检索结果-南通市图书馆

A NEW WELL TEST MODEL FOR STRESS-SENSITIVE AND RADIALLY HETEROGENEOUS DUAL-POROSITY RESERVOIRS WITH NON-UNIFORM THICKNESSES

在线全文

学校读者我要写书评

暂无评论

Journal of Hydrodynamics 2011年第6期23卷 759-766页

作者： zhang lie-hui, guo jing-jing, liu qi-guo State Key Laboratory of Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China State Key Laboratory of Reservoir Geology and Exploitation Southwest Petroleum University Chengdu 610500 China

This article presents a new well test model for stress-sensitive composite dual-porosity reservoirs based on the concept of permeability modulus, where the rock and fluid properties as well as the formation thickness vary in the radial direction. An analytical solution in the Laplace space for the pressure-transient behavior for a line-source, constant-rate well of this type of reservoir is obtained with the Laplace transformation and the perturbation technique. The pressure and its derivative in the reservoir and the effects of relevant parameters on the pressure-transient response are obtained. The model as well as the corresponding type curves may be used in predicting the production performance or analyzing the production data for this type of reservoir.

关键词： non-uniform thickness stress-sensitive composite dual-porosity well test model type curve

WELL TESTING ANALYSIS FOR HORIZONTAL WELL WITH CONSIDERATION OF THRESHOLD PRESSURE GRADIENT IN TIGHT GAS RESERVOIRS

在线全文

学校读者我要写书评

暂无评论

Journal of Hydrodynamics 2012年第4期24卷 561-568页

作者： guo jing-jing zhang Su zhang lie-hui qiNG Hairuo liu qi-guo State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum UniversityChengdu 610500 China Central Sichuan Mining District PetroChina Southwest Oil and Gas Field Company Suining 629000 China Department of Geology University of Regina Regina SK S4S 0A2 Canada

A fundamental solution for homogeneous reservoir in infinite space is derived by using the point source function with the consideration of the threshold pressure gradient. The fundamental solution of the continuous point source function is then derived based on the Green function. Various boundary conditions of the reservoirs are considered for this case and the corresponding solutions are obtained through the mirror image reflection and the principle of superimposition. The line source solution is obtained by integration. Subsequently, the horizontal-well bottom hole pressure response function for a non-linear gas flow in the homogeneous gas reservoir is obtained, and the response curve of the dimensionless bottom hole pressure and the derivative for a horizontal well in the homogeneous gas reservoir are obtained. In the end, the sensitivities of the relevant parameters are analyzed, The well test model presented in this paper can be used as the basis of the horizontal well test analysis for tight gas reservoirs.

关键词： horizontal well non-linear gas flow threshold pressure gradient tight gas reservoir

Mesh-supported V2O5-WO3/TiO2 nanosheet array catalysts for efficient removal of NOx

在线全文

学校读者我要写书评

暂无评论

Tungsten 2025年第1期 100-111页

作者： Zhi-qi zhang liu Yang Wen Luo Vladimir An jing Li Bao-Dan liu School of Materials Science and Engineering Northeastern University Foshan Graduate School of Innovation Northeastern University Kizhner Research Center School of Advanced Manufacturing Technologies Tomsk Polytechnic University

The design and synthesis of vanadium-based denitration catalysts with low-temperature activity pose significant challenges in the field of toxic gas *** this study,we have developed a novel approach to fabricate highly efficient V2O5-WO3/TiO2monolithic mesh catalysts for NOxreduction at low ***,TiO2nanosheets with strong adhesion and large surface area were grown on Ti mesh using plasma electrolytic oxidation technology and hydrothermal ***,super-small traces of WO3and V2O5active nano-species were subsequently deposited on TiO2nanosheets using the deposition-precipitation *** to traditional ceramic-based V2O5-WO3/TiO2catalysts,our V2O5-WO3/TiO2monolithic mesh catalyst exhibits superior mechanical performance,excellent thermal conductivity,lower pressure drop,higher utilization of active components,and stronger synergistic ***,the V2O5-WO3/TiO2monolithic mesh catalysts exhibited excellent low-temperature catalytic activity with 98% of NOxconversion at 220℃,and remarkable long-term SO2tolerance and water resistance in the selective catalytic reduction（SCR） of NOxwith *** SCR reaction of tiny V2O5and WO3active species supported on TiO2nanosheets directly demonstrated to follow the Eley-Rideal mechanism by in situ infrared spectra.

关键词：

Regulation of solvation structure and the cooperation environment of potassium bonds for wider-temperature adaptive potassium storage

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Rare Metals 2024年第4期43卷 1610-1621页

作者： Bing-Bing liu Yi-hui liu You-Bin zhang Zhen-guo qi guo-hui qin State Key Laboratory Base for Eco-Chemical Engineering College of Chemical EngineeringQingdao University of Science and TechnologyQingdao266042China Shandong Synergetic Innovation Center of Ecological and Chemical Engineering Qingdao266042China

Antimony selenide(Sb_(2)Se_(3))is one of the perspective candidates for potassium-ion batteries due to its advanced virtues stem including featured high capacity,fertile reserves and the relative narrow band *** the unique advantages,it is still plagued by the unstable interface compatibility and poor wider-temperature *** optimization of microstructure and the construction of inorganic-organic hybrids with a low desolvation barrier and rapid kinetics behaviors are efficient to address these *** Sb_(2)Se_(3)nanorods enclosed by the S-doped carbon layer(SC),further crosslinked by the poly(N-isopropylacrylamide)(PM)film(PM@Sb_(2)Se_(3)@SC),were artificially fabricated,and it displays the enrichment ion aggregated model as well as contacted ion pair state,the well-tailored cooperation environment of potassium bonds,assuring a homogeneous potassium deposition and an excellent widertemperature *** complicated experimental studies and theoretical calculations authenticate the synergistic effects of geometric conformation and compositional design for the tremendously enhanced potassium ***,the full device over PM@Sb_(2)Se_(3)@SC anode and the potassium Prussian blue cathode manifests impressively durable cycling life and wider-temperature adaptability,verifying the glorious contribution from the finely manipulation in solvation structure and potassium bonds to enhancing the potassium storage behaviors.

关键词： Anode Sb_(2)Se_(3) rods Interface compatibility Inorganic-organic electrode Potassium ion battery

Preparation by High-gravity Technology of a Cu/N-TiO_(2) Nanophotocatalyst for Photodegradation of Phenol Wastewater

在线全文

学校读者我要写书评

暂无评论

China Petroleum Processing & Petrochemical Technology 2023年第1期25卷 151-161页

作者： Ren Xueqing zhang qiaoling zhang Yanfen qi Guisheng guo jing Gao jing Shanxi Province Key Laboratory of Higee-Oriented Chemical Engineering School of Chemical Engineering and TechnologyNorth University of ChinaTaiyuanShanxi 030051China

TiO_(2) is a promising photocatalyst,but its practical use is restricted by its low catalytic efficiency caused by the large particle size and uneven size distribution,which arise from the limited contact area of the liquid-liquid interface during *** stream-rotating packed bed(IS-RPB)reactors,which are used for process intensification,overcome the mixing limitation of traditional stirred-tank reactors and provide a micromixing environment at the molecular scale for the two liquid phases,which can reduce the particle size and distribution ***/N-TiO_(2) nanoparticles were prepared in an IS-RPB reactor by the one-step precipitation method using urea as the nitrogen source,titanyl sulfate as the titanium source,copper chloride as the copper source,and ammonium hydroxide as the *** particle size of the photocatalyst was about 11.40 nm with a narrow size distribution measured by scanning electron microscopy and transmission electron microscopy.X-ray photoelectron spectroscopy showed that N replaced some O and was uniformly dispersed in the TiO_(2) lattice as interstitial and substitutional *** replaced some Ti and was present as Cu^(2+).The synergistic effects of these two elements formed a new impurity energy level and reduced the band gap energy of the TiO_(2) *** specific surface area of the Cu/N-TiO_(2) nanoparticles was 152.97 m^(2)/*** effects of the main factors on the degradation rate were studied,and the removal efficiency reached 100%under the optimal operating conditions after 2 h ultraviolet *** electron paramagnetic resonance measurements showed that the superoxide radical played a main role in the degradation process,whereas the photogenerated holes and hydroxyl radicals had weak effects.

关键词： Cu/N-TiO_(2) co-doping Impinging stream rotating packed bed photocatalysis phenol

Effects of Joint on Dynamics of Space Deployable Structure

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Mechanical Engineering 2013年第5期26卷 861-872页

作者： guo Hongwei zhang jing liu Rongqiang DENG Zongquan School of Mechanical and Electrical Engineering Harbin Institute of Technology

Joints are necessary components in large space deployable truss structures which have significant effects on dynamic behavior of these joint dominated *** researches usually analyzed effects of one or fewer joint characters on dynamics of jointed *** of joint stiffness,damping,location,number,clearance and contact stiffness on dynamics of jointed structures are systematically *** beam model containing linear joints is developed based on finite element method,influence of joint on natural frequencies and mode shapes of the jointed system are *** results show that frequencies of jointed system decrease dramatically when peak mode shapes occur at joint locations,and there are cusp shapes present in mode *** frequencies increase with joint damping increasing,there are different joint damping to achieve maximum system damping for different joint *** nonlinear force-displacement is described by describing function method,one-DOF model containing nonlinear joints is established to analyze joints freeplay and hysteresis *** results show that nonlinear effects of freeplay and hysteresis make dynamic responses switch from one resonance frequency to another frequency when amplitude exceed demarcation *** contact stiffness determine degree of system nonlinearity,while exciting force level,clearance and slipping force affect amplitude of dynamic *** responses of joint dominated deployable truss structure under different sinusoidal exciting force levels are *** test results show obvious nonlinear behaviors contributed by joints,dynamic response shifts to lower frequency and higher amplitude as exciting force *** test results are further compared with analytical results,and joint nonlinearity tested is coincident with hysteresis *** method of joint effects on dynamic characteristics of jointed system is proposed,which ca

关键词： deployable structure joint dynamic mode shape experiment

Antibonding orbital tailor and stress relief engineering for FeS_(2)complex toward superior sodium storage

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2024年第10期43卷 5048-5059页

作者： You-Bin zhang Zhen-guo qi Fu-Sheng liu guo-hui qin State Key Laboratory Base for Eco-Chemical Engineering College of Chemical EngineeringQingdao University of Science and TechnologyQingdao 266042China Shandong Synergetic Innovation Center of Ecological and Chemical Engineering Qingdao 266042China

The sluggish kinetics behaviors and vast volume variations of Na^(+)hosts to FeS_(2)anode involved intercalation,and conversion reactions plague its applicability of sodium-ion batteries(SIBs).Here,a significantly expedited kinetics via cation intercalation and considerably relieved stress accumulation by constructing the concave scaffold protector are approached for FeS_(2)*** Mn^(2+)intercalation into FeS_(2),a new stable Mn-FeS_(2)was generated with distorted coordination;elevated antibonding orbital occupancy and lowed d band center to the release of more free Na^(+)were achieved,which was further encapsulated by hollow bowl-like carbon spheres(BC)This cation intercalation and concave morphology strategies confer Mn-FeS_(2)@BC significantly enhanced electron ion transport kinetics via reversed electron transfer to FeS_(2)fast desolvation kinetics,and evidently depressed structural deformation during Na^(+)insertion and ***,Mn-FeS_(2)@BC delivers the longevity and stable Na^(+)storage capacity in both half and full cell ***,Mn-FeS_(2)@BC also displays excellen adaptability in a wider temperature *** work proposes new views into the deep regulation of electrochemical performance of transition metal anodes via intercalation chemistry and concave engineering.

关键词： FeS_(2) Intercalation chemistry Concave engineering Sodium capture

Applications of high-gravity technologies in gas purifications: A review

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Engineering 2019年第6期27卷 1361-1373页

作者： jing guo Weizhou Jiao Guisheng qi Zhiguo Yuan Youzhi liu Shanxi Province Key Laboratory of Higee-Oriented Chemical Engineering School of Chemical Engineering and TechnologyNorth University of ChinaTaiyuan 030051China National Demonstration Center for Experimental Comprehensive Chemical Engineering Education North University of ChinaChina

The traditional gas purification techniques such as wet gas desulfurization, with their advantages of large-scale implementation and maturity, have still been widely used. However, the main drawback of these techniques is the low transfer efficiency, which normally needs towers as tall as tens of meters to remove the pollutants. Therefore, new technologies which could enhance the mass transfer efficiency and are less energy-intensive are highly desirable. As a process intensification technology, high-gravity technology, which is carried out in a rotating packed bed(RPB), has recently demonstrated great potential for industrial applications due to its high mass transfer efficiency, energy-saving, and smaller volume. This consequently provides higher efficiency in toxic gas removal, and can significantly reduce the investment and operation costs. In this review, the mechanism,characteristics, recent developments, and the industry applications of high-gravity technologies in gas purifications, such as hydrogen sulfide, nitrogen oxide, carbon dioxide, sulfur dioxide, volatile organic compounds and nanoparticle removal are discussed, most of the demonstration projects and practical application examples in gas purification come from China. The perspective and prospective of this technology in gas purification and other fields are also briefly discussed.

关键词： High gravity technology Rotating packed bed(RPB) Gas purification Desulfurization Pollution

Molecular and functional imaging in cancer-targeted therapy:current applications and future directions

在线全文

学校读者我要写书评

暂无评论

Signal Transduction and Targeted Therapy 2023年第3期8卷 1112-1143页

作者： jing-Wen Bai Si-qi qiu guo-Jun zhang Fujian Key Laboratory of Precision Diagnosis and Treatment in Breast Cancer Xiang’an Hospital of Xiamen UniversitySchool of MedicineXiamen University361100 XiamenChina Xiamen Key Laboratory of Endocrine-Related Cancer Precision Medicine Xiang’an Hospital of Xiamen UniversitySchool of MedicineXiamen University361100 XiamenChina Xiamen Research Center of Clinical Medicine in Breast and Thyroid Cancers Xiang’an Hospital of Xiamen UniversitySchool of MedicineXiamen University361100 XiamenChina Department of Breast-Thyroid-Surgery and Cancer Center Xiang’an Hospital of Xiamen UniversitySchool of MedicineXiamen University361100 XiamenChina Department of Medical Oncology Xiang’an Hospital of Xiamen UniversitySchool of MedicineXiamen University361100 XiamenChina Cancer Research Center of Xiamen University School of MedicineXiamen University361100 XiamenChina Diagnosis and Treatment Center of Breast Diseases Clinical Research CenterShantou Central Hospital515041 ShantouChina Guangdong Provincial Key Laboratory for Breast Cancer Diagnosis and Treatment Shantou University Medical College515041 ShantouChina

Targeted anticancer drugs block cancer cell growth by interfering with specific signaling pathways vital to carcinogenesis and tumor growth rather than harming all rapidly dividing cells as in cytotoxic *** Response Evaluation Criteria in Solid Tumor(RECIST)system has been used to assess tumor response to therapy via changes in the size of target lesions as measured by calipers,conventional anatomically based imaging modalities such as computed tomography(CT),and magnetic resonance imaging(MRI),and other imaging ***,RECIST is sometimes inaccurate in assessing the efficacy of targeted therapy drugs because of the poor correlation between tumor size and treatment-induced tumor necrosis or *** approach might also result in delayed identification of response when the therapy does confer a reduction in tumor *** molecular imaging techniques have rapidly gained importance in the dawning era of targeted therapy as they can visualize,characterize,and quantify biological processes at the cellular,subcellular,or even molecular level rather than at the anatomical *** review summarizes different targeted cell signaling pathways,various molecular imaging techniques,and developed ***,the application of molecular imaging for evaluating treatment response and related clinical outcome is also systematically *** the future,more attention should be paid to promoting the clinical translation of molecular imaging in evaluating the sensitivity to targeted therapy with biocompatible *** particular,multimodal imaging technologies incorporating advanced artificial intelligence should be developed to comprehensively and accurately assess cancer-targeted therapy,in addition to RECIST-based methods.

关键词： targeted drugs directions