This review considers the recent investigations in scope of biodegradability synthetic polymers, spanning polyethylene (PE), polypropylene (PP), and their corresponding composites, with a focus on influence oxo-additives (mostly transition metal salts). The types mechanisms oxidation acceleration are discussed. Furthermore, both physicochemical biological stages degradation is evaluated (labora...

an hplc method for determination of mebeverine hydrochloride (mh) in the presence of its degradation products was developed. the degradation of mh was studied under hydrolysis, oxidative and photolysis stress conditions. under alkaline, acidic and oxidative conditions, degradation of mh was observed. the separation was performed using a symmetry c 18 column and a mixture of 50 mm kh 2 po 4 , ac...

The D1 and D2 proteins of the photosystem II (PSII) reaction center are stable in the dark, while rapid degradation occurs in the light. Thus far, a quantitative correlation between degradation and photon fluences has not been determined. In Spirodela oligorrhiza, D1-D2 degradation increases with photon flux. We find that kinetics for D2 degradation mirror those for D1, except that the actual h...