Papers

¹Department of Mathematics, C. L. Jain (PG) College, Firozabad-283203 (India)
²Department of Physical Sciences, MGCG, Vishwavidyalaya, Chitrakoot-485780 (India)

An exact solution of magnetohydrodynamic convective flow with mass transfer past an accelerated vertical plate embedded in a porous medium is investigated. The governing equations are solved using the Laplace-transform technique. The influence of various parameters on the temperature, concentration and velocity as well as on the skin fraction, the rate of heat and mass transfer is studied graphically.

¹Prof. & Head Department of Chemistry M.L.S.M. College, Darbhanga, Bihar - 846004 (India)
²Research Scholar

Schiff’s base ligands were synthesized by the condensation reaction of   Naphthaldehyde with 7- Methoxy naphthalene – 2 – amine. Nitrate salts of divalent cobalt, nickel, copper and zinc were estimated by usual methods. Ligand was analysed for elements by standard method. pH metric titrations were carried out with the help of digital pH meter and stability constant of complexes of these metals with the ligands synthesized were computed by Irving- Rossoti technique modified by Calvin Bjerrum. The stability constant values of metals for the given metal were found to be in the order Cu(II) > Ni(II), Co(II) > Zn (II). This result is in agreement with the natural order proposed by Irving-William.

¹Department of Physics, A.D. Mahavidyalaya, Brahmagiri, Puri (India)
²Former Professor of Physics, SERC, Bhubaneswar (India)
³Department of Physics, Regional Institute of Education, Bhubaneswar (India)
⁴Department of Physics, N.C. Autonomous College, Jajpur (India)
⁵Department of Physics, KPAN College, Bankoi, Khurda (India)

This paper deals with Hydrodynamic unsteady flow and heat transfer in an elastic-viscous liquid over an oscillating porous plate in a rotating frame. The constitutive equation of motion and energy have been developed and solved with the approved boundary conditions. Profiles of velocity of flow and temperature have been drawn varying the fluid parameters involved. The values of skin-friction and the rate of heat transfer are entered in the tables. It is observed that the non- Newtonian parameter, thermal Grashof number, porosity parameter and rotation parameter affect the flow appreciably. Likewise, Prandtl number, porosity parameter and angular velocity influence the temperature field and the rate of heat transfer to a great extent.

¹Mahatma Gandhi Institute of Technology, Gandipet, Hyderabad-50075 (Telangana) (India)
² Jawaharlal Nehru Technological University Hyderabad, Kukatpally, Hyderabad-500085 (Telangana) (India)

A new family of Naphthyridines heterocycle have been synthesized by the condensation of various N-Substituted- Naphthyridines with tributyl(5-substitutedthiophen-2-yl)stannanes. All title compounds were thoroughly characterized by 1H, 13C NMR and Mass spectra.

Associate Professor & Head Priyadarshini J.L. College of Engg., 846 New Nandanvan, Nagpur (India)

Water is becoming a rare resource in the world. In India alone the International Water Management Institute (IWMI) predicts that by 2025, one person in three will live in conditions of absolute water scarcity (IWMI, 2003)(1). It is therefore essential to reduce surface and ground water use in all sectors of consumption, to substitute fresh water with
alternative water resources and to optimize water use efficiency through reuse options. This alternative. Resources include rainwater and grey water .Grey water is all wastewater that is discharged from a house, excluding backwater (toilet water). This includes water from showers, bathtubs, sinks, kitchen, dishwashers, laundry tubs, and washing machines. It commonly contains soap, shampoo, and toothpaste, food scraps, cooking oils, detergents and hair. Typically, 50-80% of the household wastewater is grey water. If a composting toilet is also used, then 100% of the household wastewater is grey water. Reusing grey water serves two purposes: it reduces the amount of freshwater needed to supply and reduces the amount of waste water entering sewer or septic systems.

P.G. Centre of Chemistry (M.U.), College of Commerce, PATNA – 800020 (India)
E-mail : rameshwarnath.pandey@yahoo.com    satyendrasharma1972@gmail.com

Some stable phosphine and arsine complexes of Palladium (0) ligated with ethylene thiourea of composition [Pd(RE3)2(etu)2] (E = C6H5, C6H5CH2& n-C4H9; R = P/As) are reported. The compositions of the complexes have been established by elemental analysis, magnetic susceptibility measurements, conductivity, IR and UV-vis spectral data. All complexes are four-coordinated and tetrahedral in which ligand acts as neutral monodentate.

Department of Mathematics, Pachaiyappa’s College, Chennai – 600 030 (India)

In this paper for the first time groupoid semirings using chain lattices as semirings are introduced and their properties are analysed. Here chain lattices are used as semirings and groupoid semirings are non associative semirings of finite order, as both the groupoids G and the chain lattice are of finite order.

¹Nargund college of Pharmacy, BSK 3rd stage, Bangalore-560085 (India)
²Dayananda Sagar College of Pharmacy, Shivage Hill, Kumarswamy Layout, Bangalore-560081 (India)
Corresponding author- Shachindra L Nargund,
Email: shachindra.nargund@gmail.com

The aim of the present study is to evaluate anti-microbial activity for novel substituted thienopyrimidines. The role of thienopyrimidine as anti-microbial agent is well established. Among thienopyrimidines, research in the field of Thieno[2,3-d] pyrimidin-4(3H)-one analogs is growing continuously due to their similarity to nucleic acids which play major role in viability of the cells. Hence many people involved themselves for the invention of new methods and also new analogs of thienopyrimidine molecule for their wide range of activity.

¹CSA Govt. PG Nodal College, Sehore, MP (India)
²Vidhya Nagar, Bhopal, MP (India)
³Dept. of Computer Appl. MDS University, Ajmer Raj. (India)

In this paper we present the experimental work with WEKA tool. We have use decision tree techniques for generating a predictive model with water quality data.

¹Department of Mathematics, Indian Institute of Technology, Chennai- 600 036 (India)
E-mail: vasanthakandasamy@gmail.com

In this paper the author for the first time has studied the zero divisor conjecture for the group semifields; that is groups over semirings. It is proved that whatever group is taken the group semifield has no zero divisors that is the group semifield is a semifield or a semidivision ring. However the group semiring can have only idempotents and no units. This is in contrast with the group rings for group rings have units and if the group ring has idempotents then it has zero divisors.