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A review on the rheology of heavy crude oil for pipeline transportation

Petroleum Research 2021年第2期6卷 116-136页

作者： Farid Souas Abdelhamid Safri abdelbaki benmounah LEGHYD Laboratory Faculty of Civil EngineeringUniversity of Science and Technology Houari Boumediene(USTHB)Bab EzzouarAlgerAlgeria Research Unit Materials Processes and Environment(UR-MPE)Faculty of Engineering ScienceUniversity M’Hamed BougaraBoumerdesAlgeria

Given the combination of rising global energy demand and the decline in conventional crudes, heavycrudes are generally considered to be the future energy resource. In many regions of the world, heavycrude oil must be transported through pipelines from the point of production to storage facilities orrefineries. The transportation of heavy crude oil by pipeline poses serious problems related to the highviscosity and flow difficulties, particularly in cold climates or offshore conditions. Indeed, the viscosity ofcrude oil is an important physical property that influences and controls crude oil flow in *** introduces resistance to movement by causing a shear or frictional force between the fluidparticles and the boundary walls. This high viscosity means that the pumping power requirements forcrude oil in a long-distance pipeline are very high in order to overcome the increasing shear and frictionforces. Therefore, in order to facilitate the pumping of these viscous oils and reduce operating expensesand the negative impact of pressure drops in pipelines during flow and processing, their viscosity mustbe reduced. Various techniques are used to increase pumping efficiency and improve the flow of crude oilthrough the pipeline, which may present logistical, technical or economic disadvantages for a givenapplication. The main ones are the addition of surfactants or polymers, dilution with lighter crudes, useof water as annular fluid, thermal remediation and emulsification with surfactant (O/W). This reviewhighlights the methods currently used to enhance the fluidity of heavy crude oil in pipelines behindrheology improvement, in particular the addition of additives and the use of water and surfactants tocreate a stable emulsion of heavy crude oil in water have been considered.

关键词： Additives Emulsion Heavy crude oil Rheology Viscosity

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Nomograms and prognosis for superficial esophageal squamous cell carcinoma

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World Journal of Gastroenterology 2024年第10期30卷 1291-1294页

作者： Hong Tao Lin Ahmed abdelbaki Somashekar G Krishna Department of Internal Medicine Division of GastroenterologyHepatology and NutritionThe Ohio State University Wexner Medical CenterColumbusOH 43210United States

In recent years,endoscopic resection,particularly endoscopic submucosal dis-section,has become increasingly popular in treating non-metastatic superficial esophageal squamous cell carcinoma(ESCC).In this evolving paradigm,it is crucial to identify factors that predict higher rates of lymphatic invasion and poorer *** tumor size,deeper invasion,poorer differentiation,more infiltrative growth patterns(INF-c),higher-grade tumor budding,positive lymphovascular invasion,and certain biomarkers have been associated with lymph node metastasis and increased morbidity through retrospective reviews,leading to the construction of comprehensive nomograms for outcome *** validated by future prospective studies,these nomograms would prove highly applicable in guiding the selection of treatment for superficial ESCC.

关键词： Esophageal cancer Esophageal squamous cell carcinoma Esophageal resection Endoscopic mucosal resection Endoscopic submucosal dissection Lymph node metastasis

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Influence of the Crystal Growth Temperature on the Formation of Zr Reach Crystalline Phases in a Nuclear Waste Confinement Glass Ceramic

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材料科学与工程（中英文B版） 2014年第8期4卷 220-225页

作者： Dalila Moudir Nour-el-hayet Kamel abdelbaki benmounah Yasmina Mouheb Rafika Souag Boudjmaa Bezzazi Fairouz Aouchiche Ziane Kamel Soumia Kamariz Algiers Nuclear Research Centre Division of Nuclear Techniques P.O.Box: 399 Alger-RP Algiers Algeria Research Unit on Materials Processes and Environment (URMPE) University M'hamed Bouguerra Avenue de l 'ind~pendance35000 Boumerdks Algeria

Many glass ceramics are potential candidates for the confinement of radioactive waste. This is the case of glasses embedding radiation-resistant ceramics as zirconolites, pyrochlores or pyroxenes. This study deals with the influence of the crystal growth temperature on the formation of such phases in a nuclear glass ceramic in the system: Al2O3-SiO2-CaO-MgO-ZrO2-TiO2. The materials with six contents of ZrO2, ranging from 1.00 to 6.40 m.%, are synthesized by a discontinuous method, consisting in a double-melting at 1,350 °C, followed by both a nucleation at 564 °C, and a crystal growth treatment at: 900, 100 and 1,100 °C. For the whole of the materials, the morphology reveals a glassy feature, with a opaque aspect. One can also evidence a different crystallization process from the bulk to the surface. The glass ceramics X-ray diffraction analysis (XRD) show that the main identified crystalline skeletons are those of: 2M-zirconolite, CaZrTi2O7 and ZrO2, depending on the content of ZrO2 in materials and the crystal-growth temperature. The material with the middle content in ZrO2 (4.5 m.%) and crystallized at the middle value of Tc (1,010 °C) show the greatest content in zirconolite (87 %), doped with either lanthanides or alcalin-earth elements, due to the complexity of the mixture of oxides. The temperature of 1,010 ° C appears to be more selective with regard to the formation of the 2M-zirconolite.

关键词：玻璃陶瓷生长温度晶体生长结晶相锆石 Al2O3-SiO2 核废料 X射线衍射分析

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Community Detection Applications in Mobile Networks:Towards Data-Driven Design for Next Generation Cellular Networks

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Journal of Communications and Information Networks 2023年第2期8卷 155-163页

作者： Ayman Gaber Nashwa abdelbaki Tamer Arafa School of Information Technology and Computer Science Nile UniversityGiza 12677Egypt

The existing radio access network(RAN)is facing many challenges to meet the very strict speed and latency requirements by different mobile applications in addition to the increasing pressure to reduce operating *** and development in RAN have been accelerated to tackle these challenges and to define how next generation mobile networks should look *** role of machine learning(ML)and artificial intelligence(AI)driven innovations within the RAN domain is strengthening and attracting lots of attention to tackle many of the challenging *** this paper we surveyed RAN network base stations(BSs)clustering and its applications in the *** paper also demonstrates how to leverage community detection algorithms to understand underlying community structures within *** areas(TAs)novel framework was developed by adapting existing community detection algorithm to solve the problem of statically partitioning a set of BSs into TA according to mobility ***,live network dataset in dense urban part of Cairo is used to assess how the developed framework is used to partition this part of the network more efficiently compared to other clustering *** obtained showed that the new methodology saved up to 34.6%of inter TA signaling overhead and surpassing other conventional clustering algorithms.

关键词： RAN mobility optimization RAN intelligence community detection ML

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Direct fractional order MRAC adaptive control design for a class of fractional order commensurate linear systems

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Journal of Control and Decision 2021年第3期8卷 363-371页

作者： Hanane Balaska Samir Ladaci abdelbaki Djouambi Department of Electrical Engineering LGEA LaboratoryUniversity of Oum El BouaghiOum El BouaghiAlgeria Department of E.E.A. National Polytechnic School of ConstantineConstantineAlgeria SP-LAB Signal Processing Laboratory UMC1 UniversityConstantineAlgeria

In this paper,we introduce a direct fractional order adaptive control design based on model reference adaptive control(MRAC)structure for a class of commensurate fractional order linear systems with an arbitrary relative degree,and whose parameters are *** generalising the application of standard direct MRAC strategy to plants described by fractional order models,we develop a fractional adaptive control scheme(FOMRAC)based on the output *** also define an adaptation control law ensuring the stability of the closed-loop system and the good tracking of the reference *** asymptotic stability of the fractional order control system is proven using an extension of the Lyapunov *** results show the effectiveness of the proposed control method even for plants with model parametric variations and additive noises.

关键词： Fractional order linear commensurate system direct model reference adaptive control fractional adaptive control direct FOMRAC Lyapunov stability

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Coupled Conductive-Convective-Radiative Heat Transfer in Hollow Blocks with Two Air Cells in the Vertical Direction Subjected to an Incident Solar Flux

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Fluid Dynamics & Materials Processing 2022年第5期18卷 1399-1407页

作者： Mourad Najjaoui Thami Ait-taleb Abdelhalim abdelbaki Zaki Zrikem Hassan Chaib Polydiscilinary Faculty of Ouarzazate Ibn Zohr UniversityOuarzazateMorocco Faculty of Sciences Semlalia Cadi Ayyad UniversityMarrakeshMorocco

This work presents the results of a set of steady-state numerical simulations about heat transfer in hollow blocks in the presence of coupled natural convection,conduction and *** with two air cells deep in the vertical direction and three identical cavities in the horizontal direction are considered(typically used for building ceilings).Moreover,their outside horizontal surface is subjected to an incident solar flux and outdoor environment temperature while the inside surface is exposed to typical indoor environment *** flows are considered laminar and two-dimensional over the whole range of parameters *** conservation equations are solved by means of a finite difference method based on the control volumes approach,relying on the SIMPLE algorithm for what concerns the coupling of pressure and *** effects of the number of cells in the horizontal direction and the thermal conductivity on the heat transfer through the alveolar structure have been *** results show that the number of holes has a significant impact on the value of the overall heat flux through the considered structure.

关键词： Numerical simulation heat transfer coupled hollow concrete block control volumes approach

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Simultaneous removal of Congo red and cadmium(Ⅱ) from aqueous solutions using graphene oxide–silica composite as a multifunctional adsorbent

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Journal of Environmental Sciences 2020年第12期32卷 151-160页

作者： Ebrahim Mahmoudi Sepehr Azizkhani Abdul Wahab Mohammad Law Yong Ng abdelbaki Benamor Wei Lun Ang Muneer Ba-Abbad Department of Chemical and Process Engineering Faculty of Engineering and Built EnvironmentUniversiti Kebangsaan Malaysia43600 BangiSelangor Darul EhsanMalaysia Department of Chemical and Environmental Engineering Faculty of EngineeringUniversiti Putra Malaysia43400 SerdangSelangorMalaysia Department of Chemical Engineering Lee Kong Chian Faculty of Engineering and ScienceUniversiti Tunku Abdul RahmanJalan Sungai LongBandar Sungai LongCheras43000 KajangSelangorMalaysia Centre for Sustainable Process Technology(CESPRO) Faculty of Engineering and Built EnvironmentUniversiti Kebangsaan Malaysia43600 BangiSelangor Darul EhsanMalaysia Gas Processing Centre Qatar UniversityP.O.Box 2713DohaQatar

Graphene oxide is a very high capacity adsorbent due to its functional groups and π-π interactions with other compounds. Adsorption capacity of graphene oxide, however, can be further enhanced by having synergistic effects through the use of mixed-matrix composite. In this study, silica-decorated graphene oxide(SGO) was used as a high-efficiency adsorbent to remove Congo red(CR) and Cadmium(Ⅱ) from aqueous solutions. The effects of solution initial concentration(20 to 120 mg/l), solution pH(pH 2 to 7), adsorption duration(0 to 140 min) and temperature(298 to 323 K) were measured in order to optimize the adsorption conditions using the SGO adsorbent. Morphological analysis indicated that the silica nanoparticles could be dispersed uniformly on the graphene oxide surfaces. The maximum capacities of adsorbent for effective removal of Cd(Ⅱ) and CR were 43.45 and 333.33 mg/g based on Freundlich and Langmuir isotherms, respectively. Langmuir and Freundlich isotherms displayed the highest values of Q max for CR and Cd(Ⅱ) adsorption in this study, which indicated monolayer adsorption of CR and multilayer adsorption of Cd(II) onto the SGO, respectively. Thermodynamic study showed that the enthalpy( H) and Gibbs free energy( G) values of the adsorption process for both pollutants were negative, suggesting that the process was spontaneous and exothermic in nature. This study showed active sites of SGO( π-π, hydroxyl, carboxyl, ketone, silane-based functional groups) contributed to an enormous enhancement in simultaneous removal of CR and Cd(Ⅱ) from an aqueous solu-tion, Therefore, SGO can be considered as a promising adsorbent for future water pollution control and removal of hazardous materials from aqueous solutions.

关键词： Graphene-oxide Multifunctional adsorbent Competitive removal Heavy metal-dye removal

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Effect of Hole Configuration on Heat Transfer through a Hollow Block Subjected to Solar Flux

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Fluid Dynamics & Materials Processing 2022年第5期18卷 1339-1348页

作者： Mourad Najjaoui Thami Ait-Taleb Abdelhalim abdelbaki Zaki Zrikem Hassan Chaib Polydiscilinary Faculty of Ouarzazate Ibn Zohr UniversityOuarzazate638Morocco Faculty of Sciences Semlalia Cadi Ayyad UniversityMarrakesh2390Morocco

In this paper,some effort is provided to optimize the geometry of a concrete hollow brick(used in the construction of building roofs)in order to increase the related thermal resistance,thereby reducing energy *** analysis is conducted for three different configurations of the hollow concrete *** of conduction,natural convection and thermal radiation phenomena is ***,the flows are assumed to be laminar and two-dimensional for the whole range of parameters *** conservation equations are solved by a finite difference method based on the control volumes approach and the SIMPLE algorithm for velocity-pressure *** results show that the aspect ratio affects neither the nature of the fluid flow nor the number of convective ***,the extension of the circulation cells increases with this ***,the cavities with a large aspect ratio lead to significant reductions in the heat transfer through the hollow block,these reductions reaching approximately 14%.

关键词： Heat transfers coupled hollow block solar flux aspect ratio control volumes

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Advancement and new perspectives of using formulated reactive amine blends for post-combustion carbon dioxide (CO_(2)) capture technologies

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Petroleum 2017年第1期3卷 10-36页

作者： Chikezie Nwaoha Teeradet Supap Raphael Idem Chintana Saiwan Paitoon Tontiwachwuthikul Mohammed JAL-Marri abdelbaki Benamor Clean Energy Technologies Research Institute(CETRI) Faculty of Engineering and Applied ScienceUniversity of ReginaSKS4S 0A2Canada The Petroleum and Petrochemical College Chulalongkorn UniversityBangkok10330Thailand Gas Processing Center Qatar UniversityDohaQatar

Chemical absorption using amine-based solvents have proven to be the most studied,as well as the most reliable and efficient technology for capturing carbon dioxide(CO_(2))from exhaust gas streams and synthesis gas in all combustion and industrial *** application of single amine-based solvents especially the very reactive monoethanolamine(MEA)is associated with a parasitic energy demand for solvent *** regeneration energy accounts for up to threeequarters of the plant operating cost,efforts in its reduction have prompted the idea of using blended amine *** review paper highlights the success achieved in blending amine solvents and the recent and future technologies aimed at increasing the overall volumetric mass transfer coefficient,absorption rate,cyclic capacity and greatly minimizing both degradation and the energy for solvent *** importance of amine biodegradability(BOD)and low ecotoxicity as well as low amine volatility is also *** and energy penalty indices that influences the capital and operating costs of CO_(2) capture process was also highlighted.A new experimental method for simultaneously estimating amine cost,degradation rate,regeneration energy and reclaiming energy is also proposed in this review paper.

关键词： Post-combustion Pre-combustion Oxy-fuel combustion CO_(2)capture Blended amines Regeneration energy Degradation Amine volatility Biodegradability Ecotoxicity Amine cost Reclaiming energy

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Performance Analysis of the Flywheel Assembly Design Using SolidWorks Modeling and Simulation Capabilities

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Smart Grid and Renewable Energy 2022年第5期13卷 109-119页

作者： abdelbaki Abdallah Seif Eddine Bendaoudi Houcine Naim Samir Habibi Laboratory of Industrial Engineering and Sustainable Development Mechanical Department University of Relizane Relizane Algeria

The flywheel energy storage system (FESS) has been rediscovered a few years ago, it is a rotary system allowing the storage and restoration of kinetic energy which has an inertia wheel. The current paper investigates an assembly design of the flywheel for durable, maintainable and optimal performance. The designed model is based on a geometrical configuration which was already studied in a previous research. Using SolidWorks modelling and simulation capabilities, the model was designed and investigated with different combination of materials. A total of 16 combinations has been tested at high speed and then analyzed in order to optimize the effect of materials on the efficiency of the flywheel and particularly on the specific energy and stress Von-Mises stress. This research shows that a good geometric design of the flywheel and selection of combination of two materials can improve its energy storage capacity. Maximum specific energy of 55,764.538 J/Kg, is observed in the flywheel of combined material which is about 13% higher than flywheel of a single material.

关键词： Flywheel Simulation Modelling Energy Storage High Mechanical Strength

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