Ángel Josabad Alonso‐Castro, Roberto Serrano‐Vega, Salud Pérez Gutiérrez, Mario Alberto Isiordia‐Espinoza, César R. Solorio‐Alvarado,
This study evaluated the inhibitory effect of myristic acid (MA) on models of inflammation and nociception. The in vitro anti-inflammatory activities of MA were assessed on LPS-stimulated macrophages, membrane stabilization assay, and inhibition of protein denaturation, whereas the inhibitory activity of MA on in vivo inflammation was assessed on TPA-induced ear edema using acute and chronic assays in mice. The inhibitory effect of MA on nociception was assessed using three in vivo models. MA exerted ...
Tópico(s): Pain Mechanisms and Treatments
2021 - Wiley | Journal of Food Biochemistry
Antonio Juárez‐Maldonado, Hortensia Ortega‐Ortíz, Gregorio Cadenas‐Pliego, Jesús Valdés-Reyna, José Manuel Pinedo-Espinoza, César Uriel López-Palestina, Alma Delia Hernández-Fuentes,
Moringa oleifera Lam is a plant that has recently gained importance as a food because of its nutritional value and bioactive compound content and because practically all the organs are usable. The use of nanoparticles has appeared as an alternative to increase bioactive compounds in plants. The goal of this work was to determine if the application of copper nanoparticles would increase the content of bioactive compounds and antioxidant capacity in M. oleifera. Copper (Cu) nanoparticles were applied ...
Tópico(s): Medicinal Plant Research
2018 - Multidisciplinary Digital Publishing Institute | Agronomy
José Manuel Pinedo-Espinoza, César Leobardo Aguirre-Mancilla, RUBN JIMNEZALVARADO, JUAN RAYAPREZ, Gabriel Iturriaga de la Fuente, JUAN RAMREZPIMENTEL, ALMA HERNNDEZFUENTES,
Opuntia spp. is easily adaptable to arid and semiarid climates, and represents a valuable alternative for the agricultural development in dry regions. Twelve accessions of Opuntia spp. fruits were characterized to know the evolution of their bioactive compounds concentration such as phenolics, flavonoids and pigments (Isobetanins, betanins, indicaxanthins and total betalains) during their ripening process. DPPH and ABTS radical scavenging capacity were determined and correlated with pigments and ...
Tópico(s): Botanical Research and Applications
2017 - United Arab Emirates University | Emirates Journal of Food and Agriculture
Fernando Poblete, Pierrick Roperch, F. Hervé, Marc Diraison, Mauricio Espinoza, César Arriagada,
The Magallanes fold and thrust belt (FTB) presents a large-scale curvature from N-S oriented structures north of 52°S to nearly E-W in Tierra del Fuego Island. We present a paleomagnetic and anisotropy of magnetic susceptibility (AMS) study from 85 sites sampled in Cretaceous to Miocene marine sediments. Magnetic susceptibility is lower than 0.0005 SI for 76 sites and mainly controlled by paramagnetic minerals. AMS results indicate that the sedimentary fabric is preserved in the undeformed areas of ...
Tópico(s): Geology and Paleoclimatology Research
2014 - Wiley | Tectonics
Charles Huamaní, Franco Romaní, Gregorio González‐Alcaide, Miluska O. Mejía, José Manuel Ramos, Manuel Ignacio Martínez Espinoza, César Cabezas,
Objectives: Evaluate the production and the research collaborative network on Leishmaniasis in South America. Methods: A bibliometric research was carried out using SCOPUS database. The analysis unit was original research articles published from 2000 to 2011, that dealt with leishmaniasis and that included at least one South American author. The following items were obtained for each article: journal name, language, year of publication, number of authors, institutions, countries, and others variables. ...
Tópico(s): Research on Leishmaniasis Studies
2014 - UNIVERSIDADE DE SÃO PAULO | Revista do Instituto de Medicina Tropical de São Paulo
James T. Ketchum, Alex Hearn, A. Peter Klimley, Eduardo Espinoza, César Peñaherrera, John L. Largier,
Tópico(s): Marine and fisheries research
2014 - Springer Science+Business Media | Marine Biology
Alex Hearn, Jonathan R. Green, Eduardo Espinoza, César Peñaherrera, David Acuña, A. Peter Klimley,
Attachment of towed, floating satellite tags to large marine organisms has provided scientists with a wealth of information on the movements of these species. These tags generally are not programmed to detach at a particular time, yet are often prone to detachment by natural means after only a few days or weeks. It is important to be able to distinguish between the tracks provided by a detached, floating tag, and one that is attached to the subject. To this end, we placed three SPOT-5 and one SPLASH ...
Tópico(s): Fish Ecology and Management Studies
2013 - BioMed Central | Animal Biotelemetry
Alejandro Madrid, Luis Espinoza, César González, Marco Mellado, Joan Villena, Rocío Santander, Viviana Silva, Iván Montenegro,
Psoralea glandulosa L. (Fabaceae) is a medicinal resinous shrub used in Chilean folk medicine as antiseptic in treatment of infections and skin diseases caused by bacteria and fungus.To evaluate the in vitro antifungal activity of the resin and the active components from P. glandulosa against clinical yeast isolates.Active compounds were obtained of the resinous exudate from aerial parts of P. glandulosa. Eight species of yeast were exposed to the resin and two major compounds. Minimum inhibitory ...
Tópico(s): Synthesis of Organic Compounds
2012 - Elsevier BV | Journal of Ethnopharmacology
Christian A. Rojas, José Rodríguez, Felipe Villarroel, José Espinoza, César Silva, Mauricio Trincado,
Finite control set model predictive control is an emerging alternative in the control of power converters and drives. The method allows flexible control schemes with fast dynamics. However, the standard formulation of this type of controllers is based on a minimization of a single cost function. This optimization method requires weighting factors that depend on the system parameters and operating point. The calculation of these factors is achieved through a nontrivial process. In this paper, a predictive ...
Tópico(s): Microgrid Control and Optimization
2012 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Industrial Electronics
Alex Hearn, James T. Ketchum, A. Peter Klimley, Eduardo Espinoza, César Peñaherrera,
Are pelagic species such as sharks and tuna distributed homogenously or heterogeneously in the oceans? Large assemblages of these species have been observed at seamounts and offshore islands in the eastern tropical Pacific, which are considered hotspots of pelagic biodiversity. Is the species distribution uniform at these hotspots or do species aggregate at a finer spatial scale at these sites? We employed three techniques to demonstrate that the aggregations of scalloped hammerhead sharks, Sphyrna ...
Tópico(s): Fish Ecology and Management Studies
2010 - Springer Science+Business Media | Marine Biology
Natassia Camacho, Carlos Espinoza, César Rodríguez, Evelyn Rodríguez,
To assess the prevalence of enterotoxigenic Clostridium perfringens among adults suffering from antibiotic-associated diarrhoea in a Costa Rican hospital, faecal samples were analysed from 104 patients by a cultivation approach. The 29 strains obtained, which accounted for an isolation frequency of 28 %, were genotyped and investigated with regard to their in vitro susceptibility to penicillin, imipenem, cefotaxime, chloramphenicol and metronidazole using an agar-dilution method. A multiplex PCR for ...
Tópico(s): Gut microbiota and health
2008 - Microbiology Society | Journal of Medical Microbiology
Hiroshi Naruse, Hideki Uehara, Taishi Deguchi, Kazuhiko Fujihashi, Masatoshi ONISHI, Raúl Espinoza, Cesar Guzman, Cesar Pardo, Cesar Ortega, Manuel Pinto,
As the first step in investigating the possibility of using a distributed fibre optic strain sensing system to detect changes in the state of an underground mine resulting from mining activities, we constructed an underground mine monitoring system based on a Brillouin optical time domain reflectometer (BOTDR) system in the El Teniente mine and conducted a field trial. This paper describes the structure of and mining processes in the mine, outlines the underground mine monitoring system that we developed ...
Tópico(s): Mineral Processing and Grinding
2007 - IOP Publishing | Measurement Science and Technology
R. Matesanz, Carlos Soratti, Ma Dolores Pérez-Rosales,
... Nicaragua), Cesar Jeremías Cuero Zambrano (Panama), Hugo A. Espinoza (Paraguay), Cesar Augusto Flower Peroné (Peru), Ana Franca (Portugal), Eduardo ...
2015 - Wolters Kluwer | Transplantation
Yeney Lauzurique, L. Carolina Espinoza, César Huiliñir, Verónica García, Ricardo Salazar,
Winery wastewater represents the largest waste stream in the wine industry. This deals with the mineralization of the organic matter present in winery wastewater using anodic oxidation and two types of anodes—namely, a boron-doped diamond electrode (BDD) and two mixed metal oxides (MMO), one with the nominal composition Ti/Ru0.3Ti0.7O2 and the other with Ti/Ir0.45Ta0.55O2. To conduct the study, the variability of different quality parameters for winery wastewater from the Chilean industry was measured ...
Tópico(s): Water Quality Monitoring and Analysis
2022 - Multidisciplinary Digital Publishing Institute | Water
Isaac González-Torres, H. Miranda, José Espinoza, César‐Fernando Méndez‐Barrios, Mario González,
In this work, a feedback linearization controller together with a gain scheduling function is proposed in order to control a high-voltage direct-current transmission system (VSC-HVDC), composed by two three-phase three-level neutral point clamped converters. The described dq0 model has the advantage of simplifying the mathematical analysis and does not disregard the zero-dynamics, against other reported solutions. In addition, based on the input-output linearization a direct current control (DCC) ...
Tópico(s): Advanced DC-DC Converters
2018 - Elsevier BV | Electric Power Systems Research
Alan Couttolenc, Ángel Díaz‐Porras, César Espinoza, Manuel E. Medina, Ángel Trigos,
Abstract In this work, the experimental and theoretical study on the primary and secondary antioxidant activities of three hydroxy‐4‐methylcoumarins were carried out. According to the experimental results obtained in the TEAC test employing ABTS, DPPH and galvinoxyl radicals, coumarin with the most important radical scavenging activity was 7,8‐dihydroxy‐4‐methylcoumarin (HMD), even observing a radical scavenging activity greater than that demonstrated by the Trolox antioxidant. The theoretical results ...
Tópico(s): Antioxidant Activity and Oxidative Stress
2019 - Wiley | Journal of Physical Organic Chemistry
Rodrigo Núñez‐Cortés, César Espinoza-Ordóñez, Paula A. Pino, Giselle Horment-Lara, Sofía Pérez‐Alenda, Carlos Cruz‐Montecinos,
Patients undergoing carpal tunnel release surgery may continue to experience pain despite the intervention. This symptom may be modulated by psychosocial factors including depression, catastrophic thinking, and kinesiophobia. Pain neuroscience education (PNE) has been found to be effective when combined with therapeutic exercise in patients with chronic pain, but this strategy has not been evaluated in patients with persistent hand pain. The findings of this study indicate that a single preoperative ...
Tópico(s): Orthopedic Surgery and Rehabilitation
2019 - Elsevier BV | Medical Hypotheses
А. В. Шнырева, A. A. Shnyreva, César Espinoza, José M. Padrón, Ángel Trigos,
We analyzed the antiproliferative activity of 6 medicinal wood-destroying mushrooms (Fomes fomentarius, Fomitopsis pinicola, Trametes versicolor, Trichaptum biforme, Inonotus obliquus, and Coniophora puteana) that are common in deciduous and mixed coniferous forests in Central Russia. Morphological identification of strains collected from the wild was confirmed based on ribosomal DNA internal transcribed spacer phylogenetic analysis. We observed cytotoxic and cell growth-inhibitory effects of hot ...
Tópico(s): Medicinal Plants and Bioactive Compounds
2018 - Begell House | International journal of medicinal mushrooms
Sandra Bautista, Andrea Espinoza, Paulo César Narváez Rincón, Maurício Camargo, Laure Morel,
The issue of sustainability assessment of biodiesel production has increasingly gained importance due to the interest of governments in drawing up sovereignty strategies, to diversify their energy matrix and to determine the impact of biofuels production. In this context, this work proposes a system dynamics model to assess biodiesel production in a specific context. A System Dynamics model was developed and applied to assess the sustainability of the conditions in the baseline scenario of biodiesel ...
Tópico(s): Biofuel production and bioconversion
2018 - Elsevier BV | Journal of Cleaner Production
César Espinoza, Ángel Trigos, Manuel E. Medina,
The photosensitizer ability of phenalenone was studied in aqueous and lipid media through the single electron transfer reactions, employing the density functional theory. Although phenalenone is a well-known photosensitizer and is widely used as an (1)O2 reference sensitizer, little is known about the reaction mechanism involved. In this study we carried out a single electron transfer reaction between the basal, excited, oxidized and reduced state of phenalenone with oxygen molecules such as (3)O2 ...
Tópico(s): Photochemistry and Electron Transfer Studies
2016 - American Chemical Society | The Journal of Physical Chemistry A
Alberto J. Martín‐Rodríguez, Fernando Reyes, Jesús Martı́n, Juan Pérez-Yépez, Milagros León‐Barrios, Alan Couttolenc, César Espinoza, Ángel Trigos, Victor S. Martı́n, Manuel Norte, José J. Fernández,
In our search for quorum-sensing (QS) disrupting molecules, 75 fungal isolates were recovered from reef organisms (endophytes), saline lakes and mangrove rhizosphere. Their QS inhibitory activity was evaluated in Chromobacterium violaceum CVO26. Four strains of endophytic fungi stood out for their potent activity at concentrations from 500 to 50 μg mL−1. The molecular characterization, based on the internal transcribed spacer (ITS) region sequences (ITS1, 5.8S and ITS2) between the rRNA of 18S and 28S, ...
Tópico(s): Marine Sponges and Natural Products
2014 - Multidisciplinary Digital Publishing Institute | Marine Drugs
Ángel Trigos, Guillermo Mendoza, César Espinoza, Alejandro Salinas, José J. Fernández, Manuel Norte,
Macrosporin, a bioactive metabolite produced by a plant-pathogenic fungus Stemphylium lycopersici, was found to be a non-host selective toxin which plays a part in leaf necrosis, a disease caused by this fungus. Here, we discuss the role of this metabolite in necrotic spots, through the direct inoculation of the midribs of the leaves of a natural host, as well as its ability to generate active oxygen species, through the process of photosensitizing oxygen.
Tópico(s): Fungal Plant Pathogen Control
2011 - Elsevier BV | Phytochemistry Letters
Eduardo Maurelia, José Espinoza, César Silva, Christian A. Rojas, Pedro Melín, Eduardo Espinosa,
The control strategies that use modulation techniques have great acceptance in the current control of static power converters. Indeed, they offer a wide variety of alternatives to address the steady-state characteristics required by the system. Nevertheless, its computation and modulation delay negatively affects its dynamic performance. In order to improve the time response of the system, the modulator is avoided and the strategies of direct choice of the switching state have been presented. They ...
Tópico(s): Microgrid Control and Optimization
2015 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Industrial Informatics
Alan Couttolenc, César Espinoza, José J. Fernández, Manuel Norte, Gabriela B. Plata, José M. Padrón, А. В. Шнырева, Ángel Trigos,
It is well known that marine fungi are an excellent source of biologically active secondary metabolites, and by 2011, it was reported that over 400 bioactive metabolites were derived from marine fungi.This study establishes the basis for future research on antiproliferative compounds of marine endophytes inhabited in the Veracruz Reef System.Isolation of the 34 fungal strains was carried out by microbiological method from samples of sponges, corals, and other biological material from the Veracruz ...
Tópico(s): Fungal Biology and Applications
2016 - Taylor & Francis | Pharmaceutical Biology
Guillermo Mendoza, Jorge Suárez-Medellín, César Espinoza, Ángel Ramos-Ligonio, José J. Fernández, Manuel Norte, Ángel Trigos,
Various species of the genus Ganoderma have been used for centuries according to oriental tradition as a source of medicines and nutrients. A chemical study of the fruiting bodies and mycelial culture of G. oerstedii was carried out with the idea of isolating and characterizing active natural components present to make use of their potential pharmaceutical application in Mexico. The fruiting bodies and mycelial culture of G. oesrtedii were lyophylized and extracted one after the other with hexane, ...
Tópico(s): Medicinal plant effects and applications
2015 - Begell House | International journal of medicinal mushrooms
Maricela Martínez Jiménez, Selenia Miranda Bahena, César Espinoza, Ángel Trigos,
Tópico(s): Plant Pathogens and Fungal Diseases
2009 - Springer Science+Business Media | Mycopathologia
Andrea Teresa Espinoza Pérez, Paulo César Narváez Rincón, Maurício Camargo, Miguel Domingo Alfaro Marchant,
The sourcing of renewable bio-resources and their conversion through novel biorefinery technology is being supported by several initiatives and policies worldwide involving the development of a circular bioeconomy. However, further questions remain unanswered such as how the strategic planning of new bio-based supply chains could contribute to sustainability targets given the common oversight for the social dimension in decision-making levels of biorefinery supply chains. Based on a systematic literature ...
Tópico(s): Forest Biomass Utilization and Management
2019 - Elsevier BV | Journal of Cleaner Production
José Ramiro Espinoza-Zamora, César Miguel Portilla-Espinosa, J Labardini-Méndez, Cervera Eduardo, Ruben Niesvisky, Luis F. Oñate–Ocaña,
Tópico(s): Amyloidosis: Diagnosis, Treatment, Outcomes
2015 - Springer Science+Business Media | Annals of Hematology
Thalía Ramírez-Reyes, Mauricio Luna‐Rodríguez, Juan Carlos Noa-Carrazana, Francisco Dı́az-Fleischer, Lázaro Rafael Sánchez‐Velásquez, Norma Flores‐Estévez,
... Dr Ángel Trigos Landa, Dr Pablo Octavio, Dr César Espinoza and Biologist Rogelio Lara for their assistance in ...
Tópico(s): Pharmacological Effects of Natural Compounds
2014 - Taylor & Francis | Chemistry and Ecology
César Isaías Espinoza-Abundis, Carlos Andrés Soltero-Sánchez, Evelyn Romero-Borbón, Jesús Córdova,
Cellulase and xylanase have been widely studied for bioconversion processes and applied in various industries. The high cost of these enzymes remains to be the major bottleneck for large-scale commercial application of lignocellulosic biorefinery. The use of agroindustrial residues and weeds as fermentation substrates is an important strategy to increase cellulolytic enzymes production and reduce costs. Penicillium crustosum was newly isolated and selected to study its enzyme production during solid- ...
Tópico(s): Microbial Metabolic Engineering and Bioproduction
2023 - Multidisciplinary Digital Publishing Institute | Fermentation