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2026

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Survey Of User To User Recommendation System In Online Social Networks, Sammer Qader, Ayad Abbas Aug 2026

Survey Of User To User Recommendation System In Online Social Networks, Sammer Qader, Ayad Abbas

Engineering and Technology Journal

The widespread use of online social networks (OSN) and their applications by users lead to the lack of knowledge identification of their needs across the vast amount of data, which made the need to create systems that help people to solve the problems and make decisions with more accuracy, an example of these systems is the Recommendation system (RS), which helps users to make decision and save time in search on a commercial or personal level, one of the most critical types of recommendation systems is the friends recommendation system (FRS) . In this survey, several studies have been suggested …

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Recycling Of Waste Paraffin Wax By The Addition Of Sio2 Nano-Powders To Improve Thermal Conductivity, Aseel Al-Zubaidi Aug 2026

Recycling Of Waste Paraffin Wax By The Addition Of Sio2 Nano-Powders To Improve Thermal Conductivity, Aseel Al-Zubaidi

Engineering and Technology Journal

Paraffin wax is an important material used in thermal energy storage (TES) systems. The thermal conductivity of the material is an important parameter that decides the degree of exploitation of the paraffin wax in TES systems. The thermal conductivity is improved by the addition of silicon oxide nanoparticles (1%, 2%, 4%, and 6%) to the paraffin wax. The average size of the SiO2 particles is equal to 38 nm. The addition of SiO2 nano-particles at very small ratios was found to enhance the thermal conductivity of the paraffin wax considerably. SiO2 nanoparticles, add to paraffin wax, have a significant effect …

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The Reality Of University Education In Iraq: Problems And Solutions Through Adoption Of Credit Hours System, Ameer Morad Aug 2026

The Reality Of University Education In Iraq: Problems And Solutions Through Adoption Of Credit Hours System, Ameer Morad

Engineering and Technology Journal

Accreditation has been adopted in the system of credit hours in all international universities and most of the Arab universities because it is characterized by the consolidation of the principle of education and learning by adapting to the ability of the learner to accept the information while maintaining the level of scientific probity. However, few countries, including Iraq, have not adopted this type of education system. This paper presents a brief overview of the system of credit hours and the diagnosis of some of the problems facing education in Iraq at the present time, which rely on the old education …

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Rules For Managing Methods Of Implementation And Evaluation Of Graduation Projects In Engineering Departments, Fatimah Naser, Maryam Naser Aug 2026

Rules For Managing Methods Of Implementation And Evaluation Of Graduation Projects In Engineering Departments, Fatimah Naser, Maryam Naser

Engineering and Technology Journal

Graduation projects are the final product of what university students have acquired from the sciences and knowledge during their academic period of study during the academic years, which range in most Iraqi universities between 4 to 5 years in engineering colleges. In the last year during which the student to implement the engineering graduation project, which begins by choosing the subject or problem that will be dealt with as a research title and ends with the development of all stages of implementation. And the importance of graduation projects for students of engineering departments to study the bachelor's degree and the …

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Develop And Analyze A Model For Teaching According To The Flipped Class Approach, Ibtisam Hasan, Hatam Karem, Sahar Fafraj Aug 2026

Develop And Analyze A Model For Teaching According To The Flipped Class Approach, Ibtisam Hasan, Hatam Karem, Sahar Fafraj

Engineering and Technology Journal

In this paper, the flipped class strategy has been designed for electromechanical devices lessons. As a first step towards flipping the classroom two lessons are selected from the curriculum common. Delivering lecture content of selected topics before coming to class through notes and other media has been done, while the class time is effectively engaged in high-level thinking. The first step is to try to create the required educational materials to provide content related to topics outside of classroom environment. The second step is to design effective learning strategies for Problem Solving. JIGSAW method has been used for the in …

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Study The Effect Of Apply The Problem Based Learning In Engineering Education, Raed Hwayyin, Azhar Ameed Aug 2026

Study The Effect Of Apply The Problem Based Learning In Engineering Education, Raed Hwayyin, Azhar Ameed

Engineering and Technology Journal

The study examined the effect of application of the problem-based learning method of teaching engineering students in the Department of Petroleum Technology compared to traditional teaching methods (lecture). The problem-based learning method involved a number of assessments and exams that students individually and collectively performed. The study investigates the first class students of petroleum technology department of two subjects which are the calculus and engineering practice subjects. The study is use the statistical calculations to compare between applying the problem based learning and tradition method “lecture method” in engineering education, and taking into consideration the individual differences between students to …

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Assessing The Level Of Reflective Thinking In Engineering Teachers During The Process Of Research Action, Raudhah Ali, Abdulhadi Al-Saady, Najah Al Maimuri Aug 2026

Assessing The Level Of Reflective Thinking In Engineering Teachers During The Process Of Research Action, Raudhah Ali, Abdulhadi Al-Saady, Najah Al Maimuri

Engineering and Technology Journal

A hydrogeologic study has been adopted to conceptualize the concepts of groundwater levels lowering in swamped area of Tyass, middle of Iraq. 2D dimensional groundwater model and, mitigation model have been used to mitigate the aquifer against high salinity and chemical pollutants by the mitigation theory of heterogeneous subsurface media which basically depends upon physical and mathematical derivation, evaluation of chemical pollutants and total dissolved salts (TDS) of subsurface water before and after mitigation process. The water table level was lowered up to 2.43m at the center of a pumping well of abstraction discharge (400m3/day) obtained after 2755days in steady …

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Isolation And Identification Of Ureolytic Bacteria Isolated From Livestock Soil To Improve The Strength Of Cement Mortar, Hussein Khadhim, Saad Ammar, Shahlaa Ebrahim Aug 2026

Isolation And Identification Of Ureolytic Bacteria Isolated From Livestock Soil To Improve The Strength Of Cement Mortar, Hussein Khadhim, Saad Ammar, Shahlaa Ebrahim

Engineering and Technology Journal

The aim of the present study is to isolate and recognize calciumcarbonate-producing bacteria and to check these bacterial strains for use incement mortar to improve its properties such as strength and water absorption.Bacteria were isolated from livestock soils were examined for urease producingactivity, the possibility to precipitate calcite and its activity to improve thecompressive strength. Based on the results, four isolates were selected andidentified. They were characterized as B. atrophaeus, B. subtilis, B. aryabhattaiand B. amyloliquefaciens. Experimental work was performed to evaluate theeffect of bacterial concentration in term of optical density (OD) on thecompressive strength. Bacterial cement mortar samples revealed …

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Hydrogeologic Sustainability And Mitigation Of Shallow Groundwater Against High Saline And Chemical Pollutants, Najah Al Maimuri, Arkan Ali, Abdulhadi Al-Sa’Adi, Mohammed Abed Abed Aug 2026

Hydrogeologic Sustainability And Mitigation Of Shallow Groundwater Against High Saline And Chemical Pollutants, Najah Al Maimuri, Arkan Ali, Abdulhadi Al-Sa’Adi, Mohammed Abed Abed

Engineering and Technology Journal

A hydrogeologic study has been adopted to conceptualize the concepts of groundwater levels lowering in swamped area of Tyass, middle of Iraq. 2D dimensional groundwater model and, mitigation model has been used to mitigate the aquifer against high salinity and chemical pollutants by the mitigation theory of heterogeneous subsurface media, which depends upon physical and mathematical derivation, evaluation of chemical pollutants and total dissolved salts (TDS) of subsurface water before and after mitigation process. The water table level was lowered up to 2.43m at the center of a pumping well of abstraction discharge (400m3/day) obtained after 2755days in steady state. …

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Design Analysis Of A Compensation Technique In Fso Communication System To Mitigate Atmospheric Turbulence Effect, Jenan Kalati, Shehab Kadhim Aug 2026

Design Analysis Of A Compensation Technique In Fso Communication System To Mitigate Atmospheric Turbulence Effect, Jenan Kalati, Shehab Kadhim

Engineering and Technology Journal

Free-space laser communication systems usually experience strong channel fading caused by atmospheric turbulence. To mitigate the impact of atmospheric turbulence on free-space optical links using compensation techniques including adaptive optical (AO) system as advanced technique. Its three main components have remained constant: a wave front sensor to measure distortion, a wave front corrector to compensate for the distortion and a control system to calculate the required correction and necessary shape to apply to the corrector. Optical communication schemes utilizing adaptive optical at the transmitter are proposed. Numerical simulations show that the proposed schemes can significantly reduce the channel fading. The …

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Synthesis And Fabrication Of Zno Nanorods On Silicon For Methanol Gas Sensor, Abdulqader Faisal, Mofeed Jaleel, Fahad Kamal Aug 2026

Synthesis And Fabrication Of Zno Nanorods On Silicon For Methanol Gas Sensor, Abdulqader Faisal, Mofeed Jaleel, Fahad Kamal

Engineering and Technology Journal

Zinc Oxide nanorods (ZnO NRs) were successfully synthesized via hydrothermal method. The growth process was conducted with seed layer concentration of 30 mM. The as-synthesized nanostructures were characterized by x-ray diffraction (XRD), scanning electron microscope (SEM), atomic force microscope (AFM), and ultraviolet-visible (UV-VIS) spectrophotometer. The analysis results revealed a pure Wurtzite ZnO hexagonal nanostructures with preferred orientation (002) along c-direction. The calculated band gap and crystallite size are 3.2 eV and 53.18 nm respectively.  A methanol gas sensor was fabricated based on the annealed ZnO NRs on the silicon substrate. Optimized sensitivity at 250 ppm methanol vapor with fast response …

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Cement Based Solidification/Stabilization Leaching Performances Of Selected Heavy Metal Ions Under Different Ph Extractions, Basim A. Hussain Hussain, Shahlaa Ebrahim, Abbas Sulaymon Aug 2026

Cement Based Solidification/Stabilization Leaching Performances Of Selected Heavy Metal Ions Under Different Ph Extractions, Basim A. Hussain Hussain, Shahlaa Ebrahim, Abbas Sulaymon

Engineering and Technology Journal

Liquid to solid partitioning as a function of pH leaching Procedure LSP EPA method 1313 was carried out to test the effectiveness , performance and efficiency of the cement-based solidification / stabilization (S/S) of heavy metals contaminated sand samples using Ordinary Portland Cement OPC type A . Two cement based mix designs ( 7 and 25 % ) have been applied to (S/S) sand contaminated samples with different heavy metal ions ( Pb , Cu , Cr , and Cd ) having the following concentrations ( 500 , 1500 and 3000 mg / kg ). Fixed water to cement ratio …

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Experimental Study Of 2-Amino-5-(4- Nitrophenyl)-1, 3, 4-Thiadiazole For Ms In Hcl Solution, Talib Abed, Khalida Al-Azawi, Shaimaa Jaber, Ahmed Al-Amiery Al-Amiery, Shaimaa Al-Baghdadi Aug 2026

Experimental Study Of 2-Amino-5-(4- Nitrophenyl)-1, 3, 4-Thiadiazole For Ms In Hcl Solution, Talib Abed, Khalida Al-Azawi, Shaimaa Jaber, Ahmed Al-Amiery Al-Amiery, Shaimaa Al-Baghdadi

Engineering and Technology Journal

The present work aims to study the inhibition performance of new organic inhibitor namely ANTD “2-amino-5-(4-nitrophenyl)-1,3,4- thiadiazole” on corrosion of mild steel (MS) in HCl environment at the concentration of 1.0 M through using weight loss techniques. Weight lost measurements demonstrates the presence of a film on MS surface in existence of organic substance. The inhibition performance of ANTD at various concentrations for mild steel increases with increasing concentration and with an increased in the immersion time and decreased with raising temperatures degrees. The optimal inhibition efficiency of (ANTD), 82%, was achieved for mild steel when immersed with the highest …

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Removal Of Reactive Red Dye (Cibacron Fn-R) From Synthetic Wastewater By Using Natural Substance, Safaa Al-Hussaini, Eman Mohammed, Abdul Hameed Al-Obaidy Aug 2026

Removal Of Reactive Red Dye (Cibacron Fn-R) From Synthetic Wastewater By Using Natural Substance, Safaa Al-Hussaini, Eman Mohammed, Abdul Hameed Al-Obaidy

Engineering and Technology Journal

Synthetic textile wastewater was simulated by using Cibacron reactive red dye FN-R. Pomegranate peels were used as adsorbents to remove the red dye by applying a continuous fixed bed column reactor system having a filter with a diameter of 30mm and a length of 110mm. The effect of different parameters on the removal efficiency was studied; pH levels (2, 4, 6, 8, 10, and 12), flow rate (27, 45, and 60 ml/min), initial dye concentration (10, 15, 20, and 25 mg/l), and the contact time (30, 60, 90, 120, 150, and 180 min). It was found that the optimum pH …

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Investigation Of Corrosion Protection For Steel By Eco-Friendly Coating, Majid Abdulmajeed, Hiba Abdullah, Slafa Ibrahim, Ghaith Alsandooq Alsandooq Aug 2026

Investigation Of Corrosion Protection For Steel By Eco-Friendly Coating, Majid Abdulmajeed, Hiba Abdullah, Slafa Ibrahim, Ghaith Alsandooq Alsandooq

Engineering and Technology Journal

The coupling effect of coating and inhibition has been investigated in the present work. polypyrrole coating with adding coumarin was applied on carbon steel to protect it against corrosion. Electropolymerization process by cyclic voltammeter was carried out in 0.2M oxalic acid electrolyte containing 0.1M pyrrole monomer without and with 0.01M coumarin as an eco-friendly inhibitor. SEM/EDS, AFM and FTIR techniques were used to identify the coating film. Corrosion test using Potentiostat was achieved for uncoated and coated specimens and the results indicated that the corrosion potentials became nobler compared with uncoated specimen, this means that the anodic sites were covered …

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Treatment Of Crude Oil Spills In Water Resources By Using Biological Method, Ibtihaj Abdulrazzak, Mohammed Hafiz, Ali Ibrahim Aug 2026

Treatment Of Crude Oil Spills In Water Resources By Using Biological Method, Ibtihaj Abdulrazzak, Mohammed Hafiz, Ali Ibrahim

Engineering and Technology Journal

Biological treatment has definite to be an effective and excellent method for the removal of aquatic oil spills. It is competent of being used as the best treatment method for cleanup of oil spills. Being a potential technology, significant work needs to be done to improve the capabilities of bioremediation for oil contaminated-aquatic environment. Novel application of combined solvent extraction and two-phase biodegradation processes using Two-Liquid Phase Partitioning Bioreactor (TLPPB) technique was proposed and developed to enhance the cleanup of high concentration of crude oil from aqueous phase using acclimated mixed consortiums in an anaerobic environment. Silicone oil was used …

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Thermodynamic And Kinetic Investigation Of Desalination By Refrigerant Clathrate Hydrate Formation, Shurooq Al-Hemeri, Riyadh Al-Mukhtar, Lina Mahmood Aug 2026

Thermodynamic And Kinetic Investigation Of Desalination By Refrigerant Clathrate Hydrate Formation, Shurooq Al-Hemeri, Riyadh Al-Mukhtar, Lina Mahmood

Engineering and Technology Journal

Gas hydrate is a crystalline solid compound form of water with hydrophobic gas at certain conditions (pressure and temperature). The hydrogen bond in water molecules constructs a framework as a host that entraps gas molecules (gust). Gas hydrate can be applied to many industries such as gas separation, cool storage, food concentration and desalination. Hydrate route looks a promising alternative technology compared to the conventional process, by utilizing a proper gas host, which can be held within water cavities composed by hydrogen-bonded water molecules. In this study the selected host gas was Refrigerant R134a, the work consists of an experimental …

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Shortage Sanitation Services In The Outskirts Of Baghdad And Its Environmental Impacts, Alaa Al-Obaidi, Sara Zangana, Saja Al-Sudany Aug 2026

Shortage Sanitation Services In The Outskirts Of Baghdad And Its Environmental Impacts, Alaa Al-Obaidi, Sara Zangana, Saja Al-Sudany

Engineering and Technology Journal

This study focuses on evaluation of the reality of wastewater services in the areas of outskirts of Baghdad which the responsibility of their implementation rests on the province of Baghdad and the ministry of construction and housing and general municipalities/ the General Directorate of Sewerage GDS, and to suggest the possibility to improve these services in light of the plans developed by the concerned authorities and the proportion of disability in the services suffered by those areas. The study concluded that the completion of the stopped project because of the financial crisis will raise the proportion of serves population to …

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Effect Of Inhibition By Honey On Corrosion Behavior Of Composite Materials From Al-4% Si Alloy Reinforced With Y2o3 Particles, Hanna Al-Kaisy, Mervit Hanoos Aug 2026

Effect Of Inhibition By Honey On Corrosion Behavior Of Composite Materials From Al-4% Si Alloy Reinforced With Y2o3 Particles, Hanna Al-Kaisy, Mervit Hanoos

Engineering and Technology Journal

this work focuses on the preparation specimens of metal matrix composite materials exemplified alloy (Al-4%Si) reinforced by yttria particles Y2O3 with different weight percentage (1,2and 3). Effect of yttria particles on polarization behavior of (Al-4% Si alloy) in sulfuric acid (0.5 M) was studied by using potentiostat in the presence and the absence of natural honey with different concentration (1and 2gm/L) as inhibitor. The results show that the values of tafel slops and corrosion rate (Rmpy) of composite materials reinforcing with particles of yttria with three percentage decreases with increasing the concentration of honey, and the efficiency of inhibition (El%) …

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New Accurate Wattmeter Based On Logarithmic Amplifiers, Azzad Saeed Aug 2026

New Accurate Wattmeter Based On Logarithmic Amplifiers, Azzad Saeed

Engineering and Technology Journal

Analog Computers can realize most of mathematical equations; these equations can be solved using difference, adder, logarithmic, anti-logarithmic, integrator, and differentiator amplifiers. The logarithmic and anti-logarithmic amplifiers are the main components of the analog computers, whereas, they can convert the multiplication and division operations to addition and subtraction ones, and they can convert the exponential functions to multiplication relationships. These amplifiers depend on the non-linearity of the relation between forward current and applied voltage of the diode. All of previous types of wattmeters, measure the consumed power of a specific load or resistor by multiplying the difference voltage of that …

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Hiding 9 Gray Images In Rgb Image And Using Filters For Noise Removing, Haraa Hatem Aug 2026

Hiding 9 Gray Images In Rgb Image And Using Filters For Noise Removing, Haraa Hatem

Engineering and Technology Journal

This paper shows two major techniques, the first is steganography and the second is filters. Gaussian and median filters are used to enhance the quality of image and remove the noise. Two kinds of noise are added to RGB cover image. RGB cover image are divided in to three cover images RGB. The hiding algorithm is Least Significant Bits (LSB) which is used to hide three different images in each part of noisy cover image. The results of proposed system show that the ability of extracting secret message without errors. Normalized Correlation (NC) and Peak Signal to Noise Ratio (PSNR) …

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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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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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Realization Of Direct Linear Relation Between Control Voltage And Resonance Frequency Of The Lc Voltage Controlled Oscillator, Azzad Saeed Aug 2026

Realization Of Direct Linear Relation Between Control Voltage And Resonance Frequency Of The Lc Voltage Controlled Oscillator, Azzad Saeed

Engineering and Technology Journal

The main problem of traditional LC ( L represents the inductance, and C represents the Capacitance) Voltage Controlled Oscillators VCOs, is the non-linearity relation between the tuning control voltage and output resonance frequency, which is caused by two following reasons: the first one is the inverse and non-linear relation between the tuning control voltage and produced capacitance of the used varactor diode in the VCO circuit, and the second is the inverse and non-linear relation between the capacitance value of the used varactor diode and the output resonance frequency. In this paper, a proposed circuit has been designed and implemented …

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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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Effect Of Aging Time On Deformation Behavior Of Lead-Free And Lead Base Solders Alloys, Alaa Ali Aug 2026

Effect Of Aging Time On Deformation Behavior Of Lead-Free And Lead Base Solders Alloys, Alaa Ali

Engineering and Technology Journal

The effect of aging time on the deformation behavior of lead-free and lead- based sub-mm solder alloys were investigated. Experimental results showed that the aging time (less than 4 hours) did not have any effect on the anisotropy behavior of Tin solder balls during compression processes but that is clear in other intervals time specially when the aging time increased, and the microstructure images show different grain growth in high temperature longer time and the Tin anisotropic behavior in lead-free solder alloys

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Analysis Of Production System Effectiveness Elements, Mohanad Sahib, Lamyaa Dawood Aug 2026

Analysis Of Production System Effectiveness Elements, Mohanad Sahib, Lamyaa Dawood

Engineering and Technology Journal

The global competition turbulent manufacturing environment, declining profit margin, customer demand for the high-quality product had a major impact on the manufacturer. The purpose of this research is to investigate the effective elements of the continuous production system at Baghdad Company for Soft Drinks as a case study consecutive for two years. Production system has been investigated by employing Overall Equipment Effectiveness (OEE) and Overall Resources Effectiveness (ORE). As a result, OEE shows low average values of (11%) at 2014 to (9%) in 2015, while ORE values show an average of (8%) in 2014 and (7%) in 2015 respectively.

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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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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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