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Search Results: 1 - 10 of 403782 matches for " Antonio Pedro S.;Silva "
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You are What you Eat (and Drink): Identifying Cultural Boundaries by Analyzing Food & Drink Habits in Foursquare
Thiago H Silva,Pedro O S Vaz de Melo,Jussara Almeida,Mirco Musolesi,Antonio Loureiro
Computer Science , 2014,
Abstract: Food and drink are two of the most basic needs of human beings. However, as society evolved, food and drink became also a strong cultural aspect, being able to describe strong differences among people. Traditional methods used to analyze cross-cultural differences are mainly based on surveys and, for this reason, they are very difficult to represent a significant statistical sample at a global scale. In this paper, we propose a new methodology to identify cultural boundaries and similarities across populations at different scales based on the analysis of Foursquare check-ins. This approach might be useful not only for economic purposes, but also to support existing and novel marketing and social applications. Our methodology consists of the following steps. First, we map food and drink related check-ins extracted from Foursquare into users' cultural preferences. Second, we identify particular individual preferences, such as the taste for a certain type of food or drink, e.g., pizza or sake, as well as temporal habits, such as the time and day of the week when an individual goes to a restaurant or a bar. Third, we show how to analyze this information to assess the cultural distance between two countries, cities or even areas of a city. Fourth, we apply a simple clustering technique, using this cultural distance measure, to draw cultural boundaries across countries, cities and regions.
Marker-assisted selection for the rice blast resistance gene Pi-ar in a backcross population
Leila Garcês de Araújo,Anne Sitarama Prabhu,Pedro Antonio Arraes Pereira,Gisele Barata da Silva
Crop Breeding and Applied Biotechnology , 2010,
Abstract: A doubled-haploid (DH) population, obtained by anther culture of F1 plants from a cross between a highlysusceptible rice cultivar Lijiangxintuanheigu and the resistant somaclone (SC09), of the cultivar Araguaia, was used to identifyRAPD markers linked to the blast resistance gene Pi-ar. The 86 DH plants, inoculated with the race IB-9 of Magnaportheoryzae, segregated in 1:1 ratio of resistant and susceptible plants. Of the 67 primers used 31 produced DNA profiles thatdifferentiated resistant and susceptible bulks as well as the parental cultivars. The resistance gene was found linked to theprimer OPS162072 (‘AGGGGGTTCC’) at a distance of 3.6 cM. The selection efficiency of this primer was assessed in a BC3 F1population derived from another cross between a susceptible cultivar IAC 201 and SC09. The marker OPS16 showedefficiency of 86.9%, when six resistant and two susceptible plants were considered as negatives in RAPD analysis.
Avalia??o da atividade terapêutica do albendazol sobre infec??es experimental e humana pela Hymenolepis nana
Amato Neto, Vicente;Moreira, Antonio Augusto Baillot;Ferreira, Gra?a Maria Pinto;Nascimento, Sérgio Antonio Barbosa do;Matsubara, Luís;Campos, Rubens;Pinto, Pedro Luiz Silva;
Revista do Instituto de Medicina Tropical de S?o Paulo , 1990, DOI: 10.1590/S0036-46651990000300007
Abstract: with the objective of knowing adequately the spectrum of activity of albendazole against intestinal helminthiases, we made observations regarding hymenolepiasis caused by hymenolepis nana. two series of investigations were carried out: a) treatment of mice with single doses of either 25 or 50 mg/kg, repeated after ten days, using as controls animals treated with 25 mg/kg of praziquantel or not treated with any antiparasitic drugs; b) treatment of adults and children with 400 mg daily for three consecutive days, repeated after ten days. the observations in animals have shown a lack of efficacy of albendazole, since persistence of live worms in the intestine was verified systematically. on the other hand, only 10% of the treated patients could be considered cured. therefore, according to the procedures here described, this antiparasitic agent could not satisfactorily treat hymenolepiasis.
Infection by Cryptosporidium parvum in renal patients submitted to renal transplant or hemodialysis
Chieffi, Pedro Paulo;Sens, Yvoty A.S.;Paschoalotti, Maria Aparecida;Miorin, Luiz Antonio;Silva, Hélio Gomes C.;Jabur, Pedro;
Revista da Sociedade Brasileira de Medicina Tropical , 1998, DOI: 10.1590/S0037-86821998000400001
Abstract: the frequency of infection by cryptosporidium parvum was determined in two groups of renal patients submitted to immunosuppression. one group consisted of 23 renal transplanted individuals, and the other consisted of 32 patients with chronic renal insufficiency, periodically submitted to hemodialysis. a third group of 27 patients with systemic arterial hypertension, not immunosuppressed, was used as control. during a period of 18 months all the patients were submitted to faecal examination to detect c. parvum oocysts, for a total of 1 to 6 tests per patient. the results showed frequencies of c. parvum infection of 34.8%, 25% and 17.4%, respectively, for the renal transplanted group, the patients submitted to hemodialysis and the control group. statistical analysis showed no significant differences among the three groups even though the frequency of c. parvum infection was higher in the transplanted group. however, when the number of fecal samples containing c. parvum oocysts was taken in account, a significantly higher frequency was found in the renal transplanted group.
A gerência da Unidade Básica de Saúde no controle da tuberculose: um campo de desafios
Protti, Simone Teresinha;Silva, Laís Mara Caetano da;Palha, Pedro Fredemir;Villa, Tereza Cristina Scatena;Ruffino-Neto, Antonio;Nogueira, Jordana de Almeida;Sá, Lenilde Duarte de;
Revista da Escola de Enfermagem da USP , 2010, DOI: 10.1590/S0080-62342010000300016
Abstract: in this study we analyzed the management of basic health units in terms of tuberculosis (tb) control in a city in the interior of s?o paulo state. fourteen managers participated in the study. a closed questionnaire was administered and an open question was also applied. the interview was carried out after obtaining free and informed consent. data analysis was performed using the statsoft software statística 8.0 and thematic content analysis was used for the qualitative data. it was found there is a clear technical-bureaucratic management, deficient in the activity planning and organization dimensions at the bhu. hence, health care managers in this study should include management aspects of planning and organization as ways to make tb control feasible.
Stilbenes from Deguelia rufescens var. urucu (Ducke) A. M. G. Azevedo leaves: effects on seed germination and plant growth
Lobo, Lívia T.;Silva, Geilson A. da;Freitas, Manolo C. C. de;Souza Filho, Antonio Pedro S.;Silva, Milton N. da;Arruda, Alberto C.;Guilhon, Giselle M. S. P.;Santos, Lourivaldo S.;Santos, Alberdan S.;Arruda, Mara S. P.;
Journal of the Brazilian Chemical Society , 2010, DOI: 10.1590/S0103-50532010001000007
Abstract: the amazon biodiversity may provide plants whose chemical substances are capable of controlling weeds. in this study we report the isolation and identification of five stilbenes from the leaves of "timbó vermelho" (deguelia rufescens var. urucu): 4-methoxylonchocarpene (1); 3,5-dimethoxy-4′-hydroxy-3′-prenyl-trans-stilbene (2), lonchocarpene (3), 3,5-dimethoxy-4′-o-prenyl-trans-stilbene (4) and pterostilbene (5). compounds 2 and 4 are new natural products although 2 has been previously cited as synthesis product. potential allelopathic activity for 1, 2 and 4 was evaluated over seed germination and plant growth of mimosa pudica weed. the observed effects on seed germination did not vary significantly (p > 0.05) when the analysis of phytotoxicity was performed with the substances alone, the maximum inhibition did not exceed 20%. the most intense inhibitions on radicle and hypocotyl development were found for compound 4 (p < 0.05). when tested in pairs, showed antagonism for seed germination and synergism for radicle and hypocotyl development.
Comportamento de três cultivares de soja em diversos níveis de manganês em solu??o nutritiva
Mascarenhas, Hipólito Assun??o Antonio;Miranda, Manoel Albino Coelho de;Ramos, Luís Carlos da Silva;Furlani, Pedro Roberto;Bataglia, Ondino Cleante;
Bragantia , 1982, DOI: 10.1590/S0006-87051982000100026
Abstract: three soybean cultivars were grown in nutrient solution to investigate their response to mn using 0, 3, 6, and 10 ppm of mn, as mncl2.5h2o the results showed that 3 ppm was beneficial in increasing the dry matter yield of the above ground parts of the cultivars davis, santa rosa and biloxi. at 6 and 10 ppm of mn, davis and santa rosa were reduced considerably, and biloxi showed reduction of dry matter only at the 10 ppm level. the weight of dry matter of leaves, or the above ground parts, height of the plant and the weight of the roots could be used as parameters to evaluate tolerance to mn. on the other hand, root lenght was not a good indicator.
Tratamento da infec??o experimental de ratos por Strongyloides venezuelensis mediante uso da ivermectina e do levamisol injetáveis
Campos, Rubens;Pinto, Pedro Luiz Silva;Amato Neto, Vicente;Matsubara, Luís;Miyamoto, Akimi;Carvalho, Silvino Alves de;Takiguti, Clóvis Kiomitsu;Moreira, Antonio Augusto Baillot;
Revista do Instituto de Medicina Tropical de S?o Paulo , 1989, DOI: 10.1590/S0036-46651989000100010
Abstract: for the therapy of human strongyloidiasis, are necessary effective drugs to eliminate both larvae and adult worm parasitism, which may also be used by parenteral route, to obviate the particular conditions presented by many patients. a study based on the experimental infection by strongyloides venezuelensis in rats was done, administering injectable ivermectin or levamizole. both drugs were shown to be active, when used in single doses of 0.2 to 0.5 mg/kg of ivermectin, or 26 mg/kg for levamizole. ivermectin was slightly more effective as far as larval stage of the infection is concerned, and the same happened for levamisole for the adult worm stage. promising perspectives are visualized to improve the therapy of patients with serious disseminated infection by strongyloides stercoralis.
Estimativa da evapotranspira??o da mangueira com base no balan?o hídrico do solo
Silva, Vicente de P. R. da;Azevedo, Pedro V. de;Silva, Bernardo B. da;Bassoi, Luís H.;Teixeira, Antonio H. de C.;Soares, José M.;Silva, José A. M. e;
Revista Brasileira de Engenharia Agrícola e Ambiental , 2001, DOI: 10.1590/S1415-43662001000300015
Abstract: a field experiment was carried out at the irrigation district of bebedouro, located in the municipality of petrolina, brazil (latitude: 09o09's, longitude: 40o22'w, altitude: 365.5 m) during 1998 and 1999 to evaluate the root distribution and water consumption in a seven year old mango orchard, cv. tommy atkins, planted in a grid spacing of 5 m between plants and 8 m between rows, and irrigated by drippers. effective rooting depth was around 180 cm and mean water consumption was 4.6 and 4.1 mm d-1 in 1998 and in 1999, respectively. errors in soil water balance to estimate the actual evapotranspiration for seven day periods was 8%.
Multiple Choice Tests: Inferences Based on Estimators of Maximum Likelihood  [PDF]
Pedro Femia-Marzo, Antonio Martín-Andrés
Open Journal of Statistics (OJS) , 2014, DOI: 10.4236/ojs.2014.46045
Abstract: This paper revises and expands the model Delta for estimating the knowledge level in multiple choice tests (MCT). This model was originally proposed by Martín and Luna in 1989 (British Journal of Mathematical and Statistical Psychology, 42: 251) considering conditional inference. Consequently, the aim of this paper is to obtain the unconditioned estimators by means of the maximum likelihood method. Besides considering some properties arising from the unconditional inference, some additional issues regarding this model are also going to be addressed, e.g. test-inversion confidence intervals and how to treat omitted answers. A free program that allows the calculations described in the document is available on the website http://www.ugr.es/local/bioest/Delta
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