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

Digital Commons Network™

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

2026

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 6271 - 6300 of 107073

Full-Text Articles in Entire DC Network

Utilizing Artificial Intelligence To Collect Pavement Surface Condition Data, Hasan H. Joni, Imzahim A. Alwan, Ghazwan A. Naji Aug 2026

Utilizing Artificial Intelligence To Collect Pavement Surface Condition Data, Hasan H. Joni, Imzahim A. Alwan, Ghazwan A. Naji

Engineering and Technology Journal

Nowadays, data collection mechanisms are developed from ancient methods, including visual surveying to modern methods, which rely on digital imaging devices and laser scanning. This is expensive, delay of the pavement maintenance management and consuming of time. In this paper, a robust method proposed for automotive detection of linear distresses from real life movies of Iraqi highways. In the suggested method, common types of cracks, potholes and raveling are distinguished and collected automatically using high speed imaging techniques. The data extracted using the suggested method can be used for selecting priority of management maintenance of country roads and making decisions …

Go to article

Identification And Management Of Major Risk Factors In Construction Of Healthcare Centers Projects, Khalil I. Wali, Mahmood M. Mahdi Aug 2026

Identification And Management Of Major Risk Factors In Construction Of Healthcare Centers Projects, Khalil I. Wali, Mahmood M. Mahdi

Engineering and Technology Journal

More attention is needed for healthcare centers projects and its development to change and improve the health situation in Iraq. The study of risk in this type of projects is essential to avoid the problems encountered during the project life cycle. This paper aimed to identify risk factors facing the construction of an advanced healthcare centers and to enhance the possible solutions based on the opinion of experts. For data collection, fifty-five risk factors were presented in a questionnaire form. The result showed that the major risk factor was government corruption, which has a direct influence on the economy and …

Go to article

Processing And Properties Of Za-27 Alloy Metal Matrix Hybrid Composite Reinforced With Nanonitrides, Fadhil A. Hashim, Niveen J. Abdulkader, Kateralnada F. Hisham Aug 2026

Processing And Properties Of Za-27 Alloy Metal Matrix Hybrid Composite Reinforced With Nanonitrides, Fadhil A. Hashim, Niveen J. Abdulkader, Kateralnada F. Hisham

Engineering and Technology Journal

In general, internal vibrations within the pipelines caused by fluids being passing through a pipeline system can cause. These pipeline system can damage by the sudden amplified vibrations that were not considered at the design of the system, and flow induced vibrations resonate with the pipes natural frequency. Therefore, it is important to predict and identify the pipeline system vibrations during its lifetime. In this study by using MATLAB code as a CFD solver, it studied the forced and free vibrations caused by fluid flows at Reynolds number ranged as 0 < Re < 2500 for laminar flow and ranged as 104 < Re < 105 for turbulent flow. The working fluid has chosen as of (Al2O3, TiO2, SiO2 and water) with different nanoparticle volume fraction of (0 to 2% vol.). These fluids flow in simply supported pipe with different lengths and diameters. The results presented the effect of pipe and fluid parameter upon the fluid critical velocity and fundamental natural frequencies. The results showed that the pipe natural frequency increased with increasing with decreasing the pipe length and diameter. In addition, it showed that the pipe natural frequency decreased when using the different nanoparticle depressed in the water and with increasing the volume fraction.

Go to article

Numerical Study Of Effect Of Using Nanofluids Flowing In Simply Supported Pipes On Vibrations Characteristics, Kadhum A. Jehhef, Mohamed A. Siba, Hayder S. Abdulamir Aug 2026

Numerical Study Of Effect Of Using Nanofluids Flowing In Simply Supported Pipes On Vibrations Characteristics, Kadhum A. Jehhef, Mohamed A. Siba, Hayder S. Abdulamir

Engineering and Technology Journal

In general, internal vibrations within the pipelines caused by fluids being passing through a pipeline system can cause. These pipeline system can damage by the sudden amplified vibrations that weren’t considered at the design of the system, and flow induced vibrations resonate with the pipes natural frequency. Therefore, it is important to predict and identify the pipeline system vibrations during its lifetime. In this study by using MATLAB code as a CFD solver, it studied the forced and free vibrations caused by fluid flows at Reynolds number ranged as 0 < Re < 2500 for laminar flow and ranged as 104 < Re < 105 for turbulent flow. The working fluid has chosen as of (Al2O3, TiO2, SiO2 and water) with different nanoparticle volume fraction of (0 to 2% vol.). These fluids flow in simply supported pipe with different lengths and diameters. The results presented the effect of pipe and fluid parameter upon the fluid critical velocity and fundamental natural frequencies. The results showed that the pipe natural frequency increased with increasing with decreasing the pipe length and diameter. In addition, it showed that the pipe natural frequency decreased when using the different nanoparticle depressed in the water and with increasing the volume fraction.

Go to article

The Effects Of Anodizing Process On The Corrosion Rate And Fatigue Life Of Aluminum Alloy 7075-T73, Ibrahim M. Al-Sudani, Samir A. Al-Rabii, Dhafir S. Al-Fattal Aug 2026

The Effects Of Anodizing Process On The Corrosion Rate And Fatigue Life Of Aluminum Alloy 7075-T73, Ibrahim M. Al-Sudani, Samir A. Al-Rabii, Dhafir S. Al-Fattal

Engineering and Technology Journal

This research aims to study the effect of using the anodizing process on the corrosion rate, mechanical properties as well as the fatigue life for aluminum alloy (7075-T73), which is one of the most commonly used aluminum alloy in production of aircrafts, vehicles and ships structures. The anodizing process was employed through using sulfuric acid for time (20) min in a salty atmosphere. The mechanical properties and fatigue life of the AA7075-T73 were obtained before and after the anodizing process. All the results were listed in detailed tables and figures for comparison purpose. Generally, these results showed a decrease in …

Go to article

Redrawing Operation A Star Shape From Cylindrical Shape Using Experimental And Fe Analysis, Waleed Kh. Jawad, Ali T. Ikal Aug 2026

Redrawing Operation A Star Shape From Cylindrical Shape Using Experimental And Fe Analysis, Waleed Kh. Jawad, Ali T. Ikal

Engineering and Technology Journal

The aim of this paper is to design and fabricate a star die and a cylindrical die to produce a star shape by redrawing the cylindrical shape and comparing it to the conventional method of producing a star cup drawn from the circular blank sheet using experimental (EXP) and finite element simulation (FES). The redrawing and drawing process was done to produce a star cup with the dimension of (41.5 × 34.69mm), and (30 mm). The finite element model is performed via mechanical APDL ANSYS18.0 to modulate the redrawing and drawing operation. The results of finite element analysis were compared …

Go to article

Experimental Investigation On Electrochemical Grinding (Ecg) For Stainless Steel 316, Abdullah J. Ghadban, Abbas F. Ibrahim Aug 2026

Experimental Investigation On Electrochemical Grinding (Ecg) For Stainless Steel 316, Abdullah J. Ghadban, Abbas F. Ibrahim

Engineering and Technology Journal

This research focuses on material removal rate (MRR) and surface roughness during electrochemical grinding (ECG) for stainless steel 316. The effect of applied current, electrolyte concentration, gap size and spindle speed on machining performances has been studied. Where applied current used are (10, 20, 30, 40) A, electrolyte concentration used (100, 150, 200, 250) g/l, gap size used (0.2, 0.3, 0.4, 0.5) mm and spindle speed used (75, 150, 180, 280) rpm. Through the Taguchi design based experimental study the characteristic features of the ECG process are discussed. Where the maximum MRR can be obtained at 40 A of the …

Go to article

2d Model To Investigate The Morphological And Hydraulic Changes Of Meanders, Jaafar S. Maatooq, Luay K. Hameed Aug 2026

2d Model To Investigate The Morphological And Hydraulic Changes Of Meanders, Jaafar S. Maatooq, Luay K. Hameed

Engineering and Technology Journal

River engineering investigations require some level of hydrodynamic and morphologic analysis. The detailed of the hydraulic and morphologic features through meander evolution can be recorded by the numerical model spatially and temporally. The Center for Computational Hydro-science and Engineering, two- dimensional model (CCHE2D V3.29) was adopted to investigate the hydraulic and morphologic changes through meander’s evolution. Through the experimental work, a series of experiments runs were carried out through combining different geometric and hydraulic parameters to produce different experiment conditions. These parameters are flow rate, bed slope, and different initial incised and wide channels for both rectangular and trapezoidal sections. …

Go to article

Membrane Bioreactor With External Side-Stream Membranes And High Cross Flow Velocity To Treat Municipal Wastewater, Majid A. Dixon, Talib R. Abbas, Mustafa H. Al-Furaiji, Raed H. Abed-Ali H. Abed-Ali Aug 2026

Membrane Bioreactor With External Side-Stream Membranes And High Cross Flow Velocity To Treat Municipal Wastewater, Majid A. Dixon, Talib R. Abbas, Mustafa H. Al-Furaiji, Raed H. Abed-Ali H. Abed-Ali

Engineering and Technology Journal

In this work, a pilot unit using side-stream MBR configuration was operated in BioFlow mode (i.e. no back pulse) and BioPulse mode (with intermittent back pulses) to treat municipal wastewater with relatively low MLSS. The results showed that the trans-membrane pressure (TMP) was less in the case of BioPulse over the whole period of system operation compared to that of BioFlow mode. However, the energy consumption per unit volume of permeated water is slightly higher in the case of BioFlow mode (3.4 kW.hr/m3) than that in the case of BioPulse mode (3.2 kW.hr/m3). Therefore, operation in BioPulse is preferable due …

Go to article

Evaluation Of Predictive Equations For Local Pier Scour In Cohesive Soils, Zahraa Hassan, Ibtisam Karim, Abdul- Al-Shukur Aug 2026

Evaluation Of Predictive Equations For Local Pier Scour In Cohesive Soils, Zahraa Hassan, Ibtisam Karim, Abdul- Al-Shukur

Engineering and Technology Journal

Wavelet analysis has become a powerful tool for denoising images. It represents a new way to achieve better noise reduction and increased contrast. Here,  experimentally demonstrate the abilities of the discrete wavelet transform with Daubechies basis functions for improving the quality of noisy images. In this research, two methods have been compared to modify the coefficients using a soft and hard threshold to improve the visual fineness of noisy images depending on the Root-Mean-Square error (RMS). The low RMS value and better noise reduction are found in the soft threshold methods based on Daubechies wavelet (db8) for the first image …

Go to article

Design Pid Neural Network Controller For Trajectory Tracking Of Differential Drive Mobile Robot Based On Pso, Mohamed Mohamed, Mohammed Hamza Aug 2026

Design Pid Neural Network Controller For Trajectory Tracking Of Differential Drive Mobile Robot Based On Pso, Mohamed Mohamed, Mohammed Hamza

Engineering and Technology Journal

This paper introduces a nonlinear (Proportional-Integral-Derivative Neural Network) (PID NN) controller for a differential wheeled mobile robot trajectory tracking problem. This neural controller is built based on the principles of neural network (NN) and the equation of conventional structure of PID controller and is applied on kinematic model of the mobile robot. The particle swarm optimization algorithm (PSO) is utilized to find the best values of three PID NN parameters and connection weights that minimize the error between the reference path and the actual path. The results illustrate that the PID NN controller has a satisfied ability to make the …

Go to article

Enhancement Of Surface Crack Density Produced By Edm Using Hybrid Machining, Saad Shather, Shukry Aghdeab, Waqass Khudier Aug 2026

Enhancement Of Surface Crack Density Produced By Edm Using Hybrid Machining, Saad Shather, Shukry Aghdeab, Waqass Khudier

Engineering and Technology Journal

The present work is aimed to improve the surface cracks density of electrical discharge machining (EDM) by Electrical Discharge Machining (EDM)/Electrochemical Machining (ECM) EDM/ECM hybrid process. A hybrid method of EDM-ECM combined processing involve EDM shaping as well as electrochemical machining (ECM) finishing, also, they are conducted in sequence one same machine tool, same electrode, yet on the different dielectric. In this study, the used workpiece material is the A2-Tool Steel material, while the electrode material is copper. The influence of controllable parameters could be identified via response surface methodology (RSM), these controllable effects include: pulse current, pulse on time, …

Go to article

Development Of Surface Roughness And Mechanical Properties Of Pmma Nanocomposites By Blending With Polymeric Materials, Hussein Sadeq, Sihama Salih, Auda Braihi Aug 2026

Development Of Surface Roughness And Mechanical Properties Of Pmma Nanocomposites By Blending With Polymeric Materials, Hussein Sadeq, Sihama Salih, Auda Braihi

Engineering and Technology Journal

This work aims to a development of mechanical properties of PMMA that is utilized in denture material, by using two types of polymers; blends (PMMA:2%NR) and (PMMA:2%SR) as a matrix materials strengthen with natural nanoparticles from the pomegranate peel powder (PPP) that were added at different weight fractions (0.0, 0.1%, 0.3%, 0.5% and 0.7%). Two groups of bio nanocomposites specimens were prepared, using (Hand Lay-Up) method. Experimental tests were carried out on surface roughness, hardness and wear rate as well as analyzing of FTIR test. The minimum values of surface roughness and wear rate were reached 1.51 nm and 0.317×10-8 …

Go to article

Design A Second Order Sliding Mode Controller For Electrical Servo Drive Systems, Shams Hashim, Ahmed Hamoudi Aug 2026

Design A Second Order Sliding Mode Controller For Electrical Servo Drive Systems, Shams Hashim, Ahmed Hamoudi

Engineering and Technology Journal

The aim of this paper is to design and study a powerful second-order sliding mode controller for electrical servo drive systems. The suggested controller can successfully overcome the chattering problem that was usually facing such systems during operation. The first (1-SMC) and second (2-SMC) sliding mode controllers are nonlinear controllers’ techniques capable of stabilizing the output of a plant, even though a disturbance and parameter uncertainty is present. The asymptotically stable is the significant property of 1-SMC as well as 2-SMC. Despite the robustness of the 1- SMC, in real-time but it suffers from a large settling time and a …

Go to article

State Space Parallelization Method For A 16-Bit Turbo Encoder, Maha Fleah, Qusay Al-Doori Aug 2026

State Space Parallelization Method For A 16-Bit Turbo Encoder, Maha Fleah, Qusay Al-Doori

Engineering and Technology Journal

Turbo codes are widely used in digital communication systems. Their ability to reach the Shannon channel capacity made it the choice for most of the communication systems. Due to the huge amount of the transmitted data, there is a need to increase the processing speed of the encoders. The researchers used the state space technique to enhance the throughput of the turbo encoder. They apply it to increase the turbo encoder throughput from one bit per cycle up to 8 bit per cycle. The researchers applied the state space method to a three-flip flop, eight state Recursive Systematic Convolution Code …

Go to article

Effect Of Weather Conditions On The Properties Of Cement Rendering, Ayad Mseer Aug 2026

Effect Of Weather Conditions On The Properties Of Cement Rendering, Ayad Mseer

Engineering and Technology Journal

The cement mortar used in rendering external walls, in Iraqi hot weather summer, suffers from appearance of many cracks on surface during and after its setting. So, this research aims to study the effect of different factors that can affect those cracks. The studied variables include mix proportions of mortar, grading of the used sand, method of curing, and environmental temperature (rendering during winter or summer). The rendering was laid on two types of walls build from clay bricks or concrete blocks. Tests were carried out on the mortar mixes of the different variables including flow test and drying shrinkage. …

Go to article

Study Compression, Hardness And Density Properties Of Pmma Reinforced By Natural Powder Used In Denture Base Applications, Jawad Oleiwi, Q. Hamad, N. Kadhim Aug 2026

Study Compression, Hardness And Density Properties Of Pmma Reinforced By Natural Powder Used In Denture Base Applications, Jawad Oleiwi, Q. Hamad, N. Kadhim

Engineering and Technology Journal

This research had been done to investigate the effect of adding natural powder of Pistachio Shell to PMMA, which popularly used in denture applications. The powder added in different weights fraction (3%, 6%, 9%, and 12%), and different average particle size (53µm, 106 µm, 150 µm, and 212µm %), and studying Compression Strength, Surface Hardness, and Density properties. Hand Lay-Up represented the method used to prepare the specimens in this research. The results were statistically analyzed by SPSS (one-way ANOVA) to determine the mean value and showed a significant difference for each particle size. The highest value of compression strength …

Go to article

The Synergic Effect Of Fly Ash And High Reactivity Attapulgite In Ternary Blended Cement, Shubbar Al-Obaidey Aug 2026

The Synergic Effect Of Fly Ash And High Reactivity Attapulgite In Ternary Blended Cement, Shubbar Al-Obaidey

Engineering and Technology Journal

The main objective is to study the synergic effect of fly ash (FA) and high reactivity Attapulgite (HRA) together in ternary blended cement of (OPC+FA+HRA) and evaluate the efficiency factor of FA and HRA in binary blended cement and (FA+HRA) in ternary blended cement. To achieve this objective compressive strength of binary blended cement mixes of (OPC+FA) with FA replacement percentages of (20 %, 30% and 40%), (OPC+HRA) with HRA replacement percentages of (5 and 10%) by weight of cement and ternary blended cement mixes of (OPC+FA+5% and/or 10%HRA). Were tested and compared with that of reference mix at ages …

Go to article

Numerical Investigations On Seismic Response Of Structures Under The Effect Of Infinite Boundary Of Soil-Structure Interaction, Qais Hasan, Saad Al-Wakel, Zahraa Zaidan Aug 2026

Numerical Investigations On Seismic Response Of Structures Under The Effect Of Infinite Boundary Of Soil-Structure Interaction, Qais Hasan, Saad Al-Wakel, Zahraa Zaidan

Engineering and Technology Journal

The damage caused by large earthquakes is not only due to structures but also due to the soil failure, where the dynamic response varies considerably from the fixed base state because of the interaction between the ground and the structure. The main objective of this paper is to study the effect of the infinitely extended soil on the dynamic response of the structure. A three-dimensional dynamic analysis of reinforced concrete buildingconsidering the effect of soil-structure interaction is performed. Building with a different number of stories rest on soil with various characteristics have been taken into consideration. For simulation of wave …

Go to article

Experimental Study Of Vibration On Pipe Conveying Fluid At Different End Conditions For Different Fluid Temperatures, Kayser Ameen, Mustafa Al-Dulaimi, Ali Hatem Aug 2026

Experimental Study Of Vibration On Pipe Conveying Fluid At Different End Conditions For Different Fluid Temperatures, Kayser Ameen, Mustafa Al-Dulaimi, Ali Hatem

Engineering and Technology Journal

Dynamic behavior of a copper pipe conveying fluid at different fluid temperatures is investigated experimentally. Three types of supports are used, which are simply support - simply support, fixed – fixed support and fixed – free support. The effect of the support's types on the frequency and the amplitude of vibration for the pipe conveying the fluid are studied for various flow temperature. These vibration characteristics were tested at temperatures 50, 65 and 80 ºC

Go to article

Numerical Study Of Bond Stress-Slip Relationship In Large Scale Reactive Powder Concrete Beams, Eyad Sayhood, Sameh Tobeia, Ammar Ali Aug 2026

Numerical Study Of Bond Stress-Slip Relationship In Large Scale Reactive Powder Concrete Beams, Eyad Sayhood, Sameh Tobeia, Ammar Ali

Engineering and Technology Journal

As the reactive powder concrete (RPC) represents one of the ultra-high performance concrete types that recently used in public works and in the presence of several attempts that aims to examine the behavior of RPC, this work aims to theoretically study the bond stress between RPC and steel bars and the corresponding slip for large reactive powder concrete beams by using finite element models done by ANSYS 16.1 software. Where, these numerical models were verified through several comparisons between their results, and the experimental one from previous work, in which good agreement were achieved. The effects of several parameters on …

Go to article

Influence Of Steel Fiber And Spacing Of Stirrups On The Torsion Capacity Of Hybrid Beams, Alyaa Mohammed, Qais Hasan, Kaiss Sarsam Aug 2026

Influence Of Steel Fiber And Spacing Of Stirrups On The Torsion Capacity Of Hybrid Beams, Alyaa Mohammed, Qais Hasan, Kaiss Sarsam

Engineering and Technology Journal

This paper investigates experimentally the torsional behaviour of hybrid reinforced concrete beams composed of reactive powder concrete (RPC) at the outer edges of the cross-section and conventional concrete (CC) at the inner parts of the cross-section. Hybrid reinforced concrete members are used extensively to deal with the members strength requirements related to flexural, shear and torsion in structural systems. The torsion failure is undesirable because of its brittle nature, it is obligatory to avoid this kind of failure in the earthquake areas. Seven reinforced concrete beams, with dimensions (100X200X1500 mm), the interior dimensions of hybrid beams of the cross-sectional area …

Go to article

Ethical Responsibility In The Practice Of Architecture, Abdullah Almaamouri Aug 2026

Ethical Responsibility In The Practice Of Architecture, Abdullah Almaamouri

Engineering and Technology Journal

The research deals with the concept of ethical responsibility as one of the most influential concepts in the process of practicing architecture. It is defined as “systems of ethical principles and engineering rules governing the architect in making decisions of design practice, making them sound, preventing them from making mistakes during the stages of design, and the maintenance “by the commitment to them, result in creative architectural texts benefit the individual and society,” and thus determine the research problem in (Lack of cognitive perception of the role of moral responsibility in the practice of architecture). Therefore, the research aims at …

Go to article

An Experimental Investigation On Thermal Efficiency Of Flat Plate Tube Solar Collector Using Nanofluid With Solar Tracking Mechanism, Saad Hamidi Aug 2026

An Experimental Investigation On Thermal Efficiency Of Flat Plate Tube Solar Collector Using Nanofluid With Solar Tracking Mechanism, Saad Hamidi

Engineering and Technology Journal

In the present work, flat-plate solar collector (FPSC) in terms of various parameters as well as in respect of lower (Area of FPSC, volume fraction concentration of nanofluids, and mass flow rate) has been studied in this work. The FPSC has been fabricated with 0.192 m2, Dioxide silicon SiO2 (40nm) with the volume fraction of SiO2+Distilled water (0.05, 0.075, and 0.1%) and varying of flow rate (10, 15, 20L/h). These technological devices operate under forced circulation mode of fluid under varying climate conditions. The tracking mechanism has been used in the experiment of FPSC for tracking the sun position during …

Go to article

Deep Cnn Based Skin Lesion Image Denoising And Segmentation Using Active Contour Method, Hadeel Abdullah, Hala Abduljaleel Aug 2026

Deep Cnn Based Skin Lesion Image Denoising And Segmentation Using Active Contour Method, Hadeel Abdullah, Hala Abduljaleel

Engineering and Technology Journal

Automatic skin lesion segmentation on skin images is an essential component in diagnosing skin cancer. Image de-noising in skin cancer lesion is a description of processing image which refers to image restoration techniques to develop an image in predefined touch. Then de-noising is the crucial step of image processing to restore the right quality image after that which can use in many processes like segmentation, detection. This work proposes a new technique for skin lesion tumor denoising and segmentation. Initially, using Deep Convolution Neural Network (CNN) to eliminate noise and undesired structures for the images. Then, a new mechanism is …

Go to article

Synthesis And Characterization Of Chitosan- Polyvinyl Alcohol Blend Modified By Genipin And Nanohydroxyapatite For Bone Tissue Engineering, Ishraq Kadhim, Zuhair Abdul Ameer, Assel Alzubaidi Aug 2026

Synthesis And Characterization Of Chitosan- Polyvinyl Alcohol Blend Modified By Genipin And Nanohydroxyapatite For Bone Tissue Engineering, Ishraq Kadhim, Zuhair Abdul Ameer, Assel Alzubaidi

Engineering and Technology Journal

Use nanohydroxyapatite into the polymeric matrix as bioactive material for bone tissue engineering has enormous therapeutic potential because beneficial properties biocompatibility, biodegradability, and consider a major inorganic constituent of the bone matrix. The blended films of Chitosan and Polyvinyl alcohol with Genipin as cross-link agent were studied with and without addition Nanohydroxyapatite. Samples were prepared by solvent casting. The resulting films blended composite were characterized by Fourier transfer infrared (FTIR) spectroscopy, degradation behavior, swelling degree and tensile strength. Degree of swelling, and weight loss of the films blended composite was decreased with an increase of genipin and nanohydroxyapatie concentrations while …

Go to article

Toxic Effect Of Inhalation Polyurethane In Lungs, Liver, And Kidneys Fume In White Male Mice, Sura Ahmed, Amel Hussain Aug 2026

Toxic Effect Of Inhalation Polyurethane In Lungs, Liver, And Kidneys Fume In White Male Mice, Sura Ahmed, Amel Hussain

Engineering and Technology Journal

In this study, the toxic effect of exposure to inhalation of polyurethane resin fumes by White Male Mice was evaluated over 36 days. The study included the use of the inhalation method in an exposition room filled with the fume chemical to a period of 10, 20 and 40 minutes per day, and were then transferred to the fumigant section of the animal house. The organs of the mice was dissected, and the change of the weight determined. The lungs, liver, kidneys tissues of the exposed mice showed typical structural structures when compared with the control group. The liver cells …

Go to article

Investigation The Creep-Fatigue Behavior And A.C. Electrical Conductivity Of Aa 6061 Under Ultrasonic Peening, Hussain Al-Alkawi, Ahmed Reja, Mahmood Abbas Aug 2026

Investigation The Creep-Fatigue Behavior And A.C. Electrical Conductivity Of Aa 6061 Under Ultrasonic Peening, Hussain Al-Alkawi, Ahmed Reja, Mahmood Abbas

Engineering and Technology Journal

Ultrasonic peening is an innovative surface improvement process used to increase the resistance of aircraft metals and enhance high cycle fatigue life. The process creates residual compressive stresses deep into part surfaces. These compressive surface stresses inhibit the initiation and propagation of fatigue cracks. Aluminum alloys are relatively new materials used in aerospace, marine, automobile, and bridges due to low weight, which has significant advantages compared to the other materials. A major concern in the design of Aluminum alloys subjected to variable loads is fatigue strength and life. In this paper mechanical properties, fatigue strength, fatigue life and A.C.. electrical …

Go to article

Modelling The Ecosystem Behavior Of Abu-Ziriq Marsh In South Of Iraq Under Different Water Discharges Scenarios, Fuaad Al-Yaseen, Mustafa Al-Mukhtar Aug 2026

Modelling The Ecosystem Behavior Of Abu-Ziriq Marsh In South Of Iraq Under Different Water Discharges Scenarios, Fuaad Al-Yaseen, Mustafa Al-Mukhtar

Engineering and Technology Journal

The marshlands are of fundamental importance to Iraq, a unique ecosystem providing local inhabitants with an essential source of habitat and livelihoods. This paper aims to study the ecosystem behavior of Abu-Ziriq Marsh in the south of Iraq under different scenarios using the Ecosystem Functions Model Program (HEC-EFM) and Hydrologic Engineering Center Data Storage System Visual Utility Engine (HEC-DSSVue). To this end, data was converted from tri-monthly and semi-monthly to daily data using the HEC-DSSVue program. The daily data natural(flow, stage) was used for five years between 2013 and 2018. The prediction process was evaluated using three criteria: correlation coefficient …

Go to article

Structural And Morphological Investigation Of Cr2o3/Wo3oxides Films Composite Using Modified Spray Pyrolysis Technique, Zena Salman, Farhad Othman, Alaa Abdul-Hamed Aug 2026

Structural And Morphological Investigation Of Cr2o3/Wo3oxides Films Composite Using Modified Spray Pyrolysis Technique, Zena Salman, Farhad Othman, Alaa Abdul-Hamed

Engineering and Technology Journal

Cr2O3/WO3 oxides film composite was successfully synthesized via advanced controlled chemical spray pyrolysis deposition technique using two nozzles. Two solutions of tungstic acid and chromium chloride was sprayed separately at various ratios of (W: Cr) at the same time on a silicon substrate at 500 °C, the film then heat-treated at 400 °C for the 60s. The crystal structure, microstructure and morphology properties of prepared films were studied. Based on characterization techniques, crystallized Cr2O3/WO3 mixed oxides films were investigated by X-ray diffraction after the annealing process, with film thickness of about 500 nm. The SEM and AFM revealed that rough …

Go to article

First Prev Next Last