Federal University of Roraima

About: Federal University of Roraima is a based out in . It is known for research contribution in the topics: Population & Thermogravimetry. The organization has 981 authors who have published 1218 publications receiving 7849 citations. The organization is also known as: Federal University of Roraima.

Evaluation of emerging infectious disease and the importance of SINAN for epidemiological surveillance of Venezuelans immigrants in Brazil.

Abstract: Background: Following socio-economic turmoil in Venezuela, millions of the Venezuelan people are migrating to the neighboring Latin American countries including Brazil. Besides the social and economic burden of these migrants, Brazil must manage the health-related issues arising as consequence of these Venezuelan migrants.Poor health services in Venezuela along with unhygienic travelling conditions, lack of food (malnutrition) and potable water, unhealthy and overcrowded refugee camps or shelters, poor availability of medical services have made the migrant Venezuelan population susceptible to various diseases, especially infectious diseases.SINAN system is a health-related system in Brazil that keeps track of different health occurrences in the society and allows health care workers and policymakers free access to these data. Objectives: To evaluate the emergence of infectious diseases as a consequence of the arrival of Venezuelans immigrants in Brazil and to assess the importance of SINAN for epidemiological surveillance. Methods: Observational retrospective study. Data were collected from the SINAN system between 2015 and 2017 and was analyzed using descriptive statistics, and Mann-Whitney test (using SPSS tool version 12). Evaluated infectious diseases in this study were tuberculosis, sexually transmitted infections (STIs), HIV/AIDS, syphilis, viral hepatitis, leishmaniasis, and malaria. Results: STIs were the most commonly reported diseases. Compared to Brazilians, Venezuelan migrants reported significantly higher number of HIV/Aids (p < 0.046) and leishmaniasis cases (p < 0.049), while Brazilians reported significantly higher number of hepatitis cases (p < 0.046). Malaria was also more prevalent among Venezuelan migrants than native Brazilians. Conclusion: Increased incidence of infectious diseases among the migrant population should be considered seriously as lack of adequate control of these diseases might lead to outbreaks.

CHEMICAL COMPOSITIONS AND ANTIOXIDANT AND ANTIMICROBIAL ACTIVITIES OF PROPOLIS PRODUCED BY Frieseomelitta longipes AND Apis mellifera BEES

Abstract: Edineide Cristina A. de Souzaa, Etyene Janyne G. da Silvaa, Hayron Kalil C. Cordeirob, Nauara M. Lage Filhob, Felipe M. A. da Silvac, Diany Lucy S. dos Reisd, Carla Portod, Eduardo J. Pilaud, Luiz Antonio M. A. da Costaa, Afonso D. L. de Souzac, Cristiano Menezese and Adriana Flacha,*¤ Departamento de Química, Universidade Federal de Roraima, 69310-000, Boa Vista – RR, Brasil Universidade Federal Rural da Amazônia, 66075-110 Belém – PA, Brasil Departamento de Química, Universidade Federal da Amazônia, 69077-000, Manaus – AM, Brasil Departamento de Química, Universidade Estadual de Maringá, 87020-900, Maringá – PR, Brasil Embrapa Amazônia Oriental, 66095-903 Belém – PA, Brasil

Forage mass and morphological composition of Marandu palisade grass pasture under rest periods

Abstract: An evaluation of productive potential is not the only factor used to determine grazing management efficiency; it is also necessary to know the structural characteristics of the canopy. The objective of this study was to evaluate the effects of two management styles on Marandu palisade grass pastures under rotational stocking with respect to the herbage mass, morphological composition, and structural characteristics of the pasture. The treatments under consideration were a) a fixed rest period of 30 days (RP30) or b) a rest period based on the time necessary for the canopy to reach 95% light interception (LI95). The experimental design was a completely randomized block with two blocks and three replicates within the blocks. Animals were placed in the paddocks when the grass reached the established management criteria, which were maintained for three days to reach 25 cm in stubble height. Shorter grazing intervals (22.8 vs. 30 days), lower pre-grazing heights (35.9 vs. 42.3 cm), and lower forage masses (4,411 vs. 5,290 kg/ha.cycle) were observed in LI95 pastures. The LI95 treatment had a higher leaf percentage (48.3 vs. 41.1) and the lowest percentage of dead forage (19.0 vs. 25.4) in the pre-grazing forage mass of the pasture in relation to that of RP30. Performing pasture management based on RP30 throughout the season is harmful to the pasture structure because it reduces the leaf percentage and increases the stem and senescent material in the available forage. The lower pre-grazing forage mass observed under LI95 management is offset by more grazing cycles within the rainy season.