Research ArticleOpen accessIn the abstractNew Inorganic Ion-exchange Material for the Selective Removal of Fluoride from Potable Water Using Ion-selective ElectrodeRasheed M.A.Q. JamhourAn ion-exchange procedure involving the selective retention of fluoride ions from aqueous solutions containing 1, 5, 10, 20 and 50 mg F- L-1 using a new inorganic ion exchanger zirconium(IV) oxide-ethanolamine ZrO-EA and its application to fluoride removal from potable water has been described. A column equilibrium studies, batch process and different analytical parameters such as concentration, pH and temperature … …American Journal of Environmental Sciences, Vol. 1, Issue 1 · 31 Mar 2005 · 7,189 accessesView PDFCite
Research ArticleOpen accessIn the abstractAn Algebraic Approach to the Harmonic Oscillator Plus an Inverse Square Potential in Three DimensionsShi-Hai Dong, M. Lozada-CassouThe eigenfunctions and eigenvalues of the three-dimensional Schrödinger equation with a harmonic oscillator plus an inverse square interaction are obtained. A realization of the ladder operators for the wave functions is studied. It is found that these operators satisfy the commutation relations of an SU(1,1) group. The closed analytical expressions for the matrix elements of different functions ρ and ρd/dρ … …American Journal of Applied Sciences, Vol. 2, Issue 1 · 31 Jan 2005 · 7,283 accessesView PDFCite
Research ArticleOpen accessIn the abstractSolving Linear Programming Problems on the Parallel Virtual Machine EnvironmentJrJung Lyu, Hsing Luh, Ming-Chang LeeThis study developed a parallel algorithm to efficiently solve linear programming models. The proposed algorithm utilizes the Dantzig-Wolfe Decomposition Principle and can be easily implemented in a general distributed computing environment. The analytical performance of the well-known method, including the speedup upper bound and lower bound limits, was derived. Numerical experiments are also provided in order to verify the complexity … …American Journal of Applied Sciences, Vol. 1, Issue 2 · 30 Jun 2004 · 7,841 accessesView PDFCite
Research ArticleOpen accessIn the abstractRoute Optimization using Hybrid GRU Learning Model for SDN and Edge-Based VANET TopologySavitha Kumar, Chandrasekar ChinnasamyIntelligent Transportation System (ITS) offersoutstanding features, including security applications and emergency alerts.Unfortunately, ITS limits traffic control services, adaptability, andadjustability due to the traffic volume. Hence, expanding the standard VehicularAd hoc Networks (VANET) framework is a requirement. As a result, in the latestdays, the concept of Software-Defined Networking based Vehicular Ad hocNetworks (SDN-VANETs) has drawn considerable attention, creating VANETssmarter. The SDN-VANETs … …Journal of Computer Science, Vol. 18, Issue 8 · 26 Aug 2022 · 6,169 accessesView PDFCite
Research ArticleOpen accessIn the abstractNovel De-Oiling of Oil-WaterEmmanuel Ewa Ekeng, Jonah Chukwuemeka AgunwambaThe study anchors on developing a mechanistic model for oil-water separation. Over the years, researchers have been working on how to improve the quality of produced water effluent especially from oil and gas operations sent to the receiving waters. Despite the standard set for compliance by regulatory bodies like united nation agency, ministry, departments and other agencies both state and … …American Journal of Applied Sciences, Vol. 17, Issue 1 · 2 Sep 2020 · 6,952 accessesView PDFCite
Research ArticleOpen accessIn the abstractInverse Kinematics (IK) Solution of a Robotic Manipulator using PYTHONR. Venkata Neeraj Kumar, R. SreenivasuluPresent global engineering professionals feels that, robotics is a somewhat young field with extremely ruthless target, the crucial one being the making of machinery/equipment that can perform and feel like human beings. Robot kinematics deals with the study of motion of linkages which includes displacement, velocities and accelerations of a robot manipulator analytically. Deriving the proper kinematic models for an … …Journal of Mechatronics and Robotics, Vol. 3, Issue 1 · 10 Sep 2019 · 13,894 accessesView PDFCite
Research ArticleOpen accessIn the abstractA Geometric Generalization of the Planar Gale-Nikaidô TheoremE. Cabral BalreiraThe Gale-Nikaidô Theorem establishes global injectivity of maps defined over rectangular regions provided the Jacobian matrix is a P-matrix. We provide a purely geometric generalization of this result in the plane by showing that if the image of each edge of the rectangular domain is realized as a graph of a function over the appropriate axis, then the map is … …Journal of Mathematics and Statistics, Vol. 14, Issue 1 · 30 May 2018 · 7,561 accessesView PDFCite
Research ArticleOpen accessIn the abstractSustainable Energy for Aerospace VesselsRelly Victoria Petrescu, Raffaella Aversa, Bilal Akash et al.The advances in solar technology and electric propulsion now offer the promise of new, very capable space transport systems that will allow us to effectively explore the solar system. NASA has developed many concepts of space-powered spacecraft with power levels ranging from tens to hundreds of kilowatts for robotic and asteroid-driven missions and Mars. This paper describes two electrical/chemical propulsion … …Journal of Aircraft and Spacecraft Technology, Vol. 1, Issue 4 · 4 Nov 2017 · 8,019 accessesView PDFCite