SOROEPIDEMIOLOGIA E FATORES ASSOCIADOS À TRANSMISSÃO DO Toxoplasma gondii EM SUÍNOS DO NORTE DO PARANÁ

Devido à importância do suíno como fonte de infecção da toxoplasmose humana e aos problemas reprodutivos gerados por esta enfermidade, objetivou-se traçar o perfil soroepidemiológico e os fatores associados à transmissão do Toxoplasma gondii no rebanho de suínos da região Norte do Paraná. Coletaram-se amostras de 521 animais (324 matrizes, 157 marrãs e 40 cachaços), de 22 propriedades suinícolas. Foi aplicado um questionário epidemiológico para verificar as características em relação aos manejos adotados. Realizou-se Imunofluorescência Indireta (IFI) para detecção de anticorpos anti-T. gondii (IgG) e considerou-se positivas as amostras que apresentaram título ³ 64. De 521 amostras de soro analisadas pela IFI, resultaram em 15,35% reagentes (80/521), sendo 54 (10,37%) matrizes, 20 (3,83%) marrãs e seis (1,15%) cachaços. A análise das variáveis evidenciou que o sistema de criação intensivo foi um fator de proteção para a presença de T. gondii. Entretanto, o acesso de outros animais ao cocho de ração e ao reservatório de água, a utilização do bebedouro tipo canaleta, presença de lâmina dágua nas baias e a existência de áreas alagadiças, foram fatores que contribuíram para a infecção pelo T. gondii. Serumepidemiology and associated factors on swine transmission of Toxoplasma gondii at Northern Paraná Brazil Abstract Due to the importance of swine as an infection source of toxoplasmosis to man and the reproductive problems that this disease causes, it was defined the prevalence and the factors associated with the transmission of Toxoplasma gondii in swine herds of northern Paraná State. A total of 521 serum samples (324 sows, 157 gilts e 40 boars) from 22 herds were analyzed and an epidemiological questionnaire was applied to obtain the management employed in these properties. The indirect immunofluorescence (IFAT) test was performed to detect anti-T. gondii antibodies (IgG) and titers ³ 64 were considered positive. From the 521 analyzed serum samples, 15.35% (80/521) were reactive for the IFAT test 54 (10.37%) sows, 20 (3.83%) gilts and 6 (1.15%) boars. The statistical analysis has shown that the intensive management system is a protective factor for T. gondii infection. However, the access of other animals to the water and food reservoir, the channels water-thought, the pens with water-blade and the presence of wet areas were factors which contributed to wards the infection by T. gondii

A feasibility cachaca type recognition using computer vision and pattern recognition

Brazilian rum (also known as cachaça) is the third most commonly consumed distilled alcoholic drink in the world, with approximately 2.5 billion liters produced each year. It is a traditional drink with refined features and a delicate aroma that is produced mainly in Brazil but consumed in many countries. It can be aged in various types of wood for 1-3 years, which adds aroma and a distinctive flavor with different characteristics that affect the price. A research challenge is to develop a cheap automatic recognition system that inspects the finished product for the wood type and the aging time of its production. Some classical methods use chemical analysis, but this approach requires relatively expensive laboratory equipment. By contrast, the system proposed in this paper captures image signals from samples and uses an intelligent classification technique to recognize the wood type and the aging time. The classification system uses an ensemble of classifiers obtained from different wavelet decompositions. Each classifier is obtained with different wavelet transform settings. We compared the proposed approach with classical methods based on chemical features. We analyzed 105 samples that had been aged for 3 years and we showed that the proposed solution could automatically recognize wood types and the aging time with an accuracy up to 100.00% and 85.71% respectively, and our method is also cheaper.info:eu-repo/semantics/publishedVersio

Evaluation of different fluoride concentrations supplemented with trimetaphosphate on enamel de- and remineralization in vitro

Trimetaphosphate (TMP) effects on demineralized bovine enamel were studied after 15 days of pH cycling. Treatments included 30 wt% (weight percent) dilutions of 0, 500, 1,500 or 3,000 µg F/g aqueous NaF solutions with or without 3% TMP. Treated specimens were assessed by transverse microradiography. With the exception of the 3,000 µg F/g case, 3% TMP addition provided significant additional overall remineralization compared with F alone. Mineral content profiles differed significantly between corresponding F and F + TMP groups. Fluoride alone resulted in more remineralization in the original demineralized zone, whereas F + TMP caused less demineralization in the underlying, originally sound enamel

Does Keyword Noise Change Over Space and Time? A Case Study of Social Media Messages

Social media is a valuable source of information for different domains, since users share their opinion and knowledge in (near) real-time. Moreover, users usually use different words to refer to a particular event (e.g., a rain event). These words may be later employed to filter social media messages regarding new occurrences of the event and, thus, to reduce the number of unrelated messages. These words, however, may have different meanings and, thus, may not reduce the number of messages. In this work, we conduct a case study to measure which rain- or flood-related keywords are less relevant to reduce the number of unrelated messages. The results show that the keywords change over space, due to local language/culture, and time, specially in different time scales