369 research outputs found
Seleção do coqueiro anão verde para produção de polpa.
bitstream/item/90698/1/cot-62-2.pdfISSN 1678-1937
Study of infection by Babesia bovis and Anaplasma marginale in dairy water buffaloes in the state of São Paulo.
The aim of this study was to evaluate the prevalence of infection by Babesia bovis and Anaplasma margina/e in dairy water buffaloes infested by ticks on farms, either in exclusive buffalo herds or in in mixed herds along with cattle
Seleção de cultivares de coqueiro anão vermelho para produção do albúmen sólido em diferentes regiões do Nordeste.
Efeito da suplementação com o mineral bentonita sobre a infecção por helmintos em matrizes Santa Inês mantidas a pasto.
Avaliação da infecção por nematoides gastrintestinais e do desempenho de matrizes Santa Inês suplementadas com o mineral bentonita a pasto.
Realistic loophole-free Bell test with atom-photon entanglement
The establishment of nonlocal correlations, obtained through the violation of
a Bell inequality, is not only important from a fundamental point of view, but
constitutes the basis for device-independent quantum information technologies.
Although several nonlocality tests have been performed so far, all of them
suffered from either the locality or the detection loopholes. Recent studies
have suggested that the use of atom-photon entanglement can lead to Bell
inequality violations with moderate transmission and detection efficiencies. In
this paper we propose an experimental setup realizing a simple atom-photon
entangled state that, under realistic experimental parameters available to
date, achieves a significant violation of the Clauser-Horn-Shimony-Holt
inequality. Most importantly, the violation remains when considering typical
detection efficiencies and losses due to required propagation distances.Comment: 21 pages, 5 figures, 3 table, to appear in Nature Com
Avaliação da atividade antiparasitária da raiz de Manihot esculenta Crantz (mandioca) sobre nematoides gastrintestinais em ovinos.
Experimental estimation of the dimension of classical and quantum systems
An overwhelming majority of experiments in classical and quantum physics make
a priori assumptions about the dimension of the system under consideration.
However, would it be possible to assess the dimension of a completely unknown
system only from the results of measurements performed on it, without any extra
assumption? The concept of a dimension witness answers this question, as it
allows one to bound the dimension of an unknown classical or quantum system in
a device-independent manner, that is, only from the statistics of measurements
performed on it. Here, we report on the experimental demonstration of dimension
witnesses in a prepare and measure scenario. We use pairs of photons entangled
in both polarization and orbital angular momentum to generate ensembles of
classical and quantum states of dimensions up to 4. We then use a dimension
witness to certify their dimensionality as well as their quantum nature. Our
results open new avenues for the device-independent estimation of unknown
quantum systems and for applications in quantum information science.Comment: See also similar, independent and jointly submitted work of J. Ahrens
et al., quant-ph/1111.127
Avaliação da atividade antiparasitária de diferentes produtos do limoneno sobre nematoides gastrintestinais em ovinos.
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