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

Digital Commons Network™

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

Discipline
Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 66961 - 66990 of 5156587

Full-Text Articles in Entire DC Network

Analyzing Drivers’ Speed Behavior On Various Roads In Baghdad City, Aaisha Jasim, Rasha Al-Rubaee Mar 2026

Analyzing Drivers’ Speed Behavior On Various Roads In Baghdad City, Aaisha Jasim, Rasha Al-Rubaee

Engineering and Technology Journal

This study investigates the driver behavior of a certain number of drivers using a questionnaire method. The questionnaire contains a part of drivers' demographics, including age, gender, and the type of transportation most used by the drivers. It was divided into three parts. Each part deals with a specific type of road in Baghdad City: multi-lane, two-lane, and local. The questions were about the number of times they drove the vehicle on each type of road, the speed at which they drove the vehicle and did not cause accidents, the distance traveled during the last week on each type of …

Go to article

Potential Impact Of Global Warming On Climate And Streamflow Of Adhaim River Basin, Iraq, Fouad Saeed, Mahmoud S. Al-Khafaji, Furat Al-Faraj Mar 2026

Potential Impact Of Global Warming On Climate And Streamflow Of Adhaim River Basin, Iraq, Fouad Saeed, Mahmoud S. Al-Khafaji, Furat Al-Faraj

Engineering and Technology Journal

Global warming induces to increase of greenhouse gases in the atmosphere and plays a crucial role in determining the future trend in climatology and hydrology of a watershed. This paper aims to investigate the implications of global warming on future climate and its consequents on streamflow of the Adhaim River Basin (ARB). For this purpose, the Long Ashton Research Station-Weather Generator (LARS-WG) and Soil and Water Assessment Tool (SWAT)-Based models were implemented. The climate and hydrologic records for the period 1990-2019 were used as a Reference Period (RP) and projected to 2080 under Representative Concentration Pathways (RCPs 2.6, 4.5, and …

Go to article

Accuracy Assessment Of Establishing 3d Real Scale Model In Close-Range Photogrammetry With Digital Camera, Ali Hadi, Abbas Khalaf Mar 2026

Accuracy Assessment Of Establishing 3d Real Scale Model In Close-Range Photogrammetry With Digital Camera, Ali Hadi, Abbas Khalaf

Engineering and Technology Journal

Three-dimensional (3D) real scale models delivered from digital photogrammetric techniques have rapidly increased to meet the requirements of many applications in different fields of daily life. This paper deals with the establishment of a 3D real scale model from a block of images (18 images) that were captured by using Canon EOS 500D digital camera to cover a test field area consisting of 90  artificial target points, 25 of them are ground control points (GCPs) while the remains are checkpoints (CPs). The analytical photogrammetric processes including the calculation of interior orientation parameters (IOPs) of the camera during the camera calibration …

Go to article

Eco-Sustainable Bridging Of Housing Deficit – A Case Study Of Nigeria, Olumide Towoju, Timothy Adeyi, Kayode Ekun, Omogbolade Adepitan Mar 2026

Eco-Sustainable Bridging Of Housing Deficit – A Case Study Of Nigeria, Olumide Towoju, Timothy Adeyi, Kayode Ekun, Omogbolade Adepitan

Engineering and Technology Journal

Keeping the average global temperature rise below the 1.5oC value over the pre-industrial era requires all hands to be on deck. The energy sector, transportation sector, and the agricultural/land use segment are significant contributors to greenhouse gas emissions responsible for global warming. While there is an ongoing campaign for tree planting to reduce atmospheric CO2 volumes, it is imperative to note that the population explosion in some climes is pushing up the demands for land. The housing deficit in Nigeria is more than twenty million units. Building units are required to bridge the deficit; hence, an attendant forest cover loss. …

Go to article

Integrated Approach For Land Surface Temperature Assessment In Different Topography Of Iraq, Zainab Jabal, Thair Khayyun, Imzahim Alwan Mar 2026

Integrated Approach For Land Surface Temperature Assessment In Different Topography Of Iraq, Zainab Jabal, Thair Khayyun, Imzahim Alwan

Engineering and Technology Journal

Land Surface Temperature (LST) is a critical parameter for water resources and hydrology investigation. Weather ground stations provide a continuous dataset on the LST. However, some stations rely on discrete events data, which shows limited capabilities to monitor diurnal and annual changes in LST. Remote Sensing technology provided much valid information by using Moderate Resolution Imaging Spectroradiometer (MODIS) to cover LST variations in Iraq. This study aims to analyze LST variation based on MOD11C3 Data with weather ground measurements stations for the different topography periods between 2000-2020. Different statistical parameters were used to validate LST results, including RSME; NSE; R2, …

Go to article

Effects Of Curing Temperature And Chemical Admixture Type On Fresh Properties And Compressive Strength Of Ultra High-Performance Concrete, Khaldon Aswed, Maan Hassan, Hussein Al-Quraishi Mar 2026

Effects Of Curing Temperature And Chemical Admixture Type On Fresh Properties And Compressive Strength Of Ultra High-Performance Concrete, Khaldon Aswed, Maan Hassan, Hussein Al-Quraishi

Engineering and Technology Journal

The types of post-setting curing and high range water reducing (HRWR) admixture used in Ultra-High-Performance Concrete (UHPC) mixtures play significant roles in determining their rheological and mechanical properties. This study compares the performance of three types of HRWR admixtures commercially available when added to UHPC mixtures under three different curing regimes. Mixtures made with the different superplasticizers were evaluated for their flow, 45mins flow retention, and setting time as fresh mix properties. Compressive strength was also tested for each mixture after 3, 7, and 28 days of curing at the investigated various curing regimes. Sika Viscocrete 180GS produced the highest …

Go to article

Effect Of Glass Wastes On Basic Characteristics Of Controlled Low-Strength Materials, Saif Abdulmunem, Shatha Hasan Mar 2026

Effect Of Glass Wastes On Basic Characteristics Of Controlled Low-Strength Materials, Saif Abdulmunem, Shatha Hasan

Engineering and Technology Journal

The harnessing of glass waste, which is slow to decompose and has high recycling costs, is in the interest of supporting and stimulating a balanced construction pattern that is interdependent on the living environment. Consumable food and drink bottles are one of these forms of waste that can be calibrated to meet desired specifications. Controlled low-strength materials with low and deliberate strength for future excavation have highly desirable rheological properties, active hardening, and zero or rare separation of materials can be maintained with waste glass substitution. In this study, an experimental evaluation was commenced to estimate the practicality of waste …

Go to article

Assessment Of The Effect Of Nono-Clay On Recycled Asphalt Mixtures Resistance To Moisture, Mays Jaafar, Hasan Joni, Hussein Karim Mar 2026

Assessment Of The Effect Of Nono-Clay On Recycled Asphalt Mixtures Resistance To Moisture, Mays Jaafar, Hasan Joni, Hussein Karim

Engineering and Technology Journal

Introducing nanotechnology to the pavement industry witnessed a great interest due to the proven benefits of nanotechnology in various scientific fields. However, the reduction in the binder's characteristics might be disadvantageous to the durability of the recycled mixture, making it more susceptible to external factors such as moisture. Therefore, using nanotechnology is expected here to treat this issue. The goal of the current paper is to report on the influence of the nano-clay montmorillonite (MMT) powder (MMT k10) on the resistance to moisture in the hot recycled mixtures or the Reclaimed Asphalt Pavement mixtures (RAP mixtures). In this work, different …

Go to article

Enhancement Of The Rutting Resistance Of Asphalt Mixtures At Different High Temperatures Using Waste Polyethylene Polymer, Hasan Joni, Ali Al-Rubaie Mar 2026

Enhancement Of The Rutting Resistance Of Asphalt Mixtures At Different High Temperatures Using Waste Polyethylene Polymer, Hasan Joni, Ali Al-Rubaie

Engineering and Technology Journal

The temperature and stress caused by the load can be cited as two main parameters leading to breakage in asphalt pavement, especially rutting (permanent deformation). So, to reduce the problems of rutting of roads, several actions have been taken, including improving pavement quality and the structure design methods. The increase in the attention of respective engineers in the last few years to modify and improve the asphalt performance through providing different types of additives and replacing the raw materials of asphalt mixture with recycled materials to improve the environment and reduce the cost of modified pavement mixture. This study discussed …

Go to article

An Experimental And Theoretical Studies Wings Piles At Different Sandy Soil Densities, Taha Mahdi, Mohammed Al-Neami, Falah Raheel Mar 2026

An Experimental And Theoretical Studies Wings Piles At Different Sandy Soil Densities, Taha Mahdi, Mohammed Al-Neami, Falah Raheel

Engineering and Technology Journal

Increasing the cross-sectional area of the piles or adding wings to the piles are two strategies for increasing the bearing capacity of the piles to resist lateral stresses. Small and full-scale finite element models were used to investigate the effect of adding the wings on the laterally loaded pile bearing capacity in this study. Four embedded ratios (4, 6, 8, and 10) were used with various wing dimensions and numbers. The results showed that adding wings to the pile increases the resistance to lateral loads and reduces the lateral displacement significantly. +To achieve the highest lateral resistance, the wings should …

Go to article

Sustainable High-Performance Concrete Reinforced With Hybrid Steel Waste Fibers, Zainab Jabbar, Wassan Khalil Mar 2026

Sustainable High-Performance Concrete Reinforced With Hybrid Steel Waste Fibers, Zainab Jabbar, Wassan Khalil

Engineering and Technology Journal

This research aims to study the benefit of using fibers made from waste materials in concrete and evaluate the ability to use these fibers as a substitute for commercial fibers. Different aspect ratios of alternative fibers formed from cut steel tied wire waste were utilized. This material is selected because of its low price and wide availability. Two concrete mixes with 15% waste crushed clay brick coarse aggregate reinforced with different volume fractions of 1.0 and 1.5% and an aspect ratio of 40 were prepared. Also, three concrete mixes reinforced with a hybrid aspect ratio of 40 and 65 of …

Go to article

The Permeation And Separation Characteristics Of Polymeric Membranes Incorporated With Nanoparticles For Dye Removal And Interaction Mechanisms Between Polymer And Nanoparticles: A Mini Review, Dalya Al-Araji, Faris Al-Ani, Qusay Alsalhy Mar 2026

The Permeation And Separation Characteristics Of Polymeric Membranes Incorporated With Nanoparticles For Dye Removal And Interaction Mechanisms Between Polymer And Nanoparticles: A Mini Review, Dalya Al-Araji, Faris Al-Ani, Qusay Alsalhy

Engineering and Technology Journal

Dyes are an essential group of organic pollutants with a long history of harming aquatic life and humans. Prior to disposal, polluted dye wastewater must be adequately treated to prevent adverse impacts on persons and the environment. Although there are several techniques for dye removal, most of them share a similar drawback: they generate secondary pollution to the environment. Membrane separation is highlighted in this article because it is one of the most efficient dye removal techniques available nowadays due to its high removal capacity, ease of operation, and clean water generation. Polymeric membranes are frequently used in membrane-based separations …

Go to article

Influence Of Adding Plant Fly Ash On The Geotechnical Properties And Pollution Of Sanitary Landfill Soil, Abdulrahman Salim, Zainab Mohammed, Mohamed Fattah Mar 2026

Influence Of Adding Plant Fly Ash On The Geotechnical Properties And Pollution Of Sanitary Landfill Soil, Abdulrahman Salim, Zainab Mohammed, Mohamed Fattah

Engineering and Technology Journal

This paper investigates the impact of the plant fly ash (dry tree leaves) addition on the geotechnical properties of the landfill soil, where an engineering laboratory landfill simulating a real landfill was manufactured. Two percentages of plant fly ash (10% and 15%) were used to reduce or prevent the penetration of heavy metals resulting from the decomposition of landfill waste into the soil and conducting laboratory tests such as the Atterberg test, specific gravity test, compaction test, permeability test, SEM test, and heavy metals analysis. The results of laboratory tests indicate a decrease in the plastic limit and the liquid …

Go to article

Modifying The Properties Of Open-Graded Friction Course By Adding Cellulose Fiber, Ahmed Muhammed, Zaynab Qasim, Rasha Al-Rubaee Mar 2026

Modifying The Properties Of Open-Graded Friction Course By Adding Cellulose Fiber, Ahmed Muhammed, Zaynab Qasim, Rasha Al-Rubaee

Engineering and Technology Journal

In recent years, Open Graded Friction Course OGFC is becoming more common in some countries. It is applied to improve surface frictional resistance, minimize hydroplaning, reduce water spray, improve night visibility, and lower pavement noise levels. These functions are carried out primarily by removing water from the pavement surface during a period of rain. Also, it has many disadvantages which as poor resistance to permanent deformation, low fatigue strength, high stripping, and moisture susceptibility. The paper aims to investigate the probability of using Cellulose Fiber (CF) as a modifier to improve the properties of OGFC asphalt mixture. In this research, …

Go to article

Measurement Of The Lateral Earth Pressure Coefficient Of Clayey Soils By Modified Oedometer Test, Kumail Alkhafaji, Mohammed Fattah, Makki Al-Recaby Mar 2026

Measurement Of The Lateral Earth Pressure Coefficient Of Clayey Soils By Modified Oedometer Test, Kumail Alkhafaji, Mohammed Fattah, Makki Al-Recaby

Engineering and Technology Journal

The coefficient of lateral earth pressure at rest (K0) explains the connection between the effective vertical and lateral stresses. Geotechnical engineers have studied K0 for many years for its being a key element in the designs and analysis of various geotechnical problems such as slope stability, piles, and earth retaining structures. Moreover, K0 has played a critical phase in any numerical study of the soil-water combined geotechnical boundary value issues requiring parametric stress-strain time formulations During the previous few decades. A modified apparatus consisting of a standard Oedometer equipped with Force Sensitive Resistance (FSR) is used to investigate the value …

Go to article

Effect Of Date Palm Derived Biochar On Soil’S Bulk Density, Ph, And Nitrogen Content, Aola Tahir, Faris Al-Ani, Abdulhameed Al Obaidy Mar 2026

Effect Of Date Palm Derived Biochar On Soil’S Bulk Density, Ph, And Nitrogen Content, Aola Tahir, Faris Al-Ani, Abdulhameed Al Obaidy

Engineering and Technology Journal

The use of biochar as a soil amendment has been the focus of many studies. It is believed to improve soil characteristics and increase crop yields. Still, a diverse range of feedstocks needs to be researched and converted to biochar for environmental purposes.To achieve sustainable biochar, it is favorable to be derived from residues available locally, and particularly interesting are those that have been turned to biochar near the application area. This study investigates the effects of locally date palm-derived biochars produced at four different temperatures (250, 350, 450, and 550oC) for 60 minutes on soil physicochemical properties, mainly; pH, …

Go to article

A Numerical Analysis On Pullout Capacity Of Batter Pile Groups In Sandy Soil, Mais Al-Tememy, Mohammed Al-Neami, Mohammed Asswad Mar 2026

A Numerical Analysis On Pullout Capacity Of Batter Pile Groups In Sandy Soil, Mais Al-Tememy, Mohammed Al-Neami, Mohammed Asswad

Engineering and Technology Journal

Batter piles or raker piles are the piles driven in the soil at an inclination with the vertical to resist inclined forces or large lateral loads. Battered piles are widely utilized to support offshore buildings, towers, and bridges since these structures are risky due to the exposure to overturning moments resulting from winds, waves, and ship impact. This paper used a three-dimensional finite element analysis using PLAXIS 3D software to study the effect of several variables that affect the behavior of batter piles in a group under pullout loads. The study is conducted on a steel pipe pile model embedded …

Go to article

Optimization Of Surface Plasmon Resonance (Spr) For Gold/Air Interface By Using Kretschmann Configuration, Yadgar Shwan, Berun Ghafoor, Govar Hamasalih Mar 2026

Optimization Of Surface Plasmon Resonance (Spr) For Gold/Air Interface By Using Kretschmann Configuration, Yadgar Shwan, Berun Ghafoor, Govar Hamasalih

Engineering and Technology Journal

The coherent oscillation of electrons at contact among a dielectric and metal when the metal is exposed to incoming plasmon is known as “surface Plasmon resonance”. To achieve the best surface plasmon resonance (SPR) signal, several aspects must be considered, including the excitation wavelength, the sort of metals used, and the thickness of the metal layer. The modification of the surface plasmon resonance (SPR) depending on the thickness of metallic gold was investigated in this study. The reflection spectrum is determined as a function of metal thickness and dielectric medium (air), which is fixed in this case, and measuring the …

Go to article

Droplets Generation Using Soluble Polymeric And Surfactant Additives In A Micro-Flow System: An Experimental Approach, Nur Farra Ilyana Binti Yosman, Wafaa Mahmood, Hayder Abdulbari Mar 2026

Droplets Generation Using Soluble Polymeric And Surfactant Additives In A Micro-Flow System: An Experimental Approach, Nur Farra Ilyana Binti Yosman, Wafaa Mahmood, Hayder Abdulbari

Engineering and Technology Journal

In the present work, polymer and surfactant solutions (Xanthan Gum- Cetyltrimethylammonium bromide) were formulated and tested in a micro-flow system (microchannel) carrying octanoic acid as the hydrocarbon phase to determine the droplets formation capabilities of the two different additives. The purpose is to compare the droplet-generated size, shape, and distance between the droplets forming from the individual additives solutions. The jetting phenomenon that happens during droplet generation was also investigated. The solution of the polymer (XG) and surfactant (CTAB) was prepared in 5 different concentrations (50, 100, 150, 200, and 250) ppm and (500, 1000, 1500, 2000, and 2500) ppm, …

Go to article

Effect Of Different Parameters On Raman Scattering Released From Nb2o5 Nanostructures Prepared Via Pld Technique, Evan Salim, Suhair Shafeeq, Mohammed Abdulrazzaq, Mohammed Wahid Mar 2026

Effect Of Different Parameters On Raman Scattering Released From Nb2o5 Nanostructures Prepared Via Pld Technique, Evan Salim, Suhair Shafeeq, Mohammed Abdulrazzaq, Mohammed Wahid

Engineering and Technology Journal

Due to the significance of Nb2O5 as a promising industrial and biomedical material and the importance of Raman analyses to identify nanostructural molecular responsivity for various applications, this study aims to investigate Nb2O5 molecular bands that emerged under the impact of the Raman scattering phenomenon. Besides other advantages, Raman scattering analyses can provide a further investigation of the nanostructural polycrystalline phases supporting the XRD analyses. A pulsed laser was selected as the deposition technique for Nb2O5 thin films prepared with four different parameters. The selection of the pulsed laser deposition (PLD) method was due to the insufficient studies and investigations …

Go to article

The Alternative Representation Of The Bipolar Sugeno Integral, Jabbar Abbas, Hossein Jafari Mar 2026

The Alternative Representation Of The Bipolar Sugeno Integral, Jabbar Abbas, Hossein Jafari

Engineering and Technology Journal

In the context of decision support systems, bi-capacities were introduced as an extension of classical capacities. Many bipolar fuzzy integrals related to the bi-capacities have been presented in recent years. One of these integrals is the Sugeno integral concerning aggregation on bipolar scales. The paper aims to build an equivalent representation of the bipolar Sugeno integral. Therefore, we first employ in this paper the framework based on a ternary-criterion set for proposing an alternative formula of the bipolar Sugeno integral to be suitable for bipolar scales.  Then, we discuss some basic properties and give an illustrative example of this representation. …

Go to article

Study The Effect Of Laser Wavelength On Zno Nanoparticle Characteristics Synthesized By Pulse Laser Ablation As An Antibacterial Application, Hadeel Imran, Kadhim Hubeatir, Kadhim Aadim Mar 2026

Study The Effect Of Laser Wavelength On Zno Nanoparticle Characteristics Synthesized By Pulse Laser Ablation As An Antibacterial Application, Hadeel Imran, Kadhim Hubeatir, Kadhim Aadim

Engineering and Technology Journal

In recent years, biologists, chemists, materials scientists, and engineers have become interested in Nano-sized particles because of their unique properties. In this paper, ZnO nanoparticles were synthesized using an Nd: YAG laser with 800 mJ at 1064 nm and 532 nm (the fundamental and second harmonic wavelengths). The characteristics of optical, morphological, structural, wettability and antibacterial activity have been studied. The used technique of PLAL was successful in nanoparticle formation. It was proved in color changes, which was an indication of ZnO nanoparticle formation. The optical measurements show a decrease in absorption wavelength and an increase in the band gap, …

Go to article

Images Enhancement Based On A New Multi-Dimensional Fractal Created By Rectangular Function, Rabab Farhan Mar 2026

Images Enhancement Based On A New Multi-Dimensional Fractal Created By Rectangular Function, Rabab Farhan

Engineering and Technology Journal

Digital image processing is a field that is included in many journals due to its importance and the fact that it facilitates the achievement of many scientific and engineering applications worldwide. This specialization is linked with other disciplines, whether medical, engineering, sports, and others, as it facilitates the completion of applications quickly and efficiently. Researchers have discovered and garnered notice as a promising analytic tool in image processing using the idea of fractal dimension. In this effort, a new Multi-Dimensional Fractal (MDF) in view of the rectangle function was introduced a. As an application, the MDF to improve and enhance …

Go to article

A Survey On Load Balancing, Routing, And Congestion In Sdn, Amthal Mousa, Mohammed Abdullah Mar 2026

A Survey On Load Balancing, Routing, And Congestion In Sdn, Amthal Mousa, Mohammed Abdullah

Engineering and Technology Journal

High traffic could result in load imbalance or network congestion, which degrades the network’s performance and efficiency. Thus, it is crucial to adopt efficient routing and load balancing models to face these challenging issues. Additionally, when investigating a new approach, it is essential to consider the most important metrics to evaluate this potential approach precisely. This paper presents an intensive analysis of recently available SDN-based load balancing and routing techniques. Furthermore, the features and issues of each technique are stated. Moreover, the most important metrics that should be evaluated are statically analyzed. Also, a brief survey of available network congestion …

Go to article

Preparation And Performance Of Pu/Cpsf Blend Ultrafiltration Membranes For Removal Of Heavy Metal Ion Rejection Studies, Latha S., Shanthana Lakshmid, Maheswari P., Mohan D Mar 2026

Preparation And Performance Of Pu/Cpsf Blend Ultrafiltration Membranes For Removal Of Heavy Metal Ion Rejection Studies, Latha S., Shanthana Lakshmid, Maheswari P., Mohan D

Engineering and Technology Journal

The performance of membranes for a specific application can be determined with the help of structural properties such as molecular weight cut-off (MWCO), morphology, and pore statistics. Heavy metal ions from aqueous streams can be separated with the help of ultrafiltration membranes. In the presence and absence of the various components of the additive poly (ethylene glycol) 600, MWCOs and pore statistics of polyurethane (PU) and carboxylated polysulfone (CPSf) blend ultrafiltration (Total Polymer Concentration = 17.5 wt %) were studied with the help of dextran of different molecular weights ranging from 19 kDa to 150 kDa. The derived pore size, …

Go to article

Produced Water Deoxygenation Via Nitrogen Purging Scheme– Parametric Study – Part 2, Salam Al Dawery, Wameath Abdulmajeed, Saada Al Shukaili, Chandramouli Thotireddy, Ibrahim Al Amri Mar 2026

Produced Water Deoxygenation Via Nitrogen Purging Scheme– Parametric Study – Part 2, Salam Al Dawery, Wameath Abdulmajeed, Saada Al Shukaili, Chandramouli Thotireddy, Ibrahim Al Amri

Engineering and Technology Journal

In this following up paper, we present our findings by examining a pilot scale gasification column and applying nitrogen purging for samples of produced water grafted with different polyacrylamide concentrations (100 – 500 ppm). Upon applying a semi-batch, counter-current scheme for a series of experiments on packed gas-lift column, zero ppm level of dissolved oxygen (DO) was reached within less than 1 minute of nitrogen purging from the start time applied for solutions with viscosity less than 10 mPa.s and using the inline measuring scheme. However, zero ppm DO level was not reachable when purging produced water (PW) samples grafted …

Go to article

Remove Liquid Radioactive Wastes Utilizing Nanofiltration, Ultrafiltration, And Microfiltration Membranes, Alanood Alsarayreh, Taisir Abbas, Saleh Alaswad, Sabad E-Gul, A Bajoga Mar 2026

Remove Liquid Radioactive Wastes Utilizing Nanofiltration, Ultrafiltration, And Microfiltration Membranes, Alanood Alsarayreh, Taisir Abbas, Saleh Alaswad, Sabad E-Gul, A Bajoga

Engineering and Technology Journal

Radioactive waste is generated from fuel cycle processes in nuclear reactors and nuclear power plants (NPPs) in electrical power production, radioisotope manufacturing in nuclear research centers, and medical, industrial, and agricultural applications. Also, natural chain-linked radioisotopes (NORM) are generated from processing and burning fossil fuels and producing oil and natural gas. Therefore, a planned and integrated radioactive waste management strategy must be adopted to protect human health and the environment from the dangers of this waste through published research on a comprehensive radioactive waste management strategy and the testing and dissemination of several treatment options. The main objective is to …

Go to article

Hydrodynamic Properties Investigation Of Ebullated Bed Reactor Using Non-Newtonian Liquid, Zahraa Hassan, Asawer Al Wasiti, Zainb Shnain, Peter Philib Mar 2026

Hydrodynamic Properties Investigation Of Ebullated Bed Reactor Using Non-Newtonian Liquid, Zahraa Hassan, Asawer Al Wasiti, Zainb Shnain, Peter Philib

Engineering and Technology Journal

The importance of using EBR has been renewed recently due to the sharp increase in heavy feedstocks sent to refineries and the hydrocracking process. Most of these feedstocks have a non-Newtonian behavior. The performance of this type of reactor using non-Newtonian liquid is complicated and has not been covered well yet. Hence, the present work is devoted to elucidating the effect of the non-Newtonian behavior of fluid on the hydrodynamic properties of a three-phase (gas-liquid-solid) reactor under operating conditions of different values ​​of gas velocity (2, 4, 6) cm/sec, liquid velocity (0.9, 1.39, 1.8, 2.3) cm/sec, and recycle ratio (1.5, …

Go to article

Bio-Treatment Technologies Of Produced Water: A Review, Rana Azeez, Firas Al-Zuhairi Mar 2026

Bio-Treatment Technologies Of Produced Water: A Review, Rana Azeez, Firas Al-Zuhairi

Engineering and Technology Journal

Petroleum is a vital source of energy for most human activities. The growth of the oil and gas sector is associated with releasing a significant amount of produced water (PW) from onshore and offshore fields. Thus, undesirable toxic pollutants in produced water have become a major concern for those concerned with environmental issues. Therefore, interest in recycling and beneficial reuse of pollutants has increased due to large amounts of PW. In general, various physical and chemical technologies and bio-treatments for PW or combined between them are applied. Bio-treatment is preferred due to its efficiency and eco-friendly compared with other PW …

Go to article

Recent Development In Hydrodynamic And Heat Transfer Characteristics In The Three-Phase Fluidized-Bed System, Omar Mahdy, Amer Abdulrahmn, Jamal Ali Mar 2026

Recent Development In Hydrodynamic And Heat Transfer Characteristics In The Three-Phase Fluidized-Bed System, Omar Mahdy, Amer Abdulrahmn, Jamal Ali

Engineering and Technology Journal

Gas–liquid-solid fluidized beds are broadly utilized in the petrochemical, pharmaceutical, refining, food, biotechnology, and environmental industries. Due to complex phenomena, such as the particle-particle, liquid-particle, particle-bubble interactions, complex hydrodynamics, and heat transfer of three-phase (gas-liquid-solid) fluidized beds, they are incompletely understood. The ability to accurately predict the essential characteristics of the fluidized-bed system, such as hydrodynamics, individual phase mixing, and heat transfer parameters, is necessary for its successful design and operation. This paper investigates the pressure drop, minimum fluidization velocity, phase holdup, heat-transfer coefficient of a fluidized bed reactor, heat transfer studies, CFD simulation, and the effect of these parameters …

Go to article

First Prev Next Last