Suchergebnisse

Resumo
A busca por práticas mais sustentáveis é uma das missões para a agricultura e pecuária brasileira, tendo em vista os diversos agroecossistemas em degradação em nosso território. Nesse sentido é necessário implementar novas formas de manejos e práticas produtivas sustentáveis, buscando menores degradações ao ambiente e a implementação de um sistema mais rentável e em conformidade com a natureza. No contexto da pecuária, o pastoreio rotativo é uma prática racional de manejo agropecuário que estabelece uma ruptura com o manejo tradicional e integra em seu método a relação do solo, da planta e do animal. Neste trabalho é apresentado uma sistematização de experiência de uma propriedade rural localizada no estado do Rio Grande do Sul, na cidade de São Vicente do Sul, no distrito de Palma, que implementou o pastoreio rotativo. Com esse propósito, essa pesquisa tem como objetivo retratar a consolidação do pastoreio rotativo como um manejo sustentável na pecuária e sua contribuição na recuperação do bioma Pampa sul-brasileiro. Ao final desse estudo, pode-se constatar que o pastoreio rotativo se demonstrou como uma prática que contribuiu para a diminuição da degradação do bioma, melhorou as condições físicas e químicas do solo e integrou maior bem estar animal.

Este artigo tem o objetivo fazer uma análise sobre a história do carnaval e de escolas de samba de Belém, a partir da Escola de Samba Bole-Bole, ressaltando a sua importância para a economia e o fortalecimento identitário de sua comunidade com o bairro a que pertence. Foi realizada uma revisão bibliográfica sobre o carnaval, tendo como referência a tese de doutorado de Gordo (2015). A relevância deste estudo se caracteriza em desvelar pontos significativos que acontecem nas escolas de samba, na maioria das vezes desconhecidos ou ignorados pela sociedade.

The contribution of plant residues to the soil is an essential requirement for the success of no-tillage systems, especially in areas with a tropical climate where the organic material decomposition rate is high. The type of straw present on the soil surface can influence the culture implanted subsequently, mainly with regard to the availability of nitrogen (N). The objective of this study was to investigate the effect of cultural remains of maize (exclusive or intercropped with cover crops) on the development and productivity of the common bean grown in succession and fertilized with different N doses. The experimental design was a randomized block arranged in a factorial scheme (5 × 4), with four replications. The treatments consisted of combinations of cultural remains of exclusive maize, maize + Crotalaria spectabilis, maize + Cajanus cajan, maize + Canavalia ensiformis, and maize + Urochloa ruziziensis cultivated previously and of four N rates (0, 40, 80, and 120 kg ha-1) applied to bean crops. The plots consisted of seven lines of 7.5 m length with 0.45 m spacing between the lines. The evaluated parameters were: dry matter of the plant cover, dry matter of the aerial part (beans), production components, weight of 100 grains, and grain yield. The intercropping of maize and cover crops promoted an increase in dry matter over the soil, compared to the exclusive maize crop. There was an increase in the dry matter of bean plants with the increase in N rates in the two years of cultivation; regarding productivity, there was an increment only in the first year of cultivation. The maize consortium with cover plants provided adequate soil cover, but did not influence the productivity of beans cultivated in succession in the two years of cultivation.

The importance of environmental monitoring is clear from the many oil spills that have occurred over the past three decades. This has encouraged both companies and the public sector involved in the prevention and response to these accidents to develop efficient procedures to minimize the damage caused by accidents involving oil spill. This study reviews the history of oil spill accidents in Brazil and examines how these events have contributed to the development of technological research through partnerships involving oil companies, government, universities and research institutes, with the emphasis on the Amazon coastal zone. As a result, environmental sensitivity indexes (ESIs) for oil spill have been developed specifically for the Amazon coast, where fluvial and marine processes take place in the estuary of the world's largest river system. Perspectives on research and emergency response procedures are presented, with the primary objective of conserving the social-environmental diversity of the planet's most important tropical region. ; A importância do monitoramento ambiental é medida pelos vários casos de derramamentos de óleo ocorridos no mundo durante as últimas três décadas. Isto tem incentivado as empresas e órgãos do governo envolvidos na prevenção e combate a estes acidentes a aperfeiçoarem cada vez mais os métodos, tanto preventivos como corretivos, para a minimização dos danos gerados por acidentes com derramamento de óleo. Este trabalho objetiva contextualizar de forma histórica como os acidentes com derramamento de óleo propiciaram o desenvolvimento de pesquisa tecnológica a partir de parcerias entre empresas de petróleo, agências de governo, universidades e institutos de pesquisa no Brasil, em especial na zona costeira Amazônica. Como resultado, índices de sensibilidade ambiental ao derramamento de óleo (ISA) foram definidos especialmente para a Amazônia costeira, onde processos fluviais e marinhos se encontram na foz do maior rio do mundo, o rio Amazonas. Perspectivas de pesquisa e respostas de emergência a acidentes são apresentadas, a fim de se conservar a diversidade socioambiental da mais importante região tropical do planeta.

Sudden cardiac death (SCD) risk stratification in dilated cardiomyopathy (DCM) has been based on left ventricular ejection fraction (LVEF), even though SCD may occur with LVEF > 35%. Family history of unexplained SCD, especially in the young, raises concern about potential inheritable risk factors. It remains largely unknown how genetic tests can be integrated into clinical practice, particularly in the selection of implantable cardioverter defibrillator (ICD) candidates. We aimed to assess the diagnostic yield of genetic testing in DCM patients with a class I recommendation for ICD implantation, based on current guidelines. Methods. We included ambulatory stable adult patients with idiopathic or familial DCM with previously implanted ICD. Molecular analysis included 15 genes (LMNA, MYH7, MYBPC3, TNNT2, ACTC1, TPM1, CSRP3, TCAP, SGCD, PLN, MYL2, MYL3, TNNI3, TAZ, and LDB3) using next-generation sequencing. Results. We evaluated 21 patients, 12 (57%) males and 9 (43%) with familial DCM, including 3 (14%) with a family history of premature unexplained SCD. Mean age at DCM diagnosis was 40 ± 2 years, and mean age at ICD implantation was 50 ± 12 years. LVEF was 27 ± 9%, and LV end-diastolic diameter was 65 ± 7 mm. Genetic variants were found in six (29%) patients, occurring in 5 genes: TPM1, TNNT2, MYH7, PLN, and MYBPC3. The majority were classified as variants of uncertain significance. Family history of SCD was present in both patients with PLN variants. Conclusion. In patients with DCM and ICD, genetic variants could be identified in a significant proportion of patients in several genes, highlighting the potential role of genetics in DCM SCD risk stratification. ; FATIMA (Portuguese study of familial dilated cardiomyopathy) investigators include Dr.a Ana Cristina Oliveira, Dr.a Ana Lebreiro, Dr.a Ana Rita Almeida, Dr. António Madureira, Dr.a Aurora Andrade, Prof.a Cristina Gavina, Prof.a Dulce Brito, Dr. Emanuel Correia, Prof. Lino Gon-çalves, Prof. Luís Lopes, Dr.a Maria Teresa Faria, Dr.a Olga Azevedo, Prof. Rui Baptista, and Dr.a Teresa Pinho. (is work was supported by the Foundation for Science and Technology of Portuguese Government (PTDC/BIM-MEC/ 0650/2012).

Aim To design, implement and evaluate a nurse-led capacity building intervention (PromoGOB) for intersectoral action for health at local governments. Design The programme was based on theories of the policy process and organizational change and facilitated by a nurse developing a health broker role. A complex intervention perspective was adopted in carrying out the study. The intervention was evaluated using a mixed method embedded design. Methods Quantitative component relied on a specific questionnaire. This tool, designed and piloted ad hoc, measured the capacity in terms of knowledge, awareness, resources, skills, and commitment, both at sectoral and government levels. For the qualitative component, semi-structured interviews were conducted. These explored the perceived capacity and feasibility and acceptability issues. The programme was initiated at the end of October 2019, and it lasted a total of 5 weeks. Nineteen individuals representing various sectors at a local government in northern Spain participated in the study. The data analysis was concluded by the end of March 2020. Findings PromoGOB positively influenced participants' capacity for addressing health promotion. Awareness component, intersectoral work and the nurse as health broker were essential in the programme. The necessity of political participation was identified as an issue to be prioritized in future studies.