179,988 research outputs found
An Evening of Song, March 26, 1996
This is the concert program of the Evening of Song performance on Tuesday, March 26, 1996 at 6:00 p.m., at the Boston University Concert Hall, 855 Commonwealth Avenue, Boston, Massachusetts. Works performed were "Per pietà" from Il Floridoro by Allessandro Stradella, Amaryllis by Louis XIII, "Five Eyes" from Op. 9, No. 3 by C. Armstrong Gibbs, Se tu m'ami, se sospiri by Alessandro Parisotti, Go 'way from my window by John Jacob Niles, Spirate Pur, spirate by Stefano Donaudy, Vorschneller Schwur, Op. 95 No. 5, Vergebliches Ständchen, Op. 84 No. 4, and Von ewiger Liebe Op. 43 No. 1 by Johannes Brahms, from The Nantucket Songs by Ned Rorem, from Siete canciones populares Españolas by Manuel de Falla, "Ständchen" from Sechs Dedichte, Op. 35 No. 2 by Robert Schumann, "Ständchen" Op. 106 No. 1 from Five Songs by Johannes Brahms, "Ständchen" from Schwangengesang D. 957/4 by Franz Schubert, "Ständchen" Op. 17 No. 2 from Sechs Lieder by Richard Strauss, Un moto di gioia from Le Nozze di Figaro D. 492 by Wolfgang Amadeus Mozart, O Peace, thou fairest child of heaven from Alred, The Owl, and from Love's Labors Lost by Thomas Augustine Arne, from Quatre chanson de jeunesse by Claude Debussy, Se i miei sospiri by Francois Joseph Fétis, Ici bas! by Gabriel Fauré, The Cherry Tree by C. Armstrong Gibbs, from Hermit Songs, Op. 29 by Samuel Barber, and Cuatro Madrigales Amatorios by Joaquin Rodrigo. Digitization for Boston University Concert Programs was supported by the Boston University Humanities Library Endowed Fund
The ‘Trendiness’ of Sleep: An Empirical Investigation into the Cyclical Nature of Sleep Time
Using Canadian time use data, we exploit exogenous variation in local unemployment rates to investigate the cyclical nature of sleep time and show that for both men and women, sleep time decreases when the economy is doing relatively better. Our results suggest that in a recession Canadians sleep an average of 2 hours and 34 minutes more per week, or 22 minutes more per day. Given the importance of even small changes in sleep time on measures of cognitive functioning such as reaction time and concentration, our findings may help explain the countercyclical nature of mortality. Further, as we find that sleep is affected by the same economic variables (notably the unemployment rate) that affect market work time, our results also contribute to the limited literature that shows that sleep time should not be treated as exogenously determined, but, like any other resource, determined by its relative cost.Business Cycles, Sleep.
Culex tarsalis is a competent vector species for Cache Valley virus
Background: Cache Valley virus (CVV) is a mosquito-borne orthobunyavirus endemic in North America. The virus is
an important agricultural pathogen leading to abortion and embryonic lethality in ruminant species, especially
sheep. The importance of CVV in human public health has recently increased because of the report of severe
neurotropic diseases. However, mosquito species responsible for transmission of the virus to humans remain to be
determined. In this study, vector competence of three Culex species mosquitoes of public health importance, Culex
pipiens, Cx. tarsalis and Cx. quinquefasciatus, was determined in order to identify potential bridge vector species
responsible for the transmission of CVV from viremic vertebrate hosts to humans.
Results: Variation of susceptibility to CVV was observed among selected Culex species mosquitoes tested in this
study. Per os infection resulted in the establishment of infection and dissemination in Culex tarsalis, whereas Cx.
pipiens and Cx. quinquefasciatus were highly refractory to CVV. Detection of viral RNA in saliva collected from
infected Cx. tarsalis provided evidence supporting its role as a competent vector.
Conclusions: Our study provided further understanding of the transmission cycles of CVV and identifies Cx. tarsalis
as a competent vector
Mapping in the Arctic Ocean in Support of a Potential Extended Continental Shelf
Under Article 76 of The United Nations Convention on the Law of the Sea (UNCLOS; U.N. 1997), coastal states may, under certain circumstances, gain sovereign rights over the resources of the seafloor and subsurface of “submerged extensions of their continental margin” beyond the recognized 200 nautical mile (nmi) limit of their Exclusive Economic Zone (EEZ). The establishment of an “extended continental shelf” (ECS) under Article 76 involves the demonstration that the area of the ECS is a “natural prolongation” of a coastal state’s territorial landmass and then the application of a series of formulae and limit lines that are based on determination of the “foot of the slope,” (defined in Article 76 as the maximum change in gradient at it’s base), the underlying sediment thickness, and the locations of the 2500 m isobath and the 350 nmi line from the territorial sea base line. Although the United States has not yet acceded to the UNCLOS, increasing recognition that implementation of Article 76 could confer sovereign rights over large and potentially resource-rich areas of the seabed beyond its current 200 nautical mile (nmi) limit has renewed interest in the potential for accession to the treaty and spurred U.S. efforts to map area of potential “extended continental shelf”
\u3ci\u3ePolistes Dominula\u3c/i\u3e (Christ) (Hymenoptera: Vespidae: Polistinae) Recorded from Nebraska
Polistes dominula (Christ), a Palearctic paper wasp that has established in various areas of North America, is reported for the first time from the state of Nebraska based on specimens from the city of Lincoln. Potential implications of its presence in Nebraska are discussed
Seafloor mapping in the Arctic: support for a potential U.S. extended continental shelf
For the United States, the greatest opportunity for an extended continental shelf under UNCLOS is in the ice-covered regions of the Arctic north of Alaska. Since 2003, CCOM/JHC has been using the icebreaker Healy equipped with a multibeam echosounder, chirp subbottom profiler, and dredges, to map and sample the region of Chukchi Borderland and Alpha-Mendeleev Ridge complex. These data have led to the discovery of several new features, have radically changed our view of the bathymetry and geologic history of the area, and may have important ramifications for the determination of the limits of a U.S. extended continental shelf under Article 76
- …
