956 resultados para Wagner, Christian, 1835-1918.
Resumo:
Rui Carita
Resumo:
ARAÚJO, M. M. ; MEDEIROS, M. D. . AS minundências da Biblioteca Olegário Vale (Caicó - RN, 1918-1920). Educação em Questão, v. 31, p. 186-208, jan./abr. 2008
Resumo:
Neste debate, historiadores latino-americanos comparam a pandemia de gripe de 1918-1919 com a que varre o continente em 2009, sobretudo as experiências de México, Argentina e Brasil. Analisam as estratégias adotadas nos dois momentos, com ênfase em isolamento, vigilância em portos e aeroportos, intervenções nas cidades. Comparam a atuação dos Estados nacionais e governos locais, a posição dos médicos e dos meios de comunicação e o comportamento das populações, especialmente no tocante ao medo e à morte. Analisam o desempenho das estruturas de assistência às populações e as medidas terapêuticas e profiláticas recomendadas por órgãos públicos de saúde, por interesses privados ligados à venda de medicamentos e pelas medicinas populares e caseiras. O debate trata, ainda, da influência que a experiência de 1918 teve sobre as avaliações da crise atual, bem como do legado que deixará para o futuro.
Resumo:
The guava tree pest that has been requesting larger control frequency, in the area of Jaboticabal - São Paulo in the last years, is the psilideo Triozoida limbata. Thus, the objectives of this research were: a) Compare control tactics T. limbata based on monitoring and selectivity of insecticide to decrease the applications; b) To register and to correlate the natural enemies in habitants in guava tree ecosystem with the key pest and with meteorological factors; c) See if the control of T. limbata affects the population of fruit flies and d) To verify the efficiency of appropriate insecticides to IMP, in control of T. limbata. The experiment was conducted in 2004, in an orchard of Paluma cultivar in Vista Alegre do Alto, SP. The used strategies were (doses in g.a.i./100L water): control; imidacloprid + beta-cyfluthrin (2.5 + 0.3); acetamiprid (4.0); fenpropathrin (15.0) and regional conventional treatment. It was concluding that is possible to reduce the number of applications of less aggressive insecticides to the environment and the man, with the adoption of monitoring of T. limbata and implementing the action level. The natural enemies' populations densities (Scymnus spp., Cycloneda sanguinea, Azia luteipes, Crysoperla spp., Polybia spp., Brachygastra ssp.) present positive correlations with the populations of T. limbata. Population fluctuations of T. limbata and natural enemies are not altered by meteorological factors (precipitation and temperature) in irrigated orchard. The population of Anastrepha spp. is minimized when of the applications is for control T. limbata. The insecticides imidacloprid, imidacloprid + beta-cyfluthrin, acetamiprid and fenpropathrin are efficient in the control of T. limbata.
Resumo:
All larval stages and the first crab instar of Paradasygyius depressus (Bell) were obtained in laboratory culture. Larval development consists of two zoeal stages, followed by the megalopa. Each larval stage is described in detail. Beginning with the first zoea, the duration of each stage was 4--7 (4.5 +/- 0.7), 4-5 (4.5 +/- 0.5), and 7 days, the megalopa and first crab instar appearing 11 +/- 1 and 15 days after hatching, respectively. A phylogenetic analysis of 21 genera of Majidae is provided based on 34 zoeal and three megalopal characters. The phylogenetic analysis resulted in four equally parsimonious trees 173 steps long (CI = 0.66, RI = 0.71, and RC = 0.47) supporting the monophyly of Oregoniinae, Majinae, and Inachinae (with the exclusion of Macrocheira de Haan incertae sedis). Based on general agreement of sister-group hypotheses, we provide sets of larval characters that define Oregoniinae, Majinae, and Inachinae. Our phylogenetic hypothesis suggests that Oregoniinae is the most basal clade within the Majidae, and Majinae and the clade (Epialtus H. Milne Edwards + Inachinae [excluding Macrocheira incertae sedis]) are sister taxa. Within Inachinae, all trees suggest that Inachus Weber and Macropodia Leach are sister taxa nested as the most derived clade, followed by Achaeus Leach, Pyromaia Stimpson, Paradasygyius Garth, Anasimus A. Milne-Edwards, and the most basal Stenorhynchus Lamarck. The sister-group relationships of the clade (Pisa Leach (Taliepus A. Milne-Edwards + Libinia Leach)), Mithrax Latreille and Microphrys H. Milne Edwards remained unresolved.
Resumo:
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
The karyotype of the grasshopper Spathalium helios Rehn 1918. (Orthoptera, Acridoidea, Ommexechidae)
Resumo:
A large sample of cosmic ray events collected by the CMS detector is exploited to measure the specific energy loss of muons in the lead tungstate (PbWO4) of the electromagnetic calorimeter. The measurement spans a momentum range from 5 GeV/c to 1 TeV/c. The results are consistent with the expectations over the entire range. The calorimeter energy scale, set with 120 GeV/c electrons, is validated down to the sub-GeV region using energy deposits, of order 100 MeV, associated with low-momentum muons. The muon critical energy in PbWO4 is measured to be 160+5 -68 GeV, in agreement with expectations. This is the first experimental determination of muon critical energy. © 2010 IOP Publishing Ltd and SISSA.
Resumo:
The CMS Collaboration conducted a month-long data-taking exercise known as the Cosmic Run At Four Tesla in late 2008 in order to complete the commissioning of the experiment for extended operation. The operational lessons resulting from this exercise were addressed in the subsequent shutdown to better prepare CMS for LHC beams in 2009. The cosmic data collected have been invaluable to study the performance of the detectors, to commission the alignment and calibration techniques, and to make several cosmic ray measurements. The experimental setup, conditions, and principal achievements from this data-taking exercise are described along with a review of the preceding integration activities. © 2010 IOP Publishing Ltd and SISSA.
Resumo:
The CMS Level-1 trigger was used to select cosmic ray muons and LHC beam events during data-taking runs in 2008, and to estimate the level of detector noise. This paper describes the trigger components used, the algorithms that were executed, and the trigger synchronisation. Using data from extended cosmic ray runs, the muon, electron/photon, and jet triggers have been validated, and their performance evaluated. Efficiencies were found to be high, resolutions were found to be good, and rates as expected. © 2010 IOP Publishing Ltd and SISSA.
Resumo:
The performance of the Local Trigger based on the drift-tube system of the CMS experiment has been studied using muons from cosmic ray events collected during the commissioning of the detector in 2008. The properties of the system are extensively tested and compared with the simulation. The effect of the random arrival time of the cosmic rays on the trigger performance is reported, and the results are compared with the design expectations for proton-proton collisions and with previous measurements obtained with muon beams. © 2010 IOP Publishing Ltd and SISSA.