OPTICAL STUDIES OF PENICILLIN GROUP IN RELATION TO THEIR MEDICAL ACTIVITY

The study of Medical activity of antibiotics is gaining momentum now a days owing to the importance of their curative values. The Medical Activity correlated to molecular interactions,can be studied by various physical techniques, at present optical methods like Refractometry and Polarization are used to study the activity of a few antibiotics like Penicillin. The Refractive Indices Mean Molecular Polarizability Diamagnetic Susceptibilities and Electron Ionisation Cross Section are interpreted in terms of dosages and the toxic effects if any due to over dosages are discussed critically.

Effective Charge Effect in 2·0 - 7·0 MeV Partially Stripped Fq+ - Helium Collisions

The ratio of the double ionisation cross section to that of the single ionisation of helium was measured for 2�0–7�0 MeV Fq+ (q = 1,2,3,4) bombardment. The effective charge effect in partially stripped Fq+ – helium collisions is studied. It is found that the effective charge qeff increases as the impinging energy increases and that qeff shows almost no dependence upon the projectile charge state in the present energy range.