Arthur J. Wise, Rod J. Rohrich,
... Santamaría, Alida M.D.; Romero, Tomas M.D.; Calderón, Diego Fernando M.V. Author Information
Tópico(s): Organ and Tissue Transplantation Research
2002 - Lippincott Williams & Wilkins | Plastic & Reconstructive Surgery
Handwritten copy of a report to the king of Spain, by a silver refiner, concerning the discovery and history of the Potosí silver mines. The text discusses production ...
1626 - Gale Group | World Scholar Latin America
Josep Gustems Carnicer, Caterina Calderón, Diego Calderón-Garrido,
University students experience stress, and how they cope with this stress affects their academic achievement. This study examined stress in teacher education students and had three objectives: to describe different degrees of stress and coping styles; to study the relationship between stress, coping strategies and academic achievement; and to examine whether increased age can moderate the effects of stress on academic achievement in 334 university-students. There were three main findings: many students ...
Tópico(s): Resilience and Mental Health
2019 - Taylor & Francis | European Journal of Teacher Education
Handwritten copy of a report to the king of Spain, by a silver refiner, concerning the discovery and history of the Potosí silver mines. The text discusses production ...
1626 - Gale Group | World Scholar Latin America
Josep Gustems Carnicer, Caterina Calderón, Diego Calderón-Garrido, Carolina Martín Piñol,
Academic performance is a fundamental factor in the quality of higher education, but there are no conclusive results regarding how certain variables affect it. Some studies find differences attributable to gender, age, or coping strategies, but others conclude that they are insignificant. This article seeks to deepen about how these variables influence the performance of trainee primary-school teachers. It analyses academic progress in a sample of 136 students and the effect of gender, age and coping ...
Tópico(s): Teacher Professional Development and Motivation
2020 - Hipatia Press | International Journal of Educational Psychology
Giles Smith, Andrew Robson, Anthony Thornton, Janice Turner, Amanda Andrews, Christina Hardyment, Christopher Granville, Richard 'shostakovich' Morrison, Tom Chaplin, Jim Lynch, Richard Whitehead, Matthew Syed, Bel Mooney, Catherine Riley, Andrew Pierce, Zadie Smith, Linda Woolf, Robyn Rosen, Alice Miles Politics for Humans, Malcolm McDowell, Greg Hurst Political Correspondent, Jane MacQuitty, Rory Bremner, Simon Barnes, Tim De Lisle, Nicholas 'Mozart' Kenyon, Simon Hills, Devika Bhat, Michael Owen, Paul Hoggart, Marianne Majerus, David Rose, Richard Thomas, Sheron Boyle, Clare Lazaro, Robin Allison Smith, Tony Turnbull, Philip Howard, Katie Scott, Carol Midgley, Lee Child, Christine Seib, Barry Goodchild, David Chater, Kate Wighton, Suna Erdem, Rachel Campbell-Johnston, James Bone, James Ducker, Dominic Wells, Clive Davis, Richard Hobson One-Day Cricket Correspondent, Sarah Travis, Richard Irving, Gabrielle Starkey, Juan Diego Florez, Bob Stanley, Will Pavia, Graham Stewart, Mike Aston, Wendy Ide, James Hider, Jeremy Whittle, Olga Moroni, Chris Carr, Philip Webster, Michael Evans and Tim Albone, Geoff Brown, Lucy Bannerman, John Halsall, Giles Coren, Liz Haigh, Jonathan Glynn-Smith, Vivienne Parry, Pat Gibson, Nancy Durrant, John Clarke, James Doran Wall Street Correspondent, Debra Craine, Diarmuid Gavin, Jennie Dowling, Mike Pattenden, John Sutherland, Tom Charity, Allan Simmons, Norman Harris, Dr Jane Collins, Tim Reid, Jeanette Winterson, Dalya Alberge Arts Correspondent, Jane Clarke, Tom Gatti, Candida Crewe, Jo Morris, Alan Hamilton, David Sharrock Ireland Correspondent, Stephen Farrell, Peter Millar, Jenny MacArthur, Michael Tillotson, Graham Otway, Karen Parry, Anatole Kaletsky, Stuart McGurk, Rhys Blakely, Malika Browne, Charles Bremner, Stephen Oxenbury, Ron Lewis, Liz Chong, Trevor James, Lucy Sweeney, Tim Teeman, Hugo Rifkind, Derwent May, Kate Muir, Sarah Hend, Nigel Hawkes Heath Editor, Andy Lowe, Peter Gibbons, Keith Hopcroft, Gp, Julie Powell, David Rowan, Ed Potton, Jerome Burne, Gary Duncan Economics Editor, Oliver Kay, Sarah Hand, Stephen Anderton, Amber Cowan, Sarah Vine, Mark Atherton, Neil Harman, Rick Broadbent, Gabriel Rozenberg, Jonathan Clayton and Gary Duncan, Ian McKellen, David Lawrenson, Antonia Senior Personal Finance Editor, Pete Paphides, Nikolaj Znaider, David Baddiel, Ann Treneman, ED Potton, Simon de Bruxelles, Rob Wright, Geoffrey Dean, Tony Halpin and David Rose, Jane Fearnley-Whittingstall, Christina Koning, Magnus Grimond, Celia Brayfield, Neil Harman Tennis Correspondent, David Powell Athletics Correspondent, Ayaan Hirsi Ali, Raymond Keene, Lucia Adams, NF, Adam Sage, Kate Saunders, Matt Dickinson, Richard Brass, Rebecca O'Connor, Amanda Bellan, Gordon Ramsay, Designer Rugs, Jan Rowell, Sean O'Neill, Paul Simons and Fran Yeoman, Liz Gill, Rosemary Bennett Deputy Political Editor, Roger Butterworth, Nigel Hawkes, Jeremy Page, Neville Scott, Zoë Strimpel, Andrew G. Marshall, Peta Bee, Fran Yeoman, Stephen Plant, Dr. A. R. Stanford, Cathy Harris, Chris Campling, Patrick Hosking, Judy Huckle, Erica Wagner, Roger Boyes, Marcel Berlins, Chris Moneymaker, Joe Pierson, David Mattin, Domini Wells, Peter Dixon, Nick Hasell, Jullan Evans, Graham Searjeant Personal Investor, Margaret Reynolds, Nell Fisher, Kevin Maher, Julian Muscat, Paul Simons, John Wright, TG, Nicholas Clee, Nigel Kendall, Gerard Baker US Editor, John Goodbody, Nick Szczepanik, Joanna Pitman, Sir Robert Andrew, Robert Crampton, Alex O'Connell, Ian Johns, Katherine Lambert, Dominic Maxwell, Jane Collins, Matthew Parris, Virginia Blackburn, Mike Rosewell, Amanda Craig, George Caulkin, Tim Wapshott, Rebecca Ley, Howard Swains, Michael Austin, Martin O'neill, Alan Lee, Iain Finlayson, Tina Gaudon, Caitlin Moran, Neil Fisher, Andrew Ellson, Josh Ball, Helen Pridham, Mike Collins, Richard Beeston Diplomatic Editor, Jacqui Goddard, Graham Searjeant, John Naish, Rory MacLean, Daniel McGroy, Martin Waller, Loyalty Driven, Gary Duncan and Gabriel Rozenberg, Mark Henderson, James Jackson, Ian Broadhead, Sarah Butler, Naomi Caine, Benedict Nightingale, David Boswell, Brad Gilbert, Anna Shepard, Tahir Shah, Louise Cohen, Lynda Leibrock, Sam Coates Political Correspondent, Jill Crawshaw, Stephen Dalton, Angus Batey, Leo Lewis, Alyson Rudd, Richard Morrison, Tom Chesshyre, James Christopher, Simon Crompton, RM, Lisa Tuttle, Alan Jackson, Owen Slot, Cath Urquhart Travel Editor, Kim Newman, Conal Gregory, Will Hide, Daphne Lockyer, Peter Klinger, Don Latham, Joe Bolger, Ben Summerskill Chief Executive, Jayne Dowle,
... home the clowns - Mexico is set to speak Calderon Obrador Outcome of poll hinges on the 'Yanqui ...
2006 - Gale Group | TDA
Julian D. Colorado, Francisco Calderón, Diego Méndez, E. Petró, Juan P. Rojas, Edgar S. Correa, Iván F. Mondragón, Maria Camila Rebolledo, Andrés Jaramillo-Botero,
Traditional methods to measure spatio-temporal variations in biomass rely on a labor-intensive destructive sampling of the crop. In this paper, we present a high-throughput phenotyping approach for the estimation of Above-Ground Biomass Dynamics (AGBD) using an unmanned aerial system. Multispectral imagery was acquired and processed by using the proposed segmentation method called GFKuts, that optimally labels the plot canopy based on a Gaussian mixture model, a Montecarlo based K-means, and a guided ...
Tópico(s): Smart Agriculture and AI
2020 - Public Library of Science | PLoS ONE
Antonio Calderón, Diego Martínez de Ojeda, Peter A. Hastie,
There is enough quantity of comparative studies about pedagogical models in physical education, which use pre or quasi experimental designs.However, there are no so many of them which use some right typologies for these designs.The purpose of this paper was to compare the students and teachers' perceptions after practice with different pedagogical models (Sport Education and Traditional Style).It was used a simple crossover with randomized groups design, in which it was applied the two levels of ...
Tópico(s): Inclusion and Disability in Education and Sport
2013 - Ramón Cantó Alcaraz | RICYDE Revista Internacional de Ciencias del Deporte
Carmen M. Pérez-Delgado, Margarita García‐Calderón, Diego H. Sánchez, Michael K. Udvardi, Joachim Kopka, Antonio J. Márquez, Marco Betti,
The transcriptomic and metabolic consequences of the lack of plastidic glutamine (Gln) synthetase in the model legume Lotus japonicus were investigated. Wild-type and mutant plants lacking the plastidic isoform of Gln synthetase were grown in conditions that suppress photorespiration and then transferred for different lengths of time to photorespiratory conditions. Transcript and metabolite levels were determined at the different time points considered. Under photorespiratory active conditions, the ...
Tópico(s): Plant Molecular Biology Research
2013 - Oxford University Press | PLANT PHYSIOLOGY
César Zúñiga Loyola, Federico Tasca, Sebastián Calderón, Diego Farías, Francisco J. Recio, José H. Zagal,
The electrocatalytic activity of metal phthalocyanines is controlled by their coordination chemistry and their ability to bind the reacting molecules as extra-planar ligands. This chemistry is controlled by the nature of both the metal and the ligand, the latter affecting the electron density located on the metal, which is the active site. In this work we have examined the electrocatalytic activity of several Co phthalocyanines having electron-donating or electron-withdrawing substituents on the ...
Tópico(s): Electrocatalysts for Energy Conversion
2015 - Elsevier BV | Journal of Electroanalytical Chemistry
Antonio Calderón, Diego Martínez de Ojeda, Juan José Valverde, Antonio Mendez‐Giménez,
El potencial de la docencia compartida (o co-ensenanza) como estrategia que facilite la creacion de entornos de aprendizaje efectivos, es aun desconocido. En este estudio se investiga por ello su efecto sobre una variable contextual, que puede condicionar la consecucion de los objetivos de aprendizaje (Clima Social Aula), implementando el modelo de Educacion Deportiva. Se utilizo para ello un diseno cuasi-experimental con medidas pre y post intervencion que conto con 112 estudiantes de 3°, 4°, 5° ...
Tópico(s): Educational Practices and Policies
2016 - Ramón Cantó Alcaraz | RICYDE Revista Internacional de Ciencias del Deporte
Raúl Bernal-Reyes, Graciela Castro‐Narro, R. Malé-Velázquez, Ramón Carmona-Sánchez, M.S. González-Huezo, I. García-Juárez, Norberto C. Chávez‐Tapia, C. Aguilar-Salinas, I. Aiza-Haddad, M.A. Ballesteros-Amozurrutia, Francisco Bosques‐Padilla, M. Castillo-Barradas, J.A. Chávez-Barrera, L.E. Cisneros-Garza, J. Flores-Calderón, Diego García‐Compeán, Ylse Gutiérrez-Grobe, Fatima Higuera‐de la Tijera, David Kershenobich, L. Ladrón de Guevara-Cetina, Javier Lizardi-Cervera, J.A. López-Cossio, S Vázquez, Ernesto Márquez-Guillén, Nahúm Méndez‐Sánchez, R. Moreno-Alcántar, J.L. Poo-Ramírez, P. Ramos-Martínez, Heriberto Rodríguez-Hernández, J.F. Sánchez-Ávila, M. Stoopen-Rometti, A. Torre-Delgadillo, Gonzalo Torres‐Villalobos, R. Trejo-Estrada, Misael Uribe, J.A. Velarde-Ruiz Velasco,
Nonalcoholic fatty liver disease (NAFLD) affects nearly one third of the population worldwide. Mexico is one of the countries whose population has several risk factors for the disease and its prevalence could surpass 50%. If immediate action is not taken to counteract what is now considered a national health problem, the medium-term panorama will be very bleak. This serious situation prompted the Asociación Mexicana de Gastroenterología and the Asociación Mexicana de Hepatología to produce the Mexican ...
Tópico(s): Alcohol Consumption and Health Effects
2019 - Elsevier BV | Revista de Gastroenterología de México (English Edition)
Raúl Bernal-Reyes, Graciela Castro‐Narro, R. Malé-Velázquez, Ramón Carmona-Sánchez, M.S. González-Huezo, I. García-Juárez, Norberto C. Chávez‐Tapia, C. Aguilar-Salinas, I. Aiza-Haddad, M.A. Ballesteros-Amozurrutia, Francisco Bosques‐Padilla, M. Castillo-Barradas, J.A. Chávez-Barrera, L.E. Cisneros-Garza, J. Flores-Calderón, Diego García‐Compeán, Ylse Gutiérrez-Grobe, Fatima Higuera‐de la Tijera, David Kershenobich, L. Ladrón de Guevara-Cetina, Javier Lizardi-Cervera, J.A. López-Cossio, S Vázquez, Ernesto Márquez-Guillén, Nahúm Méndez‐Sánchez, R. Moreno-Alcántar, J.L. Poo-Ramírez, P. Ramos-Martínez, Heriberto Rodríguez-Hernández, J.F. Sánchez-Ávila, M. Stoopen-Rometti, A. Torre-Delgadillo, Gonzalo Torres‐Villalobos, R. Trejo-Estrada, Misael Uribe, J.A. Velarde-Ruiz Velasco,
La enfermedad por hígado graso no alcohólico (EHGNA) afecta prácticamente a un tercio de la población mundial. México es uno de los países cuya población reúne varios factores de riesgo para esta enfermedad y su prevalencia podría superar el 50%; es por eso que el panorama a mediano plazo es muy pesimista si no se toman acciones inmediatas para contrarrestar lo que ya se considera un problema de salud nacional. De ahí el interés de la Asociación Mexicana de Gastroenterología y de la Asociación Mexicana ...
Tópico(s): Alcohol Consumption and Health Effects
2019 - Elsevier BV | Revista de Gastroenterología de México
Renato A. Errea, George Vasquez‐Rios, María L. Calderon, Diego Siu, Kevin R. Duque, Luciana H. Juarez, Rodrigo Gallegos, Celene Uriol, Claudia R. Rondon, Katia P. Baca, Rosario J. Fabian, Marco Canales, Angélica Terashima, Luis A. Marcos, Frine Samalvides,
Children in the Peruvian Amazon Basin are at risk of soil-transmitted helminths (STH) infections. This study aimed to determine the prevalence of STH infection in children from a rural Amazonian community of Peru and to elucidate epidemiological risk factors associated with its perpetuation while on a school-based deworming program with mebendazole. Stool samples of children aged 2-14 years and their mothers were analyzed through direct smear analysis, Kato-Katz, spontaneous sedimentation in tube, ...
Tópico(s): Helminth infection and control
2019 - American Society of Tropical Medicine and Hygiene | American Journal of Tropical Medicine and Hygiene
Jonathan Montomoli, Luca Romeo, Sara Moccia, Michele Bernardini, Lucia Migliorelli, Daniele Berardini, Abele Donati, Andrea Carsetti, Maria Grazia Bocci, Pedro David Wendel‐Garcia, Thierry Fumeaux, Philippe Guerci, Reto Schüpbach, Can İnce, Emanuele Frontoni, Matthias P. Hilty, Mario Alfaro-Farias, Gerardo Vizmanos-Lamotte, Thomas Tschoellitsch, Jens Meier, Hernán Aguirre-Bermeo, Janina Apolo, Alberto Martínez, Geoffrey Jurkolow, Gauthier Delahaye, Emmanuel Novy, Marie-Reine Losser, Tobias Wengenmayer, Jonathan Rilinger, Dawid L. Staudacher, Sascha David, Tobias Welte, Klaus Stahl, “Agios Pavlos”, Theodoros Aslanidis, Anita Korsós, Barna Babik, Reza Nikandish, Emanuele Rezoagli, Matteo Giacomini, Alice Nova, Alberto Fogagnolo, Savino Spadaro, Roberto Ceriani, Martina Murrone, Maddalena Alessandra Wu, Chiara Cogliati, Riccardo Colombo, E Catena, F Turrini, Maria Sole Simonini, Silvia Fabbri, Antonella Potalivo, Francesca Facondini, Gianfilippo Gangitano, Tiziana Perin, Maria Grazia Bocci, Massimo Antonelli, Diederik Gommers, Raquel Rodríguez-García, Jorge Gámez-Zapata, Xiana Taboada-Fraga, Pedro Castro, Adrián Téllez, Arantxa Lander-Azcona, Jesús Escós-Orta, María Cruz Martín-Delgado, Angela Algaba-Calderon, Diego Franch-Llasat, Ferran Roche‐Campo, Herminia Lozano-Gómez, Begoña Zalba-Etayo, Marc Michot, Alexander Klarer, Rolf Ensner, Peter Schott, Severin Urech, Núria Zellweger, Lukas Merki, Adriana Lambert, Marcus Laube, Marie M. Jeitziner, Béatrice Jenni‐Moser, Jan Wiegand, Bernd Yuen, Barbara Lienhardt-Nobbe, Andrea Westphalen, Petra Salomon, Iris Drvaric, Frank Hillgaertner, Marianne Sieber, Alexander Dullenkopf, Lina Petersen, Ivan Chau, Hatem Ksouri, Govind Sridharan, Sara Cereghetti, Filippo Boroli, Jérôme Pugin, Serge Grazioli, Peter C. Rimensberger, Christian Bürkle, Julien Marrel, Mirko Brenni, Isabelle Fleisch, Jerôme Lavanchy, Marie‐Hélène Perez, Anne‐Sylvie Ramelet, Anja Baltussen Weber, Peter Gerecke, Andreas Christ, Samuele Ceruti, Andrea Glotta, Katharina Marquardt, Karim Shaikh, Tobias Hübner, Thomas A. Neff, Hermann Redecker, Mallory Moret‐Bochatay, FriederikeMeyer zu Bentrup, Michael Studhalter, Michael Stephan, Jan Brem, Nadine Gehring, Daniela Selz, Didier Naon, Gian‐Reto Kleger, Urs Pietsch, Miodrag Filipovic, Anette Ristic, Michael Sepulcri, Antje Heise, Marilene Franchitti Laurent, Jean-Christophe Laurent, Pedro David Wendel‐Garcia, Reto A. Schuepbach, Dorothea M. Heuberger, Philipp Bühler, Silvio D. Brugger, Patricia Fodor, Pascal Locher, Giovanni Camen, Tomislav Gaspert, Marija Jović, Christoph Haberthuer, Roger F. Lussman, Elif Çolak,
Accurate risk stratification of critically ill patients with coronavirus disease 2019 (COVID-19) is essential for optimizing resource allocation, delivering targeted interventions, and maximizing patient survival probability. Machine learning (ML) techniques are attracting increased interest for the development of prediction models as they excel in the analysis of complex signals in data-rich environments such as critical care.We retrieved data on patients with COVID-19 admitted to an intensive care ...
Tópico(s): Intensive Care Unit Cognitive Disorders
2021 - Elsevier BV | Journal of Intensive Medicine
Produção Nacional
Revisado por pares
Juan Bohórquez-Órdenes, Andrés Tapia-Calderón, Diego A. Vasco, Oliver Estuardo-Flores, Assed Haddad,
The inadequate use of passive thermal conditioning alternatives, such as phase change materials (PCM), in Chile, despite the climatological advantages in various regions of the country and the need to improve thermal comfort indexes in many houses and buildings, is mainly due to cultural and economic reasons. Passive thermal conditioning measures entail economic benefits and an improvement in the quality of life. However, it is perceived as a luxury and not as an investment by many Chileans. We propose ...
Tópico(s): Phase Change Materials Research
2021 - Elsevier BV | Building and Environment
Carlos Enrique Álvarez Calderón, Diego Botero-Murillo,
Para comprender el impacto que la actual pandemia tendrá en la seguridad y el bienestar de las naciones, y en la dinámica geopolítica, es necesario comprender la evolución y el impacto de las epidemias y pandemias en la historia. Esta es la primera entrega de dos artículos que buscan dar cuenta de cómo las enfermedades infecciosas han afectado y pueden llegar a afectar la estabilidad y prosperidad de las naciones. El propósito de este artículo es determinar el impacto de las epidemias y pandemias ...
Tópico(s): Zoonotic diseases and public health
2021 - | Revista Científica General José María Córdova
John Pérez‐Calderón, Diego Alejandro Marin-Silva, Noemí Zaritzky, Adriana Pinotti,
The treatment of wastewater requires the use of eco-friendly and cost-efficient adsorbents. A hybrid adsorbent film based on biodegradable polymers (poly(vinyl alcohol) (PVA) and chitosan (Ch) was developed to remove Acid Orange 7 (AO7), an azo dye from the textile industry present in industrial wastewaters. The polymeric absorbent material was submitted to a curing process with different time-temperature combinations which improved its physical stability in aqueous media. This result was supported ...
Tópico(s): Dye analysis and toxicity
2022 - Elsevier BV | Advanced Industrial and Engineering Polymer Research
Diego Calderón-Garrido, Pablo Cisneros-Álvarez, Isaac Diego García Fernández, D. Fernández, Rosa de las Heras Fernández,
La Educación Musical se caracteriza por una transformación constante en la cual muchos docentes se han sumado a las diferentes propuestas que ofrece la tecnología digital en el proceso de enseñanza-aprendizaje y el acercamiento a nuevas posibilidades y nuevo alumnado, respondiendo además a las necesidades de éste. El presente trabajo realiza una revisión descriptiva de la literatura científica más relevante de los últimos diez años centrada en el uso de la Tecnología Educativa. Dicha revisión, es ...
Tópico(s): Literacy and Educational Practices
2019 - Servicio de Publicaciones | Revista Electrónica Complutense de Investigación en Educación Musical - RECIEM
L. M. Torres, José Manuel Trinidad, Enrique J. Calderón, Diego S. Benítez, Michael Perelman,
... cancer painLuis M Torres, Jose M Trinidad, Enrique Calderón, Diego Benitez, Michael PerelmanLuis M TorresSearch for more papers ... this authorLuis M Torres; Jose M Trinidad; Enrique Calderón; Diego Benitez; Michael PerelmanPublished Online:27 Mar 2015https://doi. ...
Tópico(s): Pharmacological Effects and Toxicity Studies
2015 - Mark Allen Group | International Journal of Palliative Nursing
Darwin M. Morales-Martínez, Miguel E. Rodríguez‐Posada, Camilo Fernández-Rodríguez, María Camila Calderón Capote, Diego Rolando Gutierrez Sanabria,
The ecology of bat assemblages in savanna ecosystems is poorly known. Studies on this subject are scarce in the Colombian Orinoquía; some authors have argued that this region shows a low diversity of bat species relative to other natural regions of Colombia, which contrasts with reports for other Neotropical savannas. In order to broaden the knowledge about bat assemblages in savanna ecosystems in Colombia, we evaluated the alpha (local) and beta (species turnover) diversities in three savanna ecosystems ...
Tópico(s): Animal Vocal Communication and Behavior
2018 - Asociacion Mexicana de Mastozoología A.C. | Therya
Andrés M. Cuervo, Paulo C. Pulgarín, Diego Calderón,
Northwestern South America is a complex area that has witnessed the differentiation and expansion of a major portion of the Neotropical avifauna. The northern end of the Cordillera Central of the Colombian Andes contributes to this complexity by bringing a continuum of humid habitats from the Andean highlands to the lowland rainforests. We present new distributional information on 36 avian species of the cloud forests and páramos of this region (1300–3250 m), gained through eight years of fieldwork ...
Tópico(s): Avian ecology and behavior
2008 - Oxford University Press | Ornithological Applications
Matthew W. Blair, Alejandro Chaves, Adriana Tofiño, Juan Felipe Calderón, Juan Diego Palacio,
Tópico(s): Genetic and Environmental Crop Studies
2010 - Springer Science+Business Media | Theoretical and Applied Genetics
Carlos E. Lara, Andrés M. Cuervo, Sandra V. Valderrama, Diego Calderón-F., Carlos Daniel Cadena,
We describe a new species of wren in the genus Thryophilus (Troglodytidae) based on analysis of morphological, vocal, and genetic variation. Individuals of the new species are readily separated in the field or the museum from those of any other wren species, including its closest relatives T. rufalbus and T. nicefori, by a combination of traits including, but not limited to, plumage coloration of the upperparts, the pattern of barring on the wings and tail, overall smaller body size, a richer repertoire ...
Tópico(s): Ichthyology and Marine Biology
2012 - Oxford University Press | Ornithology
I. de Diego-Calderón, María J. Santofimia, J.M. Molina-Aldareguía, M.A. Monclús, I. Sabirov,
Advanced high strength steels via quenching and partitioning (Q&P) process are a mainstream trend in modern steel research. This work contributes to a better understanding of their local mechanical properties and local deformation behavior at the micro-scale in relation to their local microstructure. A low alloyed steel was subjected to Q&P heat treatments leading to the formation of complex multiphase microstructures. Nanoindentation tests were performed to measure nanohardness of individual phases ...
Tópico(s): Metal and Thin Film Mechanics
2014 - Elsevier BV | Materials Science and Engineering A
Freek J. Vonk, Nicholas R. Casewell, Christiaan V. Henkel, Alysha M. Heimberg, Hans J. Jansen, Ryan J.R. McCleary, Harald M. E. Kerkkamp, Rutger Vos, Isabel Guerreiro, Juan J. Calvete, Wolfgang Wüster, Anthony E. Woods, Jessica M. Logan, Robert A. Harrison, Todd A. Castoe, A. P. Jason de Koning, David D. Pollock, Mark Yandell, Diego Calderon, Camila Renjifo, Rachel B. Currier, David Salgado, Davinia Plá, Líbia Sanz, Asad S. Hyder, José M. C. Ribeiro, Jan W. Arntzen, Guido E.E.J.M. van den Thillart, Marten Boetzer, Walter Pirovano, Ron P. Dirks, Herman P. Spaink, Denis Duboule, Edwina McGlinn, R. Manjunatha Kini, Michael K. Richardson,
Significance Snake venoms are toxic protein cocktails used for prey capture. To investigate the evolution of these complex biological weapon systems, we sequenced the genome of a venomous snake, the king cobra, and assessed the composition of venom gland expressed genes, small RNAs, and secreted venom proteins. We show that regulatory components of the venom secretory system may have evolved from a pancreatic origin and that venom toxin genes were co-opted by distinct genomic mechanisms. After co- ...
Tópico(s): Cellular transport and secretion
2013 - National Academy of Sciences | Proceedings of the National Academy of Sciences
Diego Calderón, Alessandro Ballone, Jorge Cuadra, M. Schartmann, Andreas Burkert, S. Gillessen,
The gas cloud G2 is currently being tidally disrupted by the Galactic Centre supermassive black hole, Sgr A*. The region around the black hole is populated by ∼30 Wolf–Rayet stars, which produce strong outflows. We explore the possibility that gas clumps, such as G2, originate from the collision of stellar winds via the non-linear thin shell instability. Following an analytical approach, we study the thermal evolution of slabs formed in the symmetric collision of winds, evaluating whether instabilities ...
Tópico(s): Experimental and Theoretical Physics Studies
2015 - Oxford University Press | Monthly Notices of the Royal Astronomical Society
I. de Diego-Calderón, Dorien De Knijf, J.M. Molina-Aldareguía, I. Sabirov, Cecilia Föjer, Roumen Petrov,
Steel with a nominal composition of 0.25C-1.5Si-3Mn-0.023Al(mass %) was subjected to Quenching and Partitioning (Q&P) with varying parameters (quenching temperature, partitioning temperature and partitioning time) resulting in formation of multi-phase microstructure, which was thoroughly studied using X-ray (XRD) and Electron Backscatter Diffraction (EBSD).Mechanical properties of the Q&P steel were measured by tensile tests.Plastic deformation of Q&P steel at micro-scale was investigated by in situ tensile ...
Tópico(s): Metallurgy and Material Forming
2015 - Spanish National Research Council | Revista de Metalurgia
I. de Diego-Calderón, Pablo Rodríguez-Calvillo, A. Lara, J.M. Molina-Aldareguía, Roumen Petrov, Dorien De Knijf, I. Sabirov,
Despite the significant body of research on mechanical properties of quenched and partitioned (Q&P) steels, their fatigue behavior has not been investigated. This work focuses on the effect of microstructure on high cycle fatigue of Q&P steels and microstructural evolution during cyclic loading. It is demonstrated that increased content of retained austenite (RA) improves fatigue limit of Q&P steels that is related to delay of crack propagation due to austenite–martensite phase transformation. Increasing ...
Tópico(s): Fatigue and fracture mechanics
2015 - Elsevier BV | Materials Science and Engineering A