Papers

^aDepartment of Mathematics, College of Engineering,Bhubaneswar-751024 (INDIA)
^bDepartment of Mathematics, B.R.M. International Institute of Technology, Bhubaneswar-751010 (INDIA)

Effect of Hall current on the unsteady free convection flow of a viscous incompressible and electrically conducting fluid in the presence of foreign gasses (such as H2, CO2, H2O, NH3) along a porous flat plate subject to a transpiration velocity inversely proportional to the square root of time is investigated in the presence of a uniform transverse magnetic field and internal heat absorption/generation. Further, the present study accounts for the 1st order chemical reaction affecting the flow characteristics. The governing equations are solved in closed form applying Hhn (x) function. The effects of pertinent parameters characterizing the flow field are discussed with the help of graphs and tables.

Department of Physics, D.A.V. College, Kanpur, U.P. (INDIA)
e-mail : am97@rediffmail.com vidyakantsrivastava@yahoo.in

We present the entropy of non-static spacetimes with horizons  and associate temperature 1  which satisfies 12
S  E where E as the source of gravitational acceleration ai as a integral of 12
a b. ab as T  Tg u u Hence, one may define the free energy F with  F U S.

1Department of Physics, TKM College of Arts and Science, Kollam, Kerala (INDIA)
2Department of Physics, Fatima Mata National College, Kollam, Kerala (INDIA)
3Department of Physics, University College, Trivandrum, Kerala (INDIA)

IR and Raman spectra of 3,5-dichlorosalicylic acid were recorded and analyzed. Using Gaussian03 set of quantum chemistry codes, the vibrational wavenumbers and corresponding vibrational assignments were examined theoretically. The results indicate that the SDD method is able to provide satisfactory results for predicting the vibrational wavenumbers. The predicted infrared intensities and Raman activities are reported.

**Faculty of Education, Ekiti State University, P. M. B. 5363, Ado-Ekiti (NIGERIA) *Institute of Education, Faculty of Education, Ekiti State University, P. M. B. 5363, Ado-Ekiti (NIGERIA) ***Ondo State University of Science and Technology, P. M. B. 353, Okitipupa, Ondo State (NIGERIA)

This study investigated the applicability of Flesch’s formula in assessing the readability of Basic Science textbooks in selected Junior Secondary Schools in Ekiti State, Nigeria. The study employed an applied research technique and generated data from the pages of each textbook used. The sample consisted of all the Basic Science textbooks used in Ekiti State Junior Secondary Schools. The data collected were analyzed using average sentence length, average syllable count, grade levels and the reading age of the books. The results revealed that STAN Basic Science Book 3 published by Science Teachers Association of Nigeria, Longman Basic Science Book 1 published by Longman Publishers (Nig) Plc, and Evans Basic Science Book 3 published by Evans Brothers (Nig) Ltd. were fairly difficult for the readers with readability grades higher than the target readers. The results also showed that the books contained long sentence length and polysyllabic words that needs to be re-visited. It is therefore recommended that long sentences and polysyllabic words of the books should be split into simpler components for easy comprehension.

Department of Physics, D.G. Vaishnav College, Chennai (INDIA)
Dr. B. Annadurai, Head of the Department, Department of Physics,
Associate Professor, Adithanar College, Tiruchendur (INDIA)
(email id:kothai.kasipandian@gmail.com)
Mobile 9842141612

Electrical conductivity (EC) study of different types of soil is an interesting factor. The available compounds dissolved in water breakdown into ions. In this riverbed soil EC variation study constitutes, Humus content, Base saturation, cat ion exchange and mineral composition. The spectral assignment of (FTIR) peaks revealed the presence of O-H bond, C-O bond, methyl group, chlorine etc. The analytical study of elements like Carbon, Silicon, and Oxygen present in the riverbed soil sample carried out by SEM-EDAX-SAIF, IIT Chennai. The presence of functional groups and mineral elements in the riverbed soil played a vital role for EC variation. The characteristics study of EC of soil cell will create a new source of energy which is Eco friendly and pollution free.

1Department of Physics, TKM College of Arts and Science, Kollam, Kerala (INDIA)
2Department of Physics, Fatima Mata National College, Kollam, Kerala (INDIA)
3Department of Physics, University College, Trivandrum, Kerala (INDIA)

IR and Raman spectra of Salicylohydrazide were recorded and analyzed. Using Gaussian03 set of quantum chemistry codes, the vibrational wavenumbers and corresponding vibrational assignments were examined theoretically. The results indicate that the SDD method is able to provide satisfactory results for predicting the vibrational wavenumbers. The predicted infrared intensities and Raman activities are reported.

Department of Mathematics, S. V. College, Aligarh U. P. (INDIA)

A solution of the problem to study the effect of heat source on unsteady MHD free convection flow of an incompressible, viscous, electrically conducting fluid through porous media past an infinite porous vertical non conducting moving plate in the presence of uniform transverse magnetic field and transpiration is investigated. This type of problem finds application in many technological and engineering fields such as rocket propulsion systems, space craft re- entry aerothermodynamics, cosmical flight aerodynamics, plasma physics, Glass production and furnace engineering. Velocity, temperature and concentration of the flow have been presented for various parameters. In this study velocity of fluid increases with the increase in Gm (Modified Grashof number), K (Porosity parameter) and S (Heat source parameter), but it decreases with the increase in M (Hartmann number).

Molecular Spectroscopy and Biophysics Lab
D N College, Meerut-250002 U.P. (INDIA)

The Fourier transform infrared (FT-IR) and FT-Raman spectra of 6-bromo-2-methylquinoline (6B2MQ) have been recorded in the range 4000-400 and 3500-100 cm-1, respectively. The experimental vibrational frequency was compared with the wavenumbers obtained theoretically by ab initio HF and DFT/B3LYP gradient calculations employing the standard 6-31+G (d, p) and high level 6-311++G (d, p) basis sets for optimised geometry of the compound. The complete vibrational assignment and analysis of the fundamental modes of the compounds were carried out using the experimental FT-IR and FT-Raman data, and quantum mechanical studies. The geometry and normal modes of vibration obtained from the HF and DFT methods are in good agreement with the experimental data.

Department of Mathematics, D. S. College, Aligarh, U. P. (INDIA)
*Department of Mathematics, S. V. College, Aligarh, U. P. (INDIA)

In this paper an attempt has been made to study the effect of Hall currents on the vorticity of flow of an elastico-viscous fluid with transverse magnetic field past an infinite horizontal plate for both the classes of impulsive as well as uniformly accelerated motion of the plate. The magnetic lines of force are assumed to be fixed relative to the plate. In this study vorticity increases with the increase in k (Elasticity Parameter) and m (Hall currents Parameter), but it decreases with the
increase in M (Magnetic Parameter).

School of Studies in Earth Science, Vikram University, Ujjain-456010 M.P. (INDIA)
Email: ashutodixit@gmail.com, singhkn_vikram@yahoo.com,

The ratios of di-benzo-thiophene to phenanthrene and pristane to phytane joined together suggests the easiest way to know the crude oil source rock depositional environments of the particular area. This type of studies signify identification of the source formation(s) in a basin thereby providing valuable guidance for further exploration of oil wells. The ability to interpret this information from the data analyzed of a crude oil is much valuable during drill stem test of the samples collected from exploratory wells which are characteristically drilled on structural heights, stratigraphically remote from the source formation(s). The ratio of these two compounds is usually interpreted to be an indicator of the oxicity of the environment of deposition3,4. Recent advances in organic geochemistry in combination with geological constraints lead us to suggest that the Pr/Ph ratio cannot be used as an indicator for oxygen levels. However, in hypersaline environments of deposition the rationale behind a low Pr/Ph ratio is easier to understand, and in these environments application of the Pr/Ph ratio can be expected to be successful.

In the present endeavor the ratio of pristane and phytane of Ankaleswar oilfield has been evaluated to know the relationship of other parameters. The Ankaleswar oilfield is one of the promising field of Gujarat state and contributing 10% of the total production of the Indian oilfields.