Magnetohydrodynamics and Radiation Effects on the Flow due to Moving Vertical Porous Plate with Variable TemperatureProceedings of the National Academy of Sciences, India Section A: Physical Sciences - Tập 83 - Trang 327-331 - 2013
B. P. Garg
The combined effects of magnetohydrodynamics and thermal radiations on unsteady flow of an electrically conducting fluid past an impulsively started infinite vertical porous plate with variable temperature is investigated. A magnetic field of uniform strength is applied along an axis perpendicular to the plate. The plate temperature is raised linearly with time. An exact solution is obtained by La...... hiện toàn bộ
Numerical Simulation of Van der Pol Equation Using Multiple Scales Modified Lindstedt–Poincare MethodProceedings of the National Academy of Sciences, India Section A: Physical Sciences - Tập 91 - Trang 55-65 - 2020
Manoj Kumar, Parul Varshney
In this paper, an efficient perturbation algorithm combining the method of Multiple Scales and Modified Lindstedt–Poincare Techniques is proposed to solve the equation of Van der Pol oscillator with very strong nonlinearity. This algorithm combines the advantages of both methods. Solution of Van der Pol equation by the Multiple Scales Modified Lindstedt–Poincare (MSMLP) method is compared with the...... hiện toàn bộ
ZnS Nanoparticle Catalysed Four Component Syntheses of Novel Spiropolyhydroquinoline Derivatives in Aqueous Medium Under Ultrasonic IrradiationProceedings of the National Academy of Sciences, India Section A: Physical Sciences - Tập 85 - Trang 19-27 - 2014
Anshu Dandia, Ruby Singh, Shyam L. Gupta, Kuldeep S. Rathore
An environmental friendly, one pot, four components ZnS nanoparticles (NPs) catalyzed synthesis of biologically important spiropolyhydroquinoline derivatives in water under ultrasonic irradiation is described. The four component reaction of substituted cyclic ketones, 5,5-dimethyl-1,3-cyclohexanedione, meldrum’s acid, and amines/ammonium acetate in which formation of multiple carbon–carbon bonds o...... hiện toàn bộ