René Arzuffi, Norma Robledo, Jorge Valdez, René Arzuffi, Norma Robledo, Jorge Valdez,
Antennal morphology and funicular sensilla of male and female papaya fruit fly, Toxotrypana curvicauda Gerstaecker, were studied with light microscopy and scanning electron microscopy. Antennae were 3-segmented, consisting of a scape, a pedicel, a flagellum or funiculus that bears the arista. Antennal segments of males showed a trend toward slightly greater dimensions than those of females, but the differences were not significant. Numerous microtrichia as well as trichoid, basiconic, clavate, and ...
Tópico(s): Plant and animal studies
2008 - Florida Entomological Society | Florida Entomologist
J. Antonio Aviña‐Zubieta, Griselda Galindo-Rodrı́guez, Iraida E. Robledo, Jorge Vela‐Ojeda, Manuel Vadillo-Buenfil, Alejandro Rosas-Cabral, D. Salazar-Exaire,
The purpose of this study was to compare the long-term effectiveness among danazol, corticosteroids, cytotoxics, and dapsone in the treatment of hematological manifestations of systemic lupus erythematosus (SLE). Medical charts of all patients seen at the Rheumatic Disease Unit from January to December of 1998 were reviewed. Patient characteristics, disease and treatment information were collected. The main outcome measures were the cause of and time to discontinuation of drugs used to treat hematological ...
Tópico(s): Systemic Lupus Erythematosus Research
2003 - SAGE Publishing | Lupus
JAR Robledo, Jorge Cáceres-Martı́nez, Ronald Sluys, António Figueras,
The turbellarian Urastoma cyprinae (Graff.1882) Graff.1903 was found inhabiting the mantle cavity between the lamellae of the demlbranchs of mussels Mytilus galloprovincialis Lamarck cultured in Galicia (NW Spain).Heavily infested mussels were recognized by the presence of white spots in the gills.The affected area exhibited disarrangement of the gill filaments.The space between 2 lamellae was considerably reduced and the blood sinuses were wider in the unhealthy area than in the healthy area.The ...
Tópico(s): Aquatic Invertebrate Ecology and Behavior
1994 - Inter-Research | Diseases of Aquatic Organisms
Diego Robledo, Jorge Hernández‐Urcera, Rosa Cal, Belén G. Pardo, Laura Sánchez, Paulino Martı́nez, Ana Viñas,
Abstract Background Gene expression analysis by reverse transcription quantitative PCR (qPCR) is the most widely used method for analyzing the expression of a moderate number of genes and also for the validation of microarray results. Several issues are crucial for a successful qPCR study, particularly the selection of internal reference genes for normalization and efficiency determination. There is no agreement on which method is the best to detect the most stable genes neither on how to perform ...
Tópico(s): Animal Genetics and Reproduction
2014 - BioMed Central | BMC Genomics
Elisa Lozano, Elisa Herráez, Óscar Briz, Virginia Sánchez Robledo, Jorge Hernandez-Iglesias, Ana Isabel González-Hernández, José J.G. Marı́n,
Changes in the uptake of many drugs by the target cells may dramatically affect the pharmacological response. Thus, downregulation of SLC22A1, which encodes the organic cation transporter type 1 (OCT1), may affect the response of healthy hepatocytes and liver cancer cells to cationic drugs, such as metformin and sorafenib, respectively. Moreover, the overall picture may be modified to a considerable extent by the preexistence or the appearance during the pathogenic process of genetic variants. Some ...
Tópico(s): Amino Acid Enzymes and Metabolism
2013 - Hindawi Publishing Corporation | BioMed Research International
M. de la Garza-Galván, Patricia Zambrano‐Robledo, Jorge Vázquez-Arenas, Issis C. Romero‐Ibarra, C. Ostos, José Peral, Ulises M. García-Pérez,
BiOCl/BiVO4 photocatalysts with different ratios of gold particles were synthesized by a facile method at room temperature. The gold was in situ incorporated on the BiOCl/BiVO4 powders through the chemical reduction of HAuCl4 using ascorbic acid as reducing agent. X-ray powder diffraction, scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy and UV–Vis diffuse reflectance spectroscopy were conducted to perform the textural, structural and composition characterizations ...
Tópico(s): Copper-based nanomaterials and applications
2019 - Elsevier BV | Applied Surface Science
Ioannis Konstantinidis, Pål Sætrom, Robin Mjelle, Artem Nedoluzhko, Diego Robledo, Jorge M. O. Fernandes,
The historically recent domestication of fishes has been essential to meet the protein demands of a growing human population. Selection for traits of interest during domestication is a complex process whose epigenetic basis is poorly understood. Cytosine hydroxymethylation is increasingly recognized as an important DNA modification involved in epigenetic regulation. In the present study, we investigated if hydroxymethylation plays a role in fish domestication and demonstrated for the first time ...
Tópico(s): Aquaculture disease management and microbiota
2020 - Landes Bioscience | Epigenetics
Cristina Martín-Villares, Carmen Perez Molina-Ramirez, Margarita Bartolome-Benito, Manuel Bernal‐Sprekelsen, Aranzazu Perez-Fernandez, Sara Alcantara-Armenteros, Irene Monjas‐Cánovas, Manuela Sancho-Mestre, Oscar Alemán-López, M Dolors Deola-Trasserra, Vanessa Villarraga-Cova, Azor Carreras-Alcaraz, Esther Montaner-Sala, Esther Sota-Eguizabal, Aihnoa Tolosa, Belen De la Iglesia, Rafael Garcia-Sardon, Laura González Díez, Eduardo Lehrer, F.X. Avilés-Jurado, Kiara Tudela-Cabello, Gabriel Huguet-Llull, Marta Mesalles-Ruíz, Ramon Jimenez-Montoya, Ana Isabel Navazo-Eguía, Blanca Pilar Galindo Torres, Marta Fernandez-Pello, Nuria Rodriguez-Prado, Carmen L. Ospina Salazar, Francisco Ramos, Juan Carlos Amor‐Dorado, Marta Faubel-Serra, Valery Nuñez-Carrasco, Adriana Agüero-Medina, Juan Carlos-Villatoro, Roser Lopez-Diu, Selvyn Gonzalez-Melgan, María Uzcanga-Lacabe, Marisela Cardier-Suárez, Esther Úbeda-Fernández, Miguel Ángel Alañon-Fernández, Carlos Sanchez-Herrero, Jose Antonio Municio-Martin, Luis Pascua-Gomez, Sergio Andrino-Martin, Sandra Ayala-Mejias, Bárbara Molina-Gil, Jorge De Abajo-Larriba, Zenaida Piñeiro-Aguín, Elisa Gil‐Carcedo, Javier Herrero-Agustín, Jorge Freijanes-Otero, Mario Cuetos-Azcona, Alfredo García‐Fernández, Ignacio Jiménez‐Huerta, Rosa Babarro-Fernández, Felipe Junjgohann-Jofre, Antonio Martel-Lopez, Maria Dolores Martin-Sanchez, Jesus Benitez-del Rosario, Diana Luorido, Monica Granda, Jose Miguel Tejeda, Antonio Martinez Ruiz-Coello, Antonio Almodovar-Iniesta, Jesus Bonnin, Jacobo Chao-Vietes, Estefanía Hernández‐García, Guillermo Plaza, Jose Miguel Villacampa-Auba, Alfonso Campos-Gonzalez, José Carlos Casqueiro, Lucia Baguena-Campos, Alberto Encinas-Vicente, Raul Rubio-Yanguas, Alejandro Lowy‐Benoliel, Daniel Poletti-Serafini, Juan Antonio Pasamontes-Pingarron, Miguel Aristegui-Ruiz, Monica Hernando-Cuñado, Rosalia Souviron-Encabo, Tomas Martínez‐Guirado, Mario Fernández‐Fernández, Ricardo Gonzalez-Orus, Beatriz Molina-Montes, Raquel De la Fuente-Hernandez, Jesús Crovato-Rojas, Cristian Ruminot, Daniella Laguado, Hander Acosta, Estefanía Hernández‐García, Alejandro Zuaza-Gonzalez, Carlos Domingo‐Carrasco, Cristina Valor-García, Javier Lopez-Martin, Tomas Mogollon-Cano, Carla Meler‐Claramonte, Juan Carlos Flores-Martín, Juanjo Arzok del Toro, Alfonso García-Piñero, Noelia Muñoz-Fernandez, Antonio Del Palacio, Blanca Mateos-Serrano, Isabel García-López, Laura Rodrigáñez, Paula Aragon, Teresa Rivera, Gustavo Eisenberg-Plaza, Inmaculada Fernandez-Robledo, Jorge Prada-Pendolero, Ignacio Alvarez-Alvarez, Maria Puente-Verez, Ana Quintana-Sanjuás, Pablo Parente Arias, Francisco García-Córdoba, Francisco García‐Purriños, Carmelo Morales‐Angulo, Simara Rodriguez-Rondon, Diana Lopez-Lopez, Rafael Fernández‐Liesa, Amaya Lázaro-Sánchez, I. Alonso-Alonso, Michalina Rusiecka, Rosa Delia Ramirez, Javier Vila, Angela Bellmunt-Fontanet, Victoria Montoro-Martinez, Francisco Piqueras, Vania Novoa-Morales, Gabriela Simonetti, Enrique Guillén-Lozada, María Jesús Miranda Velasco, Ignacio Alonso-Castiñeira, María Hernández, Carlota Rovira-Ramos, Juan Jose Diaz-Argüello, Yolanda Escamilla-Carpintero, Pablo Torrico-Roman, Carlos Calvo-Navarro, Ignacio Viza-Puiggros, Cristina Văduva, Juan Higuera-Lucas, José Ignacio Tato, Teresa Rivera-Rodriguez, Diego Rodriguez-Contreras, Antonio Caravaca-García, Alejandra Ayala, José Manuel Morales‐Puebla, Carlos Ruiz-Escudero, E Lozano-Reina, Juan M. Solano, Jorge Alfaro-Garcia, F. Sánchez Fernández, Luordes Montes-Jovellar, Mar Medina, Rafael Barberá, Alfonso Marco-Garrido, Isabel Cremades-Navalon, Javier García‐Callejo, Carla Bastida, Raimundo Gutiérrez-Fonseca, Jorge Prada-Pendolero, Angel Muñoz-Herrera, Marta Calvo, Carmen Rosal-Fraga, Mari Cruz Iglesias-Moreno, Jesús Gimeno‐Hernández, Cristina A. Vázquez-Romero, Fabian Alzate-Amaya, Estefanía Hernández‐García, Laura Palomino, Marta Alcaraz, Coia Romeu-Figuerola, Maria Foglia-Fernández, Cristina Dios-Loureiro, Isabel González-Guijarro, Rafael Vera-Llao, Rosa Sancho-Calvo, Jesus Jose Ramos-Fernandez, Mar Lasso-delaVega, Paula Martinez-Pascual, Silvia Dominguez-Ovejas, Rafael Vera-Llao, Eduardo Morera-Senra, Jacoba Alba-Mesquida, Alfonso Bonilla, Javier Martinez-Subias, Jesús María Martínez-Salazar, Antonio Martinez-Lapeña, Rocio Corrales-Millan, Rosario Ruiz, Nieves Mata‐Castro, Alfredo Rodríguez, Laura Gerarda Cianci-Jaimes, Enrique Zapater-Latorre, Jose Ramon Alba-Garcia, Miriam Natsuki Oishi-Konari, Beatriz Pallarés Martí, Andrea Rubio-Fernandez, Jaime Santos-Pérez, Albert Idigora-Planas, Álvaro Sánchez Barrueco, Ignacio Alcalá Rueda, Rubén Jara-Rubio, Estefanía Lozano, Isabel Tirado-Zamora, Enrique Coscaron-Blanco, Soledad Suarez-Ortega, Guillermo Gil-Grasa, Maria Jose Lavilla-Martin de Valmaseda, Jose Miguel Sebastian, Hazem Nijim, Jesus Dominguez‐Calvo, Maria José Gonzalez-Gimeno, Ana Carvajal, L. Anel, Manuel Gonzalo-Orden,
The question of an optimal strategy and outcomes in COVID-19 tracheostomy has not been answered yet. The critical focus in our case study is to evaluate the outcomes of tracheostomy on intubated COVID-19 patients.
Tópico(s): Respiratory Support and Mechanisms
2020 - Springer Science+Business Media | European Archives of Oto-Rhino-Laryngology
Eduardo Aguilera-Ruiz, Patricia Zambrano‐Robledo, Jorge Vázquez-Arenas, Brenda R. Cruz‐Ortiz, José Peral, Ulises M. García-Pérez,
Brain-like nanostructures of BiVO4 were synthesized by ultrasonic spray pyrolysis (USP) using citric acid as chelating agent at 350 °°C. Synthesis variables such as carrier gas flow, structural agent concentration and temperature were herein studied. The samples were characterized by XRD, SEM, TEM, UV–Vis DRS and N2 physisorption. Particularly, HRTEM was used to calculate the crystallite size, d-spacing and assigned plane of all BiVO4 samples. The photoactivity of the as-synthesized BiVO4 was measured ...
Tópico(s): TiO2 Photocatalysis and Solar Cells
2021 - Elsevier BV | Materials Research Bulletin
Esteban Luna-Aguilar, Alberto Cordero-Dávila, J. González‐Hernández, Juan Núñez, Víctor Hugo Cabrera, Carlos Robledo-Sánchez, Jorge Cuautle-Cortéz, María H. Pedrayes,
In the polishing process, the wear tends to be greater when the tool extends beyond the edge of the workpiece. A linear pressure distribution (between the tool and the workpiece) has been used to explain this effect, however, this model also can predict negative pressures. This could mean that material is deposited instead of being removed. We present a new pressure distribution proposal, which presents like a skin effect. This means that the pressure is significantly higher at the border points ...
Tópico(s): Advanced machining processes and optimization
2003 - SPIE | Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE
Rigoberto Juarez-Salazar, Fermín Guerrero-Sánchez, Carlos Robledo-Sánchez, Jorge González-García,
A simple camera calibration method based on the principle of phase encoding and coordinate transformation is proposed. We use a reference coordinate frame encoded as a phase distribution by multiplexing the x and y directions. From this, we suggest a phase demodulation system. The coordinate transformation induced by the imaging is exploited to estimate the intrinsic and extrinsic camera parameters by using the least-squares method. Thus, a robust and noniterative estimation scheme is obtained. ...
Tópico(s): Image Processing Techniques and Applications
2015 - Optica Publishing Group | Applied Optics
Produção Nacional
Revisado por pares
José Ignacio Robledo, Héctor Jorge Sánchez, Juan José Leani, Carlos A. Pérez,
It has been observed recently that the resonant Raman scattering (RRS) peak of an X-ray spectrum contains information about the chemical environment of the irradiated matter. This information is extracted with complex processing of the spectrum data. Principal component analysis (PCA) is a statistical multivariate technique that allows exploring the variance–covariance structure of a set of data, through a few linear combinations of the original variables. This methodology can be applied to obtain ...
Tópico(s): Spectroscopy Techniques in Biomedical and Chemical Research
2015 - American Chemical Society | Analytical Chemistry
Juan José Leani, José Ignacio Robledo, Héctor Jorge Sánchez,
This work presents an overview of a novel spectroscopic tool: Energy Dispersive Inelastic X-ray Scattering (EDIXS) spectroscopy. By the application of EDIXS, the local chemical environment of an element of interest can be characterized in a variety of experimental conditions. EDIXS makes use of core-level resonant inelastic X-ray scattering (RIXS), taking advantage of the benefits of an energy dispersive detection system and multivariate methods for the data analysis. As result, the proposed methodology ...
Tópico(s): Radiation Shielding Materials Analysis
2019 - Elsevier BV | Spectrochimica Acta Part B Atomic Spectroscopy
Sara Rodríguez‐Enríquez, Álvaro Marín‐Hernández, Juan Carlos Gallardo‐Pérez, Silvia Cecilia Pacheco-Velázquez, Javier Belmont-Díaz, Diana Xochiquetzal Robledo‐Cadena, Jorge Luis Vargas-Navarro, Norma Angélica Corona de la Peña, Emma Saavedra, Rafael Moreno‐Sánchez,
Cancer development, growth, and metastasis are highly regulated by several transcription regulators (TRs), namely transcription factors, oncogenes, tumor-suppressor genes, and protein kinases. Although TR roles in these events have been well characterized, their functions in regulating other important cancer cell processes, such as metabolism, have not been systematically examined. In this review, we describe, analyze, and strive to reconstruct the regulatory networks of several TRs acting in the ...
Tópico(s): Metabolism, Diabetes, and Cancer
2019 - Multidisciplinary Digital Publishing Institute | Cells
Álbaro Jose Nieto‐Calvache, Lina María Vergara-Galliadi, Fernando Rodríguez, Carlos A. Ordóñez, Alberto Garcı́a, María Camila López-Girón, Ramiro Manzano-Núñez, Jorge Robledo Velásquez, Juan Pablo Zebadúa Carbonell, Adriana Messa Bryon, Maria Paula Echavarría, María Fernanda Escobar, Javier Carvajal, Juan Pablo Benavides‐Calvache, Juan Manuel Burgos,
The main complication of placenta accreta spectrum (PAS) is massive bleeding. Endoarterial occlusion techniques have been incorporated into the management of this pathology. Our aim was to examine the endovascular practice patterns among PAS patients treated during a 9-year period in a low-middle income country in which an interdisciplinary group's technical skills were improved with the creation of a PAS team.A retrospective cohort study including all PAS patients treated from December 2011 to November ...
Tópico(s): Maternal and Perinatal Health Interventions
2021 - Lippincott Williams & Wilkins | Journal of Trauma and Acute Care Surgery
Walter Lugo Ruíz Castañeda, Santiago Quintero Ramírez, Jorge Robledo Velásquez,
La perspectiva sistemica ha sido aplicada extensamente al estudio de la innovacion, dada la existencia de multiples agentes heterogeneos cuya interaccion permite la generacion, difusion y uso del conocimiento. Sin embargo, tal interaccion presenta dificultades por las brechas existentes entre los agentes, siendo los intermediarios los responsables de construir puentes y facilitar la vinculacion. No obstante, analizar el impacto de los intermediarios no es facil, principalmente por el problema de ...
Tópico(s): Regional Development and Innovation
2016 - Alberto Hurtado University | Journal of technology management & innovation
Luis N. Quiroz-Robledo, Jorge Valenzuela,
We surveyed poneromorph ants of Morelos state in south-central Mexico with pitfall traps and hand collecting. In total, we collected 16 poneromorph species representing 9 genera (Anochetus, Ectatomma, Gnamptogenys, Hypoponera, Leptogenys, Odontomachus, Pachycondyla, and Patythyrea). Although all 16 species are previously known from Mexico, our records increase the number of poneromorphs known from Morelos from 5 to 18. The most commonly collected species were O. clarus, G. striatula, E. tuberculum, ...
Tópico(s): Plant and animal studies
2007 - Florida Entomological Society | Florida Entomologist
Miguel Á. García-Martínez, Dora L. Martínez-Tlapa, Gibrán Renoy Pérez‐Toledo, Luis N. Quiroz-Robledo, Jorge Valenzuela,
Tropical montane cloud forests are characterized by a persistent cloud cover at the vegetation level. In central Veracruz, Mexico, these forests are found distributed in several small fragments with differing degrees of disturbance. In this changing ecosystem, the use of indicator groups has been proposed to assess disturbance effects on biodiversity. Ants may serve as bioindicators in various contexts, as they are social insects that have a high response capacity to environmental stimuli. In this ...
Tópico(s): Insect and Pesticide Research
2016 - Florida Entomological Society | Florida Entomologist
Edsaúl Emilio Pérez-Guerrero, Laura González-López, José Francisco Muñoz‐Valle, José Clemente Vásquez-Jiménez, Melissa Ramírez-Villafaña, Esther Nérida Sánchez-Rodríguez, Sergio Gutiérrez‐Ureña, Sergio Cerpa‐Cruz, Érika Anita Aguilar-Chávez, Ernesto Germán Cardona-Muñóz, M. L. Vazquez-Villegas, Ana Míriam Saldaña-Cruz, Norma Alejandra Rodriguez-Jimenez, Nicte Selene Fajardo-Robledo, Jorge Iván Gámez-Nava,
Tópico(s): Drug Transport and Resistance Mechanisms
2018 - Springer Nature | Inflammopharmacology
Gabriel García-Rodríguez, Célida Duque-Molina, Irasema Kondo-Padilla, Christian Arturo Zaragoza-Jiménez, Vladimir Brian González-Cortés, Rocio Flores-Antonio, Tania Villa‐Reyes, Adriana Vargas-Rubalcava, Luis Ruano‐Calderón, Juan Carlos Tinoco-Fávila, Héctor Carlos Sánchez-Salazar, Rodolfo Rivas-Ruíz, Octavio Castro-Escamilla, Rosa Areli Martínez‐Gamboa, Fernanda González‐Lara, Irma López‐Martínez, Tom Chiller, Rosana Pelayo, Laura C. Bonifaz, Zoe Robledo-Aburto, Jorge Alcocer‐Varela,
Abstract Background Fungal meningitis can be associated with epidural anesthesia procedures. Fusariosis is a rare infection typically affecting immunocompromised patients and rarely causes meningitis. During 2022–2023, public health officials responded to a large outbreak of Fusarium solani meningitis associated with epidural anesthesia in Durango, Mexico. Methods The public health response and epidemiological and clinical features of patients affected by this outbreak were described. Coordinated ...
Tópico(s): Ocular Infections and Treatments
2024 - Oxford University Press | Open Forum Infectious Diseases
Jakeline Serrano‐García, Jorge Robledo Velásquez,
This article proposes a methodology to evaluate Technological Innovation Capabilities at university institutions, seeking to strengthen innovation management and advance in the integration of said institutions in the dynamics of the innovation system.The Triple Helix Model is adopted to analyze the relationships of university institutions with their surroundings.The proposal is conceptually built on a based on the perspective of resources and capabilities and on to the systemic congruence model ...
Tópico(s): Intellectual Capital and Performance Analysis
2013 - Alberto Hurtado University | Journal of technology management & innovation
Leonardo Téllez-Arriaga, Alberto Cordero-Dávila, Carlos Robledo-Sánchez, Jorge Cuautle-Cortés,
According to Preston [J. Soc. Glass Technol. 11, 214 (1927)], the wear on a glass point in the polishing process is proportional to the work given by frictional force between glass and tool. He supposed that the frictional coefficient is a constant value. To verify this hypothesis, we measured the dragging forces applied to a tool as a function of the relative speed between a rotating glass and the tool center. To reproduce these experimental results, it was necessary to propose a new model, for which ...
Tópico(s): Adhesion, Friction, and Surface Interactions
2007 - Optica Publishing Group | Applied Optics
Jorge Robledo, Cristina López G, Willmar Zapata L, Juan David Pérez,
From a Resource-Based Perspective, company competitiveness critically depends on assets accumulated by the organization. The focus of analysts often concentrates on the so-called ''innovation capacities.'' Along these lines, a main concern of theorists and practitioners of technology management, is identifying the type and level of capacity needed to support successful management systems RDI (Research, Experimental Development and Innovation). The present work aims at contributing to this issue by ...
Tópico(s): Quality and Supply Management
2010 - Universidad de Antioquia | Perfil de Coyuntura Económica
María Luisa Villalba Morales, Walter Lugo Ruíz Castañeda, Jorge Robledo Velásquez,
Social exclusion represents a major challenge to policies advocating sustainable development in the Global South. Although this is a problem not prioritized in the realms of innovation policy focused on economic growth and competitiveness, it is now widely accepted that innovation may contribute significantly to the well-being of the social excluded. However, it is debated whether the innovation system approach is capable of informing transformational innovation policies aiming at overcoming social ...
Tópico(s): Open Source Software Innovations
2023 - Elsevier BV | Research Policy
Fredy Gomez, Tuğrul Daim, Jorge Robledo,
Within the National Innovation System, universities play a key role as the main source of knowledge that supports national productivity and as a system that seeks to improve the competitiveness of firms competitiveness and to find answers concerning market needs in today's fast-changing and globalized economy.Innovation, as a source of competitiveness, is normally supported by a firm's technological capabilities: internal R&D, external collaborative agreements, and relationships with universities. ...
Tópico(s): Business, Innovation, and Economy
2014 - Alberto Hurtado University | Journal of technology management & innovation
Jorge Robledo Velásquez, Yony Fernando Ceballos,
Este trabajo busca contribuir al desarrollo de modelos de simulacion de procesos de innovacion desde la dinamica de sistemas. El caso trabajado es la introduccion de tecnologias de generacion de electricidad en una comunidad rural en una zona no interconectada de un pais en desarrollo, para asi centrar el analisis en el papel del gobierno en el proceso de innovacion. El modelo propuesto integra conceptos del marco de los medios de vida sostenibles y de la gestion tecnologica, con el fin de capturar ...
Tópico(s): Regional Development and Innovation
2008 - | Cuadernos de Administración
Jorge R. Robledo‐Ortíz, Daniel E. Ramírez‐Arreola, César Gómez, Orfil González‐Reynoso, Rubén González‐Núñez,
Adhesion of Pseudomonas putida F1 onto agave-fiber/recycled-polyethylene foamed composites was studied under different controlled conditions. The adhesion process was analyzed in batch experiments controlling factors such as pH, contact time, temperature, initial biomass concentration and ionic strength; and was verified by scanning electron microscopy (SEM). The number of adhered bacteria after the experimental time was determined by difference between concentration of suspended cells in NaCl solution ...
Tópico(s): Advanced Cellulose Research Studies
2009 - Elsevier BV | Bioresource Technology
Jorge R. Robledo‐Ortíz, Carlos A. Flores Zepeda, César Gómez, Denis Rodrigue, Rubén González‐Núñez,
In this work, a capillary rheometer coupled with a closed die was used to study the non-isothermal decomposition kinetics of azodicarbonamide (ACA) in high density polyethylene (HDPE). Samples having 0.5% ACA were studied with or without the addition of 0.1% zinc oxide (ZnO) as an activator. Using different temperature settings, the pressure related to polymer swelling and blowing gas evolution was followed as a function of time until equilibrium was reached. Via some calibrations and corrections, ...
Tópico(s): Rheology and Fluid Dynamics Studies
2008 - Elsevier BV | Polymer Testing
Aida Alejandra Pérez‐Fonseca, César Gómez, Haydeé Dávila, Rubén González‐Núñez, Jorge R. Robledo‐Ortíz, Milton Vázquez‐Lepe, Alberto Herrera‐Gómez,
Composites of high-density polyethylene and agave fibers coated with chitosan were used as adsorbent for Cr(VI). The adsorptions were made in batch and continuous systems. Different kinetic models were used to characterize the batch adsorption and to determine the adsorption capacity of the compound. To test the composite regeneration/reuse capability, the chromium content in the composite material was desorbed using different acids. The coated composites were characterized by scanning electron ...
Tópico(s): Advanced Cellulose Research Studies
2011 - American Chemical Society | Industrial & Engineering Chemistry Research
Jorge R. Robledo‐Ortíz, Daniel E. Ramírez‐Arreola, Aida Alejandra Pérez‐Fonseca, César Gómez, Orfil González‐Reynoso, J. Ramos-Quirarte, Rubén González‐Núñez,
Benzene, toluene, and o-xylene (BTX) degradation by immobilized Pseudomonas putida F1 of postconsumer agave-fiber/polymer foamed-composites (AFPFC) and suspended cultures was studied under controlled conditions. Analyses using FTIR-ATR and SEM showed that P. putida F1 adhered onto the composite surface and developed a biofilm. In this sense, the AFPFC were successfully used as a support for bacterial immobilization. Both systems, immobilized and suspended cells of P. putida F1, were able to completely ...
Tópico(s): Electrospun Nanofibers in Biomedical Applications
2011 - Elsevier BV | International Biodeterioration & Biodegradation