Julio E. Sosa, Rubén Santiago, Andres E. Redondo, Jocasta Ávila, Luiz Fernando Lepre, Margarida Costa Gomes, João M. M. Araújo, José Palomar, Ana B. Pereiro,
In recent years, the fight against climate change and the mitigation of the impact of fluorinated gases (F-gases) on the atmosphere is a global concern. Development of technologies that help to efficiently separate and recycle hydrofluorocarbons (HFCs) at the end of the refrigeration and air conditioning equipment life is a priority. The technological development is important to stimulate the F-gas capture, specifically difluoromethane (R-32) and 1,1,1,2-tetrafluoroethane (R-134a), due to their high ...
Tópico(s): Phase Equilibria and Thermodynamics
2022 - American Chemical Society | Environmental Science & Technology
Julio E. Sosa, Rubén Santiago, Daniel Hospital-Benito, Margarida Costa Gomes, João M. M. Araújo, Ana B. Pereiro, José Palomar,
The environmental impact of fluorinated gases (F-gases) necessitates the development of green technologies to mitigate them. Fluorinated ionic liquids (FIL/ILs) emerged as an alternative absorbent due to their unique and exceptional properties. In this work, a COSMO-based/Aspen Plus methodology was used to evaluate the performance of FIL/ILs as absorbents in the process scale of two F-gases: 1,1,1,2-tetrafluoroethane (R-134a) and difluoromethane (R-32). Results of the absorption column in equilibrium ...
Tópico(s): Inorganic Fluorides and Related Compounds
2020 - American Chemical Society | Environmental Science & Technology
Hugo Proença, Mark Nixon, Michele Nappi, Esam Ghaleb, Gökhan Özbulak, Hua Gao, Hazım Kemal Ekenel, Klemen Grm, Vitomir Štruc, Hailin Shi, Xiangyu Zhu, Shengcai Liao, Zhen Lei, Stan Z. Li, Weronika Gutfeter, Andrzej Pacut, Joel Brogan, Walter J. Scheirer, Ester González-Sosa, Rubén Vera-Rodríguez, Julián Fiérrez, Javier Ortega-García, Daniel Riccio, Luigi De Maio,
Performing covert biometric recognition in surveillance environments has been regarded as a grand challenge, considering the adversity of the conditions where recognition should be carried out (e.g., poor resolution, bad lighting, off-pose and partially occluded data). This special issue compiles a group of approaches to this problem.
Tópico(s): Biometric Identification and Security
2018 - Institute of Electrical and Electronics Engineers | IEEE Intelligent Systems
Ester González-Sosa, Rubén Vera-Rodríguez, Julián Fiérrez, Vishal M. Patel,
Due to the ability of millimeter waves (mmWs) to penetrate dielectric materials, such as plastic, polymer, and clothes, the mmW imaging technology has been widely used for the detection of concealed weapons and objects. The use of mmW images has also recently been proposed for biometric person recognition to overcome certain limitations in image acquisition at visible frequencies. This paper proposes a biometric person recognition system based on the shape information extracted from real mmW images. ...
Tópico(s): Video Surveillance and Tracking Methods
2017 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Information Forensics and Security
Leticia Maya, Lucía Calleros, Lourdes Francia, Martı́n Hernández, Gregorio Iraola, Yanina Panzera, Katia Sosa, Ruben Pérez,
Tópico(s): Parvovirus B19 Infection Studies
2013 - Springer Science+Business Media | Archives of Virology
Eristeo García-Márquez, Angélica Román‐Guerrero, C. Pérez‐Alonso, Francisco Cruz‐Sosa, Rubén Jiménez-Alvarado, E.J. Vernon‐Carter,
The effect of solvent and extraction temperature on the initial antioxidant activity (AA) and total phenolic content (TPC) of Muitle (Justicia spicigera) ext...
Tópico(s): Allelopathy and phytotoxic interactions
2012 - Universidad Autónoma Metropolitana | Revista Mexicana de Ingeniería Química
Angélica Román‐Guerrero, J. Orozco-Villafuerte, J.P. Pérez-Orozco, Francisco Cruz‐Sosa, Rubén Jiménez-Alvarado, E.J. Vernon‐Carter,
Mesquite gum was fractionated using hydrophobic interaction chromatography, yielding three fractions (F1, F2, F3) whose average molecular masses ranged from 1.81 × 104 to 5.23 × 105 Da; F1 had 90% polysaccharide and 1% protein contents, while F2 and F3 contained 16 and 46% of protein, respectively. Fractions' ability to form oil–water interfacial films and to stabilize orange peel–oil emulsions was evaluated. The highest interfacial viscosity (321 m Nm−1) and highest instantaneous elastic modulus (E0) = ...
Tópico(s): Polysaccharides and Plant Cell Walls
2008 - Elsevier BV | Food Hydrocolloids
Produção Nacional
Revisado por pares
Norma Angélica Santiesteban López, Julián Andrés Gómez‐Salazar, Eva M. Santos, Paulo Cezar Bastianello Campagnol, A. Teixeira, José M. Lorenzo, María Elena Sosa‐Morales, Rubén Domínguez,
Meat is a nutrient-rich matrix for human consumption. However, it is also a suitable environment for the proliferation of both spoilage and pathogenic microorganisms. The growing demand to develop healthy and nutritious meat products with low fat, low salt and reduced additives and achieving sanitary qualities has led to the replacement of the use of synthetic preservatives with natural-origin compounds. However, the reformulation process that reduces the content of several important ingredients ( ...
Tópico(s): Advanced Chemical Sensor Technologies
2022 - Multidisciplinary Digital Publishing Institute | Foods
Arnoldo López-Alvarez, Alma Laura Díaz-Pérez, Carlos Rubén Sosa-Aguirre, Lourdes Macías‐Rodríguez, Jesús Campos-Garcı́a,
Tópico(s): Fermentation and Sensory Analysis
2012 - Elsevier BV | Journal of Bioscience and Bioengineering
Jaime Saucedo-Luna, Agustín Jaime Castro‐Montoya, Mauro M. Martínez-Pacheco, Carlos Rubén Sosa-Aguirre, Jesús Campos-Garcı́a,
Bagasse of Agave tequilana (BAT) is the residual lignocellulosic waste that remains from tequila production. In this study we characterized the chemical composition of BAT, which was further saccharified and fermented to produce ethanol. BAT was constituted by cellulose (42%), hemicellulose (20%), lignin (15%), and other (23%). Saccharification of BAT was carried out at 147°C with 2% sulfuric acid for 15 min, yielding 25.8 g/l of fermentable sugars, corresponding to 36.1% of saccharificable material ( ...
Tópico(s): Enzyme Catalysis and Immobilization
2010 - Springer Science+Business Media | Journal of Industrial Microbiology & Biotechnology
Marcela Segura, Sérgio Sosa Estani, Rubén Marone, Christian T. Bautista, María A. Pando, Lindsay M. Eyzaguirre, José Luis Sánchez‐Ramos, Jean K. Carr, Silvia M. Montano, Mercedes Weissenbacher, María Mercedes Ávila,
The prevalence, incidence, risk factors, and molecular genotyping of HIV-1 infection among men who have sex with men (MSM) were assessed through a prospective cohort study. The study was conducted in Buenos Aires from February 2003 to December 2004. Sociodemographic, sexual risk behavior data, and blood samples for HIV testing were collected at baseline and at 6 and 12 months. Cox regression analysis was applied to determine risk factors associated with HIV seroconversion. HIV-positive samples were ...
Tópico(s): Syphilis Diagnosis and Treatment
2007 - Mary Ann Liebert, Inc. | AIDS Research and Human Retroviruses
Alma Laura DÃaz-Pérez, Celinda Román-Doval, César DÃaz-Pérez, Carlos Cervantes, Carlos Rubén Sosa-Aguirre, Joel E. López‐Meza, Jesús Campos-Garcı́a,
Pseudomonas aeruginosa PAO1 mutants affected in acyclic monoterpenes, n-octanol, and acetate assimilation were isolated using transposon mutagenesis. The isocitrate lyase gene (aceA) corresponding to ORF PA2634 of the PAO1 strain genome was identified in one of these mutants. The aceA gene encodes a protein that is 72% identical to the isocitrate lyase (ICL) characterized from Colwellia maris, but is less than 30% identical to their homologues from pseudomonads. The genetic arrangement of aceA suggests ...
Tópico(s): Bacterial biofilms and quorum sensing
2007 - Oxford University Press | FEMS Microbiology Letters
Jim M. Dunwell, Alastair Culham, Carol E. Carter, Carlos Rubén Sosa-Aguirre, Peter W. Goodenough,
The cupin superfamily of proteins is among the most functionally diverse of any described to date. It was named on the basis of the conserved β-barrel fold ('cupa' is the Latin term for a small barrel), and comprises both enzymatic and non-enzymatic members, which have either one or two cupin domains. Within the conserved tertiary structure, the variety of biochemical function is provided by minor variation of the residues in the active site and the identity of the bound metal ion. This review discusses ...
Tópico(s): Plant Micronutrient Interactions and Effects
2001 - Elsevier BV | Trends in Biochemical Sciences
Norma Corona de la Peña, Jorge A. Sosa‐Melgarejo, Rubén Román Ramos, José D. Méndez,
Hypercholesterolemia causes alterations in platelet function. Platelet hyperaggregation is considered a predisposing factor for atherosclerosis. In this paper, the antiaggregating effect of the polyamines putrescine, spermidine, and spermine was studied on platelets of normal and hypercholesterolemic rabbits. New Zealand rabbits were fed with a cholesterol-enriched diet for 10 weeks. Lipids and glucose were determined in serum. The assays of platelet aggregation were carried out using platelet-rich ...
Tópico(s): Cannabis and Cannabinoid Research
2000 - Elsevier BV | Archives of Medical Research
Criminology arrived in Peru by the late 1880s, and with it the promise of both scientific explanations of crime and effective policies of crime control. As in Europe, Peruvian criminologists also debated the relative importance of biological and social factors in explaining crime tendencies. This article reviews the adoption and early developments of positivist criminology in Peru. It shows that the most radical versions of biological determinism were rejected by Peruvian criminologists in favor ...
Tópico(s): Wildlife Conservation and Criminology Analyses
1998 - Librairie Droz | Crime Histoire et Sociétés
Ester González-Sosa, Rubén Vera-Rodríguez, Julián Fiérrez, Miriam Moreno‐Moreno, Javier Ortega-García,
The use of millimetre wave images has been proposed recently in the biometric field to overcome certain limitations when using images acquired at visible frequencies. Furthermore, the security community has started using millimetre wave screening scanners in order to detect concealed objects. We believe we can exploit the use of these devices by incorporating biometric functionalities. This paper proposes a biometric recognition system based on the information of the silhouette of the human body, ...
Tópico(s): Image Retrieval and Classification Techniques
2015 - Springer Nature | EURASIP Journal on Image and Video Processing
Martha E. Sosa‐Torres, Rubén A. Toscano,
The crystal and molecular structures of the title compound, [CoCl2(C10H24N4)]Cl.4H2O.0.47HCl, have been determined and establish that the trans-[CoCl2(cyclam)]+ cations crystallize as the trans-RSSR species. The Co atom occupies a crystallographic centre of symmetry and is in a tetragonally elongated octahedral coordinated array, comprising the four nitrogen atoms of the macrocycle and two Cl atoms. The chloride counterion exhibits statistical disorder, while one of the solvate water molecules also ...
Tópico(s): Magnetism in coordination complexes
1997 - Wiley | Acta Crystallographica Section C Crystal Structure Communications
Ester González-Sosa, Julián Fiérrez, Rubén Vera-Rodríguez, Fernando Alonso‐Fernandez,
The role of soft biometrics to enhance person recognition systems in unconstrained scenarios has not been extensively studied. Here, we explore the utility of the following modalities: gender, ethnicity, age, glasses, beard, and moustache. We consider two assumptions: 1) manual estimation of soft biometrics and 2) automatic estimation from two commercial off-the-shelf systems (COTS). All experiments are reported using the labeled faces in the wild (LFW) database. First, we study the discrimination ...
Tópico(s): Face and Expression Recognition
2018 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Information Forensics and Security
Alejandro Krolewiecki, Patrick J. Lammie, Julie Jacobson, Albis-Francesco Gabrielli, Bruno Levecke, M. Eugenia Socías, Luis Martín Arias, Nicanor Sosa, David Abraham, Rubén O. Cimino, Adriana Echazú, Favio Crudo, Jozef Vercruysse, Marco Albonico,
Strongyloides stercoralis infections have a worldwide distribution with a global burden in terms of prevalence and morbidity that is largely ignored. A public health response against soil-transmitted helminth (STH) infections should broaden the strategy to include S. stercoralis and overcome the epidemiological, diagnostic, and therapeutic challenges that this parasite poses in comparison to Ascaris lumbricoides, Trichuris trichiura, and hookworms. The relatively poor sensitivity of single stool ...
Tópico(s): Helminth infection and control
2013 - Public Library of Science | PLoS neglected tropical diseases
C. Bermúdez, Juan Pérez-Wulff, Gesualdo Bufalino, Cristian Sosa, Libardo Gómez, Rubén A. Quintero,
Abstract Bronchopulmonary sequestration (BPS), which can be intralobar or extralobar, is a rare developmental anomaly of the lung characterized by nonfunctional pulmonary tissue without communication with the tracheobronchial tree and with an aberrant systemic arterial blood supply. The intralobar type is typically within the pleural cavity with an arterial feeding vessel generally arising from the thoracic aorta and with venous drainage into the left atrium. The prognosis is poor in cases diagnosed ...
Tópico(s): Tracheal and airway disorders
2007 - Wiley | Ultrasound in Obstetrics and Gynecology
Iván O. Sosa, Cecilia Noguez, Rubén G. Barrera,
We have studied the optical properties of metallic nanoparticles with arbitrary shape. We performed theoretical calculations of the absorption, extinction and scattering efficiencies, which can be directly compared with experiments, using the Discrete Dipole Approximation (DDA). In this work, the main features in the optical spectra have been investigated depending of the geometry and size of the nanoparticles. The origin of the optical spectra are discussed in terms of the size, shape and material ...
Tópico(s): Nonlinear Optical Materials Studies
2003 - American Chemical Society | The Journal of Physical Chemistry B
Ester González-Sosa, Pablo Pérez, Rubén Tolosana, Redouane Kachach, Álvaro Villegas,
In this study, we focus on the egocentric segmentation of arms to improve self-perception in Augmented Virtuality (AV). The main contributions of this work are: i) a comprehensive survey of segmentation algorithms for AV; ii) an Egocentric Arm Segmentation Dataset (EgoArm), composed of more than 10, 000 images, demographically inclusive (variations of skin color, and gender), and open for research purposes. We also provide all details required for the automated generation of groundtruth and semi-synthetic ...
Tópico(s): Tactile and Sensory Interactions
2020 - Institute of Electrical and Electronics Engineers | IEEE Access
Michelle M. Haby, Leopoldo A. Sosa León, Ana Luciañez, Rubén Santiago Nicholls, Ludovic Revéiz, Meritxell Donadeu,
Background Preventive chemotherapy is a useful tool for the control of Taenia solium taeniasis and cysticercosis. The aim of this systematic review is to assess the scientific evidence concerning the effectiveness and safety of different drugs in preventive chemotherapy for T. solium taeniasis in endemic populations. Methods A systematic review was conducted of controlled and uncontrolled studies, assessing the efficacy and adverse effects (among other outcomes) of albendazole, niclosamide and/or ...
Tópico(s): Amoebic Infections and Treatments
2020 - Public Library of Science | PLoS neglected tropical diseases
Gladis L. Sosa, Nélida M. Peruchena, Rubén H. Contreras, Eduardo A. Castro,
Ab initio calculations are used to analyze the effect of C–H⋯O hydrogen bonding interactions on the C–H bond length. Methane derivatives, CH4−nXn (where n=1,2,3 for X=F and n=1 for X=NO2) are taken as proton donors and H2O as acceptor. The topological properties of electronic charge density are analyzed employing the Bader's Atoms In Molecules (AIM) theory. A good correlation between the structural parameters and the properties of charge density is found. Then, using the Natural Bond Orbitals (NBO) ...
Tópico(s): Crystal structures of chemical compounds
2002 - Elsevier BV | Journal of Molecular Structure THEOCHEM
Gladis L. Sosa, Nélida M. Peruchena, Rubén H. Contreras, Eduardo A. Castro,
A topological analysis of two model systems in which different CH…O hydrogen bonds exist is performed in order to characterize them. It is found that it is necessary to analyze the topological properties of the acceptor atom involved in the hydrogen bond since several parameters are qualitatively different in both complexes. This behaviour seems to suggest a way of identifying these bonds.
Tópico(s): Molecular Spectroscopy and Structure
1997 - Elsevier BV | Journal of Molecular Structure THEOCHEM
ELIZABETH SÁMANO DELGADO, Héctor Eduardo Martínez‐Flores, Ma. Guadalupe Garnica‐Romo, Jorge I. Aranda-Sánchez, Carlos Rubén Sosa-Aguirre, Consuelo de Jesús CORTÉS-PENAGOS, J. L. Fernández‐Muñoz,
ABSTRACT Currently, several solar dehydrator designs exist on the market, and some of these designs require expensive materials, which makes the prototype expensive and difficult to obtain for small producers. The aim of this study was to build a low-cost solar dryer with high energy efficiency based on a previous solar dryer model. The optimization of the previous solar dryer model was characterized via temperature profiles and drying kinetics to identify gaps. Theoretical and numerical modeling ...
Tópico(s): Freezing and Crystallization Processes
2012 - Wiley | Journal of Food Processing and Preservation
Rubén Reyes-Sosa, Agustín Lugo-Radillo, Lizzet Cruz-Santiago, Celia Rubí García-Cruz, Oliver Mendoza‐Cano,
Oral and topical nonsteroidal anti-inflammatory drugs (NSAIDs), analgesics and intra-articular corticosteroid injections are the recommended first line of treatment for knee osteoarthritis (OA); however, they have serious side effects. Platelet-rich plasma (PRP) has been posited as an effective and safer alternative treatment for knee OA. Hitherto, there is only one study comparing the effectiveness of PRP against an NSAID.The aim of this study was to determine the effectiveness of PRP against celecoxib ...
Tópico(s): Osteoarthritis Treatment and Mechanisms
2020 - University of South Bohemia in České Budějovice | Journal of Applied Biomedicine
А. В. Афонин, Nélida M. Peruchena, Lombardo Sosa, Rubén H. Contreras,
Tópico(s): Chemical Reaction Mechanisms
1997 - Springer Science+Business Media | Russian Chemical Bulletin
Jorge Sosa, Sandra Ramírez‐Arcos, Martha Ruben, Hui Li, Rafael Llanes, Aliña Llop, Jo‐Anne R. Dillon,
In Brief Background In many regions the susceptibility of Neisseria gonorrhoeae isolates to antimicrobial agents is rarely tested. The Gonococcal Antimicrobial Surveillance Program (GASP) in Cuba was established as part of a larger regional GASP program to facilitate the collection and reporting of antimicrobial susceptibility data for N gonorrhoeae isolates. Goal The goal was to retrospectively determine the antimicrobial susceptibility and molecular epidemiology of 91 isolates of N gonorrhoeae ...
Tópico(s): Bacterial Infections and Vaccines
2003 - Lippincott Williams & Wilkins | Sexually Transmitted Diseases
Claudio Sosa, Erica Balaguer, Justo Alonso, Ruben Panizza, Alejandro Laborde, Conrado Berrondo,
Objective This study was undertaken to evaluate whether the administration of meperidine decreases the length of labor in patients with a diagnosis of dystocia during the first stage of labor. Study design Women with term singleton pregnancies who received a diagnosis of dystocia and required an active management of labor were randomly assigned to receive either 100 mg of meperidine or placebo. The primary outcome measure was length of labor. Results Four hundred seven pregnant women were included. ...
Tópico(s): Infant Development and Preterm Care
2004 - Elsevier BV | American Journal of Obstetrics and Gynecology