oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

4 ( 1 )

2019 ( 29 )

2018 ( 202 )

2017 ( 170 )

Custom range...

Search Results: 1 - 10 of 82815 matches for " Dias Guilherme Faus da Silva "
All listed articles are free for downloading (OA Articles)
Page 1 /82815
Display every page Item
Brachiaria decumbens supresses the initial growth of Coffea arabica
Dias, Guilherme Faus da Silva;Alves, Pedro Luís da Costa Aguiar;Dias, Tomás Carneiro de Souza;
Scientia Agricola , 2004, DOI: 10.1590/S0103-90162004000600003
Abstract: brachiaria decumbens is becoming one the most common weeds growing in young coffee orchards because, besides its fast growth and difficulty of control, new coffee orchards are usually established in pasture areas. in order to verify the effect of b. decumbens plant density on the early growth of coffee (coffea arabica l. cv. catuaí amarelo), a competition experiment was conducted under semi-controlled humidity conditions. soil collected in a typic haplustox was placed in 70 l asbestos cement boxes and one coffee seedling was planted in each box. the b. decumbens seedlings were transplanted to the boxes at the 2-4 leaf stage. treatments consisted of 0, 4, 8, 12, 16, 20, 24, 36, 48, and 60 weeds m-2. the experimental period started 120 days after transplanting and the experimental design was organized as completely randomized blocks, with four replicates. all coffee plant parameters evaluated were negatively affected by the interference. the most sensitive characteristics were leaf area (41.8% reduction with 8 plants m-2, reaching 68.7% at a density of 60 plants m-2). therefore, at a density of 8 plants m-2 the reduction in leaf dry biomass was 41.4% compared with the check. at the density of 60 plants m-2 it was 72.8%. b. decumbens, at a density of 8 or more plants m-2, suppressed coffee plants during a growth period of 120 days.
Brachiaria decumbens supresses the initial growth of Coffea arabica
Dias Guilherme Faus da Silva,Alves Pedro Luís da Costa Aguiar,Dias Tomás Carneiro de Souza
Scientia Agricola , 2004,
Abstract: Brachiaria decumbens is becoming one the most common weeds growing in young coffee orchards because, besides its fast growth and difficulty of control, new coffee orchards are usually established in pasture areas. In order to verify the effect of B. decumbens plant density on the early growth of coffee (Coffea arabica L. cv. Catuaí Amarelo), a competition experiment was conducted under semi-controlled humidity conditions. Soil collected in a Typic Haplustox was placed in 70 L asbestos cement boxes and one coffee seedling was planted in each box. The B. decumbens seedlings were transplanted to the boxes at the 2-4 leaf stage. Treatments consisted of 0, 4, 8, 12, 16, 20, 24, 36, 48, and 60 weeds m-2. The experimental period started 120 days after transplanting and the experimental design was organized as completely randomized blocks, with four replicates. All coffee plant parameters evaluated were negatively affected by the interference. The most sensitive characteristics were leaf area (41.8% reduction with 8 plants m-2, reaching 68.7% at a density of 60 plants m-2). Therefore, at a density of 8 plants m-2 the reduction in leaf dry biomass was 41.4% compared with the check. At the density of 60 plants m-2 it was 72.8%. B. decumbens, at a density of 8 or more plants m-2, suppressed coffee plants during a growth period of 120 days.
Microphysical evidence of the transition between predominant convective/stratiform rainfall associated with the intraseasonal oscillation in the Southwest Amazon
Albrecht, Rachel Ifanger;Silva Dias, Maria Assun??o Faus da;
Acta Amazonica , 2005, DOI: 10.1590/S0044-59672005000200007
Abstract: the distinction between convective and stratiform precipitation profiles around various precipitating systems existent in tropical regions is very important to the global atmospheric circulation, which is extremely sensitive to vertical latent heat distribution. in south america, the convective activity responds to the intraseasonal oscillation (ios). this paper analyzes a disdrometer and a radar profiler data, installed in the ji-paraná airport, ro, brazil, for the field experiment wetamc/lba & trmm/lba, during january and february of 1999. the microphysical analysis of wind regimes associated with ios showed a large difference in type, size and microphysical processes of hydrometeor growth in each wind regime: easterly regimes had more turbulence and consequently convective precipitation formation, and westerly regimes had a more stratiform precipitation formation.
Um desafio novo: o biodiesel
Dias, Guilherme Leite da Silva;
Estudos Avan?ados , 2007, DOI: 10.1590/S0103-40142007000100014
Abstract: the regulatory framework for fuels in brazil is an effective monopoly, with matching prices for close substitutes. biodiesel prices are unattractive because domestic diesel prices are below international relative oil prices, transportation logistics burden furthermore with unnecessary routes designed for fossil fuels, beyond heavy indirect taxation. an alternative framework, without taxation, for short distance supply, with a large variety of raw materials is better suited for technological innovation.
Brasil: o futuro da economia
Dias, Guilherme Leite da Silva;
Estudos Avan?ados , 2006, DOI: 10.1590/S0103-40142006000100006
Abstract: the purpose of this paper is to call attention to the lack of brazilian domestic saving since the seventies, when investment was still going high. in the literature of dependent capitalism we find a source of explanation, as well as in the nature of the rupture in the nationalistic development process during the eighties. as a consequence, economic reforms alone will not bring back the dynamics of growth. what is missing is of a social and political nature, the dynamics between basic capitalist agents (national, multinational, burocrats and consumers) real tenants of economic power and political representation, one fearing the other and by due consequence following the rules of the game (development).
O Estado e o Agro em tempos de liberaliza??o
Dias, Guilherme Leite da Silva;
Revista de Economia e Sociologia Rural , 2006, DOI: 10.1590/S0103-20032006000300001
Abstract: conflicts following from rural credit indebt ness and excessive concentration of land ownership have been dealt by the central executive office without the intermediation of local farmers organization and social movements. the political representation of these interests in congress and close to the executive bare a fundamental bias toward cost socialization and further concentration of benefits.
Brasil: o futuro da economia
Dias Guilherme Leite da Silva
Estudos Avan?ados , 2006,
Abstract: A PROPOSI O deste artigo é chamar a aten o para a falta de dinamismo da poupan a doméstica já no início da década de 1970, quando o investimento era elevado. A raz o desse baixo dinamismo está identificada na literatura que analisou o nosso capitalismo dependente. A forma como se deu a ruptura do modelo nacional-desenvolvimentista também é importante para entender as limita es do momento atual. O efeito esperado das reformas econ micas em curso sobre o crescimento econ mico fica comprometido, e n o será pela execu o complementar da agenda que ele voltará a ocorrer. A dificuldade apontada está na natureza social e política do modelo de desenvolvimento; falta a dinamica dos agentes econ micos básicos (capitalista nacional, multinacional, burocrata e consumidor) como entidades reais detentoras de poder econ mico e de representatividade política, temidas umas pelas outras e, portanto, respeitando a regra do jogo (desenvolvimento). O capitalismo nacional precisa de capacita o tecnológica e de inova o, assim como de um padr o de regula o adequado, para recuperar um papel relevante na governan a das cadeias industriais. Esse é o elemento de confian a que, junto com as reformas, poderia recuperar um patamar superior de poupan a doméstica.
Intera??es entre nuvens, chuvas e a biosfera na Amaz?nia
Silva Dias, Maria Assun??o Faus da;Cohen, Julia Clarinda Paiva;Gandú, Adilson Wagner;
Acta Amazonica , 2005, DOI: 10.1590/S0044-59672005000200011
Abstract: a review of results obtained within the physical climate component of lba with respect to the interaction between the biosphere and cloud and rain formation in the amazon basin, in different seasons and different regions within the basin is presented. the deforestation effect and the effect of biomass burning are discussed and the physical processes highlighted based on the data collected in several lba intensive field campaigns. the complex interactions and the progress in the understanding their evolution based on the new datasets is presented.
Crise político-econ?mica: as raízes do impasse
Dias, Guilherme Leite da Silva;Aguirre, Basilia Maria Baptista;
Estudos Avan?ados , 1992, DOI: 10.1590/S0103-40141992000100006
Abstract: political and economic compromises at the first stage of the current redemocratization process are today strong obstacles to institucional reforms thought to be required in any new growth strategy. the role of regional interests, conflicts between industries in existence before ii national plan of development and those there after installed and public sector foreign debt are emphasized. a final reference is also made about current government rethoric and effective indicators of any rupture in this scenario of impasse.
Fiscal reform and federal relations: Brazilian deadlocks
Aguirre, Basilia Maria Baptista;Dias, Guilherme Leite da Silva;
Revista de Economia Política , 2009, DOI: 10.1590/S0101-31572009000100003
Abstract: brazilian fiscal reform got to deadlocks because proposals tried to avoid considering federal relations. there are two main types of federal relations: the competitive and the cooperative. in both types is possible to observe coordination mechanisms. brazilian federalism is a mixture of both types what leads to difficulties finding solutions. we argue that is more important to find mechanisms to facilitate cooperation than to discuss the qualities of any alternative fiscal structure. fiscal reforms brings along a great deal of uncertainty. so it is important to discuss the reform timing and the compensation mechanisms before hand.
Page 1 /82815
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.