检索结果-南通市图书馆

A new numerical well testing approach: Application to characterization of complex fault structures

在线全文

学校读者我要写书评

暂无评论

Petroleum 2019年第3期5卷 295-302页

作者： Behzad Pouladi mohammad sharifi mohammad Reza Akbari s.m.hosseini-Nasab Department of Petroleum Engineering Amirkabir University of TechnologyIran

Fluid flow in hydrocarbon reservoirs and consequently optimum scenario for hydrocarbon production,is heavily influenced by reservoir *** are one of the most common types of heterogeneity found in *** faults,baffles(limited extent faults)and complex multiple fault geometries are among the most complicated and important types of faults that are difficult to *** faults,unlike the sealing faults,are in partial communication with other portions of the *** of faults'effect on reservoir connectivity and possible infill drilling plan for accessing all parts of the reservoirs,possible communication across the fault must be precisely *** order to detect the effect of a fault on communication within the reservoir,we need to analyze dynamic *** are a few analytical methods for modelling partially communicating faults,however,these methods may not be accurate enough and may be limited in application,especially in complex *** methods(*** difference or finite element)are also not computationally economical when a large number of grid blocks are *** the current work,the Fast marching method(Fmm)is applied to effectively mimic fluid flow in the heterogeneous areas,such as complex *** is shown that Fmm can capture the effect of different fault configurations on the bottom hole pressure and is also able to capture different linear,radial and spherical flows.

关键词： Fast marching method Leaky faults Numerical well testing Complex fault structures Flow diagnostic

A numerical study for off-centered stagnation flow towards a rotating disc

在线全文

学校读者我要写书评

暂无评论

Propulsion and Power Research 2015年第3期4卷 169-178页

作者： m.Heydari G.B.Loghmani m.m.Rashidi s.m.hosseini Department of mathematics Yazd UniversityP.O.Box 89195-741YazdIran mechanical Engineering Department Engineering Faculty of Bu-Ali Sina UniversityHamedanIran Department of mathematics Khatam CenterIslamic Azad UniversityYazdIran

In this investigation,a semi-numerical method based on Bernstein polynomials for solving off-centered stagnation flow towards a rotating disc is *** method expands the desired solutions in terms of a set of Bernstein polynomials over a closed interval and then makes use of the tau method to determine the expansion coefficients to construct approximate *** method can satisfy boundary conditions at *** properties of Bernstein polynomials are presented and are utilized to reduce the solution of governing nonlinear equations and their associated boundary conditions to the solution of algebraic *** results are presented to investigate the influence of the rotation ratioαon the radial velocity,azimuthal velocity and the induced velocities.A comparative study with the previous results of viscous fluid flow in the literature is made.

关键词： Off-centered stagnation flow similarity transform Bernstein polynomials Function approximation Tau method

Piezoelectric study of 0.65Pb(mg_(1/3),Nb_(2/3))O_3-0.35PTO_3 Nanopoder Ceramics

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Electronic science and Technology of China 2010年第1期8卷 16-19页

作者： m.Ghasemifard s.m.hosseini H.Ghasemifard Department of Physics(materials and Electroceramics Laboratory) Ferdowsi University of MashhadMashhadIran Department of Engineering Islamic Azad University of MashhadMashhadIran

The piezoelectric properties of relaxor ferroelectric 0.65Pb（mg1/3,Nb2/3）O3-0.35PTO3 ceramic prepared by a sol-gel combustion method have been investigated as function of sintering temperature. The results show that its phase structure is near the morphoteropic phase boundary （mPB）, and outstanding electrical properties are obtained with this composition. The highest piezoelectric coefficients were observed for the samples sintered at temperature of 1200℃. In comparison with pure PmN （（1-x）Pb（mg1/3Nb2/3）O3- （x）PbTiO3）, the substitution of 35% PT results in the decrease of sintered temperature and improved the relaxation behavior.

关键词： Dielectric Gel-combustion piezo- electric PmN-PT.

Wettability modification effects on relative permeability end-points:Comparative analysis of surfactant agents for enhanced oil recovery

在线全文

学校读者我要写书评

暂无评论

Petroleum Research 2024年第2期9卷 206-218页

作者： Erfan hosseini Negar hosseini mohammad sarmadivaleh Exploration Directorate National Iranian Oil Company(NIOC)TehranIran Department of Petroleum Engineering Islamic Azad University(IAU)IlamIran WA school of mines:minerals Energy and Chemical EngineeringCurtin UniversityPerthWestern AustraliaAustralia

This research examines the impact of wettability alteration on the end points of relative permeability,a crucial property of fluids and porous media that influences the displacement processes of immiscible fluids through such *** estimation of the mobility ratio for oil recovery relies on these end points,which are influenced by connate water saturation and residual oil *** investigate this relationship,carbonate rock is generally subjected to wettability alteration using surfactant agents,and core flooding is employed to determine the relative permeability before and after the *** wettability of the rock is commonly assessed through contact angle *** surfactants,TritonX-100(Tx-100)and Cedar,were tested in reducing the wettability of the porous media for *** contact angle measurements revealed that Tx-100 was more effective for this purpose than ***,the relative permeability tests indicated that both surfactants decreased residual oil saturation,but Tx-100 also improved system *** contrast,Cedar reduced residual oil saturation but increased system pressure,possibly because of its high *** results also demonstrate that injecting Tx-100 leads to a 14%increase in ultimate oil recovery compared with water injection,while Cedar injection increased the recovery factor by 5%.This difference may be attributed to the incomplete coverage of the pore wall by Cedar or its weaker chemical structure than ***,in carbonate cores,neither non-ionic surfactant enhanced oil recovery.

关键词： Wettability alteration Relative permeability Core flooding Tx-100 Cedar Contact angle

Effect of thermal maturation and organic matter content on oil shale fracturing

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Coal science & Technology 2024年第2期11卷 16-34页

作者： Fatemeh saberi mahboubeh hosseini‑Barzi Department of Geology and Geological Engineering University of North Dakota264 Centennial DriveGrand ForksNDUSA Department of Geology and Petroleum Basins Shahid Beheshti University of TehranTehranTehran ProvinceIran

The Pabdeh Formation represents organic matter enrichment in some oil fields,which can be considered a source *** study is based on the Rock–Eval,Iatroscan,and electron microscopy imaging results before and after heating the *** discovered this immature shale that undergoes burial and diagenesis,in which organic matter is converted into *** migration is the process that transports hydrocarbons in the source *** investigated this phenomenon by developing a model that simulates hydrocarbon generation and fluid pressure during kerogen-to-hydrocarbon *** initially formed at the tip/edge of kerogen and were filled with hydrocarbons,but as catagenesis progressed,the pressure caused by the volume increase of kerogen decreased due to hydrocarbon *** transformation of solid kerogen into low-density bitumen/oil increased the pressure,leading to the development of damage zones in the source *** Pabdeh Formation’s small porethroats hindered effective expulsion,causing an increase in pore fluid pressure inside the initial *** stress accumulated due to hydrocarbon production,reaching the rock’s fracture strength,further contributed to damage zone *** the expansion process,microfractures preferentially grew in low-strength pathways such as lithology changes,laminae boundaries,and pre-existing *** the porous pressure created by each kerogen overlapped,individual microfractures interconnected,forming a network of microfractures within the source *** research sheds light on the complex interplay between temperature,hydrocarbon generation,and the development of expulsion fractures in the Pabdeh Formation,providing valuable insights for understanding and optimizing hydrocarbon extraction in similar geological settings.

关键词： Oil shale microfracture Hydrocarbon generation Organic matter Thermal maturation Primary migration

Developing a phenomenological model to simulate single and mixed scale formation during flow in porous media:Coupling a salt precipitation model with an ion transport equation under dynamic conditions

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Petroleum Research 2024年第1期9卷 17-36页

作者： Erfan hosseini Dana mohammad Nazar Negar hosseini mohammad sarmadivaleh Exploration Directorate National Iranian Oil Company(NIOC)TehranIran Institute of Physical Chemistry and Polymer Physics Leibniz Institute of Polymer Research DresdenDresdenGermany Department of Petroleum Engineering Islamic Azad University(IAU)IlamIran WA school of mines:minerals Energy and Chemical EngineeringCurtin UniversityPerthWestern AustraliaAustralia

Water flooding and pressure maintenance are recommended to improve oil recovery practices after low recovery of petroleum reservoirs occurs during primary *** crystal formation is a frequent occurrence when using these *** experimental,numerical,and theoretical studies have been done on the mechanisms underlying scaling and permeability reduction in porous media;however,there has not been a satisfactory model *** study developed a phenomenological model to predict formation damage caused by salt *** with existing models,which provide a scaling tendency,the proposed model predicts the profile of scale *** salt precipitation model simulates reactive fluid flow through porous media.A thermodynamic,kinetic,and flow hydrodynamic model was developed and coupled with the ion transport equation to describe the movement of ***,a set of carefully designed dynamic experiments were conducted and the data were compared with the model *** forecasts and experimental data were observed to have an average absolute error(AAE)ranging from 0.68%to 5.94%,which indicates the model's suitability.

关键词： Improved oil recovery Water flooding Formation damage scaling tendency salt precipitation

Two-dimensional mOF-based materials:Preparations and applications as electrodes in Li-ion batteries

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2024年第10期97卷 388-418页

作者： Narges Nobakht seyyed Ahmad Etghani mohammad hosseini seyed Hamed Aboutalebi Condensed matter National Laboratory Institute for Research in Fundamental Sciences Batt scout Company school of Biological sciences Institute for Research in Fundamental Sciences

Two-dimensional(2D) metal-organic frameworks(mOFs) are rapidly emerging as a unique class of mushrooming family of 2D materials offering distinctive features,such as hierarchical porosity,extensive surface area,easily available active sites,and versatile,adaptable *** promising characteristics have positioned them as highly appealing alternatives for a wide range of applications in energy storage technologies,including lithium ***,the poor conductivity and limited stability of 2D mOFs have limited their real applications in electrochemical energy *** limitations have therefore warranted ongoing research to enhance the performance of 2D *** the significance of 2D mOF-based materials as an emerging class of advanced materials,a multitude of strategy has been devised to address these challenges such as synthesizing 2D conductive mOFs and derivatives along with 2D mOF *** promising approach involves the use of 2D mOF derivatives,including transition metal oxides,which due to their abundant unsatu rated active metal sites and shorter diffusion paths,offer superior electrochemical ***,by combining pristine 2D mOFs with other materials,hybrid 2D mOF materials can be *** hybrids,with their enhanced stability and conductivity,can be directly utilized as active materials in lithium *** the present review,we categorize 2D mOF-based materials into three distinct groups:pristine 2D mOFs,2D mOFderived materials,and 2D mOF hybrid *** synthesis methods for each group,along with their specific applications as electrode materials in lithium-ion batteries,are discussed in *** comprehensive review provides insights into the potential of 2D mOFs while highlighting the opportunities and challenges that are present in this evolving field.

关键词： 2D materials 2D metal-organic frameworks Energy storage Li-ion batteries synthesis

multidisciplinary design optimization of a dual-spin guided vehicle

在线全文

学校读者我要写书评

暂无评论

Defence Technology（防务技术） 2024年第7期37卷 133-148页

作者： Jalal Karimi mohammad Reza Rajabi seyed Hossein sadati seyed mahid hosseini Department of Aerospace Engineering Malek Ashtar University of TechnologyTehranIran

In this research,a multidisciplinary Design Optimization approach is proposed for the dual-spin guided flying projectile design considering external and internal parts of the body as design *** this way,a parametric formulation is *** related disciplines,including structure,aerodynamics,guidance,and control are *** total mass,maximum aerodynamic control effectiveness,minimum miss distance,maximum yield stress in all subsystems,controllability and gyroscopic stability constraints are some of objectives/constraints taken into *** problem is formulated in All-At-Ones multidisciplinary Design Optimization approach structure and solved by simulated Annealing and minimax *** optimal configurations are evaluated in various *** resulted optimal configurations have met all design objectives and constraints.

关键词： Flying projectile optimal design All-at-ones multidisciplinary optimization structure discipline Guidance and control discipline Aerodynamic discipline

Hippo-YAP/TAZ signaling in breast cancer:Reciprocal regulation of microRNAs and implications in precision medicine

在线全文

学校读者我要写书评

暂无评论

Genes & Diseases 2024年第2期11卷 760-771页

作者： Farzad sadri seyede fatemeh hosseini Zohreh Rezaei mohammad Fereidouni student Research Committee Birjand University of Medical SciencesBirjand ***Iran Tabas school of Nursing Birjand University of Medical SciencesBirjand ***Iran Department of Biology University of Sistan and BaluchestanZahedan ***Iran Cellular and molecular Research Center Birjand University of Medical SciencesBirjand ***Iran

Breast cancer is a molecularly heterogeneous disease and the most common female *** recent years,therapy approaches have evolved to accommodate molecular diversity,with a focus on more biologically based therapies to minimize negative *** regulate cell fate in human breast cells,the Hippo signaling pathway has been associated with the alpha subtype of estrogen *** pathway regulates tissue size,regeneration,and healing,as well as the survival of tissue-specific stem cells,proliferation,and apoptosis in a variety of organs,allowing for cell *** signaling is mediated by the kinases msT1,msT2,LATs1,and LATs2,as well as the adaptor proteins sAV1 and *** kinases phosphorylate the downstream effectors of the Hippo pathway,yes-associated protein(YAP),and transcriptional coactivator with PDZ-binding motif(TAZ),suppressing the expression of their downstream target *** Hippo signaling pathway kinase cascade plays a significant role in all *** the principles of this kinase cascade would prevent the occurrence of breast *** recent years,small noncoding RNAs,or microRNAs,have been implicated in the development of several malignancies,including breast *** interconnections between miRNAs and Hippo signaling pathway core proteins in the breast,on the other hand,remain poorly *** this review,we focused on highlighting the Hippo signaling system,its key parts,its importance in breast cancer,and its regulation by miRNAs and other related pathways.

关键词： Breast cancer Hippo signaling Large tumor suppressor kinase 1 microRNAs PDZ-binding motif Yes-associated protein