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Numerical solution of non-Newtonian fluids flow past an accelerated vertical infinite plate in the presence of free convection currents

Patel M., Timol M. G.

International Journal of Applied Mechanics and Engineering

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2013

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Vol. 18, no. 3

761--777

EN

A similarity analysis of non-Newtonian fluid flow past an accelerated vertical infinite plate in the presence of free convection current is carried out. A group theoretic generalized dimensional analysis is employed to achieve the governing non-linear ordinary differential equations in the most general form. Numerical solutions of these equations are given with the plot of their velocity profiles with the effects of Pr-Prandtl number and Gr-Grashof number.

2

Fatigue Detection Using Computer Vision

Patel M., Lal S., Kavanagh D., Rossiter P.

International Journal of Electronics and Telecommunications

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2010

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Vol. 56, No. 4

457-461

EN

Long duration driving is a significant cause of fatigue related accidents of cars, airplanes, trains and other means of transport. This paper presents a design of a detection system which can be used to detect fatigue in drivers. The system is based on computer vision with main focus on eye blink rate. We propose an algorithm for eye detection that is conducted through a process of extracting the face image from the video image followed by evaluating the eye region and then eventually detecting the iris of the eye using the binary image. The advantage of this system is that the algorithm works without any constraint of the background as the face is detected using a skin segmentation technique. The detection performance of this system was tested using video images which were recorded under laboratory conditions. The applicability of the system is discussed in light of fatigue detection for drivers.

3

Patel M., Timol M. G.

International Journal of Applied Mechanics and Engineering

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2010

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Vol. 15, no 4

1205-1214

EN

A steady three dimensional MHD free convection and mass transfer flow past a semi-infinite surface in the presence of heat generation has been studied numerically for non-Newtonian power law fluids. The governing partial differential equations are reduced to a system of an ordinary differential equation using similarity transformation.

4

Synthesis and Physicochemical Study of 3d Metal Coordination Polymers with Dinegative Tetradentate [NSNS] Schiff Base

Panchal P., Parekh H., Pansuriya P., Patel M.

Polish Journal of Chemistry

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2006

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Vol. 80, nr 6

989-992

5

Characterization and Antifungal Study of Genuine Oxovanadium (IV) Mixed-Ligand Complexes with Schiff Bases

Parekh H., Pansuriya P., Patel M.

Polish Journal of Chemistry

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2005

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Vol. 79 / nr 12

1843-1851

EN

New oxovanadium(IV) complexes [VO(L)(A)] (KHL = potassium salt of o-hydroxyacetophenoneglycine, A1 = 2,2'-bipyridylamine, A2 = bis(benzylidene)ethylenediamine, A3 = thiophene-o-carboxaldeneaniline, A4 = thiophene-o-carboxaldene-p-toluidine, A5 = bis(benzylidene)-1,8-diaminonaphthalene, A6 = bis(acetophenone)ethylenediamine) have been isolated and characterized by elemental analyses, infrared spectra, electronic spectra, magnetic measurement and thermogravimetric analyses. An octahedral geometry has been assigned to all the VO(IV) complexes. The antifungal activity of Schiff bases, oxovanadium(IV) complexes, vanadyl sulphate, control (DMSO) and fungicides (bavistin and emcarb) have been evaluated against A. niger, F. oxysporum and A. flavus, which show clear enhancement in the antifungal activity upon complexation with Schiff bases but moderate activity as compared to the standard fungicides bavistin and emcarb.