Federal Institute of Science
Federal Institute of Science
De Almeida A.M.F.,Federal University of Sergipe |
Pamplona F.M.P.,Federal Institute of Science |
Braz H.D.M.,Federal University of Paraiba |
Da Silva J.A.C.B.,Federal University of Campina Grande |
Barros L.S.,Federal University of Rio Grande do Norte
2014 6th World Congress on Nature and Biologically Inspired Computing, NaBIC 2014 | Year: 2014
This paper deals with integrated voltage and harmonics distortion control (volt/THD) for radial distribution feeders in planning issues, by means of the application of automatic voltage regulators (AVRs) banks and harmonic passive filters. A multiobjective genetic algorithm (SPEA2) improved using fuzzy logic is presented to solve the VOLT/THD problem, since it is a combinatorial multiobjective optimization problem. The expert knowledge is taken into account via fuzzy logic in order to reduce the search space using voltage regulators in standard units. According to the multiobjective optimization fundamentals, an optimal solution ensemble is obtained, which concomitantly represents the solutions to both objectives, in such way that the operational restrictions of systems are satisfied. Two objectives have been established: voltage level deviation and total harmonic distortion. An algorithm is applied to harmonic analysis in radial systems, with application of models compatible with practical data. The algorithm is evaluated for a known 34-bus feeder in the literature of the subject. © 2014 IEEE.
Sampaio A.H.R.,Federal Institute of Science |
Filho M.A.C.,Brazilian National Council for Scientific and Technological Development |
Souza L.D.,Brazilian National Council for Scientific and Technological Development |
Brito R.B.F.,UFRB |
Da Silva R.O.,UFRB
Revista Brasileira de Fruticultura | Year: 2016
This study aimed to evaluate, under field conditions, different combinations between ‘Pera’ sweet orange and eight rootstocks: ‘Rangpur’ lime (RL), ‘Volkamer’ lemon (VL), ‘Cleopatra’ mandarin (CM), ‘Sunki Maravilha’ mandarin (SMM), ‘Indio’ and ‘Riverside’ citrandarins, and VL x RL (‘Rangpur’ lime)-010 and TH-051 hybrids. The soil water matric potential (Ѱm) was characterized for all scion-rootstock combinations at distance of 1.0m from the trunk at the plant row direction and depths of 0.25 m, 0.50 m 0.90 m in the dry and wet seasons. For two years, fruit production parameters and fruit quality were assessed. Differences of Ѱm among scion-rootstock combinations were observed during the dry season (p≤0.05). The lowest Ѱm values for RL and the highest for TH-051 indicate the existence of different intrinsic mechanisms affecting the water extraction of each scion-rootstock combination. Rootstocks have influenced fruit yield and quality (p≤0.05). The best combinations for fruit quality and production were sweet orange grafted on ‘Riverside’, ‘Indio’ and TH-051 rootstocks. © 2016, Sociedade Brasileira de Fruticultura. all rights reserved.
da Silva S.L.M.,Federal Institute of Science |
Arcanjo A.H.M.,Federal Institute of Science |
Pinto L.R.,Federal Institute of Science |
Rosa G.P.,Federal Institute of Science |
de Souza G.H.,Federal Institute of Science
International Journal of High Dilution Research | Year: 2011
Highly-diluted medicines are used in clinical practice to treat many pathologies of pigs [1-4]. This therapeutic tool had its potential for valued use due to the global scenario changing on the restriction to limit of antimicrobial residues in the security feeding and production of foods from animal origin for human consume, especially the meat production . Through the evidence of mass measurement, the usage profile of group B treatment shown to work with pigs and give greater weight live gain in group A during the available trial. Future studies should be conducted with larger numbers of animals to confirm the incidence of the unique profile, with replications to assess the complete production cycle, including the relationship ending / sow / year. Finally, other scales and dilutions should be analyzed to adjust for best answer from the best treatment effect profile.