Al-Khwarizmi Engineering Journal最新文献_第6页

Kinetics of Electrochemical Removal of Nickel using Bio-electrochemical Reactor with Packed Bed Rotating Cylinder Cathode 填料床旋转圆柱阴极生物电化学反应器电化学除镍动力学研究

Al-Khwarizmi Engineering Journal Pub Date : 2022-09-08 DOI: 10.22153/kej.2022.08.003

Zahraa Zahraa A.kadhim, Ali H. Abbar

{"title":"Kinetics of Electrochemical Removal of Nickel using Bio-electrochemical Reactor with Packed Bed Rotating Cylinder Cathode","authors":"Zahraa Zahraa A.kadhim, Ali H. Abbar","doi":"10.22153/kej.2022.08.003","DOIUrl":"https://doi.org/10.22153/kej.2022.08.003","url":null,"abstract":"The kinetics of nickel removal from aqueous solutions using a bio-electrochemical reactor with a packed bed rotating cylinder cathode was investigated. The effects of applied voltage, initial nickel concentration, the rotation speed of the cathode, and pH on the reaction rate constant (k) were studied. The results showed that the cathodic deposition occurred under mass transfer control for all values of the applied voltage used in this research. Accordingly, the relationship between concentration and time can be represented by a first-order equation. The rate constant was found to be dependent on the applied voltage, initial nickel concentration, pH, and rotation speed. It was increased as the applied voltage increased and decreased as the initial concentration increased. Its relation to the applied voltage can be fitted as follows:\u0000where ko =0.01695 min-1 and -β=0.431. pH and rotation speed have two dissimilar effects on the rate constant. Increasing the pH from 3-6 leads to an increase in the rate constant, while a decrease in the rate constant beyond pH=6 has occurred. Increasing the rotation from 100 to 300 rpm results in an increase in the rate constant. However, the rate constant decreases significantly beyond a rotation speed of 300 rpm.\u0000 ","PeriodicalId":7637,"journal":{"name":"Al-Khwarizmi Engineering Journal","volume":"86 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80731058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Design and Analysis of a Spraying Robot 喷涂机器人的设计与分析

Al-Khwarizmi Engineering Journal Pub Date : 2022-09-08 DOI: 10.22153/kej.2022.07.001

Fatima M. Jasim, Malik M. Ali, Ali H. Hamad

引用次数: 0

Path Planning and Obstacle Avoidance of a Mobile Robot based on GWO Algorithm 基于GWO算法的移动机器人路径规划与避障

Al-Khwarizmi Engineering Journal Pub Date : 2022-06-16 DOI: 10.22153/kej.2022.03.003

T. Abbas, A. Shabeeb

{"title":"Path Planning and Obstacle Avoidance of a Mobile Robot based on GWO Algorithm","authors":"T. Abbas, A. Shabeeb","doi":"10.22153/kej.2022.03.003","DOIUrl":"https://doi.org/10.22153/kej.2022.03.003","url":null,"abstract":"تعد مشكلة تخطيط المسار من بين المشكلات الأكثر أهمية في مجال أبحاث الروبوتات. نظرًا لأنه مرتبط بإيجاد طريق آمن وفعال في بيئة مزدحمة للروبوتات المتنقلة ذات العجلات ، ويعتبر شرطًا أساسيًا مهمًا لنجاح أي مشروع روبوت متنقل. تقترح هذه الورقة التخطيط الأسرع والأمثل لمسار الروبوت المتحرك ذي العجلات مع تجنب الاصطدام باستخدام خوارزمية تسمى تحسين الذئب الرمادي (GWO) كطريقة للعثور على أقصر الطرق وأكثرها أمانًا. تهدف أهداف البحث في هذه الدراسة إلى تحديد أفضل مسار ملاحي مع مراعاة تأثير عدد المعوقات والتكرارات على أداء الخوارزمية لإيجاد المسار الأفضل. أثبتت المحاكاة نجاح الطريقة المقترحة في إيجاد الطريق الآمن والأقصر. أظهر تقييم الخوارزمية المقترحة وجود علاقة بين زيادة عدد العوائق وعدد التكرارات كمعلمات تأثير على طول المسار والوقت المطلوب لإيجاد المسار الأمثل.","PeriodicalId":7637,"journal":{"name":"Al-Khwarizmi Engineering Journal","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85130774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Comparative study of vibration analysis in rotary shafts between Rayleigh's and Dunkerley's methods Rayleigh法与Dunkerley法旋转轴振动分析的比较研究

Al-Khwarizmi Engineering Journal Pub Date : 2022-06-16 DOI: 10.22153/kej.2022.05.001

Karrar Baher, Qasim A. Atiyah, I. Abdulsahib

{"title":"Comparative study of vibration analysis in rotary shafts between Rayleigh's and Dunkerley's methods","authors":"Karrar Baher, Qasim A. Atiyah, I. Abdulsahib","doi":"10.22153/kej.2022.05.001","DOIUrl":"https://doi.org/10.22153/kej.2022.05.001","url":null,"abstract":"The importance of vibrations in rotating rotors in engineering applications has been examined, as has the best approach to interpreting vibration data. The most extensively used analytical approaches for rotating shaft vibration analysis have been investigated. In this research, a detailed study was made of the Rayleigh and Dunkerley methods due to their importance in the special calculations to find the amplitude of vibrations in the rotation system. The multi-node method was used to calculate both Dunkerley's and Rayleigh's methods. An experimental platform was built to study the vibrations that occur in the rotating shafts, and the results were compared with theoretical calculations and with different distances of the bearings. It proved that there is very little error between the experimental and theoretical results. The vibration signal from the sensors was analyzed using the LABVIEW program. Rayleigh's method was compared to the exact method, and it was considered the most accurate method. It was found that it made very little difference, up to about 0.06%. As for the Dunkerley method, the difference between it and the proper method is about 4%, which is acceptable. Then a comparison was made between Rayleigh's and Dunkerley's methods, and it was found that Dunkerley's method is the most appropriate in the calculations.","PeriodicalId":7637,"journal":{"name":"Al-Khwarizmi Engineering Journal","volume":"117 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79091747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Estimate and Analysis the Availability of Generator in Electric Power Plant Using ANN 利用人工神经网络对电厂发电机可用性进行估计与分析

Al-Khwarizmi Engineering Journal Pub Date : 2022-06-16 DOI: 10.22153/kej.2022.04.001

A. Awad, A. A. Ahmed, Osamah Abdulateef

{"title":"Estimate and Analysis the Availability of Generator in Electric Power Plant Using ANN","authors":"A. Awad, A. A. Ahmed, Osamah Abdulateef","doi":"10.22153/kej.2022.04.001","DOIUrl":"https://doi.org/10.22153/kej.2022.04.001","url":null,"abstract":"The large number of failure in electrical power plant leads to the sudden stopping of work. In some cases, the necessary reserve materials are not available for maintenance which leads to interrupt of power generation in the electrical power plant unit. The present study, deals with the determination of availability aspects of generator in unit 5 of Al-Dourra electric power plant. In order to evaluate this generator's availability performance, a wide range of studies have been conducted to gather accurate information at the level of detail considered suitable to achieve the availability analysis aim. The Weibull Distribution is used to perform the reliability analysis via Minitab 17, and Artificial Neural Networks (ANNs) by approaching of Feed-Forward, Back-Propagation. Operating data from the years 2015–2017 were used to calculate the availability by traditional method (Weibull distribution) and train the ANNs, while data from the year 2018 of operation were used to verify the model. The study implies that the ANN may be able to forecast the availability of the generator with a correlation coefficient (R) 0.99874 and a Mean Square Error (MSE) 5.6937E-06 between the availability predicted by ANN and Weibull distribution output.\u0000 ","PeriodicalId":7637,"journal":{"name":"Al-Khwarizmi Engineering Journal","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90246771","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Intelligent Tuning Control of two Link Flexible Manipulator with Piezoelectric Actuator 压电作动器双连杆柔性机械臂的智能整定控制

Al-Khwarizmi Engineering Journal Pub Date : 2022-06-16 DOI: 10.22153/kej.2022.06.001

Marwah Abdulazeem Ali, Ahmed Abdul Hussein Ali

引用次数: 0

Developing an Automated Vision System for Maintaing Social Distancing to Cure the Pandemic 开发一种保持社会距离的自动视觉系统，以治疗大流行

Al-Khwarizmi Engineering Journal Pub Date : 2022-03-19 DOI: 10.22153/kej.2022.03.002

Fatima Hardan, Ahmed R. J. Almusawi

{"title":"Developing an Automated Vision System for Maintaing Social Distancing to Cure the Pandemic","authors":"Fatima Hardan, Ahmed R. J. Almusawi","doi":"10.22153/kej.2022.03.002","DOIUrl":"https://doi.org/10.22153/kej.2022.03.002","url":null,"abstract":"The world is currently facing a medical crisis. The epidemic has affected millions of people around the world since its appearance. This situation needs an urgent solution. Most countries have used different solutions to stop the spread of the epidemic. The World Health Organization has imposed some rules that people should adhere. The rules are such, wearing masks, quarantining infected people and social distancing. Social distancing is one of the most important solutions that have given good results to confront the emerging virus. Several systems have been developed that use artificial intelligence and deep learning to track social distancing. In this study, a system based on deep learning has been proposed. The system includes monitoring and detecting people besides measuring the social distance between them. The proposed system consists of two parts: (1) detecting the faces of people using the Viola-Jones algorithm. The Cascade classifiers were trained. The Cascade classifiers used in the algorithm with feature descriptors to detect side faces and wear masks. Hence, training is dominant for detection. (2) measurement of the Euclidean distance between the centers of the rectangles of the people who were revealed in the first part. The distance between individuals' is measured to check how well they adhere to social distancing. The results revealed that the proposed system can perform well in applying images to track the distance between people.","PeriodicalId":7637,"journal":{"name":"Al-Khwarizmi Engineering Journal","volume":"9 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90628071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Enhancement of System Security by Using LSB and RSA Algorithms 利用LSB和RSA算法增强系统安全性

Al-Khwarizmi Engineering Journal Pub Date : 2022-03-19 DOI: 10.22153/kej.2022.03.001

Muna M. Hummady, Ameer Hussein Morad

引用次数: 2

Effect of Mass Ratio on Phytoremediation of Nickel Contaminated Water 质量比对镍污染水体植物修复的影响

Al-Khwarizmi Engineering Journal Pub Date : 2022-03-19 DOI: 10.22153/kej.2022.02.001

Maha Taha, Israa Abdulwahab Al-Baldawi, Siti Rozaimah Sheikh Abdullah, N. Ismail, Salwa Shamran Jasim

{"title":"Effect of Mass Ratio on Phytoremediation of Nickel Contaminated Water","authors":"Maha Taha, Israa Abdulwahab Al-Baldawi, Siti Rozaimah Sheikh Abdullah, N. Ismail, Salwa Shamran Jasim","doi":"10.22153/kej.2022.02.001","DOIUrl":"https://doi.org/10.22153/kej.2022.02.001","url":null,"abstract":" \u0000Water pollution is one of the global challenges that the society must address in the 21st century aiming to improve the water quality, reduce human pollutants and ecosystem health impacts. In phytotoxicity test, the plant of Iresine herbstii was exposed to remove nickel from simulated wastewater using two different ratios (mass of plant to the mass of nickel) (,Rp/Ni) for 21 days with sub-surface batch system. During the exposure period, the removal of Ni concentrations (2, 5 and 10 mg/L) for two mass ratio (2,800 and 34,000) were (83.6%, 77.2%, 78.0%) and (86.8%, 97% and 95.6%), respectively. final result of the rate was found that the highest removal occurred, 97%, at a mass ratio of 34,000 and a nickel concentration of 5 mg/L. Metal accumulation mechanism of plants were examined using bioconcentration factor (BCF) and translocation factor (TF) of metals which indicated that I. herbstii is suitable for phytostabilization of Ni (BCF>1 and TF<1). Therefore, the ability of I. herbstii to treat wastewater contaminated with nickel that I. herbstii is considered a potential plant to remove Ni from contaminated water.","PeriodicalId":7637,"journal":{"name":"Al-Khwarizmi Engineering Journal","volume":"416 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74374893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Effect of MIG Welding Parameters on the Mechanical Properties of AISI 304 Austenitic Stainless Steels MIG焊接参数对AISI 304奥氏体不锈钢力学性能的影响

Al-Khwarizmi Engineering Journal Pub Date : 2022-03-19 DOI: 10.22153/kej.2022.01.001

Amjed M. Jebbur, Salah S. Abed AlKareem, F. Mustafa

{"title":"Effect of MIG Welding Parameters on the Mechanical Properties of AISI 304 Austenitic Stainless Steels","authors":"Amjed M. Jebbur, Salah S. Abed AlKareem, F. Mustafa","doi":"10.22153/kej.2022.01.001","DOIUrl":"https://doi.org/10.22153/kej.2022.01.001","url":null,"abstract":"The present research investigates joints welding of 304L austenitic stainless steel using metal inert gas (MIG) welding method. The research explores the effect of process parameters (arc voltage, wire feed rate, and electrode wire diameter) on the mechanical properties of stainless steel. The above variables are varied respectively with 18.5, 19, 19.5 V, 116, 127, 137 mm/s, and 0.8, 1, 1.2 mm, with E308L as a filler electrode. The design matrix of the experiments was determined using the design of experiment (DOE) program Minitab 17 based on the levels of input elements used. The Taguchi orthogonal matrix methodology (Taguchi) technique was used to develop some empirical analysis for the maximum tensile strength and proper surface hardness as a function of the welding parameters mentioned above. The ( ) analysis was used to statistically verify the model's adequacy. The results show that the wire feed rate had the greatest effect on the tensile strength of the welded joints when choosing the medium level of arc voltage (19 V), while the arc voltage had a substantial influence on the micro-hardness of all welded joints. The weld-joint zone is given a higher micro-hardness value compared to the base metal zone.\u0000 ","PeriodicalId":7637,"journal":{"name":"Al-Khwarizmi Engineering Journal","volume":"26 6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89683356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1