16,342 research outputs found
Eleonora Rueda, piano (Colombia)
No full textConcierto interpretado por Eleonora Rueda. Inició sus estudios musicales a temprana edad con la pianista Mireya Arboleda en el Conservatorio de la Universidad Nacional de Colombia, más tarde viajó a Viena para hacer estudios superiores y complementarios para su carrera en el conservatorio de música de esta ciudad; al tiempo estudio pedagogía musical graduándose con honores. Ha actuado como solista del Grupo de Cámara de la Orquesta Filarmónica de Bogotá (1981) y de la Orquesta Universitaria Olav Roots (1984).
En este concierto interpretó obras de Johann Sebastian Bach, F. J. Haydn, F. Chopin, S. Prokofiev y Albéniz
Fotografía UDBC013843
No full textFotografía del ejemplar Rueda, J. 20, determinado como Posoqueria latifoli
Fotografía UDBC015784
No full textFotografía del ejemplar Rueda, J. 11, determinado como Dalbergia ecastaphyllum en el año 201
Fotografía UDBC015469
No full textFotografía del ejemplar Rueda, J. 14, determinado como Talipariti pernambucense en el año 202
La nueva Ilustración de J. Habermas y K.-O. Apel (II): implicaciones y diálogos inconclusos de la filosofía dialógica
No full textParte primera de este trabajo: Sáez Rueda, L. La nueva Ilustración de Habermas y Apel: sistemática del proyecto y fundamentos teóricos. En: Segura Naya, A. (ed.), Historia universal del pensamiento filosófico. Vol. 5. Vizcaya: Liber Distribuciones Educativas, 2007. pp. 385-414. [http://hdl.handle.net/10481/35328]Exposición de las polémicas fundamentales implicadas en la nueva ilustración de K.-O. Apel y J. Habermas. El autor del texto intenta reconstuir lo más objetivamente posible, sin enjuiciar o valorar a esta filosofíaExposure fundamental controversies involved in the new illustration K.-O. Apel and Habermas. The author tries reconstuir text as objectively as possible, without judging or assessing this philosoph
Wilma Rueda Reyes, soprano (Colombia)
No full textConcierto interpretado por Wilma Rueda. Sus estudios musicales los inició en el Conservatorio de Música de la Universidad Nacional. Realizó estudios de técnica y perfeccionamiento vocal con el maestro Gilberto Escobar. Es, además, licenciada en Derecho y Ciencias Políticas de la Universidad de Santo Tomás.
Se ha presentado con oratorios y lied en las salas del Museo de Arte Colonial, en la de la Casa de Moneda del Banco de la República, en el auditorio ""León de Greiff"", de la Universidad Nacional, en la capilla de Nuestra Señora del Topo, en Tunja; en la Sata Tairona del Centro Colombo-Americano de Bogotá en interpretaciones de Música Contemporánea.
Igualmente, actuó como "" solista"" en la obra de Carl Orff “Carmina Burana”, presentada en el Teatro Colón, con la Orquesta Juvenil de Colombia, los coros “Ars Nova” y el coro infantil del Colegio Andino, bajo la dirección del maestro de la Sinfónica Juvenil Ernesto Díaz.
En el concierto interpretó obras de F. Schubert, J. Brahms, G. B. Pergolese, W. A. Mozart y G. A. Rossini
Pollution control in a decentralized economy : which level of government should subsidize what in Brazil
No full textSubsidies in Brazil essentially serve three purposes: (i) if assigned to the right level of government, they could reinforce the effectiveness of pollution taxes in reducing pollution; (ii) they offer an opportunity foradditional combinations of instruments and hence more flexibility in dealing with specific institutional characteristics of every state; and (iii) they can serve a purely"public relations"affect by showing that the federal government does not always rely on"sticks"but can also provide"carrots."The authors have four main messages of relevance to the Brazilian economy. First, carrots will not work without a stick. Subsidies of any type will not work without a coexisting pollution tax. Second, some carrots are better than others at achieving the government's objectives. In general, a state abatement subsidy is the more effective instrument to combine with a pollution tax. But when federal or state inspection capabilities are limited, monitoring subsidies may be an effective substitute. Third, increasing abatement subsidy rates can be counterproductive - tending to increase firm investment more than necessary and hence reduce the pollution tax base, while increasing subsidy costs. This can worsen the monitoring and inspection efforts and fiscal revenue. Finally, it is more effective to keep subsidy rates low if they are to be effective and sustainable and at the same time get the endorsement needed from state and federal fiscal administrations.Environmental Economics&Policies,Water and Industry,Pollution Management&Control,Public Sector Economics&Finance,Taxation&Subsidies
Ascidae, Blattisociidae and Melicharidae (Acari: Mesostigmata): zoogeographic analyses based on newly available databases
No full textSantos, Jandir C., Rueda-Ramírez, Diana, Demite, Peterson R., De Moraes, Gilberto J. (2018): Ascidae, Blattisociidae and Melicharidae (Acari: Mesostigmata): zoogeographic analyses based on newly available databases. Zootaxa 4377 (4): 542-564, DOI: 10.11646/zootaxa.4377.4.
Gamasellodes intermedius Rueda-Ramírez, Varela & Moraes, 2016, sp. nov.
No full textGamasellodes intermedius sp. nov. (Figs 7–12) Specimens examined. Holotype female and five paratype females from soil of a grassland (pH 5.5–6.1; organic matter 28–36 %; humidity 71–75 %; soil temperature 10–16 °C); collected by D. Rueda-Ramirez in April and June, 2010. Holotype and two paratype females deposited at ESALQ-USP; two paratype females deposited at MJHN- PUJ. Diagnosis. Anterior region of epistome with three subequal projections of uniform width, each bifurcate; podonotal shield with sparse and light reticulation behind j 4, smooth anteriorly, with a well define slender strip between z 3 and s 4, and with 17 pairs of setae (s 2 on unsclerotised cuticle); j 1, j 2 and z 1 almost in transverse line; opisthonotal shield mostly smooth, and with 16 pairs of setae (R 5 inserted on posterior angle of dorsal shield); with two pairs of rounded to ovoid metapodal plates; ventrianal shield with four pairs of setae in additional to circumanal setae (Jv 1, Zv 1 and Zv 2 on unsclerotised cuticle); peritreme short, extending anteriorly only to level of anterior margin of coxa IV (level of r 5); peritrematic plate extending anteriorly to level between z 1 and s 1, not fused to dorsal shield. Description (Female, six specimens measured). Gnathosoma. Fixed cheliceral digit 26 (25–27) long, with five teeth and setiform pilus dentilis; movable digit 26 (25–27) long, with two teeth; dorsal and antiaxial lyrifissures and dorsal cheliceral seta distinct (Fig. 7). Numbers of setae on palp trochanter–tarsus: 2, 5, 6, 14, 15; palp tarsal apotele bifurcate. Anterior region of epistome with three subequal projections of uniform width and each bifurcate (Fig. 8). Deutosternal groove (Fig. 9) delimited laterally by subparallel lines, with seven transverse lines, of which the most distal smooth and others with 9–15 denticles each. Internal malae distinctly separate from each other; lateral margins fimbriate. Corniculi hornshaped, about 1.6 times as long as their basal width. Seta h 3 about in longitudinal line with h 1 and mesad of and in transverse line with h 2. Setal measurements: h 1 12 (11–13), h 2 9 (8–10), h 3 15 (13–17), pc 14 (13–15), palp trochanter av 17 (16–17), palp trochanter pv 11 (10–11); setae aciculate and smooth. Dorsal idiosoma (Fig. 10). Idiosoma 240 (231–248) long and 112 (107–124) wide at widest level. Podonotal shield with sparse and light reticulation behind j 4, smooth anteriorly, with well define slender strip between z 3 and s 4; 123 (117–129) long and 110 (107–115) wide at widest level; with 17 pairs of setae, two pairs of distinguishable lyrifissures and two pairs of pores; j 1, j 2 and z 1 almost in transverse line. Unsclerotised cuticle laterad of podonotal shield with five pairs of setae (s 2, r 2 –r 5). Opisthonotal shield mostly smooth, with a line immediately behind J 1 extending diagonally to anterolateral corners, with scant lines by Z 1, a wavy line between J 3 and Z 3, and with a shallow ovoid depression between J 4 and J 5, more clearly discernable near posterior margin; 117 (114–119) long and 108 (105–110) wide; with 16 pairs of setae (R 5 inserted on posterior angle of dorsal shield), six pairs of distinguishable lyrifissures and two pairs of pores. Setae J 4 shorter than distance between their bases (24–26). Unsclerotised cuticle laterad of opisthonotal shield with four pairs of setae (R 1 – R 4) and a pair of lyrifissures (Rp). Setal measurements: j 1 11 (10–12), j 2 14 (11–16), j 3 18 (17–20), j 4 19 (17–20), j 5 16 (15–17), j 6 16 (15–17), J 1 16 (15–17), J 2 18 (16–19), J 3 18 (16–19), J 4 22 (20–24), J 5 13 (12–15), z 1 9 (9–10), z 2 17 (15–18), z 3 19 (17–20), z 4 21 (19–23), z 5 21 (20–22), z 6 20 (18–21), Z 1 21 (20–23), Z 2 21 (19–22), Z 3 22 (20–23), Z 4 22 (20–24), Z 5 22 (21– 24), s 1 15, s 2 12 (10–13), s 3 20 (18–23), s 4 22 (18–23), s 5 21 (20–23), s 6 20 (19–22), S 1 18 (16–20), S 2 19 (17– 20), S 3 21 (20–22), S 4 21 (20–22), S 5 20 (19–22), r 2 14 (13–15), r 3 25 (24–25), r 4 11 (10–12), r 5 11 (10–12), R 1 10 (9–10), R 2 10 (10–11), R 3 12 (11–12), R 4 13 (12–13), R 5 14 (13–15); setae aciculate and smooth. Ventral idiosoma (Fig. 11). Base of tritosternum 16 (15–16) long and 10 (9–10) wide proximally; laciniae 45 (44–46), separated for about 90 % of their total length, pilose. Pre-sternal area weakly sclerotised, with light punctation distinguishable in some specimens. Sternal shield, mostly smooth, with scant faint marginal striae; posterior margin lightly sclerotised and lightly concave; approximately 65 (58–71) long and 54 (50–56) wide at widest level; with three pairs of setae and three pairs of lyrifissures (iv 3 hardly distinguishable); distances st 1 –st 3 55 (55–57), st 2 –st 2 35 (34–35). Metasternal plates indistinguishable; however, fourth pair of sternal setae (st 4) on unstriate, lightly sclerotised region. Genital shield narrow, mostly smooth, punctate along convex posterior margin, bearing st 5 and extending posteriorly well behind coxa IV; 59 (56–61) long and 25 (24–26) wide at the widest level; distance st 5 –st 5 24 (23–25); lyrifissure iv 5 on unsclerotised cuticle posterolaterad of st 5. Two pairs of ovoid to rounded metapodal plates. Ventrianal shield reticulate; 66 (65–67) long and 92 (87–95) wide at widest level; with four pairs of setae (Jv 2 – Jv 5) in addition to circumanal setae; para-anal setae inserted at about mid-length of anal opening; the latter small, about 1 / 5 of shield length; 14 (13–15) long. Unsclerotised cuticle between genital and ventrianal shields three pairs of setae (Jv 1, Zv 1 and Zv 2), a pair of tiny transversely elongate platelets and a pair of lyrifissures. Unsclerotised cuticle laterad of and posteriorad to ventrianal shield with two pairs and a pair of lyrifissures, respectively. Anterior section of endopodal plate fused with sternal shield; section behind sternal shield indistinct. Exopodal plate reduced to triangular platelets between coxae II–III and III–IV and an elongate plate next to coxa II. Peritreme short, extending anteriorly only to level of anterior margin of coxa IV (level of r 5). Peritrematic plate abutting but not fused to dorsal shield at level of z 1 and s 1 and ending as a blunt and slightly curved extension at level of posterior margin of coxa IV; with a lyrifissure next to s 2 (median level of coxa II), a lyrifissure next to r 4 (median level of coxa III), and a lyrifissure and a pore posterior to stigma. Setal measurements: st 1 13 (11–14), st 2 12 (11–13), st 3 13 (11–13), st 4 12 (10–13), st 5 10 (10–11), Jv 1 14 (11–15), Jv 2 16 (15–17), Jv 3 17 (16–18), Jv 4 15 (13–17), Jv 5 23 (22–24), Zv 1 12 (11–13), Zv 2 13 (11–14), para-anal 23 (20– 24), post-anal 23 (22–24); setae aciculate and smooth. Spermathecal apparatus. Not distinguishable. Legs. Lengths: I: 211 (205–215); II: 150 (140–158); III: 139 (130–145); IV: 180 (170–189). Setation (legs I– IV): coxae: 2, 2, 2, 1; trochanters: 6, 5, 5, 5; femora: 12, 11, 6, 6; genua: 13, 11, 8, 9; tibiae: 13, 10, 8, 9; tarsi: not counted, 18, 18, 18. All legs with pretarsi containing a pair of strongly sclerotised claws (Fig. 12); median section of pulvilli of legs I–IV rounded. Adult male. Not found. Etymology. The specific name “ intermedius ” refers to fact that the morphological characteristics of this species are intermediate between Protogamasellus and Gamasellodes. Remarks. This species is most similar to Gamasellodes minor Athias-Henriot, 1961, described from Algeria, with similar ornamentation on the posterior part of the opisthonotal shield, setae J 4 shorter than the distance between their bases (respectively 18 and 23 in G. minor), and with short peritreme. However, the latter species differs from the species here described by having a continuous line connecting the bases of j 4 and z 3 and by having one less pair of opisthogastric setae (Zv 2). In addition, the opisthonotal shield of G. minor has only 15 pairs (R 5 inserted off dorsal shield). Although placed in Gamasellodes, the generic classification of this species is doubtful, because some characteristics are typical of Protogamasellus, namely the transverse line at level of setae J 1, while other characteristics are typical of Gamasellodes, namely the absence of a transverse line extending completely across the level of z 6, the presence of nine setae on genu IV and the anterior region of epistome most often with three pointed or distally denticulate projections. Some species of Gamasellodes have short peritreme (Moraes et al., 2016); however, except for G. minor, the peritreme extends at least to level of posterior half of coxa II.Published as part of Rueda-Ramírez, Diana, Varela, Amanda & De Moraes, Gilberto J., 2016, Soil mites of the families Ascidae, Blattisociidae and Melicharidae (Acari: Mesostigmata) from mountainous areas of Colombia, pp. 493-514 in Zootaxa 4127 (3) on pages 498-500, DOI: 10.11646/zootaxa.4127.3.5, http://zenodo.org/record/26820
A test of the fermionic dark matter nature of the supermassive compact object at the center of our galaxy
No full textThe extensive and continuous monitoring of the closest stars to the Galactic center has been producing over decades a large amount of high‐quality data of their positions and velocities. The explanation of these data, especially the S2 star motion, reveals the presence of a compact source, Sagittarius A* (Sgr A*), whose mass must be about 4 × 106 M⊙. This result has been protagonist of the awarded Nobel Prize in Physics 2020 to Reinhard Genzel and Andrea Ghez “for the discovery of a supermassive compact object at the centre of our galaxy.” Traditionally, the nature of Sgr A* has been attributed to a supermassive black hole (SMBH), even though a proof of its existence is absent. Further, recent data on the motion of the G2 cloud show that its post‐peripassage velocity is lower than the expected one from a Keplerian orbit around the hypothesized SMBH. An attempt to overcome this difficulty has used a friction force, produced (arguably) by an accretion flow whose presence is also observationally unconfirmed. We advance an alternative scenario that identifies the nature of the supermassive compact object in a highly concentrated core of dark matter (DM) made of fermions, that is, inos, which we here refer to as darkinos. This DM concentration is predicted by the core‐halo profile obtained from the Ruffini‐Argüelles‐Rueda fermionic DM model, which also fits the Galactic‐halo rotation curves. We show that the sole DM core, for 56 keV darkinos, explains the orbits of S2 and G2. No drag force or other external agents are needed, that is, their motion is purely geodesic. A core made of these darkinos becomes unstable against gravitational collapse into a BH for a mass of ∼108M⊙; hence, they can provide the BH seeds from which grow the observed central SMBHs in active galaxies, for example, M87
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