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Modified release dosage forms offer definite advantages over conventional release formulation of the same drug.The three-layered matrix system overcomes inherent disadvantages of non-linearity associated with the core, covered by two additional layers, each with different rates of swelling, gelling and erosion, is what accounts for the rate of drug release. When the tablet is first swallowed, the drug concentration is high but the surface area is small. As time goes by and the core swells, the surface area expands to compensate for the decrease in drug concentration. Based on these...

The book covers cultural orientation of cybernetics. In doing so, it aims at discussing cybernetics from the vantage point of some monumental theories like psychoanalysis, feminism and to some extent Marxism. Extending Donna Haraway the book takes an attempt to investigate if prosthesis of mind is possible. In dealing so, the politics and the power-play of cyberspace are also taken into consideration.