Sharif Digital Repository

Oil reservoir Protection and production optimization requires the proper use of EOR methods. One of the conventional methods of EOR is chemical flooding (for example polymer, alkaline – Polymer, Nano - Polymer and Alkaline - Nano – Polymer flooding) which used for controlling mobility ratio of fluid within a reservoir, altering surface tension between fluids, and change reservoir wettability. On the other hand prediction of oil production in reservoirs during chemical injection processis impossible without having two-phase relative permeability functions and meanwhile, data from the experimental results of these functions are limited.In this study, effect of polymer type and concentration in... 

Levodopa [L-3, 4-dihydroxyphenylalanine, or L-DOPA] is an important neurotransmitter used for the treatment of neural disorders such as Parkinson’s disease. Abnormal L-Dopa concentrations in biological fluids can be used for evaluation of diseases such as Parkinson’s diseases. In the first part of this thesis, a rapid and sensitive method for levodopa detection was reported which is based on in situ formation of polylevodopa nanoparticles. The assay is very simple and low cost and uses only NaOH and HCl as reagents. Under alkaline conditions, levodopa is spontaneously oxidized to its quinone derivative and shows the fluorescence properties. The fluorescence signal of the oxidation product of...