In the view of viscous potential flow theory, the hydromagnetic stability of the interface between two infinitely conducting, incompressible plasmas, streaming parallel to the interface and subjected to a constant magnetic field parallel to the streaming direction will be considered. The plasmas are flowing through porous media between two rigid planes and surface tension is taken into account. A general dispersion relation is obtained analytically and solved numerically. For Kelvin-Helmholtz instability problem, the stability criterion is given by a critical value of the relative velocity. On the other hand, a comparison between inviscid and viscous potential flow solutions has been made and it has noticed that viscosity plays a dual role, destabilizing for Rayleigh-Taylor problem and stabilizing for Kelvin-Helmholtz. For Rayleigh-Taylor instability, a new dispersion relation has been obtained in terms of a critical wave number. It has been found that magnetic field, surface tension, and rigid planes have stabilizing effects, whereas critical wave number and porous media have destabilizing effects.

Eight new photochromic dihydro 5-azaindolizine-linker-conjugates with a terminal ethylene anchoring
group have been synthesized via palladium-catalyzed Negishi coupling. Polychromatic light irradiation
of the photochromic dihydro 5-azaindolizines (DHAIs) led to ring-opened colored betaines which underwent
reversible thermal 1,5-electrocyclization into their corresponding DHAIs in the second domain. The
noteworthy multiaddressable photochromic properties are useful for a plethora of new applications for
these materials such as anchoring the ethylene group to metal-oxide nanoparticles.

Eight new photochromic dihydro 5-azaindolizine-linker-conjugates with a terminal ethylene anchoring
group have been synthesized via palladium-catalyzed Negishi coupling. Polychromatic light irradiation
of the photochromic dihydro 5-azaindolizines (DHAIs) led to ring-opened colored betaines which underwent
reversible thermal 1,5-electrocyclization into their corresponding DHAIs in the second domain. The
noteworthy multiaddressable photochromic properties are useful for a plethora of new applications for
these materials such as anchoring the ethylene group to metal-oxide nanoparticles.

Eight new photochromic dihydro 5-azaindolizine-linker-conjugates with a terminal ethylene anchoring
group have been synthesized via palladium-catalyzed Negishi coupling. Polychromatic light irradiation
of the photochromic dihydro 5-azaindolizines (DHAIs) led to ring-opened colored betaines which underwent
reversible thermal 1,5-electrocyclization into their corresponding DHAIs in the second domain. The
noteworthy multiaddressable photochromic properties are useful for a plethora of new applications for
these materials such as anchoring the ethylene group to metal-oxide nanoparticles.

The superiority of silver-doped titania for photocatalytic oxidation (PCO) of organic compounds inspired us to
investigate PCO of 1,2-cyclohexanediol. Ag/TiO2 was prepared, characterized (nanosize 19–24 nm) and used for
oxidation of 1,2-cyclohexanediol (1) in acetonitrile. The photolysate was analyzed using GC and GC/MS techniques.
The PCO products are 2-hydroxylcyclohexanone (2), 1,2-cyclohexandione (3), 2-cyclohexenone(4), cyclohexanone
(5), and adipic acid (6).The formation of electron–hole pair at the surface of the catalyst followed by oxidation
reactions was the suggested mechanism. Kinetic studies revealed first-order mechanism for PCO of 1 and rate
constant (k) =
0.145 h–1. Copyright © 2012 John Wiley & Sons, Ltd.

The superiority of silver-doped titania for photocatalytic oxidation (PCO) of organic compounds inspired us to
investigate PCO of 1,2-cyclohexanediol. Ag/TiO2 was prepared, characterized (nanosize 19–24 nm) and used for
oxidation of 1,2-cyclohexanediol (1) in acetonitrile. The photolysate was analyzed using GC and GC/MS techniques.
The PCO products are 2-hydroxylcyclohexanone (2), 1,2-cyclohexandione (3), 2-cyclohexenone(4), cyclohexanone
(5), and adipic acid (6).The formation of electron–hole pair at the surface of the catalyst followed by oxidation
reactions was the suggested mechanism. Kinetic studies revealed first-order mechanism for PCO of 1 and rate
constant (k) =
0.145 h–1. Copyright © 2012 John Wiley & Sons, Ltd.

The superiority of silver-doped titania for photocatalytic oxidation (PCO) of organic compounds inspired us to
investigate PCO of 1,2-cyclohexanediol. Ag/TiO2 was prepared, characterized (nanosize 19–24 nm) and used for
oxidation of 1,2-cyclohexanediol (1) in acetonitrile. The photolysate was analyzed using GC and GC/MS techniques.
The PCO products are 2-hydroxylcyclohexanone (2), 1,2-cyclohexandione (3), 2-cyclohexenone(4), cyclohexanone
(5), and adipic acid (6).The formation of electron–hole pair at the surface of the catalyst followed by oxidation
reactions was the suggested mechanism. Kinetic studies revealed first-order mechanism for PCO of 1 and rate
constant (k) =
0.145 h–1. Copyright © 2012 John Wiley & Sons, Ltd.