17,475 research outputs found
Polysyncraton trivolutum Millar 1960
No full textPolysyncraton trivolutum (Millar, 1960) Fig. 3 C,D,G References and synonymy: Polysyncraton trivolutum Millar (1960) p. 58; Monniot & Monniot (1983) p. 43; Monniot et al. (2011) p. 10. Localities: 5 S. This species forms crusts several cm across and 4–5 mm thick. The colour is white with a brownish tinge. The spicules are dense, in general less than 25 µm in diameter (occasionally reaching 40). They are stellate with short rays, up to ten in optical section. The general cavity of the colony is at the thoracic level, but it extends between groups of abdomina. The thoraces reach 2 mm in length. They have an atrial languet that ranges from very small and simple to long and with several points. Cup-like thoracic organs are prominent between the second and third row of stigmata. No retractor muscle is present. The abdomina are smaller than the thoraces, and are in general in male phase. They have three testicular lobes surrounded by a sperm duct describing four coils. Some zooids also have a few developing oocytes adjacent to the testes. Remarks. the presence of atrial languet, absence of retractor muscle, structure of thoracic organs and gonads allows the assignment of our specimens to this species. However, P. trivolutum is highly variable and may comprise a group of closely related species (Monniot & Monniot 1983). This taxon is common in Antarctic and subantarctic regions (Monniot & Monniot 1983, Monniot et al. 2011, Schories et al. 2015).Published as part of Turon, Xavier, Cañete, Juan I., Sellanes, Javier, Rocha, Rosana M. & López-Legentil, Susanna, 2016, Ascidian fauna (Tunicata, Ascidiacea) of subantarctic and temperate regions of Chile, pp. 151-180 in Zootaxa 4093 (2) on page 158, DOI: 10.11646/zootaxa.4093.2.1, http://zenodo.org/record/26766
The politics and economics of regulatory impact assessment
No full textThis is the author accepted manuscript. The final version is available from the publisher via the link in this record
ESCOCIA (Reino Unido). Mapas generales. 1:830000 (1745)
No full textDedicatoria : "To His Royal Highness William Duke of Cumberland Commander in Chief of His Majesty's Forces This Map of North Britain is most humbly Dedicated by his Royal Highnesses most Faithful & most Obedt. Servant And. Millar"Escala gráfica de 30 millas geograficas de 60 al grado [0 6,7 cm]. Coordenadas referidas a los meridianos de Ferro (E 9°52''--E 16°55'/N 59°30'--N 54°35') y Paris (O 10°09'--O 3°05'). Red geográfica de 20' en 20' Orientado con lis en rosa de ocho vientosOrografía de perfilIndica sondas batimétricas, veriles, bajos y bancos de arenaLos límites entre los distintos condados aparecen diferenciados mediante coloresAparece trazada la línea de derrota entre las costas británicas y NoruegaConsta una nota sobre las observaciones que han servido de base para el levantamiento de la cartaTítulo enmarcado en cartela flanqueada por personajes mitológicos, y dedicatoria en cartela barroca, coronada por un blasón nobiliarioInserta : Shetland Islands. Escala [ca. 1:975000], 1 minuto de latitud [= 0,19 cm
Citorclinum laboutei Monniot F. & Millar 1988
No full text<i>Citorclinum laboutei</i> Monniot F. & Millar, 1988 <p>(Fig. 116B)</p> <p> <i>Citorclinum laboutei</i> Monniot F. & Millar, 1988: 321, fig. 1, pl. 1. Type locality: New Caledonia.</p> <p> MATERIAL EXAMINED. — <b>Papua New Guinea.</b> Coral Sea, eastern Fields, 10°00.66’S, 145°39.90’E, 10 m, 14. VI.1998 (MNHN A3 CIT 4).</p> <p>DESCRIPTION</p> <p>As in New Caledonia, the colonies of this polycitorid species form round heads, from 2 to 5 cm in diameter raised on peduncles. The tunic is white, vitreous, smooth and naked (Fig. 116B). Both siphons of the zooids are obvious at the colony surface, but they are not circled here with white rings. The zooids are well apart, perpendicular to the colony surface. The characters of the zooids are very consistent with six lobes at each siphon, about 16 longitudinal muscles on each side, three rows of numerous stigmata, a smooth stomach wall, and a long post-abdomen. The ovary lies in the intestinal loop, the testis in the posterior part of the post-abdomen. The heart lies to one side of the gut loop. A few embryos are being incubated in the cloacal cavity, but no tadpole is fully developed.</p> <p>REMARKS</p> <p>This monospecific genus is recorded again, and here for the first time. This extends its geographical distribution to the north.</p>Published as part of <i>Monniot, Françoise & Monniot, Claude, 2001, Ascidians from the tropical western Pacific, pp. 201-383 in Zoosystema 23 (2)</i> on page 235, DOI: <a href="http://zenodo.org/record/5391440">10.5281/zenodo.5391440</a>
The welfare market: the role of the private sector in the delivery of benefits and employment services
No full textDeterminacao das propriedades hidraulicas de solos aluviais atraves de descarga e drenos subterraneos.
No full textEstudou-se num campo piloto a caracterizacao das propriedades hidraulicas de solos aluviais, atraves de testes de descarga de drenos subterraneos. Recuperou-se e limpou-se um sistema de drenagem numa area de 1,3 ha, contendo drenos de manilhas de 60 cm de comprimento e 10 cm de diametro, com um total de cinco linhas de drenos de 70 m de comprimento, instalados a uma profundidade de 1,4 m e 20 m de espacamento. Instalou-se uma rede simetrica de 15 pocos de observacao e estruturas de saida nas linhas de drenos, para facilitar a medida da vazao. Esta area foi recarregada durante 15 dias, e durante o periodo de descarga fizeram-se medidas simultaneas, a cada duas horas da profundidade do lençol em todos os pocos e da vazao nas cinco linhas de drenos. Para analise de dados usou-se a formula de Hooghoudt, para fluxo permanente, e a de Glover Dujm, para fluxo nao permanente, objetivo principal do trabalho. A expressao para o fluxo nao permanente nao caracterizou adequadamente a condutividade hidraulica efetiva da area de fluxo, o fator de intensidade de drenagem e a porosidade drenavel do perfil que contribuiu para o fluxo aos drenos. O uso da equacao para o fluxo permanente proporcionou valores de condutividade hidraulica mais proximos aos valores representativos obtidos por outros metodos de campo. Contudo, e devido a grande estratificacao textural dos perfis, requer-se maior numero de testes com condicoes variaveis de recarga, para definir o melhor procedimento de analise dos resultados
Phase Distribution Efficiency of cm-Scale Ultrasonically Powered Receivers
No full textIn the domain of ultrasonically powered biomedical implants, there is an increasing interest in cm-scale ultrasonic receivers (RX). However, when a single-element transducer is used as the RX transducer, an uneven phase distribution across the RX area can significantly reduce the harvestable power. In this paper, we investigate the impact of lateral and angular misalignment on the acoustic field phase distribution across the RX surface. We show that, for a single-element RX transducer, lateral misalignment has minimal effect on the harvestable power, whereas even small angular misalignments can cause a considerable reduction, especially for larger RX sizes. We present a potential solution that consists of subdividing a large RX transducer (e.g. 20 × 20mm2) into smaller elements, which significantly improves power transfer efficiency by taking advantage of the smaller phase variation across the surface of each element. The trade-offs between achieving a minimum acceptable power transfer efficiency and managing the increased complexity in packaging and matching circuitry are also discussed.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Electronic Components, Technology and MaterialsBio-Electronic
Highly efficient laser-driven Compton gamma-ray source
No full textThe recent advancement of high-intensity lasers has made all-optical Compton scattering become a promising way to produce ultrashort brilliant gamma-rays in an ultra-compact system. However, so far achieved Compton gamma-ray sources are limited by low conversion efficiency and spectral intensity. Here we present a highly efficient gamma photon emitter obtained by irradiating a high-intensity laser pulse on a miniature plasma device consisting of a plasma lens and a plasma mirror. This concept exploits strong spatiotemporal laser-shaping process and high-charge electron acceleration process in the plasma lens, as well as an efficient nonlinear Compton scattering process enabled by the plasma mirror. Our full three-dimensional particle-in-cell simulations demonstrate that in this novel scheme, brilliant gamma-rays with very high conversion efficiency (higher than 10(-2)) and spectral intensity (similar to 10(9) photons/0.1%BW) can be achieved by employing currently available petawatt-class lasers with intensity of 10(21) W cm(-2). Such efficient and intense gamma-ray sources would find applications in wide-ranging areas. ©2019 The Author(s)
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