Understanding abscission is both a biological and an agronomic challenge. Flower abscission induced independently by shade and gibberellic acid (GAc) sprays was monitored in grapevine (Vitis vinifera L.) growing under a soilless greenhouse system during two seasonal growing conditions, in an early and late production cycle. Physiological and metabolic changes triggered by each of the two distin...

To show that an adsorbing biofilm carrier (GAC) can be advantageous for atrazine bioremediation over a non-adsorbing carrier, fluidized bed (FB) reactors were operated under atrazine limiting concentrations using Pseudomonas sp. strain ADP as the atrazine degrading bacteria. The following interrelated subjects were investigated: 1) atrazine adsorption to GAC under conditions of atrazine partial...

In many real-life problems, constraints are explicitly defined as a set of solutions. This ad hoc (table) representation uses exponential memory and makes support checking (for enforcing GAC) difficult. In this paper, we address both problems simultaneously by representing an ad hoc constraint with a multi-valued decision diagram (MDD), a memory efficient data structure that supports fast suppo...

This paper examines implementation models for distributed memory architectures of a Parallel Simulated Annealing using Genetic Crossover (PSA/GAc). The PSA/GAc that was proposed by authors is the algorithm, where there are several processes of a simulated annealing working parallel. To exchange information between the solutions, the operation of genetic crossover is performed. We need new model...

You are a manager at Global Automobile Corporation (GAC) which is a manufacturer of cars and trucks for domestic and international customers. You work in the contracting department where your responsibilities include managing relationships with GAC’s suppliers. Your supervisor has asked you to deal with an inquiry from another department about a part used by GAC that is manufactured by one of y...

Applying GAC on conjunctions of constraints can lead to more powerful pruning [1]. We show that there exists a simple heuristic for deciding which constraints might be useful to conjoin. The result is a useful automatic way of improving a CSP model for GAC solving.

The main problem addressed in this paper is the design of feedbacks for globally asymptotically controllable (GAC) control affine systems that render the closed-loop systems inputto-state stable (ISS) with respect to actuator errors. Extensions for fully nonlinear GAC systems with actuator errors are also discussed. Our controllers have the property that they tolerate small observation noise as...

In this paper, Parallel Simulated Annealing using Genetic Crossover (PSA/GAc) is applied to predict protein tertiary structures. The target protein is C-peptide that is consisted of 13 amino acids. The results are compared to those of the former studies. Then it is found that PSA/GAc is an effective method to predict protein tertiary structures.

Secondary metabolites are synthesized by many microorganisms and provide a fitness benefit in the presence of competitors and predators. Secondary metabolism also can be costly, as it shunts energy and intermediates from primary metabolism. In Pseudomonas spp., secondary metabolism is controlled by the GacS-GacA global regulatory system. Intriguingly, spontaneous mutations in gacS or gacA (Gac-...

Activated carbon (AC) has been shown to remove precursors of halogenated disinfection byproducts. Granular and powdered activated carbon (GAC, PAC) were investigated for their potential to adsorb N-nitrosodimethylamine (NDMA) precursors from blends of river water and effluent from a wastewater treatment plant (WWTP). At bench scale, waters were exposed to lignite or bituminous AC, either as PAC...