Historia de la Cátedra de Teología del Colegio Mayor de Nuestra Señora del Rosario. 1653-1850

Esta obra pretende situar la Teología europea que comienza a trasplantarse a América en los albores de las universidades americanas, y luego la historia social de esta ciencia y su interacción con la sociedad hasta el momento de su brusco extrañamiento del claustro por la reforma universitaria de 1850. Los rosaristas todos encontrarán aquí una raíz vigorosa de la vida y originalidad de esta institución centenaria. El Archivo Histórico de la Universidad ha sido fuente primaria principal.

Carcinoma de tiroides una verdadera pandemia?

El diagnóstico de cáncer de tiroides se ha incrementado y las posibilidades de detección de una enfermedad subclínica son altas, toda vez que disponemos de herramientas de detección más sensibles y de fácil acceso. Por ende, el clínico requiere conocer la historia natural del nódulo tiroideo y del carcinoma papilar de tiroides de bajo riesgo para brindar a su paciente el mejor tratamiento basado en la evidencia clínica. El objetivo de esta revision es reconocer los elementos clínicos que han condicionado el aumento inusitado de casos de cáncer de tiroides. Conclusión: El sobrediagnóstico del cáncer de tiroides es una realidad, que se posibilita por el uso extendido de biopsia por aspiración con aguja fina ((BACAF)) después de la detección de un nódulo tiroideo, en gran parte de manera incidental, sin acarrear la mayoría de las veces un mejor pronóstico después de su tratamiento.

Del Río Grande de la Magdalena y la ‘producción’ del territorio caribeño: análisis de las tensiones políticas, económicas y sociales entre Cartagena de Indias, Barranquilla y Santafé de Bogotá durante la primera mitad del siglo XX

En el intento de aproximación a la comprensión de las especificidades del personaje que ocupa la presente investigación –Cecilia Porras–, tropezamos con algunos vacíos dentro del estudio del contexto regional. Porras nace en Cartagena, en una de las familias de élite de la región, pero opta por aproximarse a la ciudad de Barranquilla –e incluso colateralmente a Bogotá–, espacios que le brindaban condiciones de posibilidad sociales, económicas y políticas, muy distintas a las que ofrecía la Heroica. Pese a que en la bibliografía disponible es posible encontrar una gran variedad de análisis referentes a los espacios y momentos en los que Porras se desempeñó –la Cartagena y la Barranquilla de mediados del siglo XX–, notamos dificultades a la hora de visualizar el modo en que estos referentes espaciales y temporales determinaron los procesos de configuración del orden socio-político en el caso concreto de cada ciudad, así como en la manera en que estas interactuaron entre sí con el centro político del país –la ciudad andina de Santafé de Bogotá– y con el resto del mundo.

Los destinatarios del bachillerato en Galicia : estudio geogr??fico y social del alumnado orensano (1850-1910)

Se trata la dimensi??n sociol??gica de la ense??anza secundaria desde una visi??n generalizadora, donde se concluye que el Bachillerato nace como una ense??anza de ??lite, a la cual, pocos pueden acceder, dirigida a clases medias y al g??nero masculino. El estudio se centra en la regi??n gallega, concretamente en la Galicia interior decimon??nica, caracterizada por sus peculiares diferencias significativas, tanto en el n??mero como en la tipolog??a del alumnado respecto al contexto espa??ol. A partir de este estudio, se profundiza en el conocimiento de la estructura social gallega, en concreto, la orensana, donde se detecta la particular fisonom??a de la sociedad orensana y la evoluci??n de los grupos que constituyen la clase media y la peque??a burgues??a desde mediados del siglo XIX hasta principios del siglo XX. Se ofrecen datos que permiten el conocimiento de la estructura social y de las transformaciones que surgen en la sociedad orensana.

Diagnosing eclipse-induced wind changes

Responses in surface winds to solar eclipses have an almost mystical status but are difficult to detect in observations because of their transient nature. High spatial resolution (approx. 1.5 km grid) meteorological models now provide a new technique for their investigation. Measurements from the southern UK meteorological network during the 11 August 1999 total solar eclipse are compared with a high-resolution model ignorant of the lunar shadow’s influence. Differences between the model output and measurements at the eclipse time show transient eclipse zone temperature decreases of up to 3 degrees C, which also depressed the day’s maximum temperature compared with the model prediction. Coherent responses in temperature, and wind speed and direction measurements are detected in the inland cloud-free region (from 51 to 52 degrees N and −2 to 0 degrees E). A mean regional wind speed decrease of 0.7 m s−1 during the maximum eclipse hour is apparent with a mean anticlockwise wind direction change of 17 degrees; no such changes occurred in the model output. Such regional circulation changes are consistent with Clayton’s 1901 cold-cored eclipse cyclone hypothesis, which may be related to the anecdotal ‘eclipse wind’.

An intronic G run within HIV-1 intron 2 is critical for splicing regulation of vif mRNA

Within target T lymphocytes, human immunodeficiency virus type I (HIV-1) encounters the retroviral restriction factor APOBEC3G (apolipoprotein B mRNA-editing enzyme, catalytic polypeptide-like 3G; A3G), which is counteracted by the HIV-1 accessory protein Vif. Vif is encoded by intron-containing viral RNAs that are generated by splicing at 3' splice site (3'ss) A1 but lack splicing at 5'ss D2, which results in the retention of a large downstream intron. Hence, the extents of activation of 3'ss A1 and repression of D2, respectively, determine the levels of vif mRNA and thus the ability to evade A3G-mediated antiviral effects. The use of 3'ss A1 can be enhanced or repressed by splicing regulatory elements that control the recognition of downstream 5'ss D2. Here we show that an intronic G run (G(I2)-1) represses the use of a second 5'ss, termed D2b, that is embedded within intron 2 and, as determined by RNA deep-sequencing analysis, is normally inefficiently used. Mutations of G(I2)-1 and activation of D2b led to the generation of transcripts coding for Gp41 and Rev protein isoforms but primarily led to considerable upregulation of vif mRNA expression. We further demonstrate, however, that higher levels of Vif protein are actually detrimental to viral replication in A3G-expressing T cell lines but not in A3G-deficient cells. These observations suggest that an appropriate ratio of Vif-to-A3G protein levels is required for optimal virus replication and that part of Vif level regulation is effected by the novel G run identified here.

Patterns of oocyte development in natural habitat and captive Salminus hilarii Valenciennes, 1850 (Teleostei: Characidae)

Fecundity and oocyte development in Salminus hilarii female brood stock were analyzed with the aim of investigating the impact of migration impediment on oogenesis. Histological analyses of the ovaries were performed in adult females caught in two different environments-the TietA(a) River (natural) and captivity-and the gonadossomatic index, oocyte diameter and fecundity determined. Five germ cell development stages (oogonium, perinucleolar, cortical alveoli, vitellogenic, ripe) and two other structures (postovulatory follicles and atretic oocytes) were observed in females caught in the river. Captive animals lacked the ripe oocytes and postovulatory follicles and had a relatively higher number of atretic oocytes. Females in captivity are known to produce larger oocytes, and they release fewer eggs in each spawn (absolute fecundity) when compared with animals that are able to migrate. Our results suggest that the TietA(a) River is undergoing alterations which are being reflected in the reproductive performance of S. hilarii, mainly due to the presence of atretic oocytes in females caught in the river. The lack of postovulatory follicles and ripe oocytes in captive animals reveals that migratory impediment negatively impacts final oocyte maturation. However, the stage of maturation reached is adequate for ovulation induction with hormone manipulation.

Group Photo at a New York Trade School Commencement Ceremony

This is a group photo mainly comprised of the school's administrators taken at the 1958 commencement ceremony of the New York Trade School. Original caption reads, "Back Row - Left to Right: William F. Vanderbeek, Robert H. Scholl, Gurdon Simmon, Miss Marie Kaye, and Peter H. Vermilye. Front Row - Left to Right: Gilbert G. Weaver, George E. McLaughlin, John Clarke, Enders M. Voorhees, Ralph Cole, Frank Casino and Charles Leidig." Black and white photograph.

Helminthological records of six-banded Armadillos Euphractus sexcinctus (Linnaeus, 1758) from the Brazilian semi-arid region, Patos county, Paraiba state, including new morphological data on Trichohelix tuberculata (Parona and Stossich, 1901) Ortlepp, 1922 and proposal of Hadrostrongylus ransomi nov comb.

This work aimed to evaluate the gastrointestinal helminthfauna composition of six-banded armadillos from the Brazilian semi-arid region. Gastrointestinal contents of six road-killed adult animals from Patos County, Paraiba State, were analyzed. Six species of nematodes, comprising five genera and four families, were recovered from the analyzed animals. New morphological data on Trichohelix tuberculata is given, along with a new taxonomical proposal for Hadrostrongylus ransomi (Travassos, 1935) n. comb. This is the first record for parasitic helminths in this host from the Brazilian semi-arid.

Homenaje a Raúl Prebisch (1901-1986)

Se reúnen las presentaciones realizadas en abril de 2011, en la sede de CEPAL, con motivo de un homenaje al economista y Secretario Ejecutivo de CEPAL, Raúl Prebisch. En ellas se recogen reflexiones sobre la evolución y vigencia del pensamiento prebischiano, aspectos inéditos de su vida y testimonios de colegas que colaboraron con él en momentos cruciales de la historia de América Latina y del mundo de la posguerra.

Combination of CDF and D0 measurements of the W boson helicity in top quark decays

We report the combination of recent measurements of the helicity of the W boson from top quark decay by the CDF and D0 collaborations, based on data samples corresponding to integrated luminosities of 2.7-5.4fb -1 of pp̄ collisions collected during Run II of the Fermilab Tevatron collider. Combining measurements that simultaneously determine the fractions of W bosons with longitudinal (f 0) and right-handed (f +) helicities, we find f 0=0.722±0.081[±0.062(stat)±0.052(syst)] and f +=-0.033±0.046[±0.034(stat)±0.031(syst)]. Combining measurements where one of the helicity fractions is fixed to the value expected in the standard model, we find f 0=0.682±0. 057[±0.035(stat)±0.046(syst)] for fixed f + and f +=-0.015±0.035[±0.018(stat)±0.030(syst)] for fixed f 0. The results are consistent with standard model expectations. © 2012 American Physical Society.

Combination of the top-quark mass measurements from the Tevatron collider

The top quark is the heaviest known elementary particle, with a mass about 40 times larger than the mass of its isospin partner, the bottom quark. It decays almost 100% of the time to a W boson and a bottom quark. Using top-antitop pairs at the Tevatron proton-antiproton collider, the CDF and D0 Collaborations have measured the top quark's mass in different final states for integrated luminosities of up to 5.8fb -1. This paper reports on a combination of these measurements that results in a more precise value of the mass than any individual decay channel can provide. It describes the treatment of the systematic uncertainties and their correlations. The mass value determined is 173.18±0.56(stat)±0.75(syst)GeV or 173.18±0.94GeV, which has a precision of ±0.54%, making this the most precise determination of the top-quark mass. © 2012 American Physical Society.

Raúl Prebisch, 1901-1986

Includes bibliography

Raúl Prebisch, 1901-1986

Incluye Bibliografía

Niveles de orfandad y medición de la mortalidad adulta en poblaciones del pasado: el caso de los Países Bajos (La Haya, 1850-1880)

Incluye Bibliografía