Coimbatore, India

PSG College of Technology
Coimbatore, India

PSG College of Technology is an autonomous, government aided, private engineering college in Coimbatore, India. It is affiliated to Anna University. The college offers a total of 48 full-time and part-time programs in Science, Engineering and Management at undergraduate and postgraduate levels. The college was founded in 1951 by Dr.G.R.Damodaran, who served as first Principal of the college. It is one of the many educational institutions nurtured by PSG & Sons Charities Trust. It is the first private engineering institution established in Tamil Nadu. The college is located in the same campus with the PSG Industrial Institute. It is the only college in India to have an industry attached to it. Wikipedia.

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PSG College of Technology | Date: 2014-11-19

Cleaning fluids and methods for cleaning microfluidic channels are disclosed. The cleaning fluid includes surfactant coated magnetic particles, and the cleaning fluid may be guided into, through and out of the channels by using a magnetic field.

Pai G.A.V.,PSG College of Technology
IEEE Transactions on Fuzzy Systems | Year: 2017

This paper discusses a hitherto unexplored problem of fuzzy portfolio optimization with its tripartite stages of portfolio optimization, market scenario forecasting, and portfolio rebalancing. The portfolio optimization phase, which determines the original portfolio to be invested in, deals with the multiobjectives of maximizing its diversification ratio and its expected portfolio return, subject to the nonlinear constraints of risk budgeting and other investor preferential constraints. The complex problem model necessarily depends on metaheuristics to arrive at the optimal portfolio. The market scenario forecasting phase, where the investor desires to generate future market scenarios to handle the uncertainty in the markets while attempting to rebalance the portfolio, adopts a strategically refined Monte Carlo simulation to generate close-to-real future market scenarios. The last stage of portfolio rebalancing, which is crucial to the investor, employs fuzzy decision theory based metaheuristics using Interval Type-2 fuzzy sets, to cleverly exploit the uncertainty modeled by the market scenarios generated, to arrive at the ultimate optimal rebalanced portfolio. In the absence of reported work for a complex problem of such a nature and scale, two metaheuristic strategies chosen from two different genres of evolutionary algorithms, viz., multiobjective differential evolution and multiobjective evolution strategy, have been strategically evolved to solve the multistaged problem, for comparison of results. The experimental studies have been undertaken over a high-risk portfolio of BSE 200 index (March 1999-March 2009, Bombay Stock Exchange, India). Extensive simulations including data envelopment analysis have been undertaken to analyze the performance and robustness of the solution strategies. © 1993-2012 IEEE.

Rathinamoorthy R.,PSG College of Technology | Thilagavathi G.,PSG College of Technology
International Journal of PharmTech Research | Year: 2014

Terminalia chebula Retz (combretaeae) is a medicinal plant widely distributed throughout India, Burma, and Srilanka. Many Indian plants have been used from time immemorial to treat various diseases and infections in traditional medicinal systems. Terminalia chebula is one of the most commonly used plants in traditional systems of medicine in Indian sub-continent. Terminalia chebula is called the 'King of Medicine' in Tibet and is always listed at the top of the list in Ayurvedic Materia Medica due to its extraordinary power of healing. This review attempts to summarize the various pharmacological and biochemical studies on Terminalia chebula, this gives a wide knowledge about the herb and their importance in personal healthcare and hygiene.

Balliah R.,PSG College of Technology | Sudhakar M.,PSG College of Technology
International Journal of PharmTech Research | Year: 2015

Recent studies indicate that in addition to necrosis and apoptosis also plays a vital role in the process of tissue damage after myocardial infarction, which has a pathological and therapeutically implications. However, limited effort has been made to correlate these effects to the active ingredients of the polyherbal (PH) extract. The present study was designed to elucidate the cytotoxic and antiproliferative activity against H9c2 cardiac cell line, were analysed the quantitative detection of caspase-3 activity during the early apoptotic process was evaluated by Fluorometric Immunosorbant Enzyme Assay (FIENA). Late stage of apoptosis was evaluated by DNA fragmentation. PH extract appear to contain components that inhibit the proliferation of H9c2cardiac cells. Expression of caspase-3 was induced by PH extract at 5g eq/L after 6 hr of treatment increases compared to the control. An increase in DNA fragmentation was also observed in the PH extract treatment. © 2015, Sphinx Knowledge House. All Right Reserved.

Rajasekaran S.,PSG College of Technology
International Journal of Mechanical Sciences | Year: 2013

The free bending vibration of rotating axially functionally graded (FG) Euler-Bernoulli tapered beams (ETB) with different boundary conditions are studied using Differential Transformation method (DTM) and differential quadrature element method of lowest order (DQEL). These two methods are capable of modeling any beam whose cross sectional area and moment of inertia vary along the beam. In order to verify the competency of these two methods, natural frequencies are obtained for problems by considering the effect of material non-homogeneity, taper ratio, rotating speed parameter, hub radius and tip mass. The results are tabulated and compared with the previous published results. © 2013 Elsevier Ltd.

Manoj Kumar P.,PSG College of Technology | Parthasarathy V.,PSG College of Technology
Energy | Year: 2013

Water management in an AB-PEMFC (air-breathing proton exchange membrane fuel cell) poses a big challenge due to its passive operation. The issue is addressed in a passive way by designing the fuel cell with low thermal conductivity materials. Use of low thermal conductivity materials for cell fabrication led to higher cell temperatures. The liquid water formation was delayed to high current densities due to increase in saturation pressure and higher buoyancy induced flow. Peak power density was increased by 36% and the limiting current density was increased by 37.5% when the cell was redesigned with low thermal conductivity materials. Fabricating the cells with low thermal conductivity materials can be very effective method of water management for air-breathing single PEM (proton exchange membrane) fuel cells and stacks of low capacity. © 2012 Elsevier Ltd.

Rajasekaran S.,PSG College of Technology
Meccanica | Year: 2014

Differential transformation method is used to obtain the shape functions for nodal variables of an arbitrarily non-uniform curved beam element including the effects of shear deformation considering axially functionally graded material. The proposed shape functions depend on the variations in cross-sectional area, moment of inertia, curvature and material properties along the axis of the curved beam element. The static and free vibration of axially functionally graded tapered curved beams including shear deformation and rotary inertia are studied through solving several examples. Numerical results are presented for circular, parabolic, catenary, elliptic and sinusoidal beams (both forms - prime and quadratic) with hinged-hinged, hinged-clamped and clamped-clamped and clamped-free end restraints. Three general taper types (depth taper, breadth taper and square taper) for rectangular cross section are studied. Out of plane vibration is studied and the lowest natural frequencies are calculated and compared with the published results. Out of plane buckling is investigated for circular beams due to radial load. © 2013 Springer Science+Business Media Dordrecht.

Rathinasamy A.,PSG College of Technology
Nonlinear Analysis: Real World Applications | Year: 2012

In this paper, a class of split-step θ-methods for solving stochastic age-dependent population equations with Markovian switching is constructed. The main aim of this paper is to investigate the convergence of the split-step θ-methods of stochastic age-dependent population equations with Markovian switching. It is proved that the split-step θ-methods converge to the analytical solutions of the equations under given conditions. An example is given for illustration. © 2011 Elsevier Ltd. All rights reserved.

The free vibration of axially functionally graded (FG) non-uniform beams with different boundary conditions is studied using Differential Transformation (DT) based Dynamic Stiffness approach. This method is capable of modeling any beam (Timoshenko or Euler, centrifugally stiffened or not) whose cross sectional area, moment of Inertia and material properties vary along the beam. The effectiveness of the method is confirmed by comparing the present results with existing closed form solutions and numerical results. In FG beams, flexural rigidity and mass density may take majority of functions including polynomials, trigonometric and exponential functions (converted to polynomial expressions). DT based Dynamic stiffness approach is proved to be a versatile and simple approach compared to many other methods already proposed. © Springer Science+Business Media 2012.

PSG College of Technology | Date: 2014-07-17

A portable plug-and-play intelligent system for monitoring and controlling process variations of a workpiece of a machine is provided. The portable plug-and-play intelligent system includes one or more sensors, a controller, a work piece, a plug & play modular fixture with a motor, a database, a comparison unit, and a control unit. The one or more sensors collect real-time data of the workpiece from the machine. The controller processes the real-time data collected from the one or more sensors. The database stores the processed real-time data. The comparison unit compares the real-time data of the workpiece with predefined specifications of the workpiece to check whether the real-time data is accurate or not. The control unit triggers the motor to allow the plug-and-play modular fixture to adjust the parameter variables of the machine to the predefined specifications of the workpiece when the real-time data is not accurate.

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