The theory on variable ionization energy of surface sites is criticized based on inconsistencies of traditional potentiometric titration data (singular reference curve methods) with electrophoretic mobility (EM) data, and on the nature of dissolution of the solid phase. The mathematical consequences of including the Boltzmann distribution term in models using intrinsic equilibrium constants are...

We find the electric field of a point charge in presence higher dimensional black hole. As is lowered to horizon, all multipole moments go zero, and only Coulomb remains.

stability and performance are two main issues in motion of bipeds. to ensure stability of motion, a biped needs to follow specific pattern to comply with a stability criterion such as zero moment point. however, there are infinity many patterns of motion which ensure stability, so one might think of achieving better performance by choosing proper parameters of motion. step length and step perio...

The random-bond Ising model on the square lattice has several disordered critical points, depending on the probability distribution of the bonds. There are a finite-temperature multicritical point, called Nishimori point, and a zerotemperature fixed point, for both a binary distribution where the coupling constants take the values ±J and a Gaussian disorder distribution. Inclusion of dilution i...

A High Cation Exchange Capacity (HCM) montmorillonite clay has been prepared by acetate treatment of Zenith clay. The HCM has been evaluated for metal-uptake from aqueous solutions. The present data show that the cation exchange sites can play a significant role in the adsorption of metals in smectite clays. A theoretical analysis scheme has been developed which shows that permanent-charge site...