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Maximizing The Value Of Decay Rate For A Vibrated Beam, Sherko Ibrahem, Tahseen Othman Aug 2026

Maximizing The Value Of Decay Rate For A Vibrated Beam, Sherko Ibrahem, Tahseen Othman

Engineering and Technology Journal

This paper presents design controllers by using control strategies and (LMI) in order to attenuate the vibrations of a beam. An Aluminum beam with fixed-fixed configuration was chosen as an application example of (AVC) of structure. Six conditions had been taken for (AVC) of the beam. In each condition the beam was the same, the changes was in the actuator and in the disturbance according to the location and the kind of the force applied. The attenuation in vibrations of this beam is in maximizing the decay rate (increasing the damping) and limiting the amplitude of the Beam. In this …

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Full State Feedback ���� And H-Infinity Controllers Design For A Two Wheeled Inverted Pendulum System, Hazem Ali, Zain. Shareef Aug 2026

Full State Feedback ���� And H-Infinity Controllers Design For A Two Wheeled Inverted Pendulum System, Hazem Ali, Zain. Shareef

Engineering and Technology Journal

In this work, two robust controllers, which are full state feedback, ��2 and full state feedback ��∞ controllers are proposed for the two wheeled inverted pendulum system. The nonlinear equations for the two wheeled inverted pendulum system are developed using Euler – Lagrange equation. The system parameters changes are considered to show the effectiveness of the proposed robust controllers. These controllers are proposed not only to stabilize the pendulum in upright position but also to drive the position to track a given reference input. The results show that more desirable robustness and time response specifications can be achieved using the …

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Analysis And Simulation Of Unmanned Aircraft Propeller Motor Using Psim, Ahmed Yousif, Ammar Mohammed Aug 2026

Analysis And Simulation Of Unmanned Aircraft Propeller Motor Using Psim, Ahmed Yousif, Ammar Mohammed

Engineering and Technology Journal

The study and simulation of a PI speed controller for small UAV or quadcopter motor is discussed in this research. The motor under consideration is MAXON 2260 215, which is a brushless DC motor that has permanent magnets on the rotating part and the stationary windings are connected so that the back electromotive force is trapezoidal. The motor utilizes a PI controller, which dominate the duty cycle of the PWM pulses applied on the switches of the inverter so that the motor can run at the required speed. A Chopper is used as a power converter and a proportional–integral as …

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Influence Of Saw Welding Parameters On Microhardness Of Steel A516-Gr60, Sadeq Bakhy, Samir Amin, Fouad Abdullah Aug 2026

Influence Of Saw Welding Parameters On Microhardness Of Steel A516-Gr60, Sadeq Bakhy, Samir Amin, Fouad Abdullah

Engineering and Technology Journal

Submerged Arc Welding (SAW) process is generally used for industries, such as petroleum storage tanks, pressure vessels, and structural components.Good mechanical properties of welded joint lead to crack-free strong joints. In this research, included angle, current, welding travel speed and arc voltage were utilized as welding parameters to weld ASTM A516 Grade 60 (low carbon steel). The experiments were carried out according to a design matrix that established by DOE (Version10) with RSM technique. Microhardness of welded samples was measured by a Digital Microhardness Tester, and then RSM technique was used to model and optimize the microhardness based on the …

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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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Grasping Force Controlling By Slip Detection For Specific Artificial Hand (Ottobock 8e37), Mofaq Twfeq, Ihsan Baqer, Asaad Abdulsahib Aug 2026

Grasping Force Controlling By Slip Detection For Specific Artificial Hand (Ottobock 8e37), Mofaq Twfeq, Ihsan Baqer, Asaad Abdulsahib

Engineering and Technology Journal

This paper presents a theoretical and experimental study to control grasping force of specific artificial hand (Otto Bock 8E37), which it uses by amputees. The hand has two rigid fingers actuated by a DC motor through a multi-gears system. The aim of this work is to give the amputees a feeling of slipping while the hand grasping an object. The mathematical model has been derived to simulate the hand mechanism and analyze the generated signal of contact force between fingertip and the grasped object through a slippage phenomenon. The experimental work consisted of modifying the artificial hand design to aid …

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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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Design Of Speed-Controller For Brushless Dc-Motor Based On Grey Predictor-Pid Controller, Mohammed Ezzaldean Aug 2026

Design Of Speed-Controller For Brushless Dc-Motor Based On Grey Predictor-Pid Controller, Mohammed Ezzaldean

Engineering and Technology Journal

Brushless direct current (BLDC) motor is a permanent-magnet synchronous motor but the commutator and the brushes are replaced by electronic commutation system. This motor is characterized by many advantages compared with other motors and it being used in a wide range of applications. In BLDC motor, speed control plays an essential role; the speed-controller has to respond rapidly to command changes and to offer enough robustness against the variations of the mechanical load. In this paper, the design of Grey-PID controller is proposed as speed controller of BLDC motor where a new adaptation algorithm is suggested to update the parameters …

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Design Of Compact Multiband Microstrip Bpf Based On Fractal Open-Ring Configuration, Hayder Ahmed, Hussain Hammas, Mohammed Hussan Aug 2026

Design Of Compact Multiband Microstrip Bpf Based On Fractal Open-Ring Configuration, Hayder Ahmed, Hussain Hammas, Mohammed Hussan

Engineering and Technology Journal

Multiband bandpass filters (BPFs) are one of the core elements in the multi-services wireless communication systems. For this purpose, this paper presents a design of a compact multiband microstrip BPF design based on fractal open loop configuration. The proposed filter structure is composed of an array of equal side length open-loop resonators; each with different fractal iteration level. More specifically, the modified Minkowski fractal geometry has been adopted to be applied to the conventional open-loop rectangular resonator. The resulting filter configuration has an array of different open-loop structures corresponding to various iteration levels. The simulation of the presented filter is …

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Experimental Design Electromechanical Machine To Produce Electricity By Vertical Dynamic Load, Hosham Anead, Muhannad Khalefa, Esraa Abd Ul–Rzaq Aug 2026

Experimental Design Electromechanical Machine To Produce Electricity By Vertical Dynamic Load, Hosham Anead, Muhannad Khalefa, Esraa Abd Ul–Rzaq

Engineering and Technology Journal

In This Paper is designed electromechanical machine and runningdown the industrial bump untapp..ed so kinetic energy of the vehicle as itpasses on the bump, this mechanism working principle of vertical movement ofthe descent of bump shift about 12 cm certified so the springs and gears group(rack and pinion gear), which kills it for circulation ( Large Sprocket), whichin turn will rotate (Small Sprocket) with a chain and then rotating the Dynamoand will in turn charges the battery. Practical experiments have been anachieved on the mechanism in the road, used vehicle is kind SAIBA success ofmechanism has been proved in bearing …

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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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Multiple Access Chua Chaotic Communication System Using Real Orthogonal Matrix Approach, Ali Radhi Aug 2026

Multiple Access Chua Chaotic Communication System Using Real Orthogonal Matrix Approach, Ali Radhi

Engineering and Technology Journal

An alternative to traditional Pseudo-Noise (PN)-Sequences, one-dimension (1D) orthogonal chaotic map sequences, and three dimensional (3D) continuous chaotic systems (x,y,z) are generated by orthonormal Gram-Schmidt process. A new Orthogonal Chua Chaotic Sequences OCCSs-based Direct-Sequence/Spread-Spectrum-Code Division Multiple Access (DS/SS-CDMA) system is proposed. The proposed system combines the 3D Chua chaotic system with Real Orthogonal Matrix Approach (ROMA). Comparing to previous sequences, the OCCSs inherit all beneficial features of Chua's Circuit and ROMA scheme, such as the best correlation properties, higher capacity, Low Probability Interception (LPI), reliable security and good orthogonality. The three analytical Bit Error Rates (BERs) expressions for each orthogonal …

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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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Sliding Mode Controller Design For Flexible Joint Robot, Ivan Gorial Aug 2026

Sliding Mode Controller Design For Flexible Joint Robot, Ivan Gorial

Engineering and Technology Journal

This paper suggests a flexible joint robot operated by brushed Direct Current (DC) motor model. Due to complex high-order, nonlinear dynamical system which operating under parameter’s uncertainty, sliding mode control (SMC) used to solve this problem of control the flexible joint robot. The SMC method is identified as one of the effective method to design robust control for the flexible joint robot, which based on t using a Low Pass Filter (LPF) with suitable time constant. The mathematical model is presented clearly and the simulations together with their analysis are done using MATLAB software. Simulation results display the efficacy of …

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High Rate Data Processing System Of 6x6 Mimo_Ofdm Using Fpga Technique With Spatial Algorithm, Muthna Fadhil Aug 2026

High Rate Data Processing System Of 6x6 Mimo_Ofdm Using Fpga Technique With Spatial Algorithm, Muthna Fadhil

Engineering and Technology Journal

OFDM has high spectral Performance and pliability in multipath channel effects while MIMO use another strategy for saving power of transmitter by using multi in multi out antennas to make throughput processing in high efficiency. The transceiver MIMO OFDM implemented on an FPGA typeSpartan3 XC3S200 with proper algorithm, Invoke method and QPSK modulation. The project prospective to improve the transceiver operations in terms of data transmission in high speed and saving power for wireless communication system take in consideration the cost of implementation hardware. In the result registered throughput data rate 425 Mbps using spatial algorithm (ICA with SD algorithm) …

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Effect Of Current And Duty Factor For Different Electrode Shapes On Material Removal Rate In Edm, Shukry Aghdeab, Nagham Ghazy Aug 2026

Effect Of Current And Duty Factor For Different Electrode Shapes On Material Removal Rate In Edm, Shukry Aghdeab, Nagham Ghazy

Engineering and Technology Journal

This paper discusses the performance of Electrical Discharge Machining (EDM) process by changing the bottom shape of the electrode, including two stages: designing the electrodes by turning process then the resulted electrodes were used to machine the workpiece by EDM. The effect of electrode shape on material removal rate (MRR) has been investigated for material of CK 60 carbon steel for workpiece and material of brass for electrode. The shapes of the electrode bottom were flat, conical (with 90º apex angle) and round (with 8 mm radius) of constant diameter electrode of 16 mm. Experiments were repeated for three current …

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Suggested Methods To Solve The Coils Misalignment For The Biomedical Implants, Saad Mutashar Aug 2026

Suggested Methods To Solve The Coils Misalignment For The Biomedical Implants, Saad Mutashar

Engineering and Technology Journal

One of the major problems of the inductive coupling link in the biomedical implantable devices is the misalignment between coils. This paper produces two simple suggested methods to avoid and reduce the misalignment between two coils. The first one is to split the implanted coil into two identical coils with 450 μH of inductance where the external coil was equal to them in inductance ~ 900μH.  The results show that the received powers are constant and compensated by one of the coils, which provides a stable power at the implant. The second proposed suggestion is to use two separated identical …

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The Relationship Between Data Transfer Rate And Distance In Power Networks Modems, Salih Mahmood Aug 2026

The Relationship Between Data Transfer Rate And Distance In Power Networks Modems, Salih Mahmood

Engineering and Technology Journal

With the rapid growth of communication networks, reliable and economical communication systems are needed and can be implemented in buildings. PLC uses electrical wiring to transmit information and provides high-speed and cheap data communications, such as home networks and Internet access. PLC is a hostile environment for communication, making communication signals spread difficult and experiencing significant challenges such as noise, attenuation and interference. This research focus on the challenges of communications via power lines such as distance and stability. Performance factors are tested and studied through the actual application of communication networks by connecting modems and computers in the network …

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Developing A Branch And Bound Algorithm For Cell Formation And Group Scheduling, Amjad Abdulghafour, Dhulfiqar Dhayef Aug 2026

Developing A Branch And Bound Algorithm For Cell Formation And Group Scheduling, Amjad Abdulghafour, Dhulfiqar Dhayef

Engineering and Technology Journal

Scheduling models for groups of parts have become more widely used in the industrial companies because of intensification of competition among them to get optimization in the delivery orders, reduce costs and increase quality. “Production scheduling is a meaning of verify a best or close to best achievement time plan for performing job, Production scheduling linked with the group technology applications is called Group Scheduling (GS). The objective of this research is to find optimum sequence of parts through cell formation and group scheduling. In this research, a lower bound for best possible Makespan is calculated by branch and bound …

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Stability Analysis Of An Earth Dam Using Geo-Slope Model Under Different Soil Conditions, Usama Mishal, Thair Khayyun Aug 2026

Stability Analysis Of An Earth Dam Using Geo-Slope Model Under Different Soil Conditions, Usama Mishal, Thair Khayyun

Engineering and Technology Journal

Numerical models are used to check the stability of earth dams and to simulate the effects of all the parameters, which affect its safety. The physical properties of the materials used in the construction of an earth dam are one of these important parameters. The finite element analysis software used for numerical modeling in this study is GeoStudio 2007(SEEP/W and SLOPE/W). The total number of finite elements used to simulate the standard model is 13508 (triangular elements with global size = 2m), while the total number of nodes is 6939. The selected case study is Al-Adhaim dam, which is an …

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Applying Fuzzy Multi-Criteria Decisionmaking And Different Techniques To Solve Multi Objective Project Planning, Mahmoud Mahmoud, Luma Al-Kindi, Haider Hady Aug 2026

Applying Fuzzy Multi-Criteria Decisionmaking And Different Techniques To Solve Multi Objective Project Planning, Mahmoud Mahmoud, Luma Al-Kindi, Haider Hady

Engineering and Technology Journal

For achieving successful projects, effective planning and scheduling should be taken into consideration besides reaching an accepted balance among project objectives. As a result, this research focuses on attaining an effective balancing among a set of objectives that are time, cost, and number of laborers. The purpose of this research is to solve the problem of multi-objective project using multi-technique in a best possible way that accommodate with the nature of project activities. This aim is achieved by facilitating the accuracy of decision taking throughout choosing the best technique among group of techniques used in project planning and control these …

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Dcf With Fbg For Dispersion Compensation In Optical Fiber Link At Various Bit Rates Using Duobinary Modulation Format, Hussein Mahmood Aug 2026

Dcf With Fbg For Dispersion Compensation In Optical Fiber Link At Various Bit Rates Using Duobinary Modulation Format, Hussein Mahmood

Engineering and Technology Journal

Dispersion is one of the very important parameters that effect on the performance of optical fiber communication systems. It causes pulse broadening, limiting of transmission distance and the number of channels on optical fiber link and low Bit rate. Dispersion compensation fiber (DCF) based on Fiber Bragg Grating (FBG) is widespread used in the dispersion compensation scheme. In this work, the proposed dispersion compensation fiber is included (pre – post–symmetrical) schemes with Fiber Bragg Grating and duo-binary modulation format. These are at various bit rates (10 Gbit/s, 20 Gbit/s, 30 Gbit/s and 40 Gbit/s) and different input laser power from …

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Specific Absorption Rate (Sar) Simulated For Square Patch Antenna Of Head Tissues, Ahmed Ahmed Aug 2026

Specific Absorption Rate (Sar) Simulated For Square Patch Antenna Of Head Tissues, Ahmed Ahmed

Engineering and Technology Journal

Square patch antennas (SPA) are widely used today is in wireless communication systems, mainly with a popular frequency of 2.4 GHz. Wireless devices is the main source of electromagnetic (EM) radiation, which penetrates the tissues of human and causes health danger. In this paper, SPA antenna is designed, simulated and evaluated at 2.4 ������ for internet application by using CST Microwave studio 2014. Specific absorption rate (SAR) is the term, which measures the exposure of human to EM radiation of communication antenna. SAR values are calculated over 1 ���� ������ 10 ���� mass of tissues, according to the IEEE and …

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Studying The Efficiency Of Lime-Soda Sinter Process To Extract Alumina From Colored Kaolinite Ores Using Factorial Technique Of Design Of Experiments, Hijran Toama, Abdul-Wahab Al-Ajeel, Ajheen Jumaah Aug 2026

Studying The Efficiency Of Lime-Soda Sinter Process To Extract Alumina From Colored Kaolinite Ores Using Factorial Technique Of Design Of Experiments, Hijran Toama, Abdul-Wahab Al-Ajeel, Ajheen Jumaah

Engineering and Technology Journal

As the increasing demand for alumina in recent years with the result diminishing reserve of bauxite, the need to secure a domestic raw material base is driving research in new technologies to process low grade ores into alumina, with the intention that these technologies will lead to a significant reduction of bauxite and alumina transportation costs, allow the extraction of more valuable components from the ore and reduce environmental impact. Clays are types of the low-grade aluminum ores, they're also well abundant which make them a potential substitutes for Bauxite. In this work, lime soda sinter process was adopted for …

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A Mathematical Model To Determination Of Alum Amount Added For The Purpose Of Coagulation In Water Purification Plants, Hassan Omran, Mizher Kadhim Aug 2026

A Mathematical Model To Determination Of Alum Amount Added For The Purpose Of Coagulation In Water Purification Plants, Hassan Omran, Mizher Kadhim

Engineering and Technology Journal

Chemicals are used to increase the settling velocity for suspended deposition colloids which are not settled in sedimentation tanks in water purification plants . For this purpose, the alum is used in wide spread across the water purification projects in Iraq. This research contains studying the factors that effect on alum amount added by conducting laboratory tests of water samples from Euphrates river at the purification plant in AL-Musayyab city over ten years (with monthly rate). It was noted that the amount added depends heavily on the turbidity of water entering the purification plant, in addition to water temperature and …

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Numerical And Experimental Study Of Cooling In Desktop Computer With Block Heat Sink, Jalal Jalil, Ekbal Ali, Hiba Kurdi Aug 2026

Numerical And Experimental Study Of Cooling In Desktop Computer With Block Heat Sink, Jalal Jalil, Ekbal Ali, Hiba Kurdi

Engineering and Technology Journal

This paper investigates numerically and experimentally fluid flow and heat transfer inside the desktop P.C.. The study of cooling considers the components; CPU, heat sink, power supply, motherboard, CD, HDD and fans. Three components have heat source (CPU, motherboard and power supply unit). There were two openings for air inlet and two for air outlet. The tested values of air inlet velocities were 1.2, 1.8 and 2.4 m/s. The work investigates the effect of inlet air velocity and powers (PCPU = 8.5 W, PPSU = 24 W, PMO=12 W) of multi-components (CPU, motherboard and PSU). The numerical results obtained (by …

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Removal Of Cr (Vi) And Cu (Ii) Ions From Synthetic Wastewater By Solar Photocatalytic Reactor, Mohammad Abid, Luma Mahmood, Noor Hamza, Sukaine Mohamed Mohamed Aug 2026

Removal Of Cr (Vi) And Cu (Ii) Ions From Synthetic Wastewater By Solar Photocatalytic Reactor, Mohammad Abid, Luma Mahmood, Noor Hamza, Sukaine Mohamed Mohamed

Engineering and Technology Journal

Heavy metal ions in wastewater have promoted increasing concern on environmental and health risks. The present work was devoted to investigate the feasibility of utilizing solar light to degrade Cr (VI) and Cu (II) ions in synthetic wastewater. The effect of the key process parameters on the quality of product was studied by varying the pH (3, 5, 7, 9, and 11), H2O2 (50, 100, 200, and 300 mg/L) and TiO2 loading (0.9, 1.3, and 1.7 g/L). Experimental results revealed that after 120 min of solar illumination the highest reduction of Cr (VI) ions was 97.0% obtained under (pH = …

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Earth Fault Protection Failure In The Distribution Transformer 11/0.4 Kv Supply, Thamir Abdul-Wahhab, Mohammed Jasim Aug 2026

Earth Fault Protection Failure In The Distribution Transformer 11/0.4 Kv Supply, Thamir Abdul-Wahhab, Mohammed Jasim

Engineering and Technology Journal

This research studies a miss-coordination problem in the protection of 11 kV distribution network in Iraq. The problem arises when an underground cable is exposed to an earth fault at a location between the High Rupturing Capacity (HRC) fuses and the high voltage windings of the distribution transformer. In this case, the protective relay of the main circuit breaker of the feeder operates at a time faster than the HRC fuses of the faulty transformer. The distribution network considered in this work is an underground 11kV distribution network at Al-Rusafa General Directorate geographical region in Baghdad city. The problem was …

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Design And Implementation Of A Two Stage Controller For Ball And Beam System Using Fpga, Ivan Hashim, Ekhlas Karam, Noor Abdul-Jaleel Aug 2026

Design And Implementation Of A Two Stage Controller For Ball And Beam System Using Fpga, Ivan Hashim, Ekhlas Karam, Noor Abdul-Jaleel

Engineering and Technology Journal

The ball and beam is, in fact, a standout amongst the essentially vital models, which are generally utilized for educating the control system because its simplicity to be built, modeled, and controlled. This system involve a ball roll on a beam and since the angle of the beam manipulate by servo motor, so the purposes of this paper is to design two stages controller to stabilize the ball position along the beam by varying the angle of beam. The First controller stage “is Proportional- Integral- Derivative” (PID) “for servo motor. The second stage of the controller is Proportional-Derivative (PD) to …

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