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Search Results: 1 - 10 of 74562 matches for " Flávio Alves da; "
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Uma extens?o ao modelo Schumpeteriano de Crescimento Endógeno
Resende, Marco Flávio da Cunha;Gon?alves, Flávio;
Estudos Econ?micos (S?o Paulo) , 2006, DOI: 10.1590/S0101-41612006000100003
Abstract: in the schumpeterian endogenous growth model, random innovations (technical progress) are the main element that explains economic growth. empirical analyses suggest there are two variables that explain the introduction of innovations: a randomly variable and a deterministic trend. in this paper we add a deterministic variable to the basic schumpeterian growth model. the introduction of a determinist variable improves the basic model. the new model reproduces several styled facts, which are shown in simulations.
Status of Health Promotion Established after the Family Health Strategy  [PDF]
Vanessa Dayanny de Medeiros, Jovanka Bittencourt Leite de Carvalho, Gracimary Alves Teixeira, Flávio César Bezerra da Silva
Open Journal of Nursing (OJN) , 2016, DOI: 10.4236/ojn.2016.612101
Abstract: Objective: To summarize the scientific knowledge concerning the promotion of health after establishing the Family Health Strategy. Method: This is an integrative review conducted in databases: LILACS, MEDLINE/PubMed, SciELO and Cochrane, using following key words: Family Health Strategy; Health Promotion and Health Personnel. Results: After the criteria established 23 articles were selected, identifying strengths, weaknesses and challenges of health promotion after establishing the Family Health Strategy. Conclusion: Despite the effectiveness of health promotion practices in many health units of the family still persist the curative care model.
Changes in Muscle and Collagen Fibers of Fish after Exposure to Urban Pollutants and Biodegradable Detergents  [PDF]
Cynthia Medina Ciamarro, Bruno Fiorelini Pereira, Rebeca Mamede da Silva Alves, Jo?o Rodolfo Tuckumantel Valim, Dimítrius Leonardo Pitol, Flávio Henrique Caetano
Microscopy Research (MR) , 2015, DOI: 10.4236/mr.2015.33005
Abstract: Fish populations are sensitive to environmental impact resulting from many factors, as an introduction of exotic species, industrial or residual waste, oil spills, pesticides or other agents that can directly affect the ecology and species survival. Astyanax altiparanae is pelagic and active swimmer specie and can have serious implications on its way of life as changes in muscle structure of fish may occur since the presence of pollutants in the water. In this study we analyze the alterations in Muscle and collagen fibers of the pectoral muscles and pollutants exposed flows contained in water with biodegradable detergents, and water coming from the Blue Lake, River clear-SP (2o24'39\"S, 47o33'39\"E) diluted. Effects of these exposures were analyzed during the period of seven and thirty days. Compared with acclimatized fish (Astyanax altiparanae) with pure water from an artesian well, the muscle fibers morphology and collagen concentration on them have changed due to the exposure to urban pollutants and biodegradable detergents.
Desenvolvimento e valida??o de método analítico para determina??o de benzoato, sorbato, metil e propilparabenos em produtos alimentícios utilizando a eletroforese capilar
Petruci, Jo?o Flávio da Silveira;Cardoso, Arnaldo Alves;Pereira, Elisabete Alves;
Química Nova , 2011, DOI: 10.1590/S0100-40422011000700014
Abstract: in this work, a rapid and simple method using capillary electrophoresis (ce) was developed for the determination of the benzoate, sorbate, methyl and propylparaben in foodstuffs. a running buffer consisting of 20 mmol l-1 (ph = 9.3) tetraborate enabled separation of the analytes in less than 5 min. the detector wavelength was set at 220 nm. the method was successfully applied to the analysis of sodas, sweeteners, sauces and juices. the range of preservatives found were from 478.5-466.6 mg kg-1 for methylparaben , 83.7-231.3 mg kg-1 for sorbate and 336.7-428.3 mg kg-1 for benzoate.
Yield and Chemical Composition of Brachiaria Forage Grasses in the Offseason after Corn Harvest  [PDF]
Gean Alves Maia, Kátia Aparecida de Pinho Costa, Eduardo da Costa Severiano, Patrícia Soares Epifanio, José Flávio Neto, Matheus Gon?alves Ribeiro, Patrick Bezerra Fernandes, José Fausto Guimar?es Silva, Wainer Gomes Gon?alves
American Journal of Plant Sciences (AJPS) , 2014, DOI: 10.4236/ajps.2014.57106
Abstract:

This study evaluated the dry matter production and chemical composition of Brachiaria forage grasses in the offseason after corn harvest in integrated crop-livestock system. The experiment was conducted at the Federal Institute of Goiás, Rio Verde Campus, using a randomized complete block experimental design, with four replications. The treatments consisted of the forages: Brachiaria brizantha cv. Marandu; Brachiaria brizantha cv. Xaraes; Brachiaria brizantha cv. Piata; Brachiaria brizantha cv. MG-4; Brachiaria decumbens and Brachiaria ruziziensis, intercropped in oversown corn for implantation of integrated crop-livestock system. The results showed that intercropping corn with Brachiaria grasses favors the production of high-quality forage in the offseason, and the cultivars of Brachiaria brizantha and Brachiaria

Effects of Biodegradable Detergents in Morphological Parameters of Liver in Two Neotropical Fish Species (Prochilodus lineatus and Astyanax altiparanae)  [PDF]
Bruno Fiorelini Pereira, Rebeca Mamede da Silva Alves, Anderson Luis Alves, José Augusto Senhorini, Rita de Cássia Gimenes de Alcantara Rocha, Priscilla Hakime Scalize, Dimítrius Leonardo Pitol, Flávio Henrique Caetano
Microscopy Research (MR) , 2014, DOI: 10.4236/mr.2014.22006
Abstract:

Indiscriminate disposal of residues of domestic and/or industrial origin in aquatic ecosystems resulting from urban activities causes concern about their effects on the fauna. Substances absorbed by animals, such as those cited above, are metabolized by the liver, as it is the main target organ of several pollutants and also exercises basic vital functions in the organism. For this reason the liver is used as the main and most reliable biomarker in environmental studies. Thus the objective of the present study was to identify hepatic alterations resulting from exposure to water contaminated by a few commercial brands of biodegradable detergents and their effects when present together with several other contaminants found in nature. For such, a solution of 1 ppm of biodegradable detergents and water from an urban lake were tested on two widely distributed native Brazilian fish (Astyanax altiparanae and Prochilodus lineatus). Several alterations were found on the liver, including cytoplasm vacuolization, nuclear displacement, macrophage recruitment and reduced liver glycogen, showing a degenerative process in the liver of the fish, due to the action of contaminants.

Convergência, para onde? Uma análise da dinamica de distribui??o de renda per capita a partir do modelo de misturas finitas
Catela, Eva Yamila da Silva;Gon?alves, Flávio de Oliveira;
Economia Aplicada , 2009, DOI: 10.1590/S1413-80502009000300005
Abstract: different growth theories implies in different patterns of per capita income distribution between countries. the empirical validation to these theories assumes some non-commonly verified stochastic processes properties. this paper seeks for theseis properties and discusses the existence of per capita income clubs in the world economy by analyzing the distribution of per capita income in 134 countries during the period 1970-2003. the conclusions show stratification in three groups, with path dependence and no lock in, that is, there is a high probability of maintenance of the status quo, while there exists a small probability of migration between groups.
Intensidade tecnológica das exporta??es mundiais: uma análise de misturas finitas e do "learning-by-exporting"como determinante
Catela, Eva Yamila da Silva;Gon?alves, Flávio de Oliveira;
Nova Economia , 2011, DOI: 10.1590/S0103-63512011000300003
Abstract: this text studies the characteristics and determinants of exports of high tech goods to 123 countries worldwide over the 1986-2004 period. firstly, from the finite mixtures method, the existence of clubs in exporting high tech in the world is discussed. three groups are identified, showing low transition of components over time, demonstrating the cumulativeness and irreversibility of high tech trade. secondly, from the panel model the determinants of such exports are analyzed, considering among other things, the importance of learning by exporting and of human capital.
Dinámicas tecnológicas y el mercado internacional de bienes de alta tecnología
Catela, Eva Yamila da Silva;Gon?alves, Flávio de Oliveira;
Investigación económica , 2009,
Abstract: this paper discusses the existence of high tech export clubs in the world economy by analyzing the distribution of technology-intensive exports in 123 countries during the period 1985-2004. the findings are compatible with the conclusions of the seminal work of quah (1996), showing that in spite of the high probability of maintenance of the status quo, there exists a small probability of migration between groups. the irreversibility of the technological trajectories is discussed. the paper contributes to the convergence literature in two ways. first it provides estimations of the parameter values leading to club convergence in the world economy. secondly, it describes how club members interact, within and between groups, in terms of trade and technology flows.
Propriedades físicas de um Latossolo Vermelho sob cultivo de arroz de terras altas em diferentes manejos do solo e água
Kamimura, Karina Marie;Alves, Marlene Cristina;Arf, Orivaldo;Binotti, Flávio Ferreira da Silva;
Bragantia , 2009, DOI: 10.1590/S0006-87052009000300020
Abstract: for rice crops, the inadequate soil management can lead to superficial and sub-superficial compaction which, by limiting root development and water retention, limits crop growth and yield. this study was aimed at evaluating the soil and water management effect on the physical properties of an oxisol under non-flooded rice. the experiment was carried out at selvíria (ms), in the growing season of 2003/2004, in an area which had previously been under millet crop. a randomized complete block design was used in a 3 x 3 factorial scheme, based on three different soil managements (chisel plow + levelling harrow, harrow + levelling harrow and no-tillage) and three different water managements (not irrigated; irrigated during the reproductive and ripening stages; irrigated during all the stages), with 4 replications. macroporosity, microporosity, total porosity, soil bulk density, soil penetration resistance, soil moisture content, hydraulic conductive of the saturated soil and water infiltration were analysed. soil tillage with chisel plow produced greater macroporosity and total porosity, and lower soil bulk density and soil penetration resistance in the 0.00 to 0.20 m layer, opposite results obtained with harrow tillage. harrow tillage formed a compacted layer at the depth of (0.10-0.20 m). smaller macroporosity and total porosity was found in no-tillage together with greater soil penetration resistance and soil bulk density, all in the first 0.10 m. soil physical properties were influenced by soil management, but not influenced by water management. the soil management with chisel plow showed better results concerning the soil physical properties for the development of rice.
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