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混合相型粉刷石膏的研制 被引量:2
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作者 朱希江 《房材与应用》 1999年第4期13-15,共3页
混合相型粉刷石膏是一种新型理想的墙体及顶棚抹灰材料。文中对混合相型粉刷石膏的原材料附加剂种类与掺量、产品性能及应用进行了研究分析。
关键词 混合相型 粉刷石膏 研制
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Disentanglement of Qubit in Dephasing Model
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作者 YANG Qing YANG Ming CAO Zhuo-Liang 《Communications in Theoretical Physics》 SCIE CAS CSCD 2009年第4期627-630,共4页
We investigate the entanglement evolution of two qubits that are initially in Werner state under the classical phase noise. We discuss the influence of mixture degree on disentanglement. It is showed that the more mix... We investigate the entanglement evolution of two qubits that are initially in Werner state under the classical phase noise. We discuss the influence of mixture degree on disentanglement. It is showed that the more mixed the state, the shorter is the time of disentanglement. 展开更多
关键词 DISENTANGLEMENT dephase
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Phase Equilibrium Calculations in Mixtures Containing Caprolactam with a UNIFAC Model 被引量:3
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作者 龚行楚 吕阳成 骆广生 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2010年第2期286-291,共6页
An extended liquid-liquid equilibrium(LLE) UNIFAC model is proposed to describe phase equilibria of mixtures containing caprolactam.In this model,caprolactam is introduced as a new group.New group interaction paramete... An extended liquid-liquid equilibrium(LLE) UNIFAC model is proposed to describe phase equilibria of mixtures containing caprolactam.In this model,caprolactam is introduced as a new group.New group interaction parameters are calibrated from 156 sets of liquid-liquid equilibrium data.The present model gives satisfactory correlation and prediction in liquid-liquid equilibrium,including quaternary systems containing the mixed solvent of an alcohol and an alkane.The model can be applied to predict caprolactam solubility in water and benzene accurately.Freezing point and vapor-liquid equilibrium of binary systems containing caprolactam are also predicted with the extended LLE UNIFAC model.Satisfactory prediction results are obtained. 展开更多
关键词 CAPROLACTAM UNIFAC model liquid-liquid equilibrium solid-liquid equilibrium vapor-liquid equilibrium
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Numerical Simulation of Enhanced Oil-Water Separation in a Three-Stage Double-Stirring Extraction Tank 被引量:3
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作者 Lü Chao Zhang Zimu +3 位作者 Zhao Qiuyue Wang Shuchan Zhang Ting'an Liu Yan 《China Petroleum Processing & Petrochemical Technology》 SCIE CAS 2015年第4期121-126,共6页
Numerical simulation of enhanced fluid flow characteristics in a three-stage double-stirring extraction tank was conducted with the coupling of an Eulerian multiphase flow model and a Morsi-Alexander interphase drag f... Numerical simulation of enhanced fluid flow characteristics in a three-stage double-stirring extraction tank was conducted with the coupling of an Eulerian multiphase flow model and a Morsi-Alexander interphase drag force model. Results show that the addition of a stirring device into the settler can efficiently reduce the volume fraction of out-of-phase impurity in the outlet, and accelerate the settling separation of oil-water mixture. Such addition can also effectively break down the oil-water-wrapped liquid droplets coming from the mixer, inhibit reflux from the outlet, and improve the oil-water separation. The addition of a stirring device induces ignorable power consumption compared with that by the mixer, and can thus facilitate the commercialized promotion of this novel equipment. 展开更多
关键词 three-stage extraction tank double-stirring numerical simulation flow characteristics power
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Thermodynamic prediction of metastable phases of Ni-Ti system formed by ion beam mixing 被引量:3
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作者 ZHAO ShiZhen LI JiaHao LIU BaiXin 《Science China(Technological Sciences)》 SCIE EI CAS 2012年第4期921-926,共6页
By taking into account the valence electron number and periodic number of constituting metals, a new method is first proposed to calculate the structural enthalpy in the Miedema's model and the modified Miedema... By taking into account the valence electron number and periodic number of constituting metals, a new method is first proposed to calculate the structural enthalpy in the Miedema's model and the modified Miedema's model is then used to predict the formation of metastable phases in Ni-Ti system. To testify the relevance of the present prediction, the multilayered films of Ni1-xTix (x=27.3, 30.5, 42.4, 83.1, 89) are prepared and irradiated by 200 keV xenon ions. Experiment results reveal that uniform amorphous phases are obtained in the Ni72.7Ti27.3, Ni69.5Ti30.5, and Ni57.6Ti42.4 films by increasing the irradiation dose. While for the Ni16.9Ti83.1 and Ni11Ti89 films, an hcp Ti-based solid solution phase and a bcc Ti-rich solid solution phase coexist upon irradiation dose higher than 6×1014 Xe+/cm2. The predictions of relative stabilities of metastable phases in Ni-Ti system by the modified Miedema's model match well with IBM experiments, thus justifying the modification proposed in the present study. 展开更多
关键词 metallic glasses THERMODYNAMICS multilayer thin film ion-beam processing
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Orthogonal Arrays Robust to a Specified Set of Nonnegligible Effects 被引量:1
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作者 CHEN Xueping LIN Jinguan 《Journal of Systems Science & Complexity》 SCIE EI CSCD 2016年第2期531-541,共11页
This paper considers experimental situations where the interested effects have to be or- thogonal to a set of nonnegligible effects. It is shown that various types of orthogonal arrays with mixed strength are A-optima... This paper considers experimental situations where the interested effects have to be or- thogonal to a set of nonnegligible effects. It is shown that various types of orthogonal arrays with mixed strength are A-optimal for estimating the parameters in ANOVA high dimension model representation. Both cases including interactions or not are considered in the model. In particularly, the estimations of all main effects are A-optimal in a mixed strength (2, 2)3 orthogonal array and the estimations of all main effects and two-factor interactions in G~ x G~ are A-optimal in a mixed strength (2, 2)4 orthogonal array. The properties are also illustrated through a simulation study. 展开更多
关键词 Design of experiment matrix image orthogonal array robust design.
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FURTHER STUDY STRONG CONSISTENCY OF M ESTIMATOR IN LINEAR MODEL FOR ρ-MIXING RANDOM SAMPLES 被引量:2
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作者 Qunying WU 《Journal of Systems Science & Complexity》 SCIE EI CSCD 2011年第5期969-980,共12页
The strong consistency of M estimators of the regression parameters in linear models for ρ-mixing random errors under some mild conditions is established, which is an essential improvement over the relevant results i... The strong consistency of M estimators of the regression parameters in linear models for ρ-mixing random errors under some mild conditions is established, which is an essential improvement over the relevant results in the literature on the moment conditions and mixing errors. Especially, Theorem of Wu (2005) is improved essentially on the moment conditions. 展开更多
关键词 Linear model M estimator moment condition ρ-mixing random error strong consistency
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Research on the control method for voltage-current source hybrid-HVDC system 被引量:13
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作者 GUO ChunYi LIU WenJing ZHAO ChengYong 《Science China(Technological Sciences)》 SCIE EI CAS 2013年第11期2771-2777,共7页
The hybrid-HVDC topology,which consists of line-commutated-converter(LCC)and voltage source converter(VSC)and combines their advantages,has extensive application prospects.A hybrid-HVDC system,adopting VSC on rectifie... The hybrid-HVDC topology,which consists of line-commutated-converter(LCC)and voltage source converter(VSC)and combines their advantages,has extensive application prospects.A hybrid-HVDC system,adopting VSC on rectifier side and LCC on inverter side,is investigated,and its mathematic model is deduced.The commutation failure issue of the LCC converter in the hybrid-HVDC system is considered,and a novel coordinated control method is proposed to enhance the system commutation failure immunity.A voltage dependent voltage order limiter(VDVOL)is designed based on the constant DC voltage control on the rectifier side,and constant extinction angle backup control is introduced based on the constant DC current control with voltage dependent current order limiter(VDCOL)on the inverter side.The hybrid-HVDC system performances under normal operation state and fault state are simulated in the PSCAD/EMTDC.Then,system transient state performances with or without the proposed control methods under fault condition are further compared and analyzed.It is concluded that the proposed control method has the ability to effectively reduce the probability of commutation failure and improve the fault recovery performance of the hybrid-HVDC system. 展开更多
关键词 line commutated converter (LCC) voltage source converter (VSC) hybrid-HVDC system voltage dependent voltageorder limiter (VDVOL) constant extinction angle backup control commutation failure
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Simplified Numerical Study of Evaporation Processes Inside Vertical Tubes
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作者 Pawe Ocoń Marzena Nowak Stanisaw Lopata 《Journal of Thermal Science》 SCIE EI CAS CSCD 2014年第2期177-186,共10页
The paper presents a simplified numerical model of evaporation processes inside vertical tubes.In this model only the temperature fields in the fluid domain(the liquid or two-phase mixture) and solid domain(a tube wal... The paper presents a simplified numerical model of evaporation processes inside vertical tubes.In this model only the temperature fields in the fluid domain(the liquid or two-phase mixture) and solid domain(a tube wall) are determined.Therefore its performance and efficiency is high.The analytical formulas,which allow calculating the pressure drop and the distribution of heat transfer coefficient along the tube length,are used in this model.The energy equation for the fluid domain is solved with the Control Volume Method and for the solid domain with the Finite Element Method in order to determine the temperature field for the fluid and solid domains. 展开更多
关键词 Numerical modeling heat transfer EVAPORATION vertical tubes Finite Element Method
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