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Experimental study of the relationship between fluid density and saturation and sonic wave velocity of rock samples from the WXs Depression,south china sea

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Petroleum science 2011年第1期8卷 43-48页

作者： Pei Fagen Zou Changchun He Tao Pan Lingzhi Xiao Kun shi Ge Ren Keying Key Laboratory of Geo-detection（china university of Geo{2.s Beijing）Ministry of EducationBeijing 100083 China school of Earth and space sciences Peking UniversityBeijing 100871China Zhanjiang Branch of china National Offshore Oil Corporation Ltd. Guangdong 524057China

The relationship between fluid density and saturation and sonic wave velocity of rock samples taken from the WXs Depression in the south china sea was studied by an oil-water replacement experiment under simulated in-situ temperature and pressure *** kinds of low-density oils（0.691 and 0.749 g/cm^3） and two kinds of high-density oils（0.834 and 0.873 g/cm^3） were used to saturate the rock samples at different oil-saturation states,and the saturated P- and s-wave velocities were *** Gassmann＇s equation,the theoretical P- and s-wave velocities were also calculated by the fluid replacement *** the comparison of the measured values and the theoretical values, this study comes to the following conclusions.（1） With the increase of oil saturation and the decrease of water saturation,the P-wave velocity of rock samples saturated by low-density oil increases and the changing rule is in accord with the effective fluid theory;the P-wave velocity of rock samples saturated by high-density oil decreases and the changing rule goes against the theory.（2） With the increase of oil density（namely 0.691→0.749→0.834→0.873 g/cm^3） when oil saturation is unchanged,P-wave velocity increases gradually.（3） The s-wave velocity is always stable and is not affected by the change of oil density and *** results can be used to constrain pre-stack seismic inversion,and the variation rule of sonic wave velocity is valuable for hydrocarbon identification in the study area.

关键词： Rock physics saturation compressional wave shear wave water drive Gassmann's equation fluid replacement

Ni-loaded Catalyst Containing Activated Clay for Maleic Anhydride Hydrogenation to succinic Anhydride

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china Petroleum Processing & Petrochemical technology 2011年第4期13卷 35-40页

作者： Tian Weiping Guo shaofei shi Li (The state Key Laboratory of Chemical Engineering, East china university of science and technology, shanghai 200237) E china Univ sci & Technol State Key Lab Chem Engn Shanghai 200237 Peoples R China

In this work, the hydrogenation of maleic anhydride to succinic anhydride in the presence of 5 m%Ni/clay catalysts was investigated. These catalysts were characterized by X-ray diffraction （XRD）, H2 temperature programmed reduction （TPR） and thermogravimetric analysis （TGA） techniques. The XRD and TPR studies showed that Ni was present as Ni2＋ on the support, which indicated that there were no elemental nickel （Ni^0） and Ni203 species in the unreduced samples. Increasing of calcination temperature to 650 ℃ leads to destruction of the support structure observed in TGA, while the catalyst sample calcined at 550 ℃ exhibits better performances than other samples. The ideal conversion of maleic anhydride （97.14%） and selectivity of succinic anhydride （99.55%） were realized at a reaction temperature of 180 ℃ and a weight hourly space velocity of 4 h^-1 under a reaction pressure of 1 MPa.

关键词： maleic anhydride hydrogenation succinic anhydride nickel

Kinetics and Mechanism of Interfacial Reaction in a siC_f/Ti Composite

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Journal of Materials science & technology 2003年第5期19卷 407-410页

作者： Guoxing ZHANG, Qiang KANG, Nanlin shi, Geping LI and Dong LIInstitute of Metal Research, chinese academy of sciences, shenyang 110016, china Inst. of Metal Res. Chinese Acad. of Sci. Shenyang 110016 China

In order to evaluate the interfacial reaction, a siCf/Ti (TA1) composite was fabricated by a vacuum hot pressing method and then heat-treated in vacuum at 800℃ for up to 100 h. The elemental distributions of C, si and Ti at the interfacial reaction zone were investigated. It was found that the reaction zone occurs during the fabrication process and continuously grows at high temperature because the si and C atoms diffuse from siC fibers to the matrix and Ti atoms diffuse in the opposite direction. The growth of the reaction zone is diffusion controlled and the mechanism of the reaction can be described by a reactive diffusion model of solid-state growth of an AmBn layer between two elementary substances A and B.

关键词： siCf/Ti (TA1) composite Interfacial reaction Diffusion control

study on Removal of Naphthenic Acids from White Oil by[BMIM]Br-AlCl_3

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china Petroleum Processing & Petrochemical technology 2010年第4期12卷 46-51页

作者： Li Jing sun Yu shi Li (The state Key Laboratory of Chemical Engineering,East china university of science and technology, shanghai 200237) E china Univ sci & Technol State Key Lab Chem Engn Shanghai 200237 Peoples R China

The removal of acid compounds （naphthenates） from acidic oil with ionic liquids was systematically investigated. [BMIM]Br-AlCl3 was used to investigate the effect on deacidification of oil. Experimental results showed that at a temperature of 323K with a molar ratio of AlCl3 to [BM1M]Br-AlCl3 of 0.2, and a mass ratio of IL to white oil of 4%, the deacidification rate could reach 75.9%. And a reaction time of 4 h was sufficient to achieve the goal. The study on reproducibility of catalytic performance of [BMIM]Br-AlCl3 showed the possibility of using the ionic liquid in the continuous catalytic reaction.

关键词： naphthenic acid ionic liquid white oil deacidification

A DiscreteMulti-Objective squirrel search Algorithm for Energy-Efficient Distributed Heterogeneous Permutation Flowshop with Variable Processing speed

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Computers, Materials and Continua 2024年第1期81卷 1757-1787页

作者： Zeng L. Ding Z. shi J. Wang s. school of Electrical and Electronic Engineering Hubei University of Technology Wuhan 430068 China Hubei Key Laboratory for High-Efficiency Utilization of solar Energy and Operation Control of Energy storage system Hubei University of Technology Wuhan 430068 China Xiangyang Industrial Institute of Hubei university of technology Xiangyang 441100 China

In the manufacturing industry, reasonable scheduling can greatly improve production efficiency, while excessive resource consumption highlights the growing significance of energy conservation in production. This paper studies the problem of energy-efficient distributed heterogeneous permutation flowshop problem with variable processing speed (DHPFsP-VPs), considering both theminimum makespan and total energy consumption (TEC) as objectives. A discrete multi-objective squirrel search algorithm (DMssA) is proposed to solve the DHPFsPVPs. DMssA makes four improvements based on the squirrel search algorithm. Firstly, in terms of the population initialization strategy, four hybrid initialization methods targeting different objectives are proposed to enhance the quality of initial solutions. secondly, enhancements are made to the population hierarchy system and position updating methods of the squirrel search algorithm, making it more suitable for discrete scheduling problems. Additionally, regarding the search strategy, six local searches are designed based on problem characteristics to enhance search capability. Moreover, a dynamic predator strategy based on Q-learning is devised to effectively balanceDMssA's capability for global exploration and local exploitation. Finally, two speed control energy-efficient strategies are designed to reduce TEC. Extensive comparative experiments are conducted in this paper to validate the effectiveness of the proposed strategies. The results of comparing DMssA with other algorithms demonstrate its superior performance and its potential for efficient solving of the DHPFsP-VPs problem. © 2024 The Authors. Published by Tech science Press.

关键词： Distributed heterogeneous permutation flowshop problem energy-efficient squirrel search algorithm muli-objective optimization variable processing speed

Code Component Composition Reuse Is a New Programming Paradigm

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Wuhan university Journal of Natural sciences 2001年第Z1期6卷 292-297页

作者： Ying shi 1,Yuan sheng Qiong 1,Xu Gang 1,He Ke Qing 2 1.state Key Laboratory of software Engineering, Wuhan university, Wuhan 430072, china 2.school of Computer science and technology, Wuhan university, Wuhan 430072, china state Key Laboratory of software Engineering Wuhan University Wuhan China school of Computer science and technology Wuhan University Wuhan China

After describing the characteristics of programming paradigm, this paper introduces the approach of code component composition reuse in detail, proposes and discusses viewpoint that code component composition reuse is a kind of new programming paradigm. This paper also specifies the characteristics of this new programming paradigm in detail, and points out some issues that must be resolved for using this new programming paradigm.

关键词： programming paradigm code component code component composition reuse

The algae-lytic ability of bacterium DC_(10) and the influence of environmental factors on the ability

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science china(Life sciences) 2005年第3期48卷 250-255页

作者： shi shunyu 1,2 , LIU Yongding 1 , sHEN Yinwu 1 & LI Genbao 1 1. Institute of Hydrobiology, chinese academy of sciences, Wuhan 430072, china 2. Graduate school of chinese academy of sciences, beijing 100039, china 1. Institute of Hydrobiology Chinese Academy of Sciences 430072 Wuhan China 2. Graduate school of chinese academy of sciences 100039 Beijing China

A lysing-bacterium DC10, isolated from Dianchi Lake of Yunnan Province, was characterized to be Pseudomonas sp. It was able to lyse some algae well, such as Microcystis viridis, selenastrum capricornutum, and so on. In this study, it was shown that the bacterium lysed the algae by releasing a substance; the best lytic effects were achieved at low tempera- tures and in the dark. Different concentrations of CaCl2 and NaNO3 influenced the lytic effects; the ability to lyse algae decreased in the following order: pH 4 > pH 9 > pH 7 > pH 5.5. It was significant to develop a special technology with this kind of bacterium for controlling the bloom- forming planktonic microalgae.

关键词： lysing-bacterium, lyse, algae, control.

TOPsIsEvaluation Method on″Have Both Hardand soft″systems

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Journal of systems science and systems Engineering 2001年第1期13卷 121-124页

作者： CHEN shi\|lian Kunming university of science and technology, Kunming 650093, china Kunrning university of science and technology Kunming 650093 China

：In "Have Both Hard and soft" systems, the soft targets and hard targets are divided into twodistinct target system. The measured results of soft target system are regarded as a matrix with intervalnumbers. On the basis of Topsis method, we discuss a new Topsis evaluation method on "Have Both Hardand soft" systems, which combined soft targets with hard targets.

关键词： soft target hard target Close degree

An Intelligent Decision support system Generator

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Journal of systems Engineering and Electronics 1993年第1期4卷 45-52页

作者： shi Zhenxia and Lu JukangDept. of Computer science, shanghai Univ. of science and technology, shanghai 201800, P.R. china Dept. of Computer science Shanghai Univ. of Science and Technology Shanghai 201800 P.R. China

The focus of this paper is on a new concept framework and an architecture of an intelligent decision support syetem generator (DssG). The framework results from a synthesis of two existing frameworks: spragae and Bonczek, while the architecture is a rooted partial order network. From our experience which comes out of the project of DssG, we consider that they are keys of further research and development of Dss.

关键词： Decision support system Decision support system generator Intelligent decision support system AI technology Hypertext technology.