Efeitos potenciais da política tributária sobre o consumo de alimentos e insumos agropecuários: uma análise de equilíbrio geral inter-regional

This paper analyses the potentials long run effects on the Brazilian economy of two policies in the field of the indirect taxes: a) the reduction of indirect taxes on food consumption by the households and; b) the reduction of indirect taxes on the main inputs used in the agricultural activity. The analysis is accomplished through two simulation exercises using a static inter-regional applied general equilibrium model. The benchmark year is 2001. The results of both simulations are found to be similar, except in terms of magnitude: the most intense effects are associated to the reduction the taxation on foods. Both simulations show expansion in the level of economic activity in the poorest regions of the country and reduction in the richest. They also show a potential for improving the welfare of the low income classes in all regions, especially in the poorest: North and Northeast. The negative impact on the governments’ revenue is the main restriction to the implementation of these policies. Results also show that the effects of tax policies differ among regions, sometimes substantially, what strengthen the usefulness the interregional applied general equilibrium models for the analysis of tax policies impacts in Brazil.tax policy, indirect taxes, foods, agricultural activity, general equilibrium., Agribusiness, R13, H20,

Deflection hardening of sustainable fiber–cement composites

In the present study sisal fiber–cement composites reinforced with 4% and 6% of short fibers were developed and their physical–mechanical behavior was characterized. To ensure the composite sustainability and durability, the ordinary Portland cement matrix was modified by adding fly ash and metakaolin, and the natural aggregate was substituted by 10% and 20% of recycled concrete aggregate. Flat sheets were cast in a self-compacted cement matrix and bending tests were performed to determine the first crack, postpeak strength and toughness of the composites. Cyclic flexural tests were carried out to determine the stiffness variation of composite due to cracking formation and propagation. It can be seen that the reinforcement provided by short sisal fibers for recycled cement matrices guaranteed a composite with multiple cracking and an increase of strength after the first crack. Reduction of stiffness and increase the damping capacity of composite are verified with progressive cracking.CAPES (PVE Program: Project 047/2012) and CNPqBrazilian agency FAPESBBrazilian agency CAPES through the PVE Progra

Iniciação a docência no ensino médio com experimentos

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Interações de cultivares e linhagens de feijoeiro com ambientes

The performance of bean lines brought forth in breeding programs or of cultivars in use can be affected by environmental variability. The adaptability and stability of grain yield of 18 common bean cultivars and lines in 23 environments (combinations of seasons, years and locations) were evaluated in the State of São Paulo, Brazil. 'IAC-Carioca' and 'IAC-Carioca Eté' were used as standard cultivars for the carioca grain type, while 'FT-Nobre' and 'IAC-Una' represented the standard for black grains. The experiment was set up in a randomized complete block design with four replications and plots consisting of two, two central five meters rows flanked by border rows. Stability parameters were estimated by the methods Maximum Yield Deviations (MYD) and by the Additive Main Effects and Multiplicative Interaction Analysis (AMMI). For the identification of the most stable cultivars, the two methods led to consistent results, although by MYD the highest stability was always associated to the highest yield. 'MAC-733327' and 'LP 9637' were the most suitable cultivars and lines for the joint seasons, while 'LP 9637' and 'FT-Nobre' were the most suitable for the dry season. The MYD method combined a simple procedure, easiness of result interpretation, uniqueness of parameters, and association between stability and yield. On the other hand, the AMMI method simplified the identification of stable cultivars by visual inspection, also providing information on the environments. However, the complex nature which combines uni-and multivariate techniques hampers its widespread use in breeding programs.A variabilidade de ambientes pode afetar o desempenho de linhagens de feijoeiro geradas nos programas de melhoramento e também dos cultivares em uso. Assim, foram avaliadas a adaptabilidade e a estabilidade de produção de grãos de 18 cultivares e linhagens de feijoeiro em 23 ambientes (combinações de épocas, anos e locais), no Estado de São Paulo. 'IAC-Carioca' e 'IAC-Carioca Eté' foram os cultivares usados como padrões de grãos tipo carioca, enquanto 'FT-Nobre' e 'IAC-Una' foram padrões para grãos pretos. Os ensaios foram instalados em blocos completos casualizados, com quatro repetições e parcela útil de duas linhas centrais de cinco metros. Os parâmetros de estabilidade foram estimados pelos métodos dos Desvios da Produtividade Máxima (MYD) e da Análise da Interação Multiplicativa e dos Efeitos Principais Aditivos (AMMI). Ambos produziram resultados congruentes em termos de identificação dos cultivares mais estáveis, porém a maior estabilidade esteve sempre associada à maior produtividade no MYD. 'MA-733327' e 'LP 9637' foram os cultivares mais indicados para o conjunto das épocas, águas e inverno, enquanto LP 9637 e FT-Nobre foram os mais estáveis na seca. MYD reuniu simplicidade de procedimento, facilidade de interpretação de resultados, unicidade de parâmetros e associação entre estabilidade e produtividade. Por sua vez, AMMI, além de informar sobre os ambientes, facilitou a identificação dos cultivares estáveis por inspeção visual. Porém sua fundamentação complexa, visto que combina técnicas uni e multivariadas, dificulta seu uso generalizado em programas de melhoramento

Perspectives on the Zika outbreak: herd immunity, antibody-dependent enhancement and vaccine

Submitted by Adagilson Silva ([email protected]) on 2017-05-05T18:22:21Z No. of bitstreams: 1 zika17abr25.pdf: 150751 bytes, checksum: 7c2ffa760d310a51900bc0b7bc387677 (MD5)Approved for entry into archive by Adagilson Silva ([email protected]) on 2017-05-05T18:26:57Z (GMT) No. of bitstreams: 1 zika17abr25.pdf: 150751 bytes, checksum: 7c2ffa760d310a51900bc0b7bc387677 (MD5)Made available in DSpace on 2017-05-05T18:26:57Z (GMT). No. of bitstreams: 1 zika17abr25.pdf: 150751 bytes, checksum: 7c2ffa760d310a51900bc0b7bc387677 (MD5) Previous issue date: 2017Fundação Oswaldo Cruz. Centro de Pesquisas Aggeu Magalhães. Departamento de Virologia e Terapia Experimental. Recife, PE, Brazil.Universidade Federal de Pernambuco. Laboratório de Imunopatologia Keizo Asami. Setor de Virologia. Recife, PE, Brazil.Fundação Oswaldo Cruz. Centro de Pesquisas Aggeu Magalhães. Departamento de Virologia e Terapia Experimental. Recife, PE, Brazil.Fundação Oswaldo Cruz. Centro de Pesquisas Aggeu Magalhães. Departamento de Virologia e Terapia Experimental. Recife, PE, Brazil.Fundação Oswaldo Cruz. Centro de Pesquisas Aggeu Magalhães. Departamento de Virologia e Terapia Experimental. Recife, PE, Brazil

Microbiota no trato digestivo em voluntários saudáveis

PURPOSE: The aim of this study was to standardize the methods of sample collection of mucus from the digestive tract and to determine the microbiota in healthy volunteers from Brazil, collecting samples from the mouth, esophagus, stomach, duodenum, jejunum, ileum, colon, and rectum. METHODS: Microbiota of selected healthy volunteers from the oral cavity (n=10), the esophagus (n=10), the upper digestive tract (n=20), and the lower digestive tract (n=24) were evaluated through distinct collection methods. Collection methods took into account the different sites, using basic scraping and swabbing techniques, stimulated saliva from the oral cavity, irrigation-aspiration with sterile catheters especially designed for the esophagus, a probe especially designed for upper digestive tract, and a special catheter for the lower digestive tract. RESULTS: (i) Mixed microbiota were identified in the oral cavity, predominantly Gram-positive aerobic and anaerobic cocci; (ii) transitional flora mainly in the esophagus; (iii) Veillonella sp, Lactobacillus sp, and Clostridium sp in the stomach and duodenum; (iv) in the jejunum and upper ileum, we observed Bacteroides sp, Proteus sp, and Staphylococcus sp, in addition to Veillonella sp; (v) in the colon, the presence of "nonpathogenic" anaerobic bacteria Veillonella sp (average 10(5) UFC) indicates the existence of a low oxidation-reduction potential environment, which suggests the possibility of adoption of these bacteria as biological markers of total digestive tract health. CONCLUSIONS: The collection methods were efficient in obtaining adequate samples from each segment of the total digestive tract to reveal the normal microbiota. These procedures are safe and easily reproducible for microbiological studies.OBJETIVO: Padronizar os métodos de coleta do muco do trato digestivo e determinar a microbiota, em voluntários saudáveis no Brasil, coletando amostras da boca, esôfago, estômago, duodeno, jejunos e íleo, cólons e reto. MÉTODOS: A microbiota de voluntários saudáveis foi avaliada através de diferentes métodos de coleta: cavidade oral (n=10 voluntários), do esôfago (n=10), do trato digestivo alto (n=20) e do trato digestivo baixo (n=24). Métodos de coleta foram adotados em cada sítio restrito, usando derramar saliva, técnica de esfregar a mucosa e saliva estimulada da cavidade oral, irrigação-aspiração, cateteres específicos designados para o esôfago, sonda especial para o trato digestivo alto e cateteres especiais para o trato digestivo baixo. RESULTADOS: Identificados: (i) na cavidade oral, microbiota mista, predominando cocos aeróbios e anaeróbios Gram positivos; (ii) no esôfago, flora transitória; (iii) no estômago e duodeno, Veillonella sp, Lactobacillus sp and Clostridium sp; (iv) no jejuno e íleo proximal, Bacteróides sp, Proteus sp and Staphilococcus sp, além da Veillonella sp ; (v) no colon, foi revelada a presença "não patogênica" da bactéria anaeróbica Veillonella sp numa concentração média de 10(5) unidades formadoras de colônia, indicando um meio de baixo potencial de oxido-redução e a possibilidade de se conceituar esta bactéria como um marcador biológico do trato digestivo total em sadios. CONCLUSÃO: Estes métodos de coleta foram considerados eficientes para obtenção adequada de amostra em cada segmento do trato digestivo total para caracterizar a microbiota normal. Estes procedimentos são seguros e facilmente reprodutível para estudo microbiológico

Multiplicador de emprego e salário: estudo comparativo para a região sul e restante do Brasil em 1999 e 2004

The objective of this study is to analyze the multiplier effect of jobs and income for the formal and informal categories, in an inter-regional input-output system. Therefore, it was used the array in the Southern Region and the Rest of Brazil, estimated for the years 1999 and 2004 organized in 23 sectors, with microdata from the National Household Sample Survey (PNAD) in the same years. Consider one, the individuals’ characterization according to educational level, age, income, gender and employment category (formal and informal). The main results include a decrease of the contribution from the macros sectors of Agricultural and Services in the regions. The State of Paraná, Santa Catarina and the Rest of Brazil decreased multipliers wages in formal and informal categories for most sectors, which was not observed in Rio Grande do Sul. The largest employment multipliers for both formal and informal categories were to sectors linked to Industry

Densification and mechanical properties of sintered Al2 O3 -Y3 Al5 O12 ceramic composite

In this work, Al2 O3 -Y3 Al5 O12 ceramic composites were developed with different proportions of Al2 O3 -Y2 O3 , which were mixed and compacted at different pressures of 40MPa to 100MPa, being consequently sintered at 1600º C-2h. The sintered samples were characterized by X-ray diffraction presenting α−Al2 O3 and Y3 Al5 O12 as crystalline phases. Samples with relative densities ranging from 78 to 80% and 87 to 91% were obtained depending on the composition and the compaction pressure used. The hardness values obtained were of 1010 to 1080HV and 370- 470HV, for mixes Al2 O3 -Y2 O3 having the composition with levels of 20 and 36.5wt.%, respectively