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Now showing items 1-20 of 226
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The 2006 Orionid outburst imaged by all-sky CCD cameras from Spain: meteoroid spatial fluxes and orbital elements
Trigo Rodríguez, Josep María; Madiedo Gil, José María
; Llorca, Jordi; Gural, P. S.; Pujols, P.; Tezel, Tunc (Oxford University Press, 2007)
By using high-resolution low-scan-rate all-sky CCD cameras, the SPanish Meteor Network (SPMN) detected an outburst of Orionid meteors associated with comet 1P/Halley on 2006 October 20–21. This detection was made possible ... -
The 2011 October Draconids outburst – I. Orbital elements, meteoroid fluxes and 21P/Giacobini–Zinner delivered mass to Earth
Trigo Rodríguez, Josep María; Madiedo Gil, José María; Williams, I. P.; Dergham, J.; Cortés, J.; Castro Tirado, Alberto J.; Ortiz Moreno, José Luis; Zamorano, J.; Ocaña Gónzalez, Francisco; Izquierdo Gómez, Jaime; Sánchez de Miguel, A.; Alonso Azcárate, Jacinto; Rodríguez, Diego; Tapia, Mar; Pujols, P.; Lacruz, J.; Pruneda, Francesc; Oliva, Armand; Pastor Erades, Juan; Marín, Antonio Francisco (Oxford University Press, 2013)
On 2011 October 8, the Earth crossed the dust trails left by comet 21P/Giacobini–Zinner during its 19th and 20th century perihelion approaches with the comet being close to perihelion. The geometric circumstances of that ... -
The 2011 October Draconids outburst – II. Meteoroid chemical abundances from fireball spectroscopy
Madiedo Gil, José María; Trigo Rodríguez, Josep María; Konovalova, N.; Williams, I. P.; Castro Tirado, Alberto J.; Ortiz Moreno, José Luis; Cabrera Caño, Jesús (Oxford University Press, 2013)
On October 8, 2011 the Earth crossed dust trails ejected from comet 21P/Giacobini-Zinner in the late 19th and early 20th Century. This gave rise to an outburst in the activity of the October Draconid meteor shower, and ... -
A Mathcad‐based educational experience to address the design of nonisothermal plug flow reactors
Cuadri Vega, Antonio Abad; Gallego Calvo, Rocío; Martín Alfonso, María José; Delgado Sánchez, Clara; Cortés Triviño, Esperanza; Tenorio Alfonso, Adrián; Borrero López, Antonio María; Ortega Bravo, Francisco José (Wiley, 2022)
Mathcad is a simple-to-use and intuitive mathematical software that helps students to minimize the mathematical difficulties involved in solving engineering problems. The design of nonisothermal plug flow reactors (PFR) ... -
A sustainable methanol-based solvent exchange method to produce nanocellulose-based ecofriendly lubricants
Roman, Claudia; García Morales, Moisés; Eugenio, María Eugenia; Ibarra, David; Martín Sampedro, Raquel; Delgado Canto, Miguel Ángel (Elsevier, 2021)
A prospective methodology aimed to develop totally sustainable oleogels with potential application in lubrication is reported. Oleogels were prepared with cellulose nanofibrils from elm pulps in castor oil. Even at a ... -
AFM and SEM assessment of lubricating grease microstructures : influence of sample preparation protocol, frictional working conditions and composition
Roman, C.; Valencia Barragán, Concepción; Franco Gómez, José María (Springer Verlag, 2016)
The microstructure of lubricating greases greatly conditions their in-service performance. In that sense, optimal testing protocols are required in order to accomplish their correct morphological characterization. This ... -
Ageing Effects on a Softened Bitumen by the Addition of DSA (Dodecenyl Succinic Anhydride)
Ortega Bravo, Francisco José; Cuadri Vega, Antonio Abad; Partal López, Pedro; Navarro Domínguez, Francisco Javier (MDPI, 2022-06)
The softening of aged bitumen is necessary for a successful asphalt rejuvenation in road recycling operations. Thus, this study proposes a novel and successful approach by using Dodecenyl Succinic Anhydride (DSA), a ... -
Amorphous Al-Ti Powders Prepared by Mechanical Alloying and Consolidated by Electrical Resistance Sintering
Urban, Petr; Ternero Fernández, Fátima; Caballero, Eduardo S.; Nandyala, Sooraj; Montes Martos, Juan Manuel; Gómez Cuevas, Francisco de Paula (MDPI, 2019-10)
A novel processing method for amorphous Al50Ti50 alloy, obtained by mechanical alloying and subsequently consolidated by electrical resistance sintering, has been investigated. The characterisation of the powders and the ... -
An Earth-grazing fireball from the Daytime ζ -Perseid shower observed over Spain on 2012 June 10
Madiedo Gil, José María; Espartero, F.; Castro Tirado, Alberto J.; Pastor, S.; Reyes, J. A. de los (Royal Astronomical Society, 2016)
On 2012 June 10, an Earth-grazer meteor which lasted over 17 s with an absolute magnitude of -4.0 ± 0.5 was observed over Spain. This work focuses on the analysis of this rare event which is, to our knowledge, the faintest ... -
An energetical approach to study the structural degradation of traditional and biogenic lubricating greases
(Universidad de Huelva, 2022)En un contacto tribológico, los procesos de fricción conducen a efectos irreversibles asociados al desgaste, que son el resultado de un aporte de energía de fricción al un sistema tribológico. En general, se aplican ... -
Analisys of a superbolide from a domocloid observed over Spain on 2012 July 13
Madiedo Gil, José María; Trigo Rodríguez, Josep María; Zamorano, J.; Ortiz Moreno, José Luis; Sánchez de Miguel, A.; Ocaña Gónzalez, Francisco; Izquierdo Gómez, Jaime; Castro Tirado, Alberto J.; Morales, Nicolás; Galadí, D.; Guindos, E. de; Lacruz, J.; Organero, F.; Ana Hernández, Leonor; Fonseca, F.; Tapia, Mar; Gallego, Felipe; Cabrera Caño, Jesús (Oxford University Press, 2013)
A superbolide with an estimated absolute magnitude of−20±1was seen on 2012 July 13 over the centre and south of Spain. This extraordinary event, which was witnessed by numerous casual observers, was recorded in the ... -
Analysis of Moon impact flashes detected during the 2012 and 2013 Perseids
Madiedo Gil, José María; Ortiz Moreno, José Luis; Organero, F.; Ana Hernández, Leonor; Fonseca, F.; Morales, Nicolás; Cabrera Caño, Jesús (European Southern Observatory, 2015)
We present the results of our Moon impact flash detection campaigns performed around the maximum activity period of the Perseid meteor shower in 2012 and 2013. Just one flash produced by a Perseid meteoroid was detected ... -
Analysis of Single Board Architectures Integrating Sensors Technologies
Development boards, Single-Board Computers (SBCs) and Single-Board Microcontrollers (SBMs) integrating sensors and communication technologies have become a very popular and interesting solution in the last decade. They ... -
Analysis of the September ε-Perseid outburst in 2013
Madiedo Gil, José María; Pujols, P. (Oxford University Press, 2018)
We analyse the outburst experienced by the September ε-Perseid meteor shower on 2013 September 9. As a result of our monitoring, the atmospheric trajectory of 60 multistation events observed over Spain was obtained and ... -
Analytical approaches for arsenic determination in air : a critical review
Sánchez-Rodas Navarro, Daniel Alejandro; Sánchez de la Campa Verdona, Ana María; Alsioufi, Louay (Elsevier Masson, 2015)
This review describes the different steps involved in the determination of arsenic in air, considering the particulate matter (PM) and the gaseous phase. The review focuses on sampling, sample preparation and instrumental ... -
Aprovechamiento integral de Eucalyptus globulus en un esquema de biorrefinería en doble etapa
Loaiza Rodríguez, Javier Mauricio; Alfaro Martínez, Ascensión; López Baldovín, Francisco; García, María T.; García Domínguez, Juan Carlos (Wood Engineering Department of the University of Bío-Bío, 2020-01)
Se han aplicado dos tratamientos previos al proceso de pasteado etanol-sosa sobre madera de Eucalyptus globulus para evaluar su influencia sobre las propiedades de las pastas celulósicas obtenidas. Se aplica una primera ... -
The Ardón L6 ordinary chondrite : a long-hidden Spanish meteorite fall
Trigo Rodríguez, Josep María; Llorca, Jordi; Weyrauch, Mona; Bischoff, Addi; Moyano Cambero, Carles E.; Keil, Klaus; Laubenstein, Matthias; Pack, Andreas; Madiedo Gil, José María; Alonso Azcárate, Jacinto; Riebe, My; Wieler, Rainer; Ott, Uli; Tapia, Mar; Mestres, Narcís (Meteoritical Society, 2014)
We report and describe an L6 ordinary chondrite fall that occurred in Ardón, León province, Spain (longitude 5.5605°W, latitude 42.4364°N) on July 9th, 1931. The 5.5 g single stone was kept hidden for 83 yr by Rosa Gonzólez ... -
Assessment of compost maturity by using an electronic nose
López Núñez, Rafael; Giráldez Díaz, Inmaculada; Palma López, Alberto; Díaz Blanco, Manuel Jesús (Elsevier, 2015)
The composting process produces and emits hundreds of different gases. Volatile organic compounds (VOCs) can provide information about progress of composting process. This paper is focused on the qualitative and quantitative ... -
Assessment of Sustainability of Bio Treated Lignocellulose-Based Oleogels
Fajardo, Carmen; Blánquez, Alba; Borrero López, Antonio María; Valencia Barragán, Concepción (MDPI, 2021-01)
The development of biological strategies to obtain new high-added value biopolymers from lignocellulosic biomass is a current challenge for scientific community. This study evaluates the biodegradability and ecotoxicity ... -
Asteroid 2002NY40 as a source of meteorite-dropping bolides
Trigo Rodríguez, Josep María; Lyytinen, E.; Jones, D. C.; Madiedo Gil, José María; Castro Tirado, Alberto J.; Williams, I. P.; Llorca, Jordi; Vítek, Stanislav; Jelinek, M.; Troughton, Blanca; Gálvez, Francisco (Oxford University Press, 2007)
The existence of asteroidal meteoroid streams capable of producing meteorite-dropping bolides has long being invoked, but evidence is scarce. Recent modelling of previously reported associations suggests that the time-scales ...
