In this paper we study magnetic field, chemical reaction and viscous dissipation on combined heat
and mass transfer over a moving permeable vertical flat plate. A variable magnetic field parallel to the y axis and
convective surface boundary condition are applied. The similarity representations of the system of partial
differential equations of the problem are obtained via the group method. These similarity equations are then
solved numerically by a MATLAB package which uses an implicit finite difference technique. Influences of the
various parameters on the velocity, the temperature and the concentration fields across the boundary layer are
investigated and numerical results for the velocity, temperature and concentration distributions are shown. The
skin-friction factor, the Nusselt number and the Sherwood number are also calculated and displayed in graphs
to show the effects of various parameters on them

In this paper, we examine the convective flow and heat transfer of an incompressible viscous nanofluid past a
semi-infinite vertical stretching sheet in the presence of a magnetic field. The governing partial differential
equations with the auxiliary conditions are reduced to ordinary differential equations with the appropriate
corresponding conditions via scaling transformations. The analytical solutions of the resulting ODEs are
obtained, and from which the analytical solutions of the original problem are presented. The influence of
pertinent parameters such as the magnetic parameter, the solid volume fraction of nanoparticles and the type
of nanofluid on the flow, heat transfer, Nusselt number and skin friction coefficient is discussed. Comparison
with published results is presented

The present paper dealing with the effects of Hall and ion-slip currents on the flow
of a steady, viscous, incompressible, electrically conducting micro-polar fluid past a vertical
plate in a saturated porous medium has been studied for the case of a weak concentration.
The effects of viscous dissipation and Ohmic heating are incorporated in the energy equation.
Governing partial differential equations are reduced to a system of ordinary differential equations
by the usual method of similarity transformation and then solved numerically with the
Nachtsheim-Swigert shooting iteration technique based on the Runge-Kutta sixth order iteration
scheme. The expressions for the non-dimensional velocity, angular velocity and temperature
profiles are shown graphically for different values of the Prandtl number Pr, micro-polar
parameter Δ, Grashof number Gr, permeability parameter K2, magnetic field parameter M,
Hall parameter β
e, ion-slip parameter β
i and micro-rotational parameter λ. Further, the effects of
the problem parameters on skin friction coefficients due to primary and secondary velocity, local
couple stress and the local Nusselt number are constructed graphically. Comparisons with
previous published works are performed and the results are found to be in favourable agreement

A simple and efficient one-pot three component synthesis of spiro{pyrido[2,1-b]benzothiazole-3,3'-indoline} and/or spiro{thiazolo[3,2-a]pyridine-7,3'-indoline} derivatives were carried out by the reaction of 2-mercaptoaniline and/or mercaptoacetic acid, malononitrile, and a series of 2-oxoindoline-3-ylidines in aqueous medium. This method is of great value because of its environmentally benign character, high yield processing, and easy handling.

A simple and efficient one-pot three component synthesis of spiro{pyrido[2,1-b]benzothiazole-3,3'-indoline} and/or spiro{thiazolo[3,2-a]pyridine-7,3'-indoline} derivatives were carried out by the reaction of 2-mercaptoaniline and/or mercaptoacetic acid, malononitrile, and a series of 2-oxoindoline-3-ylidines in aqueous medium. This method is of great value because of its environmentally benign character, high yield processing, and easy handling.

1-Hydrazino-3-thioxo-5,6,7,8-tetrahydroisoquinoline-4-carbonitrile (3) was subjected to react with
bifunctional compounds namely: acetylacetone, ethyl cyanoacetate, ethyl benzoylactate, diethylmalonate
and ethyl acetoacetate to produce pyrazololthienotetrahydroisoquinoline derivatives 6e11. Also, heating
of compound (3) with formic acid afforded triazolothienotetrahydroisoquinoline compound 5 which
reacted with a-halogenated compounds to afford compounds 13aee. Compound 13c when heated with
triethylorthoformate afforded triazolo derivative 14. Also, compound 6 was used for synthesizing
compounds 18e20. Representative compounds of the synthesized triazolo and pyrazolothienotetrahydroisoquinoline
products were tested and evaluated as antimicrobial agents.