Papers

Department of Geological Sciences, Gauhati University, Guwahati - 781014 (Assam) (INDIA)

The different types of lithofacies have been studied from Barail Group of rocks occurring in and around Sonapur, South Jaintia Hills District, Meghalaya.

The overall generalised litholog of the area has been constructed after detailed investigation. The lithofacies consists of Sm, Sh, St, Sr, Fl Fm etc. The lithofacies successions are characterised by the presence of a couple of fining upward sedimentation cycles.

The present study gives a picture of the distribution of various facies as well as the water level conditions throughout the area. A hypothetical sedimentation model constructed for the generalised sedimentary sequences suggest rapid sedimentation and high energy conditions for the basal-stratification, through cross-strata, rippled strata, finely laminated silts, muds etc. indicating deposition in the wanning stages of a flood.

Facies observations indicate that majority of the sequences towards the base may be a product of braided river condition. The abundance of massive and horizontally stratified sands suggest the presence of an upper flow regime. The laminated fine sands along with  muddy layers may also be interpreted as sediments filling abandoned chute channels. These chute channels are active only at the flood stage and these were the sediments deposited mainly from suspension mainly as overbank facies.

The sedimentary characteristics and presence of both wave and current formed structures like ripple-marks and current beddings and suggestive of intertidal sandflat origin, where bedload transport under tidal action dominated over slack water (suspension) depositions.

Department of Physics, University of Kashmir, Srinagar (INDIA)

In receiving mode when an antenna gets signal from space, like satellite , it is known that there is a very little back ground noise emanating from sky, compared to noise generated by the warn 300 Kelvin earth during terrestrial communication . It is true that most of the noise received by an antenna pointed at the sky is earth's noise arriving through feed spill, which can be reduced by increasing edge taper.

¹Department of Physics, Nehru Gram Bharti University, Kotwa, Dubawal, Allahabad (INDIA)
²Department of Physics, Ewing Christian College, Allahabad (INDIA)

Polytropes are self gravitating gaseous sphere that are very useful as crude approximation to more realistic stellar modal. In this paper we have demonstrated that the density/mass of the stars keeps on increasing from its surface to centre. Approximate analytic solutions to the equilibrium equations have been presented in phase planes such as (, ), Transformations connecting solutions in this phase plane have been obtained and discussed.

^aDepartment of Physics, A.P.S. University, Rewa-486003 (M.P.) (INDIA)
^bDepartment of Physics and Comp. Science, Govt. T.R.S. College, Rewa-486001 (M.P.) (INDIA)
E-mail: praveentrs@gmail.com

Cosmic ray intensity shows significant diurnal variation of day to day basis with wave trains of high amplitude anisotropic events (HDW) and low amplitude anisotropic events (LDW). Using the pressure corrected data of neutron monitor at Kiel (2.36 GV) for Solar cycles 22 & 23, harmonic analysis was performed to obtain harmonics. Trends were
removed by subtracting 24 hours running average from the hourly values. The events of high & low amplitude wave trains were sorted out, total 54 events was selected for solar cycle 22, and 63 events were selected for solar cycle 23. On the basis of geomagnetic disturbance index Ap group (0-5, 6-10, 11-14, 15-18,>19) events were again sorted out of different durations.

It is concluded that low diurnal amplitude wave train event of different durations does not exhibit any effect on geomagnetic disturbances, while high diurnal amplitude wave train event of all durations, equally, are effecting geomagnetic disturbances.

*SRM University, Kattankulathur, Chennai (INDIA)
**Department of Mathematics, St.Joseph's College of Engineering, Chennai (INDIA)
Email:-kum_msc_anna@hotmail.com 

Water quality is an important issue of relevance in the context of present times. The proposed model is designed to predict Water Quality Index (WQI) for pond (tank) in Kabaleeshwarar temple, Chennai. A Fuzzy Inference System (FIS) simplifies and speed up the computation of WQI as compared to the currently existing standards. In this paper, the proposed model is compared with Indian Water Quality Index (IWQI) and it is found that the designed model results in accurate prediction

¹Centre for Wind Energy Technology(C-WET), Chennai - 600 100, TN (INDIA) Under Ministry of New and Renewable Energy, Govt. of India
²Rajiv Gandhi Technical University, Bhopal, M.P. (INDIA)
³Maulana Azad National Institute of Technology, Bhopal, M.P. (INDIA)
Email:- katyal@cwet.res.in; ed@cwet.res.in

In the Indian context, if wind turbine installations have to exploit the estimated potential then the need of the hour is to utilize the complex terrains as most of the good windy sites in flat terrains have already been exhausted. The retrospective analysis of 25 years of wind speed was carried out using numerical weather prediction (NWP) model for a complex hilly terrain at Iddukki district of Kerala and the same was validated by onsite measurement using C-WET met mast for a period of one year with an objective to increase the accuracy of the model by reducing the bias. The data so obtained was used to arrive at the wind shear force which is the major governing parameter acting on the top of wind turbine towers. In this paper, various geometric configurations both for 73 m & 30m tall lattice type wind turbine towers were analyzed using STAAD PRO tool to arrive at the most optimal/least weight configuration by changing the base width and keeping the top width bare minimum and constant as per the requirements for housing the nacelle at the top, with in the limits of allowable blade deflections.

Department of Zoology, Magadh Mahila College, Patna University, Patna (INDIA)

The present research work deals with the evaluation of plasma phospholipids of a freshwater Clarias batrachus (Linn) with reference to age, sex and starvation. For the determination of fish age, the length of the fish was taken into consideration. The plasma phospholipid content was higher in male fishes than female fishes in all the age groups. The
plasma phospholipid content of male fishes remain slightly increased up to 60 days of starvation and then shows a gradual depletion from the 90th days of starvation and continues till last days of the experiment from the control value (93.2 mg/100 ml). However, in the female fishes, the plasma phospholipids show an increase in its level up to 90 days of starvation from the control value (94.75 mg/100 ml). The phospholipids level starts depleting from 105th days onward of starvation and continues depleting till the last days of the experiment. The depleted value recorded was 74.8 mg/100 ml

¹Department of Physics, TKM College of Arts and Science, Kollam, Kerala (INDIA)
²Department of Physics, Fatima Mata Natinal College, Kollam, Kerala (INDIA)
³Department of Physics, University College, Trivandrum, Kerala (INDIA)
⁴Department of Physics, St. Thomas's College, Thrissur, Kerala (INDIA)

IR and Raman spectra of 1-(2-aminoethyl)piperazine were recorded and analyzed. Using Gaussian03 set of quantum chemistry codes, the vibrational wavenumbers and corresponding vibrational assignments were examined theoretically at the HF and DFT levels. The  results indicate that the B3LYP method is able to provide satisfactory results for predicting vibrational wavenumbers. The predicted infrared intensities and Raman activities are reported.

Babulal Tarabai Inst. of Research and Tech. Sagar and TIT, Bhopal (INDIA)

In this paper the notions of strongly W-projective and strongly W-injective module dimension over commutative domain R are given. It is shown that over semi simple rings with W-dimension one, these modules are equivalent to W-injective modules. The W- projective dimension measures how for away a dimension is from being a priifer domain.

Deptt. of Physics Saifia P. G. College of Science and Education, Bhopal, 462001 (INDIA)

In the present paper, we have investigated the static properties of mixed ionic crystal ND4Cl1-xBrx using three-body potential model (TBPM) by the application of Vegard's law. The results for the mixed crystal counterparts are also in fair agreement with the pseudoexperimental data generated from the application of Vegard's law. The results are in good agreement with the experimental data. The results on compressibility, molecular force constant, infrared absorption frequencies and Debye temperature are probably presented for the first time for these mixed crystal counterparts.