Vortex-Antivortex Lattice in Ultra-Cold Fermi Gases

We discuss ultra-cold Fermi gases in two dimensions, which could be realized in a strongly confining one-dimensional optical lattice. We obtain the temperature versus effective interaction phase diagram for an s-wave superfluid and show that, below a certain critical temperature T_c, spontaneous vortex-antivortex pairs appear for all coupling strengths. In addition, we show that the evolution from weak to strong coupling is smooth, and that the system forms a square vortex-antivortex lattice at a lower critical temperature T_M.Comment: Submitted to Physical Review Letter

Service quality in airport hotel chains through the lens of online reviewers

Airport hotel chains target the specific and important segment of accommodation near airports, thus benefiting from travelers seeking to stay near an airport. This study addresses service quality by analyzing TripAdvisor online reviews over units from both a high-end and a low-end chain in five European cities (Amsterdam, Brussels, Frankfurt, London, Paris). Using text mining and topic modeling, ten heat matrices were drawn (one per unit) to summarize the main services characterizing the computed topics. Seven hypotheses grounded on existing literature were tested, from which some interesting findings emerged (e.g., related to transfer services, staff, food and beverage, cleanliness, and punctuality). This study contributes to the standardization versus adaptation debate by unveiling a globalized strategy in staff management and breakfast services, while bar services adopt a localized strategy. Transportation services, while not offered by the hotels, are frequently mentioned, which signals hoteliers to interact with local authorities to improve accessibilities.info:eu-repo/semantics/acceptedVersio

Anti-cancer potential of Fasciola hepatica extracts

Fascioliasis is a food borne disease caused by infection with a liver fluke termed Fasciola (F.) hepatica. Fascioliasis, as a neglected tropical disease, commonly affects poor people from developing countries. It has been estimated that at least 2.6 million people are infected with fascioliasis worldwide. According to the International Agency for Research on Cancer, two other liver flukes Opistorchis viverrini and Clonorchis sinensis) have been recognized as definitive causes of cancer (IARC, 2012). On the other hand even long-lasting and/ or repeated F. hepatica infections have not been associated with cancer, so far. There are any known causative associations between this parasite and cholangiocarcinoma or liver cancer.N/

Anti-cancer potential of Fasciola hepatica extracts

Fascioliasis is a food borne disease caused by infection with a liver fluke termed Fasciola (F.) hepatica. Fascioliasis, as a neglected tropical disease, commonly affects poor people from developing countries. It has been estimated that at least 2.6 million people are infected with fascioliasis worldwide. According to the International Agency for Research on Cancer, two other liver flukes Opistorchis viverrini and Clonorchis sinensis) have been recognized as definitive causes of cancer (IARC, 2012). On the other hand even long-lasting and/ or repeated F. hepatica infections have not been associated with cancer, so far. There are any known causative associations between this parasite and cholangiocarcinoma or liver cancer.N/

Adubação N, P e K na cultura do arroz, em agricultura familiar, no município de São Sebastião da Boa Vista, Marajó, PA.

O objetivo deste trabalho foi definir a dose mais econômica da fórmula comercial (10:28:20), como fonte de N, P, K para a cultura de arroz, variedade BRS Aimoré, no município de São Sebastião da Boa Vista, Marajó, Pará. A pesquisa foi conduzida em área de agricultor familiar, em Latossolo Amarelo distrófico. O delineamento experimental foi blocos casualizados, com cinco tratamentos e quatro repetições, totalizando vinte parcelas. Os tratamentos foram cinco níveis (0, 100, 200, 300 e 400 kg ha-1) da fórmula comercial (10:28:20). As parcelas experimentais foram constituídas por oito linhas de plantio, com espaçamento de 0,40 m x 0,20 m com área útil de 2,40 m x 5,00 m, totalizando 12,0 m2. O preparo da área foi mecanizado (aração e gradagem) e o plantio foi com plantadora manual, usando 40 kg/ha de sementes. Por ocasião da colheita foi avaliada a produtividade de grãos de milho, e os resultados foram submetidos à análise de regressão. Os resultados obtidos permitiram concluir que a produção máxima foi de 3.790 kg ha-1 de grãos, com aplicação de 354 kg ha-1 da fórmula comercial (10:28:20)

Doses de N, P e K na nutrição e no crescimento de mudas de dendezeiro.

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Competição de variedades de macaxeira (Manihot esculenta, L.) para agricultura familiar, no Município de Salvaterra, Marajó - Pa.

Edição dos Anais do XIII Congresso Brasileiro de Mandioca; VII Workshop sobre Tecnologia em Agroindústrias de Tuberosas Tropicais, Botucatu, 2009. Disponível também on-line

Competição de variedades de mandioca (Manihot esculenta, L.) para agricultura familiar, no Município de Salvaterra, Marajó - Pará.

Edição dos Anais do XIII Congresso Brasileiro de Mandioca; VII Workshop sobre Tecnologia em Agroindústrias de Tuberosas Tropicais, Botucatu, 2009