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Difference And Contradiction Of Critique Methods To Produce Styles Of Modulation In Architecture: (Architect Peter Eisenman As Example), Basim Al-Majidi, Baneen Al-Saadawi Aug 2026

Difference And Contradiction Of Critique Methods To Produce Styles Of Modulation In Architecture: (Architect Peter Eisenman As Example), Basim Al-Majidi, Baneen Al-Saadawi

Engineering and Technology Journal

Rapid changes and developments have brought contemporary intellectual theories and different and diverse ties to highlight the different and multiple concepts contribute to the definition of any philosophy and intellect, which are frequent and mutant methods and demonstrations of the same values and origins which in turn describe the state of existence, continuity, permanence and human communication, the most important concepts are Difference and contradiction as the basis of everything, and without them there is no existence or knowledge. most contemporary studies focused on the different critical methods linked to the semantics and meanings that express architecture on the one …

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Optimization Of Heat Treatment Parameters For The Tensile Properties Of Medium Carbon Steel, Abbas Hussein, Laith Abbas, Wisam Hasan Aug 2026

Optimization Of Heat Treatment Parameters For The Tensile Properties Of Medium Carbon Steel, Abbas Hussein, Laith Abbas, Wisam Hasan

Engineering and Technology Journal

The purpose of this study is designate quenching and tempering heat treatment by using Taguchi technique to determination optimal factors of heat treatment (tempering temperature, percentage of nanoparticles, type of base media, nanoparticles type and tempering time)for increasing ultimate tensile strength, yield strength and ductility properties of medium carbon steel. An (L18) orthogonal array was chosen for the design of experiment. The optimum process parameters were determined by using signal-to-noise ratio (larger is better) criterion. The importance levels of process parameters on tensile properties were obtained by using analysis of variance, which applied with the help of (Minitab18) software. Percentage …

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Synthesis Of Multi-Walled Carbon Nanotubes Decorated With Zinc Oxide Nanoparticles For Removal Of Pathogenic Bacterial, Adawiya Haider, Riyad Al- Anbari, Hayder Mohammed, Duha Ahmed Ahmed Aug 2026

Synthesis Of Multi-Walled Carbon Nanotubes Decorated With Zinc Oxide Nanoparticles For Removal Of Pathogenic Bacterial, Adawiya Haider, Riyad Al- Anbari, Hayder Mohammed, Duha Ahmed Ahmed

Engineering and Technology Journal

A series of Zinc Oxide Nanoparticles (ZnONPs)-functionalized Multi-Walled Carbon Nanotubes (F-MWCNTs) Nano composites were developed as antibacterial. In this study, chemical oxidation of pristine MWCNTs were carried out with a mixture of strong acids (3H2SO4 98%:1 HNO3 65%).The F-MWCNTs were used as templates to prepare hybrid material like ZnONPs decorated F-MWCNTs. Pristine MWCNTs, F-MWCNTs and (ZnONPs/F-MWCNTs) Nano composites powder were investigated using Fourier Transform Infrared spectroscopy (FTIR) and Scanning Electron Microscopy (SEM). Anti-bacterial activity has been carried out using standard agar dilution (plate count) method against Escherichia coli (E. coli). This study demonstrated that (ZnONPs/F-MWCNTs) Nano composite has a powerful …

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Preparation And Characterization Of Tio2 Nanoparticles And Its Applications As Antibacterial Agents, Ghadah Kahdim, Riyad Al-Anbari, Adawiay Haider Aug 2026

Preparation And Characterization Of Tio2 Nanoparticles And Its Applications As Antibacterial Agents, Ghadah Kahdim, Riyad Al-Anbari, Adawiay Haider

Engineering and Technology Journal

TiO2NP’s were synthesis by sol-gel method at different calcination temperatures. The prepared TiO2NP’s were characterized by X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), and UV-Vis spectrophotometer. The antimicrobial activities of the prepared TiO2NP’s were investigative for two kinds of bacteria, (Gram-negative and Gram-positive bacterium. XRD results shows that the type of the TiO2 structure was anatase (A) at low temperatures, rutile (R) with rise of calcination temperature (Tc) into 800 ᵒC and mixed phases .SEM demonstrated that the size of nanoparticles seems larger and the accumulations appears clearly with raise calcinations temperature. The optical properties measured by the UV-Vis. Spectroscopy …

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Effect Of Natural Fibers On Mechanical Properties Of Polymer Composites, Ruaa Abdulraheem Aug 2026

Effect Of Natural Fibers On Mechanical Properties Of Polymer Composites, Ruaa Abdulraheem

Engineering and Technology Journal

The mechanical behavior of coconut shell (CS) particulate epoxy composites was concentrated on keeping in mind the end goal to create designing materials for modern application. Minute of the support with various weight portions (5, 10, 15, 20 and 25) wt%. Epoxy and composite materials were prepared by hand lay-up molding. The physical properties are thermal conductivity while the mechanical properties were hardness, tensile properties, impact properties, and flexural strength. The resulting composites of thermal conductivity 0.1005 W∕ m.c° that is lower than pure epoxy and commonplace materials utilized for home-structures. As for the mechanical properties, composite materials with (Epoxy+25%CS) …

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Study The Effect Of Micro Caco3 And Sio2 And Their Mixture On Properties Of High Strength Concrete, Ahmed Al Ghaban, Aseel Al Zubaidi, Zahraa Jawad Aug 2026

Study The Effect Of Micro Caco3 And Sio2 And Their Mixture On Properties Of High Strength Concrete, Ahmed Al Ghaban, Aseel Al Zubaidi, Zahraa Jawad

Engineering and Technology Journal

This paper investigated the effect of incorporating two types of micro particles micro CaCO3 and micro SiO2 on mechanical properties and durability of concrete. Micro materials were added in four different dosages of 1%, 2%, 3% and 4% by weight as partial replacement of cement in concrete mixture. Mechanical properties of hardened concrete (compressive strength, flexural strength and split tensile strength) have been done after 28 days of water curing. In addition, water absorption test was carrying out for obtaining the durability properties of concrete specimen. Binary combination of micro CaCO3 + micro SiO2 were also studied the combined effect …

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Studies On Characterization Of Sawdust For Application In A Gasification Process For Syngas Production, Abdul Hameed Al-Obaidy, Riyad Al-Anbari, Hussein Kadhim Aug 2026

Studies On Characterization Of Sawdust For Application In A Gasification Process For Syngas Production, Abdul Hameed Al-Obaidy, Riyad Al-Anbari, Hussein Kadhim

Engineering and Technology Journal

Quintessential characteristics of sawdust were investigated in this study as well as to to investigate the ability of reed as a Production of gases via gasification technique by using special gasifier made for this purpose. The physical properties of solid waste results showed that sawdust were suitable for using in production of syngas due to its high volatile matter and cellulose content and low moisture content. The CHNS analysis results showed that high content of hydrogen for sawdust has generated higher amount of syngas heat value, while gravimetric analysis results showed that high cellulose and hemicellulose content gave higher concentration …

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Design And Performance Analysis Of Contact Lens Materials For Chromatic And Polychromatic Aberrations Correction, Ali Al-Hamdani Aug 2026

Design And Performance Analysis Of Contact Lens Materials For Chromatic And Polychromatic Aberrations Correction, Ali Al-Hamdani

Engineering and Technology Journal

A material scientists worldwide has investigated optical plastics as alternative materials for glasses that have been widely used over the years. Plastics have numerous advantages over glasses in optical applications, especially in ophthalmic applications. Recently, researchers have developed new polymer materials to satisfy the ophthalmic industry requirements. Mechanical, chemical and physical tests were conducted to determine the polymers for contact lenses. In this study, the optical properties of polymers were evaluated and analyzed by using Zemax program depending on Liou & Brennan model. The effect of achromatic and polychromatic light on the performance of the polymers contact lenses was investigated. …

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Biosorption Technique For Naphthalene Removal From Aqueous Solution By Chara Sp., Algae, Talib Albayati, Khairi Kalash Aug 2026

Biosorption Technique For Naphthalene Removal From Aqueous Solution By Chara Sp., Algae, Talib Albayati, Khairi Kalash

Engineering and Technology Journal

These instructions give guidelines for preparing the article to be published in the Engineering& Technology Journal using MS World 7.0 or later. A short abstract should open the paper and give a clear indication of the aims, scope and the main results of the paper. The reader may decide from the abstract that the full text is of particular interest or not. The author should consider that the abstract is an indication of the scope of the topic and the obtained results and not a way of condensing the problem in a few words for quick reading. It should be …

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A Compact Dual-Band Bpf Based On Open Loop Resonator For Satellite Communication Applications, Ali Salim, Aya Alkhafaji, Mushtaq Alqaisy Aug 2026

A Compact Dual-Band Bpf Based On Open Loop Resonator For Satellite Communication Applications, Ali Salim, Aya Alkhafaji, Mushtaq Alqaisy

Engineering and Technology Journal

In this paper, a new filter is constructed by inserting two slots in the form of rectangular open loop resonator with folded ends. The insertion of these slots has successfully led to the compact size and the dual bandwidth behavior. The overall filter dimensions are 16×12 mm2, which correspond to 0.61λg × 0.4λg using a substrate with Rogers Ro 4003 with a relative permittivity of 3.38 and thickness of 1.0 mm. The resulting structure exhibits a dual-band behavior. The first passband has a center frequency of 6.2 GHz with FBW of 16.833% and input reflection coefficient better than -30 dB …

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Investigation And Analysis Of Force Production Mechanism For Partitioned Stator Flux Reversal Permanent Magnet Linear Machine, Ahlam Shuraiji, Zi Zhu Aug 2026

Investigation And Analysis Of Force Production Mechanism For Partitioned Stator Flux Reversal Permanent Magnet Linear Machine, Ahlam Shuraiji, Zi Zhu

Engineering and Technology Journal

In this paper, the force production mechanism in partitioned stator flux reversal permanent magnet (PS-FRPM) linear machine will be investigated. Since the PS-FRPM linear machine has both armature windings and the permanent magnet (PM) in one machine part and the other part is passive; thereby, the force production mechanism in conventional PM linear machine, is not valid for such a machine. In order to determine both magnetic and electrical loading frequency components, which result in production the electromagnetic force a spatial harmonic analysis is adapted. It has been found that the electromagnetic force in the PS-FRPM linear machine is produced …

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Mechanical And Acoustic Properties Of Composite Material In A Secondary Roof To Reducing The Cooling Load, Nassr Hussein, Aseel Mohammed, Hatam Kadhom Aug 2026

Mechanical And Acoustic Properties Of Composite Material In A Secondary Roof To Reducing The Cooling Load, Nassr Hussein, Aseel Mohammed, Hatam Kadhom

Engineering and Technology Journal

The present investigation aims to perform experimental study to show the feasibility of application composite materials as secondary roofs, as well as their capability for reducing cooling load in building. Moreover, compare some of their mechanical properties and acoustic insulation with conventional secondary roofs. Three basic models, which are common, were chosen for the construction of buildings' roofs in Baghdad (concrete and concrete tiles as basic components of the first model, brick and clay tiles as basic components of the second model and brick and normal tiles as basic components of the third model). In addition, three composite materials were …

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Investigation Of Addition Different Fibers On The Performance Of Cement Mortar, Ahmed Al-Ghaban, Hussein Jaber, Aya Shaher Aug 2026

Investigation Of Addition Different Fibers On The Performance Of Cement Mortar, Ahmed Al-Ghaban, Hussein Jaber, Aya Shaher

Engineering and Technology Journal

This work presents an investigation of possibility incorporate of synthetic fibers (glass, nylon and carbon) at two states (short: 1cm, long: 5cm) effects on the mechanical properties of mortars (cement: sand composition (1:3)). Fibers materials used at different weight percentages ranged of (0, 0.4, 0.8, and 1.2) wt%. Density, water absorption, porosity, thermal conductivity, compressive strength and flexural strength experimentally investigated for mortar specimens after curing for (28 days). The results showed that the incorporation of these fiber materials improvement mechanical and physical tests for all reinforced samples with short and long fibers, and that the highest value of the …

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Synthesis And Characterization Nano Structure Of Mno2 Via Chemical Method, Khitam Shaker, Alyaa Abdalsalm Aug 2026

Synthesis And Characterization Nano Structure Of Mno2 Via Chemical Method, Khitam Shaker, Alyaa Abdalsalm

Engineering and Technology Journal

In the current research, Magnesium oxide II (MnO2) nanostructures were prepared by chemical route from hydro manganese chloride salt using Potassium hydroxide as reducing agent. X-Ray diffraction (XRD), SEM and Fourier transformation infrared (FTIR) used to characterize both particle size and structure of MnO2 nanoparticles. XRD results confirmed impurity of synthesized powder with α-MnO2 as predominant phase. The average particle size of manganese dioxide was in the range 25- 30 nm. Photographs of scanning electron microscope (SEM) showed two hierarchical structures, cluster agglomeration and chain appearance.

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A Proposed Method For The Sound Recognition Process, Azad Kareem, Marwa Jassim, Mustafa Ali Aug 2026

A Proposed Method For The Sound Recognition Process, Azad Kareem, Marwa Jassim, Mustafa Ali

Engineering and Technology Journal

One of the most important issues in the signal-processing world is the issue of sounds differentiations. It has many applications in identifying the sources of the sounds, and many researches nowadays serves in this field and all of them looking for the best way to have a high accuracy implementation of the discrimination process. Sounds can be recognized under suitable recording conditions by converting the sound signal from time to frequency domain (because Sound signal of a source differs from other sources by the frequency contents. This property serves to differentiate between sounds, and differences become visually apparent when the …

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Performance Study Of Solar Air Heater With Thermally Conducted Multi V Shaped Baffles And Ribs, Jalal Jalil, Ghaydaa Salih, Yosif Madh Aug 2026

Performance Study Of Solar Air Heater With Thermally Conducted Multi V Shaped Baffles And Ribs, Jalal Jalil, Ghaydaa Salih, Yosif Madh

Engineering and Technology Journal

In this study, solar air heater with thermally conducted multi V shaped baffles and with same baffles and ribs are investigated experimentally and numerically to improve the performance of conventional air heaters. Numerically, steady state 3D forced convection turbulent model is used to solve Navier Stokes and energy equations of airflow inside rectangular duct of solar air heater. The code was validated by comparing the numerical result with experimental results and the agreement seems acceptable. The numerical studies were extended to study the cases of flat plate and straight baffles solar air heater. From experimental and numerical studies, it was …

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Modeling Of Continues Laser Welding For Ti-6al-4v Alloys Using Comsol Multiphysics Software, Haneen Salman, Kadhim Hubeatir, Mohanned Al-Khafaji Aug 2026

Modeling Of Continues Laser Welding For Ti-6al-4v Alloys Using Comsol Multiphysics Software, Haneen Salman, Kadhim Hubeatir, Mohanned Al-Khafaji

Engineering and Technology Journal

A model for laser welding process using finite element method, the model was used for this work using the COMSOL Multiphysics software to predict the distribution of the temperature in the joint and to show the four welding zones (the melting zone, partial melting zone, zone affected by heat, and the material base). CO2 continues (CW) Laser used in the model welding thin sheets of titanium alloy Ti-6Al-4V. The results of this simulation work have been compared with the experimental works to show good agreement.

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Effect Of High Temperature On Mechanical Properties Of Rubberized Concrete Using Recycled Tire Rubber As Fine Aggregate Replacement, Wrya Abdullah, Mohamed Abdulkadir, Muhammad Muhammad Aug 2026

Effect Of High Temperature On Mechanical Properties Of Rubberized Concrete Using Recycled Tire Rubber As Fine Aggregate Replacement, Wrya Abdullah, Mohamed Abdulkadir, Muhammad Muhammad

Engineering and Technology Journal

Effects of various elevated heating temperatures on mechanical properties of normal concrete containing recycled tire rubber as a fine aggregate (RTRFA) has been investigated in this paper. Five different concrete mixes were prepared in the laboratory. In each mix Ordinary Portland Cement, natural coarse and fine aggregate, water and RTRFA are used with fine aggregate replacement ratios (0%, 6%, 12%, 18% and 24%) by weight. In the laboratory, 60 cylindrical specimens (100mm diameter × 200mm high) and 60 cubic specimens (150×150×150mm3) were prepared. The concrete specimens were exposed to four different heating temperatures: Control (Not heated), 200, 400, and 600°C, …

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Drag Reduction Study Of Xathan Gum With Polydiallyldimethylammonium Chloride (Pddac) Solutions In Turbulent Flow, Zainab Yousif Aug 2026

Drag Reduction Study Of Xathan Gum With Polydiallyldimethylammonium Chloride (Pddac) Solutions In Turbulent Flow, Zainab Yousif

Engineering and Technology Journal

The transportation of liquids through pipelines is attributed with high-energy consumption due to the turbulent nature of their transportation. Low concentrations of polymeric additives were proven effective flow enhancing agent when injected into these pipelines due to its viscoelastic property capable of suppressing the turbulent structures; however, the mechanical degradation of polymers is a disadvantage, which can be controlled efficiently by using complex in a surfactant- polymer interface. In this presented work, turbulent drag reduction (DR) efficacy of anionic Xathan gum and nonionic surfactant (PDDAC) regarding the surfactant -polymer interface was studied using a rotating disk apparatus (RDA) technique and …

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A Comparative Analysis For Congestion Mechanism In Coap And Cocoa, Hamid Hasan, Ahmed Ahmed Aug 2026

A Comparative Analysis For Congestion Mechanism In Coap And Cocoa, Hamid Hasan, Ahmed Ahmed

Engineering and Technology Journal

Internet of things (IoT) is the paradigm for internetworking devices for data exchange and control. One of the important problems facing the IoT networks is the congestion; many researchers have discussed this problem. In this research, a comparison between two congestion control mechanisms used for internet of things the (CoAP and CoCoA) is presented. The cooja simulator was used for simulating different topologies and scenarios and the packets transmitted was captured using wireshak utility program. The captured packets were analyzed using MATLAB tools. The analysis showed that the CoCoA outperform CoAP in terms of goodput, number of dropped packets and …

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Developing Of Reliability-Centered Maintenance Methodology In Second Power Plant Of South Baghdad, Amjad Abdulghafour, Ammar Abdulwahed Aug 2026

Developing Of Reliability-Centered Maintenance Methodology In Second Power Plant Of South Baghdad, Amjad Abdulghafour, Ammar Abdulwahed

Engineering and Technology Journal

Electric equipments of power station must be operated in the state of high reliability with its responsibility in the seamless power supply. Maintenance is one of the important and most costly phases in the lifecycle of any power generation systems, to improve maintenance management and system reliability and maintain the continuity of work of the system. Reliability-Centered Maintenance (RCM) is one of the most recent maintenance techniques. In this research, an enhanced RCM methodology based on quantitative relationships implemented at system component level and the overall system reliability was applied to identify the distribution components that are critical to system …

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Characterization Of Aa 6061–Alloy Composites Reinforced By Al2o3 Nano Particles Obtained By Stir Casting, Hussain Al Alkawi, Abdul Owaid, Batool H. Aug 2026

Characterization Of Aa 6061–Alloy Composites Reinforced By Al2o3 Nano Particles Obtained By Stir Casting, Hussain Al Alkawi, Abdul Owaid, Batool H.

Engineering and Technology Journal

The aim of this work is generated a Nano materials having good mechanical properties for 6061AA-alloy.Fivewt% of Nano particles (Al2O3) (20-30nm grain size) were adoptees (1, 1.5, 2, 2.5 and 3wt% AL2O3).The Nano composites were manufactured by stir casting technique. The mechanical properties of Nano composites were obtained at room temperature and was found that the matrix hardness is improved by 35.36%, matrix ultimate by107%, yield by36.84% and ductility by 12% at 1.5wt% AL2O3.Also it was obtained that all the mechanical properties of the Nano composites are higher than that of metal matrix. The above improvements are due to less …

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Employee Performance Assessment Using Modified Decision Tree, Hassan Jeiad, Zinah Ameen, Alza Mahmood Aug 2026

Employee Performance Assessment Using Modified Decision Tree, Hassan Jeiad, Zinah Ameen, Alza Mahmood

Engineering and Technology Journal

Decision tree algorithms are famous method in inductive learning and successfully applied for model classification and prediction. Performance evaluation in organization is one of the most important issues that are reliable due to the transition from industrial to knowledge age. This paper proposes the use of modified ID3 (Interactive Dichotomiser 3) decision tree algorithm combining with Taneja entropy instead of the original ID3 algorithm that depends on Shannon entropy which is widely used in the information theory. In fact, the original ID3 was suffer from complexity in the form of complex tree with large number of hops and nodes. The …

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Intelligent Modeling Of Metal Oxide Gas Sensor, Omar Lutfy, Alaa Abdul-Hamead Aug 2026

Intelligent Modeling Of Metal Oxide Gas Sensor, Omar Lutfy, Alaa Abdul-Hamead

Engineering and Technology Journal

Due to the complexity of the gas detection process, traditional modeling techniques cannot provide accurate modeling performance to reproduce the behavior of this difficult process. In this paper, an intelligent modeling technique is utilized to develop an accurate model to represent the complex and nonlinear gas detection process. In particular, in this study nickel Oxide NiO gas sensor, which was specifically fabricated by a simple chemical spray pyrolysis technique. In the process, the nickel chloride hexahydrate salt was used at a concentration of (0.05 M) and a temperature of 350 ºC. Because of this process, the thickness of NiO was …

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Multiple Performance Optimization Of Carburized Steel Using Taguchi Based Moora Approach, Abbas Hussein, Laith Abbas, Asraa Hameed Aug 2026

Multiple Performance Optimization Of Carburized Steel Using Taguchi Based Moora Approach, Abbas Hussein, Laith Abbas, Asraa Hameed

Engineering and Technology Journal

In this research, a multi-response optimization based on Taguchi method-based MOORA (Multi-response optimization based on ratio analysis) is proposed for carburization process of low carbon steel. Experiments were designed using (Taguchi’s) method with six input carburization factors (carburization temperature, carburization time, tempering temperature, tempering time, activator wt.%, and quench media). Depth case and wear rate were considered as the most response measures in this study. Results of the analysis shows that the carburization temperature is the most significant variables for the optimum outcome results. The desired response measures and mathematical model were achieved and used as optimum condition tool. The …

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Effect Of Waiting Time Before Re-Vibration On Mechanical Properties Of Fiber Reinforced Concrete, Aseel Abdulridha Aug 2026

Effect Of Waiting Time Before Re-Vibration On Mechanical Properties Of Fiber Reinforced Concrete, Aseel Abdulridha

Engineering and Technology Journal

A knowledge of the concrete vibration after casting have led to improve the mechanical properties of concrete, reduce the deformations due to creep and shrinkage and reduce the concrete permeability. At the Structural and Material Laboratories- Building and Construction Engineering Department, University of Technology, series experimental tests on prisms, cubes and cylinders were carried out to investigate the effect of waiting time after initial vibration on the flexural-tensile strength, compressive strength and splitting tensile strength of fiber reinforced concrete. The variables considered in this study were; the amount of steel fiber and waiting time after initial vibration. The test results …

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Effect Of Corrosion Time On Critical Buckling Load Of Aisi 304 Columns, Hussain Al-Alkawi, Samih Al-Najjar Aug 2026

Effect Of Corrosion Time On Critical Buckling Load Of Aisi 304 Columns, Hussain Al-Alkawi, Samih Al-Najjar

Engineering and Technology Journal

In this work Corrosion buckling interaction behavior of AISI 304 stainless steel circular columns was investigated. Long and intermediate columns diameter of (6 mm) are tested in as received and corroded condition. Corroded columns are tested after embedded it in soil for different times. Rotating buckling machine test was used to evaluate the critical buckling load (pcr) under dynamic compression loads. By using Perry Robertson formula, experimental work results are compared. The results showed that increasing in corrosion time (embedding time), the reduction in critical buckling load increases also. Maximum reduction of buckling load value are (2.28%, 1.37%) for long …

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Study The Effect Of Nano-Al2o3 And Fiber Glass On Mechanical And Physical Properties Of Pmma Composites For Prosthetic Denture, Qahtan Hamad Aug 2026

Study The Effect Of Nano-Al2o3 And Fiber Glass On Mechanical And Physical Properties Of Pmma Composites For Prosthetic Denture, Qahtan Hamad

Engineering and Technology Journal

In the present research, investigate the effect of adding some reinforcing materials which include nano-aluminum oxide (nano-Al2O3) particles that added with different volume fractions of (1%, 2%, 3% and 4%), and random fiber glass that added with fix volume fractions of (4%), into the PMMA matrix as new cold cure resin, and study some mechanical and physical properties of these hybrid laminated composite as prosthesis denture base material. Specimens’ of this project were prepared by using (Hand Lay-Up) method to form a hybrid laminated composites materials. The mechanical tests were performed on these specimens include (tensile test, impact test, flexural …

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Removal Of Cobalt (Co(Ii)) From Aqueous Solution By Amino Functionalized Sba-15, Anaam Sabri, Talib Albayati, Dalia Abed Aug 2026

Removal Of Cobalt (Co(Ii)) From Aqueous Solution By Amino Functionalized Sba-15, Anaam Sabri, Talib Albayati, Dalia Abed

Engineering and Technology Journal

Mesoporous silica SBA-15 material was synthesized and functionalized by post synthesis method with amino functional group (3-aminopropyltriethoxysilane) to investigate its potential use as an adsorbent for cobalt (Co(II)) removal from aqueous solution. Several characterization methods were used for identifying the material characteristics before and after functionalization, such as X-ray diffraction (XRD), scanning electron microscopy (SEM) and Fourier transform infrared (FTIR) spectroscopy. Batch adsorption experiments were conducted and different variables that affected the removal of cobalt ions were studied, such as pH (1-6), contact time (0-150min), initial concentration (20-120mg/L) and adsorbent dose (0.025-0.3g). It was found that amino functional group was …

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Study Compression And Impact Properties Of Pmma Reinforced By Natural Fibers Used In Denture, Jawad Oleiwi, Sihama I. Salih, Hwazen Fadhil Aug 2026

Study Compression And Impact Properties Of Pmma Reinforced By Natural Fibers Used In Denture, Jawad Oleiwi, Sihama I. Salih, Hwazen Fadhil

Engineering and Technology Journal

The fracture in dentures prepared from acrylic resin occurs frequently during the accidental damage or service through heavy occlusal force [1]. Impact failures usually occur out of the mouth as a result of accidental dropping due to cleaning, coughing or sneezing or a sudden blow to the denture [2]. This paper is focused on the effect of natural fibers on the mechanical properties of PMMA by changing two parameters (content of fibers and length of fibers). Fibers were treated with alkaline solution to improve the interfacial adhesion. Composite specimens were prepared by using hand lay-up method. The results were showed …

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