P. Troncoso, Nelson Padilla, Carlos Carmona Santander, Claudia del P. Lagos, D. G. Lambas, Silvio Rodríguez, Sergio Contreras,
We use the EAGLE simulations to study the effects of the intra-cluster medium (ICM) on the spatially resolved star-formation activity in galaxies. We study three cases of galaxy asymmetry dividing each galaxy in two halves using the plane (i) perpendicular to the $\rm \texttt{velocity}$ direction, differentiating the galaxy part approaching to the cluster center, hereafter dubbed as the "leading half", and the opposite one "trailing half", (ii) perpendicular to the $\rm \texttt{radial}$ position of the satellite ...
Tópico(s): Stellar, planetary, and galactic studies
2020 - Oxford University Press | Monthly Notices of the Royal Astronomical Society
Silvio Rodríguez, Nelson Padilla,
By modelling the axis ratio distribution of SDSS DR8 galaxies we find the intrinsic 3D shapes of spirals and ellipticals. We use morphological information from the Galaxy Zoo project and assume a non-parametric distribution intrinsic of shapes, while taking into account dust extinction. We measure the dust extinction of the full sample of spiral galaxies and find a smaller value than previous estimations, with an edge-on extinction of $E_0 = 0.284^{+0.015}_{-0.026}$ in the SDSS r band. We also find ...
Tópico(s): Advanced Vision and Imaging
2013 - Oxford University Press | Monthly Notices of the Royal Astronomical Society
Silvio Rodriguez, H. W. Offen,
The phosphosescence lifetimes of 1,2,5,6-dibenzanthracene and triphenylene have been measured in polymethylmethacrylate as a function of temperature (77–360°K) at 1 atm and 30 kbar. Two temperature regimes with different activation energies are discernible for both compounds. Matrix compression has negligible influence on the ∼200-cm−1 activation energy below room temperature, but diminishes the larger activation energy (1500–4500 cm−1) above room temperature by 20%–25% at 30 kbar. The pressure data ...
Tópico(s): Analytical Chemistry and Sensors
1970 - American Institute of Physics | The Journal of Chemical Physics
Gerardo Gold, Silvio Rodriguez,
Solubility measurements of naphthalene in seawater of different salinities have been determined by the Generator Column Method in the 276.6 K to 316.8 K temperature range. The Gibbs free energy, enthalpy, and entropy of solution were evaluated at 298 K by means of the Clarke and Glew equation. The temperature dependence of the Setschenow parameters for naphthalene in seawater has been studied and compared with the values calculated using current models for the salting-out of nonpolar molecules. ...
Tópico(s): Thermodynamic properties of mixtures
1989 - NRC Research Press | Canadian Journal of Chemistry
... la primera generación de la nueva trova, especialmente Silvio Rodríguez y Pablo Milanés, las críticas del presente muestran ...
Tópico(s): Cuban History and Society
2008 - University of Pittsburgh Press | Cuban studies
Silvio Rodriguez, H. W. Offen,
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMicellar formation under pressureSilvio Rodriguez and Henry OffenCite this: J. Phys. Chem. 1977, 81, 1, 47–50Publication Date (Print):January 1, 1977Publication History Published online1 May 2002Published inissue 1 January 1977https://pubs.acs.org/doi/10.1021/j100516a011https://doi.org/10.1021/j100516a011research-articleACS PublicationsRequest reuse permissionsArticle Views47Altmetric-Citations14LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant ...
Tópico(s): Photosynthetic Processes and Mechanisms
1977 - American Chemical Society | The Journal of Physical Chemistry
P. Troncoso, Nelson Padilla, Sergio Contreras, Silvio Rodríguez, D. G. Lambas, Claudia del P. Lagos,
Previous works have shown that a dense cluster environment affects satellite galaxy properties and accelerates or truncates their evolutionary processes. In this work, we use the EAGLE simulation to study this effect, dissecting the galaxies in two halves: the one that is falling directly to the cluster (leading half) and the one behind (trailing half). Considering all galaxies within the virial radius of the most massive groups and clusters of the simulation ( M h a l o > 10 13 . 8 [ M ⊙ ] ), we find that on average ...
Tópico(s): Stellar, planetary, and galactic studies
2016 - Multidisciplinary Digital Publishing Institute | Galaxies
Silvio Rodríguez, D. G. Lambas, Nelson Padilla, P. B. Tissera, Lucas Bignone, R. Domı́nguez-Tenreiro, Roberto González, Susana Pedrosa,
ABSTRACT We study the impact of the environment on galaxies as they fall in and orbit in the potential well of a Local Group (LG) analogue, following them with high cadence. The analysis is performed on eight disc satellite galaxies from the CIELO suite of hydrodynamical simulations. All galaxies have stellar masses within the range $[10^{8.1}\!-\!10^{9.56}] \, \mathrm{M}_{\odot }\, {\rm h}^{-1}$. We measure tidal torques, ram pressure, and specific star formation rates (sSFRs) as a function of time, and correlate ...
Tópico(s): Gamma-ray bursts and supernovae
2022 - Oxford University Press | Monthly Notices of the Royal Astronomical Society
... ámbito musical contemporáneo de exponentes como los cubanos Silvio Rodríguez y Pablo Milanés o los brasileños Caetano Veloso ...
Tópico(s): Cultural, Media, and Literary Studies
2007 - University of Texas Press | Latin American Music Review
Miguel Ángel Huerta-Díaz, Silvio Rodriguez,
Accurate solubility measurements covering the range 278–318 K were obtained for the carbamate pesticide carbaryl (1-naphthyl-N-methylcarbamate) in water, natural and artificial seawater, and NaCl, Na 2 SO 4 , CaCl 2 , and (CH 3 ) 4 NBr electrolyte solutions. Carbaryl solubilities were determined using a combination of a generator column method and spectrophotometric techniques. In all cases the solubility of carbaryl in water and in the electrolyte solutions increased with an increase in temperature. The ...
Tópico(s): Chemical and Physical Properties in Aqueous Solutions
1992 - NRC Research Press | Canadian Journal of Chemistry
Silvio D. Rodríguez, Maite Gagneten, Abel Eduardo Farroni, Nora M. Percibaldi, Marı́a del Pilar Buera,
Chia (Salvia hispanica L.) and sesame (Sesamum indicum L.) oils are valorized for their health benefits and both are extensively used as ingredients in different food formulations and/or processes. Their retail prices are higher than those of other edible oils and might promote fraudulent adulterations. Spectroscopic methods associated to untargeted analysis are appropriate and faster than traditional techniques, requiring less time to prepare and run the samples. In the present study Fourier transform ...
Tópico(s): Edible Oils Quality and Analysis
2019 - Elsevier BV | Food Control
Silvio D. Rodríguez, Guido Rolandelli, Marı́a del Pilar Buera,
Quinoa flour has been receiving an increasing attention as a substitute for wheat flour in bread formulations due to immuno-nutritional features. This growing interest in quinoa has increased the demand and consequently the prices, being a target for possible adulterations with cheaper cereals. Fourier transform Mid-infrared spectroscopy (FT-MIR) was used in the present work as a fingerprinting technique to detect the presence of three adulterants (soybean, maize and wheat flours). Partial least squares ...
Tópico(s): Food composition and properties
2018 - Elsevier BV | Food Chemistry
Mario Cueto, Abel Eduardo Farroni, Silvio D. Rodríguez, Regine Schöenlechner, Gerhard Schleining, Marı́a del Pilar Buera,
Tópico(s): Seed and Plant Biochemistry
2018 - Springer Science+Business Media | Food and Bioprocess Technology
Silvio D. Rodríguez, Mariana von Staszewski, Ana M.R. Pilosof,
The objective of the work was to study foaming and interfacial properties of β-lactoblobulin and caseinomacropeptide as affected by the formation of nano-particles with increasing amounts of green tea polyphenols. In this contribution foams were obtained by whipping and the overrun, liquid drainage and height stability of the foams were evaluated. The interfacial properties were determined by a drop tensiometer. The formation of nano-particles (30–90 nm) decreased the surface pressure and the elastic ...
Tópico(s): Food composition and properties
2015 - Elsevier BV | Food Hydrocolloids
Silvio D. Rodríguez, Diego A. Barletta, Tom F. Wilderjans, Delia L. Bernik,
The objective of this work is to report the improvements obtained in the discrimination of complex aroma samples with subtle differences in odor pattern, by the use of a fast procedure suitable for the cases of measurements in the field demanding decision-making in real time using a portable electronic nose. This device consists of a sensor array which records changes in conductivity as a function of time when aroma molecules reach the sensors. The core of the method consists of applying unfolded ...
Tópico(s): Analytical Chemistry and Chromatography
2014 - Springer Science+Business Media | Food Analytical Methods
Silvio D. Rodríguez, Delia L. Bernik,
Hylon VII is a high amylose corn starch which has excellent gelling properties, and its behavior as flavor encapsulant is relevant to the food industry because its ability to regulate a swelling-controlled release in aqueous media.We studied the release of vanillin, encapsulated in Hylon VII under experimental conditions in which the amyloseevanillin inclusion complex is obtained, along with the enzymatic hydrolysis of the starch carried out using salivary amylase of human origin.The flavor release ...
Tópico(s): Fermentation and Sensory Analysis
2014 - Elsevier BV | LWT
Silvio D. Rodríguez, Tom F. Wilderjans, Natalia Sosa, Delia L. Bernik,
Native starch derivatization with octenyl succinic anhydride (OSA) is a chemical modification designed to enhance flavor microencapsulation performance. Hi Cap 100 and Capsul are two OSA starches derived from waxy maize base, which are especially suited for encapsulation processes. This work performs for the first time the encapsulation of vanilla extract with Capsul and Hi Cap 100 using both spray and freeze drying procedures. The encapsulation efficiency was studied correlating the starch texture ...
Tópico(s): Spectroscopy and Chemometric Analyses
2013 - Canadian Center of Science and Education | Journal of Food Research
Silvio D. Rodríguez, Delia L. Bernik, Raphaël Méreau, Frédéric Castet, Benoı̂t Champagne, Edith Botek,
A joint experimental and theoretical study has been carried out on the amylose–vanillin complex, demonstrating its formation by X-ray diffraction as well as UV/visible and circular dichroism spectroscopic techniques. Theoretical simulations substantiate these experimental data and the variations of properties upon complexation by evidencing the stability of the inclusion of vanillin in the helical cavity as well as by explaining the related changes of the linear (chiro-)optical properties. In particular, ...
Tópico(s): Fermentation and Sensory Analysis
2011 - American Chemical Society | The Journal of Physical Chemistry C
Jorge Yánez Heras, Silvio D. Rodríguez, R. Martı́n Negri, Fernando Battaglini,
Impedance spectroscopy combined with principal component analysis allows the trace detection of metal ions. The detection system is based on two modified electrodes, each of them containing a chelating agent (pyrocatechol violet and a nitrilotriacetic derivative); as the chelator is able to capture the metal ion at very low concentrations, important electrical changes are produced on the surface environment, generating patterns with different features for each ion. The system is able to differentiate ...
Tópico(s): Analytical Chemistry and Sensors
2010 - Elsevier BV | Sensors and Actuators B Chemical
R. Martı́n Negri, Silvio D. Rodríguez, Delia L. Bernik, Fernando V. Molina, Ana M.R. Pilosof, Oscar E. Pérez,
A model for the dependence of the electrical conductance, G, with the strain induced by external mechanical stress in conducting particles-polymer composites is presented. The model assumes that the percolation probability between neighboring particles must depart from a scale-invariant behavior but saturate at moderated-high strains, reaching percolation path’s saturation, with sigmoid dependence. This dependence is obtained by proposing a dynamic picture where contacts or bonds between neighboring ...
Tópico(s): Smart Materials for Construction
2010 - American Institute of Physics | Journal of Applied Physics
Produção Nacional
Revisado por pares
Vitor Renaux Hering, Tanize Espírito Santo Faulin, Eduardo Rezende Triboni, Silvio D. Rodríguez, Delia L. Bernik, Robert I. Schumacher, Victor P. Mammana, Adelaide Faljoni‐Alário, Dulcinéia Saes Parra Abdalla, Gary A. P. Gibson, Mário J. Politi,
Fluorescent proteins from the green fluorescent protein family strongly interact with CdSe/ZnS and ZnSe/ZnS nanocrystals at neutral pH. Green emitting CdSe/ZnS nanocrystals and red emitting fluorescent protein dTomato constitute a 72% efficiency FRET system with the largest alteration of the overall photoluminescence profile, following complex formation, observed so far. The substitution of ZnSe/ZnS for CdSe/ZnS nanocrystals as energy donors enabled the use of a green fluorescent protein, GFP5, ...
Tópico(s): Advanced Biosensing Techniques and Applications
2009 - American Chemical Society | Bioconjugate Chemistry
Silvio D. Rodríguez, Marı́a Eugenia Monge, Alejandro C. Olivieri, R. Martı́n Negri, Delia L. Bernik,
This work studies the changes along days of the aroma released from a flavour encapsulated in a polysaccharide gel matrix using the electronic nose methodology. The purpose is to explore the capacity of the sensor array to assign a pattern of aroma to the corresponding release day within a total period of five days. Different procedures of data treatment and analysis are compared in order to achieve the maximum of information of the system under study in conditions where the number of measurements ...
Tópico(s): Spectroscopy and Chemometric Analyses
2009 - Elsevier BV | Food Research International
María A. Zinni, Silvio D. Rodríguez, Rodrigo Pontiggia, Javier M. Montserrat, Luis E. Iglesias, Adolfo M. Iribarren,
Tópico(s): HIV/AIDS drug development and treatment
2004 - Elsevier BV | Journal of Molecular Catalysis B Enzymatic
José D. Luna, Xavier S Ponssa, Silvio D Rodríguez, Norma C Luna, CIaudio P Juárez,
Abstract. Rhino-orbital-cerebral mucormycosis is a disease that is frequently fatal. A 39-year-old man with diabetic ketoacidosis was referred to the authors' ophthalmic service with fever, orbital apex syndrome in the right eye, lethargy, and a black eschar in the palate. He was treated with systemic and local (intraconal) amphotericin B and his ketoacidosis was controlled; exenteration was not performed. Biopsy of the palate proved mucormycosis. Eighteen months later the patient was still alive ...
Tópico(s): Ocular Infections and Treatments
1996 - | Ophthalmic surgery, lasers & imaging retina
... to melodies by Violeta Parra, Atahualpa Yupanqui, and Silvio Rodríguez, transferring the songs into a new context.
Tópico(s): German History and Society
2020 - Cambridge University Press | twentieth-century music
... fábula de los tres hermanos, del cantautor cubano Silvio Rodríguez Domínguez. Se espera que a través de estos ...
Tópico(s): Educational Innovations and Technology
2016 - Pedagogical and Technological University of Colombia | Praxis & Saber
Silvio Rodríguez, Nelson Padilla, D. G. Lambas,
We measure the effect of the environment on the intrinsic shapes of spiral and elliptical galaxies by finding the 3D shape distribution and dust extinction that fits better the projected shape of galaxies in different environment. We find that spiral galaxies in groups are very similar to field spirals with similar intrinsic properties (magnitudes, sizes and colours). But for spirals in groups, those in denser environments or closer to the centre of the group tend to have a more circular disc than ...
Tópico(s): Stellar, planetary, and galactic studies
2015 - Oxford University Press | Monthly Notices of the Royal Astronomical Society
Silvio Rodriguez, E. G. Villabona-Leal, Juan Carlos Mixteco-Sánchez, V. H. Romero, H. Desirena, Elı́as Pérez, U. Salazar-Kuri, O. Meza,
Tópico(s): Perovskite Materials and Applications
2018 - Springer Science+Business Media | Journal of Sol-Gel Science and Technology
María Paula López‐Fernández, Silvio D. Rodríguez, Leonardo Cristian Favre, Verónica María Busch, Marı́a del Pilar Buera,
The aim of the present study was to evaluate the physicochemical, thermal and pasting properties of the starch of six quinoa genotypes native to the northwest of Argentina. The genotypes belonging to two genotype groups, highlands and dry valley, were grown in Jujuy, Argentina. Significant differences among genotypes were observed (P < 0.05) in amylose content, swelling power, water-binding capacity, thermal and pasting properties. In the different genotypes, the starch was characterized by a typical ...
Tópico(s): Seed and Plant Biochemistry
2020 - Elsevier BV | LWT
Guido Rolandelli, Silvio D. Rodríguez, Marı́a del Pilar Buera,
The effects of the addition of pectin (P), guar gum (GG), and gallic acid (GA) on the pasting properties and retrogradation kinetics of sweet potato starch (SPS) during storage at 4 °C were evaluated by whiteness, as a measure of turbidity, molecular mobility, and differential scanning calorimetry analysis. The incorporation of GG increased the peak, hot paste, breakdown, and final viscosities of the systems, while the opposite resulted with the addition of P and GA. Gallic acid was particularly effective ...
Tópico(s): Nanocomposite Films for Food Packaging
2023 - Elsevier BV | Food Hydrocolloids