566 research outputs found
En busca del tiempo homérico con la mirada y la palabra de Antonio Prieto (lectura de "El ciego de Quíos")
No full textIn The blind person of Quíos, the novelist Antonio Prieto invents Homero's life feeding it with figures and facts from the Ilíada and, especially, from the Odyssey. The story is enriched by the historical knowledge about these great poems, and is framed in a rich mythological context. Beyond this, the novel reaches a transcendent meaning. We discover as narrative engine the Homeric effort to overcome the human fleetingness by means of the writing, thus creating a timeless link with the own longing of our author; this way, the novel offers us a maximum example of what Antonio Prieto termed as mythical fusion.En El ciego de Quíos, el novelista Antonio Prieto inventa la vida de Homero alimentándola con figuras y hechos procedentes de la Ilíada y, sobre todo, de la Odisea. El relato se enriquece con el conocimiento histórico en torno a los dos grandes poemas, y lo enmarca un amplio despliegue mitológico. Más allá, la novela alcanza un significado trascendente. Descubrimos como motor narrativo el esfuerzo homérico por vencer la fugacidad humana mediante la escritura, lo que crea un vínculo atemporal con el propio anhelo de nuestro autor; así, la novela nos ofrece un ejemplo máximo del fenómeno bautizado como fusión mítica por Antonio Prieto
Rhamma comstocki Johnson 1992
No full textRhamma comstocki Johnson, 1992 (Figures 13, 14, 15, 16, 35, 47, 56, 68) Rhamma comstocki Johnson, 1992: 137, figs. 52, 147. Image of holotype examined. Rhamma lecromi Johnson & Lugo 1997: 1, photoplate V figure A, B. Paratypes examined in ICN, topotypic material examined. Type material. Holotype male, Colombia, Bogotá, La Calera, subparamo, 3100 m, leg. L. Richter, December 1945, deposited AMNH. Taxonomic history and remarks. This species was described from the eastern range in Colombia near Bogotá. Rhamma lecromi Johnson & Lugo, 1997 was described by the same author several years later from a different location near Bogotá. We compared recently collected topotypical material and the type material of both species and we were unable to find any diagnostic features to separate them. Females of this species are variable even among individuals from the same locality. Distribution and variability. This species is endemic to the eastern cordillera. Males exhibit little variation along its range from Cundinamarca and Boyacá to de northern tip of the eastern cordillera in the Serranía del Perijá. In contrast, females are quite variable in ventral wing pattern and color, even those from the same locality (Figs. 14, 16). Diagnosis. The recognition of R. comstocki as a distinct species was detailed in the account for R. oxida. Material examined (30 ♂, 6 ♀). CUNDINAMARCA: 12 ♂, CP, Subachoque, El Tablazo, 3000 m, 12 / 10 / 2014, 05/01/ 2014, C. Prieto; 4 ♀, CP, Subachoque, El Tablazo, 3000 m, 12 / 10 / 2014, C. Prieto; 3 ♂, CP, Choachi, 3200 m, C. Prieto.; 3 ♂, JFLC, Subachoque, El Tablazo, 3400 m, 06/ 11 / 1994, 27/01/ 1996. Le Crom.; 3 ♂, JFLC, Bogotá, 3300 m, 12 / 10 / 1998, 13/02/ 1994; 2 ♂, JFLC; Villa Pinzón, 3450 m, 13 / 11 / 1994, 14/01/ 1995, Le Crom. BOYACA: 2 ♂, 2 ♀, CP, Güican, 3680 m, 18 /01/ 2009, 13/01/ 2009, C. Prieto; 1 ♂, CP, Tibasosa, 3200 m, C. Prieto; 2 ♂, JFLC, Tibasosa, 2800 m, 18 /03/ 2001, Le Crom. CESAR: 4 ♂, CP, Manaure, Sabana Rubia, 3000 m, 01/05/ 2015, C. Prieto.Published as part of Prieto, Carlos & Vargas, Maria A., 2016, Elfin butterflies of the genus Rhamma Johnson (Lepidoptera: Lycaenidae: Theclinae): A review of the Colombian species, pp. 323-342 in Zootaxa 4093 (3) on pages 330-331, DOI: 10.11646/zootaxa.4093.3.2, http://zenodo.org/record/26658
Pedaliodes adrianae Pyrcz & Prieto, n. sp.
No full text<i>Pedaliodes adrianae</i> Pyrcz & Prieto, n. sp. <p>(Figs. 3, 4, 10, 13)</p> <p> <b>Material examined.</b> HOLOTYPE (male): Colombia, Antioquia, Urrao, Páramo de Frontino, 6o24’23’’N, 76o06’18’’W, 2800 m, 0 8.2012, C. Prieto leg., MZUJ (to be deposited in MHN-UN); PARATYPES (1 male and 1 female): 1 male: Colombia, Antioquia, Urrao, Páramo de Frontino, 3100 m, 07.I.2012, i804, C. Prieto leg., CPC; 1 female: same data as the holotype (MZUJ).</p> <p> <b>Diagnosis.</b> HWV pattern is similar to several species of the <i>Pedaliodes phaea</i> group, all characterized by a wide postdiscal—submarginal lighter, yellowish area, which is nearly straight from vein M1 to anal margin. However, in contrast to these species, the wings of <i>P. adrianae</i> are dorsally dark brown, whereas in the <i>Pedaliodes phaea</i> and related species there are invariably conspicuous orange patches on both the FW and HW or restricted to HW. The only exceptions are <i>P. haydoni</i> and <i>P. baccara</i>, and the differences between <i>P. adrianae</i> and these two species were specified under <i>P. haydoni</i>. The female genitalia of <i>Pedaliodes adrianae</i> are similar in most respects to those of <i>Pedaliodes acjanaco</i> Lamas, Viloria & Pyrcz, 2010 (Pyrcz <i>et al</i>. 2010). The ductus bursae is similarly to other species of <i>Pedaliodes sensu stricto</i>, differing from <i>Neopedaliodes</i> Miller, Miller & Viloria, <i>Corderopedaliodes</i> Forster and <i>Physcopedaliodes</i> Forster, which are characterised by a strongly sclerotized ductus bursae, two-thirds the length of the corpus bursae, and slightly twisted (Pyrcz <i>et al</i>. 2013 <i>)</i>.</p> <p> <b>Description.</b> <i>Male</i> (Fig. 3). Head: Antennae slender, reaching nearly half length of the costa, naked, dorsally dark brown, ventrally orange brown, club formed gradually, slightly thicker than shaft, composed of 11 flagellomeres. Eyes chocolate brown, lustrous, covered with dense, black hair. Labial palpi two times as long as the head, covered ventrally with black and golden yellow hairy scales, laterally with brown and sandy yellow scales, and dorsally brown scales. Frons with a tuft of rather short, chocolate brown and golden yellow hair. Thorax: Dorsally black, covered with brown and golden brown hair, denser on patagium, tegulae and prothorax; ventrally black; legs brown, femora covered with long blackish hair, tibiae and tarsi with dense sandy yellow scales, tarsi with numerous blackish, short spines. FW (length: 27 mm, n=2) with a subacute apex, and gently concave, giving the impression of being lightly undulated due to the intermittently dark brown and longer fringes at vein ends and shorter, chestnut in the interveins. FWD almost uniform glossy dark brown, a shade lighter in distal one-third; scent patch large, roughly 3–4 mm wide, compact, extending in median area from base of M1 to anal margin, entering discal-cell. HW rounded, with undulating outer margin; fringes intermittently dark brown and milky white from apex to M3. HWD uniform dark brown from M3 to tornus; uniform dark brown, less glossy than the FW, slightly hairy in basal part and along anal margin. FWV dull medium brown, a shade lighter between postdiscal and submarginal line, a diffuse milky white costal streak along postdiscal line from costa to vein M3; outer margin auburn; a series of three or four minute white dots in subapical area from R4–R5 to M2–M3. HWV auburn, liberally speckled with a sandy yellow, ripple-like pattern; a wide sandy yellow band extending distally from postdiscal line to submarginal area, with distal part densely suffused with brown scales, with a sharp, and mostly straight inner edge from vein M2 to anal margin, and an irregular outer edge with two deep basal incision along veins M2 and M3, roughly parallel to outer margin; a row of four minute, oval submarginal whitish dots in M1– M2, M2–M3, M3–Cu1 and Cu1–Cu2, the former two slightly more prominent. Abdomen: Black, hairy, dorsally and laterally covered with black, ventrally covered with chestnut and sandy yellow scales. Male genitalia (Fig. 10) with dorsum of tegumen flat, uncus slender, gently arched, as long as tegumen dorsum, subunci long and slender, approximately 2/3 the length of uncus, pedunculus small, valvae roughly the length of tegumen+uncus, with a short, sharp dorsal process aligned with the acute distal extremity; saccus wide and shallow, aedeagus as long as saccus+valve, massive, flattened dorso ventrally, somewhat humped in the middle and with a sharp apical extremity, proximal opening 1/3 the length of the entire aedeagus, approximately the width of the remaining part of it.</p> <p> <i>Female</i> (Fig. 4). Head and Thorax: Similar to male except considerably paler on both upper and underside. FW length 27 mm. Abdomen: Female genitalia (Fig. 13) with papillae anales medium sized. Antrum enclosed by a wide basin strengthen from the inside by a strongly sclerotized slat-like lamella antevaginalis (a common feature of all examined species of <i>Pedaliodes sensu lato</i>). Bursa copulatrix oval, gradually narrowing toward posterior and gradually transforming into ductus bursae. Signa approximately half the length of corpus burse, parallel and wide, with a spiny surface. Ductus bursae wide, slightly sclerotized, two-thirds length of corpus bursae, slightly twisted. Ductus seminalis connecting to ductus bursae near its proximal opening.</p> <p> <b>Etymology.</b> This species is named after Adriana Maria Collazos Porras, an enthusiastic nature lover who accompanied the second author in many of his field expeditions in Colombia.</p> <p> <b>Comments.</b> This species is known exclusively from the Páramo Frontino massif in the northern part of the Colombian Western Cordillera.</p>Published as part of <i>Pyrcz, Tomasz W., Prieto, Carlos, Viloria, Angel L. & Andrade, Gonzalo, 2013, New species of high elevation cloud forest butterflies of the genus Pedaliodes Butler from the northern Colombian Andes (Lepidoptera, Nymphalidae, Satyrinae), pp. 528-538 in Zootaxa 3716 (4)</i> on pages 530-531, DOI: 10.11646/zootaxa.3716.4.2, <a href="http://zenodo.org/record/220316">http://zenodo.org/record/220316</a>
Earnings-related mandatory pensions : concepts for design
No full textThe author offers a framework for economic policy on mandatory earnings-related pensions. He does not discuss the gains and losses from mandating insurance and savings, nor the use of this policy as a vehicle for income redistribution. Instead, he concentrates on areas that are less well understood: the microeconomics, the macroeconomics, and the political economy of mandatory pensions. His analysis focuses on three main areas: insurance design, privatization, and degree of funding. In each area, he provides a checklist of design issues, drawn from international experience and economic analysis. For insurance, there are two sets of choices: between flat actuarial factor or individual actuarial factor and between defined benefit or defined contribution (in the sense of financial guarantee). For privatization, the essential choices are between private or nationalized provision, and between private or national demand. For funding, the choices are between funding or not funding, and between apparent funding or pay-as-you-go financing. Some combinations can be discarded. Privatization should not be combined with flat actuarial factors, for example, because private suppliers will compete for access to rents that accrue to workers who are awarded implicit subsidies. Privatization is compatible with apparent funding, but not with pay-as-you-go financing, because in the latter there are no funds to invest in the capital market. The policy choice is ultimately between two coherent designs whose relative advantages and drawbacks the author discusses. One, is an individual actuarial factor with privatized production and demand, with risk explicitly allocated to pensions, and with partial funding. Two, is a flat actuarial factor coupled with nationalized production, pay-as-you-go financing, and statutory promises of fixed real pensions (defined benefit).Banks&Banking Reform,Environmental Economics&Policies,Health Economics&Finance,Insurance&Risk Mitigation,Pensions&Retirement Systems
Renin and the (pro)renin receptor in the renal collecting duct: Role in the pathogenesis of hypertension
No full text252 - Max C. Schulze
No full textIncludes bibliographical references.Next generation rechargable batteries for electric vehicle and grid energy storage applications require greater energy densities and long cycle lifetimes than tradition intercalation Li-ion batteries. Replacing graphite with alloy anodes shows promise for increasing the lithium storage capacity of batteries, though the anodes suffer from mechanical instability and limited cycle lifetimes. Building off the promising behavior of Cu2Sb alloy anodes for Li-ion batteries, we show how cycle lifetimes of electrodeposited Cu-Sb thin-films can be further improved by controlling undesirable mechano-chemical interactions at the film-substrate interface.Great Minds in Research - Honorable Mention
Rhamma oxida Hewitson 1870
No full textRhamma oxida (Hewitson, 1870) (Figures 11, 12, 34, 46, 55, 72) Thecla oxida Hewitson, 1870: 212, 445, plate LXXXV, figs. 719, 718, 720; Draudt 1917–1924: 759; pl. 153 f. Rhamma disjuncta Johnson, 1992: 147, figs. 65, 160. Image of holotype examined. Type material. Lectotype male, “ Ecuador. Hewitson Coll. 79 - 69., Thecla oxida 3.”, “ Type ”, “B.M. Type No. Rh. 606 ”, “Genitalia K. Johnson xi 1983 ”. Deposited in BMNH. Taxonomic history and remarks. This species was described briefly by Hewitson (1870) from an indeterminate number of specimens from Ecuador. Johnson (1992) designated it as the type species of the genus Rhamma. The later author described R. disjuncta from the mountains of Costa Rican, a species subsequently synonymized by Robbins (2004) with R. oxida. Even though the holotype of R. disjuncta is most similar to the holotype of R. catamarca Johnson, 1992, we prefer to follow Robbins’ concept until new material of both species is available for study. Distribution and variability. This species is widely distributed in Ecuador; some specimens have been collected in southern Colombia. We were unable to assess variability. This species has been reared on Lupinus mutabilis Sweet in Ecuador (Arregui-Garcia, 1985). Diagnosis. This species can be distinguished from the mostly similar species, R. comstocki, by a conspicuous androconial brand on dorsal forewing that is faint in the upper margin of the discal cell of R. comstocki. Material examined (6 ♂, 3 ♀). CAUCA: 5 ♂, 3 ♀, CP: Totoró, La Horqueta, 2800 m, 15 /06/ 2013; C. Prieto. NARIÑO: 1 ♂, JFLC: Ipiales, 2400 m, x/ 1993, J.v. Benavides.Published as part of Prieto, Carlos & Vargas, Maria A., 2016, Elfin butterflies of the genus Rhamma Johnson (Lepidoptera: Lycaenidae: Theclinae): A review of the Colombian species, pp. 323-342 in Zootaxa 4093 (3) on pages 326-327, DOI: 10.11646/zootaxa.4093.3.2, http://zenodo.org/record/26658
On geographic barriers and Pleistocene glaciations: Tracing the diversification of the Russet-crowned Warbler (Myiothlypis coronata) along the Andes
No full textWe studied the phylogeography and plumage variation of the Russet-crowned Warbler (Myiothlypis coronata), from Venezuela to Bolivia, with focus on populations from Ecuador and northern Peru. We analyzed sequences of mitochondrial and nuclear genes, geographic distributions, as well as photographs of specimens deposited at museum collections. Phylogenetic analyses identified three major lineages formed by populations from: Venezuela and Colombia (M. c. regulus), Ecuador and northern Peru (M. elata, M. castaneiceps, M. orientalis, M. c. chapmani), and central Peru and Bolivia (M. c. coronata). We found further population structure within M. c. regulus and M. c. coronata, and population structure and complexity of plumage variation within the Ecuador-northern Peru lineage. Time-calibrated trees estimated that most intraspecific variation originated during the Pleistocene; however, this pattern may not be attributed to an increase in diversification rate during that period. We discuss these results in the context of the importance of geographic-ecological barriers in promoting lineage diversification along the Andes and put forward a preliminary taxonomic proposal for major lineages identified in this study. © 2018 Prieto-Torres et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited
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