Search

This paper considers the product service scheduling problem with service matching. This problem is a complex scheduling problem that integrates multiple traveling salesman problem (MTSP) and multiple service types. To solve the problem, a tabu search method was presented. With the objective of minimizing the total of engineers' travel distances, total of the customer penalty values, and makespan, an optimization model of this problem is established. The historical search solutions are taken as tabu object, and limiting the quantity of search neighborhood solution is taken as the aspiration level. At last, the adaptability, validity, and stability of the model are verified by an example. [ABSTRACT FROM AUTHOR]

1-Amino-2,2-difluorocyclopropane-1-carboxylicacid (DFACC)is of interest in the study of 1-aminocyclopropane-1-carboxylicacid (ACC) deaminase due to the increased reactivity of its cyclopropylfunctionality. It is shown that DFACC is unstable under near-physiologicalconditions where it primarily decomposes via specific-base catalysisto 3-fluoro-2-oxobut-3-enoic acid with a rate constant of 0.18 ±0.01 min–1. Upon incubation with ACC deaminase,DFACC is found to be a slow-dissociating inhibitor of ACC deaminasewith submicromolar affinity. [ABSTRACT FROM AUTHOR]