The connectedness between cities has become one of the most widely discussed topics in urban and regional research in the mobile and big data era. One problem identified is the asymmetric city connectivity, partially due to data availability. We present a data-driven approach based on location and toponym(place name) extracted from social media data, to assess the asymmetric connectivity between cities. The assumption is that a higher frequency of occurrences of the name of city i in posts located in city j would imply that the city i is more influential than other cities upon city j. In addition, we’ve developed a group of measurements such as the relatedness index, impact index, link strength index, dependence index, and structure similar index to characterize such interactions. This framework of connectivity measurements can also be used to support smart planning taking into account the evolving interplay among cities. The space-time structure of urban systems in China is examined as the case study.YE Xinyue GONG Junfang LI Shengwen 2021Chinese Geographical Science2021,31,1:2
17Study on Intelligent NC Programming for Complex Components of Marine Diesel Based on KBE and UG NX显示文摘The NC programming for complex components has lots drawbacks such as excessive repetitious labors,heavy work- load and lack of optimixation,which are especially serious in NC programming for complex components of marine diesel.Based on the key technologies of applying KBE(Knowledge Based Engineering)to NC programming——knowledge representation,general- ized knowledge base,knowledge acquisition and knowledge reasoning,the system of intelligent NC programming for complex com- ponents of marine diesel has been built by means of the knowledge template and the UG/Open.The experiment results indicate that the NC program generated with high efficiency of NC programming by the system is accurate enough to meet the need of NC ma- chining.Consequently,the automatization and intelligentization of NC programming has been presented,and the study is proved to be a successful attempt in the area of applying KBE to NC programming.ZHANG Liang ZHANG Shengwen FANG Xifeng Modern Manufacturing Technology Institute,Jiangsu University of Science and Technology,Zhenjiang 212003,China, 2006武汉理工大学学报2006,28,S3:2
18Synthesis of SiO2/polystyrene nanocomposite particles via miniemulsion polymerization 显示文摘Zhang Shengwen Zhou Shuxue Weng Yuming 2005Langmuir2005,21,6:1
19CXCL12-induced upregulation of FOXM1 expression promotes human glioblastoma cell invasion显示文摘Shengwen Wang Shanyi Zhang Junliang Li Xinke Xu Yinlun Weng Meiguang Zheng Leping Ouyang Fangcheng Li 2013Biochemical and Biophysical Research Communications2013,,:1
20Structure and electrical properties of PZT/LNO/PT multilayer films on stainless steel substrates显示文摘PbZr0.53Ti0.47O3 (PZT) ferroelectric thin films were deposited on LaNiO3 (LNO) by sol-gel method. The PbTiO3 (PT) seed layer was depos-ited between the LNO buffer layer and stainless steel (SS) substrate, which effectively decreased the annealing temperature of LNO layer from 750 C to 650 C. X-ray diffraction (XRD) reveals that LNO layers with PT layer crystallize into a perovskite phase on annealing at 650 C for 10 min. PZT deposited on LNO buffer layer with PT seed layer exhibits good ferroelectric property.Zhao, Xuelian Jiang, Dan Yu, Shengwen Cheng, Jinrong 2012Rare Metals2012,31,3:1
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