Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Discipline
Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 33031 - 33060 of 1825420

Full-Text Articles in Entire DC Network

Images Enhancement Based On A New Multi-Dimensional Fractal Created By Rectangular Function, Rabab Farhan Mar 2026

Images Enhancement Based On A New Multi-Dimensional Fractal Created By Rectangular Function, Rabab Farhan

Engineering and Technology Journal

Digital image processing is a field that is included in many journals due to its importance and the fact that it facilitates the achievement of many scientific and engineering applications worldwide. This specialization is linked with other disciplines, whether medical, engineering, sports, and others, as it facilitates the completion of applications quickly and efficiently. Researchers have discovered and garnered notice as a promising analytic tool in image processing using the idea of fractal dimension. In this effort, a new Multi-Dimensional Fractal (MDF) in view of the rectangle function was introduced a. As an application, the MDF to improve and enhance …

Go to article

Preparation And Performance Of Pu/Cpsf Blend Ultrafiltration Membranes For Removal Of Heavy Metal Ion Rejection Studies, Latha S., Shanthana Lakshmid, Maheswari P., Mohan D Mar 2026

Preparation And Performance Of Pu/Cpsf Blend Ultrafiltration Membranes For Removal Of Heavy Metal Ion Rejection Studies, Latha S., Shanthana Lakshmid, Maheswari P., Mohan D

Engineering and Technology Journal

The performance of membranes for a specific application can be determined with the help of structural properties such as molecular weight cut-off (MWCO), morphology, and pore statistics. Heavy metal ions from aqueous streams can be separated with the help of ultrafiltration membranes. In the presence and absence of the various components of the additive poly (ethylene glycol) 600, MWCOs and pore statistics of polyurethane (PU) and carboxylated polysulfone (CPSf) blend ultrafiltration (Total Polymer Concentration = 17.5 wt %) were studied with the help of dextran of different molecular weights ranging from 19 kDa to 150 kDa. The derived pore size, …

Go to article

Produced Water Deoxygenation Via Nitrogen Purging Scheme– Parametric Study – Part 2, Salam Al Dawery, Wameath Abdulmajeed, Saada Al Shukaili, Chandramouli Thotireddy, Ibrahim Al Amri Mar 2026

Produced Water Deoxygenation Via Nitrogen Purging Scheme– Parametric Study – Part 2, Salam Al Dawery, Wameath Abdulmajeed, Saada Al Shukaili, Chandramouli Thotireddy, Ibrahim Al Amri

Engineering and Technology Journal

In this following up paper, we present our findings by examining a pilot scale gasification column and applying nitrogen purging for samples of produced water grafted with different polyacrylamide concentrations (100 – 500 ppm). Upon applying a semi-batch, counter-current scheme for a series of experiments on packed gas-lift column, zero ppm level of dissolved oxygen (DO) was reached within less than 1 minute of nitrogen purging from the start time applied for solutions with viscosity less than 10 mPa.s and using the inline measuring scheme. However, zero ppm DO level was not reachable when purging produced water (PW) samples grafted …

Go to article

Remove Liquid Radioactive Wastes Utilizing Nanofiltration, Ultrafiltration, And Microfiltration Membranes, Alanood Alsarayreh, Taisir Abbas, Saleh Alaswad, Sabad E-Gul, A Bajoga Mar 2026

Remove Liquid Radioactive Wastes Utilizing Nanofiltration, Ultrafiltration, And Microfiltration Membranes, Alanood Alsarayreh, Taisir Abbas, Saleh Alaswad, Sabad E-Gul, A Bajoga

Engineering and Technology Journal

Radioactive waste is generated from fuel cycle processes in nuclear reactors and nuclear power plants (NPPs) in electrical power production, radioisotope manufacturing in nuclear research centers, and medical, industrial, and agricultural applications. Also, natural chain-linked radioisotopes (NORM) are generated from processing and burning fossil fuels and producing oil and natural gas. Therefore, a planned and integrated radioactive waste management strategy must be adopted to protect human health and the environment from the dangers of this waste through published research on a comprehensive radioactive waste management strategy and the testing and dissemination of several treatment options. The main objective is to …

Go to article

Hydrodynamic Properties Investigation Of Ebullated Bed Reactor Using Non-Newtonian Liquid, Zahraa Hassan, Asawer Al Wasiti, Zainb Shnain, Peter Philib Mar 2026

Hydrodynamic Properties Investigation Of Ebullated Bed Reactor Using Non-Newtonian Liquid, Zahraa Hassan, Asawer Al Wasiti, Zainb Shnain, Peter Philib

Engineering and Technology Journal

The importance of using EBR has been renewed recently due to the sharp increase in heavy feedstocks sent to refineries and the hydrocracking process. Most of these feedstocks have a non-Newtonian behavior. The performance of this type of reactor using non-Newtonian liquid is complicated and has not been covered well yet. Hence, the present work is devoted to elucidating the effect of the non-Newtonian behavior of fluid on the hydrodynamic properties of a three-phase (gas-liquid-solid) reactor under operating conditions of different values ​​of gas velocity (2, 4, 6) cm/sec, liquid velocity (0.9, 1.39, 1.8, 2.3) cm/sec, and recycle ratio (1.5, …

Go to article

Bio-Treatment Technologies Of Produced Water: A Review, Rana Azeez, Firas Al-Zuhairi Mar 2026

Bio-Treatment Technologies Of Produced Water: A Review, Rana Azeez, Firas Al-Zuhairi

Engineering and Technology Journal

Petroleum is a vital source of energy for most human activities. The growth of the oil and gas sector is associated with releasing a significant amount of produced water (PW) from onshore and offshore fields. Thus, undesirable toxic pollutants in produced water have become a major concern for those concerned with environmental issues. Therefore, interest in recycling and beneficial reuse of pollutants has increased due to large amounts of PW. In general, various physical and chemical technologies and bio-treatments for PW or combined between them are applied. Bio-treatment is preferred due to its efficiency and eco-friendly compared with other PW …

Go to article

Recent Development In Hydrodynamic And Heat Transfer Characteristics In The Three-Phase Fluidized-Bed System, Omar Mahdy, Amer Abdulrahmn, Jamal Ali Mar 2026

Recent Development In Hydrodynamic And Heat Transfer Characteristics In The Three-Phase Fluidized-Bed System, Omar Mahdy, Amer Abdulrahmn, Jamal Ali

Engineering and Technology Journal

Gas–liquid-solid fluidized beds are broadly utilized in the petrochemical, pharmaceutical, refining, food, biotechnology, and environmental industries. Due to complex phenomena, such as the particle-particle, liquid-particle, particle-bubble interactions, complex hydrodynamics, and heat transfer of three-phase (gas-liquid-solid) fluidized beds, they are incompletely understood. The ability to accurately predict the essential characteristics of the fluidized-bed system, such as hydrodynamics, individual phase mixing, and heat transfer parameters, is necessary for its successful design and operation. This paper investigates the pressure drop, minimum fluidization velocity, phase holdup, heat-transfer coefficient of a fluidized bed reactor, heat transfer studies, CFD simulation, and the effect of these parameters …

Go to article

Improved Water-Based Mud Rheological Properties And Shale-Inhibition Behavior By Using Aluminum Oxide And Iron Oxide Nanoparticles, Hasan Abbood, Ibtehal Shakir Mar 2026

Improved Water-Based Mud Rheological Properties And Shale-Inhibition Behavior By Using Aluminum Oxide And Iron Oxide Nanoparticles, Hasan Abbood, Ibtehal Shakir

Engineering and Technology Journal

Nanotechnology can be used to develop drilling fluid additives that can improve the drilling fluid's properties. Using two types of nanoparticle (NP) additives in water-based drilling fluids have been studied in this paper. Three major drilling mud systems, namely potassium chloride (KCl) as a basic mud, KCl/aluminum oxide (Al2O3) NPs, and KCl/iron (Fe2O3) NPs, were prepared and studied for enhancement of rheological properties and shale inhibition. It was found that the drilling mud contained NPs in concentrations of 0.25, 0. 5, 0.75, and 1 g. Al2O3 and Fe2O3 NPs added to KCl/polymer mud systems resulted in a 50% and 30% …

Go to article

Hydroisomerization Of N-Heptane In A Fixed-Bed Reactor Using A Synthesized Bimetallic Type-Hy Zeolite Catalyst, Younus Khalaf, Bashir Sherhan, Zaidoon Shakour Mar 2026

Hydroisomerization Of N-Heptane In A Fixed-Bed Reactor Using A Synthesized Bimetallic Type-Hy Zeolite Catalyst, Younus Khalaf, Bashir Sherhan, Zaidoon Shakour

Engineering and Technology Journal

The synthesis of NaY-zeolite was performed hydrothermally. The preparation of the bifunctional catalysts was achieved by loading NH4Y-zeolite with a cheap Zr metal, as a second loading metal, with tiny amounts of Pt to compose a Pt-Zr/Y-zeolite catalyst. Different characterization methods (i.e., XRD, SEM, EDX, BET, and AFM) were used to investigate the catalyst properties. The catalytic performance was studied by performing the hydroisomerization of n-heptane in a gas phase at a temperature of 275°C and atmospheric pressure in a fixed-bed reactor. The GC-FID results of the products confirmed the positive role of Zr in enhancing the catalytic features, as …

Go to article

Desulfurization Of Real Diesel Fuel Onto Mesoporous Silica Mcm-41 Implementing Batch Adsorption Process: Equilibrium, Kinetics, And Thermodynamic Studies, Ammar Kadhum, Talib Albayati Mar 2026

Desulfurization Of Real Diesel Fuel Onto Mesoporous Silica Mcm-41 Implementing Batch Adsorption Process: Equilibrium, Kinetics, And Thermodynamic Studies, Ammar Kadhum, Talib Albayati

Engineering and Technology Journal

In the current work, sulfur was removed from actual diesel fuel containing 1.2 wt.% sulfur from the Al-Dura Oil Refinery (Iraq), which was studied using adsorption desulfurization with the spherical mesoporous silica MCM-41. This study investigated the effects of different operating conditions, including the dose of MCM-41 (0.04-0.2 gm), time (60-180 min), and temperature (30-70°C). The optimal working conditions were determined to be 0.4 gm MCM-41, 180 min, and 70°C. After exploring the isotherm models of Langmuir, Freundlich, and Temkin, Temkin models with a correlation coefficient (R2 = 0.9996) were selected to best represent the stable data. The kinetics of …

Go to article

Use Of Tio2 In Photocatalysis For Air Purification And Wastewater Treatment: A Review, Seba Mohammed, Zainab Shnain, Mohammad Abid Mar 2026

Use Of Tio2 In Photocatalysis For Air Purification And Wastewater Treatment: A Review, Seba Mohammed, Zainab Shnain, Mohammad Abid

Engineering and Technology Journal

This study reviews recent research on the synthesis and application of titanium dioxide (TiO2)-based photocatalysts for environmental applications. The principles of non-homogenous photo-catalysis include utilizing a solid semiconductor, such as titanium dioxide Nano or macro, to form a stable suspension (heterogeneous phase) at the impact of irradiation to elevate a reaction at the surface interface of the different phases in the system. Recently, titanium dioxide has been considered the better semiconductor in non-homogenous photoinduced treatment. TiO2-based photocatalysts have broad applications for industrial processes because of their exceptional physicochemical properties. Nevertheless, having a narrow band near the ultraviolet region limits its …

Go to article

New Developments In Inhibition Of The Sweet Environment In A Variety Of Corrosive Media: A Review, Wasan Hameed, Khalid Rashid, Anees Khadom Mar 2026

New Developments In Inhibition Of The Sweet Environment In A Variety Of Corrosive Media: A Review, Wasan Hameed, Khalid Rashid, Anees Khadom

Engineering and Technology Journal

This paper aims to look at how pipeline steel and crude oil storage tanks resist corrosion in aqueous carbon dioxide (CO2) environments. To this aim, we have studied different inhibitors, particularly the heterocyclic inhibitor, which is used to prevent mild steel corrosion in various situations. On mild steel, the corrosion-prevention mechanism of heterocyclic inhibitors is also investigated. CO2 corrosion is the most frequent and dreaded type of corrosion in the oil and gas industry, and corrosion inhibitors are the most effective way to fight CO2 corrosion in mild steel. Nonetheless, continual exposure to pollutants and corrosion causes such as sulfur …

Go to article

Produced Water Deoxygenation: Investigation Of Nitrogen Purging Scheme– Parametric Study – Part1, Salam Al Dawery, Wameath Abdulmajeed, Saada Al Shukaili, Chandramouli Thotireddy, Ibrahim Al Amri Mar 2026

Produced Water Deoxygenation: Investigation Of Nitrogen Purging Scheme– Parametric Study – Part1, Salam Al Dawery, Wameath Abdulmajeed, Saada Al Shukaili, Chandramouli Thotireddy, Ibrahim Al Amri

Engineering and Technology Journal

Produced water (PW) is water that comes out of the well with the crude oil during crude oil production. The quality of produced water varies significantly based on the geochemistry of the producing formation, the type of hydrocarbon produced, and the characteristics of the producing well. A well-known obstacle hindering the re-use of the produced water, in different sectors, is the high content of dissolved oxygen (DO) as it can cause corrosion and polymer degradation. In this study, we report the experimental investigations for de-oxygenating samples of PW collected from Omani oil fields via a gas lift unpacked and packed …

Go to article

Theory And Modeling Of Slab Waveguide Based Surface Plasmon Resonance, Amnah Hasan, Razi Al-Azawi, Ali Alwahib Mar 2026

Theory And Modeling Of Slab Waveguide Based Surface Plasmon Resonance, Amnah Hasan, Razi Al-Azawi, Ali Alwahib

Engineering and Technology Journal

The current study proposes a developing surface plasmon resonance (SPR) sensor that has been widely employed to detect viruses, such as environmental analytes, biological and chemical analytes, and monitoring and medical diagnostics. Optical waveguides have much potential for developing new chemical and biological sensors. Graphene is the world's most vital substance and can be used to enhance other materials. A composite silver film-based SPR sensor with the waveguide. To enhance the silver film's stability, detect the best thickness with the best resonance using different types of analyte: air than 1.1, 1.2, 1.3, and water. The resonance wavelength numerically calculated, loss, …

Go to article

Build And Implement Radiation Control Using Iot In Parabolic Trough Solar Collector (Ptsc), Sarah Bassem, Samer Ismael, Jalal Jalil Mar 2026

Build And Implement Radiation Control Using Iot In Parabolic Trough Solar Collector (Ptsc), Sarah Bassem, Samer Ismael, Jalal Jalil

Engineering and Technology Journal

Connecting the devices to the internet based on the internet of things IoT increases the capability of monitoring and measuring, and controlling essential variables. In this study, the radiation intensity was controlled via the internet of things IoT for PTSC to study the collector's behavior.  The light control circuit was designed, built, and implemented. The circuit mainly consists of a power supply, Arduino, relay, and potentiometer. Radiation was successfully monitored using a sensor and displayed through a smartphone via Wi-Fi, and the intensity of radiation light controls the PCM status. A data logging system was applied using a micro SD …

Go to article

The Fundamental Of Reduced Graphene Oxide With Nanosilver Composite Films Using The Spin Coating Technique, Hamsa Alaloosi, Farah Noori, Abdulhadi Jidran Mar 2026

The Fundamental Of Reduced Graphene Oxide With Nanosilver Composite Films Using The Spin Coating Technique, Hamsa Alaloosi, Farah Noori, Abdulhadi Jidran

Engineering and Technology Journal

Graphene oxide synthesis by hummers method and reduction by the green chemical method using green tea. Preparation films with reduced graphene oxide (rGO) and Silver Nanoparticles (AgNPs) by a spin coating method. The preparation films and Nanomaterial characteristics with X-Ray diffraction (XRD) GO has a peak at (2θ = 11.22̊ ). While rGO has a wider peak at (2θ = 26.2̊ ). The (rGO +AgNPs) films have five obvious diffraction angles. In Scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX), flaky sheet (rGO), and spherical (AgNPs) with Nanosize about ~20 nm, the peaks of EDX indicated the presence of …

Go to article

Numerical And Theoretical Analysis Of A Spur Gear Using Composite And Conventional Materials, Jwan Mohammed, Dlair Ramadan Mar 2026

Numerical And Theoretical Analysis Of A Spur Gear Using Composite And Conventional Materials, Jwan Mohammed, Dlair Ramadan

Engineering and Technology Journal

A spur gear is one of the most common forms of precision cylindrical gear. In the industry, reducing the weight of gears while keeping their useful properties has become an even more pressing challenge. As a result, the investigators have made many attempts to reduce the weight of the gears. Despite these efforts, the problem still requires more research. This study presented a spur gear's modeling and finite element analysis using different materials. A three-dimensional spur gear was designed, modeled, and simulated using ANSYS software. Five different materials, including two conventional materials (stainless steel and copper alloy) and three different …

Go to article

Potential And Development Of Horizontal Axis Wind Turbine Systems And Technologies: A Review, Mohammed Habib, Abdullateef Jadallah, Ahmed Hussein Mar 2026

Potential And Development Of Horizontal Axis Wind Turbine Systems And Technologies: A Review, Mohammed Habib, Abdullateef Jadallah, Ahmed Hussein

Engineering and Technology Journal

Wind energy has a potency of playing a vital role in the future of energy demand providing and environment freshening in many areas of the world. Utilizing wind turbine systems has become a competitive recourse among other renewable energy sources in terms of cost-effectiveness and the transition toward renewable energy usage. Researchers and developers are constantly dedicated to innovating to improve the technology of designing wind turbine systems. Wind energy depends mainly on the wind velocity and the area that swept them, increasing the wetted area. This is done by either upscaling the area of the wind rotor or constructing …

Go to article

Study Of The Effect Of Working Fluids On The Thermal Performance Of A Horizontal Heat Pipe With Stainless Steel Wick, Ali Soud, Qusay Abdul Ghafoor Mar 2026

Study Of The Effect Of Working Fluids On The Thermal Performance Of A Horizontal Heat Pipe With Stainless Steel Wick, Ali Soud, Qusay Abdul Ghafoor

Engineering and Technology Journal

The present work aims to study the effects of working fluids on the thermal performance of the heat pipe with a wick and in a horizontal position. The experiments were conducted using a copper heat pipe with a 20.8 mm inner diameter, and the length of the evaporator, condenser, and the adiabatic regions were 300 mm, 350 mm, and 300 mm, respectively. The working fluids selected were water, Methanol, ethanol, and different binary mixtures (50: 50) %, (30: 70) %, (70: 30) % mixing ratios. The filling ratio was 50% of the evaporator volume for all working fluids, and the …

Go to article

Thermal Behavior Simulation Of An Externally Cooled Electric Motor, Noureddine Meneceur, S. Boulahrouz, A. Boukhari, R. Meneceur Mar 2026

Thermal Behavior Simulation Of An Externally Cooled Electric Motor, Noureddine Meneceur, S. Boulahrouz, A. Boukhari, R. Meneceur

Engineering and Technology Journal

This paper presents the simulation results of the thermal behavior for an externally cooled asynchronous electric motor in both steady and transient states cases. For this purpose, a mathematical model based on the heat equation is first developed to determine internal thermal sources such as copper, mechanical and iron losses. Then, a computer program is developed to numerically simulate the proposed mathematical model. This program determines the radial distribution of steady and transient states temperatures, and predicts the effect of the ambient temperature on the transient and permanent temperature distributions. This makes it possible to calculate the specific speed of …

Go to article

Studying The Effect Of Un Coated And Multilayer Coated Tools On Cutting Temperature In Turning Operation, Farhan Challab, Maan Tawfiq, Salah Jawad Mar 2026

Studying The Effect Of Un Coated And Multilayer Coated Tools On Cutting Temperature In Turning Operation, Farhan Challab, Maan Tawfiq, Salah Jawad

Engineering and Technology Journal

The present work studies three variables (cutting velocity, feed rate, and cut depth) on hard turning cutting temperature of uncoated and multilayer-coated carbide (TiN, TiN/TiCN, TiN /Al2O3/ TiCN) inserts are used in AISI 1045 alloy steel. The tool's temperature was measured simultaneously, measuring the temperature of the tool-chip interface using infrared radiation (IR) pyrometer in this investigation.  This study investigated the performance of four distinct coated and uncoated PVD and CVD tools during turning operations. Four cutting speeds (56, 88, 112, 141) m/min, four feed rates (0.065, 0.08, 0.16, 0.228) mm/rev.,  in the experiments, a constant cutting depth of (1) …

Go to article

Synthesis Zno Heterostructured Nanophotocatalyst Simulated Solar Light Irradiation For Removal Contaminate Carbamazepine In Aqueous Solution, Eman Rdewi, Ahmed Abdulkadhim Al-Ghaban, Khalid Abbas Mar 2026

Synthesis Zno Heterostructured Nanophotocatalyst Simulated Solar Light Irradiation For Removal Contaminate Carbamazepine In Aqueous Solution, Eman Rdewi, Ahmed Abdulkadhim Al-Ghaban, Khalid Abbas

Engineering and Technology Journal

In this study, zinc oxide nanoparticles (ZnO) were produced in aqueous media to photodegrade harmful carbamazepine compounds (CBZ) in aqueous solution under simulated solar-light using the sol-gel technique with zinc chloride and NaOH as precursors. X-ray diffraction (XRD), FTIR analysis, Field Emission Scanning Electron Microscopy (FE-SEM), and UV–vis diffuse reflectance spectra (UV-vis DRS) were used to analyze the ZnO NPs powder. According to the XRD results, ZnO nanoparticles showed a hexagonal symmetry shape with 13 nm particle size value. The absorption bands of ZnO nanoparticles were identified using FT-IR spectra peaking. The ZnO nanoparticles produced in this work are spherical, …

Go to article

Improvement Of Metal Forging Processes By Stresses And Temperatures Analysis, Adnan Mohammeda, Ibrahim Ahmed, Munir Allow Mar 2026

Improvement Of Metal Forging Processes By Stresses And Temperatures Analysis, Adnan Mohammeda, Ibrahim Ahmed, Munir Allow

Engineering and Technology Journal

The mechanical components are produced by various fabrication methods, although forged products have excellent mechanical characteristics at a minimal cost. The stress and temperature analysis process in the closed die hot forging contributed to finding failure regions in these dies through simulations in the FE program. This enables the process to be improved and reduced time and mineral losses. A simplified model was used to represent the forming process, with a temperature of (1150-950 °C) was simulated using MSC Simufact software. The forge fastener head product is formed with a horizontal mechanical press of 800 tones. In this research, the …

Go to article

Preparation Of Cuo/Zno Nano-Particles Using Sol-Gel Technique And Studying The Characterization, Doaa Yassen, Farhad Othman, Alaa Abdul Hamead Mar 2026

Preparation Of Cuo/Zno Nano-Particles Using Sol-Gel Technique And Studying The Characterization, Doaa Yassen, Farhad Othman, Alaa Abdul Hamead

Engineering and Technology Journal

Copper oxide (CuO) and zinc oxide (ZnO) are two of the most promising oxides under development right now. The sol-gel technique was used to make Nano composite particles NCPs of ZnO-CuO. The copper (II) nitrate rehydrate 0.1M and zinc nitrate hex hydrate 0.1M liquids were mixed in a 1:1 ratio, and the gel was formed at 80 °C, then dried and calcined for various times 500 °C (3, 5, and 7 hours). Particle size analyzer (PZA), X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and apparent density were used to characterize the CuO/MgO particles. The x-ray diffraction results showed …

Go to article

Effect Of Voltage On Electrode Wear Rate (Ewr) In The Electrical Discharge Machining (Edm) For Stainless Steel Aisi 444, Shukry Aghdeab, Anwer Abdulnabi Mar 2026

Effect Of Voltage On Electrode Wear Rate (Ewr) In The Electrical Discharge Machining (Edm) For Stainless Steel Aisi 444, Shukry Aghdeab, Anwer Abdulnabi

Engineering and Technology Journal

Electrical Discharge Machining process (EDM) is a nontraditional metal removal technique that uses thermal energy to erode the workpiece without generating any physical forces of cutting between the tool and the machining part. It is used to cutting of hard and electrical conductivity materials and product intricate shapes of products. The aim of this work is to study the effect of changing voltage values on electrode wear rate (EWR). The machining parameters includes voltage (V), peak current (Ip), pulse duration (Ton) and finally, pulse interval (Toff). The results show that the EWR was increase with rising in voltage, peak current …

Go to article

Properties Of Welded Copper Tubes Fabricated Via Friction Crush Welding, Abdul Jabbar Jomah, Akeel Subhi, Fadhil A. Hashim Mar 2026

Properties Of Welded Copper Tubes Fabricated Via Friction Crush Welding, Abdul Jabbar Jomah, Akeel Subhi, Fadhil A. Hashim

Engineering and Technology Journal

The welding process is one of the fabrication processes in which tubes can be performed for structural purposes and transport liquids or gases. This study is focused on the manufacturing, characterization, and evaluation of mechanical properties of welded tubes made from oxygen-free copper (C1020) sheets using friction crush welding. The welded tubes were produced using different tool rotation speeds (1500, 1600, and 1700 rpm) and feed rates (130, 140, and 150 mm/min). The flanged edge height of 2.5 mm and 0.5 mm gap between the ends of the copper sheet was used. All examinations on welded tubes were achieved using …

Go to article

Structural Characterization Of (Mg(1-X)Pbxo)-Nps By Modified Pechini Method, Israa Najem, Fadhil Abd Rasin, Shaker Edrees Mar 2026

Structural Characterization Of (Mg(1-X)Pbxo)-Nps By Modified Pechini Method, Israa Najem, Fadhil Abd Rasin, Shaker Edrees

Engineering and Technology Journal

The structural characterization was discussed in the present paper of the pure MgO nanoparticles and the doped (Mg(1-x)pbxO) nanoparticles specimens, where (0 ≤ x ≤ 0.03). The modified Pechini method was used to prepare all the specimens. From (DTA), the convenient temperature of decomposition from Mg(OH)2 to MgO was above 375°C. The structure investigation (XRD) revealed that all the specimens have identical space groups and index well to cubic structures. The obtained crystallite size by Scherrer''s equation was increased with increasing the fraction of doping except for (Mg0.97Pb0.03O) due to the formation of PbO oxide. The molecular vibration by FTIR …

Go to article

Effect Of Domestic Dry Sewage Sludge On Concrete Compressive Strength, Alaa Al-Obaidi, Riyad Al-Anbari, Maan Hassan Mar 2026

Effect Of Domestic Dry Sewage Sludge On Concrete Compressive Strength, Alaa Al-Obaidi, Riyad Al-Anbari, Maan Hassan

Engineering and Technology Journal

The possibility of saving and sustaining natural materials by reusing waste is one of the most important goals researchers seek to achieve and prove its effectiveness and positive impact on the environment. In this study, domestic wastewater sludge was utilized in concrete production as partial cement changing with different ratios (0, 5, 10, and 15) % with dry sludge. The study showed that the compressive strength test showed that the partial replacement of cement by dry sludge caused reduction increased directly with the increase of sludge ratio compared with concrete reference specimens. The study found that dry sludge can be …

Go to article

Mechanical Performance Of Blended Fly Ash-Based Geopolymer Concrete With Ggbs And Metakaolin, Ali Ali, Tareq Al-Attar, Waleed A. Abbas Mar 2026

Mechanical Performance Of Blended Fly Ash-Based Geopolymer Concrete With Ggbs And Metakaolin, Ali Ali, Tareq Al-Attar, Waleed A. Abbas

Engineering and Technology Journal

One of the most user-friendly alternatives to ordinary concrete is geopolymer concrete(GPC), which achieves the same result. GPC is a unique substance made by activating source materials with a high concentration of silica and alumina. As a result, geopolymer binders use less raw resources and emit less carbon dioxide. For these reasons, most academics are focusing on these sorts of resins to develop eco-friendly housing. This article reports on an experimental investigation that examined the Mechanical Performance of Blended Fly Ash based Geopolymer concrete at 7,28 and 360 days made with two different activator solution molarities and varying R (SiO2/Al2O3) …

Go to article

The Effect Of Scrap Tires Recycled Steel Fibers On Some Hardened Properties Of Green Scc, Nadeem Salam, Wasan Khalil Mar 2026

The Effect Of Scrap Tires Recycled Steel Fibers On Some Hardened Properties Of Green Scc, Nadeem Salam, Wasan Khalil

Engineering and Technology Journal

The purpose of this study is to investigate some hardened properties of green self-compacting concrete (GSCC) with 15% volumetric replacements of crushed clay brick waste as coarse aggregate and reinforced with scrap tires recycled steel fibers (STRSF) with 0, 0.25, 0.5and 0.75%volume fraction and 40 as an aspect ratio. Also, a combination of two STRSF aspect ratios of 40 and 60 was used in GSCC as hybrid fiber reinforcement (0.25 and 0.25%, 0.5 and 0.25%, 0.25 and 0.5% of aspect ratios 40 and 65, respectively). Scrap tires recycled steel fibers had been used to improve the properties of the green …

Go to article

First Prev Next Last