American Journal of Scientific Research and Essays


Design and Implementation of an Eye-Controlled Self-Driving Wheelchair

Research article of American Journal of Scientific Research and Essays Design and Implementation of an Eye-Controlled Self-Driving Wheelchair Hatem Al-Doais*, Farouk A. K. Al-Fuhaidy*, Ahmed T. Al-Oqabi**, Esmail A. Qasabah**, Ahmed A. Zabarah**. *Ibb Univ, **Sanaa University The purpose of this paper is to develop a mechatronic system, the Eye-Controlled Self-Driving Wheelchair (ECSDW), that can help paralyzed, handicapped or any peoples who have an injury in their upper part of the body to be easily and successfully navigate autonomously from one position to another within indoor environments while avoiding obstacles dynamically. This research aims to present a unique approach which can be achieved inexpensively and has the eye-controlled additional property with robust autonomous assistive navigation when compared to a commercial existing wheelchair. The proposed ECSDW system platform is capable of localization and mapping, as well as robust obstacle avoidance, using only a commodity RGB-D sensor and wheel odometry. The development of the proposed ECSDW system was firstly carried by simulating the navigation of the wheelchair using Gazebo and Rviz running in ROS. Secondly, the hardware was assembled and built and the ROS nodes were implemented using Python programming language. Finally, the GUI was designed and implemented for a custom map so that, the disabled user can stare to a specific location using the GUI, with the help of eye-tracker sensor, which accepts directed eye signals and direct the wheelchair to navigate to the desired position autonomously. Keywords: Eye-Tracking,Self-Driving,Odomtry,ROS, Gazebo, SLAM, Qt ...

Effects of Radiation and Heat Generation on Magnetohydrodynamic Free Convection Flow along a Horizontal Cylinder with Conduction

Research article of American Journal of Scientific Research and Essays Effects of Radiation and Heat Generation on Magnetohydrodynamic Free Convection Flow along a Horizontal Cylinder with Conduction K. M. Safiqul Islam1, M. A. Alim2 and Md. Rezaul Karim3 1Department of Mathematics, Gowripur Govt. College, Mymensingh 2Department of Mathematics, Bangladesh University of Engineering and Technology, Dhaka -1000, Bangladesh. 3Department of Mathematics, Jagannath University, Dhaka-1100, Bangladesh In this paper, the flow characteristics and the heat transfer process due to natural convection and conduction along a horizontal cylinder in presence of radiation, magnetic and heat generation effects are examined. The effects of radiation, magnetic and heat generation on electrically conducting fluid in natural convective flow along a non-linear system of partial differential equations is reduced to local non-similar horizontal cylinder with conduction have been studied in this paper. The governing boundary layer equations for this phenomenon are transformed into a non-dimensional form and the resulting partial differential forms by adopting appropriate suitable transformations. The transformed boundary layer equations are then solved numerically by using the implicit finite difference method. Numerical results of the velocity profiles and temperature distribution, coefficient of local skin friction and local rate of heat transfer distribution for the Prandtl number, radiation, magnetic and heat generation parameters are presented graphically. Detailed discussion is given for the effects of the aforementioned parameters. Significant effect is found in heat transfer distribution for Prandtl number and radiation parameter. The thermal boundary layer thickness of Prandtl number is clearer than radiation parameter. Important effect is found in heat transfer distribution in Heat Generation effect. An excellent graph is found in magnetic effect for heat transfer profile, which is as like as a spiral situation. Keywords: stream function, free convection, cylinder, Prandtl number, Grashof number ...

Research status and development direction of controlling factors of graphite mineralization in coal measures

Research article of American Journal of Scientific Research and Essays Research status and development direction of controlling factors of graphite mineralization in coal measures Tian Yuan1, Li Xiaobo2, Gong Liubing1, Li Haihua1, Yang Rui1, Xu Bohui3* 1School of Earth Science and Engineering, Hebei University of Engineering, Handan, Hebei 056038, China. 2Shandong No.5 Geo-mineral Prospecting Institute, Tai'an, Shandong 271000, China. 3male, associate professor, master's tutor, mainly engaged in research on the processing and utilization of inorganic non-metallic minerals. Coal-measure graphite mineralization control is affected by many factors. In order to explore the ore-forming control factors and influence mechanism, the paper comprehensively analyzes the influence and mechanism of each factor from five aspects of coal rock composition, coal grade, temperature, pressure and mineralizer, combined with geological examples. The results show that in the process of graphite mineralization in coal measures, the components of coal and rock have the ability of graphitization, but the higher the degree of metamorphism of coal as carbon source, the higher the degree of graphitization of products, the higher the ore-forming temperature, and the higher the degree of graphitization. The development of tectonic movement promotes the graphitization, but the degree of graphitization is different and complicated due to the stress dissipation. Different minerals in coal have different effects on graphite mineralization in coal measures, and its mechanism needs to be further explored. Finally, it is pointed out that the research direction of coal series graphite lies in the different graphitization mechanism of the same rank coal and the different influence mechanism of different minerals in coal. Fund Project: Study on the structural order degree of cryptocrystalline graphite and its ore-forming controlling factors in coal measures of Hebei natural fund (D2019402055). Keywords: Coal series graphite; Metallogenic mechanism; Graphitization ...

Analysis of Solvent Effect on Formation Constants and Speciation of Cobalt(II), Copper(II) and Lead(II) Complexes of L-Methionine and Uracil

Research article of American Journal of Scientific Research and Essays Analysis of Solvent Effect on Formation Constants and Speciation of Cobalt(II), Copper(II) and Lead(II) Complexes of L-Methionine and Uracil 1Ishola, K.T.*,  2Oladipo, M.A.,3Ajayeoba, T. A. and 1Odedokun, O.A. 1 Department of Chemistry, Federal College of Education,(Special), Oyo,Oyo state,Nigeria. 2 Department of Chemistry, Ladoke Akintola University of Technology,Ogbomoso, Oyo state,Nigeria 3Department of Chemistry, Obafemi Awolowo University, Ile-ife, Osun State, Nigeria. The analysis of coordination of chelating agents to metal ions in the formation of complexes under different experimental conditions provide information on the effects of the conditions on the extent of the coordination of the ligands to the metal ions for potential applications in bioinorganic and environmental Inorganic Chemistry. The effect of solvent on the coordination of L-methionine (primary ligand) and uracil (secondary ligand) to Co(II), Cu(II) and Pb(II) ions in the formation of binary and ternary complexes have been potentiometrically investigated in water and 40% (v/v) ethanol- water media at 27 °C and ionic strength of 0.02 mol dm–3was maintained by using NaNO3. The proton-ligand stability constants and formation constants of the binary and ternary systems were established under the experimental conditions. The formation constants of the ternary complexes were numerically compared with the corresponding binary complexes in terms of Δ log K and percentage relative stabilization (%RS). Speciation of the metal ions, binary and ternary complexes as a function of pH in the solutions was investigated by using HYSS program. The ligands were observed to form more stable ternary complexes than binary complexes. The proton-ligand stability constants the ligands and the formation constants of the metal complexes were found to be higher in 40% (v/v) ethanol-water than water. The distribution of the species revealed a decrease in the metal ion concentrations with increase in the concentrations of the binary and ...

Prof. Dr. Mohammad Mehdi Rashidi
Shanghai Key Lab of Vehicle Aerodynamics and Vehicle Thermal Management, Systems, Tongji Clean Energy Institute of advanced studies- Tongji University.

Dr. Milena Palczewska
Vice Dean for student affairs, Military Faculty, War Studies University, al. gen. Antoniego Chruściela “Montera” 10300-910 Warszawa

Dr. Piyush Chaudhary
Assistant Professor, Deptt of Ras Shastra (Ayurvedic Pharmaceutics), Incharge, Gurukul Pharmacy, MSM Institute of Ayurveda, BPS Women University, Khanpur Kalan, Sonepat, Haryana

Dr. M. M. Awad
Mechanical Power Engineering Department, Faculty of Engineering, Mansoura University, Mansoura, Egypt

Dr.Eng. Ahmed Kadhim Hussein
College of Engineering, Department of Mechanical Engineering, Babylon University, Babylon City, HIILA , IRAQ

Dr. KATSURA Hidemitsu 
Guest Lecturer for ICEEE-2016, Coimbatore Institute of Technology (CIT) in COIMBATORE, TAMIL NADU 641014, INDIA

Dr. Sang-Bing Tsai
Prof., School of Business, Dalian University of Technology, Panjin, 124221, China; Prof., Zhongshan Institute, University of Electronic Science and Technology of China; Prof., TEDA College, Nankai University, China

Dr. Deepmala 
Visiting Scientist, SQC & OR Unit, Indian Statistical Institute

Dr. Begum Sertyesilisik
Assoc. Prof. at the Istanbul Technical University

Dr. Palani Elumalai
National Research Foundation Fellow of Korea, Department of Chemistry & Biology, University of Ulsan

Dr. Shittu Lukeman Adelaja Joseph
HOUSTON, TX. 77099, USA

Prof. Dr. Naqib Ullah Khan
Department of Plant Breeding and Genetics, The University of Agriculture, Peshawar 25130, Khyber Pakhtunkhwa, PAKISTAN.

Dr. V. Ananthaswamy
Assistant Professor, The Madura College (Autonomous), Madurai – 625 011, Tamil Nadu, India.

Prof. Dr. M.Nageeb Rashed
Professor of Analytical and Environmental Chemistry, Faculty of Science, Aswan University, Egypt

Dr. Hossein Kazemian
Faculty& Director; Northern Analytical Lab Services (NALS), University of Northern British Columbia (UNBC), 3333 University Way, Prince George, BC, Canada, V2N 4Z9

Dr. Vishnu Narayan Mishra
Applied Mathematics and Humanities Department, Sardar Vallabhbhai National Institute of Technology.

Dr. Balaram Kundu
Associate Professor, Department of Mechanical Engineering, Jadavpur University, Kolkata – 700 032, INDIA

Dr. Sergio Nardini
Associate Professor, Dipartimento di Ingegneria Industriale e dell’Informazione, Seconda Università degli Studi di Napoli, via Roma 29, 81031 Aversa (CE)

Dr. Sanjay Mishra
Professor, Department of Biotechnology, School of Engineering & Technology, IFTM University

Dr. Lakshmi Narayan Mishra
Professor, Department of Mathematics, National Institute of Technology

Dr. DHANANJAYA REDDY
Dept.of Mathematics, Assistant Professor In Mathematics, Govt. Degree & PG College

Dr. S. Krishna Murthy
Associate Professor, Department of Applied Mathematics,Defence Institute of Advanced Technology, Deemed University(DU), Girinagar, Pune

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1. Shuo Zhang. Experimental study on scouring of coarse sand and fine sand seabed caused by propeller washing in front of solid wharf.American Journal of Scientific Research and Essays, 2018 3:14. DOI:10.28933/ajsre-2018-12-1805 
2.Zhang Bo and Xie Xionggang. Numerical simulation and analysis of coupled Thermal-Hydrological-Mechanical in coalbed methane heating mining. American Journal of Scientific Research and Essays, 2018 3:13. DOI:10.28933/ajsre-2018-12-0808 

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