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Browsing Artigos by Title

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  • Oliveira, L.; Caquito Jr., J. M.; Rocha, M. S. (Biophysical Chemistry, 2018-10)
    Here we report a new study performed at single molecule level on the interaction of the antineoplastic drug Carboplatin and the DNA molecule - the main target of the drug inside cells in cancer chemotherapies. By using ...
  • Martins, M. L.; Ceotto, G.; Alves, S. G.; Bufon, C. C. B.; Silva, J. M.; Laranjeira, F. F. (Physical Review E., 2000-06-14)
    A cellular automata model is proposed to analyze the progress of citrus variegated chlorosis epidemics in São Paulo orange plantations. In this model epidemiological and environmental features, such as motility of sharpshooter ...
  • Morales, Ivan; Neves, Bruno; Oporto, Zui; Piguet, Olivier (The European Physical Journal C, 2017-02)
    Five-dimensional Chern–Simons theory with (anti-)de Sitter SO(1,5) or SO(2,4) gauge invariance presents an alternative to general relativity with cosmological constant. We consider the zero modes of its Kaluza–Klein ...
  • Rodrigues, Nathann T.; Oliveira, Tiago J. (Physical Review E, 2017-12)
    We present results from extensive Monte Carlo simulations of polymer models where each lattice site can be visited by up to K monomers and no restriction is imposed on the number of bonds on each lattice edge. These multiple ...
  • Ferreira, Silvio C.; Sander, Renan S.; Pastor-Satorras, Romualdo (Physical Review E., 2016-03-14)
    We consider a general criterion to discern the nature of the threshold in epidemic models on scale-free (SF) networks. Comparing the epidemic lifespan of the nodes with largest degrees with the infection time between them, ...
  • Oliveira, Marcelo M. de; Alves, S. G.; Ferreira, S. C.; Dickman, Ronald (Physical Review E, 2008-09-29)
    We study the continuous absorbing-state phase transition in the contact process on the Voronoi-Delaunay lattice. The Voronoi construction is a natural way to introduce quenched coordination disorder in lattice models. We ...
  • Oliveira, Marcelo M. de; Alves, Sidiney G.; Ferreira, Silvio C. (Physical Review E, 2016-01-11)
    We study absorbing-state phase transitions (APTs) in two-dimensional Voronoi-Delaunay (VD) random lattices with quenched coordination disorder. Quenched randomness usually changes the criticality and destroys discontinuous ...
  • Rocha, M. S.; Alves, P. S.; Mesquita, O. N. (The Journal of Physical Chemistry Letters, 2015-08-26)
    We have investigated the interaction between the native neutral β- cyclodextrin (CD) and the DNA molecule by performing single-molecule stretching experiments with optical tweezers. In particular, we have monitored the ...
  • Lima, C.H.M.; Almeida, G.O.; Rocha, M.S. (Biochimica et Biophysica Acta (BBA) - General Subjects, 2018-01-30)
    We report a high cooperative transition from the semi-flexible to the flexible regime of polymer elasticity during the interaction of the DNA molecule with the chemotherapeutic drug Mitoxantrone (MTX). By using single ...
  • Crisafuli, F. A. P.; Silva, L. H. M. da; Ferreira, G. M. D.; Ramos, E. B.; Rocha, M. S.; Walter, Nils (Biopolymers, 2015-11-30)
    In this work we have investigated the role of high molecular weight poly(ethylene‐glycol) 8000 (PEG 8000) in modulating the interactions of the DNA molecule with two hydrophobic compounds: Ethidium Bromide (EtBr) and GelRed ...
  • Brandao, Mariana P.; Gouvea Neto, Marina; Anjos, Virgílio de Carvalho dos; Bell, Maria José V. (Food Control, 2017-06-07)
    The increasing importance of goat milk renews the need to examine the authenticity of goat milk powder and to identify frauds with cow milk powder. The use of front-face and time-resolved fluorescence techniques to identify ...
  • Amaral, Marco Antonio; Silva, R. L.; Pereira, Afrânio R.; Melo, Winder A. Moura (Journal of Magnetism and Magnetic Materials, 2009-10)
    We study the Belavin–Polyakov double core skyrmions in two-dimensional isotropic Heisenberg ferromagnets on a discrete square lattice by means of spin dynamic simulations using periodic boundaries conditions. It is also ...
  • Cesconetto, E. C.; A. Junior, F. S.; Crisafuli, F. A. P.; Mesquita, O. N.; Ramos, E. B.; Rocha, M. S. (Physical Chemistry Chemical Physics, 2013-05-07)
    We have studied the interaction between the anticancer drug Actinomycin D (ActD) and the DNA molecule by performing single molecule stretching experiments and atomic force microscopy (AFM) imaging. From the stretching ...
  • Reis, L. A.; Rocha, M. S. (Biopolymers, 2017-01-18)
    In this work, we use force spectroscopy to investigate the interaction between the DAPI fluorescent dye and the k-DNA molecule under high (174 mM) and low (34 mM) ionic strengths. Firstly, we have measured the changes on ...
  • Reis, L. A.; Ramos, E. B.; Rocha, M. S. (The Journal of Physical Chemistry B, 2013-10-28)
    We have studied the interaction of the DNA molecule with the ligand 3,3′-diaminobenzidine (DAB) by performing single molecule stretching experiments with optical tweezers and dynamic light scattering (DLS) on the DNA−DAB ...
  • Silva, E. F.; Ramos, E. B.; Rocha, M. S. (The Journal of Physical Chemistry B, 2013-05-28)
    By performing single molecule stretching experiments with optical tweezers, we have studied the DNA interaction with the ligand Hoechst 33258. The mechanical properties of the complexes formed as a function of ligand ...
  • Silva, E. F.; Bazoni, R. F.; Ramos, E. B.; Rocha, M. S. (Biopolymers, 2016-10-05)
    We have investigated the interaction of the DNA molecule with the anticancer drug doxorubicin (doxo) by using three different experimental techniques: single molecule stretching, single molecule imaging, and dynamic light ...
  • Moura, Luciano G.; Moutinho, Marcus V.O.; Venezuela, Pedro; Mauri, Francesco; Righi, Ariete; Strano, Michael S.; Fantini, Cristiano; Pimenta, Marcos A. (Carbon, 2017-06)
    Single-chirality (n, m) carbon nanotubes exhibit the same richness in physics of graphene including an additional phenomenon: the quantum confinement of electrons and phonons along the nanotubes circumference. Raman ...
  • Lima, C. H. M.; Paula, H. M. C. de; Silva, L. H. M. da; Rocha, M. S. (Biopolymers, 2017-10-23)
    In this work, we have studied the interaction between the anticancer drug doxorubicin (doxo) and condensed DNA, using optical tweezers. To perform this task, we use the protein bovine serum albumin (BSA) in the working ...
  • Teixeira, A. V.; Geissler, E.; Licinio, P. (The Journal of Physical Chemistry B, 2006-09-22)
    We present dynamic light scattering (DLS) measurements of soft poly(methyl-methacrylate) (PMMA) and polyacrylamide (PA) polymer gels prepared with trapped bodies (latex spheres or magnetic nanoparticles). We show that the ...

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