42 research outputs found
Habitat selection in sympatric Rhinolophus mehelyi and R. euryale (Chiroptera: Rhinolophidae)
No full textLa emigración vasco-navarra / por José Colá y Goiti ; con un prólogo de Sebastián Abreu y Cerain.
No full text3º ed. corr. y aum
Oiti-da-praia: Licania tomentosa.
No full textNOMES VULGARES POR UNIDADES DA FEDERAÇÃO: em Alagoas, oiti-cagão; no Amazonas, oitizeiro; na Bahia, oiti e oiti-mirim; no Ceará, goiti, oiti e oiti-da-praia; em Pernambuco, oiti-da-praia; em Minas Gerais, no Estado do Rio de Janeiro e em Sergipe, oiti; e no Rio Grande do Norte, oiti-trumbá. NOTA: nos seguintes nomes vulgares, não foi encontrada a devida correspondência com as Unidades da Federação: guaiti e morcegueira
Defensa del nombre antiguo, castizo y legítimo de la lengua de los baskos contra el soñado euzkera
No full textCrítica al artículo "Euzko" inserto en el número 1 de la revista Euzkadi de marzo de 1901 escrito por Sabino Arana y Goiri en el que se demuestra que euzkera significa literalmente lengua de los Euzkos y por tanto se ha de escribir con "z"The author criticizes the article "Euzko" published in issue nº1 of "Euzkadi" magazine dated March 1901 and written by Sabino Arana y Goiti in which it is demonstrated that "euzkera" literally means language of the Euzkos and is therefore to be spelt with a "z
Carta a E. Kortadi sobre el P. Donostia
No full textA través de una carta la autora señala la relación estrecha que su marido mantuvo con el P. Donosti
Novel circular economy business model of high-added value products for energy efficiency: from C&DW to aerogels
No full textSince the Industrial Revolution, humanity’s use of natural resources has been basically the same: TAKE, MAKE and THROW AWAY; which consequently led to the indispensable problems of waste materials. Around 461 million tons of Construction & Demolition Waste (C&DW), excluding excavation materials, are yearly generated in EU28. This undoubtedly gives a call to novel closed-loop circular business models which reshape the Eco-system in a way the waste is 'designed out'. Here, we present a novel closed-loop circular economy model of a high-performance building insulation material from silica containing C&DW materials to silica aerogels with λ≈0.015 W/mK. In the present model, the benefit comes with the use of massive construction waste to a silica precursor and thereby aerogel production guaranteeing at least 40% product cost reduction and 40% reduction in energy consumption in real construction environment
Energy Efficient Cement-Based Building Materials
No full textEnergy plays a key role in the technological, industrial, economical and societal development. The energy-intensive building construction sector accounts for approximately 42% of the total EU final energy consumption and is responsible for approximately 36% of EU CO2 emissions. The building construction sector is considered to be the one with the biggest cost effective energy-saving potential impact. Consequently, there is a strong need for implementing: i) Quick low-cost energy efficient retrofitting solutions to adapt the non-efficient residential European building stock to present energy regulation and ii) Low-cost & low-energy new buildings in line with the "nearly zero energy buildings" standards. The building envelope is the key element to address, in a building, in order to achieve the best improvements in terms of energy efficiency while maintaining the indoor environment quality. Therefore, the development of new lightweight materials and components for the building envelope with outstanding properties is terms of high thermal performance is a must that is being addressed in this work. These new materials and components will not only reduce considerably the heating and cooling demands but will maintain the indoor comfort of the buildings. The general objective of this work is to design and synthesize high thermal insulating cement-based products by incorporation of superinsulating aerogel-like materials. The develop materials will be lightweight, with a low value for the thermal conductivity while maintaining their mechanical properties.Peer reviewe
Some observations on the copolymerization of styrene with furfuryl methacrylate
No full textThe tendency for crosslinking to occur either during free radical polymerization in solution or to develop subsequently in air after precipitation of linear polymer has been observed for both polymerization of furfuryl methacrylate (FM) and copolymerization of FM with styrene (ST). Reactivity ratios rFM=0.33±0.08 and rST=0.44 ±0.02 have been determined. Thermo-oxidative stability is lowered by incorporation of FM moieties into poly-ST. Glass transition temperatures (Tg) of copolymers accord with the Fox equation and extrapolation affords a value of 64°C for the Tg of linear poly-FM. After admixture of solutions of poly(FM-co-ST) and bismaleimide (BM) at ambient temperature crosslinked gel is produced slowly by intermolecular Diels-Alder reaction between diene units (FM) and the dienophile (BM). The retro Diels-Alder reaction occurs rapidly on heating, regenerating linear copolymer and BM. The crosslinked gels exhibit considerable swelling in chloroform and toluene.Financial support from The Dow Chemical Co. is gratefully acknowledged. The authors also thank Drs J.P. Zhao and E.J.L. McInnes (EPSRC CW EPR Service, University of Manchester, UK) for their attempts to obtain EPR spectra from the copolymers. Computer programs of the Mao–Huglin iterative procedure for determining reactivity ratios at any conversion as well as the 95% joint confidence intervals can be obtained free of charge from Dr R. Mao (e-mail: [email protected]).Peer reviewe
Echolocation calls and morphology in the Mehelyi’s (<em>Rhinolophus mehelyi</em>) and mediterranean (<em>R. euryale</em>) horseshoe bats: implications for resource partitioning
No full text<strong>Abstract</strong> <em>Rhinolophus euryale</em> and <em>R. mehelyi</em> are morphologically very similar species and their distributions overlap extensively in the Mediterranean basin. We modelled their foraging behaviour using echolocation calls and wing morphology and, assuming niche segregation occurs between the two species, we explored how it is shaped by these factors. Resting frequency of echolocation calls was recorded and weight, forearm length, wing loading, aspect ratio and wing tip shape index were measured. <em>R. mehelyi</em> showed a significantly higher resting frequency than <em>R. euryale</em>, but differences are deemed insufficient for dietary niche segregation. Weight and forearm length were significantly larger in <em>R. mehelyi</em>. The higher values of aspect ratio and wing loading and a lower value of wing tip shape index in <em>R. melehyi</em> restrict its flight manoeuvrability and agility. Therefore, the flight ability of <em>R. mehelyi</em> may decrease as habitat complexity increases. Thus, the principal mechanism for resource partitioning seems to be based on differing habitat use arising from differences in wing morphology. <strong>Riassunto</strong> <strong>Ecolocalizzazione e morfologia nei rinolofi di Mehely (<em>Rhinolophus mehelyi</em>) e euriale (<em>R. euryale</em>): implicazioni nella segregazione delle risorse trofiche.</strong> <em>Rhinolophus euryale</em> e <em>R. mehelyi</em> sono specie morfologicamente molto simili, la cui distribuzione risulta largamente coincidente in area mediterranea. Il comportamento di foraggiamento delle due specie è stato analizzato in funzione delle caratteristiche dei segnali di ecolocalizzazione e della morfologia alare, ed è stata valutata l’incidenza di questi fattori nell’ipotesi di una segregazione delle nicchie. È stata rilevata la frequenza a riposo dei segnali ultrasonori, così come il peso, la lunghezza dell’avambraccio, il carico alare, e due indici di forma dell'ala (<em>aspect ratio</em> e <em>wing tip shape index</em>). <em>R. mehelyi</em> presenta una frequenza di riposo maggiore rispetto a <em>R. euryale</em>, ma la differenza non sembra sufficiente per spiegare la separazione delle nicchie trofiche. Il peso e la lunghezza dell'avambraccio risultano significativamente più elevati in <em>R. mehelyi</em>. I valori piú elevati relativamente ad <em>aspect ratio</em> e <em>wing loading</em> e il minor valore del <em>wing tip shape index</em> in <em>R. melehyi</em> indicano una minore manovrabilità in volo e una minore agilità. La capacità di <em>R. mehelyi</em> di sfruttare efficacemente un ambiente complesso decresce con il livello di complessità dell'habitat stesso. È possibile quindi ipotizzare un meccanismo di separazione nell’uso delle risorse basato su un differente uso dell’habitat, spiegabile in termini di differenze nella morfologia alare
