Improvisação na música contemporânea de concerto : parâmetros para execução da cadenza da peça "The days fly by" de Frederic Rzewski

A presente pesquisa apresenta uma proposta de treinamento para a improvisação de uma cadenza na peça “The Days Fly By” de Frederick Rzewski. A improvisação é um aspecto que se manifesta de várias maneiras no trabalho e na trajetória deste compositor, sendo ele próprio pianista reconhecido por seus improvisos de cadenzas em concertos tradicionais. Seu processo de composição está intimamente relacionado ao da improvisação. É comum em suas composições a inclusão de uma seção em aberto para ser improvisada pelo intérprete. Utilizo os conceitos de referente, base de conhecimento de Jeff Pressing e ponto de partida de Bruno Nettl associados a um modelo de aprendizagem da improvisação proposto por Barry J. Kenny & Martin Gellrich. Esta pesquisa apresenta proposta de exercícios de improvisação fundamentados nos elementos detectados em uma análise da peça.

Comet 1P/Halley multifluid MHD model for the Giotto fly-by

The interaction of comets with the solar wind has been the focus of many studies including numerical modeling. We compare the results of our multifluid MHD simulation of comet 1P/Halley to data obtained during the flyby of the European Space Agency's Giotto spacecraft in 1986. The model solves the full set of MHD equations for the individual fluids representing the solar wind protons, the cometary light and heavy ions, and the electrons. The mass loading, charge-exchange, dissociative ion-electron recombination, and collisional interactions between the fluids are taken into account. The computational domain spans over several million kilometers, and the close vicinity of the comet is resolved to the details of the magnetic cavity. The model is validated by comparison to the corresponding Giotto observations obtained by the Ion Mass Spectrometer, the Neutral Mass Spectrometer, the Giotto magnetometer experiment, and the Johnstone Plasma Analyzer instrument. The model shows the formation of the bow shock, the ion pile-up, and the diamagnetic cavity and is able to reproduce the observed temperature differences between the pick-up ion populations and the solar wind protons. We give an overview of the global interaction of the comet with the solar wind and then show the effects of the Lorentz force interaction between the different plasma populations.

Host location by the fruit fly parasitoid Diachasmimorpha krausii : role of fruit fly species, life stage and host plant

1 Diachasmimorpha krausii is a braconid parasitoid of larval tephritid fruit flies, which feed cryptically within host fruit. At the ovipositor probing stage, the wasp cannot discriminate between hosts that are physiologically suitable or unsuitable for offspring development and must use other cues to locate suitable hosts. 2 To identify the cues used by the parasitoid to find suitable hosts, we offered, to free flying wasps, different combinations of three fruit fly species (Bactrocera tryoni, Bactrocera cacuminata, Bactrocera cucumis), different life stages of those flies (adults and larvae) and different host plants (Solanum lycopersicon, Solanum mauritianum, Cucurbita pepo). In the laboratory, the wasp will readily oviposit into larvae of all three flies but successfully develops only in B. tryoni. Bactrocera tryoni commonly infests S. lycopersicon (tomato), rarely S. mauritianum (wild tobacco) but never C. pepo (zucchini). The latter two plant species are common hosts for B. cacuminata and B. cucumis, respectively. 3 The parasitoid showed little or no response to uninfested plants of any of the test species. The presence of adult B. tryoni, however, increased parasitoid residency time on uninfested tomato. 4 When the three fruit types were all infested with larvae, parasitoid response was strongest to tomato, regardless of whether the larvae were physiologically suitable or unsuitable for offspring development. By contrast, zucchini was rarely visited by the wasp, even when infested with B. tryoni larvae. 5 Wild tobacco was infrequently visited when infested with B. cacuminata larvae but was more frequently visited, with greater parasitoid residency time and probing, when adult flies (either B. cacuminata or B. tryoni) were also present. 6 We conclude that herbivore-induced, nonspecific host fruit wound volatiles were the major cue used by foraging D. krausii. Although positive orientation to infested host plants is well known from previous studies on opiine braconids, the failure of the wasp to orientate to some plants even when infested with physiologically suitable larvae, and the secondary role played by adult fruit flies in wasp host searching, are newly-identified mechanisms that may aid parasitoid host location in environments where both physiologically suitable and unsuitable hosts occur.

Mission tales in the days of the dons, by Mrs. A.S.C. Forbes ... with nine full page illustrations and decorative drawings, by Langdon Smith.

http://www.archive.org/details/missiontalesday00forbrich

In vivo infection by Trypanosoma cruzi: The conserved FLY domain of the gp85/trans-sialidase family potentiates host infection

Trypanosoma cruzi is a protozoan parasite that infects vertebrates, causing in humans a pathological condition known as Chagas` disease. The infection of host cells by T. cruzi involves a vast collection of molecules, including a family of 85 kDa GPI-anchored glycoproteins belonging to the gp85/trans-sialidase superfamily, which contains a conserved cell-binding sequence (VTVXNVFLYNR) known as FLY, for short. Herein, it is shown that BALB/c mice administered with a single dose (1 mu g/animal, intraperitoneally) of FLY-synthetic peptide are more susceptible to infection by T. cruzi, with increased systemic parasitaemia (2-fold) and mortality. Higher tissue parasitism was observed in bladder (7.6-fold), heart (3-fold) and small intestine (3.6-fold). Moreover, an intense inflammatory response and increment of CD4(+) T cells (1.7-fold) were detected in the heart of FLY-primed and infected animals, with a 5-fold relative increase of CD4(+)CD25(+)FoxP3(+) T (Treg) cells. Mice treated with anti-CD25 antibodies prior to infection, showed a decrease in parasitaemia in the FLY model employed. In conclusion, the results suggest that FLY facilitates in vivo infection by T. cruzi and concurs with other factors to improve parasite survival to such an extent that might influence the progression of pathology in Chagas` disease.

The trail drivers of Texas : interesting sketches of early cowboys and their experiences on the range and on the trail during the days that tried men's souls: true narratives related by real cow-punchers and men who fathered the cattle industry in Texas /

Mode of access: Internet.

A reply to two pamphlets, entitled "Illustrations of the portuguese question, by a portuguese lawyer", and "The last days of the portuguese constitution, by Porchester, by an english civilian.

Mode of access: Internet.

Orangeism exposed, with a refutation of the charges, &c. &c. : brought against the Irish nation, by lawyer David Graham, of New York, in his defence of the Orangemen, tried in this city, on the 13th and 14th days of September, 1824, for assault and battery on a poor Irishman, on the twelfth day of July, 1824 /

Mode of access: Internet.

The romance of biography; or, Memoirs of women loved and celebrated by poets, from the days of the troubadours to the present age; a series of anecdotes intended to illustrate the influence which female beauty and virtue have exercised over the characters and writings of men of genius,

First published under title: Loves of the poets. London, 1829.

The history of the church of Christ; from the days of the apostles, till the famous disputation between Luther and Miltitz in 1520. With a continuation to the present time, by T. Haweis.

Mode of access: Internet.