107 research outputs found
Experimental implementation of a NMR entanglement witness
Entanglement witnesses (EW) allow the detection of entanglement in a quantum
system, from the measurement of some few observables. They do not require the
complete determination of the quantum state, which is regarded as a main
advantage. On this paper it is experimentally analyzed an entanglement witness
recently proposed in the context of Nuclear Magnetic Resonance (NMR)
experiments to test it in some Bell-diagonal states. We also propose some
optimal entanglement witness for Bell-diagonal states. The efficiency of the
two types of EW's are compared to a measure of entanglement with tomographic
cost, the generalized robustness of entanglement. It is used a GRAPE algorithm
to produce an entangled state which is out of the detection region of the EW
for Bell-diagonal states. Upon relaxation, the results show that there is a
region in which both EW fails, whereas the generalized robustness still shows
entanglement, but with the entanglement witness proposed here with a better
performance
Nutritional characteristics and minerals of Lardosa cowpea landraces: a strategic legume species for the future
Cowpeas have been cultivated at least since the 8th century BC. [1; 2]. This grain legume (Vigna
unguiculata L. Walp.), one of Africa's natural food gifts to the world, is characterized by its high
nutritional value, ability to fix nitrogen and great tolerance to drought. The tolerance of this legume
to low fertility soils, high temperatures and scarce water regimes makes this one of the most
resistant crops to adverse edaphoclimatic conditions. It is certainly a very important culture in
southern European countries like Portugal.Cultivar-Rede de competências para o desenvolvimento sustentável e inovação no
setor Agroalimentar (CENTRO-01-0145-FEDER-000020).info:eu-repo/semantics/publishedVersio
Nutritional characteristics and minerals of Lardosa cowpea landraces : a strategic legume species for the future
Cowpeas have been cultivated at least since the 8th century BC. [1; 2]. This grain legume (Vigna unguiculata L. Walp.), one of Africa's natural food gifts to the world, is characterized by its high nutritional value, ability to fix nitrogen and great tolerance to drought. The tolerance of this legume to low fertility soils, high temperatures and scarce water regimes makes this one of the most resistant crops to adverse edaphoclimatic conditions. It is certainly a very important culture in southern European countries like Portugal.Cultivar-Rede de competências para o desenvolvimento sustentável e inovação no setor Agroalimentar (CENTRO-01-0145-FEDER-000020).info:eu-repo/semantics/publishedVersio
Physiological and thermographic response to heat stress in zebu cattle
AbstractThe objective of this study was to evaluate the heat tolerance of five zebu breeds using physical, physiological and hematological traits as well as thermographic responses. Forty cows of the Gir, Girolando, Nelore, Sindhi and Indubrasil breeds (eight cows each), approximately three years of age, were evaluated. Body weight, withers and hump heights as well as thoracic circumference were recorded. The density and length of the hair was obtained by collecting one square centimeter in the rump region and skin color using the CIELAB system. Rectal temperature, heart and respiratory rates were evaluated during the morning at 4:30h, and in the afternoon, at 14:30h, with six repetitions. Blood samples were collected for hematological evaluation. The surface temperature was obtained using an infrared camera FLIR® T400. Two images were taken from each animal, one laterally of the whole body and the other of the head region. Air temperature, wind speed, relative humidity were obtained from a mobile weather station. The statistics analysis included an analyzes of variance, principal factors, as well as cluster, discriminant and canonical analyzes, logistic regression and calculation of odds ratio. There were significant differences in the rectal temperature, heart and respiratory rates between breeds. Gir and Indubrasil breeds had the highest rectal temperatures. Breed was significant for surface temperatures and showed that physical and physiological factors affected breeds in different ways. Eye and brain surface temperatures were the most affected by environmental parameters. Also, environmental parameters affected packed cell volume and red cell number. Odds ratio test showed that the Gir breed was three times more likely to have higher rectal temperature compared with Sindhi as confirmed by the logistic regression. When the black globe temperature approached 35°C, the probability of the Gir animals having rectal temperatures above normal was approximately 70%. Gir was the breed least adapted to climate conditions of the experiment while the Sindhi and Girolando breeds showed the best physiological response to thermal stress
Crispy orange: a multi-purpose ready-to-eat snack
Póster premiado no evento IMTFWith the war in Ukraine reshaping world trade, there is now a surplus of orange production in
Europe, affecting the price in Portugal. Algarve is no exception, where producers are offering the
fruit for lack of buyers. An innovative solution is on the agenda: transforming this Mediterranean
diet fruit into a crispy ready-to-eat snack. The crispy orange snack is made exclusively from
dehydrated oranges (and no other ingredients) and is not yet available in the market. Not only can
this product be made from surplus orange production, but it can also be used in a variety of ways,
including as a crunchy, ready-to-eat snack, as an edible cake topper, or even as an ingredient in
beverages such as sparkling and tonic water, or gin. Following development, the product was fully
characterized regarding nutritional value, water activity (aw), microbiology and sensory analysis
with 66 consumers. Interestingly, unlike other orange products such as 100% orange juice, the
crispy orange snack has a high fibre content (10% of the recommended daily dose). This is a major
point as fibre is essential for regulating blood sugar levels. Furthermore, 95.5% of consumers who
tested the product would buy it if it were available.info:eu-repo/semantics/publishedVersio
Non-Markovian entanglement dynamics in coupled superconducting qubit systems
We theoretically analyze the entanglement generation and dynamics by coupled
Josephson junction qubits. Considering a current-biased Josephson junction
(CBJJ), we generate maximally entangled states. In particular, the entanglement
dynamics is considered as a function of the decoherence parameters, such as the
temperature, the ratio between the reservoir cutoff
frequency and the system oscillator frequency , % between
the characteristic frequency of the %quantum system of interest, and
the cut-off frequency of %Ohmic reservoir and the energy levels
split of the superconducting circuits in the non-Markovian master equation. We
analyzed the entanglement sudden death (ESD) and entanglement sudden birth
(ESB) by the non-Markovian master equation. Furthermore, we find that the
larger the ratio and the thermal energy , the shorter the
decoherence. In this superconducting qubit system we find that the entanglement
can be controlled and the ESD time can be prolonged by adjusting the
temperature and the superconducting phases which split the energy
levels.Comment: 13 pages, 3 figure
Efeito da desidratação sobre o valor nutricional de prunoideas
Neste trabalho utilizou-se a desidratação com o objetivo de encontrar soluções
para PME frutícolas localizadas no Distrito de Castelo Branco, relativamente ao
escoamento dos excedentes das produções sazonais de prunóideas e ao aproveitamento
de fruta com calibre reduzido e com pouca aceitação no mercado. Foram selecionados
quatro produtos (ameixas, cerejas, nectarinas e pêssegos) que, depois de lavados com
água potável, descaroçados e/ou fatiados, foram colocados num desidratador com 4 m3,
com capacidade para dois carros verticais de 12 tabuleiros com tapetes anti aderentes. O
programa de desidratação foi o seguinte: 60°C; humidade máxima 10%; velocidade 75%;
ciclo de desidratação até 26 horas. A desidratação reduziu o teor em água dos quatro
frutos (83,1% para 7,4%) e aw (0,968 para 0,372). A atividade antioxidante, os polifenóis
totais, o valor energético, o °Brix e a fibra aumentaram, respetivamente, 9,6, 6,1, 4,4, 4,3
e 3,4 vezes. As ameixas desidratadas apresentaram valores mais elevados de acidez e
polifenóis totais (p≤0,05), as cerejas de água, glucose, frutose e aw (p≤0,05), as nectarinas
de proteína, sacarose e fibra (p≤0,05) e os pêssegos de atividade antioxidante, gordura e
hidratos de carbono (p≤0,05). A cereja foi o único fruto que apresentou teores médios de
sódio acima do LQ (0,520 mg/100g). Conclui-se que a tecnologia utilizada apresenta
enorme potencial para conservação (sem aditivos) e consequente valorização de
prunóideas para comercialização fora de época.info:eu-repo/semantics/publishedVersio
Será a laranja-crocante uma solução para a valorização do setor dos citrinos?
Embora originária do sudoeste asiático, a laranja é um fruto que está presente na bacia do mediterrâneo há
vários séculos. A laranjeira tem sido cultivada na Península Ibérica desde o século IX1 e, embora não
nativa, a sua adaptabilidade às condições edafoclimáticas locais, em conjugação com o valor
nutricional e os benefícios para a saúde dos seus frutos, fazem da laranja um dos componentes incontornáveis
da dieta Mediterrânica2. A Europa (terceira maior produtora mundial) conta com os países mediterrânicos,
Portugal inclusive, um dos maiores produtores.M.C., A.C., A.M., V.V. são financiados pelo projeto Cultivar Iniciativa cofinanciada pelo Centro 2020, pelo Portugal 2020 e pela União Europeia através do FEDER.
Produto desenvolvido no âmbito do FUSILLI.
Este projeto recebeu financiamento do Horizonte 2020 – Programa-Quadro Comunitário de Investigação & Inovação da Comissão Europeia, sob Acordo
No.101000717info:eu-repo/semantics/publishedVersio
Reconhecimento e uso de plantas medicinais pelos idosos do Município de Marmeleiro - Paraná
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