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 39091 - 39120 of 2916686

Full-Text Articles in Entire DC Network

Comparative Study Of Induction Motor And Steam Turbine At Kebon Agung Sugar Factory Malang Indonesia, Roro Hendaryati, Sudarman Sudarman, Damario Baskoro, Nyoto Susilo, Cucut Pamungkas, Willy Nugroho, Yepy Sofi'i Mar 2026

Comparative Study Of Induction Motor And Steam Turbine At Kebon Agung Sugar Factory Malang Indonesia, Roro Hendaryati, Sudarman Sudarman, Damario Baskoro, Nyoto Susilo, Cucut Pamungkas, Willy Nugroho, Yepy Sofi'i

Engineering and Technology Journal

Induction motors and steam turbines are the main components in the sugar cane milling process. This study analyzes the efficiency of induction motors and steam turbines as mill drives at the Kebon Agung Sugar Factory in Malang, Indonesia. This study used experimental methods by observing and testing at the Kebon Agung Sugar Factory. The induction motors analyzed were mills 1, 2, and 5. Meanwhile, the steam turbines analyzed were cane cutter 1, 2, heavy-duty hammer shredder, mill 3, and mill 4. Motor and turbine data were obtained through the control system. Furthermore, the motor and turbine data are processed, and …

Go to article

Analytical Study Of Free Vibration Characteristics For Sandwich Cylindrical Shell With Single Phase Metal Core, Ahmed Mouthanna, Sadeq Bakhy, Muhannad Al-Waily Mar 2026

Analytical Study Of Free Vibration Characteristics For Sandwich Cylindrical Shell With Single Phase Metal Core, Ahmed Mouthanna, Sadeq Bakhy, Muhannad Al-Waily

Engineering and Technology Journal

This paper presents an analytical investigation of the nonlinear vibration characteristics of a single-phase functionally graded cylindrical shell panel with various porous metal cores. Porous constructions with varying degrees of porosity throughout their volume are known as functionally graded materials (FGMs). These materials have a wide range of applications across several industries, including shipbuilding, automotive, biomedical, marine, and aerospace. The sandwich cylindrical panel has a porous metal core, while the top and bottom faces are composed of homogeneous materials. The model is improved using a power-law function. The governing equations of motion are discretized according to the classical thin shell …

Go to article

Exploring The Effects Of A New Lifter Design And Ball Mill Speed On Grinding Performance And Particle Behaviour: A Comparative Analysis, Ali Safa, Sahraoui Aissat Mar 2026

Exploring The Effects Of A New Lifter Design And Ball Mill Speed On Grinding Performance And Particle Behaviour: A Comparative Analysis, Ali Safa, Sahraoui Aissat

Engineering and Technology Journal

Ball mills are the leading grinding equipment in the mineral processing industry. Balls are the primary component in the grinding of materials. Lifters lift these balls to the shoulder position before cataracts them to the toe position. Almost all classical theories do not consider the lifter's geometry in calculating the energy consumption of ball mills and focus only on the fill level of the charge, the lifter dimensions, their number, and the mill's rotational speed. To improve the ball mill's performance, a new shape of the lifters was proposed in the present research work. Simulation through the EDEM software and …

Go to article

Impact Of Cooling Fluid Temperature On The Structural Integrity Of Gas Turbine Stator Blades, Olumide Towoju Mar 2026

Impact Of Cooling Fluid Temperature On The Structural Integrity Of Gas Turbine Stator Blades, Olumide Towoju

Engineering and Technology Journal

The importance of gas turbine engines to the aviation industry cannot be overemphasized. Being a major part of aircrafts and jets, its reliability must be second to none. They are continuously subjected to extreme conditions during service making them the subject of constant studies. To produce the thrust and torque power required of them, they have to convert the intense heat and pressure inherent in hot combustion gases. To withstand the high combustion gas temperature without thermal failure, specialized materials and cooling are employed. This study numerically investigated the effect of cooling fluid temperature on the structural integrity of a …

Go to article

Performance Evaluation Of Pv Panel Powered Dual Thermoelectric Air Conditioning System, Mustafa Salman, Mahmoud Mahdi, Majida Ahmed Mar 2026

Performance Evaluation Of Pv Panel Powered Dual Thermoelectric Air Conditioning System, Mustafa Salman, Mahmoud Mahdi, Majida Ahmed

Engineering and Technology Journal

Thermoelectric air condition system (TEACs) powered by solar photovoltaics is useful for thermal comfort applications, especially when there is a direct energy source like sunlight. This paper presents experimental investigations of solar-powered thermoelectric air conditioning for both cooling and heating modes. The experiments were carried out in a test room whose volume is 1 m3 under the climatic conditions of the city of Baghdad. In the summer, the thermoelectric device functions as a Peltier cooler. The cold side absorbs the heat from the inside to lower the room's temperature. As for winter, the heat is released from the thermoelectric Peltier …

Go to article

Mathematical Model Of Properties And Experimental Fatigue Investigation At Elevated Temperatures Of Functionally Gradient Materials, Ziadoon M.R Al-Hadrayi, Ahmed Al-Khazraji, Ahmed Shandookh Mar 2026

Mathematical Model Of Properties And Experimental Fatigue Investigation At Elevated Temperatures Of Functionally Gradient Materials, Ziadoon M.R Al-Hadrayi, Ahmed Al-Khazraji, Ahmed Shandookh

Engineering and Technology Journal

Fatigue that occurs at elevated temperatures is called thermal fatigue. High temperatures and cycling loads cause thermal fatigue that can cause component failures. In this paper, induced the mathematical models for functionally gradient materials and three models of functionally gradient materials (FGMs) manufactured by permanent casting were tested to predict their thermal fatigue life. FGMs have been tested to determine the effect of fatigue and temperature interactions. FGMs models were of FGM1, FGM2, and FGM3  respectively, with the following volume fractions and gradations: [100%Al-50%Al50%Zn-50%Zn50%Al-100%Zn], [100%Al-30%Zn70%Al-70%Zn30%Al-100%Zn] and [100%Al-70%Zn30%Al-30%Zn70%Al-100%Zn]. The experimental procedure presented the mechanical properties as modulus of elasticity at two …

Go to article

The Effect Of Electrode Geometry And Pre-Heating Treatment On Resistance Spot Welding Strength, Lana Hassan, Hameed Lafta Mar 2026

The Effect Of Electrode Geometry And Pre-Heating Treatment On Resistance Spot Welding Strength, Lana Hassan, Hameed Lafta

Engineering and Technology Journal

Resistance spot welding (RSW) is one of the most significant and common metal joining methods used in industries. The present paper discusses the comparative performance of resistance spot welding electrodes of nontraditional design with the traditional one of 8 mm contact diameter in welding a 1.5 mm thick low carbon steel sheet used in automobile structural bodies and bridges. The modified electrode tip surface center was machined to have three different holes of 2, 3, and 4 mm depth and three different diameters of 2, 4, and 6 mm producing nine different hollow electrode dimensions. As well as the influence …

Go to article

Effect Of Ecap Process On Mechanical Properties And Microstructure Of Aa-6061 Recycled Chips, Rawa Mohammed, Ayad Shahab, Alireza Rezaei Mar 2026

Effect Of Ecap Process On Mechanical Properties And Microstructure Of Aa-6061 Recycled Chips, Rawa Mohammed, Ayad Shahab, Alireza Rezaei

Engineering and Technology Journal

The oxidation of aluminum machined chips makes successful recycling via the traditional re-melting technique difficult. A viable solution to this problem is to utilize solid-state recycling to transform aluminum machined chips directly into semi-finished goods, eliminating the costs of the re-melting process and minimizing CO2 emissions. In the present study, Al-6061 alloy chips have been recycled using hot extrusion followed by severe plastic deformation at ambient temperature to examine the material's mechanical properties and microstructures. The current study investigates the effects of equal channel angular pressing samples after (1, 2, and 4) cycles using a die with  90° and  20° …

Go to article

Computational Single And Multiphase Approaches To Investigate The Hydrothermal Behavior Of Hybrid Nano-Fluid In Plain And Wavy Tubes, Ahmed S. Habeeb, Sattar Aljabair, Abdulhassan Karamallah Mar 2026

Computational Single And Multiphase Approaches To Investigate The Hydrothermal Behavior Of Hybrid Nano-Fluid In Plain And Wavy Tubes, Ahmed S. Habeeb, Sattar Aljabair, Abdulhassan Karamallah

Engineering and Technology Journal

The newest class of heat transfer improvement is accomplished by using hybrid Nano-fluids. Therefore, the heat transfer and pressure drop of a mixture of Iron oxide (Fe3O4) and Magnesium oxide (MgO) nanoparticles suspended into the base fluid under a turbulent regime through a plain and wavy tube are computed employing commercial software ANSYS Fluent. A mixture of Fe3O4 and MgO nanoparticles in pure water is considered a brand-new type of hybrid Nano-fluid for boosting heat transfer. The simulation procedures were performed utilizing the single and multiphase (mixture) approaches at Reynolds number in the range of (3,916 - 31,331) and volume …

Go to article

Experimental And Numerical Study Of Spur Gears With Lightening Holes, Almurtadha Ahmed, Ali Hassan Mar 2026

Experimental And Numerical Study Of Spur Gears With Lightening Holes, Almurtadha Ahmed, Ali Hassan

Engineering and Technology Journal

The gear is a very important component of power transmission in a flying vehicle and rotating mechanisms etc... In this paper, the dynamic effect and stresses generated as a result of the mash gear will be studied by designing light-weight gears by making lightening holes of multiple diameters (14, 19, 24 and 29) mm at serval speeds (500,1000,1500,2000) that represent the variables parameter with a fixed dimension between the center of the holes and the center of rotation of the gear 43 mm and the number of 5 holes for gears with reduction ratios of gear mass ranging from (3.6%-15%) …

Go to article

Applying Nanocomposite Coatings To Improve Orthopedic Alloys By Using Multiple Flame Spray, Shahad Jabbar, Niveen Abdulkader, Payman Ahmed Mar 2026

Applying Nanocomposite Coatings To Improve Orthopedic Alloys By Using Multiple Flame Spray, Shahad Jabbar, Niveen Abdulkader, Payman Ahmed

Engineering and Technology Journal

Due to their excellent mechanical and biocompatibility characteristics, CoCr-based alloys are frequently employed in orthopaedic implant applications. It is necessary to maximize their general characteristics, corrosion resistance, and ion release. Despite several benefits, coating with torch flame spray has weaker adherence. As a result, powder metallurgy was employed to combine Si and Nb elements with CoCr alloys. CoCrNb and CoCrSi alloys were sprayed with multiple torch flames to apply two different kinds of Nano-coatings (A: 75% HAP+ 25% SiC, and B: 75% Zeolite+ 25% ZrO2). In two samples, alloying elements Nb and Si were added at a concentration of 5 …

Go to article

Oxidation Behavior Of Inconel 625 Alloy Through Aliminide Diffusion Method Using Y2o3 And Zro2 Nanoparticles, Mustafa Jawhar, Muna Abbass, Israa Aziz, Fuad Khoshnaw Mar 2026

Oxidation Behavior Of Inconel 625 Alloy Through Aliminide Diffusion Method Using Y2o3 And Zro2 Nanoparticles, Mustafa Jawhar, Muna Abbass, Israa Aziz, Fuad Khoshnaw

Engineering and Technology Journal

The pack cementation process was used to create a type of Y2O3+ZrO2 doped Cr-Co-modified aluminide coating that takes advantage of the synergistic effects of nano Y2O3 and ZrO2 particles. A Ni-based superalloy (type IN625 type) was coated with pack powder containing: Al as a source of aluminum; Cr as a source of chromium, Co as a source of cobalt, NH4Cl as a source of activator; nano Y2O3-ZrO2 as a source of reactive element oxide; and Al2O3 as a source of filler metal. The process was carried out for 6 hours at 1100oC temperature. The microstructure characterization of the coating was …

Go to article

Deposition Of Gdsmti Coating For Corrosion Control Of Ss 316l In Bio-Field, Shaimaa Naser, Rana Anaee, Hussein Jaber Mar 2026

Deposition Of Gdsmti Coating For Corrosion Control Of Ss 316l In Bio-Field, Shaimaa Naser, Rana Anaee, Hussein Jaber

Engineering and Technology Journal

The corporation of rare earth metals (lanthanides series) with other metals gives good properties in different fields, such as protecting the metallic surface from corrosion risk. In this work, the investigation on adding gadolinium (Gd) and samarium (Sm) as rare metals to bio-inert titanium (Ti) as transition metal was done to protect stainless steel (SS 316L) as bio metallic implant which is used in biofield because of its excellent mechanical properties, low costs, biocompatibility, inertness, and mechanical properties, chemical stability, workability, and high corrosion resistance. The corporation was done through coating using direct current (DC) sputtering technique from the target …

Go to article

Promote Osseointegration Through Surface Functionalization Of Ti-Zr Alloy By Nano Composite Fiber, Amjed Al-Khateeb, Emad Al-Hassani, Akram Jabur, Suriani Binti Abu Bakar Mar 2026

Promote Osseointegration Through Surface Functionalization Of Ti-Zr Alloy By Nano Composite Fiber, Amjed Al-Khateeb, Emad Al-Hassani, Akram Jabur, Suriani Binti Abu Bakar

Engineering and Technology Journal

Using bioactive and biocompatible coatings to biofunctionalized metallic implant surfaces for enhanced bone regeneration while resisting bacterial infection has attracted materials scientists' interest. Bio-metallic Ti-25Zr disc sample was prepared using powder metallurgy and then coated using an electrospinning method to form a nanocomposite fiber as a coating layer over the surface of the metal alloy substrate. Three nano-compounds (Nano-hydroxyapatite, Nano-Titanium dioxide, Nano-strontium titanite) were added individually to the Polycaprolactone/Chitosan blend to prepare the electrospinning solutions. The results show a significant improvement in biocompatibility for the coated samples after seven days of (MC3T3-E1) cell culture. Cell viability percentages were significantly higher …

Go to article

Parametric Study Of Pekk Based Fiber Metal Laminates Used In Aerospace Applications, Nassier Nassir, R. Birch, A. Haldar Mar 2026

Parametric Study Of Pekk Based Fiber Metal Laminates Used In Aerospace Applications, Nassier Nassir, R. Birch, A. Haldar

Engineering and Technology Journal

Numerical analyses offer a cost-effective and efficient alternative to experimental investigations, and Finite Element (FE) models have become a popular tool to simulate the behavior of Fiber metal laminates (FMLs) under impact loads. This study verified the reliability of the proposed FE models to predict the perforation response of ‎the FMLs investigated under low-velocity impact loadings. The validation of ‎the FE models was assessed through comparison with the corresponding results of the ‎experimental work. The results showed that the proposed simulations are capable of predicting the dynamic response of the laminates investigated with a high degree of success. The parametric …

Go to article

Adopting Value Stream Mapping As A Lean Tool To Improve Production Performance, Ayat Kathem, Luma Al-Kindi, Zainab Al-Baldawi Mar 2026

Adopting Value Stream Mapping As A Lean Tool To Improve Production Performance, Ayat Kathem, Luma Al-Kindi, Zainab Al-Baldawi

Engineering and Technology Journal

The main challenge facing industrial companies is how to stay competitive in a fast changing world. They should adopt an effective supply chain that enables them to deliver products in a short period of time. This forced organization to change their pattern of processing and become lean. Lean manufacturing system is the best philosophy to achieve the objectives of the industrial organizations and to reduce the waste activities. The unnecessary movement, defective, waiting, inadequate processing, unnecessary inventory, excessive transport, overproduction, and the underutilization of people and facilities are the most types of waste found in the industries. Many industries have …

Go to article

Effect Of Cordierite Additions On Mechanical Properties Of Hydroxyapatite Used In Medical Applications, Zainab Kadhim, Fatima Al-Hassani, Emad Al-Hassani Mar 2026

Effect Of Cordierite Additions On Mechanical Properties Of Hydroxyapatite Used In Medical Applications, Zainab Kadhim, Fatima Al-Hassani, Emad Al-Hassani

Engineering and Technology Journal

In this study, a novel bioceramic material with improved mechanical properties was prepared to be consentient with the mechanical requirements of living bodies. Cordierite was synthesized via the sintering method at 1400 °C, based on a composition of 51.4% silica, 34.8% of alumina, and 13.8% magnesia. The composition of precursor materials was studied using wet chemical analysis. Three different compositions of the cordierite (30, 40, and 50 wt.%) were incorporated in hydroxyapatite and then sintered at 700, 900, and 1100 °C. To visualize the characteristics of all prepared materials, scanning electron microscopy (SEM) and X-ray diffraction (XRD) were analyzed. The …

Go to article

Overview In Technical Synthesis And Applications Of Zr2ac (A= In, Sn, Pb, Al, S And Se) Max Phases: A Brief Review, Dumooa Hussein, Khalid Abbas, Ahmed Abdulkadhim Al-Ghaban Mar 2026

Overview In Technical Synthesis And Applications Of Zr2ac (A= In, Sn, Pb, Al, S And Se) Max Phases: A Brief Review, Dumooa Hussein, Khalid Abbas, Ahmed Abdulkadhim Al-Ghaban

Engineering and Technology Journal

Zr2AC MAX phases are ternary carbide family with layered structures combining of the outstanding characteristics of metals and ceramics. This review study provides an overview of Zr2AC MAX phase formation mechanisms, applications, and the correlation between Zr2AC MAX phase formation mechanisms and performance in applications such solar coatings, oxidation resistance, high temperature applications, and nuclear applications. Zr2InC MAX phase has low friction and wear materials that can be used for variety applications for significant technology such as electrical spinning connections and rotating bearings. More examples, the Zr2SnC MAX phase uses for self-healing of cracks and oxidation resistance. The Zr2PbC MAX …

Go to article

Smart Robot Vision For A Pick And Place Robotic System, Momena Mohammed, Mohanned Al-Khafaji, Tahseen Abbas Mar 2026

Smart Robot Vision For A Pick And Place Robotic System, Momena Mohammed, Mohanned Al-Khafaji, Tahseen Abbas

Engineering and Technology Journal

The main contribution of this paper is to develop an innovative algorithm to accurately detect and identify the shape and color of objects under various light intensities and find their location to be manipulated by a pick-and-place robotic arm. Workpieces of various shapes and colors are dispersed on the robot's work plane and manipulated according to its specifications. The proposed algorithm utilizes the HSV color model to distinguish between different object colors and shapes. The S channel is used to detect the shapes of objects. After that, a series of filters (Median, Bilateral, and Gaussian) are applied to reduce the …

Go to article

Martensitic Stainless Steel Brazing By Using Ag-Cu- Ti As Active Filler Metal Alloys, Salemah Muhammed, Fadhel Hashim, Ayad Hassan Mar 2026

Martensitic Stainless Steel Brazing By Using Ag-Cu- Ti As Active Filler Metal Alloys, Salemah Muhammed, Fadhel Hashim, Ayad Hassan

Engineering and Technology Journal

Brazing fillers for joining applications are essential to advanced material design and fabrication. Several types of brazing fillers have been developed in recent decades to join similar or different engineering materials. Important parts of automotive and aircraft components, including steel, are often joined by brazing. In this study, Similar samples of martensitic stainless steel were welded by the brazing method, using effective silver-based metal alloys. The brazing welding is done in inert gas atmosphere furnaces, by placing the samples in a special container filled with argon gas during the welding period and at a flow rate (10 to 15 minutes) …

Go to article

Nano-Structured Thin Films For Hydrogen-Permeation Barrier Applied On Aisi 1018 Steel Used In Petroleum Applications, Neam Mohammed, Bahaa Mahdi, Amin Thamir Mar 2026

Nano-Structured Thin Films For Hydrogen-Permeation Barrier Applied On Aisi 1018 Steel Used In Petroleum Applications, Neam Mohammed, Bahaa Mahdi, Amin Thamir

Engineering and Technology Journal

Hydrogen embrittlement is a diffusible Hydrogen that is harmful to the toughness of iron. It follows, therefore, that the harmful influence of diffusible Hydrogen can be mitigated by preventing its entry into steel. This approach was achieved by usingthree coating layersas a coating nanostructure thin layer by DC sputtering on steel structural (AISI l018) and hydrogen charging (HC) effect on uncoated and different Nano coated tensile specimens. The first layer was Titanium as a bonding layer, the second layer was TiO2 with Al2O3, and the third layer was Al2O3. Using a titanium Nano layer coating on AISI1018 steel tensile specimens …

Go to article

Optimization Of Silica Fume And Slag In Roller Compacted Concrete By Taguchi Method, Ziyad Abed, Hisham Ahmed, Wasan Khalil Mar 2026

Optimization Of Silica Fume And Slag In Roller Compacted Concrete By Taguchi Method, Ziyad Abed, Hisham Ahmed, Wasan Khalil

Engineering and Technology Journal

Roller Compacted Concrete Pavement (RCCP) is one type of concrete poured and compacted with the same machines utilized to construct heavy-duty pavements, log sorting, and parking. In this work, a combination of three factors was optimized to produce a sustainable RCCP. These factors were densified silica fume, ground granulated blast-furnace Slag, and mixing water contents. By weight, sulfate-resistant Portland cement was substituted with cementitious materials  such as silica fume and slag in the amounts of (5, 7.5, and 10%) and (25, 27.5, and 30%), respectively. In addition, various percentages (5, 6, and 7%) of water content were utilized. Using the …

Go to article

Fresh Properties Of Self-Consolidating Expired Cement-Fly Ash Cold Bonded Lightweight Aggregate Concrete With Different Mineral Admixtures, Haider Ibrahim, Waleed Abbas Mar 2026

Fresh Properties Of Self-Consolidating Expired Cement-Fly Ash Cold Bonded Lightweight Aggregate Concrete With Different Mineral Admixtures, Haider Ibrahim, Waleed Abbas

Engineering and Technology Journal

The experimental program evaluated the fresh properties of self-consolidating lightweight concretes (SCLC) produced from expired cement EC cold-bonded lightweight coarse aggregates (ALA) with silica fume (SF) and fly ash (FA). Twelve mixtures of SCLC were prepared, the binder in the control mix was just Portland cement (PC), whereas other mixes included binary and ternary of (PC), 20% of (FA), and/or (10%) of (SF) with (0%, 50%, and 100%) as partial replacement of (ALA) with coarse natural aggregates. Fresh features of (SCLC) were evaluated by measuring their slump flow diameter, T500 slump flow time, V-funnel flow time L-box height ratio, and …

Go to article

Impact Of Dam Materials And Hydraulic Properties On Developing The Breaching Dimensions, Mahmood Mohamed, Ibtisam Karim, Mohammed Fattah Mar 2026

Impact Of Dam Materials And Hydraulic Properties On Developing The Breaching Dimensions, Mahmood Mohamed, Ibtisam Karim, Mohammed Fattah

Engineering and Technology Journal

Dam safety is an important issue as it directly influences environmental and life losses. Embankment material and embankment core are important factors that contribute to determining the size and hydraulic characteristics of the breach that occurs due to dam failure. The current topic is to present the analysis of the impact of the dam materials properties and hydraulic characteristics on breach dimensions due to overtopping failure using 2D-HEC-RAS software with the aid of RAS-Mapper. The analysis was made by Digital Elevation Model (DEM) conversed to a Triangular Irregular Network (TIN), then the 2D area of the dam was determined and …

Go to article

Soft Computing Models To Predict The Compaction Characteristics From Physical Soil Properties, Hunar Hama Ali Mar 2026

Soft Computing Models To Predict The Compaction Characteristics From Physical Soil Properties, Hunar Hama Ali

Engineering and Technology Journal

In almost every earthwork, it is essential to compact soil so that the densest possible state of the soil can be achieved. The suitability of soil for earthworks relies on the compaction characteristics; Optimum Moisture Content (OMC), and Maximum Dry Density (MDD). The determination of the compaction characteristics in the laboratory, for a vast volume of soil, is time-consuming. Therefore, for the initial assessment of soil, it is crucial to determine the compaction characteristics from physical soil properties. In this work, three different models of the Artificial Neural Network (ANN), M5P-tree, and Multiple Linear Regression (MLR) are used to predict …

Go to article

Future Water Requirements And Crop Productivity At Al-Najaf Governorate Under Different Climate Change Scenarios (2020–2080), Noor Sabah, Mustafa Al-Mukhtar, Khalid Shemal Mar 2026

Future Water Requirements And Crop Productivity At Al-Najaf Governorate Under Different Climate Change Scenarios (2020–2080), Noor Sabah, Mustafa Al-Mukhtar, Khalid Shemal

Engineering and Technology Journal

This study aims to predict the effect of climate change on net irrigation water requirements (NIWR) and agricultural productivity from five common crops (wheat, barley, summer maize, and sorghum) in the Al-Najaf Governorate in Iraq. GFDL-ESM2M mode was used to predict the lower and upper temp and precipitation for two time periods (2020-2080) with 30 years for two periods (P1 and P2) under representative concentrations paths (RCP 2.5, RCP6, and RCP8.5). The CROPWAT model is used to determine NIWR, and the extreme learning model was used to estimate agricultural yields using previous crop yield production and weather data, supported vectors …

Go to article

Variability Analysis Of The Behaviors Of A Lateritic Soil Profile As A Structural Material, Chidobere Nwa-David, Festus Onyeka Mar 2026

Variability Analysis Of The Behaviors Of A Lateritic Soil Profile As A Structural Material, Chidobere Nwa-David, Festus Onyeka

Engineering and Technology Journal

The desideratum of determining the behavior of the underlying soil on which the foundations will be laid is indisputable. This study evaluates the strength characteristics of lateritic soil material at a new construction site opposite College of Engineering and Engineering Technology (CEET), Michael Okpara University of Agriculture, Umudike (MOUAU). A trail pit was dug taking disturbed soil samples at a depth of 1m, 2m, and 3m for experimental analysis. Laboratory tests on specific gravity, grain size distribution, moisture content, atterberg limits, and triaxial tests were carried out on each sample by the procedure highlighted in BS1377 1990. Inspecting visually, the …

Go to article

Assessment Of The Environmental And Health Risks Of Chromium In The Soil Of Tanning Factories (Baghdad City - Iraq), Rawnaq Mahdi Mar 2026

Assessment Of The Environmental And Health Risks Of Chromium In The Soil Of Tanning Factories (Baghdad City - Iraq), Rawnaq Mahdi

Engineering and Technology Journal

The present study assesses the pollution level and health risk of heavy metal (Cr) in the area surrounding the tanning factories’ soil in Baghdad city-Iraq. Chromium concentration, mean, and median values were calculated. The geoaccumulation index (Igeo), the enrichment factor (EF), and the integrated pollution index (IPI) have been used in the assessment of pollution. The lowest value of (Igeo) at the surface to the north of the factory was (2.36), and the highest value of (Igeo) at a depth of 100 cm from the surface to the south of the factory was (94.94). All values of (EF) were greater …

Go to article

Prediction Of Fresh And Hardened Properties Of Concrete Containing Nanostructured Cassava Peel Ash Using Ibearugbulem's Approach, Chidobere Nwa-David, David Onwuka, Fidelis Njoku, Owus Ibearugbulem Mar 2026

Prediction Of Fresh And Hardened Properties Of Concrete Containing Nanostructured Cassava Peel Ash Using Ibearugbulem's Approach, Chidobere Nwa-David, David Onwuka, Fidelis Njoku, Owus Ibearugbulem

Engineering and Technology Journal

Statistical methods such as Scheffe’s and Osadebe’s models are commonly employed for the optimization of concrete properties. Despite their prediction suitability, attention is drawn to their drawback. Ibearugbulem’s model has been developed to address these shortcomings. In this study, Ibearugbulem’s optimization method was employed to formulate a mathematical model for prediction and strength-optimization of nanostructured cassava peel ash (NCPA)-cement composite. The variation of 28 days compressive strength and initial and final setting time of NCPA-concrete was evaluated. Based on the establishment of a spatial domain for each concrete mixture variable, the response function is expressed as a multivariable function for …

Go to article

Soil-Foundation Interaction And Its Influences On Some Geotechnical Properties Of Sulaimaniyah, Northern Iraq Fine-Grained Soils Utilizing Plaxis 3d, Nihad Salih, Tavga Abdalla, Fadhl Ahmed Mar 2026

Soil-Foundation Interaction And Its Influences On Some Geotechnical Properties Of Sulaimaniyah, Northern Iraq Fine-Grained Soils Utilizing Plaxis 3d, Nihad Salih, Tavga Abdalla, Fadhl Ahmed

Engineering and Technology Journal

Foundations of various construction projects usually can be either shallow or deep foundations. A mat foundation is one of the common shallow foundations typically utilized for various types of buildings. Foundations construct on various types of soils, which might be essential to understand the interaction scenario between them as they are two different types of materials. This study aims to discover the characteristics of the soil-foundation interaction for the suitable areas for the resettlement process in focus on a certain foundation type with a dimension of 10m x 10m x 0.5m, applied on twelve areas rich with fine-grained soil types …

Go to article

First Prev Next Last