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Title: Synchronization of interconnected networks: The role of connector nodes
Author: Martinez-Ruvalcaba, A.
Sanchez-Diaz, J.C.
Becerra, F.
Cruz-Barba, L.E.
Gonzalez-Alvarez, A.
Issue Date: 2009
Abstract: Hybrid polymeric networks composed of polyacrylamide and chitosan were developed to determine their swelling and ascorbic acid delivery kinetics at various chitosan concentrations. The hybrid acrylamide/ chitosan hydrogels were synthesized in aqueous itaconic acid solution (1% w/w). Young's modulus was also evaluated for the hydrogels, and the results were correlated with the swelling properties. Swelling experiments were carried out using three different pH solutions: acidic (pH 4 buffer solution), neutral (distilled water) and basic (pH 10 buffer solution). The results of the swelling study showed that the swelling properties of the network varied with the changes of the pH in the swelling solution, as well as concentration of chitosan. When chitosan concentration increased, the swelling capacity diminished, and therefore Young's modulus increased. The results indicated that the swelling process followed a second order kinetics. The ascorbic acid diffusion inside the hydrogel follows a Fickian mechanism. The ascorbic acid diffusion coefficients are reported as a function of chitosan concentration. " BME-PT and GTE.",,,,,,"10.3144/expresspolymlett.2009.5",,,"","",,,,,,"1",,"Express Polymer Letters",,"25
WOS",,,,,,"Chitosan; Drug delivery; Mechanical properties; Polymer gels; Swelling kinetics",,,,,,"Swelling characterization and drug delivery kinetics of polyacrylamide-co-itaconic acid/chitosan hydrogels",,"Article" "46684","123456789/35008",,"Aguirre, J., Centro de Astrobiología, CSIC-INTA, Carretera de Ajalvir km 4, 28850 Torrejón de Ardoz, Madrid, Spain, Grupo Interdisciplinar de Sistemas Complejos (GISC), Germany; Sevilla-Escoboza, R., Centro Universitario de Los Lagos, Universidad de Guadalajara, Enrique Díaz de Leon, Paseos de la Montaña, Lagos de Moreno, Jalisco 47460, Mexico, Laboratory of Biological Networks, Center for Biomedical Technology, UPM, Pozuelo de Alarcón, 28223 Madrid, Spain; Gutiérrez, R., Department of Chemical Physics, Weizmann Institute of Science, Rehovot 76100, Israel; Papo, D., Group of Computational Systems Biology, Center for Biomedical Technology, UPM, Pozuelo de Alarcón, 28223 Madrid, Spain; Buldé, J.M., Laboratory of Biological Networks, Center for Biomedical Technology, UPM, Pozuelo de Alarcón, 28223 Madrid, Spain, Complex Systems Group, Universidad Rey Juan Carlos, 28933 Mástoles, Madrid, Spain",,"Aguirre, J.
Sevilla-Escoboza, R.
Gutierrez, R.
Papo, D.
Buldu, J.M.",,"2014",,"In this Letter we identify the general rules that determine the synchronization properties of interconnected networks. We study analytically, numerically, and experimentally how the degree of the nodes through which two networks are connected influences the ability of the whole system to synchronize. We show that connecting the high-degree (low-degree) nodes of each network turns out to be the most (least) effective strategy to achieve synchronization. We find the functional relation between synchronizability and size for a given network of networks, and report the existence of the optimal connector link weights for the different interconnection strategies. Finally, we perform an electronic experiment with two coupled star networks and conclude that the analytical results are indeed valid in the presence of noise and parameter mismatches. " 2014 American Physical Society.
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