Anti-biofilm property of essential oils from Cymbopogon sp. against pathogenic bacteria in single-culture and co-culture

In this study, we evaluated whether the essential oils (EOs) from Cymbopogon flexuosus and Cymbopogon martinii can prevent production of biofilms either in single or combined culture of Staphylococcus aureus and Pseudomonas aeruginosa. Biofilm formation was assessed by microtiter-plate test with further quantification of viable cells and biofilm biomass. The evaluated EOs at 0.78 % significantly (P < 0.05) reduced only the viable cells of S. aureus that inhabited biofilm. However, in single-and co-culture assays, both oils significantly (P > 0.05) decreased the amount of biofilm biomass. Biofilm reductions between 52-83% and 60-93% were achieved for the treatments with EOs from C. flexuosus and C. martinii, respectively. Although the biomass reductions of simgle and co-cultivated biofilms were significant, the same was not true for viable cells, except for S. aureus. Considering that the remaining colony forming units can reconstitute the EPS matrix, studies with higher concentrations than those used in this research are suggested in order to obtain greater logarithmic reductions of viable bacterial cells

REFLEXÕES SOBRE A POLÍTICA DE ASSISTÊNCIA ESTUDANTIL ATRAVÉS DE COORDENADORES DE CURSO DE BACHARELADO

O presente artigo é o recorte de uma pesquisa em andamento, cuja temática principal dialoga sobre o papel dos coordenadores dos cursos de graduação, bacharelado da área da saúde das universidades comunitárias do Rio Grande do Sul, no que tange a implementação das políticas de apoio ao estudante. A metodologia da pesquisa envolverá dois momentos. O primeiro refere-se a um levantamento social que tem o objetivo de nos aproximar mais do universo pesquisado, a partir do envio de questionários aos coordenadores dos cursos. Após esse momento, realizaremos as entrevistas semiestruturas com os gestores, coordenadores dos dois cursos com maior número de alunos de cada universidade e dois alunos de cada um desses cursos. Sendo assim, o principal objetivo deste artigo é mostrar a análise preliminar de alguns achados oriundos do envio do questionário para os coordenadores dos cursos. Tais análises nos permitiram tecer algumas considerações sobre o perfil desses coordenadores. Estes resultados, por sua vez, nos revelaram algumas questões contraditórias que pretendemos responder ao longo da pesquisa

Intervenções de educação alimentar e nutricional para mulheres adultas que frequentam um espaço de dança em Esteio/RS: relato de experiência.

Introduction: Food and Nutrition Education (EAN) actions can assist individuals in the construction of new knowledge, guiding them to a favorable practice of preventive behaviors. Objective: To develop food education actions for adult women who participate in dance classes in a space in the city of Esteio / RS, presenting workshops as a nutritional intervention strategy and proposing new eating experiences. Materials and methods: This is an experience report. The study population consisted of 12 women aged between 30 and 60 years. There were four meetings, one for diagnosis, and in the others, EAN interventions were developed; the first was based on the ten steps to an adequate and healthy diet in the Food Guide for the Brazilian Population, the second was presented and explained the Non-Conventional Food Plants (PANC) and finally, practical, everyday culinary preparations were developed. Results: The participants expressed interest and were impressed with the PANC. Curiosity and knowledge about issues related to nutrition, a tendency to change eating behavior and positive evaluations of interventions were identified. Conclusions: EAN is a widely used method with mostly positive outcomes when related to health promotion. In the present study, it can be stated that the results found responded positively to the objective of the study.Introdução: Ações de Educação Alimentar e Nutricional (EAN) podem auxiliar indivíduos na construção de novos conhecimentos, orientando-os a uma prática favorável de comportamentos preventivos. Objetivo: Elaborar ações de educação alimentar para mulheres adultas que participam de aulas de dança em um espaço na cidade de Esteio/RS, apresentando oficinas como estratégia de intervenção nutricional e propondo novas experiências alimentares. Materiais e métodos: Trata-se de um relato de experiência. A população do estudo constituiu-se por 12 mulheres com idade entre 30 e 60 anos. Ocorreram quatro encontros, um de diagnóstico, e nos outros desenvolveram-se as intervenções de EAN; a primeira baseou-se nos dez passos para uma alimentação adequada e saudável do Guia Alimentar para a População Brasileira, a segunda foi apresentado e explicado as Plantas Alimentícias não Convencionais (PANC) e por último desenvolveu-se preparações culinárias práticas do cotidiano. Resultados: As participantes manifestaram interesse e impressionaram-se com as PANC. Identificou-se curiosidade e conhecimento sobre assuntos relativos à nutrição, tendência de mudança do comportamento alimentar e avaliações positivas das intervenções. Conclusões: A EAN é um método muito utilizado e com desfechos majoritariamente positivos quando relacionados à promoção de saúde. No presente estudo pode-se afirmar que os resultados encontrados responderam positivamente ao objetivo do estudo

Percepções das Barreiras de Difusão da Pesquisa Gerencial por Pesquisadores e Profissionais

Studies based on Diffusion of Innovation Theory point out the existence of common barriers that prevent more effective engagement from academic research with the accounting practice. The objective is to verify in which barrier of diffusion the research in managerial accountancy in Brazil finds itself according to the perception of researchers and professionals. Studies point out that investigations have devoted themselves to subjects that are more and more distant from organizational necessities. It is a survey with quantitative approach for the issue. Collected data was through electronic questionnaire to professors and members of Regional Accountancy Councils considering accessibility. Data analysis used SPSS software, descriptive statistics and confirmatory factor analysis. The research instrument was validated in a previous study, but the factorial analysis indicated collinearity among questions. It was perceived that the research is too much isolated from practice. It is unanimous, for both groups, the perception that there is a necessity to convey the issues concerning practice in academic research. No phase is totally responsible for imposing barriers between theory and practice. However, there is prevalence that the translation phase has the highest potential to increase the gap between academic research and practice.Objetivo: Verificar em qual barreira de difusão a pesquisa em contabilidade gerencial no Brasil se encontra, na percepção de pesquisadores e profissionais de contabilidade. Estudos aferem que as investigações têm se dedicado a temas destoantes das necessidades organizacionais. Método: Trata-se de uma survey com abordagem quantitativa. Coletaram-se dados por meio de questionário eletrônico enviado a professores e membros dos Conselhos Regionais de Contabilidade (CRC) considerando a acessibilidade. Para análise dos dados, utilizou-se o software SPSS, estatística descritiva e análise fatorial confirmatória. Resultados: Verificou-se que a pesquisa está demasiadamente isolada da prática. E é unânime, para ambos grupos, a percepção da necessidade de que as pesquisas se apropriem das problematizações advindas da prática. Nenhuma fase é totalmente responsável pela imposição de barreiras entre a teoria e a prática. Entretanto, a fase da tradução possui o maior potencial para aumentar o gap entre pesquisa acadêmica e prática. Contribuições: Contribui para o debate a respeito da relevância da pesquisa acadêmica e a prática em contabilidade gerencial, fornecendo evidências em relação à natureza, extensão e difusão da percepção dos pesquisadores e profissionais de contabilidade, representados por membros do CRC

Bismuth molybdate catalysts prepared by mild hydrothermal synthesis: Influence of pH on the selective oxidation of propylene

A series of bismuth molybdate catalysts with relatively high surface area was prepared via mild hydrothermal synthesis. Variation of the pH value and Bi/Mo ratio during the synthesis allowed tuning of the crystalline Bi-Mo oxide phases, as determined by X-ray diffraction (XRD) and Raman spectroscopy. The pH value during synthesis had a strong influence on the catalytic performance. Synthesis using a Bi/Mo ratio of 1/1 at pH ≥ 6 resulted in γ-Bi2MoO6, which exhibited a better catalytic performance than phase mixtures obtained at lower pH values. However, a significantly lower catalytic activity was observed at pH = 9 due to the low specific surface area. γ-Bi2MoO6 synthesized with Bi/Mo = 1/1 at pH = 6 and 7 exhibited relatively high surface areas and the best catalytic performance. All samples prepared with Bi/Mo = 1/1, except samples synthesized at pH = 1 and 9, showed better catalytic performance than samples synthesized with Bi/Mo = 2/3 at pH = 4 and 9 and γ-Bi2MoO6 synthesized by co-precipitation at pH = 7. At temperatures above 440 °C, the catalytic activity of the hydrothermally synthesized bismuth molybdates started to decrease due to sintering and loss of surface area. These results support that a combination of the required bismuth molybdate phase and a high specific surface area is crucial for a good performance in the selective oxidation of propylene

Dierences in spontaneous speech fluency between Parkinson’s disease and spinocerebellar ataxia type 3

Background: The basal ganglia and cerebellum both have a role in speech production although the eect of isolated involvement of these structures on speech fluency remains unclear. Objective: The study aimed to assess the dierences in the articulatory pattern in patients with cerebellar vs. basal ganglia disorders. Methods: A total of 20 individuals with Parkinson’s disease (PD), 20 with spinocerebellar ataxia type 3 (SCA3), and 40 controls (control group, CG) were included. Diadochokinesis (DDK) and monolog tasks were collected. Results: The only variable that distinguished SCA3 carriers from the CG was the number of syllables in the monolog, with SCA3 patients of a significantly lower number. For patients with PD, the number of syllables, phonation time, DDK, and monolog were significantly lower than for CG. Patients with PD were significantly worse compared to patients with SCA3 in the number of syllables and phonation time in DDK, and phonation time in monolog. Additionally, there was a significant correlation between the number of syllables in the monolog and the MDS-UPDRS III for participants with PD, and the Friedreich Ataxia Rating Scale for participants with SCA3 suggesting a relationship between speech and general motor functioning. Conclusion: The monolog task is better at discriminating individuals with cerebellar vs. Parkinson’s diseases as well as dierentiating healthy control and was related to the severity of the disease

Isolation of Angola-like Marburg virus from Egyptian rousette bats from West Africa.

Marburg virus (MARV) causes sporadic outbreaks of severe Marburg virus disease (MVD). Most MVD outbreaks originated in East Africa and field studies in East Africa, South Africa, Zambia, and Gabon identified the Egyptian rousette bat (ERB; Rousettus aegyptiacus) as a natural reservoir. However, the largest recorded MVD outbreak with the highest case-fatality ratio happened in 2005 in Angola, where direct spillover from bats was not  shown. Here, collaborative studies by the Centers for Disease Control and Prevention, Njala University, University of California, Davis USAID-PREDICT, and the University of Makeni identify MARV circulating in ERBs in Sierra Leone. PCR, antibody and virus isolation data from 1755 bats of 42 species shows active MARV infection in approximately 2.5% of ERBs. Phylogenetic analysis identifies MARVs that are similar to the Angola strain. These results provide evidence of MARV circulation in West Africa and demonstrate the value of pathogen surveillance to identify previously undetected threats