Papers

^*1Geology andMineral Exploration Groupof Baku State University, Azerbaijan Repulic Baku Z. Khalilov str. 23

²Karaj, Hesarak Town Science faculty, Geology Department Tarbiat Moallem University of Tehran Iran

Email:-mehdisafai_2000@yahoo.com

The best part of Kaolin and fireproof clay ore deposits of Azerbaijan Republic have been located in two regions of Lesser Caucasus: one around the Lok-Garabagh axis and the other in techtono-magmatic zone of Nakhjevan. From the most important deposits, the Chardakhli, Gutal, Chodardagh, etc. can be mentioned, located in Shekmir uplift. The XRD analyses results indicate that the most important clay minerals of these deposits include kaolinite, montmorillonite, dikkite, illite, pyrophillite and halloysite. Kaolinite is the most abundant and essential mineral in such ore deposits. Chemical combination of the deposits averagely includes: 20-40 % Al₂O₃, 49-78 % SiO₂ and less than 1.5 % Fe₂O₃. There is a negative correlation between the SiO₂ and Al₂O₃ values; that is, the ore deposits containing higher contents of SiO₂ contain lesser amounts of Al₂O₃. Kaolin and fireproof clay ore deposits of Azerbaijan Republic have been formed as a result of hydrothermal alteration process, low temperature hydrothermal-metasomatic alteration of intermediate to acidic combination igneous rocks, under the influence of acidic and sulphated hydrothermal fluids resulting from sub- volcanic phase activities after the acidic magma volcanism.

^1,2,3Department of Physics Govt PG College Kotdwar Pauri Garhwal Uttarakhand India

In the present paper effect of overtaking disturbances on the freely propagation of strong hydromagnetic cylindrical shock waves through rotating gas is studied by a technique developed by Yadav¹⁶. Assuming an initial density at the axis of symmetry, the analytical relation for flow variables modified by overtaking disturbances are obtained. The variation of flow variable with (i) Propagation distances (ii) Angular velocity  and (iii) Magnetic field are obtained. The results obtained here are also compared with those for a freely propagating shock.

¹Department of physics PN Autonomous College , Khurda (India)

²Department of physics Nayagarh Autonomous college Nayagarh (India)

³Plot No193 ,Jayadev Vihar Bhubneswar-13 (India)

 Heat and mass transfer in the oscillatory hydromagnetic free convective flow of a visco-elastic fluid past an infinite vertical porous plate with constant suction and heat dissipation has been studied. Constitutive equations of the problem have been developed and solutions are arrived at following small parameter perturbation technique. The effects of various fluid parameters like non-Newtonian parameter R_c, Grashof number G, modified Grashof number G_c, Eckert number E and magnetic parameter M on the mean and transient velocity field have been studied with the help of graphs. Similarly, the effects of Prandtl number P alongwith the other parameters have been exhibited through graphs. The effect of Schmidt number S_c on the mean concentration has been shown by the graph. The values of skin-frictions, rates of heat transfer and concentration gradient have been entered in the tables with the variations of the fluid parameters. It is observed that the magnetic field decelerates the flow of the visco-elastic fluid under consideration.

 Reader, Civil Engg .Department , JEC Jabalpur Gokalpur Jabalpur Pin 482011

MEStudent (EnvironmentEngg) Civil engg Department JEC Jabalpur (India)

Lecturer Civil Engg .Department , JEC Jabalpur Gokalpur Jabalpur Pin 482011

Email ID-rkvgecjbp@rediffmail.com

: Fluoride is a major environmental problem in many regions of the world In India today million of the people are affected by fluorides, causes of which are consumption of high quantity of fluoride. Various technologies are being used to remove fluoride from water but still the problem has not been solved out. In this paper, a broad overview of available technologies for fluoride removal has been presented . It has been concluded each technology has some limitation and selection of treatment process should be site specific as per local needs and prevailing conditions of each technology which can serve the purpose in diverse condition.

¹Department of Engineering Mathematics LNCT ,Bhopal (India)

² Department of Mathematical Sciences &computer Application Bundelkhand University Jhansi (India)

Email sumit _samy83@rediffmail.com

In this paper an EOQ inventory model is developed in which inventory is depleted not only by demand, but also by deterioration. The Weibull distribution, which is capable of representing constant, increasing and decreasing rates of deterioration, is used to represent the distribution of the time to deterioration. Hence, we drive an EOQ model for inventory of item that deteriorates at a generalized Weibull distributed rate, assuming the demand rate with a power function of time. Finally a numerical example is provided to assess the solution procedure for the inventory model

¹Research Scholar , Civil Engg Department Sardar Vallabhbhai National Institute of Technology,Surat Gujrat,395.007(India)

²Prof &Head , Civil Engg Department,  Sardar Vallabhbhai National Institute of Technology,Surat Gujrat-395.007 (india)

The friction factor of an open channel flow is generally affected by the characteristics of the fluid, flow, geometry of the channel and the characteristics of the channel boundary. So, here the attempt has been made to compute the friction factor following the different methods and an approach based on the field data of 15 years of Tapi River for monsoon season and studies the variation of friction factor with Shear velocity Reynolds number. The mathematical model to predict the friction factor for the Tapi River at Savkheda Gauging station has been developed by using the average value of the friction factor obtained by various methods based on various approaches and the multiple regression analysis. The multiple regression analysis has been carried out by using the non-linear curve fitter of the origin 7.5 software. The mathematical model has been developed relating the Shear velocity Reynolds number with the friction factor.

 Faculty of Science , K N Govt  College Gyanpur  S R N Bhadohi (India)

Measurement of dielectric constant (K^') and loss (K^") of light rare-earth nickelates of the type RNiO₃ with R = La, Ce, Pr, Ne, Sm and Eu have been reported in temperature range 300-1200 K. All the materials have been prepared in the laboratory by solid state reaction technique and characterised by XRD. Studied materials have high value of K^' and low value of K^" at lower temperature. However, at higher temperature increase becomes much faster and is due to space charge effect of thermally generated charge carriers. Temperature T₁ is different for different materials.

¹Department of physics and Electronics Dr R M L Avadh University Faizabad U P (India) 

² Amity Schools of Engineering & Technology , Amity University  Uttar Pradesh ,Lucknow Campus  UP (India)

In order to develop good analog circuits, a basic understanding of the noise analysis is required. In this paper, we present a noise model for class AB CMOS current conveyor and show how the model can be used to evaluate the noise in the current conveyor. Finally, to check the validity of the proposed model all the theoretical results have been compared with simulation ones. For the thermal noise, comparison shows that the theoretical results are in excellent agreement with the simulation, being the error between 4 and 5%. Also for the flicker noise, comparison between theoretical and simulated results is presented. Again the difference between them is not high, being the error of about 8%.

Department of Physics, R P G College  Jamuhai ,Jaunpur U P (India)

We have presented the analytic properties of spacetime manifold in the complex plane directly lead to the association of a temperature with a generic class of horizons.

^*Department of Applied Physics , Sri Venkateswara College of Engineering, Sriperumbudur-602.102 (india)

Department of Physics,Jaya Engineering College , Thiruninravur, chennai (India)

Department of Physics, Appolo Engineering College

Email-sambathk@svce.ac.in

Quantum mechanical calculation of energies, geometries and vibrational wave numbers of diazopropyne have been carried out by using density functional theory (DFT/B3LYP) method with 6.311++G (d,p) cc-pvdz, Aug-cc-pvdz as basis set. The optimized geometrical parameters obtained by DFT calculations are found to be good agreement with experimental Xray data. The best level of theory in order to reproduce the experimental wave numbers is B3LYP method with the 6.311++G(d,p) basis set. The difference between the observed and scaled wave number values of most of the fundamentals is very small. A detail interpretation of the infrared and Raman spectra has also been reported. The entropy of the compound under study is also performed. Application of Redington's method in the solution of eleventh and fourth order problems involved in vibrational analysis of diazopropyne (C₃H₂N₂) molecules. General quadratic valence force field has been used to calculate the force constants and mean amplitudes of vibration are also calculated in the present work. The results are discussed.