Volume-3 Issue-12

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Volume-3 Issue-12

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S. No

Volume-3 Issue-12, November 2015, ISSN: 2319–6386 (Online)
Published By: Blue Eyes Intelligence Engineering & Sciences Publication Pvt. Ltd. 

Page No.



Rakesh Kumar Singh, Amarendra Narayan and Dolly Sinha

Paper Title:

Low Temperature Preparation and Effect of Pr3+, La3+, Sm3+ and Gd3+ Substitution on Structural, Magnetic and Dielectric, Studies of Ni0.5Zn0.5Fe2O4 Ferrite Nanoparticles

Abstract: Ni0.5Zn0.5Fe1.97R0.03O4 Nanoparticles; R= Pr, Sm, La and Gd, were synthesized using Chemical based Citrate Precursor method, annealed at low temperature 450oC for 2hr. X-ray diffraction (XRD) tool was used for estimation of average particle size and phase analysis. The average particle size was found to be 25nm, 33nm, 31nm, 22nm and 13 nm respectively. Room temperature magnetic measurement was done by vibrating sample magnetometer (VSM). The magnetization values observed are 50.692 emu/g, 43.781 emu/g, 47.875 emu/g, 43.335 emu/g and 43.518 emu/g respectively. The dielectric properties for all the samples were investigated at room temperature as a function of frequency while impedance was measured as a function of temperature. Ni0.5Zn0.5Fe1.97Sm0.03O4 nanoparticles show a dielectric behavior appreciably different from Ni0.5Zn0.5Fe1.97Gd0.03O4, Ni0.5Zn0.5Fe1.97Pr0.07O4, and Ni0.5Zn0.5Fe1.97La0.03O4  nanoparticles.

Ni0.5Zn0.5Fe1.97R0.03O4(R=Pr,La,Gd,Sm) Nanoparticles, Citrate Method,  Magnetic and Dielectric properties.


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A. A. Elsayed, N. Amer

Paper Title:

Experimental Analysis of Centerally Openned Two-Way Slabs Strengthened with Carbon Fiber Laminates

Abstract: This study is an experimental investigation of the behavior of two-way simply supported RC flat slabs with centered circular, rectangular, and square openings. Four models were tested to failure, consisting of a reference model without opening, and three models with an opening and Carbon Fiber Reinforced Polymer (CFRP) laminates applied to the tension face of the models. The results revealed that externally bonded CFRP laminates significantly increased both the overall stiffness and flexural capacity of the models provided with an opening. CFRP anchoring method can further increase the performance of the strengthening scheme used. Experimental load-deflection curves and failure modes are discussed.

Reinforced concrete; centered opening slab strengthening with Carbon Fiber Laminates; experimental analysis of two way slabs.


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K. S. Shashi Shekar, S. George Milton, Sameer Kulkarni

Paper Title:

Study of Natural Convection Using Rectangular Finned Heat Sinks with Base and Fins in Vertical Orientation

Abstract: Natural convection heat transfer can be enhanced by using heat sink. Experiments will be carried out to investigate the heat transfer in vertical heat sinks in natural convection with considering geometrical similarity approach with constant  S/H (fin spacingto fin height) ratio of the fins and even a correlation is obtained between Nusselt number and Rayleigh number. Using this correlation, size of the heat sink can be obtained for various heat loads by interpolation.

Natural, Nusselt, (fin spacingto fin height), S/H, Correlation, Transfer.