Rumen microbial diversity under influence of a polyclonal antibody preparation against lactate-producing and proteolytic bacteria in cows fed different energy sources

Nine ruminally cannulated cows fed different energy sources were used to evaluate an avianderived polyclonal antibody preparation against specific ruminal bacteria and monensin on microbial community diversity. The experimental design was three Latin squares 3 x 3 distinguished by the main energy source in the diet [dry-ground corn grain, high moisture corn silage or citrus pulp]. Inside each Latin square, animals received one of the feed additives per period [control, monensin or polyclonal antibody preparation]. Each period lasted 21 days where 20 were used for treatments adaptation and the last one for sampling collection. Microbial diversity was evaluated by protozoa counts and denaturing gradient gel electrophoresis. Polyclonal antibodies plus citrus pulp (CiPu) addition in the diet resulted in an increase of relative counting of Isotricha protozoa that indicates a possible effect on this ruminal ciliate population. In general lines, in the present experiment, it was not possible to assign that there was a pattern in the structures of amplification of Bacteria and Archaea communities of the ruminal content. Oral passive immunization is a technology that arises as an effective alternative for feed additive production. Further research is still necessary to better understand its mechanisms of action.

QK-Means: A clustering technique based on community detection and K-Means for deployment of cluster head nodes

Wireless Sensor Networks (WSN) are a special kind of ad-hoc networks that is usually deployed in a monitoring field in order to detect some physical phenomenon. Due to the low dependability of individual nodes, small radio coverage and large areas to be monitored, the organization of nodes in small clusters is generally used. Moreover, a large number of WSN nodes is usually deployed in the monitoring area to increase WSN dependability. Therefore, the best cluster head positioning is a desirable characteristic in a WSN. In this paper, we propose a hybrid clustering algorithm based on community detection in complex networks and traditional K-means clustering technique: the QK-Means algorithm. Simulation results show that QK-Means detect communities and sub-communities thus lost message rate is decreased and WSN coverage is increased. © 2012 IEEE.

Candida species: Current epidemiology, pathogenicity, biofilm formation, natural antifungal products and new therapeutic options

The incidence of fungal infections has increased significantly, so contributing to morbidity and mortality. This is caused by an increase in antimicrobial resistance and the restricted number of antifungal drugs, which retain many side effects. Candida species are major human fungal pathogens that cause both mucosal and deep tissue infections. Recent evidence suggests that the majority of infections produced by this pathogen are associated with biofilm growth. Biofilms are biological communities with a high degree of organization, in which micro-organisms form structured, coordinated and functional communities. These biological communities are embedded in a self-created extracellular matrix. Biofilm production is also associated with a high level of antimicrobial resistance of the associated organisms. The ability of Candida species to form drugresistant biofilms is an important factor in their contribution to human disease. The study of plants as an alternative to other forms of drug discovery has attracted great attention because, according to the World Health Organization, these would be the best sources for obtaining a wide variety of drugs and could benefit a large population. Furthermore, silver nanoparticles, antibodies and photodynamic inactivation have also been used with good results. This article presents a brief review of the literature regarding the epidemiology of Candida species, as well as their pathogenicity and ability to form biofilms, the antifungal activity of natural products and other therapeutic options. © 2013 SGM.

Inequality in Central America in the 1990s

Includes bibliography

Exterior orientation of CBERS-2B imagery using multi-feature control and orbital data

The major contribution of this paper relates to the practical advantages of combining Ground Control Points (GCPs), Ground Control Lines (GCLs) and orbital data to estimate the exterior orientation parameters of images collected by CBERS-2B (China-Brazil Earth Resources Satellite) HRC (High-resolution Camera) and CCD (High-resolution CCD Camera) sensors. Although the CBERS-2B is no longer operational, its images are still being used in Brazil, and the next generations of the CBERS satellite will have sensors with similar technical features, which motivates the study presented in this paper. The mathematical models that relate the object and image spaces are based on collinearity (for points) and coplanarity (for lines) conditions. These models were created in an in-house developed software package called TMS (Triangulation with Multiple Sensors) with multi-feature control (GCPs and GCLs). Experiments on a block of four CBERS-2B HRC images and on one CBERS-2B CCD image were performed using both models. It was observed that the combination of GCPs and GCLs provided better bundle block adjustment results than conventional bundle adjustment using only GCPs. The results also demonstrate the advantages of using primarily orbital data when the number of control entities is reduced. © 2013 International Society for Photogrammetry and Remote Sensing, Inc. (ISPRS).

Agricultura tradicional e a manutenção da agrobidiversidade em comunidades rurais do município de Santo Antonio de Leverger - MT

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Caracterização do uso do solo e das áreas de preservação permanente, visando a adequação ambiental

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Chico Bento, um caipira do campo ou da cidade?: a representação do espaço rural e urbano e de seus habitantes na revista em quadrinhos do Chico Bento (1982-2000)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Turismo e(m) assentamentos de reforma agrária na perspectiva da crítica marxista radical: uma leitura dos anais do Congresso Brasileiro de Turismo rural

Pós-graduação em Geografia - IGCE

Análise do campo térmico de cidades de médio porte: estudo de caso no pólo textil de Americana - SP

Pós-graduação em Geografia - IGCE

Políticas educacionais no município de Rosana: a municipalização da educação nas escolas de ensino fundamental do assentamento Gleba XV de Novembro - um projeto de política social ?

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Um estudo da diversidade e atualidade da reforma agrária: análise dos tipos de assentamentos do Território Cantuquiriguaçu - estado do Paraná

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Rural e urbano nos municípios de Presidente Prudente, Álvares Machado e Mirante do Paranapanema: dos mitos pretéritos às recentes transformações

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Information and communication technologies for disaster risk management in the Caribbean

Includes bibliography.

Famílias de zona rural e urbana: características e concepções de adolescentes

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)