156,816 research outputs found
"Contreras, nº 10" [Plano del palacio arabe de la Alhambra]
No full text1 positivo en b/n 238 x 177 mmPlano del palacio arabe de la Alhambra: con los descubrimientos hechos por D. Rafael Contreras, con escala 1:500. Rafael Contreras Muñoz, (1826-1890) fue arquitecto conservador de la Alhambra en 1847, precedido despues a su muerte por su hijo, Mariano Contreras Granja, y en su puesto anterioremente estuvo su padre, llamado tambien RafaelUnidad documenta
Loewner Theory in annulus II: Loewner chains
No full textLoewner Theory, based on dynamical viewpoint, proved itself to be a powerful tool in Complex Analysis and its applications. Recently Bracci et al. (J Reine Angew Math to appear, arXiv:0807.1594; Math Ann 344:947–962, 2009) and Contreras et al. (Revista Matemática Iberoamericana 26:975–1012, 2010) have proposed a new approach bringing together all the variants of the (deterministic) Loewner Evolution in a simply connected reference domain. This paper is devoted to the construction of a general version of Loewner Theory for the annulus launched in Contreras et al. (Trans Amer Math Soc to appear, arXiv:1011.4253). We introduce the general notion of a Loewner chain over a system of annuli and obtain a 1-to-1 correspondence between Loewner chains and evolution families in the doubly connected setting similar to that in the Loewner Theory for the unit disk. Furthermore, we establish a conformal classification of Loewner chains via the corresponding evolution families and via semicomplete weak holomorphic vector fields. Finally, we extend the explicit characterization of the semicomplete weak holomorphic vector fields obtained in Contreras et al. (Trans Amer Math Soc to appear, arXiv:1011.4253) to the general case
Continuidad de la función de dualidad de un espacio de Banach
No full textManuel D. Contreras MárquezTesis: Univ. Granad
Vaejovis tenamaztlei Contreras-Felix, Francke & Bryson 2015
No full textVaejovis tenamaztlei Contreras-Félix, Francke & Bryson, 2015 Figures 4, 35l, 36l, 3 hl, 38l, 39l, 40k, 41l, 52 Vaejovis tenamaztlei Contreras-Félix, Francke & Bryson, 2015: 133 –138, Figs: 2–14. Type material. Holotype male. MEXICO: Aguascalientes: Municipio Calvillo, 3 km east of “Alamitos” dam, Sierra del Laurel (N 21.73531°, W 102. 69753°, elev. 2440 m), VII-24-2012. Cols.: O. Francke, G. Contreras, D. Barrales & A. Valdez. 1 ♂ (CNAN–T0871). Examined. Paratypes: MEXICO: Aguascalientes: Same data as the holotype. 1 ♂, 3 ♀ (CNANT–0872). MEXICO: Aguascalientes, Municipio Calvillo, Los Alisos, Sierra del Laurel (N 21.725611° W 102.700389°, elev. 2415 m), I- 10-2011. Col.: J. C. Arenas. 1 ♂ (AMNH). Examined. Other specimens examined. MEXICO: Aguascalientes: Municipio Calvillo, Los Alisos, Sierra del Laurel (N 21.725611°, W 102.700389°, elev. 2415 m), VII-20-2010. Col.: R. W. Bryson Jr. 1 ♀ (AMNH), 5 adult ♀, 3 subadult ♂ (CNAN). MEXICO: Aguascalientes: Municipio Calvillo, 3 km east of “Alamitos” dam, Sierra del Laurel (N 21.73531°, W 102.69753°, elev. 2440 m), VII-242012. Cols.: O. Francke, G. Contreras, D. Barrales & A. Valdez. 2 adult ♂, 9 juvenile ♀ (CNAN-Sc13775). Diagnosis. Adult total length ranging from 19 mm to 26 mm (Fig: 52-a, b). Carapace (Fig: 35-l) on males shorter than metasomal segment V (Carapace L/MS-V 0.85 ±0.06), but as long or slightly longer on females [Carapace L/ MS-V 1.02±0.02], and longer than pedipalp femur in both males (Carapace L/Femur L 1.13±0.13) and females [Carapace L/Femur L [1.22±0.07]; anterior margin of carapace slightly concave, almost straight, without median notch. Tergite VII with median lateral and lateral carinae weak, composed of a discontinuous line of rounded granules, and both pairs of carinae not reaching posterior margin. Pectinal tooth count on males 16–17 (mode= 16), on females 13–14 (mode=14). Sternite V without a whitish spot on posterior edge; sternite VII with lateral carinae weak, composed of a cuticular ridge and some scattered granules. Metasomal segment I wider than long (MSI L/ W 0.7 ±0.01); intercarinal spaces on metasomal segments I–V shagreened; metasomal segment V wider than deep (MS-V W/D 1.15 ± 0.1). Vesicle (Fig: 36-l) long and slender (L/ W 2.16 ± 0.1; W/D 1.3 ± 0.03); dorsally with a conspicuous central depressed vesicular gland, deeper on adult males than on females and subadult males, on which it is almost absent. Pedipalp femur (Fig: 37-l) is less than three times longer than wide (L/ W 2.87 ± 0.13) [2.75 ± 0.15]. Patella (Fig: 38-l) less than three times longer than wide (L/ W 2.89 ± 0.11) [2.77 ± 0.13]; patellar prolateral carina weak, with few sharp scattered granules. Chela (Fig: 39, 40-l) rounded (CM L/W 2 ± 0.09 [2 ± 0.1]), as wide as deep (CM W/D 1 [1]); with prolateral median-ventro submedian carina feebly granular, but conspicuously more elevated than other carinae which are represented by low cuticular ridges. Pedipalp chela fingers dentate margins straight, without scalloping. Hemispermatophore (Fig: 41-l): Lamelliform (TL: 3.6; LL: 2;LW: 0.5). Lamina wider at the base, with a median apical crest; laminar hooks with three rounded ridges. Capsular lobe present, well-sclerotized and may present some faint, small granules (updated from Contreras-Fèlix et al., 2015). Full morphometric variation is given in tables 13 and 14. Setae variation is given in tables 9–12. Distribution. Known only from the two localities within the higher elevations of the Sierra del Laurel in southwestern Aguascalientes. This species probably occurs in other regions within the Sierra del Laurel, including adjacent areas in northern Jalisco. Natural history. found in winter during the dry season, as well as in the summer during the rainy season. Specimens were found underneath rocks in oak forest during the day. Specimens from Los Alisos were found along the base of a rock wall, which followed the crest of a hill. Among the specimens collected during July, three females had broods on their back, and the counts of newborns were 14, 18 and 22, respectively; the young were positioned randomly on the mother’s back.Published as part of A, Contreras-Félix Gerardo & Oscar, Francke B., 2019, Taxonomic revision of the " mexicanus " group of the genus Vaejovis C. L. Koch, 1836 (Scorpiones: Vaejovidae), pp. 1-100 in Zootaxa 4596 (1) on pages 82-83, DOI: 10.11646/zootaxa.4596.1.1, http://zenodo.org/record/265909
Akodon molinae Contreras 1968
No full textAkodon molinae Contreras, 1968. Zool. Platense, 1 (2):9 -12. TYPE LOCALITY: Argentina, Buenos Aires Prov., Partido de Villarino, Laguna Chasico. DISTRIBUTION: EC Argentina. COMMENTS: Subgenus Akodon, varius group sensu Myers (1989). See remarks under A. dolores.Published as part of Guy G. Musser & Michael D. Carleton, 1993, Order Rodentia - Family Muridae, pp. 501-755 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 691, DOI: 10.5281/zenodo.735309
Escudo de los Contreras
No full textEscudo perteneciente a D. Fernando de Contreras Pérez, conde de Corbul. En tablero lateral izquierdo sostenido por puttis entre roleos, armas de los Contreras. En campo de azur, torre almenada invertida con bordadura de gules con ocho aspas de oro. En el tablero del lado opuesto las armas de los Pérez: banda diagonal de gules en campo de oro con ocho aspas de oro y en cada hueco encima de sinople con oso rampante. Ambos escudos están coronados y presentan volutas laterales
Research fronts in library and information science in Spain
No full textPublications and author cocitations in library and information science in Spain during the period from 1985 to 1994 were analyzed as a measure of the structure, specificity and composition of research fronts in this country. A cocitation matrix developed from an ad hoc database was subjected to cluster analysis, multidimensional scaling and principal components analysis, The resulting cocitation maps identified specific areas of r~search and their knowledge bases. We inferred the degree of consolidation of the discipline of library and information science, and of the subdisciplines informetrics, librarianship and university affiliation, from the research activities revealed. In this respect, the conclusions from the study show the existence of several research fronts in Spanish literature the contents of which are in most cases difficult to compare with those in other countries. A lesser degree of maturity of research in this field is shown
Estudo de uma fonte de alimentação trifásica, alto fator de potência, comutação suave, com um único estágio de processamento de potência
No full textActo de investidura como doctor honoris causa de la Universidad de Sevilla de D. Enrique Graue Wiechers
No full textLaudatio a cargo del profesor D. Ramón María Serrera Contreras, catedrático emérito de Historia de América de la Facultad de Geografia e Historia de la Universidad de Sevilla
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