2,122 research outputs found
Wall material selection for microencapsulating glicine max and punica granatum oils by spray drying.
Pomegranate seed oil, even though highly sensitive to oxidation, has been extensively studied due to its anti-inflammatory potential. Microencapsulation by spray drying can protect the oil and increase its shelf life. Modified starch, maltodextrin and gum arabic are evaluated by a mixture design to get the better wall material composition. The better response for drying process yield (41%) and oxidative stability (42%) were achieved using modified starch and gum arabic at the same proportion as wall material
Blending of pressed vegetable oils from pomegranate seeds and soybean to increase functional lipids consume.
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Previous issue date: 2018-05-28bitstream/item/177948/1/JAPLR-07-00237-Artigo-Blending-roma-and-soya-oil.pd
Multimode Hong-Ou-Mandel Interferometry
We review some recent experiments based upon multimode two-photon
interference of photon pairs created by spontaneous parametric down-conversion.
The new element provided by these experiments is the inclusion of the
transverse spatial profiles of the pump, signal and idler fields. We discuss
multimode Hong-Ou-Mandel interference, and show that the transverse profile of
the pump beam can be manipulated in order to control two-photon interference.
We present the basic theory and experimental results as well as several
applications to the field of quantum information.Comment: 20 pages, 14 figures, Brief Review to be published in Modern Physics
Letters
Adubação do Coffea arabica com óxido de magnésio associado ao gesso e micronutrientes.
O parque cafeeiro no Estado do Espírito Santo possui grande potencial de aumento de produção, necessitando principalmente de ser renovado, e manejado de maneira correta, principalmente em relação às práticas de calagem e adubação. Este trabalho teve por objetivo avaliar a influência da aplicação de óxido de magnésio associado ao gesso e a micronutrientes na forma de fertilizante granulado sobre os teores foliares de cálcio e magnésio, e a produtividade do cafeeiro arábica em experimento conduzido em campo. O experimento foi conduzido em uma lavoura de café arábica cv. Catucaí Amarelo 2SL, com início em dezembro de 2010 e término em junho de 2012. O delineamento experimental foi montado em blocos casualizados, utilizando seis tratamentos, com três repetições, sendo os tratamentos: Testemunha; NPK; NPK + calcário dolomítico; NPK + gesso agrícola; NPK + Gesso 70/30; NPK + Gesso 70/30 + Zn + B. Cada unidade experimental era composta de seis plantas de café. As amostras foliares foram coletadas do 3º e o 4º pares de folhas de ramos produtivos. A coleta dos grãos de café foi realizada na safra de 2010/2011 e na safra de 2011/2012. A aplicação dos tratamentos não elevaram os teores foliares de cálcio e magnésio para a faixa adequada do cafeeiro arábica em produção. A maior produtividade na safra 2011/2012 esta relacionada à aplicação do gesso 70/30 + Zn + B
Criticality in the 2+1-dimensional compact Higgs model and fractionalized insulators
We use a novel method of computing the third moment M_3 of the action of the
2+1-dimensional compact Higgs model in the adjoint representation with q=2 to
extract correlation length and specific heat exponents nu and alpha, without
invoking hyperscaling. Finite-size scaling analysis of M_3 yields the ratio
(1+alpha)/nu and 1/nu separately. We find that alpha and nu vary along the
critical line of the theory, which however exhibits a remarkable resilience of
Z_2 criticality. We propose this novel universality class to be that of the
quantum phase transition from a Mott-Hubbard insulator to a
charge-fractionalized insulator in two spatial dimensions.Comment: 4 pages, 3 figures, submitted to Phys. Rev. Let
Mapeamento de classes de declividade da sede do Polo Regional de Desenvolvimento Tecnológico dos Agronegócios do Vale do Paraíba, em Pindamonhangaba (SP).
Pasture degradation process is a complex phenomenon: its causes and consequences lead to a gradual decrease in the pasture's carrying capacity and culminate with its degradation. Inadequate pasture management may lead to degradation at its area, and consequently to a decrease in the amount of biomass available for the cattle. These degraded areas deserve attention, especially if located in high declivity areas, which are subject to processes such as soil erosion and therefore prone to the development of ravines and gullies. These declivity areas can be located using data from several sources, such as topographic maps and digital elevation models. The objective of this work is to determine topography declivity classes at the APTA (São Paulo State Agribusiness Technology Agency) farm, located in the city of Pindamonhangaba, SP, Brazil. The APTA farm was chosen due to its participation in the project "Development of Geotechnologies for Identifying and Monitoring Pasture Degradation Processes ? Geodegrade", whose objective is to develop geotechnologies for the identification and monitoring of pasture degradation levels. The sources used for obtaining altimetry data on the study area were 1:10,000, SRTM, ASTER DTM and TOPODATA data. The data were compiled in a georeferred database, and were used to generate different declivity maps. The maps generated from topographic maps (1:10,000) were the most detailed. The map was reclassified into 5 slope classes: 0°-3°; 3°-8°; 8°-20° and 20°-45° and were found 731.2 ha; 546.9 ha; 132.2 ha and 1.1 ha of area for each class, respectively. Future studies in Geodegrade project will be carried out using information such as biomass estimation according to declivity, with the expectation of evaluating if the studied degraded pastures are located in areas prone to landslides
Fidelity Between Partial States as Signature of Quantum Phase Transitions
We introduce a partial state fidelity approach to quantum phase transitions.
We consider a superconducting lattice with a magnetic impurity inserted at its
centre, and look at the fidelity between partial (either one-site or two-site)
quantum states. In the vicinity of the point of the quantum phase transition,
we observe a sudden drop of the fidelity between two one-site partial states
corresponding to the impurity location and its close vicinity. In the case of
two-site states, the fidelity reveals the transition point as long as one of
the two electron sites is located at the impurity, while the other lies
elsewhere in the lattice. We also determine the Uhlmann mixed state geometric
phase, recently introduced in the study of the structural change of the system
state eigenvectors in the vicinity of the lines of thermal phase transitions,
and find it to be trivial, both for one- and two-site partial states, except
when an electron site is at the impurity. This means that the system partial
state eigenvectors do not contribute significantly to the enhanced state
distinguishability around the point of this quantum phase transition. Finally,
we use the fidelity to analyze the total amount of correlations contained
within a composite system, showing that, even for the smallest two-site states,
it features an abrupt quantitative change in the vicinity of the point of the
quantum phase transition.Comment: 11 pages, 5 figure
Generalised Hong-Ou-Mandel Experiments with Bosons and Fermions
The Hong-Ou-Mandel (HOM) dip plays an important role in recent linear optics
experiments. It is crucial for quantum computing with photons and can be used
to characterise the quality of single photon sources and linear optics setups.
In this paper, we consider generalised HOM experiments with bosons or
fermions passing simultaneously through a symmetric Bell multiport beam
splitter. It is shown that for even numbers of bosons, the HOM dip occurs
naturally in the coincidence detection in the output ports. In contrast,
fermions always leave the setup separately exhibiting perfect coincidence
detection. Our results can be used to verify or employ the quantum statistics
of particles experimentally.Comment: 11 pages, 2 figures, more references adde
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