1,227 research outputs found
Robert Gerhard i l’avantguarda musical. Contribucions de Robert Gerhard a la música contemporà nia a Barcelona del 1929 al 1938
Treballs Finals de Grau d'Història de l'Art, Facultat de Geografia i Història, Universitat de Barcelona, Curs: 2013-2014, Tutor: Xosé AviñoaEl present treball té com a objecte d’estudi les contribucions de Robert Gerhard a la música contemporà nia a Barcelona durant el 1929 i el 1938. L’elecció d’aquest tema ve donada per un interès personal en l’art d’avantguarda i, concretament, en els compositors de la primera meitat del segle XX. El perÃode en el qual em centro coincideix amb l’any en que Gerhard tornà a Barcelona després de completar la seva formació com a compositor amb Schönberg, l’any 1929, i fins al seu exili, el 1938. A més a més, es tracta d’un perÃode emmarcat per esdeveniments socials que són de gran interès: la Dictadura de Primo de Rivera; l’Exposició Internacional de Barcelona del 1929; la Segona República i la Guerra Civil Espanyola
Long-term acute infections during a bovine viral diarrhea virus (BVDV) outbreak in dairy farm from Galicia (NW Spain)
An observational study describes an outbreak of bovine viral diarrhea virus (BVDV) in a dairy herd in Spain. The herd was subjected to a voluntary control program. In a sampling carried out in June 2020, bulk tank milk antibody levels increased compared to the previous sampling. Additionally, serum samples from 4 young heifers also tested positive for antibodies. Since the results were consistent with a recent infection, we proceeded to detect possible persistently infected (PI) animals using antigen ELISA (on serum/ear-notch samples), following the program guidelines. From this moment on, 42 animals tested positive for BVDV antigen, of which 17 were under typical acute infection (AI), 13 were deemed as PI, and eight died early on the farm before having information to determine their status. The remaining 4 showed intriguing test results consistent with a long-term AI since they tested BVDV positive in at least two antigen tests more than 3 weeks apart. Thus, one animal was positive until 80 days of age in serum, and others even for longer periods in ear-notch samples, until they finally tested negative for BVDV. Based on these results, longer follow-up may be necessary in BVDV positive animals to accurately confirm persistent infectionS
El movimiento estudiantil chileno : análisis de las demandas de los estudiantes y del impacto polÃtico de las movilizaciones
Conté: Treball de recerca i pòsterDurante la última década la sociedad chilena ha visto el resurgir de una juventud que, a priori considerada apática a la polÃtica, y contra todo pronóstico, tomó las calles en diferentes olas de protestas. Se trata de la "Revolución Pingüina" y el "Invierno Chileno", ocurridas en 2006 y 2011, respectivamente. El siguiente trabajo pretende entender cuáles son las demandas de dichas movilizaciones, haciendo hincapié en la necesidad de comprender primero el funcionamiento de un sistema educativo chileno en que la equidad y la calidad brillan por su ausencia. Asimismo, la finalidad última es comprobar en qué grado, y de qué tipo, ha sido el impacto polÃtico del movimiento estudiantilDurant la passada dècada la societat xilena ha vist el ressorgir d'una joventut que, considerada apà tica a la polÃtica, i contra tot pronòstic, va prendre els carrers en diverses onades de protestes. Es tracta de la "Revolució Pingüina" i de "l'Ivern Xilè", que van tenir lloc el 2006 i 2011, respectivament. El següent treball pretén entendre quines són les demandes d'aquestes mobilitzacions, fent èmfasi en la necessitat de comprendre primer el funcionament d'un sistema educatiu xilè en què l'equitat i la qualitat brillen per la seva absència. Aixà mateix, la finalitat última es comprovar en quin grau, i de quin tipus, ha estat l'impacte polÃtic del moviment estudianti
Vocabulari d'escenografia i maquinà ria escènica
• Vocabulari ordenat alfabèticament en català que abasta la terminologia tècnica de les professions d'escenògraf i maquinista escènic amb les correspondències en els següents idiomes: català , castellà , francs, italià , anglès i alemany. Incorpora Ãndex referencial de cadascun dels idiomes a la entrada en catalÃ
Nitrogen Fertilization and Harvest Management Improve Forage and Crude Protein Content in Crabgrass
Crabgrass (Digitaria spp.) is an annual summer grass that can provide high-quality forage, but optimal management strategies are unclear. Our objective was to compare the yield and quality of crabgrass (Mojo and Quick-N-Big) under different nitrogen rates and harvest management. The experimental design was a randomized complete block with five treatments and three replications for each crabgrass variety, totaling fifteen experimental units for both Mojo and Quick-N-Big, in adjacent sites. Treatments were nitrogen rates (0, 100, and 200 lb N/acre) and harvest management (cut once or twice per year) for two growing seasons (2020 and 2021). Total forage accumulation (TFA) increased with nitrogen fertilization for both cultivars. Mojo had the highest TFA in the first year (7000 lb DM/a/yr) while Quick-N-Big TFA was the highest in the second year (7635 lb DM/a/yr). The highest crude protein (CP) content was obtained with the highest N dose, ranging from 10.5 to 13% for both cultivars. Based on these results, N fertilization and harvest management can contribute to improving forage yield and crude protein of crabgrass varieties during the growing season in forage systems
Uso e cobertura da terra na bacia hidrográfica do rio Guapi - Macacu.
bitstream/CNPS-2009-09/14026/1/doc105_208_guapi_macacu.pd
Differential neurophysiological correlates of retrieval of consolidated and reconsolidated memories in humans: An ERP and pupillometry study
Consolidated memories can return to a labile state if they are reactivated by unpredictable reminders. To persist, active memories must be re-stabilized through a process known as reconsolidation. Although there is consistent behavioral evidence about this process in humans, the retrieval process of reconsolidated memories remains poorly understood. In this context, one fundamental question is whether the same or different neurophysiological mechanisms are involved in retrieval of consolidated and reconsolidated memories. Because it has been demonstrated that the exposure to the reconsolidation process may restructure and strengthen memories, we hypothesized distinct neurophysiological patterns during retrieval of reconsolidated memories. In addition, we hypothesized that interfering with the reconsolidation process using a new learning can prevent these neurophysiological changes. To test it, consolidated, reconsolidated and declarative memories whose reconsolidation process was interfered (i.e., picture-word pairs) were evaluated in humans in an old/new associative recall task while the brain activity and the pupillary response were recorded using electroencephalography and eyetracking. Our results showed that retrieval of reconsolidated memories elicits specific patterns of brain activation, characterized by an earlier peak latency and a smaller magnitude of the left parietal ERP old/new effect compared to memories that were only consolidated or whose reconsolidation process was interfered by a new learning. Moreover, our results demonstrated that only retrieval of reconsolidated memories is associated with a late reversed mid-frontal effect in a 600–690 time window. Complementarily, memories that were reactivated showed an earlier peak latency of the pupil old/new effect compared to non-reactivated memories. These findings support the idea that reconsolidation has an important impact in how memories are retrieved in the future, showing that retrieval of reconsolidated memories is partially supported by specific brain mechanisms.Fil: Campos Arteaga, G.. Pontificia Universidad Católica de Chile; ChileFil: Forcato, Cecilia. Instituto Tecnológico de Buenos Aires; Argentina. Consejo Nacional de Investigaciones CientÃficas y Técnicas; ArgentinaFil: Wainstein, G.. Pontificia Universidad Católica de Chile; Chile. The University of Sydney,; AustraliaFil: Lagos, R.. Universidad de Chile; ChileFil: Palacios GarcÃa, I.. Pontificia Universidad Católica de Chile; Chile. Universidad Diego Portales; ChileFil: Artigas, C.. Pontificia Universidad Católica de Chile; ChileFil: Morales, R.. Pontificia Universidad Católica de Chile; ChileFil: Pedreira, Maria Eugenia. Consejo Nacional de Investigaciones CientÃficas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de FisiologÃa, BiologÃa Molecular y Neurociencias. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de FisiologÃa, BiologÃa Molecular y Neurociencias; ArgentinaFil: RodrÃguez, E.. Pontificia Universidad Católica de Chile; Chil
The wideband backend at the MDSCC in Robledo. A new facility for radio astronomy at Q- and K- bands
The antennas of NASA's Madrid Deep Space Communications Complex (MDSCC) in
Robledo de Chavela are available as single-dish radio astronomical facilities
during a significant percentage of their operational time. Current
instrumentation includes two antennas of 70 and 34 m in diameter, equipped with
dual-polarization receivers in K (18 - 26 GHz) and Q (38 - 50 GHz) bands,
respectively. We have developed and built a new wideband backend for the
Robledo antennas, with the objectives (1) to optimize the available time and
enhance the efficiency of radio astronomy in MDSCC; and (2) to tackle new
scientific cases impossible to that were investigated with the old, narrow-band
autocorrelator. The backend consists of an IF processor, a FFT spectrometer
(FFTS), and the software that interfaces and manages the events among the
observing program, antenna control, the IF processor, the FFTS operation, and
data recording. The whole system was end-to-end assembled in August 2011, at
the start of commissioning activities, and the results are reported in this
paper. Frequency tunings and line intensities are stable over hours, even when
using different synthesizers and IF channels; no aliasing effects have been
measured, and the rejection of the image sideband was characterized. The first
setup provides 1.5 GHz of instantaneous bandwidth in a single polarization,
using 8192 channels and a frequency resolution of 212 kHz; upgrades under way
include a second FFTS card, and two high-resolution cores providing 100 MHz and
500 MHz of bandwidth, and 16384 channels. These upgrades will permit
simultaneous observations of the two polarizations with instantaneous
bandwidths from 100 MHz to 3 GHz, and spectral resolutions from 7 to 212 kHz.Comment: 9 pages, 8 figures. Accepted to Astronomy and Astrophysic
Estudo da viabilidade do agroturismo de base familiar em Cachoeiras de Macacu, RJ.
O agroturismo requer estudo de viabilidade de implantação e planejamento adequado para que se desenvolva de forma sustentável. Assim, este projeto visa prospectar a viabilidade agroturÃstica do municÃpio fluminense de Cachoeiras de Macacu, uma vez que este, além de exibir grande riqueza de atributos naturais, desenvolve expressiva atividade agrÃcola e pecuária, vinculada à agricultura familiar, apresentando potencial para a exploração de atividades turÃsticas de cunho ecológico, e também, associadas à s atividades rurais produtivas. Para tanto, foram levantados indicadores por meio de trabalhos de campo e consulta bibliográfica. Os dados coletados estão sendo integrados e apresentados em um relatório diagnóstico, o qual deverá subsidiar a elaboração de um plano para orientar o desenvolvimento de iniciativas de agroturismo no municÃpio. Os resultados preliminares estão mostrando que o municÃpio exibe potencialidade ao desenvolvimento da atividade entre os pequenos produtores familiares, porém, sua implantação irá requerer planejamento, orientação e acompanhamento em seus passos iniciais
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