International Journal of Engineering & Mathematical Sciences
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  ISSN NUMBER
  (Print) 2319 - 4537
(Online) 2319 - 4545
  List of Volumes
IJEMS
Volume 1(2012)
 
 Issue: 1(January - June), 2012
Volume 2(2012)
 
 Issue: 1 (July - Dec), 2012
Volume 3(2013)
 
 Issue : 1(January - June), 2013
Volume 4(2013)
 
 Issue : 1 (July - Dec.) 2013
Volume 5(2014)
 
 Issue : 1 (January - June), 2014
Volume 6 (2014)
 
 Issue : 1 (July - Dec.) 2014
Volume 7 (2015)
 
 Issue : 1 (January - June), 2015
Volume 8 (2015)
 
 Issue : 1 (July - Dec.) 2015
Volume 9 (2016)
 
 Issue : 1 (January - June), 2016
Volume 10 (2016)
 
 Issue : 1 (July - Dec.) 2016
Volume 11 (2017)
 
 Issue : 1 (January - June), 2017
Volume 12 (2017)
 
 Issue : 1 (July - Dec.) 2017
Volume 13 (2018)
 
 Issue : 1 (January - June), 2018
Volume 14 (2018)
 
  Issue : 1 (July - Dec.) 2018
Volume 15 (2019)
 
 Issue : 1 (January - June), 2019
 
   International Journal of Engineering & Mathematical Sciences
IJEMS,Volume 3(2013), Issue : 1(January - June), 2013    Collapse all | Expand all
1. Torsional Deformation of a non-homogeneous Magnetostrictive Orthotropic Cylinder
Author : Surya Narain and Shriram
Keyword : Torsional deformation, Magnetostrictive orthotopic cylinder, Frequency equation

Volume:3,Issue:1,PP:1 - 10,Year:(2013)
The present paper investigates torsional deformation of a non-homogeneous magnetostrictive orthotropic cylinder under the action of magnetic field produced by constant longitudinal current density J0 and acted upon by a shearing stress at one of its ends. The non-homogeneity of the cylinder is due to the variable elastic constants Cij which vary in the form , (i, j = 1, 2, .........6) where and are constants. Lastly, shearing stress and displacement vector have been calculated and graphs have been plotted to see the effects of such variation.
2. Effects of Varying Injection Pressure on Ignition Delay characteristics of Biodiesel
Author : Mahir Hussain, Prof. K. Zaidi, S. Rehman
Keyword : Coconut oil, Butyl alcohol, Ignition delay, cylindrical combustion chamber

Volume:3,Issue:1,PP:11 - 17,Year:(2013)
With recent inflations in petroleum prices and uncertainties concerning petroleum availability, there is renewed interest in vegetable oil based fuels like “biodiesel” for Diesel engines. Various processes are employed to produce biodiesel from vegetable oils depending upon the suitability of the process. Present work used co-solvent blending technique to produce the biodiesel by mixing 80% coconut oil and 20%butyl alcohol. The objective of the study was to compare the ignition delay of biodiesel with that of pure diesel fuel for similar operating conditions. An attempt has been made to experimentally simulate the effect of ever increasing injection pressure on ignition characteristics of conical sprays of fuels impinging on hot surface in a cylindrical combustion chamber. An experimental set up was designed and developed for a maximum air pressure of 200 bar and a maximum temperature of 800°C with the emphasis on optical method for the measurement of ID. Hot surface temperature range chosen was 350°C to 450°C and ambient air pressure condition kept at 20 bar for all set of readings. The results here show that ID of pure diesel and biodiesel follows the similar trends for same operating parameters and with increase in injection pressure ID decreases.
3. Modelling Of Electromechanical Control of Cam less Internal Combustion Engine Valve Actuator
Author : J. L. Chukwuneke, C. H. Achebe, P. C. Okolie and O. E. Anisiji
Keyword : Internal Combustion Engine, Electromechanical Valve, Cam less, Variable Valve Timing, Control, Actuator, Armature

Volume:3,Issue:1,PP:18 - 38,Year:(2013)
This paper presents the modeling and control of internal combustion engine valve actuator mechanism, using variable valve actuation system, like electromechanical valve actuation system to flexibly control the engine valve timing and lift profile. In this paper, the prospects and possibilities of an electromechanical control of internal combustion engine valve to eliminate choking and backflow has been theoretically and technically analyzed. In principle, optimality in every engine condition can be attained by Cam less valve trains. Electromechanical valve actuators are very promising in this context. A mathematical model of the system is developed to evaluate the effect of each of the design parameters, starting from the modeling of a single stage pressure reducing valve, the concept of modeling a real three land three way solenoid valve actuator for the clutch system in the automatic transmission is presented and these were validated with data provided from experiments with the real valve actuator on a test bench. A simulator in a Mat Lab for an input-output model is developed and significant improvements in fuel economy, engine performance, efficiency, maximum torque and power, pollutant emissions were achieved. A position feedback closed-loop controller that reduced the valve landing velocity from 0.55m/s to 0.16m/s with consistent transition time of 3.42ms were designed in a Mat Lab simulink and implemented.
4. Digital libraries: Needs and Benefits
Author : Dr. Satinder Malik
Keyword : Digital libraries, Digitization, Components of Digital Library

Volume:3,Issue:1,PP:39 - 45,Year:(2013)
Digital libraries (DLS) provide access to digital Information collections. Information Content in DLs may include a combination of structured/Unstructured text/numeric data, Scanned images, graphics, audio and video recording etc. Digital librarians are required to select, acquire, organise, make accessible, and preserve digital collections.
5. Molecular Interaction of Glucose in Aqueous ethanol ultrasonically
Author : Nimisha Jain, Sadhvi Gautam, & Madhu Gautam
Keyword : Ultrasonic Velocity, Acoustic Parameters Binary Mixtures.

Volume:3,Issue:1,PP:46 - 49,Year:(2013)
Molecular interaction studies using ultrasonic technique in the binary liquid mixture of Glucose with aqueous ethano has been carried out at 303K, 308K and 313K using the measured values of ultrasonic velocity, density and viscosity acoustic parameters and their excess parameter’s the nature and strength of the interactions in these binary systems are discussed.
6. Internet Collaborative tools for libraries: Web 2.0, Library 2.0: Blogs, Wikis, and RSS Microblogging, Wikis, Social Bookmarking
Author : Dr. Satinder Malik
Keyword : Library 2.0: Blogs, Wikis, and RSS Microblogging, Wikis, Social Bookmarking

Volume:3,Issue:1,PP:50 - 57,Year: (2013)
The basic aim of present study is to highlights how much libraries have been exaggerated with the advent of Technology Web 2.0, Library 2.0: Blogs, Wikis, and RSS Microblogging, Wikis, Social Bookmarking with examples of how they can be used within the scope of the library
7. A Study on Bulk Queue Model for Mobile Communication System
Author : Dr. V. P. Agarwal & Umesh Sharma
Keyword : bulk queue model, Mobile Communication System

Volume: 3,Issue: 1,PP:58 - 62,Year: (2013)
Electronic databases, from phone to e-mails logs, currently provide detailed records of human communication patterns, offering novel avenues to map and explore the structure of social and communication networks. Here we examine a bulk queue model was developed for analyzing a multi programmed communication system. It can be used in conjunction with closed queuing models to study message queuing in a queues can be classified theoretically in two kinds Messages or transactions which are teleprocessing system. The model is based on an imbedded Markov chain analysis.
8. Solutions of Second-Order Partial Differential Equations in Two Independent Variables using Method of characteristics
Author : Boniface O. Kwach, A. W. Manyonge, D. O. Alambo, T. J. O. Aminer
Keyword : Canonical, Characteristics, Models, Partially differentiable

Volume: 3,Issue: 1,PP: 63 - 72,Year: (2013)
In this paper we have classified second order linear PDEs into three types, hyperbolic, parabolic and elliptic. Hyperbolic equations have two distinct families of (real) characteristic curves, parabolic equations have a single family of characteristic curves, and the elliptic equations have none. All the three types of equations can be reduced to canonical forms. Hyperbolic equations reduce to a form coinciding with the wave equation in the leading terms, the parabolic equations reduce to a form modeled by the heat equation, and the Laplace’s equation models the canonical form of elliptic equations. Thus, the wave, heat and Laplace’s equations serve as canonical models for all second order constant coefficient PDEs.
9. Unsteady MHD Free Convective Flow of Mircopolar Fluid past a Semi-Infinite Vertical Moving Porous Plate with thermal radiation
Author : K. K. Kaanodiya and Radhey Shyam
Keyword : Micropolar fluid, Radiation, MHD, heat and mass transfer

Volume:3,Issue:1,PP: 73 - 85,Year:(2013)
In this paper we investigate the effect of thermal radiation on the two-dimensional free convective flow of a micropolar fluid over a continuously moving porous vertical plate under the combined buoyancy has been studied under the action of transverse magnetic field taking into account the thermal radiation field. The Roseland approximation is used to describe radiative heat transfer in the limit of optically thick fluids. The dimensionless governing equations for this investigation are solved analytically using perturbation technique. The resulting velocity, micro rotation, temperature and concentration distributions are shown graphically for different values of parameters entering into the problem. The numerical of the local wall shear stress, wall couple stress, local heat and mass flux are show in tabular form.
10. Effects of Infrastructures on the Spread of Carrier Dependent Infectious Diseases: A Mathematical Model
Author : Vivek Kumar and Shikha Singh
Keyword : Carriers, Infrastructure, Stability, Lyapunov’s function.

Volume: 3,Issue: 1,PP: 86 - 92,Year: (2013)
In this paper, an SIS epidemic non-linear model with migration is proposed and analyzed to study the effect of infrastructures on the spread of carrier dependent infectious diseases. The model has been analyzed by using stability theory of differential equations and computer simulation. This analysis shows that as the cumulative density of infrastructures increases due to human population density, not only the density of carriers increases but the spread of carrier dependent infectious diseases also increases.
11. Comparative Acoustic Behaviour of Antimony Chloride, Iodide, Calcium Iodide in higher alcohols
Author : Dr. Mahendra Singh
Keyword : Ultrasonic interferometer viscosity (Ostwald viscometer), Antimony halides with n propanol and n-butanol

Volume:3,Issue:1,PP:93-97,Year:(2013)
The ultrasonic velocity, density and viscosity of Antimony chloride, calcium iodide and antimony Iodide in n-propanol and n-Butanol at Temp 32ºC ± 0.05 have been measured, the comparative acoustical and thermodynamic parameter i.e. isentropic compressibility specific a acoustic impedane molar sound velocity, free length, density, viscosity have been calculated. The variation of these parameters with respect to the concentration have been explained one the basis of solute-solvent interaction and structure forming tendency of the solute in the organic solvents. Keywords
12. Time Varying Flow of a Power Law Fluid through Porous Medium under an Exponential Decaying Pressure Gradient with Thermal Radiation
Author : Mukesh Chandra Shakya & Rajesh Johari
Keyword : time varying flow, thermal radiation, porous medium

Volume: 3,Issue: 1,PP: 98-106,Year: (2013)
Aim of present study to the effect of thermal radiation on time varying flow through porous medium of a viscous incompressible non-Newtonian power law fluid between two parallel horizontal porous plates is studied under an exponential decaying pressure gradient. A uniform suction and injection through the surface of the plates is applied. The two plates are kept at different but constant temperatures, while the viscous dissipation is taken into consideration. Numerical solutions for the governing nonlinear momentum and energy equations are obtained using finite difference approximations. The effect of the thermal radiation and porosity describing the non-Newtonian behavior and the velocity of suction and injection on both the velocity and temperature distributions as well as the dissipation terms is examined.
13. New Types of Fixed Point Theorem in a Complete Metric Space
Author : Diwari Lal
Keyword : fixed point theorem, Complete Metric Space.

Volume:3,Issue:1,PP:107-111,Year:(2013)
The aim of this paper is to obtain a fixed point theorem in the form of rational expression. In this paper, we extended the work of Bhardwaj [6] and then show that the results of Banach [1 ], Kannon [2], Reich [3], Chatterjee [4], Fisher[5] and Bhardwaj [6] are special cases of our theorem. Throughout this paper the complete metric space (X, d) is denoted by X.
14. Spectral and Acoustic Studies of Quinoline and THF at 35C & 40C Temperatures
Author : Shalini Pandey
Keyword : Ultrasonic velocity, density and viscosity

Volume:3,Issue:1,PP:112-117,Year:(2013)
Ultrasonic velocity, density and viscosity measurements of binary mixtures of Quinoline with THF at 35C and 40C are conducted atmospheric pressure. Some thermo acoustical parameters like isentropic compressibility, molar volume, available volume, intermolecular free length, acoustic impedance and shear’s relaxation time have been calculated from experimental measurements. The results have been used qualitatively to explain the molecular interaction between the components of these mixtures, the results are further supported by FT-IR spectra
15. Effect of Hall Current on MHD Free Convective Flow of a Visco-Elastic (Kuvshiniki Type) Dusty Gas through a Porous Medium with Heat Source/Sink
Author : Satya Pal Singh & Dharm Pal Singh
Keyword : Heat and mass transfer, MHD, free convective, porosity, dusty visco-elastic, hall current parameter.

Volume:3,Issue:1,PP:121-127,Year:(2013)
In this paper, the present problem is concerned with hall current on MHD free convective flow of a visco-elastic (kuvshiniki type) dusty gas through a porous medium induced by the motion of a semi infinite flat plate moving with velocity decreasing exponentially with time heat source/sink. The expressions for velocity distribution of the dusty gas, dust particles, temperature and concentration distribution are obtained. The effect of heat source parameters (S), visco-elastic parameter, magnetic parameter (M), hall current parameter (m1), permeability parameter (K1), Prandtl number (Pr) and Schmidt number (Sc) on velocity distribution of dusty gas, temperature and distribution are discussed graphically.
 
 
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