1,337 research outputs found
Potencial forrageiro da Brachiaria brizantha cv. Marandu sob diferentes cargas animal e dosificacao com anti-helmitico em solo de cerrado.
bitstream/item/137570/1/PESQ-EM-ANDAMENTO-25.pdfCNPGC
Reação de genótipos de trigo ao mosaico comum - análise de dados 2010.
bitstream/item/62576/1/2011comunicadotecnicoonline292.pd
Reação de genótipos de trigo ao BYDV - PAV, agente causal do nanismo amarelo: análise de dados 2010.
bitstream/item/62588/1/2011comunicadotecnicoonline297.pd
Ocorrencia e sazonalidade de besouros copro/necrofagos (Coleoptera: scarabaeidae), em massas fecais de bovinos, na regiao de cerrados do Mato Grosso do Sul.
bitstream/item/137688/1/PESQ-EM-ANDAMENTO-48.pdfCNPGC
Identificação das espécies e a resistência de parasitos gastrintestinais de ovinos a anti-helmínticos em Mato Grosso do Sul.
bitstream/item/139529/1/COT-108.pd
An active state of the BL Lac Object Markarian 421 detected by INTEGRAL in April 2013
Multiwavelength variability of blazars offers indirect insight into their
powerful engines and on the mechanisms through which energy is propagated from
the centre down the jet. The BL Lac object Mkn 421 is a TeV emitter, a bright
blazar at all wavelengths, and therefore an excellent target for variability
studies. Mkn 421 was observed by INTEGRAL and Fermi-LAT in an active state on
16-21 April 2013. Well sampled optical, soft, and hard X-ray light curves show
the presence of two flares. The average flux in the 20-100 keV range is 9.1e-11
erg/s/cm2 (~4.5 mCrab) and the nuclear average apparent magnitude, corrected
for Galactic extinction, is V ~12.2. In the time-resolved X-ray spectra (3.5-60
keV), which are described by broken power laws and, marginally better, by
log-parabolic laws, we see a hardening that correlates with flux increase, as
expected in refreshed energy injections in a population of electrons that later
cool via synchrotron radiation. The hardness ratios between the JEM-X fluxes in
two different bands and between the JEM-X and IBIS/ISGRI fluxes confirm this
trend. During the observation, the variability level increases monotonically
from the optical to the hard X-rays, while the large LAT errors do not allow a
significant assessment of the MeV-GeV variability. The cross-correlation
analysis during the onset of the most prominent flare suggests a monotonically
increasing delay of the lower frequency emission with respect to that at higher
frequency, with a maximum time-lag of about 70 minutes, that is however not
well constrained. The spectral energy distributions from the optical to the TeV
domain are satisfactorily described by homogeneous models of blazar emission
based on synchrotron radiation and synchrotron self-Compton scattering, except
in the state corresponding to the LAT softest spectrum and highest flux.Comment: 11 pages, 6 figures, in press in A&
Epidemiologia dos nematódeos gastrintestinais em bovinos de corte nos cerrados e o controle estratégico no Brasil.
Prevalência das espécies. OPG e imunidade adquirida. Larvas na pastagem. Hipobiose. Mortalidade de animais. Integração entre os helmintos do abomaso. Anorexia. Faixa etária, prejuízos e controle. Custo/Benefício.bitstream/item/104809/1/Epidemiologia-dos-nematoideos-gastrintestinais.pd
Contextual factors among indiscriminate or larger attacks on food or water supplies, 1946-2015
This research updates previous inventories of malicious attacks on food and water to include data from 1946 through mid-2015. A systematic search of news reports, databases and previous inventories of poisoning events was undertaken. Incidents that threatened or were intended to achieve direct harm to humans, and that were either relatively large (number of victims > 4 or indiscriminate in intent or realisation were included. Agents could be chemical, biological or radio-nuclear. Reports of candidate incidents were subjected to systematic inclusion and exclusion criteria as well as validity analysis (not always clearly undertaken in previous inventories of such attacks). We summarise contextual aspects of the attacks that may be important for scenario prioritisation, modelling and defensive preparedness. Opportunity is key to most realised attacks, particularly access to dangerous agents. The most common motives and relative success rate in causing harm were very different between food and water attacks. The likelihood that people were made ill or died also varied by food/water mode, and according to motive and opportunity for delivery of the hazardous agent. Deaths and illness associated with attacks during food manufacture and prior to sale have been fewer than those in some other contexts. Valuable opportunities for food defence improvements are identified in other contexts, especially food prepared in private or community settings
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