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 5131 - 5160 of 1823879

Full-Text Articles in Entire DC Network

Response Of Bread Wheat To Abscisic Acid Under Water Stress, Shatha Ahmed, Emad Hashim, Ahmed Al-Taie Aug 2026

Response Of Bread Wheat To Abscisic Acid Under Water Stress, Shatha Ahmed, Emad Hashim, Ahmed Al-Taie

Engineering and Technology Journal

Field experiments were carried out at the Field Crops Research Station of the Agricultural Research Office - Abu Ghraib, during Seasons of 2014-2015 and 2015-2016 to study the effect of four concentrations of abscisic acid (ABA) on some of the physiological characteristics of cultivar bread wheat (Bohooth10) under water stress. The experiments were applied according to randomized complete block design (RCBD) by split plot arrangement with three replicates. Water treatments, which occupied the main plots, included four water irrigation quantities, which were irrigated when depletion 50%, 70% and 40% of available water, in addition to rainy treatment (germination irrigation + …

Go to article

The Effect Of Using Multi Types Of Mineral Admixtures On Some Properties Of Lightweight Self-Compacting Concrete, Waleed Razaq, Qais Freih, Shubbar Al Obaidey Aug 2026

The Effect Of Using Multi Types Of Mineral Admixtures On Some Properties Of Lightweight Self-Compacting Concrete, Waleed Razaq, Qais Freih, Shubbar Al Obaidey

Engineering and Technology Journal

The main objective of this research was studying the effects of using multi types of mineral admixtures as high reactivity Attapulgite (HRA), high reactivity Metakaolin (HRM) and fly ash (FA) on some rheological and mechanical properties of lightweight self - Compacting concrete (LWSCC), when were used as a partially replacement by weight of cement. The results showed that using of (HRA) and (HRM) increased the superplasticizer (SP) dosage, while (FA) with spherical particles reduced the (SP) dosage relative to reference mix (Ref. mix) to get the same slump flow target value. The optimum content for (HRA) used in this study …

Go to article

Comparison Of The Trends Of Mean Temperature And Rainfall Rate In The City Of Samawah (Iraq) With Global Climate Change, Athier Hussin Aug 2026

Comparison Of The Trends Of Mean Temperature And Rainfall Rate In The City Of Samawah (Iraq) With Global Climate Change, Athier Hussin

Engineering and Technology Journal

Increasing earth temperature due to the high level of greenhouse gas has affected the other climate elements on the earth surface. However, there was a little consideration of the differences between the global and local scale of climate change. This research included a comparison between the global climate change and the changes of climate elements that happened in Samawah city. The results showed that there is a significant difference between the increasing annual mean temperature globally and the annual mean temperature in the city. For example, when comparing the increase in annual mean temperature of the city for the period …

Go to article

Study The Catalytic Oxidation Of Phenol In Both Baskets Stirred Tank And Packed Bed Reactors, Ghayda Al-Kindi, Faris Al Ani Aug 2026

Study The Catalytic Oxidation Of Phenol In Both Baskets Stirred Tank And Packed Bed Reactors, Ghayda Al-Kindi, Faris Al Ani

Engineering and Technology Journal

The aim of this study, using five types of AL-Fe pillared Iraqi clay to study catalyst wet air oxidation to oxide phenol from synthesis’s wastewater and study the limitation criteria in control of operating conditions. Two types of reactor (Batch and packed bed) used to study operation conditions and the best conditions result from Batch reactor was pressure 3.2Mpa, temperature 130⁰C, phenol concentration 500mg/l and pH 3.9, for packed bed reactor with AL-Fe pillared clays of Anbar-Erbil, Mosul, due to high phenol removal, in up-flow mode. The results show that phenol removal is 98-97.8-95% for Erbil-MosulAnbar respectively, when the LHSV …

Go to article

Effect Of Operating Parameters On Degradation Of Eriochrome Black T Dye, Walaa Sabre, Sheymaa Mohammed, Ahmed Ali Aug 2026

Effect Of Operating Parameters On Degradation Of Eriochrome Black T Dye, Walaa Sabre, Sheymaa Mohammed, Ahmed Ali

Engineering and Technology Journal

Of the effect, the process parameters on photocatalytic degradation Eriochrome black T( EBT) dye has been degraded in a batch reactor under UV light in heterogeneous slurry utilizing various concentrations of two semiconductors commercial catalysts (Titanium dioxide and Zinc Oxide). The parameter has been studied (catalyst type, catalyst concentration, pH of dye solution and initial dye concentration). The results showed that the best dose of TiO2 and ZnO are 1.5 and 1 g/l respectively and the optimum pH (6 and 11) using TiO2 and ZnO respectively. Moreover, the comparative assessment of the photocatalytic efficiency was made for different photocatalytic powder. …

Go to article

Adsorption Study Of Nitrate Anions By Different Materials Using Fixed Bed Column, Anaam Sabri, Noor Abbood Aug 2026

Adsorption Study Of Nitrate Anions By Different Materials Using Fixed Bed Column, Anaam Sabri, Noor Abbood

Engineering and Technology Journal

MCM-41is, a mesoporous material with a hexagonal structure, has a high surface area, high pore vol., and low mass density. Continuous adsorption fixed bed of NH2-MCM-4I adsorbent was utilized for the removal of nitrate anions from aqueous solutions. The effect of adsorbent weight (0.5, 1, 2 gm), flow rate (0.5, 1.0, 1.5 ml/min) and initial NO3 - concentrations (50, 75, 100 mg/l) on breakthrough curves were studied. It was found that breakthrough time increases with increasing column bed height and decreases with increasing NO3 - inlet concentration and flow rate. The highest removal percentage (75.2%) achieved at inlet concentration of …

Go to article

Effect Of Compost And Humic Acid On Potato Growth And Quality, Abbas Mijwel, Adel N. Abed Al-Redha Abed Al-Redha, Tarif Bresim Aug 2026

Effect Of Compost And Humic Acid On Potato Growth And Quality, Abbas Mijwel, Adel N. Abed Al-Redha Abed Al-Redha, Tarif Bresim

Engineering and Technology Journal

an experiment was carried out in Karbala on 10/9/2014 using the compost of palm residues at four levels (0, 20, 30, 40) tan.h-1 and the humic acid in three concentrations (0,1.5, 3)ml.L-1 to determine the effect of these factors and their interaction in growth and quality characteristics of potato and find organic fertilizer combination instead of chemical fertilizers. The addition of the compost of the residue palm has a significant and positive effect on all studied traits (Number of branches.plant-1, Plant height, percent of the dry weight of vegetative growth, percent of nitrogen, phosphorus and potassium in tubers, ratio of …

Go to article

Slurry Infiltrated Fiber Concrete As Sustainable Solution For Defected Buildings, Mays Alrubaie, Dalya Hameed, Shakir Salih, Galib Habeeb Habeeb, Waleed Abbas Aug 2026

Slurry Infiltrated Fiber Concrete As Sustainable Solution For Defected Buildings, Mays Alrubaie, Dalya Hameed, Shakir Salih, Galib Habeeb Habeeb, Waleed Abbas

Engineering and Technology Journal

One of the new concrete technology applications that had to get increased importance as repairing and retrofitting technique is slurry infiltrated fiber concrete (SIFCON). This research aims to investigate some of the mechanical properties of SIFCON and its role in improving the useful life of normal concrete. The research consists of two parts; in the first part, three mixes are prepared with 0%, 1.5%, and 6% volume fraction steel fiber content. Compressive strength, flexural strength, total absorption and apparent density tests are made for each mix. In the second part, a composite section of normal concrete and SIFCON mix with …

Go to article

Evaluation Of Water Treatment Residue As A Sorption Medium And Its Application To Control Phosphate Level In Water, Mahmood Barbooti, Shaymaa Hasan, Mustafa Jassim Aug 2026

Evaluation Of Water Treatment Residue As A Sorption Medium And Its Application To Control Phosphate Level In Water, Mahmood Barbooti, Shaymaa Hasan, Mustafa Jassim

Engineering and Technology Journal

Wastewater treatment residual material, WTR, from a local drinking water facility in Baghdad, was evaluated as a potential medium for the removal of some unwanted species from water. The material was first characterized by chemical composition, X-ray diffraction and infrared spectral analysis prior to its use as an adsorbent. The x-ray revealed that the material is a calcium based water treatment residue mixed with silica and impurities of oxides like MgO and Fe2O3. The adsorption characteristics of the material were evaluated by studying the adsorption of methylene blue. The cation exchange capacity and the surface area had values of 10.5 …

Go to article

The Influence Of Recycled Crushing Strength Of Rc Beams Under Repeated Loading, Mohammed Al Hamdani, Marawan Hamid, Nada Al Hussiny Aug 2026

The Influence Of Recycled Crushing Strength Of Rc Beams Under Repeated Loading, Mohammed Al Hamdani, Marawan Hamid, Nada Al Hussiny

Engineering and Technology Journal

This paper describes a study of the effect of crashed (recycle) concrete on reinforced concrete beams. Three-dimensionally nonlinear finite elements analysis has been used conducted the numerical investigations of the general study of recycling-beam. ANSYS.11.0 computer-program using in this paper. Solid65 using as element of concrete, link8 for steel. The compression strength of the concrete mix decrease due to the strength of crashing concert. It’s weaker than gravel aggregate, that lower strength due to weak of old mortar cement around the aggregate and due to crashed process. The percentage of decrease of the compressive strength equal to (59.8) % and …

Go to article

Application Of Microwave Heating In The Demulsification Of Crude Oil Emulsions, Firdos Abdulla, Mohammed Ali, Jenan Al-Najar, Nedhal Shaker Shaker Aug 2026

Application Of Microwave Heating In The Demulsification Of Crude Oil Emulsions, Firdos Abdulla, Mohammed Ali, Jenan Al-Najar, Nedhal Shaker Shaker

Engineering and Technology Journal

In recent times the formation of pre-processing water-in-crude emulsions in petroleum industries has led to some inherent challenges such as the reduction in the efficiency of oil recovery, high cost of operation and corrosion in pipes. Traditional ways of pulverizing the emulsions using heat and chemical approaches have many disadvantageous from both economic and environmental points of view. Microwave irradiation is an efficient method for the demulsification of the water-in-oil (W/O) emulsion, encountered in refinery industries. The microwave technology is a costeffective way of emulsifying water-in-crude-oil emulsion. Two methods were used for conducting the demulsification performance test, i.e. chemical and …

Go to article

Simulation Of Mosul Dam Reservoir Operation For Irrigation And Hydropower Generation, Baraa Jebbo, Taymoor Awchi Aug 2026

Simulation Of Mosul Dam Reservoir Operation For Irrigation And Hydropower Generation, Baraa Jebbo, Taymoor Awchi

Engineering and Technology Journal

The current research aims to build a simulation model to study the effect of Jazeera irrigation projects (North, East and South) water requirements on hydroelectric power generation from Mosul dam hydropower plant. The simulation was applied from January 1988 to December 2006 on a monthly basis. A simulation model was built utilizing (HEC-ResSim 3.0) Package, which showed high efficiency in representing and simulating the actual operation of the reservoir. Simulation model operation has been carried out through five scenarios with two cases of priority; the first was to maximize the hydroelectric power generation, and the second was to minimize the …

Go to article

Restoring The Local Heritage And Its Role In Sustainable Spatial Development The Great Market In Al-Najaf – A Case Study, Wahda Al-Hinkawi, Baneen Al-Saadawi Aug 2026

Restoring The Local Heritage And Its Role In Sustainable Spatial Development The Great Market In Al-Najaf – A Case Study, Wahda Al-Hinkawi, Baneen Al-Saadawi

Engineering and Technology Journal

Regional and local changes in Iraq have led to an accelerated dynamic of comprehensive development without the preservation of local heritage, which caused the loss of many traditional buildings, changing their urban fabric, the emergence of contradictory architectural styles, and others without a clear and specific identity, causing visual deformation. The research problem was identified from the goals and principles of urban design that concerned with the conservation, restoration, and continuity of heritage context, activates their role in sustainable development programs and as a response to changes and radical shifts in spatial structures of city centers, and the social and …

Go to article

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 …

Go to article

Criteria For Sustainable Planting Design Applications In Landscape Architecture Projects Under Arid Conditions, Abdullah Ghazal Aug 2026

Criteria For Sustainable Planting Design Applications In Landscape Architecture Projects Under Arid Conditions, Abdullah Ghazal

Engineering and Technology Journal

Planting design is an important part of all Landscape Architecture projects (LAps). It needs new criteria in order to make it more sustainable. When arid conditions are dominant, these criteria will be more difficult. These limiting factors of harsh environment and aridity, such as high temperature and evaporation, low rainfall, poor and sandy soil, are largely diverse in many levels concerning water, soil, and climate. Thus they clearly appear in designing and impeding sustainable LAps. The planting design in LAps is governed by three major factors which are: plant species, water availability, and the control soil property and climate conditions. …

Go to article

Preparation And Study The Structure Of Pure And Impure Barium Titanate With Zr4+ Ion, Mojahid Najim, Wasan Hekmat Aug 2026

Preparation And Study The Structure Of Pure And Impure Barium Titanate With Zr4+ Ion, Mojahid Najim, Wasan Hekmat

Engineering and Technology Journal

In this research, pure and impure barium titanate with Zr4+ ion with two molar ratios x= (5, 10) % have been synthesized by solid-state reaction technique. The powders calculations at two temperatures (950°C and 1400°C). An XRD technique was used in order to study the crystal structure of pure and impure barium titanate, which confirmed the formation of the tetragonal phase of BaTiO3, then calculate the lattice parameters of pure and impure barium titanate, the addition of zirconium ion Zr4+ lead to increases lattice parameters.

Go to article

Synthesis, Characterization And Antibacterial Activities Of Uracil And Uracil–Oxalate Complexes With Cr(Iii) And Fe(Iii), Shatha Obaid Aug 2026

Synthesis, Characterization And Antibacterial Activities Of Uracil And Uracil–Oxalate Complexes With Cr(Iii) And Fe(Iii), Shatha Obaid

Engineering and Technology Journal

New complexes of the some trivalent transition metal ions of the uracil such as [M(Ura)3Cl3] and mixed ligand metal complexes with uracil and oxalic acid [M(Ura)2(OA)(OH2)Cl].H2O type, where (Ura)=Uracil, (OA= Oxalic acid dihydrate, (M= Cr+3 and Fe+3) were synthesized and characterized by the elemental analysis, FT.IR, electronic spectra, mass spectra and magnetic susceptibility as well as the conductivity measurements. Six–coordinated metal complexes were suggested for the isolated complexes of Cr+3 and Fe+3 with molecular formulas dependent on the nature of uracil and oxalic acid present. The proposed molecular structure for all complexes with their ions is octahedral geometries. The antibacterial …

Go to article

Production Of Lightweight Concrete By Using Construction Lightweight Wastes, Huda Abed Aug 2026

Production Of Lightweight Concrete By Using Construction Lightweight Wastes, Huda Abed

Engineering and Technology Journal

This research covers the use of cellular lightweight concrete waste as recycled coarse aggregates to produce lightweight concrete. Various volume fractions of coarse aggregate (35%, 50%, and 75%) were used. The specimens were tested for compressive strength and density at age of 28-days. The compressive strengths for the resulting lightweight concrete with a density of (2131, 1826 and 1630) kg/m3 were (24, 22.6 and 11.5) MPa, respectively. In addition, silica fume was utilized as a constant replacement ratio 6% of cement weight for mixes lightweight aggregate to enhance the compressive strength of such concrete.

Go to article

Some Mechanical Properties Of Polymer Matrix Composites Reinforced By Nano Silica Particles And Glass Fibers, Sudad Younis, Jawad Oleiwi, Reem Mohammed Aug 2026

Some Mechanical Properties Of Polymer Matrix Composites Reinforced By Nano Silica Particles And Glass Fibers, Sudad Younis, Jawad Oleiwi, Reem Mohammed

Engineering and Technology Journal

This research studied the effect of nano silica particles on wear behavior test , ultimate tensile strength ,impact strength, fracture toughness and hardness shore D of specimens composite material. The hand-lay-up method is used to preparation of specimens established from unsaturated polyester resin matrix reinforcement with 4% weight fraction glass fiber (chopped / woven) mat and 1%, 3%, 5% weight fraction of nano silica particle. The nano silica particles used in this study has an average size of (less than 45nm). The results showed that the specimen (up+4% woven glass fiber+5% nano SiO2) gives better mechanical properties include ultimate tensile …

Go to article

Resistance Of High-Volume Fly Ash Self-Compacting Concrete To Internal Sulfate Attack, Tareq Al-Attar, Ahmed Taha Aug 2026

Resistance Of High-Volume Fly Ash Self-Compacting Concrete To Internal Sulfate Attack, Tareq Al-Attar, Ahmed Taha

Engineering and Technology Journal

This paper investigates the durability of high-volume Fly ash self-compacting concrete, HVFASCC that exposed to internal sulfate attack. At the present work, HVFASCC was produced with two Fly ash replacements: 50 and 60% by weight of Portland cement. The internal sulfate attack was simulated by adding natural gypsum (CaSO4) that contain ion (SO3-2) to fine aggregate by two weight percentages: 1 and 2%. Limestone dust was used as filler with a content of 100 kg/m3. The cementitious materials, cement and Fly ash, content was 400 kg/m3 and the water to powder ratio for the studied mixes was 0.34 by weight. …

Go to article

Robust Multiple Model Adaptive Control For Dynamic Positioning Of Quadrotor Helicopter System, Safanah Raafat, Zainab Mahmoud Aug 2026

Robust Multiple Model Adaptive Control For Dynamic Positioning Of Quadrotor Helicopter System, Safanah Raafat, Zainab Mahmoud

Engineering and Technology Journal

The quadrotor control has been one of the benchmark control problems. It is considered as an under-actuated, multivariable and high nonlinear system due to its dynamics, having strong coupling between translation and angular motion and affected by external disturbances associated with flight environment. Therefore, there is a need to design a robust control that can keep up with sudden changes and find better tracking performance against modeling error and uncertainties. In this work, an adaptive state feedback control method denoted as Classical Multiple Model Adaptive Control (CMMAC) has been implemented. This method embodies in its structure a bank of filters. …

Go to article

Study Of The Mechanical Properties Of Jute Fiber Reinforced Cement Composites, Lamees Faiq Aug 2026

Study Of The Mechanical Properties Of Jute Fiber Reinforced Cement Composites, Lamees Faiq

Engineering and Technology Journal

The study results show the use of jute fibers to develop a low cost material for wall panels, roofs and other construction board. The study has been investigates the cement mechanical characteristics jute fibers reinforced concrete. Different lengths of fibers (2cm) and (4cm) were mixed to act as reinforcement for the concrete samples. The samples with different fiber percentages (0.5%, 1% and 1.5% by weight of cement) were tested in axial compression and splitting tensile strength. A total of (42) concrete cube samples (100mm*100mm*100mm) and (42) cylindrical samples (100mm*200mm) were used in the tests, these include compressive and splitting tensile …

Go to article

Mechanical Properties Modeling And Optimization For Polymeric Matrix Hybrid Bio Composite For Scaffolds Application, Jenan Kashan, Marwan Arbilei Aug 2026

Mechanical Properties Modeling And Optimization For Polymeric Matrix Hybrid Bio Composite For Scaffolds Application, Jenan Kashan, Marwan Arbilei

Engineering and Technology Journal

TiO2 / Polypropylene composite considers very promising biomaterials in bone replacement and repair application, but mechanical properties still out of load bearing scaffolds application. In this work, two approaches were suggested to produce enhanced polymeric matrix bio composite for scaffolds application, 1st one was by using Nano TiO2 particles to produce bio composite with good mechanical properties. while the 2nd approach applied by the addition of Al2O3 Nano particles. Different processing conditions have been used like different compounding pressures, compounding temperatures, and chemical composition. This work aimed to investigate the effect of these additions and processing factors on mechanical and …

Go to article

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%) …

Go to article

The Effect Of Addition Of Ceo2 Nanoparticles On The Microstructure And Mechanical Properties Of Ti-Al-Mg Compact Samples, Mahdi Hanoon, Akeel Al-Attar, Ali Resen Aug 2026

The Effect Of Addition Of Ceo2 Nanoparticles On The Microstructure And Mechanical Properties Of Ti-Al-Mg Compact Samples, Mahdi Hanoon, Akeel Al-Attar, Ali Resen

Engineering and Technology Journal

In this research, Ti-15Al-5Mg alloy with different amount of CeO2 nanoparticles was prepared by powder metallurgy method, the powders of these materials were mixed together by ball mill then the mixed powders were pressed under high pressure, the compacted samples were sintered in electron furnace under argon gas. The density and porosity measured using Archimedes method, XRD and SEM images were used to detect phase's peaks and microstructure of all alloy sets. Vickers micro-hardness measured and Brazilian compressive tests, the results of these tests were drawing in charts with porosity and CeO2 nanoparticles percentage. From these results the best amount …

Go to article

Corrosion Activity Laser Treated Aluminum-12% Silicon Alloy With Fe And Ti Powders At Two Different Energies, Mervit Hanoos Aug 2026

Corrosion Activity Laser Treated Aluminum-12% Silicon Alloy With Fe And Ti Powders At Two Different Energies, Mervit Hanoos

Engineering and Technology Journal

In This work, the corrosion activity of laser treated almium-12%silicon alloy was tested. The addition of Fe and Ti as elemental powders was studied. Two different laser energies of 750 and 1000 kJ were used. Corrosion measurements by potential static at 3mV.sec-1in condensed synthetic automotive solution. The corrosion data show that laser treatment led to increasing corrosion resistance due to smoothness of the surface alloy because of high energy, and the corrosion resistance in the presence of Fe and Ti powders better than that in the absence of metallic powders were increased from (8.416 Ω.cm2( to )11.216 Ω.cm2( whereas corrosion …

Go to article

Physical Properties Study On Ti-C/Nano-Ceramics Composite, Ahmed Al-Ghaban, Niveen Abdulkader, Hadeel Al Baiaty Aug 2026

Physical Properties Study On Ti-C/Nano-Ceramics Composite, Ahmed Al-Ghaban, Niveen Abdulkader, Hadeel Al Baiaty

Engineering and Technology Journal

The effect of introducing Al2O3 and CuO nano particles on the physical properties of sintered Ti-C based materials has been studied. Titanium and carbon elemental powders have been mixed with nanoparticles of Al2O3 and CuO to produce composites of Ti-C/ceramics at 1100 °C. The XRD results show that for different amount of mixed nanoparticles, TiC, TiO2, and some rest of the reacted powders are the most dominant stable phases. In terms of physical properties, the results show that the raised Al2O3 percentage leads to gradually increase in apparent density of the sintered mixture as compared with the purely prepared TiC. …

Go to article

Effect Of V-Shape Twisted Jaw Turbulators On Thermal Performance Of Tube Heat Exchanger: An Experimental Study, Akram Abed, Nassr Hussein, Abdulmunem Abdulmunem Aug 2026

Effect Of V-Shape Twisted Jaw Turbulators On Thermal Performance Of Tube Heat Exchanger: An Experimental Study, Akram Abed, Nassr Hussein, Abdulmunem Abdulmunem

Engineering and Technology Journal

The main purpose of the present investigation is enhancing heat transfer rate in a tube heat exchanger by using V-shape twisted Jaws. The air is used as a working fluid and pumped through the test section with different values of Reynolds number (6000 - 19500), while the heat flux has been selected as a constant boundary condition around the tube section. In this study, two type of twisted jaw turbulators are used with two twisted ratio (TR= 2 & 4) as well as, the effect of using different numbers of turbulators (N= 6, 8 and 10) inside test section with …

Go to article

Geomatics Techniques To Evaluate Bus Service Coverage A Case Study On Nasiriyah, Iraq, Murtadha Satchet Aug 2026

Geomatics Techniques To Evaluate Bus Service Coverage A Case Study On Nasiriyah, Iraq, Murtadha Satchet

Engineering and Technology Journal

In this paper, geomatics techniques were used to collect, build, and analyze a geo-database of the bus transport network. Spatial identification of bus routes and bus stops using GPS was performed using GIS to link and analyze the necessary metadata with the available spatial data. The criteria used to assess bus service coverage were as follows: the spatial coverage in terms of the walking distance to the transport service, the adequacy of the transport network length, and extent of supply availability of the bus transport system. The results revealed that the population “living in 47% of the city’s urban area” …

Go to article

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

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

Engineering and Technology Journal

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

Go to article

First Prev Next Last