Effect of Ortho-Methyl Group on Adsorption Study of DCIC-GAC Sample for Phenolic Waste
N. B. SELUKAR* and S. M. WAGH**
Abstract: Trace organic compounds like phenolic compounds are frequently found in surface and waste water. Phenol have been classified as priority pollutants because of their multiple toxic effects even at very low concentration. Activated carbon adsorption is one of the well-established methods for removal of trace organic compounds. This method is widely used due to its simplicity, effectiveness, low space requirement and nuisance free operation. Granular activated carbon (GAC) of DCIC brand name is selected for phenolic waste treatment and a comparative/relative study of adsorption effect of phenol derivative by citing an example of O-cresol is presented in this research paper.
Key words : Adsorbent, GAC, Adsorbate, Phenol, O-cresol.

Artificial neural network for predicting kerf width in oxygen assisted CO2 laser cutting of mild steel
B. J. Ranganath* and K.J. Muralidhara**
Abstract: The interaction between the cutting tool and work material during
machining affects the characteristics of the machined surface. The controlling factor in laser machining is the heat generated by the laser beam interaction with the material. This will control the characteristics of the machined surface. The present paper deals with the factors such as laser power, assist gas pressure and cutting speed on the material removal rate. Artificial neural network, which is a very powerful optimization and non-linear approximation tool, is used to model the laser cutting system and predict the variation of kerf width with laser power, assist gas pressure and cutting speed.
Key words: Scanning electron microscope (SEM ), Material removal rate (MRR), Artificial neural network(ANN), Back propagation(BP).

Comparative effectiveness of cypermetrin and Zanthozylum zanthoxyloides (LAM) for the control of the cowpea foliage pest, Ootheca mutabilis (sahlberg)
R.F. Ogunleye
Abstract:Experiments were carried out to compare the effectiveness of Cypermethrin (a synthetic insecticide ) and Zanthozylum zanthoxyloides (Lam) (a botanical)for the control of the Cowpea foliage beetle Ootheca mutabilis(Sahlberg). The efficacy of the above materials was tested on the number of O mutabilis and percentage defoliation of cowpea plants. The results showed that all the concentrations of Zanthozylum used are capable of effecting a significantly lower insect number when compared with the control. The highest concentration of Zanthozylum used was found to compared favorably well with Cypermethrin in terms of the number of Ootheca and the percentage defoliation of cowpea. There were however no significantly difference in the yield of cowpea treated with all the treatments and the control.
Key words: Cypermethrin, Zanthozylum,Cowpea,Ootheca.

A study of electroluminescent materials and their reliability attributes under their applications
Ravindra Sharma1, G.P. Chhalotra2, S.K. Tiwary3 and Neena Chhalotra4
Abstract:Electroluminescent materials have several applications in Electrical and Electronic Engineering. It is essential to collect information on these materials and devices: thin film, single crystal and semiconductors diodes. A general study of Electroluminescent materials is made to find their reliability and applicability. A list of references is collected to review them and analysis is made on them on the ground of theoretical models of material parameters. The merit of such devices is that they can work on 2V supply at a current of 1 AMP/cm. The life may be equal to a fluorescent tube light of the order of 1000 hours. Large number of statements and experiment results are collected to verify them in the fuzzy space and their fuzzy grades of truth are represented. The failure rates are estimated. The risk, hazard, danger, calamity or disaster may be found in the complementary space of the reliability. This study is made in nine tables forming fuzzy sets and their complementary fuzzy set to discuss the union and intersection and fuzziness in the devices. The devices are not reliable and have a short life with a great hazard and danger due to light emitting systems.
Key words : Fuzzy grades of truteh, Fuzzy Cardinality, Failure rate, Reliability, Mean Time between Failure Availability.

Urea and thiourea Jordanian Modified Kaolinite as Adsorbent of Phenolics in Aqueous Solution
Mahmmuod Sunjug, Salem M. Musleh*, Maha Tutanji and Ghazi Derwish
Abstract:Chemical modification of Jordanian kaolinite using urea and thiourea were studied. The modified minerals were characterized by XFF, XRD and FTIR spectroscopy. The surface areas were estimated using methylene blue adsorption method. Experiments were carried out to study the affect of modification on the removal of phenolics from aqueous medium. The results show that urea intercalate directly with kaolinite. While thiourea adsorbed on the external surface of the kaolinite.The removal of phenols from aqueous solution by modified kaolinite seems to be more affective than the unmodified samples. This reflects the extent and type of intercalation.
Key words : Kaolinite, Adsorption, urea, Thiourea and phenols.

Comparative Broughtouts with Wavelength Division Multiplexing Network for Different Sources
Manoj Duhan and #Parvinder Singh
Abstract:Optical wavelengths division multiplexing offers several unique features that can be exploited to advantage in optical networks.

Electron-electron interactions and the electrical resistivity of copper at low temperatures
O.N. Awasthi1 and V.K. Pundhir2
Abstract: - The low temperature electrical resistivity in copper has been re-examined keeping in view the recent technological developments. We have studied the electrical resistivity of copper at very low temperatures-below 2K. The low -temperature electrical resistivity of copper has been analyzed by different authors in terms of electron-phonon and electron-electron interaction processes. It is observed that theoretical resistivity of copper at low temperatures contains a T2 term. We evaluated the T2 term in terms of electron-electron interaction processes. The contribution of this T2 term due to the electron-electron umklapp scattering processes in the electrical resistivity of copper at low temperatures has been evaluated using a simplified spherical Fermi surface model with isotropic transition probability. Our values of the electrical resistivity so obtained compare fairly well with the experimental results.
Key words : umklapp scattering, electron-electron interaction, electrical resistivity.

Charged particles (e±) excitation of Hydrogen atom
A. K. VERMA and S. SAXENA*
Abstract: - We apply the close coupling approximation for positron (electron) impact
excitation of HYDROGEN atom. The differential scattering cross section (DCS), integral cross section (ICS) and collision strength (W) have been computed. The calculated values are compared with other theoretical calculation (S-model calculation, 33-state calculation and 24-pseudostate model calculation) and experimental data (wherever available). These cross sections are in good agreement with
experimental result. More calculations are still in progress and may be seen in near future publications.

MT index during substorms - a case study
P. R. PRINCE and G. RENUKA*
Abstract: - Magnetotail (MT) index is computed for a single magnetospheric substorm and its relationship with the instantaneous magnetospheric configuration is analysed. A strong association between the index and the magnetic field inclination was established during the growth phase of the substorm. MT did not reflect the field orientations at disturbed times of substorm expansion and recovery phases.

Variation of Dielectric Constant and Emissivity of soil with temperature
G.P. Shrivastava* J. P. Shukla+ and Manisha Gupta+
Abstract: - Dielectric constant of soil varies with the moisture content present in the soil and also with the variation in temperature. Natural objects, such as soil at absolute temperature are capable of emission and absorption. The emitted radiation from the soil depends on its dielectric constant, surface roughness, physical temperature and angle of observation. The emissivity of soil also varies with the moisture content. Values of dielectric constant would help in calculating the emissivity and also in development of active and passive remote sensing sensors. Characteristics of soil at sub-zero temperature change and create a frost in the soil. The occurrence of frost in the ground depends on large number of interrelations between air temperature, soil type, moisture content, vegetation cover, snow and other factors. Dielectric measurements have been carried out for dry and wet soil. The dielectric constant has been found to increase with moisture content and temperature. At sub zero temperature, some ice particles have been observed at the surface of the soil sample. Emissivity can be evaluated with the help of dielectric constant for the dry and wet soil.
Key words : soil; emissivity; dielectric constant

Two loop b functions and estimation of unification mass
T. Vasanta Rao
Abstract: - We predict the values of electroweak mixing angle and unification
mass for the E6 GUT group by using Two loop analysis. Two loop b functions are estimated.

Synthesis and characterization of AlPO4-31 in a mixed template system
N. VENKATATHRI*
Abstract: - The microporous crystalline aluminophosphate designated AlPO4-31 has been synthesized as a pure phase in a mixed template system. This synthesis of AlPO4-31 avoids the previously reported need for seed crystals to obtain a pure AlPO4-31 phase.

Monthly rainfall forecasting using Harmonic Analysis
M. IMMACULATE MARY1, K. SENTHAMARAI KANNAN2 and C. SUYAMBULINGOM3
Abstract: - An attempt is made to predict rainfall using Fourier series for the estimation of monthly rainfall forecast based on the monthly average rainfall computed for 56 years from 1945 to 2000 in the south end of Tamilnadu. Fourier series was developed by taking different harmonics: The results obtained with the eighth harmonic gave the minimum non-significant chi-square value with the observed values.
Key words: Fourier series, Harmonic analysis, Rainfall forecasting.

Overtaking disturbances and rotating spherical shock wave in uniform medium
R.P. YADAV, ANIL KUMAR, ANSHU RANI and AKHILESH KUMAR
Abstract: - Flow variables behind the spherical shock propagating in rotating
medium has been investigated for two cases, viz (1) when shock waves are strong and (ii) when they are weak. Analytical relations for shock velocity and shock strength have been obtained by CCW method. The effect of overtaking disturbances on CCW shock is included inview of Yadav paper9. Medium in supposed to be uniform, though it is rotating. The results obtaind here are compared with though obtained elsewhere.

Determination of metal-ligand stability constants at 0.1 M ionic strength pH Metrically
Pratibha B. Agrawal
Abstract: - pK values of 3-[3'-(2"-hydroxy-5"-methyl aryl) pyrazol-5'-yl]-5-thiazolo
[2,3-C]-S-triazol-5 (6H) one. [HMAPTST] in 70% ethanol-water mixtures and log Kvalues of transition metals (Co, Ni, Cu) chelates with HMAPTST has been investigated pH metrically. It showed the formation of 1:1 and 1:2 complexes in the pH range 2.5 to 5.5.

Stability constant of Palladium chelates of Hydroxytriazenes
V.K. Swami
Abstract: - The effect of substituting - CH3, - OCH3, and - C1 groups in the ortho or the para position in the benzene ring of 3-hydroxy - 3-methyl, 3 - ethyl and
3- propyl-1-phenyltriazene upon the stabilities of palladium chelates of substituted hydroxytriazene has been discussed. An attempt has been made to correlate the PKa values of ligand with the first step and overall stability constants of palladium chelates formed by them.

Spectrophotometric measurements of the metal-ligand stability constants and confirmation of complex formation at 27±0.1oC
Pratibha B. Agrawal
Abstract: - Spectrophotometric investigation on Co(II)-complexes with substituted thiadiazoles {2-[3'-(2"-hydroxy-5"-methyl aryl) pyrazol-5'-yl]-5-amino-1,3,4-thiadiazoles [HMAPAT], 2-[3'-(2"-hydroxy-5"-methyl aryl) pyrazol-5'-yl]-5-mercapto-1,3,4-thiadiazole. [HMAPAT]} has shown 1:1 and 1:2 complex
formation. The complex formations are confirmed using isobestic point method and Job's variation method at 0,1 M ionic strength and temperature 27±0.1oC spectrophotometrically. The result obtained of stability constants are in good agreement.

Motion of strong converging shock waves in uniform medium
R.K. ANAND
Abstract: - Chester - Chisnell - Whitham method has been used to investigate the motion of strong converging shock waves in an ideal gas. The analytical expressions for flow variables immediately behind the shock has been obtained. It is found that the plane shock wave moves with a constant shock strength.
Key words : Converging shock; uniform medium.