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Articles 781 - 810 of 195925

Full-Text Articles in Engineering

Effect Of Different Fiber Reinforcements On Some Properties Of Prosthetic Socket, Noor Faheed, Jawad Oleiwi, Qahtan Hamad Jul 2026

Effect Of Different Fiber Reinforcements On Some Properties Of Prosthetic Socket, Noor Faheed, Jawad Oleiwi, Qahtan Hamad

Engineering and Technology Journal

In the perspective of environmental advance, significant attentiveness is being displayed in the usage of natural fibers like reinforcement in polymer composites. This paper focuses on building a prosthetic socket arranged from natural fiber-reinforced composite as an effort to substitute material currently accessible in the manufacturing of the socket. The vacuum bagging procedure was adopted to yield a below-knee socket. The laminates encompass woven flax, sisal, cotton, carbon, person, and glass fabric. The impact of diverse fiber layering sequences on some of the physical and mechanical characteristics was assessed. Laminated specimens were characterized by tests such as (hardness, surface roughness, …

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Electrophoretic Deposition Used To Prepare And Analyze The Microstructure Of Chitosan/Hydroxyapatite Nano-Composites, Israa Ahmed, Hussein Jaber, Shaymaa Salih Jul 2026

Electrophoretic Deposition Used To Prepare And Analyze The Microstructure Of Chitosan/Hydroxyapatite Nano-Composites, Israa Ahmed, Hussein Jaber, Shaymaa Salih

Engineering and Technology Journal

This research studies the coating layer properties from chitosan and nano –hydroxyapatite made by pulsed electrophoretic deposition (PEPD) for biomedical applications. The 316L SS alloys were coated with hydroxyapatite in different solutions in 100 mL of suspension at a 30 V continuous voltage. To characterize the deposited coatings, X-ray diffraction spectroscopy (XRD), Fourier transform infrared (FTIR), Contact Angle, scanning electron microscopy (SEM), energy dispersive x-ray analysis (EDX),Yield deposition and Optical microscopy structural (OM) was used for coating layer, in addition to being calculated Zeta potential for suspensions. The aim of this study is to show that using the Pulsed EPD …

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Pentacene Based Organic Field Effect Transistor Using Different Gate Dielectric, Ayat Kadhim, Estabraq Abdullah, Abdulhadi Judran Jul 2026

Pentacene Based Organic Field Effect Transistor Using Different Gate Dielectric, Ayat Kadhim, Estabraq Abdullah, Abdulhadi Judran

Engineering and Technology Journal

This paper presents the electrical behavior of the top contact/ bottom gate of an organic field-effect transistor (OFET) utilizing Pentacene as a semiconductor layer with two distinctive gate dielectric materials Polyvinylpyrrolidone (PVP) and Zirconium oxide (ZrO2) were chosen. The influence of the monolayer and bilayer gates insulator on OFET performance was investigated. MATLAB software was used to simulate and determine the electrical characteristics of a device. The output and transfer characteristics were studied for ZrO2, PVP and ZrO2/PVP as an organic gate insulator layer. Both characteristics show a high drain current at the gate dielectric ZrO2/PVP equal to -0.0031A and …

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Numerical And Experimental Study Of Hybrid Composite Body Armor, Iftikhar Saleem, Mayyadah Abed, Payman Ahmed Jul 2026

Numerical And Experimental Study Of Hybrid Composite Body Armor, Iftikhar Saleem, Mayyadah Abed, Payman Ahmed

Engineering and Technology Journal

Kevlar is widely used in ballistic applications to protect against hand pistols, due to its high strength, lightweight, and high impact resistance. Compared to other fabrics, Kevlar is considered a typical material due to its strength properties for bullet-proof vests. This project aims to develop a hybrid composite and investigate its behavior under ballistic impact both experimentally and theoretically. Ceramic/woven fabric reinforced epoxy/polycarbonate multilayered armors were developed. The initial layer of defense against the bullet is silicon carbide (SiC). The intermediate composite is made up of aramid fabric (Kevlar) reinforced epoxy (KEV/EPX). The rear layer was made of polycarbonate (PC). …

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Preparation And Characterization Of Niti/Pva Nanofibers By Electrospinning, Akram Jabur, Randa Al-Tuhafi Jul 2026

Preparation And Characterization Of Niti/Pva Nanofibers By Electrospinning, Akram Jabur, Randa Al-Tuhafi

Engineering and Technology Journal

NiTi alloys are widely used in biomedical applications for their unique properties particularly the shape memory effect, superelasticity, and biocompatibility. In this research, NiTi/PVA composite nanofibers are fabricated by electrospinning technique, using a novel method of producing NiTi ultrafine particles by immersing amorphous NiTi alloy in dilute aqua regia solution. The NiTi particles are successfully embedded in the PVA matrix. The produced NiTi particles are analyzed by X-ray diffraction (XRD), Energy dispersive spectroscopy (EDS), and Particle size analyzer. The XRD pattern of ultrafine NiTi particles shows much better phases as compared to the XRD pattern of the amorphous NiTi alloy …

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Improve The Corrosion Resistance Of The Copper-Zinc Alloy By The Epoxy-Wo3 Nanocomposite Coating, Ban Abbass, Kadhum Shabeeb, Ayad Hassan Jul 2026

Improve The Corrosion Resistance Of The Copper-Zinc Alloy By The Epoxy-Wo3 Nanocomposite Coating, Ban Abbass, Kadhum Shabeeb, Ayad Hassan

Engineering and Technology Journal

Metal corrosion is one of the most critical challenges in industrial processes. In this research, nanocomposite coating was synthesized by blending tungsten trioxide (WO3) nanoparticles with Epoxy resin and applied on brass samples to evaluate the performance of corrosion protection under stressed environments. A dip-coating method was adopted to coat the brass sample's surface. Coated and uncoated brass samples have been subjected to corrosion tests to study the corrosion behavior when exposed to corrosive media. Obtained results indicated that the brass coated samples with mixed epoxy\tungsten trioxide (WO3) exhibited reasonable corrosion resistance because of the ceramic protective barrier on the …

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Preparation Of Graphene Nanosheets From Graphite Flakes Via Shear Assisted Exfoliation, Ali Saloum, Basma Al-Tamimi, Saad Farid Jul 2026

Preparation Of Graphene Nanosheets From Graphite Flakes Via Shear Assisted Exfoliation, Ali Saloum, Basma Al-Tamimi, Saad Farid

Engineering and Technology Journal

Graphene is one of the most important forms of carbon. Due to its exceptional physical, chemical, and mechanical properties, it’s used in different fields such as electronic, energy storage, and medical applications. Therefore, the production of graphene in large quantities, at a low cost, and high quality, has become critical. Using graphite powder, a few layers of graphene sheets were prepared via a series of mechanical exfoliation methods. the dry ball milling process by the planetary mill was used. Thereafter, the milling was followed by shear force and then supported by ultra-sonication to reach the lowest level of the graphene …

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Wild Clary Plant Extract As Corrosion Inhibitor For Carbon Steel In Seawater Medium, Zainab Aziz, Rana Majed, Majid Abd Jul 2026

Wild Clary Plant Extract As Corrosion Inhibitor For Carbon Steel In Seawater Medium, Zainab Aziz, Rana Majed, Majid Abd

Engineering and Technology Journal

Aqueous extract of wild clary has been used in place of a corrosion inhibitor in the corrosion control of carbon steel. The major components of this extract are Ethan amine, Amino-octadic, and 4H-Pyran-4-one. It has an excellent inhibition efficiency (IE) of 83.078% at a concentration of 20 (mL/L) and a temperature of 298 (K). The extract was characterized by FTIR and GC MS, where the antibacterial was tested and the protective film was analyzed on the samples using FTIR spectra. The protective film formed on the metal surface is confirmed using an electrochemical study by Potentiostat, which revealed that this …

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Recycling Of Wood – Plastic Composite Prepared From Poly (Ethylene Terephthalate) And Wood Sawdust, Halla Shehap, Mohammed Alzuhairi, Sarmad Ibrahim, Saif Hussien Jul 2026

Recycling Of Wood – Plastic Composite Prepared From Poly (Ethylene Terephthalate) And Wood Sawdust, Halla Shehap, Mohammed Alzuhairi, Sarmad Ibrahim, Saif Hussien

Engineering and Technology Journal

Plastic waste has become one of the humanities and the ecosystem balance serious environmental Challenges. Furthermore, it is the primary source of plastic pollution because it is inexpensive, widely available, and frequently discarded. Using various waste materials and side fractions as part of wood-plastic composites is one way to promote the circular economy (WPC). Several environmental benefits can be realized by using recycled plastic, including extending the usable life of plastic, reducing waste, contributing to the development of trash recycling, and preventing resource depletion. One of the most efficient recycling processes is glycolysis; the (PET) is depolymerized by ethylene glycol …

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Investigation Of The Effect Of Microcapsule Additive On Mechanical And Physical Properties Of Concrete, Reem Salmana, Alaa Abdul-Hamead, Farhad Othman Jul 2026

Investigation Of The Effect Of Microcapsule Additive On Mechanical And Physical Properties Of Concrete, Reem Salmana, Alaa Abdul-Hamead, Farhad Othman

Engineering and Technology Journal

Cracks are a fundamental problem in concrete, so this research investigates an experimental study of the effect of adding SiO2 on the self-healing behaviour of concrete. The study is done by studying the physical properties, microstructure, and mechanical properties of concrete. Microcapsules were prepared to contain (cement and nano SiO2) in a (palettization (fluidize bed coating) method) with (5,10, and 15) % of cement weight. The ratio of the prepared concrete mixture was (1: 2: 4) and the ratio of water to cement (W / C) 0.45 by the weight of cement was also added as 0.6% Superplasticizer to all …

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Evaluation Of The Microstructure And Mechanical Properties Of Al / Fe3o4 Nanocomposites, Suaad Jiaad, Khansaa Salman, Ahmed Hussein Jul 2026

Evaluation Of The Microstructure And Mechanical Properties Of Al / Fe3o4 Nanocomposites, Suaad Jiaad, Khansaa Salman, Ahmed Hussein

Engineering and Technology Journal

The goal of this research is to study the microstructural analysis and mechanical properties of an aluminum matrix reinforced with different amounts of nano Fe3O4 at (2, 4, 6, 8, and 10wt. %). Al/ Fe3O4 nanocomposites specimens were prepared using the powder metallurgy route. Many examinations, including Field Emission Scanning Electron Microscopy (FESEM) and X-Ray Diffraction (XRD) analysis, were performed on the specimens in this study to determine the microstructure and phases of the nanocomposites. Mechanical tests, such as compressive, microhardness, and wear tests, were also performed to assess the mechanical properties of the nanocomposites. The results of this study …

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Investigation Of Some Properties For Laminated Composite Used For Prosthetic Socket, Shereen Abdulrahman, Qahtan Hamad, Jawad Oleiwi Jul 2026

Investigation Of Some Properties For Laminated Composite Used For Prosthetic Socket, Shereen Abdulrahman, Qahtan Hamad, Jawad Oleiwi

Engineering and Technology Journal

Polyester has been used as a prosthetic socket base. It is well documented that the raw material of the socket base should have exhibited good mechanical properties. Prosthetic socket is a device that connects an artificial limb with the amputee part. In this work, seven laminated composites were prepared using vacuum technique from polyester resin and reinforced with Jute, Carbon, Glass, and Perlon fibers. The objective of this study is to manufacture prosthetic sockets from different laminated composite materials (fibers reinforced polymer) to make high-strength and durable prosthetic socket design. The results showed that the best laminated composite specimens have …

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Optimization Of Automatic Generation Control And Economic Load Dispatch For Two Area Six Unit Interconnected Power System, Faeq Zwayyer, Afaneen Abbood, Jasim Hussein Jul 2026

Optimization Of Automatic Generation Control And Economic Load Dispatch For Two Area Six Unit Interconnected Power System, Faeq Zwayyer, Afaneen Abbood, Jasim Hussein

Engineering and Technology Journal

This paper proposes an integrated Economic Load Dispatch (ELD) and Automatic Generation Control (AGC) for interconnected power systems. Based on their participation factor determined from the economic load dispatch calculation, each unit shares the total change in the same control region. In this study, two control areas are considered. Three thermal units are located in each control area. An integral controller (I) is only used for the AGC mechanism's secondary controller and is used for the primary controller for the ELD mechanism. An Improved Grey Wolf Optimizer (IGWO) technique is used to evaluate the optimum parameters of the integral controllers …

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Unit Commitment Solution Based On Improved Particle Swarm Optimization Method, Ali Abbas, Afaneen Anwer Jul 2026

Unit Commitment Solution Based On Improved Particle Swarm Optimization Method, Ali Abbas, Afaneen Anwer

Engineering and Technology Journal

This paper presents an algorithm to solve the unit commitment problem using the intelligence technique based on improved Particle Swarm Optimization (IPSO) for establishing the optimal scheduling of the generating units in the electric power system with the lowest production cost during a specified time and subjected to all the constraints. The minimum production cost is calculated based on using the Lambda Iteration method. A conventional method was also used for solving the unit commitment problem using the Dynamic Programming method (DP). The two methods were tested on the 14-bus IEEE test system and the results of both methods were …

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Detection Of Covid-19 Based On Chest Medical Imaging And Artificial Intelligence Techniques, Nawres Alwash, Hussain Kareem Jul 2026

Detection Of Covid-19 Based On Chest Medical Imaging And Artificial Intelligence Techniques, Nawres Alwash, Hussain Kareem

Engineering and Technology Journal

The emergence of COVID-19 disease in the world has moved the wheel of scientific research in order to detect it in the best method, and the fastest of these methods is the use of Artificial Intelligence (AI) techniques to help medical professionals detect COVID-19. The proposed topic is aim to develop algorithm based on combination between imageprocessing techniques with artificial intelligence to diagnose COVID-19. The proposed algorithm consists of five stages to detect and classify COVID-19 from Computer Tomography (CT) images. These stages include; The first of these stages is to collect data from hospitals as real data and from …

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Design And Implementation Of The Temperature Sensor For Health Care Monitoring Based On Optical Fiber Technology, Dawood Ahmed, Alaa Ali, Shehab Kadhim, Sawsan Fandi Jul 2026

Design And Implementation Of The Temperature Sensor For Health Care Monitoring Based On Optical Fiber Technology, Dawood Ahmed, Alaa Ali, Shehab Kadhim, Sawsan Fandi

Engineering and Technology Journal

Human health is represented due to the measurement of vital signs. The basic vital signs are temperature, heart pulse rate, oxygen percentage in blood, blood pressure, etc. These signs are changes according to the physical and mental status of the individual. So measuring and monitoring those signs are very important. In this work, design and implementation of human Temperature Sensor are submitted. This is achieved using optical fiber technology. Two sensor diameters were tested; 125 µm and 60µm. The obtained results show a shifting in wavelength towards the red region due to temperature application. The submitted sensor has good sensitivity …

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Field Oriented Control Of Afpmsm For Electrical Vehicle Using Adaptive Neuro-Fuzzy Inference System (Anfis), Nagham Farhan, Abdulrahim Humod, Fadhil Hasan Jul 2026

Field Oriented Control Of Afpmsm For Electrical Vehicle Using Adaptive Neuro-Fuzzy Inference System (Anfis), Nagham Farhan, Abdulrahim Humod, Fadhil Hasan

Engineering and Technology Journal

Axial Flux Permanent Magnet Synchronous Motor (AFPMSM) are very attractive candidates for driving applications due to their high efficiency, high torque-to-weight ratio, high power density, small magnetic thickness, and simplicity of construction. On the other hand, AFPMSM produces undesirable torque ripple in the developed electromagnetic torque, affecting their output performance. An intelligent control method is proposed in this paper to reduce torque ripple and improve the dynamic performance of AFPMSM.  The vector control, employing the Field Oriented Control (FOC) technique, was used to improve the dynamic performance of the AFPMSM. The speed and torque controllers are achieved using the decoupling …

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Visual Performance Of Refractive Intraocular Lenses Within The Human Eye, Israa Ahmed, Ali Al-Hamdani Jul 2026

Visual Performance Of Refractive Intraocular Lenses Within The Human Eye, Israa Ahmed, Ali Al-Hamdani

Engineering and Technology Journal

The most effective treatment for cataracts is to remove the cloudy crystalline natural lens and implant an intraocular lens (IOL) in its place. These refractive (IOL) provide the same focusing as do the natural lens. Two refractive IOLs are designed and analyzed in this paper—these IOL are made of (PMMA, and Acrylic). The quality of the retinal image is analyzed and compared with the healthy eye, which is based on the (Liou-Brennan) eye model) LBEM). Polychromatic Point Spread Function (PSF), Modulation Transfer Function (MTF), spot diagram, Encircled Energy (EE), and monochromatic aberration are used as acceptable criteria within the Zemax …

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A Visual Enhancement Quality Of Digital Medical Image Based On Bat Optimization, Kholood Hussin, Ali Nahar, Hussain Khleaf Jul 2026

A Visual Enhancement Quality Of Digital Medical Image Based On Bat Optimization, Kholood Hussin, Ali Nahar, Hussain Khleaf

Engineering and Technology Journal

Improve medical image visualization is a critical preliminary step before further imagery processing like analyzing texture, extracting features, and segmentation. Imagery noises in medical images are frequently occurred as a consequence of different artificial processes such as acquisition, sending and receiving, and storing & retrieving processes. As a result, the quality of image visualization is degraded. Therefore, a de-noise process is important in order to maintain good image quality for medical purposes. In this paper, medical image enhancement aims to de-noise as much as possible while maintaining detailed features and edges. This work employed an optimization algorithm called "Bat" to …

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Image Processing Technique For Zinc Ion Sensing Using A Crystalline Fiber Sensor, Omar Hassan, Razi Al-Azawi, Bushra Mahdi Jul 2026

Image Processing Technique For Zinc Ion Sensing Using A Crystalline Fiber Sensor, Omar Hassan, Razi Al-Azawi, Bushra Mahdi

Engineering and Technology Journal

In this paper, crystalline optical fibers were used as a sensor for sensing the zinc ion concentration using the image processing technique. The image of the laser spot transmitted through the optical fiber crystal sensor for each concentration of zinc ion solution. The sensor was made by welding a piece of LMA-10 crystal optical fiber from both ends of a single-mode optical fiber to obtain an SM-PCF-SM type sensor. And it is possible to distinguish between one concentration and another by studying the change of the images obtained as a result of changing the concentration of the zinc ion. The …

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Enhancement Of An Iraqi Radial Distribution System Performance Using Multi-Object Particle Swarm Optimization, Hazim Alwazni, Shatha Al-Kubragyi Jul 2026

Enhancement Of An Iraqi Radial Distribution System Performance Using Multi-Object Particle Swarm Optimization, Hazim Alwazni, Shatha Al-Kubragyi

Engineering and Technology Journal

This paper proposes a Multi Object Particle Swarm Optimization (MOPSO) to find the optimal location and capacity of Distributed Generation and D-STATCOM device. The objective function has adapted with a multi -objectives function to improve voltage profile, the voltage stability and reduce the total power loss of the Radial Distribution System (RDS). Basically, the voltage stability index (VSI) has been used to pre-determine the optimal location of DG and D-STATCOM. Then, a MOPSO applies to achieve the suitable size of DG and D-STATCOM units with different load models. The proposed method is compared with other existing methods and it was …

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A Study Of Patient’S Pain Assessment Based On Facial Expression: Issues And Challenges, Elaf Saddam, Saad Mutashar, Wissam Ali Jul 2026

A Study Of Patient’S Pain Assessment Based On Facial Expression: Issues And Challenges, Elaf Saddam, Saad Mutashar, Wissam Ali

Engineering and Technology Journal

Pain is considered as an emotional experience and a restless feeling associated with tissue damage. When the interpretation begins in the brain, the sensation of pain occurs; a signal transmitted to the brain through the nerve fiber. Pain helps the body to stop further damage to the tissues. Since there are numerous ways to convey and feel pain, the perception of pain is special to all. Technology that promotes pain assessment is an urgent need to reduce restless feelings and suffering. This paper aims to demonstrate the issues and challenges facing the patient’s pain assessment based on facial expression. The …

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A Proposed Channel Estimation Based On Enhanced Sub-Carrier Index Modulation And Packet-Discrete Wavelet Transform To Minimize Bit Error Rate, Ansam Jabbar Jul 2026

A Proposed Channel Estimation Based On Enhanced Sub-Carrier Index Modulation And Packet-Discrete Wavelet Transform To Minimize Bit Error Rate, Ansam Jabbar

Engineering and Technology Journal

For Orthogonal Frequency Division Multiplexing (OFDM) and other communication systems, many estimating approaches have been developed to estimate the channel state information and lower the Bit Error Rate (BER). These estimating methods, however, are still subject to the influence of large peak powers compared to average powers. Reduced computational complexity is one of the most significant factors to consider while developing a new estimate algorithm. This study aims to provide a novel design of the Packet-Discrete Wavelet Transform (P-DWT) algorithm for channel estimation in wireless OFDM instead of the fast Fourier transform (FFT). It is presented to retrieve the code …

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Signaling Load Reduction In 5g Network And Beyond, Mohammed Waheed, Azzad Saeed, Thanaa Abd Jul 2026

Signaling Load Reduction In 5g Network And Beyond, Mohammed Waheed, Azzad Saeed, Thanaa Abd

Engineering and Technology Journal

A huge traffic flow in the next generation network is anticipated due to the rising in number of users and the new services that need low end-to-end latency causing a large signaling load on the Core Network (CN). In order to mitigate this issue, many revolutionary architectures have been proposed to reduce this burden such as Cloud Radio Access Network (C-RAN). In this paper, a new C-RAN distributed core network architecture has been proposed by splitting some CN functions and grouping them into one location with Base Band Units (BBUs). As a measure of testing the proposed architectures and by …

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Power Optimization Of Binary Multiplier Based On Fpga, Fadi Nasser, Ivan Hashim Jul 2026

Power Optimization Of Binary Multiplier Based On Fpga, Fadi Nasser, Ivan Hashim

Engineering and Technology Journal

In the VLSI circuits, power dissipation is a critical design parameter and it plays a vital role in the performance of different digital systems. The decrease in chip size along with the increase in chip density and complexity will increase the difficulty in designing higher performance and low power digital systems. Therefore, achieving a fast and low power system is the major concern of VLSI designers. Most of the digital systems have different math operations in their architectures. This paper focuses on the multiplication operation. Multiplication requires more iterations, long time, large area, and consumes high power of the digital …

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Design Of A Boost Converter With Mppt Algorithm For A Pv Generator Under Extreme Operating Conditions, Hussein Hussein, Ali Mahdi, Thamir Abdul-Wahhab Jul 2026

Design Of A Boost Converter With Mppt Algorithm For A Pv Generator Under Extreme Operating Conditions, Hussein Hussein, Ali Mahdi, Thamir Abdul-Wahhab

Engineering and Technology Journal

Photovoltaic generators (PVGs) are one of the most popular renewable energy sources (RESs), which achieve 47% of RES in microgrids. The aim of this work is to design and simulate a PVG system with a rated power of about 1,621 kW at the standard test conditions (STC), i.e., 1,000 W/m2 and 25ºC. The main components of the proposed PVG are 12 PV panels connected in series (the peak power of a PV panel at STC is about 135 W). A DC-DC boost converter is proposed for implementing the maximum power point tracking (MPPT) algorithm. The proposed MPPT algorithm is tested …

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Optimal Localization Of Upfc For Transmission Line Losses Minimizing Using Particle Swarm Optimization, Ihssan Amin, Dhari Mahmood, Ali Numan Jul 2026

Optimal Localization Of Upfc For Transmission Line Losses Minimizing Using Particle Swarm Optimization, Ihssan Amin, Dhari Mahmood, Ali Numan

Engineering and Technology Journal

Losses in the transmission line have a significant and growing impact on power systems around the world. Line losses overheat power lines, therefore electrical power systems require powerful processors and intelligent management methods. Flexible AC Transmission System (FACTS) device UPFC is one of the most important devices due to its ability to reduce total line losses that cause an increase in the transmission line capacity of the power system. In this paper, we used Particle Swarm Optimization (PSO) to determine the optimal location for the installation of UPFC device to minimize losses in the transmission line in the Iraqi international …

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Reducing Vibrations Generated In A Gas Turbine Model Ms9001e Used In South Baghdad Power Plant Station By Improving The Design Of Bearings With Damper, Alaa Abdulah, Muhannad Khalifa, Abdul Jabbar Hanfesh Jul 2026

Reducing Vibrations Generated In A Gas Turbine Model Ms9001e Used In South Baghdad Power Plant Station By Improving The Design Of Bearings With Damper, Alaa Abdulah, Muhannad Khalifa, Abdul Jabbar Hanfesh

Engineering and Technology Journal

Gas turbines are engines an energy plant makes use of for generating the rotary motion to show power generators. The gas turbine is largely a combustion engine for changing natural gas or different liquid fuels to rotational mechanical energy. Often, the gas turbine generates excessive noise or vibrations. In this work, the problem of vibrations occurrence in the gas turbine model MS9001E used in the south Baghdad power station is solved. This is done by making a groove in the bearing pad to increase the oil flow, replacing the bearing type with a tilt-pad bearing type with damper. The finite …

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Preparing Nanofluids (Al2o3) For Enhancement Performance Of Photovoltaic, Mohammed Saadoon, Ibtisam Hasan, Mohammed Mohammed Jul 2026

Preparing Nanofluids (Al2o3) For Enhancement Performance Of Photovoltaic, Mohammed Saadoon, Ibtisam Hasan, Mohammed Mohammed

Engineering and Technology Journal

Photovoltaic (PV) panels produce electrical energy comparable to the cumulative amount of PV radiation generated on surface of sun. The solar modules influence on temperature of PV panel and for work with its standard specifications in Iraqi environment can be used nanofluid for cooling PV and improve performance. The developed thermal model for proposed cooling method has shown on the way to be an efficient design tool that can help engineers to reduce the time and cost of experimental testing. The improvement in temperature reduction using direct flow technique at rear sides of PV panel achieved electrical and thermal performance …

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Experimental Study Of Air Ejector Performance To Cool Agricultural Products, Hassan Jawad, Qusay Abdul Ghafoor Jul 2026

Experimental Study Of Air Ejector Performance To Cool Agricultural Products, Hassan Jawad, Qusay Abdul Ghafoor

Engineering and Technology Journal

In this research, an ejector was designed and manufactured from brass metal as part of a cooling system to cool agricultural products, work of ejector is based on the Venturi principle. The primary fluid is air and steam of product is the secondary fluid, used the primary pressure (1, 8, 1) bar for the purpose of conducting the experiment. The ejector was manufactured from a number of interconnected parts to give the final shape. The performance of the ejector was analyzed theoretically, through operating of system evaporation of water take place in vessel  leads to cooling product at change operation …

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