Chemical and textural characterisation of diagenetic to low-grade metamorphic phyllosilicates in turbidite sandstones of the South Portuguese Zone: A comparison between metapelites and sandstones

22 páginas, 13 figuras, 5 tablas.-- Nombre actual de la revista "Swiss Bulletin of Mineralogy and Petrology".The intercalation at the meter scale of shales and sandstones in the incipient metamorphic sequence of the South Portuguese Zone allows to compare the evolution from diagenesis to low metamorphic grade in both of these lithologies. Data from X-ray diffraction, optical, scanning and transmission electron microscopy as well as wholerock chemical analysis from the sandstones have been obtained and are compared with previously published data from the shales. Obvious textural differences are present from the outcrop scale to the low-magnification TEM scale; phyllosilicate packets in sandstones are clearly randomly oriented, with high-angle boundaries contrasting with the usual sub-parallel orientation in shales. But no differences have been found between the phyllosilicates of the two rocks types when comparing lattice-fringe images, polytypes, chemical composition or crystalline-domain size. Consequently, illite crystallinity and traditional crystal-chemical parameters, such as d001 and b cell dimension of K-white mica, produce equivalent and inter-changeable information between the sandstones and shales. The chemical compositions of the phyllosilicates are characterised by a general lack of homogeneity at the sample level. The phengitic vector is mainly responsible for the scattering of compositions, with a minor influence from the illitic vector. The grain size of very low-grade metamorphic turbidite sequences such as these should not be a limiting criterion in the sampling, because samples with intermediate characteristics between metapelites and sandstones may also provide valid results.Financial support was supplied bv Research Project n° BT 2000-0582 and FPI research grant to I.A., both of the Spanish Ministry of Science and Technology and Research Group RNM-0179 of the Junta de Andalucía.Peer reviewe

A new Iranian species of uroleucon mordvilko, 1914 (Hemiptera, Aphididae) from specimens in the Natural History Museum collection

P. 1-6Uroleucon (Uromelan) helichrysi sp. n. (Hemiptera, Aphididae, Aphidinae: Macrosiphini) is established from Iranian apterous and alate viviparous females caught on Helichrysum sp. (Asteraceae) and preserved in the collection of the Natural History Museum (BMNH) in London. The number of setae on the first tarsal segments (5), the number of caudal setae (20 to 28), the presence of abdominal marginal tubercles on abdominal segments 2 to 4, and the size of the cells of the siphuncular reticulation (relatively small) allow the new species to be distinguished from other Palaeartic species of the subgenus Uromelan. Blackman and Eastop’s key to apterae on Helichrysum is modified to include the new speciesS

Two new palaearctic species of uroleucon (Hemiptera: Aphididae) from the collection of the Muséum National d’Histoire Naturelle de Paris

P. 31-47Two new Palaearctic species of Uroleucon Mordvilko (Hemiptera: Aphididae: Aphidinae Macrosiphini) are described. Uroleucon (Uroleucon) teheranense n. sp. is described from apterous viviparous females caught on Lapsana sp. near Tehran (Iran) and Uroleucon (Uromelan) ariegense n. sp. is described from both apterous and alate viviparae caught on Campanula sp. in southern France. U. teheranense is compared with the few species belonging to subgenus Uroleucon that present 3 setae on first segment of tarsi, and with the species included in the key to apterae on Lapsana by BLACKMAN & EASTOP (2006), which is modified. U. ariegense is compared with the species of Uroleucon living on Campanulaceae species, mainly with the species included in BLACKMAN & EASTOP’s key to apterae on Campanula, which is modifiedS

Nueva especie iraní de Uroleucon Mordvilko, 1914 (Hemiptera, Aphididae) descrita a partir de ejemplares de la colección del Natural History Museum

Uroleucon (Uromelan) helichrysi sp. n. (Hemiptera, Aphididae, Aphidinae: Macrosiphini) is established from Iranian apterous and alate viviparous females caught on Helichrysum sp. (Asteraceae) and preserved in the collection of the Natural History Museum (BMNH) in London. The number of setae on the first tarsal segments (5), the number of caudal setae (20 to 28), the presence of abdominal marginal tubercles on abdominal segments 2 to 4, and the size of the cells of the siphuncular reticulation (relatively small) allow the new species to be distinguished from other Palaeartic species of the subgenus Uromelan. Blackman and Eastop’s key to apterae on Helichrysum is modified to include the new species. urn:lsid:zoobank.org:pub:E2B89D59-05FD-4A9E-AD78-B3C302219A10Se establece la especie Uroleucon helichrysi n. sp. (Hemiptera: Aphididae: Aphidinae: Macrosiphini) con la descripción de sus hembras vivíparas ápteras y aladas recogidas en Irán sobre Helichrysum sp. (Asteraceae), conservadas en la colección del Natural History Museum de Londres. La nueva especie se diferencia de otras especies paleárticas del subgénero Uromelan por la cantidad de setas en el primer segmento tarsal (5), la cantidad de setas caudales (20 a 28), por el tamaño de las celdillas de la reticulación cornicular (que son relativamente pequeñas) y por la presencia de papilas marginales (presentes en los segmentos abdominales 2 a 4) Se incluye una modificación a la clave de Blackman and Eastop para las ápteras que viven sobre Helichrysum. urn:lsid:zoobank.org:pub:E2B89D59-05FD-4A9E-AD78-B3C302219A1

A new aphid species (Hemiptera, Aphididae) living on centaurea from Iran

P. 17-20Macrosiphoniella (Papillomyzus) iranica sp. n. (Aphididae Macrosiphini) is described from Iranian apterous viviparous females caught on Centaurea sp. and conserved in the Natural History Museum in London and in the Muséum national d’Histoire naturelle in Paris. The features of the new species are compared with those of the other 6 species of the subgenus Papillomyzus which are hosted on Centaurea and on other Cardueae, Cynareae or Anthemideae (Asteraceae) species and are distributed along a Mediterrean-Pontian-Turanian-East Palaeartic bandS

Puerto fluvial - Multimodal en Puerto Berrio Antioquia

El presente proyecto se formuló con el fin de atender una importante necesidad en materia de transporte en Colombia, a partir del diseño de un puerto fluvial multimodal con características arquitectónicas y tecnológicas innovadoras y funcionales sobre el rio magdalena en la población de Puerto Berrio Antioquia, que contribuya a mejorar la infraestructura portuaria, de cara a los retos que conlleva la apertura económica y los tratados de libre comercio, dada la ubicación estratégica de dicho puerto como eje de movilidad en el país, ligado a las expectativas y planes de desarrollo formulados a nivel local, regional y nacional.This project was developed in order to attend an important need in transportation in Colombia, this need will be filled with the design of a river multimodal port with innovative architectural, functional and technological features on the Magdalena River in the town Puerto Berrio, Antioquia, the main objective of the port is to help improve port infrastructure, facing the challenges of economic openness and Colombian Trade Promotion Agreement, TPA, given the strategic location of the port as the mobility axis in the country, linked to the expectations and development plans formulated at local, regional and national levels.Arquitecto (a)Pregrad

Primera cita de Geoica setulosa (Passerini, 1860) en la Península Ibérica (Hemiptera, Aphididae, Eriosomatinae, Fordini)

El género Geoica Hart, agrupa 25 especies (Remaudière & Remaudière, 1997; Qiao & Zhang, 2001; Remaudière et al., 2004), incluyendo en ellas ocho especies próximas a G. utricularia, que están mal definidas y son más o menos dudosas (grupo "utricularia" según Remaudière & Remaudière, 1997). Es un género de origen y distribución paleártica, pero que debido a la capacidad que tienen sus especies para desarrollar poblaciones anholocíclicas en sus hospedadores secundarios (básicamente gramíneas), puede estar presente en otras zonas del mundo, incluso en lugares en los que no crece su hospedador primario (Pistacia spp.) (Blackman & Eastop, 1994; Nieto Nafría et al., 2004). En Europa se conocen únicamente cuatro especies: G. lucífuga (Zehntner), G. setulosa (Passerini), G. utricularia (Passerini) y G. wertheimae Brown & Blackman, y sólo una, G. utricularia, se conocía hasta la fecha en la península Ibérica (Pérez Hidalgo & Nieto Nafría, 2003; Nieto Nafría et al., 2004)

Modelos de escalabilidad en seguros generales ¿Por qué no hay un “Apple” de los seguros?

Màster de Direcció d'Entitats Asseguradores i Financeres, Universitat de Barcelona, Facultat d'Economia i Empresa, Curs: 2021-2022, Tutor: Dr. Luis María Sáez de Jáuregui Sanz¿Podría un producto como el seguro globalizarse e industrializarse verdaderamente? Con este trabajo se ha querido abordar las posibilidades de que un seguro de no-vida retail al uso, pongamos un seguro de ciber riesgo, se pueda crear de manera centralizada, pero con la particularidad de comercializarse a nivel global, como si de un teléfono Apple o de una motocicleta Honda se tratara y, en caso, afirmativo qué aspectos deberían tenerse en cuenta antes de abordar un mercado nuevo y lanzar cualquier producto si fuéramos una empresa aseguradora con la capacidad de hacer una inversión / lanzamiento tan complejo y costoso de este tipo (...

Domain adaptation and transfer learning methods enhance deep learning models used in inner speech based brain computer interfaces

Brain-Computer Interfaces are useful devices that can partially restore communication from severely compromised patients. Although advances in deep learning have significantly improved brain pattern recognition, a large amount of data is required for training these deep architectures. In recent years, the inner speech paradigm has drawn much attention, as it can potentially allow natural control of different devices. However, as of the date of this publication, there is only a small amount of data available in this paradigm. In this work we show that it is possible, through transfer learning and domain adaptation methods, to make the most of the scarce data, enhancing the training process of a deep learning architecture used in brain-computer interfaces.Sociedad Argentina de Informática e Investigación Operativ