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A novel series of 4-aminoquinoline-purine hybrids were synthesized and assessed for their antiplasmodial activity against CQ-sensitive and CQ-resistant strains of P. falciparum. It was envisaged that linking of the 4-aminoquinoline pharmacophore (targeting heme-detoxification pathway of malarial parasite) with the purine functionality (targeting plasmodial HG(X)PRT enzyme) will produce a hybrid antiplasmodial...
Today non-linear loads are inevitably used in industrial, commercial and domestic facilities have risen to harmonic problems. Harmonics affect the loads connected at Point of Common Coupling (PCC). Shunt Active power Filter (SAPF) is implemented for harmonics elimination in the distribution system. The SAPF performance depends upon the controller adopted for SAPF. Recently by the inspiration of the...
In the recent trends the electrical grid is being interconnected with various types of non-conventional energy sources like solar, wind, etc. Some of the sources like wind turbine generators are vulnerable to grid side voltage sags and short circuits. This paper provides the new LVRT (Low Voltage Ride Through) solution for balanced and unbalanced grid faults in an electrical power system network....
Maintaining power system frequency at constant value is very important for the health of the power generating equipment and the utilization equipment at the customer end. The job of automatic frequency regulation is achieved by governing systems of individual turbine-generators and Automatic Generation Control (AGC) or Load frequency control (LFC) system of the power system. The main objective of...
The basic direct torque control has more torque, flux and current ripples in steady state, which results in acoustical noise and increased harmonic distortion. The standard space vector pulse width modulation (SVPWM) algorithm distributes the zero state time equally between the two possible zero voltage vectors. To reduce the complexity involved in the conventional space vector approach, the proposed...
Many structured peer-to-peer (P2P) systems have been proposed as distributed hash tables (DHTs) for fast and efficient lookup of queries. In this paper, we propose a novel technique for improving average lookup times in P2P systems by caching additional neighbor pointers based on peer access frequencies. In particular, we address the problem of each peer choosing the k best pointers to store (in addition...
One of the new approaches for capturing carbon dioxide from treated flue gases (post- combustion capture) is based on gas hydrate crystallization. The carbon dioxide content of the gas hydrate crystals is different than that of the flue gas. This provides the basis for the separation or capture of the CO2. Moreover, when a gas mixture of CO2 and H2 forms gas hydrates the CO2 which forms hydrate at...
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