Vol. 4 & Issue 1 ; Section C : Physical Sciences

Date : Nov.2013 to Jan.2014

 

A Theoretical Study of Non-Fermi-Liquid Behavior and Quantum Cr

Suryawanshi Rajendra Vittal , Mirza Abbas Hussian and L. K. Mishra

  • Abstract

    Using the theoretical formalism of M.B. Maple etal (Physica B 2006) and W. Montfrooij etal (Phys. Rev B 2006), we have theoretically analyzed the non-Fermi-liquid compounds Sc1-xUxPd3, URuR2-xexSi2 and Ce(Ru1-xFex)2 Ge2. Using the empirical formulas and varying the critical exponent, we have evaluated its various parameters such as specific heat, magnetic susceptibility etc. of the non-Fermi –liquid compounds. Our theoretically evaluated results are in satisfactorily agreement with the experimental data and also with other theoretical workers.

A Theoretical Study of two Dimensional Liquid 4He and Evaluatio

Dinesh Kumar and Lalit Kumar Mishra

  • Abstract

    The ground state energy of two-dimensional liquid He4 was calculated as a function of densities using two potentials namely Lenard-Jones potential and Aziz potential. We have taken help of the theoretical formalism of Chung-In-Um etal (JLTP, 1997) in this evaluation On comparing our theoretically evaluated results with GFMC calculation, it was observed that results obtained in the case of Aziz potential is very close to GFMC calculation.

Peristaltic Transport of Couple Stress Fluids in A Uniform and

V. P. Rathod and Asha. S. K

  • Abstract

    The Problem of peristaltic transport of a couple stress fluids through porous media in a gap between coaxial tubes where the outer tube is non-uniform with sinusoidal wave travelling down its wall and the inner tube is rigid. The relation between the pressure gradient, friction force on the inner and outer tube are obtained in terms of couple stress parameter. The numerical solution of pressure gradient, outer and inner friction force and flow rate are shown graphically.

Expanding and Non-shearing Bianchi Type - III String Cosmologic

Sapna Shrimali, Varun Humad2 and Dhirendra Chhaje

  • Abstract

    We have investigated expanding and non-shearing locally rotationally symmetric Bianchi Type - III string cosmological models with Bulk Viscosity. To obtain a determinate model, an equation of state ρ = kλ is assumed. Some physical of the model are also discussed

An Evaluation of Energy per Particle, Specific Heat and Entropy

Shreevant Raman and Lalit Kumar Mishra

  • Abstract

    Using the theoretical formalism of F. Dalfavo etal (Rev. Mod. Phys, 1999), we have evaluated energy per particle, specific heat and entropy of trapped Bose gas. Results were compared with the results of ideal Bose gas as a function of (T/Tc0). We have also evaluated energy per particle using an interaction parameter η. For η =0.4, our theoretical results are in good agreement with the experimental data.

A Theoretical Study of Quasi-Two Dimensional Condensate (BEC) a

Shreevant Raman and Lalit Kumar Mishra

  • Abstract

    In this paper, we have studied the physical properties of quasi-two dimensional BEC condensate and using the theoretical formalism of G. Hechenblaikner etal( Phys. RevA71(2004)) evaluated the chemical potential of the condensate. In this evaluation, we have taken two model potentials namely hybrid Variational potential and Gaussian Variational potential. Our evaluated results for both potentials are very similar in magnitude and trends. Our theoretical results are in good agreement with the experimental data and also with other theoretical workers.

On Yoneda Lemma in the Category L-FCyc

Souriar Sebastian, Alexander Mendez & Divya Mary Daise.S

  • Abstract

    The authors have introduced the category L-FCyc whose objects are L-fuzzy subgroups of finite cyclic groups and morphisms are L-fuzzy homomorphisms,and discussed some properties of it. In this paper, we explain how the Yoneda Lemma in general category theory works in the fuzzy context by restating and verifying it in LFCyc.

A Theoretical Study on Shallow Donor Impurity in Triple Quantum

Tajendra Kaur, Ashok Kumar Sinha and L. K. Mishra

  • Abstract

    Using theoretical formalism of A. Large etal [Semicond. Sci. Technol. 2002], we have studied the shallow donor impurity in triple quantum well structures. Our theoretically evaluated result for intra-donor transition energy (cm-1) and intra-donor magneto-absorption coefficients (arb. U) are in good agreement with the experimental data.

Development of ZnO Nanoparticles for Clinical Applications

M.C. Raoa K. Ravindranadha and T. Rose Mary

  • Abstract

    Nanomaterials have a great many medical applications which are growing rapidly to lead the wide scale production and application of engineered nanoparticles. Extension of nano engineering to the formation of fibers, sheets and volume-filling materials such as gels, networks and scaffolds as well as other none medical products such as cosmetics, sunscreens and food products are increasing. However, extensive usage of them may cause unwanted damages and toxicity to the living cells due to the increased surface reactivity of nanoparticles. The properties of many conventional materials will be changed when they are in nanoparticle form. This is typically because nanoparticles have a greater surface area per weight than larger particles which make them to be more reactive to some other molecules. In recent years ZnO nanoparticles have been used in different industrial sectors such as medicine, cosmetic materia

A New method for solving Fully Fuzzy Linear System

Subramanian Radhakrishnan and Pandurangan Gajivaradhan

  • Abstract

    In this paper we intend to solve the fully fuzzy linear system of the form

    

      where  is a m x n fuzzy matrices consisting of arbitrary fuzzy numbers, the unknown vector is a vector consisting of n arbitrary fuzzy numbers and the constant   are vectors consisting of m arbitrary fuzzy numbers, by converting it into a crisp linear system and solving it by any one of the classical methods as well as QR decomposition method. The proposed method gives the non negative solution of fully fuzzy linear system.

Harmful Effects on Human Body Tissues Due to Electromagnetic Wa

Arvind Kumar, Vijay Kumar and P. P. Pathak

  • Abstract

    The medium frequency waves are used for amplitude modulation (AM) broadcasting in the frequency range 535 kHz – 1705 kHz. The broadcasting stations are situated in public living environment. In this manuscript the studies are taken for the health effects in general public due to electromagnetic radiation at frequency of 1566 kHz. The people who are living near the AM broadcasting antenna may affected by this electromagnetic energy. So the penetrated electric fields and specific absorption rate (SAR) are calculated inside human body tissues using their electrical conductivity. The penetrated electric fields and SAR inside the selected tissues are calculated at 100 m and 150 m distances from antenna and the calculated values inside tissues at various depths are compared with the given permissible limit by the international agencies such as international commission for non-ionizing radiation protection

CZTS Nanocrystals for New Generation Photovoltaic Devices

M. C. Raoa, K. Ravindranadha, T. Srikumara, G.V. Ramanab, Y. Hanumantha Raob and T. Rose Mary

  • Abstract

    Metal chalcogenide nonmaterial has interesting properties that differ from their bulk counterparts. These properties depend not only on the material of the nanoparticles but also on the size and shape of the particle as well. Spherical semiconducting metal chalcogenide nanoparticles have tunable band gaps that are dependent on the radius of the nanoparticles due to quantum confinement effects. Knowing that complex nanostructures can have advantages over simpler nanoparticles, the goal is to find simple ways to make complex nanostructures. The earth abundant chalcogenides of copper, zinc and tin make up an important class of materials toward creating low cost and sustainable thin film solar cells, with the properties of a direct band gap with a large absorption coefficient. Recently, earth abundant Cu2ZnSn(SeS)4 (CZTSeS) nanocrystals are being considered as ideal absorber materials for thin film solar cells bec

Improving Electrochemical Performance of Lithium-Ion Batteries

M. C. Rao

  • Abstract

    The performance of current energy conversion and storage technologies falls short of requirements for the efficient use of electrical energy in transportation, commercial and residential applications. Materials have always played a critical role in energy production, conversion and storage and today there are even greater challenges to overcome if materials are to meet these higher performance demands. Improvements in the capacity of modern lithium batteries continue to be made possible by enhanced electronic conductivities and ionic diffusivities in anode and cathode materials. Fundamentally, such improvements present a materials science and manufacturing challenge: cathodes in these battery cells are normally comprised of metal oxides of relatively low electronic conductivity and separator/electrolyte compositions must be tuned to readily admit ions, while simultaneously forming safe, impenetrable

Type-II Generalized Half-Logistic Distribution - An Economic Reliability Test Plan

K.Rosaiah,1R.R.L.Kantam and V.Rama Krishna

  • Abstract

    The type-II generalized half-logistic distribution is considered as a probability model for the lifetime of the product. A test plan to determine the termination time of the experiment for a given sample size, producer’s risk and termination number is constructed. The comparison of the present test plan over similar plans exists in the literature is established with respect to the experimental time.

Biometric identification of person using ECG signal

Nikita Verma and Manish Rana

  • Abstract

    Biomedical signals make it possible to offer secure and flexible authentication system. Biomedical signal are acquired by a sensor, transducer, electrode, and is converted to proportional voltage or current for processing or storage. ECG is traditionally acquired for clinical diagnosis of cardiac function but recently ECG signals are used in personal identification. Methodologies include preprocessing, feature extraction, classification. Pre-processing includes removal of noise from ECG signal. Feature extraction includes extracting various features from these ECG signals which can be further used for identification. Classification is the final step to compare extracted features with the one stored in data base.

The Inhibition Effect of Cosmetic Argan Oil toward Copper Corro

F. Mounir, S. El Issami, Lh. Bazzi, A. Chihab Eddine, M. Belkhaouda, L. Bammou, R. Salghi, O. Jbara and L. Bazzi<

  • Abstract

    The effect of addition of cosmetic argan oil (CAO) on the corrosion of copper in 2 M H3PO4 and NaCl 0.3 M has been studied by weight loss measurements, potentiodynamic polarisation and Electrochemical Impedance Spectroscopy (EIS) measurements. The inhibition efficiency was found to increase with inhibitor content to attain 98% for CAO at 7g/L. Inhibition efficiency E (%) obtained from the various methods is in good agreement. The temperature effect on the corrosion behaviour of copper in (2 M H3PO4+ 0.3 M NaCl) was studied by potentiodynamic technique in theb range from 298 to 323 K. The associated activation energy has been determined.

An Improved Iterative Method Based on Cubic Spline Functionsfor

Azizul Hasan, R.B.Srivastava, N.Ahmad

  • Abstract

    One new iterative method for solving nonlinear functions has been presented using a new quadrature rule based on cubic spline functions. This method has been found more efficient than Newton – Raphson method.

A Theoretical Estimation of Binding Energy of Hydrogenic Impuri

Tajinder Kaur, A. K. Sinha and L. K. Mishra

  • Abstract

    Using the theoretical formalism of E. Kasapoglu etal (Solid State Communication,2003), we have theoretically evaluated the variation of binding energy of the ground state for a donor at the centre of GaAs quantum well as a function of well width keeping title angle constant and also as a function of title angle keeping well width constant. We have taken four different magnetic fields in this evaluation. We observe that title angle is good tunable parameter providing a change on the impurity binding energy for small width. Our evaluated results are in good agreement with the experimental data and also with the other theoretical workers. This study will help to understand the experimental data of the donor impurities in GaAs quantum well under the applied external titled magnetic field.

Influence of Sodium Meta Vanadate on the Corrosion Resistance o

M.Pandiarajan, S.Rajendran, R.Joseph Rathish and R.Saravanan

  • Abstract

    The inhibition efficiency (IE) of sodium Meta vanadate -Zn2+system in controlling corrosion of mild steel immersed in Simulated Concrete Pore Solution SCPS prepared in well water has been evaluated by weight loss method.The formulation consisting of 100 ppm of NaVO3 and 50 ppm of Zn2+ provides 94% of IE. Polarization study confirms the formation of a protective film on the metal surface .The inhibitor system function as mixed type of inhibitor. AC impedance spectra revealed that a protective film is formed on the metal surface. The reactions are  diffusion controlled process.

Dynamics between Clear, Cloudy and All-Sky Conditions: Cloud Forcing Effects

Antero Ollila

  • Abstract

    The author has analyzed the dynamics of atmospheric changes between allsky, clear and cloudy sky conditions. The basis of analyses is the calculation of flux values at the balance states. The analyses depend essentially on the time constants of basic processes, which can be analyzed separately. Two time constants are based on the former research results, and three time constants have been developed and estimated in this study. The basic processes in dynamic analyses have been the very apid changes in cloudiness and cloud temperatures, the rapid change in upward atmospheric long wave radiation caused by solar insolation change, the slow change  n temperature of the land and sea, and the transient change in the atmosphere temperature. This transient atmospheric process has an essential role in explaining why the surface temperature increases when at the same time the cloud forcing decreases. The d

An Evaluation of Super Fluid Density, Quasi-Particle Contributi

Santosh Kumar, Amit Kumar, Navin Kumar and Lalit Kumar Mishra

  • Abstract

    We have studied the BCS- BEC cross over regime by evaluating the energy gap parameter and the chemical potential for the cross- over as a function of dimensional parameter. Our theoretical results indicate that cross-over occurs in the very small regions of the parameter. We have evaluated the ratio of super fluid density to the total density(ρs/ρ) as a function of (T/Tc) for three limits BCS, Pseudo gap and BEC. These results are quite useful in the study of dynamical properties of BCS-BEC crossover region at finite temperature

A Study of Anthropometric Somatotype of Mentally Challenged Chi

Shilpa Inchulkar and Reeta Venugopal

  • Abstract

    Purpose: This study focused on evaluation of somatotype characteristics of mentally challenged children in Chhattisgarh, India. Methods & Materials: Ex-post facto design was used. Purposive Sampling method was used to select 35 trainable and educable mentally challenged children (male) without any multiple disabilities from special schools for the mentally challenged children in Raipur, Chhattisgarh. The age of the children was between 14 - 16 years. Each subject was somatotyped by the Heath- Carter Anthropometric Method. Data were analyzed with mean, standard deviation.Majority of participants have predominantly mesomorphic endomorph characteristics.Mentally challenged children in Raipur, Chhattisgarh were mesomorphic endomorph in their somatotype characteristics.

On Lie Derivative and Affine Motion in a V -Recurrent * n F&nbs

M. S. Arora and S. B. Misra

  • Abstract

    E. T. Davies1 has considered the generalisation of the Lie-derivatives to Finsler space Fn and its application to the theory of subspaces. By considering an infinitesimal transformation H. Rund2 and K. Yano3 have defined the Lie-derivatives of an arbitrary vector X i (x, x&) and the symmetric connection parameter *i ( , ) jk G x x& .In this paper, we have studied the Lie-derivatives of covariant and contravariant vectors in a Finsler space equipped with semi-symmetric connection as has been introduced by Mehar and Patel4 and have generalised the results thus obtained for tensor fields of various orders. The Liederivatives of semi-symmetric connection parameter have been discussed and an attempt has been made to obtain the commutation formulae involving the Lie-derivatives.

Corrosion behavior of nickel-Chromium alloy in artificial sweat in presence of D-glucose

S.M. Lydia Christy

  • Abstract

    This paper deals with the corrosion behavior of metals in the presence of biological media such as sweat. Human sweat comes in contact with a number of consumer products. This results in a variety of undesirable effects such as corrosion and malfunction. The nature and strength of the passive film and the mechanism of its formation are explained based on detailed studies conducted under experimental conditions. Corrosion behaviour of three metals, namely, Aluminium, copper and nickel-chromium alloy in artificial sweat (the ISO standard ISO 3160-2) in presence of D-glucose has been studied by polarization study The study reveals that the decreasing order of corrosion resistance is Ni-Cr > copper > aluminium.

Nanomaterials and Its Application- A Review

R. P. Ugwekar,G. P. Lakhawat

  • Abstract

    In the field of technologies, nanotechnology plays a great role. Nanotechnology made our lives easier, faster, smarter, and very convenient in the field of pleasure. Nanotechnology is a very vast field in which the matter is of great concern in the nanometer scale. Nanotechnology in the simple language can be defined as the study of matter in around the size of 1-100 nm. These nanotechnologies that we see in our daily life are mainly comprised of the nanoparticles of various sizes under 100 nm and these nanoparticles refer to the nanomaterials and the nanobiomaterials which are of great use to the human kind. Many industries around the world are showing their interest presently to this field of nanotechnology and it provides an important transformation to that industry as well as to the human beings working there as its provides a great opportunity for the unemployed talented people to work under this tec

A Theoretical Study of Fermi-Bose Mixtures near Broad Interspecies Resonances

Puran Shaw, V. K. Verma and L. K. Mishra

  • Abstract

    Using the theoretical formalism of S. Mohammad (arXiv: 1003.3096v1 (2010)), we have theoretically studied Fermi-Bose mixtures near broad interspecies resonances. Using Variational method, we have evaluated energy of the molecule, WB as a function of scattering length [KFabf]-1 for different mass ratio, critical scattering length [KFa(1)]-1 as a function of (mB/mF), pair-breaking energy Δ in the unit of (εF R) and pair chemical potential μ(εF R) as a function of scattering length [KFabf]-1 for 40K- 87Rb.Our evaluated theoretical results are in good agreement with other theoretical workers.

Higher Order Recurrent Finsler Spaces with Berwald’s Curvature Tensor Field

Bindhyachal Misra, S. B. Misra, Kaushal Srivastava, R. B. Srivastava

  • Abstract

    In the present communication we have derived Bianchi and Veblen identities along with few more related results in a recurrent and generalised 3-recurrent Finsler space with Berwald’s curvature tensor field.

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