J.P. Garcı́a Azorero, Ireneo Peral, Juan J. Manfredi,
... Years as MentorBoumediene Abdellaoui, Juan Antonio Aguilar, Begoña Barrios, Eduardo Colorado and Fernando Charro et al.24 March ...
Tópico(s): Advanced Numerical Methods in Computational Mathematics
2000 - World Scientific | Communications in Contemporary Mathematics
Ricardo del Barrio, Eduardo Fernández, Andrea Soledad Brendel, Cory Whitney, José Antonio Campoy, Eike Luedeling,
Abstract Winter chill is expected to decrease in many of the suitable growing regions for deciduous trees. Argentinean North Patagonia hosts extensive fruit tree cultivation, which provides an important contribution to both local and global food security. Using historic records from 11 weather stations from North Patagonia, we evaluate the possible impacts of climate change on fruit tree cultivation. We assess winter chill and seasonal heat availability, and the risk of spring frost events based ...
Tópico(s): Insect-Plant Interactions and Control
2020 - Wiley | International Journal of Climatology
Produção Nacional
Revisado por pares
Daniela Dornelles Rosa, José Bines, Gustavo Werutsky, Carlos H. Barrios, Eduardo Cronemberger, Geraldo Silva Queiroz, Vladmir Cláudio Cordeiro de Lima, Ruffo Freitas‐Júnior, José d’Oliveira Couto, Karla Emerenciano, Heloísa Resende, Susane Crocamo, Tomás Reinert, Brigitte Van Eyil, Yeni Nerón, V Dybal, Nicolas Lazaretti, Rita de Cassia Costamilan, Diocésio Alves Pinto de Andrade, Clarissa Mathias, Giovana Zerwes Vacaro, Giuliano Santos Borges, Alessandra Morelle, Maira Caleffi, Carlos Sampaio Filho, Max S. Mano, Facundo Zaffaroni, Rafaela Gomes de Jesus, Sérgio D. Simon,
Tópico(s): Cancer Risks and Factors
2020 - Springer Science+Business Media | Breast Cancer Research and Treatment
Camilo Ignacio Jaramillo‐Barrios, Eduardo Barragán Quijano, Buenaventura Monje Andrade,
The fall armyworm (Spodoptera frugiperda (J.E. Smith)) is an important harmful pest for corn crops in Colombia. Knowing its population’s fluctuation regarding genetically modified plants allows the implementation of monitoring plans and time-effective management actions. The objective of this study was to establish the population’s fluctuation of S. frugiperda during 2014-2016 in the hybrids 30F35R and 30F35HR (genetically modified with the Cry1F endotoxin) in El Espinal, Tolima, Colombia. Accumulations ...
Tópico(s): Viral Infectious Diseases and Gene Expression in Insects
2019 - National University of Colombia at Medellín | Revista Facultad Nacional de Agronomía Medellín
Víctor Martínez‐Agramunt, Tobias Eder, Heidar Darmandeh, Gregorio Guisado‐Barrios, Eduardo Peris,
A palladium-cornered molecular square with four pyrene-bis(imidazolylidene) bridging ligands is reported. This metallo-polygon can encapsulate C60 and C70 . The X-ray diffraction structures of the empty cage as well as the cages complexed with both fullerenes are described. The fullerene encapsulation produces perturbations in the structural parameters of the metallo-square, showing that it can adjust the shape of its cavity to the size of each fullerene.
Tópico(s): Synthesis and Properties of Aromatic Compounds
2019 - Wiley | Angewandte Chemie International Edition
Víctor Martínez‐Agramunt, Tobias Eder, Heidar Darmandeh, Gregorio Guisado‐Barrios, Eduardo Peris,
Abstract A palladium‐cornered molecular square with four pyrene‐bis(imidazolylidene) bridging ligands is reported. This metallo‐polygon can encapsulate C 60 and C 70 . The X‐ray diffraction structures of the empty cage as well as the cages complexed with both fullerenes are described. The fullerene encapsulation produces perturbations in the structural parameters of the metallo‐square, showing that it can adjust the shape of its cavity to the size of each fullerene.
Tópico(s): Magnetism in coordination complexes
2019 - Wiley | Angewandte Chemie
Produção Nacional
Revisado por pares
Caio Machado Fernandes, Leonardo X. Álvarez, Nazir Escarpini dos Santos, Adriana C. Maldonado Barrios, Eduardo A. Ponzio,
1-benzyl-4-phenyl-1H-1,2,3-triazole was prepared using an environmental friendly and facile synthetic procedure and its performance as an organic corrosion inhibitor for mild steel in 1.0 mol L−1 HCl was investigated using four different methods. An average efficiency of 81.7% was obtained with 2.13 mmol L−1 solutions of the organic compound. A new approach to classical electrochemical analyses confirms the inhibitor adsorption on the metal surface. Temperature effect studies in the oxidation inhibition ...
Tópico(s): Synthesis and Biological Evaluation
2019 - Elsevier BV | Corrosion Science
Produção Nacional
Maria Alice Franzoi, Daniela Dornelles Rosa, Facundo Zaffaroni, Gustavo Werutsky, Sérgio D. Simon, José Bines, Carlos H. Barrios, Eduardo Cronemberger, Geraldo Silva Queiroz, Vladmir Cláudio Cordeiro de Lima, Ruffo Freitas‐Júnior, José Couto, Karla Emerenciano, Heloísa Resende, Susanne Crocamo, Tomás Reinert, Brigitte Van Eyli, Yeni Nerón, V Dybal, Nicolas Lazaretti, Rita de Cassia Costamillan, Diocésio Alves Pinto de Andrade, Clarissa Mathias, Giovana Zerwes Vacaro, Giuliano Santos Borges, Alessandra Morelle, Carlos Alberto Sampaio Pereira Filho, Max S. Mano, Pedro Emanuel Rubini Liedke,
Breast cancer (BC) in young women is uncommon and tends to present with more aggressive characteristics. To better understand and characterize this scenario in Brazil through real-world data, we performed a subanalysis of AMAZONA III study (ClinicalTrials.gov identifier: NCT02663973).The AMAZONA III study (GBECAM 0115) is a prospective registry that included 2,950 women newly diagnosed with invasive BC in Brazil from January 2016 until March 2018 at 22 sites. Valid data were obtained from 2,888 patients ...
Tópico(s): BRCA gene mutations in cancer
2019 - American Society of Clinical Oncology | Journal of Global Oncology
Maximilian Böhmer, Florian Kampert, Tristan Tsai Yuan Tan, Gregorio Guisado‐Barrios, Eduardo Peris, F. Ekkehardt Hahn,
Two simple bisimidazolium salts derived from m- or p-bisimidazolebenzenes have been used as ligand precursors for the preparation of a series of heterobimetallic RhIII/AuI and IrIII/AuI complexes. All complexes have been fully characterized, and the molecular structures of selected derivatives have been determined by X-ray diffraction studies. These analyses showed that, regardless of the ligand used, the direct coordination environment of the metals is composed of identical donors (MIII: CNHC, Cbenzene, ...
Tópico(s): Synthetic Organic Chemistry Methods
2018 - American Chemical Society | Organometallics
Miryan Pinoargote, Rolando Cerda, Leida Mercado, Amílcar Aguilar, M. Barrios, Eduardo Somarriba,
This study sought to identify agroforestry systems with coffee that simultaneously generate financial profits, provide goods for family consumption, and store significant amounts of carbon in aboveground biomass. We studied 27 coffee plantations in Nicaragua, grouped in four typologies defined a priori: C1, full-sun coffee; C2, coffee, bananas and service trees; C3, coffee, bananas, service and timber trees; C4, coffee, bananas, service, timber and fruit trees. Carbon stock in aboveground biomass, ...
Tópico(s): Cocoa and Sweet Potato Agronomy
2016 - Taylor & Francis | Forests Trees and Livelihoods
Carmen Mejuto, Beatriz Royo, Gregorio Guisado‐Barrios, Eduardo Peris,
The coordination versatility of a 1,3,5-triphenylbenzene-tris-mesoionic carbene ligand is illustrated by the preparation of complexes with three different metals: rhodium, iridium and nickel. The rhodium and iridium complexes contained the [MCl(COD)] fragments, while the nickel compound contained [NiCpCl]. The preparation of the tris-MIC (MIC = mesoionic carbene) complex with three [IrCl(CO) 2 ] fragments, allowed the estimation of the Tolman electronic parameter (TEP) for the ligand, which was compared ...
Tópico(s): Asymmetric Hydrogenation and Catalysis
2015 - Beilstein Institute for the Advancement of Chemical Sciences | Beilstein Journal of Organic Chemistry
Pablo Martínez‐Legazpi, Javier Bermejo, Yolanda Benito, Raquel Yotti, Candelas Pérez del Villar, Ana González‐Mansilla, Alicia Gómez‐Barrio, Eduardo Villacorta, Pedro L. Sánchez, Francisco Fernández‐Avilés, Juan C. del Álamo,
Tópico(s): Cardiac Valve Diseases and Treatments
2014 - Elsevier BV | Journal of the American College of Cardiology
Carmen Mejuto, Gregorio Guisado‐Barrios, Eduardo Peris,
A series of novel tris-azolium salt precursors based on 1,3,5-triphenylbenzene have been prepared. These salts exhibit fluorescence emission in the 320–420 nm region. The coordination of these salts to [MCl(COD)]2 (M = Rh, Ir) was carried out in the presence of KHMDS and allowed the formation of the corresponding tris-NHC complexes of Rh and Ir in high yield. The electronic properties of the new complexes were analyzed by means of cyclic voltammetry and IR spectroscopy of the related carbonylated species. ...
Tópico(s): Asymmetric Hydrogenation and Catalysis
2014 - American Chemical Society | Organometallics
Begoña Barrios, Eduardo Colorado, Raffaella Servadei, Fernando Soria,
In this work we study the following fractional critical problemwhere Ω ⊂ R n is a regular bounded domain, λ > 0, 0 < s < 1 and n > 2s.Here (-) s denotes the fractional Laplace operator defined, up to a normalization factor, byOur main results show the existence and multiplicity of solutions to problem (P λ ) for different values of λ.The dependency on this parameter changes according to whether we consider the concave power case (0 < q < 1) or the convex power case (1 < q < 2 * s -1).These two cases will be treated separately.
Tópico(s): Fractional Differential Equations Solutions
2014 - Elsevier BV | Annales de l Institut Henri Poincaré C Analyse Non Linéaire
Begoña Barrios, Eduardo Colorado, A. de Pablo, Urko Sánchez,
We study the effect of lower order perturbations in the existence of positive solutions to the following critical elliptic problem involving the fractional Laplacian:{(−Δ)α/2u=λuq+uN+αN−α,u>0in Ω,u=0on ∂Ω, where Ω⊂RN is a smooth bounded domain, N⩾1, λ>0, 0<q<N+αN−α, 0<α<min{N,2}. For suitable conditions on α depending on q, we prove: In the case q<1, there exist at least two solutions for every 0<λ 0, at least one if λ=Λ, no solution if λ>Λ. For q=1 we show existence of at least one solution for ...
Tópico(s): Nonlinear Differential Equations Analysis
2012 - Elsevier BV | Journal of Differential Equations
Raúl Barrio, Eduardo Blanco, K Argüelles-Díaz, Jesús Manuel Fernández Oro,
The flight trajectory of a water rocket can be reasonably calculated if the magnitude of the drag coefficient is known. The experimental determination of this coefficient with enough precision is usually quite difficult, but in this paper we propose a simple free-fall experiment for undergraduate students to reasonably estimate the drag coefficient of water rockets made from plastic soft drink bottles. The experiment is performed using relatively small fall distances (only about 14 m) in addition ...
Tópico(s): Fluid dynamics and aerodynamics studies
2009 - IOP Publishing | European Journal of Physics
Joaquín Fernández, Raúl Barrio, Eduardo Blanco, Jorge Parrondo, Alfonso C. Marcos-Romero,
This article reports a work on the three-dimensional flow simulation in a centrifugal pump operating in reverse mode. The simulations were carried out with the commercial code Fluent using unsteady flow calculations together with a sliding mesh technique. Hence, it was possible to account for the effect of blade—tongue interactions on the local flow. The numerical predictions were compared with the experimentally determined performance characteristics and also with the static pressure distribution ...
Tópico(s): Vibration and Dynamic Analysis
2009 - SAGE Publishing | Proceedings of the Institution of Mechanical Engineers Part A Journal of Power and Energy
Raúl Barrio, Eduardo Blanco, Jorge Parrondo, José González, Joaquín Fernández,
A study is presented on the fluid-dynamic pulsations and the corresponding dynamic forces generated in a centrifugal pump with single suction and vaneless volute due to blade-volute interaction. Four impellers with different outlet diameters, obtained from progressive cutbacks (trimmings) of the greatest one, were successively considered in the test pump, so that the radial gap between the impeller and the volute ranged from 8.8% to 23.2% of the impeller radius. The study was based on the numerical ...
Tópico(s): Cyclone Separators and Fluid Dynamics
2008 - ASM International | Journal of Fluids Engineering
Teresa Freire, Nora Berois, Cecilia Sóñora, Mario Varangot, Enrique Barrios, Eduardo Osinaga,
Abstract The evaluation of disseminated epithelial tumor cells in patients with early stages of breast cancer has generated considerable interest because of its potential association with poor clinical outcome. Considering that O‐glycosylation pathways are frequently altered in breast cancer, we performed this work to evaluate the potential usefulness of UDP‐ N ‐acetyl‐ D ‐galactosamine:polypeptide N ‐acetylgalactosaminyltransferases (ppGalNAc‐Ts) (a family of glycosyltransferases which catalyze the ...
Tópico(s): Cancer Cells and Metastasis
2006 - Wiley | International Journal of Cancer
Antonio J. González, Domingo Hernández, Antonia de Vera, Ysamar Barrios, Eduardo Salido, Armando Torres, Nicolás Terrados,
Purpose: To determine the role of the ACE (I/D) gene polymorphism on erythropoietic response in endurance athletes after natural exposure to moderate altitude. Methods: Erythropoietic activity was measured in 63 male endurance athletes following natural exposure to moderate altitude (2200 m) during 48 h. Erythropoietin (EPO) levels and hemoglobin (Hb) concentrations were measured at baseline and 12, 24, and 48 h after reaching the set altitude. Reticulocyte counts were determined at baseline and 48 ...
Tópico(s): Erythropoietin and Anemia Treatment
2006 - Lippincott Williams & Wilkins | Medicine & Science in Sports & Exercise
Paola González Audino, Claudia Vassena, Silvia Barrios, Eduardo Zerba, María Inés Picollo,
Deltamethrin and other pyrethroids have been extensively used in Argentina since 1980, for the chemical control of Triatoma infestans Klug (Hemiptera: Reduviidae). Recently, resistance to deltamethrin was detected in field populations by the survival of bugs exposed by topical application to the diagnostic dose estimated on the CIPEIN susceptible strain. Results of the current study showed low resistant ratios (RRs) to deltamethrin for the resistant populations (RR ranged from 2.0 for San Luis colony ...
Tópico(s): Environmental Toxicology and Ecotoxicology
2004 - Instituto Oswaldo Cruz, Ministério da Saúde | Memórias do Instituto Oswaldo Cruz
Domingo Hernández, Alejandro de la Rosa, Antonio Barragán, Ysamar Barrios, Eduardo Salido, Armando Torres, Basilio Martín, Ignacio Laynez, Amelia Duque, Antonia de Vera, Vı́ctor de Lorenzo, Antonio J. González,
Tópico(s): Muscle metabolism and nutrition
2003 - Elsevier BV | Journal of the American College of Cardiology
CLAUDIA RECILLAS-GISPERT, Gabriela Ortega-Larrocea, LOURDES ARELLANES-GARCÍA, TERESA HERRERA-BARRIOS, EDUARDO SADA-DÍAZ,
Several opportunistic intraocular infections have been described in patients with the human immunodeficiency virus, among them infections caused by Mycobacterium tuberculosis. In most cases, the diagnosis is based on clinical findings. Recent reports have described the usefulness of polymerase chain reaction techniques in the diagnosis of bacterial infections.The authors observed a 29-year-old woman with acquired immune deficiency syndrome in whom unilateral chorioretinitis developed. The chorioretinitis ...
Tópico(s): Infectious Diseases and Tuberculosis
1997 - Lippincott Williams & Wilkins | Retina
Nora Berois, Patricia de Crémoux, Daniel Mazal, Adela Sica, Mabel Cedeira, Benedicta Caserta, Enrique Barrios, Eduardo Osinaga, Xavier Sastre‐Garau,
Objectives Persistent infection with specific genotypes of human papillomaviruses (HPVs) is the main cause of invasive cervical cancer (ICC). Only a few of the various HPV types account for most of the cases worldwide, and geographical differences in their distribution are evident. Data from locally prevalent genotypes are essential in view of introduction of HPV type-specific prophylactic vaccines. Methods In this work, we have investigated HPV type distribution in samples of ICC cases that occurred ...
Tópico(s): Hepatitis B Virus Studies
2013 - BMJ | International Journal of Gynecological Cancer
Silvia Barrios, Eduardo Zerba, María Inés Picollo, Paola González Audino,
Tópico(s): Bird parasitology and diseases
2009 - Springer Science+Business Media | Parasitology Research
Berenice González-Mendoza, R. López‐Callejas, Rodríguez Méndez, R. Peña‐Eguiluz, A. Mercado‐Cabrera, R. Valencia-Alvarado, Mario Betancourt-Ángeles, María de Lourdes Reyes-Frías, Daniel Reboyo-Barrios, Eduardo Chávez-Aguilar,
Purpose: Venous, neuropathic, and mixed (venous and arterial) ulcers are complex chronic wounds that have a tremendous long-term impact on the mortality, morbidity, and quality of life of patients. In this work it was evaluated the efficacy of the non-thermal helium plasma at atmospheric pressure applied in patients with this suffering. Methods: Using three elements: a RF generator, a needle-type reactor, and helium gas flow, for non-thermal plasma generation were used. The power density on the tissue ...
Tópico(s): Plasma Applications and Diagnostics
2019 - Elsevier BV | Clinical Plasma Medicine
George Kleinhans, Gregorio Guisado‐Barrios, Eduardo Peris, Daniela I. Bezuidenhout,
The preparation of a new neutral ruthenium(II) pincer complexes with formula [RuCl(CO)2(CTRZNCTRZ)] (CNC = bis(1,2,3-triazol-5-ylidene)carbazolide) is described. Access to the hydrido complex [RuH(CO)2(CTRZNCTRZ)] was attained by reaction of the pincer ligand precursor with base and with [RuCl(H)(AsPh3)3(CO)] in the presence of CO atmosphere. The meridional geometry pincer ligand in the complexes is confirmed by a single crystal X-ray diffraction study of [RuCl(CO)2(CTRZNCTRZ)]. Preliminary results of ...
Tópico(s): Cyclopropane Reaction Mechanisms
2017 - Elsevier BV | Polyhedron
N. Cuñado, Jesús Cristóbal Barrios, Eduardo San Miguel, Rafaela Amaro, Carlos Fernández, Miguel Hermida, J. L. Santos,
Tópico(s): Animal Genetics and Reproduction
2002 - Springer Science+Business Media | Genetica
Germán Vergel Rivera, Alicia Zapata Martínez, María Aida Cruz Barrios, Eduardo Vergara Fabián, Jorge L Gutiérrez Miranda, María Hernández Echenique,
Tópico(s): Public Health in Brazil
1995 - Editorial Ciencias Médicas | Revista cubana de medicina general integral
Javier Barrios-González, Eduardo José Nepomuceno Montenegro, Juan F. Martı́n,
Two methods of selecting penicillin overproducers were developed, based on the hypothesis that Penicillium chrysogenum mutants resistant to high concentrations of phenylacetic acid (PAA) could use this precursor more efficiently (and thus produce more penicillin). It was determined that 0.2% PAA was a selective concentration for pregerminated spores of P. chrysogenum P2. An alternative screening method, using young mycelia already in the production phase, was also developed. Applying the former method ...
Tópico(s): Steroid Chemistry and Biochemistry
1993 - Elsevier BV | Journal of Fermentation and Bioengineering