Processes and systems for offering and granting digital rights that govern distribution and usage of content, services and resources. Specifically, the invention provides compositions and methods to sensitize cells to DNA-damaging agents by abrogating the cell cycle G2 checkpoint. By displaying the different pieces of sales promotion information using the display device provided near the product, it is possible to promote the product to the customer in two different ways, thereby stimulating the customer’s desire to buy the product and reducing loss in opportunities to sell the product. The first zone that resides closer to the outer edge of the flange seal is more resistant to shear stresses than the second zone residing near the inner edge of the flange seal. These compositions are conveniently prepared by a process including at least two steps and are useful as surfactants.