Hurdle technology is a method of ensuring that food products will be safe for consumption and extending their shelf life. It also ensures that pathogens in food products will be eliminated. Hurdle technology is used in food industry for the gentle but effective preservation of foods. The shelf life, sensory and nutritional quality of foods are based on applications of combined preservative fact...

We define branch products relations, a new product construction. Branch product relations generalize direct products, lexicographic products, and ordered sums. We investigate criteria for various properties of relations to be preserved by branch products, focusing on branch products over trees. Among our nicer results are the preservation of poset dimension and various order-completeness proper...

Abstract We give sufficient conditions to ensure that the intersection of product two subgroups A and B a group G with an abelian normal subgroup K is .