39 research outputs found
Periodontal Disease and Nuclear and Oxidative DNA Damage
Oral health is an important aspect of the overall health status of an individual. DNA damage has been associated with oral health and dental factors due to the increased of oxidative stress (OxS). DNA damage can produce a wide range of effects on human health. These effects could appear immediately, but others do not become evident much later. Chronic diseases have been study to understand their mechanisms, clinical implications, and the development of secondary disease such as cancer. Periodontitis is one of the most common oral diseases. It is an inflammatory chronic infectious disease, which is characterized by the loss of supporting tissues and tooth loss caused by periodontopathogens and long-term release of reactive oxygen species (ROS); thus, oxidative stress is increased during periodontitis. Oxidative stress can produce DNA damage, including the oxidation of nucleosides, which could cause DNA strand break. This oxidative damage leads the formation of micronuclei (MN) a marker of nuclear damage. Also, oxidative stress increased 8-hydroxy-2âČ-deoxyguanosine levels which are the most common stable product of oxidative DNA damage
Development of advanced materials guided by numerical simulations to improve performance and cost-efficiency of borehole heat exchangers (BHEs)
[EN] One promising way to improve the efficiency of borehole heat exchangers (BHEs) in shallow geothermal applications is to enhance the thermal properties of the materials involved in its construction. Early attempts, such as using metal tubes in the 1980s or the utilization of thin-foil hoses, did not succeed in being adopted by the market for diverse reasons (cost, corrosion, fragility, etc...). In parallel, the optimization of pipe size, the use of double-U-tubes, thermally enhanced grout, etc. were able to bring the measure for the BHE efficiency, the borehole thermal resistance, from 0.20 to 0.15 K/(Wm) down to 0.08-0.06 K/(Wm) in the best solutions today. A further improvement cannot be expected without development of new, dedicated materials, combining the versatility of plastic like PE with an increased thermal conductivity that matches the respective properties of the rock and soil. This goal was included in the Strategic Research and Innovation Agenda of the European Technology Platform on Renewable Heating and Cooling in 2013.
Within an EU supported project, both BHE pipes and grouting materials have been produced prototypically in small amounts, suitable for the first tests in the intended environment.
The present work explains the research pathways envisaged and the resulting sensitivity analysis to highlight the influence of some of the most critical parameters that affect the overall performance of a GSHP system. The results have allowed guiding the real development of more efficient new advanced materials for different scenarios representative of different European regions. Finally the developed materials and their properties are discussed, including a comparative assessment about their compliance with reference material properties as currently seen in the BHE market.This article is part of a project that has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 727583.Badenes Badenes, B.; Sanner, B.; Mateo Pla, MĂ.; Cuevas, JM.; Bartoli, F.; Ciardelli, F.; GonzĂĄlez, RM.... (2020). Development of advanced materials guided by numerical simulations to improve performance and cost-efficiency of borehole heat exchangers (BHEs). Energy. 201:1-17. https://doi.org/10.1016/j.energy.2020.117628117201Alva, G., Lin, Y., & Fang, G. (2018). An overview of thermal energy storage systems. Energy, 144, 341-378. doi:10.1016/j.energy.2017.12.037Li, H., Xu, W., Yu, Z., Wu, J., & Sun, Z. (2017). Application analyze of a ground source heat pump system in a nearly zero energy building in China. Energy, 125, 140-151. doi:10.1016/j.energy.2017.02.108Ozgener, O. (2010). Use of solar assisted geothermal heat pump and small wind turbine systems for heating agricultural and residential buildings. Energy, 35(1), 262-268. doi:10.1016/j.energy.2009.09.018Jensen, J. K., Ommen, T., Markussen, W. B., & Elmegaard, B. (2017). Design of serially connected district heating heat pumps utilising a geothermal heat source. Energy, 137, 865-877. doi:10.1016/j.energy.2017.03.164A. C. Crandall, House heating with earth heat pump, Electr World, 126/19, 94-5 (1946).Moegle, E. (2009). Earth- and buildingsided characteristics of a geothermal energy field with five coaxial tubes erected in 1974 in Schoenaich (County of Boeblingen) â a contribution to history for near-surface geothermic drilling in Europe. Jahresberichte und Mitteilungen des Oberrheinischen Geologischen Vereins, 91, 31-35. doi:10.1127/jmogv/91/2009/31Lundh, M., & DalenbĂ€ck, J.-O. (2008). Swedish solar heated residential area with seasonal storage in rock: Initial evaluation. Renewable Energy, 33(4), 703-711. doi:10.1016/j.renene.2007.03.024Ground coupled heat pumps of high technology - groundhit, Funded by FP6-SUSTDEV - sustainable development, global change and ecosystems: thematic priority 6 under the focusing and integrating community research programme 2002-2006. Project ID: 503063.Go, G.-H., Lee, S.-R., Yoon, S., Park, H., & Park, Sk. (2014). Estimation and experimental validation of borehole thermal resistance. KSCE Journal of Civil Engineering, 18(4), 992-1000. doi:10.1007/s12205-014-0454-xZhang, S., Huang, Z., Li, G., Wu, X., Peng, C., & Zhang, W. (2018). Numerical analysis of transient conjugate heat transfer and thermal stress distribution in geothermal drilling with high-pressure liquid nitrogen jet. Applied Thermal Engineering, 129, 1348-1357. doi:10.1016/j.applthermaleng.2017.10.042Fossa, M., & Minchio, F. (2013). The effect of borefield geometry and ground thermal load profile on hourly thermal response of geothermal heat pump systems. Energy, 51, 323-329. doi:10.1016/j.energy.2012.12.043SPIN-PET, Via R. Piaggio, 32, 56025, Pontedera ,Italy, http://www.spinpet.it//, [Online; accessed 12-December-2019].SILMA, Via Lombardia 97/00/101, Poggio a Caiano, Italy, http://www.spinpet.it//, [Online; accessed 12-December-2019].AIMPLAS, Plastics Technology Centre, Paterna, Spain, https://www.aimplas.net/aimplas/, [Online; accessed 12-December-2019].CAUDAL - Extruline Systems, Puerto Lumbreras (Murcia), Spain, https://www.caudal.es/index.php/en/, [Online; accessed 12-December-2019].ASTM C 666: [Standard Test Method for Resistance of Concrete to Rapid Freezing and Thawing].ASTM C 531-85: Standard test method for linear shrinkage and coefficient of thermal expansion of chemical-resistant mortars, grouts, monolithic surfacings, and polymer concretes.EN 197-1: Cement - Part 1: composition, specifications and conformity criteria for common cements.EN 445: Grout for prestressing tendons - test methods.SS 137244: Concrete testing â hardened concrete â scaling at freezing.RISE Research Institutes of Sweden, Division SamhĂ€llsbyggnad â Infrastructure and Concrete Construction, Stockholm, Sweden, https://www.ri.se/sv, [Online; accessed 12-December-2019].UBeG GbR, Wetzlar, Germany, http://www.ubeg.de. [Online; accessed 12-December-2019]
Revista de Vertebrados de la Estación Biológica de Doñana
PĂĄgina 298 con error de impresiĂłnEstudio cariolĂłgico en dos especies de SerrĂĄnidos del MediterrĂĄneo (Peces: PerciformesRelaciones morfomĂ©tricas de Atherina boyeri Risso (Pisces: Atherinidae) de la laguna de Zoñar (CĂłrdoba, España)ContribuciĂłn al conocimiento de la biometrĂay osteologĂa de Barbus barbus bocagei, Steindachner, 1866 (Pisces: CyprinidaeLa actividad de la salamandra, Salamandra salamandra (L.), en Galicia.Estudios sobre el sapo corredor (Bufo calamita) en el Sur de España.1. BiometrĂaEstudios sobre el sapo corredor (Bufo calamita) en el Sur de España. II. AlimentaciĂłnBiologĂa de la reproducciĂłn de Rana iberica Boulenger 1879 en zonas simpĂĄtridas con Rana temporaria Linneo, 1758Nuevos datos sobre la distribuciĂłn geogrĂĄfica de Lacerta monticola cantabrica Mertens, 1929. (Sauria, lacertidae).Datos sobre Lacerta monticola Boulenger, 1905 (Saurio: lacertidae)en el oeste del Sistema Central.Nueva especie de Anolis (lacertilia, Iguanidae) para CubaEtograma cuantificado del cortejo en Falco naumannOntogĂ©nesis del comportamiento predador en Falco naumanniContaminaciĂłn xenobiĂłtica del Parque Nacional de Doñana. 1. Residuos de insecticidas organoclorados, bifenilos policlorados y mercurio en anseriformes y gruiformesReproducciĂłn del crĂalo (Clamator glandarius) en Sierra Morena CentraNidificaciĂłn de Picus viridis en taludes de arcilla en Ramblas de Guadix (Granada)Comportamiento del calamĂłn Porphyrio porphyrio (Linnaeus, 1758) en Doñana, Marismas del GuadalquiviBiologĂa y ecologĂa de la malvasĂa (Oxyura leucocephala) en AndalucĂa.On the differential diet of Carnivora in islands:a method for analysing it and a particular case.Notas sobre la distribuciĂłn pasada y actual del meloncillo Herpestes ichneumon (L.) en la PenĂnsula IbĂ©ricaEstructuraciĂłn de las interacciones en una camada de lobos (CanĂs lupus)Nuevos datos sobre la distribuciĂłn del Cottus gobio L. (pisces, cottidae) en EspañaSobre la alimentaciĂłn de Callopistes maculatus (Reptilia,teiidaeObservaciĂłn de Lacerta lepida depredando un nido de Alectoris rufaNueva cita del galĂĄpago leproso Mauremys leprosa (Scheigger, 1812) en los pirineosPrimera cita de Psammodromus hispanicus (Fitzinger) para GaliciaSobre la presencia de Gallotia (=Lacerta) atlantica (Peters y Doria, 1882) en Gran CanariaNota sobre las Lacerta monticola Boulenger, 1905 de las zonas del norte de GaliciaPrimeras notas herpetolĂłgicas de la provincia de Soria.Datos sobre selecciĂłn de hĂĄbitat y ecologĂa alimenticia del porrĂłn pardo (Aythya nyroca)Probable nueva ĂĄrea de crĂa del pechiazul (Luscinia svecica cyanecula) en el sistema central. PerisPredaciĂłn de Falco peregrinus y Falco subbuteo sobre quirĂłpterosResultados de la producciĂłn de Oxyura leucocephala en el año 1981 en las lagunas de Zóñar y el rincĂłnAnĂĄlisis de la dieta de Tyto alba en un medio ĂĄrido antropĂłgeno de los alrededores de AlmerĂaÂżSon Eudocimus ruber y E. albus distintas especies?EL Estornino pinto (Sturnus vulgaris) en Canarias: nueva especie nidifiante en el archipiĂ©lagoDatos sobre la alimentaciĂłn otoñal del cĂĄrabo (Strix aluco) en la sierra de CĂĄdizObservaciĂłn primaveral de rapaces y otras aves en el pĂĄramo del estado de MĂ©rida (Venezuela).MurciĂ©lago hematĂłfago (Desmodus rotundus) parasitando a un chigĂŒire (Hidrochoerus hydrochaeris)Observaciones sobre la reproducciĂłn del zacatuche o teporinho Romerolagus diazi (Mammalia: lagomorpha)Estudio electroforĂ©tico de hemoglobinas y esterasas sanguĂneas en Rhinolophus ferrumequinum (Chiroptera: rhinolophidae) y de hemoglobinas en Tadaria taeniotis (chiroptera: molossidae)Peer reviewe
The Fourteenth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the extended Baryon Oscillation Spectroscopic Survey and from the second phase of the Apache Point Observatory Galactic Evolution Experiment
The fourth generation of the Sloan Digital Sky Survey (SDSS-IV) has been in
operation since July 2014. This paper describes the second data release from
this phase, and the fourteenth from SDSS overall (making this, Data Release
Fourteen or DR14). This release makes public data taken by SDSS-IV in its first
two years of operation (July 2014-2016). Like all previous SDSS releases, DR14
is cumulative, including the most recent reductions and calibrations of all
data taken by SDSS since the first phase began operations in 2000. New in DR14
is the first public release of data from the extended Baryon Oscillation
Spectroscopic Survey (eBOSS); the first data from the second phase of the
Apache Point Observatory (APO) Galactic Evolution Experiment (APOGEE-2),
including stellar parameter estimates from an innovative data driven machine
learning algorithm known as "The Cannon"; and almost twice as many data cubes
from the Mapping Nearby Galaxies at APO (MaNGA) survey as were in the previous
release (N = 2812 in total). This paper describes the location and format of
the publicly available data from SDSS-IV surveys. We provide references to the
important technical papers describing how these data have been taken (both
targeting and observation details) and processed for scientific use. The SDSS
website (www.sdss.org) has been updated for this release, and provides links to
data downloads, as well as tutorials and examples of data use. SDSS-IV is
planning to continue to collect astronomical data until 2020, and will be
followed by SDSS-V.Comment: SDSS-IV collaboration alphabetical author data release paper. DR14
happened on 31st July 2017. 19 pages, 5 figures. Accepted by ApJS on 28th Nov
2017 (this is the "post-print" and "post-proofs" version; minor corrections
only from v1, and most of errors found in proofs corrected
Resolver problemas sociales: hacia una metodologĂa de nodos articuladores (Complexus 11)
Los autores nos comparten sus experiencias y bĂșsquedas, desde sus enfoques teĂłricos particulares y al mismo tiempo desde un trabajo de interconexiĂłn intrauniversitaria para la producciĂłn de conocimiento, metodologĂas y herramientas orientadas a solucionar integralmente problemĂĄticas sociales complejas y con escenarios cambiantes
Sloan Digital Sky Survey IV: Mapping the Milky Way, Nearby Galaxies, and the Distant Universe
We describe the Sloan Digital Sky Survey IV (SDSS-IV), a project encompassing three major spectroscopic programs. The Apache Point Observatory Galactic Evolution Experiment 2 (APOGEE-2) is observing hundreds of thousands of Milky Way stars at high resolution and high signal-to-noise ratios in the near-infrared. The Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) survey is obtaining spatially resolved spectroscopy for thousands of nearby galaxies (median ). The extended Baryon Oscillation Spectroscopic Survey (eBOSS) is mapping the galaxy, quasar, and neutral gas distributions between and 3.5 to constrain cosmology using baryon acoustic oscillations, redshift space distortions, and the shape of the power spectrum. Within eBOSS, we are conducting two major subprograms: the SPectroscopic IDentification of eROSITA Sources (SPIDERS), investigating X-ray AGNs and galaxies in X-ray clusters, and the Time Domain Spectroscopic Survey (TDSS), obtaining spectra of variable sources. All programs use the 2.5 m Sloan Foundation Telescope at the Apache Point Observatory; observations there began in Summer 2014. APOGEE-2 also operates a second near-infrared spectrograph at the 2.5 m du Pont Telescope at Las Campanas Observatory, with observations beginning in early 2017. Observations at both facilities are scheduled to continue through 2020. In keeping with previous SDSS policy, SDSS-IV provides regularly scheduled public data releases; the first one, Data Release 13, was made available in 2016 July
The Fourteenth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the Extended Baryon Oscillation Spectroscopic Survey and from the Second Phase of the Apache Point Observatory Galactic Evolution Experiment
The fourth generation of the Sloan Digital Sky Survey (SDSS-IV) has been in operation since 2014 July. This paper describes the second data release from this phase, and the 14th from SDSS overall (making this Data Release Fourteen or DR14). This release makes the data taken by SDSS-IV in its first two years of operation (2014â2016 July) public. Like all previous SDSS releases, DR14 is cumulative, including the most recent reductions and calibrations of all data taken by SDSS since the first phase began operations in 2000. New in DR14 is the first public release of data from the extended Baryon Oscillation Spectroscopic Survey; the first data from the second phase of the Apache Point Observatory (APO) Galactic Evolution Experiment (APOGEE-2), including stellar parameter estimates from an innovative data-driven machine-learning algorithm known as "The Cannon"; and almost twice as many data cubes from the Mapping Nearby Galaxies at APO (MaNGA) survey as were in the previous release (N = 2812 in total). This paper describes the location and format of the publicly available data from the SDSS-IV surveys. We provide references to the important technical papers describing how these data have been taken (both targeting and observation details) and processed for scientific use. The SDSS web site (www.sdss.org) has been updated for this release and provides links to data downloads, as well as tutorials and examples of data use. SDSS-IV is planning to continue to collect astronomical data until 2020 and will be followed by SDSS-V
The 16th Data Release of the Sloan Digital Sky Surveys: First Release from the APOGEE-2 Southern Survey and Full Release of eBOSS Spectra
This paper documents the 16th data release (DR16) from the Sloan Digital Sky Surveys (SDSS), the fourth and penultimate from the fourth phase (SDSS-IV). This is the first release of data from the Southern Hemisphere survey of the Apache Point Observatory Galactic Evolution Experiment 2 (APOGEE-2); new data from APOGEE-2 North are also included. DR16 is also notable as the final data release for the main cosmological program of the Extended Baryon Oscillation Spectroscopic Survey (eBOSS), and all raw and reduced spectra from that project are released here. DR16 also includes all the data from the Time Domain Spectroscopic Survey and new data from the SPectroscopic IDentification of ERosita Survey programs, both of which were co-observed on eBOSS plates. DR16 has no new data from the Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) survey (or the MaNGA Stellar Library "MaStar"). We also preview future SDSS-V operations (due to start in 2020), and summarize plans for the final SDSS-IV data release (DR17)
Sloan Digital Sky Survey IV: mapping the Milky Way, nearby galaxies, and the distant universe
We describe the Sloan Digital Sky Survey IV (SDSS-IV), a project encompassing three major spectroscopic programs. The Apache Point Observatory Galactic Evolution Experiment 2 (APOGEE-2) is observing hundreds of thousands of Milky Way stars at high resolution and high signal-to-noise ratios in the near-infrared. The Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) survey is obtaining spatially resolved spectroscopy for thousands of nearby galaxies (median ). The extended Baryon Oscillation Spectroscopic Survey (eBOSS) is mapping the galaxy, quasar, and neutral gas distributions between and 3.5 to constrain cosmology using baryon acoustic oscillations, redshift space distortions, and the shape of the power spectrum. Within eBOSS, we are conducting two major subprograms: the SPectroscopic IDentification of eROSITA Sources (SPIDERS), investigating X-ray AGNs and galaxies in X-ray clusters, and the Time Domain Spectroscopic Survey (TDSS), obtaining spectra of variable sources. All programs use the 2.5 m Sloan Foundation Telescope at the Apache Point Observatory; observations there began in Summer 2014. APOGEE-2 also operates a second near-infrared spectrograph at the 2.5 m du Pont Telescope at Las Campanas Observatory, with observations beginning in early 2017. Observations at both facilities are scheduled to continue through 2020. In keeping with previous SDSS policy, SDSS-IV provides regularly scheduled public data releases; the first one, Data Release 13, was made available in 2016 July
The Seventeenth Data Release of the Sloan Digital Sky Surveys: Complete Release of MaNGA, MaStar and APOGEE-2 Data
This paper documents the seventeenth data release (DR17) from the Sloan Digital Sky Surveys; the fifth and final release from the fourth phase (SDSS-IV). DR17 contains the complete release of the Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) survey, which reached its goal of surveying over 10,000 nearby galaxies. The complete release of the MaNGA Stellar Library (MaStar) accompanies this data, providing observations of almost 30,000 stars through the MaNGA instrument during bright time. DR17 also contains the complete release of the Apache Point Observatory Galactic Evolution Experiment 2 (APOGEE-2) survey which publicly releases infra-red spectra of over 650,000 stars. The main sample from the Extended Baryon Oscillation Spectroscopic Survey (eBOSS), as well as the sub-survey Time Domain Spectroscopic Survey (TDSS) data were fully released in DR16. New single-fiber optical spectroscopy released in DR17 is from the SPectroscipic IDentification of ERosita Survey (SPIDERS) sub-survey and the eBOSS-RM program. Along with the primary data sets, DR17 includes 25 new or updated Value Added Catalogs (VACs). This paper concludes the release of SDSS-IV survey data. SDSS continues into its fifth phase with observations already underway for the Milky Way Mapper (MWM), Local Volume Mapper (LVM) and Black Hole Mapper (BHM) surveys