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Performance Of Potato Starch Admixture On Fresh And Hardened Behaviours Of Concrete At Varied Mix Design Ratios, Chidobere Nwa-David Mar 2026

Performance Of Potato Starch Admixture On Fresh And Hardened Behaviours Of Concrete At Varied Mix Design Ratios, Chidobere Nwa-David

Engineering and Technology Journal

The urgency to attenuate techno-economic and ecological threats constituted by chemical admixtures has necessitated the adoption of feasible natural admixtures. The chemical interaction of admixtures with concrete ingredients affects concrete's plastic and hardened structure. The impact of concrete properties on construction works is of great concern to engineers as it plays a vital role towards viable infrastructural development. This study focused on developing an eco-friendly, sustainable structural concrete using potato starch (PS) as an admixture. PS has been included to in concrete in discrete percentages (0%, 0.4%, 0.8%, 1.2%, 1.6%, 2.0%) of cement weight employing mix ratios of 1: 1.5: …

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Drought Forecasting Model For Future Climate Change Effects In A Regional Catchment Area In Northern Iraq, Nasser Muhaisen, Thair Khayyun, Mustafa Al-Mukhtar Mar 2026

Drought Forecasting Model For Future Climate Change Effects In A Regional Catchment Area In Northern Iraq, Nasser Muhaisen, Thair Khayyun, Mustafa Al-Mukhtar

Engineering and Technology Journal

Climate change plays a crucial role in shaping the hydrological dynamics of rivers owing to its immediate implications on the driving meteorological parameters. Therefore, Understanding climate change and its implications is essential for sustainable water resource management. This study aims to assess the extent of climate change and its effects on streamflow in the Mosul Dam watershed Under three global warming Representative Concentration Pathways scenarios (i.e., 2.6, 4.5, and 8.5) based on mean climate data extracted from four Global Circulation Models (i.e., Beijing Climate Center, China, Commonwealth Scientific and Industrial Research Organization, Australia, Met Office Hadley Center, United Kingdom, and …

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Strain Capacity And Flexural Strength Behavior Of Bendable Concrete Produced With Different Polymeric Fibers, Ikram Al-Mulla, Tareq Al-Attar, Abbas Al-Ameeri, Ammar Al-Rihimy Mar 2026

Strain Capacity And Flexural Strength Behavior Of Bendable Concrete Produced With Different Polymeric Fibers, Ikram Al-Mulla, Tareq Al-Attar, Abbas Al-Ameeri, Ammar Al-Rihimy

Engineering and Technology Journal

The incorporation of fibers into engineered cementitious composite concrete imparts flexibility to the material. Therefore, using different types and contents of polymeric fibers would affect the behavior of such concrete types, and it is worth contemplating. The present research aims to study the flexural strength and the strain capacity of engineered cementitious composite concrete produced with polyvinyl alcohol fibers (PVA) and polypropylene fibers (PP) with different volume fractions (1%, 1.5%, and 2%). Six mixes of engineered cementitious composite concrete of three grades of strengths, 30, 45, and 60 MPa, were produced. Results revealed that mixes of 60 MPa with 2% …

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Life Cycle Economic Comparison Between Rigid And Flexible Pavement: A Case Study For The Construction Of Wajen- Garin Barkamawa-Dugurawa Road In Kano State Nigeria, Rowland Adewumi, Wasiu Sulaiman, Adeniyi Shola Mar 2026

Life Cycle Economic Comparison Between Rigid And Flexible Pavement: A Case Study For The Construction Of Wajen- Garin Barkamawa-Dugurawa Road In Kano State Nigeria, Rowland Adewumi, Wasiu Sulaiman, Adeniyi Shola

Engineering and Technology Journal

Flexible pavements may be strengthened and enhanced incrementally to meet traffic needs, making them preferable to cement concrete roadways. Due to the rise of poor-quality bituminous pavements, Nigeria is promoting concrete pavements. Concrete pavements are becoming more popular because of their durability and ability to withstand heavy traffic and harsh environmental conditions. The primary objective of this study is to provide a comprehensive comparative analysis of both flexible and rigid pavement suitability, considering various parameters such as material characteristics, load-bearing capacity, longevity, and cost-effectiveness. The pavement structure used for the project meets the Federal Ministry of Works Highway Manual Part …

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Manufacturing Of Sustainable Ultra-High-Performance Concrete Using Response Surface Methods, Abbas Mohammed, Maan Hassan, Hussein Al-Quraishi Mar 2026

Manufacturing Of Sustainable Ultra-High-Performance Concrete Using Response Surface Methods, Abbas Mohammed, Maan Hassan, Hussein Al-Quraishi

Engineering and Technology Journal

Quartz powder is used in ultra-high-performance concrete to improve granular packing, but repeated inhalation during manufacture can cause health issues. The mechanical properties of UHPC are influenced by the post-setting curing method. A hypothesis suggests limestone powder could be a viable filler to mitigate these issues under three different curing regimes, replacing quartz powder of similar size. The study assessed 18 mixtures with different w/b ratios for flow characteristics and compressive strength after 7 and 28 days of curing under various conditions. Limestone powder positively impacted compressive strength and had fresh properties. A two-factor interaction model accurately correlated variables and …

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Effect Of Structure Height On Seismic Response Of Adjacent Structures Considering Soil-Structure Interaction, Mohammed Abdulaziz, Mohammed Hamood, Mohammed Fattah Mar 2026

Effect Of Structure Height On Seismic Response Of Adjacent Structures Considering Soil-Structure Interaction, Mohammed Abdulaziz, Mohammed Hamood, Mohammed Fattah

Engineering and Technology Journal

Seismic activity has emerged as a mostly attractive issue for researchers and engineers, particularly in light of the recent occurrence of severe earthquakes worldwide, such as those felt in Turkey and Syria. Most entities prone to seismic damage are the structures. Any type of structure consists of a composite system involving structure, foundation, and soil. Previously, numerical and analytical methods for dynamic seismic analysis of structures ignored the impact of this system during earthquakes. In other words, soil-structure interaction (SSI) was ignored. Moreover, another important factor that was not considered is the interaction between structures and soil, or what is …

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Modifying The Strength Of Soft Soils Via Heating And Cement Grouting Method, Ali Shareef, Mohammed Al- Neami, Falah Rahil Mar 2026

Modifying The Strength Of Soft Soils Via Heating And Cement Grouting Method, Ali Shareef, Mohammed Al- Neami, Falah Rahil

Engineering and Technology Journal

Soft clayey soils present geotechnical engineering challenges with significant stability and settlement. Various methods are employed to enhance the geotechnical properties of these soils. Heating and grouting are the methods used to improve such soil. A new heating and cement grouting system using gas as a source of heating through boreholes and Portland cement for grouting was designed and manufactured to enhance the soft soil. Different parameters were investigated, including the shear strength and the angle of internal friction, as well as the water/cement ratio, W/C (0.5, 0.75, 1, 1.25, 1.5, and 1.75), and the period of curing (3, 14, …

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Torsional Strength Of Horizontally Curved Continuous Reinforced Concrete Box Girder Bridges, Asala Dawood, Khattab Abdul-Razzaq, Wael Abdulsahib Mar 2026

Torsional Strength Of Horizontally Curved Continuous Reinforced Concrete Box Girder Bridges, Asala Dawood, Khattab Abdul-Razzaq, Wael Abdulsahib

Engineering and Technology Journal

The horizontally curved box girder bridges are considered important nowadays because of their low cost compared to the load capacity and torsion moments that they can carry. This study presents a finite element analysis of a continuous box girder bridge using CSI finite element bridge software. Three spans with 40 m length, 12.5 m width, and 2.3 m height are studied. The analysis included different radii of curvature with different loading locations along the transverse direction of a cross-section. Several conclusions were reached, the most important of which is that the torsional moments in the outer face are superior to …

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Solving Westergaard Half-Space Problems Using Potential Theory, Charles Ike Mar 2026

Solving Westergaard Half-Space Problems Using Potential Theory, Charles Ike

Engineering and Technology Journal

The Westergaard half-space problem has been solved using the potential theory in this work. It is a classical theme in elasticity theory that seeks to find the displacements and stresses in the half-space caused by known boundary loads. It has important applications in analyzing stresses and displacement fields in soil due to applied points and distributed loads on the boundary caused by structures placed on the soil. It is governed by stress–strain, strain-displacement, and equilibrium equations. Horizontal inextensibility is assumed in developing the problem, simplifying the displacement formulation to a three-dimensional (3D) Laplace equation. The potential theory is applied to …

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Evaluation Of The Synergistic Effects Of Synthesized Silver Nanoparticles Conjugated Tetracycline, Nehia Hussein, Zahraa Zghair, Ruqaya Hussein, Alaa Hameed, Amna Abdul-Jabbar, Buthenia Hasoon, Hamdoon Mohammed, Ghassan Sulaiman Mar 2026

Evaluation Of The Synergistic Effects Of Synthesized Silver Nanoparticles Conjugated Tetracycline, Nehia Hussein, Zahraa Zghair, Ruqaya Hussein, Alaa Hameed, Amna Abdul-Jabbar, Buthenia Hasoon, Hamdoon Mohammed, Ghassan Sulaiman

Engineering and Technology Journal

The antibiotic impacts of classical drugs against bacteria could be enhanced via the conjugation of silver nanoparticles. After the successful coating of silver nanoparticles (AgNPs) with Tetracycline, the characterization of the conjugate properties was achieved through measurements with scanning electron microscopy (SEM) coupled to an energy-dispersive X-ray analyzer (EDX). The SEM analysis shows the appearance of silver nanoparticles with an average particle size of 22.82 nm and a cubic shape. Meanwhile, the EDX spectrum of silver NPs exhibits peaks corresponding to elemental silver. The anti-bacterial activity of pure Tetracycline and tetracycline-AgNP conjugates was examined against ten isolates of Pseudomonas aeruginosa. …

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Recycling Of Waste Papers: Yield And Quality Of The Ash-Derived Materials, Ubong Robert, Sunday Etuk, Okechukwu Agbasi, Prosperity Ambrose, Rowland Adewumi Mar 2026

Recycling Of Waste Papers: Yield And Quality Of The Ash-Derived Materials, Ubong Robert, Sunday Etuk, Okechukwu Agbasi, Prosperity Ambrose, Rowland Adewumi

Engineering and Technology Journal

This research was designed to assess the yield and quality of ash prepared from different types of waste papers. Waste newspapers, writing papers, and cartons were selected for combustion to obtain the ashes and coded as WNPA, WWPA, and WCPA, respectively. The waste papers were incinerated simultaneously in separate but identical incinerators at 850 ℃. An experiment on the yield of the ashes was performed on two days before the ashes obtained were mixed based on the type of waste papers from which they were derived. The results showed that irrespective of the day and time, the WCPA was the …

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Blockchain-Based E-Government System Using Websocket Protocol, Zainab Kamal, Rana Ghani, Alaa Farhan Mar 2026

Blockchain-Based E-Government System Using Websocket Protocol, Zainab Kamal, Rana Ghani, Alaa Farhan

Engineering and Technology Journal

This paper explores the Integration of Blockchain technology and WebSocket protocol to implement E-government system. Blockchain is used to record the correspondence between users and the government while WebSocket is used for the communication among the distributed nodes of the blockchain network. This system leverages the inherent security and transparency of blockchain in addition to the real-time communication capabilities of WebSocket, which elevate the performance of the delivered services by the government. In this paper, the users can submit transactions and track it in a way that allows them to follow up on all actions taken on their transactions. Information …

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Effect Of The Stochastic Weibull Parameters On The Reliability Of The Dialysis Machine, Sofiene Fenina, Souheyl Jendoubi, Faker Bouchoucha Mar 2026

Effect Of The Stochastic Weibull Parameters On The Reliability Of The Dialysis Machine, Sofiene Fenina, Souheyl Jendoubi, Faker Bouchoucha

Engineering and Technology Journal

Dialysis machines operate in an uncertain environment with several sources of disturbances; therefore, it is necessary to take account of the uncertainties during all their life phases. This paper presents a study of the random reliability of the dialysis machine in a stochastic environment through the two-parameter for Weibull distribution. The shape and scale parameters were estimated through analytical and graphical methods based on the failure history of the devices. The formulation of the analytical methods and their exploitation using numerical simulations was one of the objectives of this work. The uncertainties in the stochastic environment of the machines are …

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Influence Of Oil Palm Mesocarp Fiber On Physical Properties Of Fabricated Plaster Of Paris Ceilings, Armstrong Anonaba, Francis Eze, Israel Ndukwe Mar 2026

Influence Of Oil Palm Mesocarp Fiber On Physical Properties Of Fabricated Plaster Of Paris Ceilings, Armstrong Anonaba, Francis Eze, Israel Ndukwe

Engineering and Technology Journal

This study was designed to investigate how some important physical properties of Plaster of Paris (POP) ceilings are affected by the utilization of untreated oil palm mesocarp fiber (UOPMF) and treated oil palm mesocarp fiber (TOPMF) as a modifier. Both fibers were utilized separately at various weight proportions (0, 10, 20, 30, and 40%) to fabricate the ceiling samples. The samples were dried completely and then tested for water absorption, porosity, bulk density, thermal conductivity, specific heat capacity, thermal diffusivity, heat flow time, and flakiness. All the samples could improve thermal insulation performance better than conventional ceilings like asbestos and …

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Assessment Of Properties Of Composite Boards From Groundnut Shells And Sawdust For Their Suitability For Structural Applications, Ekong Nathaniel, Nsikak Ekpenyong, Casmir Zanders Akaolisa, Okwet Yawo, Grace Umoren, Samuel Akpan Mar 2026

Assessment Of Properties Of Composite Boards From Groundnut Shells And Sawdust For Their Suitability For Structural Applications, Ekong Nathaniel, Nsikak Ekpenyong, Casmir Zanders Akaolisa, Okwet Yawo, Grace Umoren, Samuel Akpan

Engineering and Technology Journal

Groundnut shells and sawdust are generated in vast quantities yearly but under-utilized. In developing countries, this situation leads to their disposal by unplanned landfilling, indiscriminate dumping, or open burning as ineffective solid waste management systems persist. Such practices constitute severe environmental problems that need to be urgently tackled. In this work, composite boards were fabricated from groundnut shell particles (GSP) and sawdust particles (SDP) at varying volumetric proportions of 0%, 25%, 50%, 75%, and 100 % using Topbond as a binding agent. The boards were dried completely and then assessed for water absorption, bulk density, thermal conductivity, specific heat capacity, …

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An Empirical Investigation And Computational Modeling Of Volatile Organic Compound (Vocs) Elimination From Aqueous Solutions By Means Of Pervaporation, Salam Rasheed, Salah Ibrahim, Asmaa Abbas, Raed Al-Jaboori, Zeinab Jawad, Low Chun, Qusay Alsalhy Mar 2026

An Empirical Investigation And Computational Modeling Of Volatile Organic Compound (Vocs) Elimination From Aqueous Solutions By Means Of Pervaporation, Salam Rasheed, Salah Ibrahim, Asmaa Abbas, Raed Al-Jaboori, Zeinab Jawad, Low Chun, Qusay Alsalhy

Engineering and Technology Journal

The present study harnessed a commercially available polydimethylsiloxane (PDMSTM4060) membrane designed for the selective separation of soluble benzene (C6H6) and toluene (C7H8) compounds from an aqueous solution employing pervaporation (PV). Two distinct mathematical models, namely the universal quasi-chemical (UNIQUAC) model and the conventional driving force model, were formulated to replicate the intricate transport mechanisms of both organic solvent and water across these membranes. These models were instrumental in projecting the membrane's performance across diverse operational scenarios. The anticipated results were rigorously compared with experimental data to validate the projected outcomes for non-ideal volatile organic compounds (VOCs)-water systems within the membrane. …

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Carbon Fiber Cloth Performance Improvement Via Hybrid Materials (Fe2o3, Feco2o4, And Conducting Polymer) Addition For Energy Storage Applications, Abeer Radhi, Sami Jafar Al-Rubaiey, Shaymaa Al-Rubaye Mar 2026

Carbon Fiber Cloth Performance Improvement Via Hybrid Materials (Fe2o3, Feco2o4, And Conducting Polymer) Addition For Energy Storage Applications, Abeer Radhi, Sami Jafar Al-Rubaiey, Shaymaa Al-Rubaye

Engineering and Technology Journal

Carbon fiber cloths (CFCs) are essential materials extensively studied and utilized in numerous applications, including supercapacitors (SCs), batteries, solar cells, and catalysis. CFC is gaining significant research attention as an inexpensive choice for (SC) electrode materials, mainly owing to its peculiar adaptability, which makes it suitable for conveyable or flexible devices. In fact, this characteristic is not easily attainable with other carbon-based matrices. However, bare CFC electrodes face difficulties concerning their capacitive performance because of numerous factors, including markedly little surface space, poor electrochemical efficacy, and limited porousness. In this way, these factors reduce their efficiency as supercapacitor electrodes. To …

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Investigating The Effect Of Various Parameters On The Yield Of Graphene Obtained Through Graphite Exfoliation Using Co2 Supercritical Fluid, Shahab Saeedi, Javad Sargolzaei Mar 2026

Investigating The Effect Of Various Parameters On The Yield Of Graphene Obtained Through Graphite Exfoliation Using Co2 Supercritical Fluid, Shahab Saeedi, Javad Sargolzaei

Engineering and Technology Journal

Due to its high penetration force and low viscosity, the Supercritical carbon dioxide (scCO2) can spread between the graphite layers, overcome van der Waals forces, and transform graphite into multilayer graphene. The results of the test plan with the Design Expert software and also the use of these results in the laboratory showed that the parameters of temperature, pressure, initial amount of graphite, addition of surfactant and solvent auxiliary, the duration of sample placement in the device, the duration of carbon dioxide gas release from the device, and the time and power of ultrasonic and centrifuge operations can accelerate the …

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A Review On Alginate-Nanoparticle As A Potential Tool For Managing Water Pollution, D. Lakshmi, K. Radha, Thahira Azeez, Shanmugam Munisamy Mar 2026

A Review On Alginate-Nanoparticle As A Potential Tool For Managing Water Pollution, D. Lakshmi, K. Radha, Thahira Azeez, Shanmugam Munisamy

Engineering and Technology Journal

Sustainable source-based hydrogels are now paid much importance for managing water pollution due to their distinctive chemical and physical properties like hydrophilicity, biocompatibility, viscoelasticity, superabsorbancy, softness, fluffiness, and biodegradability. Alginate-based hydrogels can incorporate much water due to their hydrophilic nature.Water pollution often changes groundwater, resulting in the inability to use it. Alginate-based gels remove pollutants through adsorption/desorption, transport, and other conventional techniques. Alginate-based hydrogels can incorporate much water due to their hydrophilic nature. Their composites have been demonstrated to control different water pollutants like inorganic, organic, and pathogenic microbes from various water streams in unique structural forms like a flat …

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Impact Of The Upfc On The Optimal Transmission Switching For Cutting Down Market Power Cost, Sunday Adetona, Makanjuola Adetola, Frank Okafor, Nwabueze Ubakanwa Mar 2026

Impact Of The Upfc On The Optimal Transmission Switching For Cutting Down Market Power Cost, Sunday Adetona, Makanjuola Adetola, Frank Okafor, Nwabueze Ubakanwa

Engineering and Technology Journal

The exercise of market power by the strategic generating companies (gencos) in the deregulated wholesale electricity market (WEM) should be mitigated, as it results in higher wholesale prices of electricity and a drop in competition in the WEM. Consequently, Optimal Transmission Switching (OTS) has been proposed as a means by which the System Operator in the WEM can use to mitigate it. It is also imperative that the effect of the Unified Power Flow Controller (UPFC) on reducing the cost due to the market power using OTS must be investigated. Therefore, this study used the Fast Voltage Stability Index (FVSI) …

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Detection Of Arabic Sign Language By Machine Learning Techniques With Pca And Lda, Mosab Hassan, Atheer Sabri, Alaa Ali Mar 2026

Detection Of Arabic Sign Language By Machine Learning Techniques With Pca And Lda, Mosab Hassan, Atheer Sabri, Alaa Ali

Engineering and Technology Journal

People need a communication channel and a way to communicate with a person or group. Deaf people communicate with others through sign language. The remarkable and rapid development in image and video recognition systems has made researchers use this development to solve many problems, including sign language for the deaf, and reduce their suffering in communicating with ordinary people. This work aims to use and apply machine learning technology to build an automatic recognition system for Arabic Sign Language (ArSL). In this work, images of ArSL characters were recognized using four classification techniques (Naïve Bayes (NB), Decision Trees (DTs), and …

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Performances Study Of Psk And Ask Modulation Technique Under Atmospheric Turbulence In Fso Communication System, Esraa Al – Gazzi, Ekbal Ali, Assel Mohammed Mar 2026

Performances Study Of Psk And Ask Modulation Technique Under Atmospheric Turbulence In Fso Communication System, Esraa Al – Gazzi, Ekbal Ali, Assel Mohammed

Engineering and Technology Journal

The performance and reliability of a free-space optical (FSO) communication system can be greatly increased using various methods. The primary goal of each technique is to reduce the effect of disturbances that lead to intensity or phase fluctuations in the system's receiver. Recent issues include increased data consumption and a crowded radio frequency spectrum, where free-space optical communication (FSOC) has changed the way people share information in a big way. In place of wired communication systems, it is possible to transport voice, video, and data effectively through air. High speed, cost savings, small buildings, low power consumption, energy economy, maximum …

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Image Encryption Based On S-Box And 3d-Chaotic Maps And Secure Image Transmission Through Ofdm In Rayleigh Fading Channel, Jenan Namuq, Fadhil Hasan, Alaa Ali Mar 2026

Image Encryption Based On S-Box And 3d-Chaotic Maps And Secure Image Transmission Through Ofdm In Rayleigh Fading Channel, Jenan Namuq, Fadhil Hasan, Alaa Ali

Engineering and Technology Journal

Data security is vital if transferred over a wireless network or stored on a personal computer. The essential properties of chaos, such as initial state sensitivity and unpredictability, make it a crucial candidate for encryption applications. This paper proposes a 3D chaotic map and a cascaded S-Box that can be combined to get a high-efficiency and complex cryptographic algorithm. The first stage is ciphering using a 3D cat map, the second stage is an S-box based on a 3D Henon map, and the third stage is another ciphering stage using a 3D Henon map. This study combines various encryption techniques, …

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Fpga Implementation Of Efficient Adaptive Filter Incorporating Systolic Architecture, Harith Thannoon, Ivan Hashim Mar 2026

Fpga Implementation Of Efficient Adaptive Filter Incorporating Systolic Architecture, Harith Thannoon, Ivan Hashim

Engineering and Technology Journal

This paper introduces an approach that capitalizes on the retimed delay concept to enhance adaptive filters' operational efficiency. In particular, it introduces an adaptive filter configuration with minimal critical path delay. The adaptive filters, namely Least Mean Square (LMS), Recursive Least Square (RLS), and Affine Projection (AP) have been meticulously designed through the utilization of the Xilinx System Generator (XSG). The approach is based on a systolic architecture, which aims to reduce the critical path delay by minimizing the number of processing elements, including adders and multipliers, in each iterative process. Notably, the critical path of the proposed filters has …

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Lora Sensor Node Mounted On Drone For Monitoring Industrial Area Gas Pollution, Muthna Fadhil, Sadik Gharghan, Thamir Saeed Mar 2026

Lora Sensor Node Mounted On Drone For Monitoring Industrial Area Gas Pollution, Muthna Fadhil, Sadik Gharghan, Thamir Saeed

Engineering and Technology Journal

One of the biggest threats to human health is air pollution, which significantly influences people. Due to challenges like industrial and rural locations, where sensing frequently falls short of providing sufficient information about air quality, it is challenging to collect data close to pollution sources. Government-led statically deployed stationary monitors are typically used for air quality monitoring. However, many emissions that contribute to air pollution are erratic and unpredictable. A significant problem for environmental protection will be how to monitor air pollution emissions dynamically and efficiently. It can fulfill two objectives. The first is that if the Unmanned Aerial Vehicle …

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The Electrical And Mechanical Aspects Of Aluminum And Copper Resistance Spot Weld Joints, Marwah Fakhri, Ibtihal Mahmood, Ahmed Al-Mukhtar Mar 2026

The Electrical And Mechanical Aspects Of Aluminum And Copper Resistance Spot Weld Joints, Marwah Fakhri, Ibtihal Mahmood, Ahmed Al-Mukhtar

Engineering and Technology Journal

Resistance spot welding (RSW) is widely used in the automotive industry, particularly for copper-aluminum alloys in electric cars. RSW joint conductivity is crucial for electric vehicles. Welded parts may fracture due to tension, altering conductivity. The study examines resistance spot post-weld joint metallurgy and deformation-induced conductivity changes. The electric resistance of similar and dissimilar RSW joints was examined during tensile tests. Metallurgical tests for RSW joints revealed an increase in grain size from the base metal (BM) to the heat-affected zone (HAZ) and finally the fusion zone (FZ). Satisfactory shear tension strength results were obtained for dissimilar joints (Al-Cu) at …

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Improving The Charging Rate And Energy Recovery Of Triplex Tube Heat Storage-Based Pcm With Mono/Hybrid Nanoparticles, Ibrahim Sadiq, Sattar Aljabair, Abdulhassan Karamallah Mar 2026

Improving The Charging Rate And Energy Recovery Of Triplex Tube Heat Storage-Based Pcm With Mono/Hybrid Nanoparticles, Ibrahim Sadiq, Sattar Aljabair, Abdulhassan Karamallah

Engineering and Technology Journal

Latent thermal energy storage systems are widely utilized to match the inequality between heat supply and demand. Despite these systems' wide range of uses in various applications, their high potential is limited by the slow charging rate. The target of this study is to augment the thermal performance of paraffin-based on triplex tube heat storage by dispersion of two different types of conductive mono nanoparticles (Al2O3, CuO) and hybrid Nano additives of various volume fractions (0.4, 0.8, 1.6, 3.2%) into paraffin wax. The experimental work involves measurements and preparation of the considered Nano-PCM. The enthalpy porosity model and finite volume …

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Numerical Study Of The Effect Of Thermal Insulation And Window-To-Wall Ratio On Reducing The Thermal Loads Of The Residential Sector In Iraq, Abd Hussein, Ahmed Saleh, Hamdi Ahmed Mar 2026

Numerical Study Of The Effect Of Thermal Insulation And Window-To-Wall Ratio On Reducing The Thermal Loads Of The Residential Sector In Iraq, Abd Hussein, Ahmed Saleh, Hamdi Ahmed

Engineering and Technology Journal

The climate change that the world is witnessing has cast a greater shadow on the Middle East. Iraq, one of the region's countries, is experiencing harsh thermal conditions. With the increase in population growth in the country, there was a significant development in the housing sector, which exacerbated the thermal loads that the residential sector requires to overcome harsh weather conditions. This leads to increased energy consumption. To reduce this consumption and energy waste, a simulation study was conducted using the TRNSYS program to analyze the thermal behavior of a building whose walls consist of Gypsum, Juss, brick, and mortar, …

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Analyzing Energy Performance And Assessing Dry Moisture Content Of Briquettes Through Numerical Investigations, Oluwaseyi Alabi, Timothy Adeyi, Sakiru Ekun Mar 2026

Analyzing Energy Performance And Assessing Dry Moisture Content Of Briquettes Through Numerical Investigations, Oluwaseyi Alabi, Timothy Adeyi, Sakiru Ekun

Engineering and Technology Journal

This study presents a comprehensive numerical investigation into the energy evaluation and determination of dry moisture content of briquettes, a vital aspect of renewable energy production. Utilizing advanced computational fluid dynamics (CFD) modeling and simulations, we explored key parameters impacting briquette combustion, such as moisture content, size, density, and temperature profiles. The research demonstrates that these factors significantly influence combustion behavior, with the CFD model accurately predicting mass loss curves and burnout times. The process was completed in 10 minutes, reaching a temperature of 300K and yielding gases consisting of CO2, CO, and H2O, while the devolatilization front was assumed …

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Effect Of The Magnetic Field And Exhaust Gas Recirculation On The Performance And Emissions Of Biodiesel Engine Coated With Nanoceramics, Qusai Mahdi, Mahmoud Mashkour, Ibtihal Mahmoud Mar 2026

Effect Of The Magnetic Field And Exhaust Gas Recirculation On The Performance And Emissions Of Biodiesel Engine Coated With Nanoceramics, Qusai Mahdi, Mahmoud Mashkour, Ibtihal Mahmoud

Engineering and Technology Journal

This study investigates the influence of ceramic coating on diesel engine efficiency through comprehensive analysis. The investigation was conducted on a four-stroke Kirloskar TV1 diesel engine. The study further examined the effects of employing an 8000 Gauss magnetic field and exhaust gas recirculation on engine performance. The surfaces of the head of the cylinder, the piston, and both the inlet and exhaust valves are then covered with nano-ceramic materials. Atmospheric plasma spray-created nanostructured thermal barrier coatings (TBCs). The feeding powder type is 7% Y2O3-ZrO2 with a particle size of less than 100 nm yttria stabilized zirconia (YSZ) nano X (S4007) …

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