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 4921 - 4950 of 5155073

Full-Text Articles in Entire DC Network

Segmentation Approach For A Noisy Iris Images Based On Hybrid Techniques, Hala Abdelwahed, Ashwaq Hashim, Ahmed Hasan Aug 2026

Segmentation Approach For A Noisy Iris Images Based On Hybrid Techniques, Hala Abdelwahed, Ashwaq Hashim, Ahmed Hasan

Engineering and Technology Journal

Iris recognition indicates the procedure of recognizing humans based on their both left and right iris patterns. Nowadays there is rapid progress in realizing an old dream of developing a user-friendly recognition system. Most of the new projects became a nightmare of security of the system. The prosperity of iris recognition aside from its attractive physical characteristics is led to developing an efficient feature extractor to attain the required objective of recognition. Fingerprint, facial, and iris biometric techniques are developed widely for identifying processing most boarded management points, access control, and military checkpoints. Hybridization between Daugman’s Integro Differential Operator (IDO) …

Go to article

Studying The Erosion Corrosion Behavior Of Nicraly Coating Layer Applied On Aisi 446 Stainless Steel Using Thermal Spray Technique, Ghufran Matrood, Ahmed Al-Gaban, Hussain Yousif Aug 2026

Studying The Erosion Corrosion Behavior Of Nicraly Coating Layer Applied On Aisi 446 Stainless Steel Using Thermal Spray Technique, Ghufran Matrood, Ahmed Al-Gaban, Hussain Yousif

Engineering and Technology Journal

Erosion-Corrosion behavior of NiCrAlY coatings deposited on 446 stainless steel samples by flame thermal spraying was performed in this research. The hardness of uncoated and coated sample is measured, using HVS-1000 Digital Micro hardness Tester. The results of hardness show that the coated samples have higher hardness than uncoated samples. Microstructure and phase analysis of the coating layer was observed by using optical microscope, X-ray diffraction (XRD), and SEM respectively. Erosion –Corrosion test was performed in different period of time (6, 12, and 18 hr.) using the erosion-corrosion system. The result shows that because of uniform distribution and homogeneous of …

Go to article

Experimental Investigation Of The Production Of Sustainable Lightweight Concrete, Mouhammed J. Lafta Aug 2026

Experimental Investigation Of The Production Of Sustainable Lightweight Concrete, Mouhammed J. Lafta

Engineering and Technology Journal

An experimental study on four types of coarse aggregate was conducted to produce lightweight concrete. These four types are namely; white limestone, red limestone, clay brick fragments, and pumice. Ordinary Portland cement was used for all examined mixes. Water to cement ratio (w/c) was modified according to the effect of coarse aggregate type on the workability of the resulted concrete for each mix. The reference concrete mix, which is normal concrete, water to cement ratio used was (0.5). The investigated characteristics for all concrete mixes were workability, compressive strength, dry density, absorption, and thermal conductivity. Results indicated that the aggregate …

Go to article

Electrochemical Characteristics Of High-Volume Fly Ash Lightweight Aggregate Concrete Incorporating Hydrated Lime, Tareq Al-Attar, Basil Al-Shathr, Mahmood Mohammed Aug 2026

Electrochemical Characteristics Of High-Volume Fly Ash Lightweight Aggregate Concrete Incorporating Hydrated Lime, Tareq Al-Attar, Basil Al-Shathr, Mahmood Mohammed

Engineering and Technology Journal

Currently, the use of high-volume fly ash lightweight concrete, HVFALWC, has acquired popularity as a durable, resource-efficient, and an option of sustainability for varying concrete applications. Electrochemical characteristics such as half- cell potential, AC resistance, chloride penetration, free chloride, and pH value, up to 180 days were investigated for this type of concrete that uses 50% and 60% of fly ash as a replacement of Portland cement. The effect of using 10% hydrated lime powder as a partial substitute for the weight of cementitious materials for HVFALWC on electrochemical properties was also studied. The results in this study showed the …

Go to article

Design And Implementation Of A Wireless System To Locate A User In Indoor Environments, Amnah Kareem, Wisam Ali, Manal Jasim Aug 2026

Design And Implementation Of A Wireless System To Locate A User In Indoor Environments, Amnah Kareem, Wisam Ali, Manal Jasim

Engineering and Technology Journal

The technology of indoor positioning has pulled in the consideration of researchers the expanding capability of smartphones and the advancement of sensor innovation, alongside the increase the time people spend working inside the building or being indoors. Sensor innovation, which is one of the most generally utilized information hotspots for indoor setting, has a favorable position that sensors can receive information from a cell phone without introducing any additional device. The idea of the proposed system is to use the Wi-Fi access points, inside the building, together with a Smartphone Wi-Fi sensor which lets the building administrator locate those carrying …

Go to article

Compressive Performance Of Corroded Reinforced Concrete Columns, Mushtaq Radhi, Maan S. Hassan, Iqbal Gorgis Aug 2026

Compressive Performance Of Corroded Reinforced Concrete Columns, Mushtaq Radhi, Maan S. Hassan, Iqbal Gorgis

Engineering and Technology Journal

Corrosion of reinforcement has been identified as the deterioration mechanism of reinforced concrete structures, which seriously affects the safety and integrity of structures. The corrosion of the embedded reinforcing steel in concrete is a major problem facing civil engineers today, which initiates 80% of the reinforced concrete structures deterioration. This paper reveals the outcomes of an experimental investigation on the mechanical performance (residual strength) of circular steel reinforced columns which have been damaged by corrosion of the steel rebar. Small scale circular reinforced concrete columns with a diameter of 100 mm and 300 mm in height were adopted. Different rates …

Go to article

Application Of Treated Iraqi Rice Husk As Adsorbent For Phosphate Removal From Aqueous Solution, Anaam Sabri, Yaser Hashim Aug 2026

Application Of Treated Iraqi Rice Husk As Adsorbent For Phosphate Removal From Aqueous Solution, Anaam Sabri, Yaser Hashim

Engineering and Technology Journal

In the present work, agricultural waste, (Iraqi rice husk A’anbar type) was developed with thermal and chemical treatments for using as an adsorbent to remove phosphate anion from aqueous solution and the thermal treatment at 500oC was the best.Batch experiments were conducted to obtain the maximum removal of phosphate via changing the parameters of the process, such as contact time, pH, adsorbent dose, initial solute concentration, and the existence of competitive anions upon the removal of phosphate and was investigated. The adsorbent characterization was performed employing Fourier transform infrared (FTIR), X-ray fluorescence (XRF), scanning electron microscope (SEM), the BET surface …

Go to article

Studying The Effect Of A New Mixed Cutting Fluid On Surface Roughness, Mohammed Shaker, Salah Jawad, Maan Tawfiq Aug 2026

Studying The Effect Of A New Mixed Cutting Fluid On Surface Roughness, Mohammed Shaker, Salah Jawad, Maan Tawfiq

Engineering and Technology Journal

This research studied the influence of cutting fluids and cutting parameters on the surface roughness for stainless steel worked by turning machine in dry and wet cutting cases. The work was done with different cutting speeds, and feed rates with a fixed depth of cutting. During the machining process, heat was generated and effects of higher surface roughness of work material. In this study, the effects of some cutting fluids, and dry cutting on surface roughness have been examined in turning of AISI316 stainless steel material. Sodium Lauryl Ether Sulfate (SLES) instead of other soluble oils has been used and …

Go to article

Accuracy Assessment Of Digital Elevation Models Produced From Different Geomatics Data, Imzahim Abdulkareem, Zina Samuel, Qassim Abdullah Aug 2026

Accuracy Assessment Of Digital Elevation Models Produced From Different Geomatics Data, Imzahim Abdulkareem, Zina Samuel, Qassim Abdullah

Engineering and Technology Journal

Digital Elevation Models (DEM) are now being used in several geospatial applications. DEMs play an important role in the preliminary surveys for constructing dams and reservoirs, highways, canals, and projects in which earth work is essential. In many remote sensing applications, DEMs have become a significant tool for InSAR (Interferometric Synthetic Aperture Radar) processing, ground cover classification and images ortho-rectification. In this study, the accuracy of DEMs obtained from ALOS V1.1, ASTER V2, SRTM V3 and other obtained from a pair of Pleiades high-resolution (PHR) 1B satellites in a study area were evaluated after comparing them with high accuracy GNSS/RTK …

Go to article

New Trend To Measure The Saturation Point And Suction In Granular Soil, Ahmed Al-Gharbawi, Mohammed Fattah, Mahmood Mahmood Aug 2026

New Trend To Measure The Saturation Point And Suction In Granular Soil, Ahmed Al-Gharbawi, Mohammed Fattah, Mahmood Mahmood

Engineering and Technology Journal

There are many methods to measure the suction and saturation point of any soil and the most used is Tensiometer. The objective of this research is to investigate a new trend to measure the saturation point and suction by using soil moisture content sensors (SMCS) and compare the procedure with tensiometer for the granular soil. The soil in this study has been prepared at three relative densities (5%, 35% and 75%) used. The results show that the readings of SMCS become stable when the water content is more than 20% with different relative densities. The relative density did not affect …

Go to article

Green Synthesis Of Iron Nanoparticles Using Black Tea Leaves Extract As Adsorbent For Removing Eriochrome Blue-Black B Dye, Dalal Ghanim, Ghayda Al-Kindi, Ahmed Hassan Aug 2026

Green Synthesis Of Iron Nanoparticles Using Black Tea Leaves Extract As Adsorbent For Removing Eriochrome Blue-Black B Dye, Dalal Ghanim, Ghayda Al-Kindi, Ahmed Hassan

Engineering and Technology Journal

Recently, the world has directed to find environmentally friendly and clean materials to be used to treat wastes difficult to treat in the traditional way such as dyes. The object of this study was to synthesize iron nanoparticles using black tea extracts in an environmentally sustainable method. Also, it was developed by supporting with bentonite, used to remove Eriochrome blue-black B dyes from synthesis wastewater of textile factory. From the results, it was noted that black tea leaf extract has reduced iron ions to iron nanoparticles at room temperature. Composite iron nanoparticles were characterized using Scanning Electron Microscope (SEM), and …

Go to article

Evaluation Of Eutrophication Levels In Al-Najaf Al-Ashraf Lake, Iraq (Biological And Chemical Study), Suhair Al-Sharifi, Salih Al-Bakri, Sataa Al-Bayati Aug 2026

Evaluation Of Eutrophication Levels In Al-Najaf Al-Ashraf Lake, Iraq (Biological And Chemical Study), Suhair Al-Sharifi, Salih Al-Bakri, Sataa Al-Bayati

Engineering and Technology Journal

Within Al-Najaf lake, that is one of the important shallow lakes in Iraq, the lake facing tremendous pressure due to encroachments, discharge of untreated domestic and industrial waste, drainage water from cultivated orchards, dumping of solid waste and illegal diversion of water and currently it's still suffering from these problems and neglect. The study aimed to evaluate the eutrophication status. Eutrophication is a grave problem in lakes, a knowledge about the eutrophic state help in providing a make efficient realization of the eutrophic problem.This study conducted to assess the Eutrophication level with a scale 0 – 100 depending on the …

Go to article

Analysis Of Wear, Tensile And Thermal Properties Of Poly Methyl Methacrylate Filled With Licorice Particle And Pomegranate Peels, Reem Mohammed, Marwah Attallah Aug 2026

Analysis Of Wear, Tensile And Thermal Properties Of Poly Methyl Methacrylate Filled With Licorice Particle And Pomegranate Peels, Reem Mohammed, Marwah Attallah

Engineering and Technology Journal

In the present work, analysis of wear behavior, tensile and thermal properties have been done for two sets Poly Methyl Methacrylate samples which is reinforced through licorice particles and pomegranate peels particles. Wear rate resistance is evaluated based on Taguchi’s experimental design L9 (MINITAB 18) under the three factors: weight fraction of fillers (1%, 2%, 3%, 4% and 5% wt.) sliding time (5, 8 and 11 min) and load applied (10, 15and 20N) using a pin-on-disk device. Results display that the samples (Poly Methyl Methacrylate +5% licorice particles and 5% pomegranate peels particles) show the best resistance wear of (0.045×10-6 …

Go to article

Incorporation Of Iraqi Rocks In The Production Of Eco-Friendly Cement Mortar, Rawnaq Mahdi, Aseel Al-Zubaidi, Hassan Hashim Aug 2026

Incorporation Of Iraqi Rocks In The Production Of Eco-Friendly Cement Mortar, Rawnaq Mahdi, Aseel Al-Zubaidi, Hassan Hashim

Engineering and Technology Journal

This work reports on the incorporation of Flint and Kaolin rocks powders in the cement mortar in an attempt to improve its mechanical properties and produce an eco-friendly mortar. Flint and Kaolin powders are prepared by dry mechanical milling. The two powders are added separately to the mortars substituting cement partially. The two powders are found to improve the mechanical properties of the mortars. Hardness and compressive strength are found to increase with the increase of powders constituents in the cement mortars. In addition, the two powders affect water absorption and thermal conductivity of the mortar specimens which are desirable …

Go to article

Comparative Study Of Specifications Between Local And Imported Water Pumps And An Energy-Efficient Local Developed Pump, Maryam Abdul Wahid, Lamyaa Dawood Aug 2026

Comparative Study Of Specifications Between Local And Imported Water Pumps And An Energy-Efficient Local Developed Pump, Maryam Abdul Wahid, Lamyaa Dawood

Engineering and Technology Journal

Conserving energy is one of those important requirements of the environment. In this research, an eco-friendly power saving Water pump [Air coolers] is developed. This development is based on GQFD. The model of this developed Water pump is drawn by a CAD solid model (version 7, Autodesk AutoCAD 2011). The electrical motor is responsible for the rotation of the pillar and further distributes Water inside the Air cooler [regardless of the size]. In the developed model motor is canceled where the rotation is throughout attachment to the Air cooler. A further prototype of this model is made were common and …

Go to article

Investigation The Electrode Wear Rate And Metal Removal Rate In Edm Process Using Taguchi And Anova Method, Safaa Ghazi Aug 2026

Investigation The Electrode Wear Rate And Metal Removal Rate In Edm Process Using Taguchi And Anova Method, Safaa Ghazi

Engineering and Technology Journal

The experimental work of this paper leads to electrical discharge machining (EDM). A system for machining in this process has been developed. Many parameters are studied such as current, pulse on-time, pulse off time of the machine. The main aim of this work is to calculate the metal removal rate (MRR) and electrode wear rate (EWR) using copper, electrodes when machining tool steel H13 specimens of a thickness (4mm).Different current rates are used ranging from (30, 42, and 54) Amp, pulse on-time ranging from (75, 100, and 125) and pulse off time ranging from (25, 50, and 75) found that …

Go to article

Optimum Design Of Journal Bearings Dimensions For Rotating Machines, Tariq Hammza, Ehab Abas, Nassear Hmoad Aug 2026

Optimum Design Of Journal Bearings Dimensions For Rotating Machines, Tariq Hammza, Ehab Abas, Nassear Hmoad

Engineering and Technology Journal

The values of Many parameters which involve in the design of fluid film journal bearings mainly depend on the bearing applied load when using the conventional design method to design the journal bearings, in this study, as well as applied bearing load, the dynamic response and critical speed have been used to calculate the dimensions of journal bearings. In the field of rotating machine, especially a heavy-duty rotating machines, the critical speed and response are the main parameters that specify bearing dimensions. The bearing aspect ratio (bearing length to bore diameter) and bearing clearance have been determined based on rotor …

Go to article

Optimization Of Cutting Parameters In Milling Process Using Genetic Algorithm And Anova (March 2020), Marwa Ibraheem Aug 2026

Optimization Of Cutting Parameters In Milling Process Using Genetic Algorithm And Anova (March 2020), Marwa Ibraheem

Engineering and Technology Journal

In this present work use a genetic algorithm for the selection of cutting conditions in milling operation such as cutting speed, feed and depth of cut to investigate the optimal value and the effects of it on the material removal rate and tool wear. The material selected for this work was Ti-6Al-4V Alloy using H13A carbide as a cutting tool. Two objective functions have been adopted gives minimum tool wear and maximum material removal rate that is simultaneously optimized. Finally, it does conclude from the results that the optimal value of cutting speed is (1992.601m/min), depth of cut is (1.55mm) …

Go to article

The Solubility Of Phosphogypsum And Recovery Of Heavy And Radioactive Elements, Waleed Rashid, Israa Alkadir, Moayyed Jalhom Aug 2026

The Solubility Of Phosphogypsum And Recovery Of Heavy And Radioactive Elements, Waleed Rashid, Israa Alkadir, Moayyed Jalhom

Engineering and Technology Journal

The essential purpose of this paper is to illustrate and inspect the leaching characteristics of Iraqi Phosphogypsum (PG). The paper presents the results of the dissolution characteristics of heavy and radioactive elements from PG, which is a by-product result from the industry of phosphate fertilizers. Leachability of heavy and radioactive elements in deionized water that has been inspected under various states of leaching, including solid/liquid ratio (10, 20 and 50 /1g/L) and temperatures (25, 45 and 85 °C), with constant other parameters such as string speed (300 rpm) and contact time (60 minutes). For the most analysis elements, the progressive …

Go to article

Study The Ductility Of Aluminum Alloy Processed By Asymmetric Rolling Process, Adil. Jaber Aug 2026

Study The Ductility Of Aluminum Alloy Processed By Asymmetric Rolling Process, Adil. Jaber

Engineering and Technology Journal

Asymmetric rolling refers to the conditions wherein velocities or diameters of two work rolls are different. Compared to symmetrical rolling, asymmetric rolling is more effective on microstructure modification and texture evolution. Intense shear deformation can be introduced into asymmetric rolling to enhance the ductility and formability of aluminum alloy and this is the aim of current research. The process of the asymmetrical rolling was done on specimens with different reductions (10%,15%, and 20% reductions). Then the tensile test was conducted at room temperature at the strain rate range between 0.33×10-3s-1 - 3.33×10-3s-1 to study the ductility property of the asymmetric …

Go to article

Adsorption Desulfurization Of Actual Heavy Crude Oil Using Activated Carbon, Yusra Abd Al-Khodor, Talib Albayati Aug 2026

Adsorption Desulfurization Of Actual Heavy Crude Oil Using Activated Carbon, Yusra Abd Al-Khodor, Talib Albayati

Engineering and Technology Journal

The strict new regulations to reduce the sulfur content of fuel require new economical and efficient ways to remove the sulfur from the organic sulfur components. In the current work, sulfur was removed from the actual crude oil containing 2.5 wt.% from southern Iraq, specifically the Halfaya Oil Field was studied using adsorption desulfurization with activated carbon (AC). The effects of different operating conditions, including the dose of AC (0.2-1.0 gm), time (15–120 min) and temperature (30–50°C) were investigated. The best operating conditions were obtained as 0.8 gm AC, 90 minutes and 50℃, respectively. Langmuir, Freundlich and Temkin isotherm models …

Go to article

The Effects Of Sunlight On Particle Matter & Radiation Pollution In Baghdad Airport Area, Fatima Hameed, Faris Mohammed, Abdul Hameed Al-Obaidy Aug 2026

The Effects Of Sunlight On Particle Matter & Radiation Pollution In Baghdad Airport Area, Fatima Hameed, Faris Mohammed, Abdul Hameed Al-Obaidy

Engineering and Technology Journal

The gasses emitted from the various activities, in addition to particle matter (PM10) play a major role in air quality deterioration. Particles matter and radiation are two of the most important parameters that exist in airports and were evaluated considering the variations in sunlight energy. The measured values were collected from eleven sites, which were chosen based on their influence by aviation activities. The measurements were compared to the (Iraqi Regulations and U.S EPA) for particle matter. While for radiation, the measurements were compared with the U.S. National Institute of Health (NIH), International Commission on Radiological Protection (ICRP), and the …

Go to article

Redesign Of Water Filter Workshop Using Slp, Nrjis Bassim, Luma Al-Kindi Aug 2026

Redesign Of Water Filter Workshop Using Slp, Nrjis Bassim, Luma Al-Kindi

Engineering and Technology Journal

Workshop and factory design is one of the most important problems facing companies to enhance their performance and productivity. Facility layout issue is a fundamental fragment of accommodations planning which have a target of organize all manufacturing entities to be located as a facility having the objective to improve manufacturing processes for an organization. The aim of this paper is to study, evaluate and then creating an improved water filter workshop adopting Muther’s (SLP) Systematic Layout Planning Procedure for increasing production and utilizing spaces. The case study in this paper is a practical one for the existing layout in Al-Faris …

Go to article

Extraction Of Zirconium From Iraqi Bauxite Ore, Israa Aziz, Moayyed Jalhom, Muhanad Kheriallah Aug 2026

Extraction Of Zirconium From Iraqi Bauxite Ore, Israa Aziz, Moayyed Jalhom, Muhanad Kheriallah

Engineering and Technology Journal

This research is devoted to the study of the extraction of zirconium from Iraqi Bauxite Ore by using hydrometallurgical method. The chemical analysis was done to the bauxite ore by using X-ray florescence, X-ray diffraction and atomic absorption spectroscopy. Zirconium Extraction was performed via three stages; the first stage is leaching of bauxite with sodium hydroxide for alumina leaching. The second stage is leaching of zirconium species from the remained powder produced from stage one after washing with deionized water and, nitric acid (HNO3 solutions). The results of the first stage has reflected the recovery of 42.27 % of Al2O3 …

Go to article

Properties And Behavior Of Starch Biopolymer Concrete, Waleed Abbas, Hawraa Mohsen Aug 2026

Properties And Behavior Of Starch Biopolymer Concrete, Waleed Abbas, Hawraa Mohsen

Engineering and Technology Journal

Starch act as natural polymer has been got from Wheat, Tapioca, and Corn. Corn starch has been investigated as biopolymer and has been added to concrete in different percentages (0%, 0.5%, 1%, and 1.5%) by cement weight and the study shows the effect of using starch on some properties of concrete in the fresh state ( slum and fresh density) and at hardened state (compressive strength, splitting tensile strength and flexural strength) at 28 days. The mix proportion was(1:2.3:2.3) (cement: sand: gravel) respectively and at constant w/c equal to 0.47.The results indicate that the optimum percentage of starch addition was …

Go to article

Effect Of Sic-Cu Electrode On Material Removal Rate, Tool Wear And Surface Roughness In Edm Process, Yousif Laibi, Saad Shather Aug 2026

Effect Of Sic-Cu Electrode On Material Removal Rate, Tool Wear And Surface Roughness In Edm Process, Yousif Laibi, Saad Shather

Engineering and Technology Journal

Electrical discharge machining (EDM) is one of the most common non-traditional processes for the manufacture of high precision parts and complex shapes. The EDM process depends on the heat energy between the work material and the tool electrode. This study focused on the material removal rate (MRR), the surface roughness, and tool wear in a 304 stainless steel EDM. The composite electrode consisted of copper (Cu) and silicon carbide (SiC). The current effects imposed on the working material, as well as the pulses that change over time during the experiment. When the current used is (8, 5, 3, 2, 1.5) …

Go to article

The Formability And Elongation Of Aluminum Alloys Aa5083 And Aa3003 For Micro-Truss Sandwiches Manufacturing, Arwa Tawfeeq, Matthew Barnett Aug 2026

The Formability And Elongation Of Aluminum Alloys Aa5083 And Aa3003 For Micro-Truss Sandwiches Manufacturing, Arwa Tawfeeq, Matthew Barnett

Engineering and Technology Journal

The development in the manufacturing of micro-truss structures has demonstrated the effectiveness of brazing for assembling these sandwiches, which opens new opportunities for cost-effective and high-quality truss manufacturing. An evolving idea in micro-truss manufacturing is the possibility of forming these structures in different shapes with the aid of elevated temperature. This work investigates the formability and elongation of aluminum alloy sheets typically used for micro-truss manufacturing, namely AA5083 and AA3003. Tensile tests were performed at a temperature in the range of 25-500 ○C and strain rate in the range of 2x10-4 -10-2 s-1. The results showed that the clad layer …

Go to article

Path Planning Of Mobile Robot Using Improved Artificial Bee Colony Algorithm, Rkaa Kamil, Mohamed Mohamed, Bashra Oleiwi Aug 2026

Path Planning Of Mobile Robot Using Improved Artificial Bee Colony Algorithm, Rkaa Kamil, Mohamed Mohamed, Bashra Oleiwi

Engineering and Technology Journal

A modified version of the artificial Bee Colony Algorithm (ABC) was suggested namely Adaptive Dimension Limit- Artificial Bee Colony Algorithm (ADL-ABC). To determine the optimum global path for mobile robot that satisfies the chosen criteria for shortest distance and collision–free with circular shaped static obstacles on robot environment. The cubic polynomial connects the start point to the end point through three via points used, so the generated paths are smooth and achievable by the robot. Two case studies (or scenarios) are presented in this task and comparative research (or study) is adopted between two algorithm’s results in order to evaluate …

Go to article

Absorption Of Carbon Dioxide Into Aqueous Ammonia Solution Using Blended Promoters (Mea, Mea+Pz, Pz+Argk, Mea+Argk), Farah Al-Sudani Aug 2026

Absorption Of Carbon Dioxide Into Aqueous Ammonia Solution Using Blended Promoters (Mea, Mea+Pz, Pz+Argk, Mea+Argk), Farah Al-Sudani

Engineering and Technology Journal

Absorption of CO2 into promoted-NH3 solution utilize a packed column (1.25 m long, 0.05m inside diameter) was examined in the present work. The process performance of four different blended promoters monoethanolamine (MEA)+ piperazine (PZ), piperazine (PZ)+ potassium argininate (ArgK) and monoethanolamine +potassium argininate was compared with unpromoted-NH3 solution by evaluated the absorption rate (φ_(CO_2 )) and overall mass transfer coefficient (K_(G,CO_2.) a_v) over the operating ranges of the studied process variables (1-15Kpa initial partial pressure of CO2, 5-15 Liter/min gas flow rate, 0.25-0.85 Liter/min liquid flow rate). The results exhibit that the absorption behavior and efficiency can be enhanced by …

Go to article

Study Of The Influence Of Different Variables On Clathrate Practical Applications In Phenol Removal, Riyadh Al- Mukhtar, Shurooq Remedhan, Marwa Hussin Aug 2026

Study Of The Influence Of Different Variables On Clathrate Practical Applications In Phenol Removal, Riyadh Al- Mukhtar, Shurooq Remedhan, Marwa Hussin

Engineering and Technology Journal

In this work, effluent wastewater treated by using cyclopentane-water Clathrate system to treat water contaminates with phenols at concentrations (300, 250, 200, 150, 100 and 50) ppm in order to investigate the capability of process performance. Clathrate or hydrate are strong crystal structures including water (host particles) and little particles (guest particles). The experiments were conducted at different cyclopentane-water volume ratios (1: 2 and 1: 4). The work was done in a 250 ml glass cell with an electric mixer at a constant speed of 280 cycles per minute. Phenol was highest removal percent at 300ppm at 1: 4volume ratio …

Go to article

First Prev Next Last