CO2-C losses and carbon quality of selected Maritime Antarctic soils

Polar Regions are the most important soil carbon reservoirs on Earth. Monitoring soil carbon storage in a changing global climate context may indicate possible effects of climate change on terrestrial environments. In this regard, we need to understand the dynamics of soil organic matter in relation to its chemical characteristics. We evaluated the influence of chemical characteristics of humic substances on the process of soil organic matter mineralization in selected Maritime Antarctic soils. A laboratory assay was carried out with soils from five locations from King George Island. We determined the contents of total organic carbon, oxidizable carbon fractions of soil organic matter, and humic substances. Two in situ field experiments were carried out during two summers, in order to evaluate the CO2-C emissions in relation to soil temperature variations. The overall low amounts of soil organic matter in Maritime Antarctic soils have a low humification degree and reduced microbial activity. CO2-C emissions showed significant exponential relationship with temperature, suggesting a sharp increase in CO2-C emissions with a warming scenario, and Q10 values (the percentage increase in emission for a 10°C increase in soil temperature) were higher than values reported from elsewhere. The sensitivity of the CO2-C emission in relation to temperature was significantly correlated with the humification degree of soil organic matter and microbial activity for Antarctic soils. © 2012 Antarctic Science Ltd.

Influenza among the elderly in the Americas: A consensus statement

Influenza exacts a heavy burden on the elderly, a segment of the population that is estimated to experience rapid growth in the near future. In the past decade most developed and several developing countries have recommended influenza vaccination for those > 65 years of age. The World Health Organization (WHO) set a goal of 75% influenza vaccination coverage among the elderly by 2010, but it was not achieved. In 2011, the Technical Advisory Group at the Pan American Health Organization, Regional Office of WHO for the Americas, reiterated the influenza vaccine recommendation for older adults. Relatively little information has been compiled on the immunological aspect of aging or on reducing its impact, information particularly relevant for clinicians and gerontologist with firsthand experience confronting its effects. To fill this data gap, in 2012 the Americas Health Foundation (Washington, D.C., United States) and the nonprofit, Fighting Infectious Diseases in Emerging Countries (Miami, Florida, United States), convened a panel of Latin American clinicians and gerontologists with expertise in influenza to discuss key issues and develop a consensus statement. The major recommendations were to improve influenza surveillance throughout Latin America so that its impact can be quantified; and to conduct laboratory confirmation of influenza for all patients who have flu-like symptoms and are frail, immunosuppressed, have comorbidities, are respiratory compromised, or have been admitted to a hospital. The panel also noted that: since evidence for antivirals in the elderly is unclear, their use should be handled on a case-by-case basis; despite decreased immunological response, influenza vaccination in older adults is still crucial; indirect immunization strategies should be encouraged; and traditional infection control measures are essential in long-term care facilities.

Investigação de novas ferramentas estatísticas e utilização de microcontrolador no monitoramento da queima na retificação plana tangencial

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Avanços no desenvolvimento de um processo de acabamento para peças planas submetidas à cinemática de lapidação sobre um rebolo dressado com grau de recobrimento

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Uma contribuição da aplicação de modelos fuzzy empregados na detecção da queima de peças na retificação plana

Pós-graduação em Engenharia Mecânica - FEB

Estímulo da síntese da glutationa na maturação in vitro de oócitos bovinos e sua influência no desenvolvimento embrionário

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

Biologia reprodutiva da raia-viola Rhinobatos percellens Walbaum, 1792 (Chondrichthyes, Rhinobatidae), da plataforma continental de São Paulo

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Estudo eletroquímico da corrosividade de biodiesel para aço carbono e outros materiais metálicos usados em veículos automotores

Pós-graduação em Química - IQ

Aplicação da rede neural MLP (Multilayer Perceptron) em indústria de pisos e revestimentos do Pólo Cerâmico de Santa Gertrudes - SP

Pós-graduação em Geociências e Meio Ambiente - IGCE

Estudo teórico das propriedades estruturais e eletrônicas do GaN e do semicondutor magnético Ga1-xMnxN no bulk e na superfície

Pós-graduação em Ciência e Tecnologia de Materiais - FC

Avaliação da longevidade de vacas da raça Nelore por diferentes critérios utilizando análise de sobrevivência

Pós-graduação em Genética e Melhoramento Animal - FCAV

Search for Top Squarks in R-Parity-Violating Supersymmetry Using Three or More Leptons and b-Tagged Jets

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Acolhimento na estratégia saúde da família:revisão integrativa

Objective. To review the literature regarding the application of the notion of user embracement and to identify the contributions of this concept for primary health care practices in Brazil.Method. We carried out an integrative review of the literature regarding primary health care. The following databases were searched: LILACS, SciELO, and MEDLINE, covering the period from 2006 to 2010. The following search terms were used in LILACS and SciELO: acolhimento and programa saude da familia and saude. For MEDLINE, the terms user embracement and family health program and health were used. The review was performed in November 2010.Results. We identified 21 articles meeting the inclusion criteria, all of which described studies carried out in Brazil. The articles were divided into three empirical categories: integration and embracement; primary care work process; and evaluation of services. These are complementary categories that converge to two main views of embracement: the first sees embracement as a means of reorganizing the primary health care environment, and the second sees embracement as an attitude towards users. The review also shows that embracement may be a management tool that supports the Unified Health System and is associated with the principles of comprehensiveness and universality.Conclusions. Embracement is able to create a bond between health care workers and users. It promotes self-care, a better understanding of disease, as well as user co-responsibility for treatment. In addition, it facilitates universal access, strengthens multiprofessional and intersectoral work, qualifies care, humanizes practices, and encourages actions to combat prejudice. Nevertheless, the perspective of health care users regarding embracement deserves more attention and should be the focus of future studies.

Investigation of the conduction processes in PZT-based multiferroics: Analysis from Jonscher's formalism

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Análise térmica do processo de retificação plana sob diferentes condições de lubrificação utilizando técnicas de transferência de calor reversa

Pós-graduação em Ciência e Tecnologia de Materiais - FC