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Search Results: 1 - 10 of 194733 matches for " Thiago G. Prado "
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A Extended Cosmological Cardy-Verlinde Formula
Thiago G. Prado,Marcos C. Verges
Physics , 2010,
Abstract: E. Verlinde obtained a generalized formula for the entropy of a conformal field theory. For this we consider a (n+1) dimensional closed radiation dominated FLWR in the context of the holographic principle. In this work we construct a extension of the Cardy-Verlinde formula to positive cosmological constant spaces (dS spaces) with arbitrary topology
Química verde, os desafios da química do novo milênio
Prado, Alexandre G. S.;
Química Nova , 2003, DOI: 10.1590/S0100-40422003000500018
Abstract: the fundamental concepts of the green chemistry are highlighted in order to present the enormous number of challenges to develop a new chemistry in research, industry and education. the practice of an environmental friendly chemistry are presented to improve the economics of chemical manufacturing and to enhance the much-tarnished image of chemistry and to present the opportunities to discover and apply this new chemistry. the challenges and opportunities of green chemistry in the world and brazil are introduced and discussed in this report.
Química verde, os desafios da química do novo milênio
Prado Alexandre G. S.
Química Nova , 2003,
Abstract: The fundamental concepts of the green chemistry are highlighted in order to present the enormous number of challenges to develop a new chemistry in research, industry and education. The practice of an environmental friendly chemistry are presented to improve the economics of chemical manufacturing and to enhance the much-tarnished image of chemistry and to present the opportunities to discover and apply this new chemistry. The challenges and opportunities of green chemistry in the world and Brazil are introduced and discussed in this report.
Bases y programa para el control de la fiebre tifoidea con especial referencia a la ciudad de Santiago
CARLOS GARCES,EMILIO PRADO G
Revista chilena de pediatría , 1946,
Abstract:
Efeito da escória, calcário e nitrogênio na absor??o de silício e na produ??o do capim-marandu
Fonseca, Ivana Machado;Prado, Renato de Mello;Vidal, Anelisa de Aquino;Nogueira, Thiago Assis Rodrigues;
Bragantia , 2009, DOI: 10.1590/S0006-87052009000100024
Abstract: this research was carried out in greenhouse conditions with the objective to evaluate the effects of slag and lime plus nitrogen on the soil silicon availability and growth and silicon absorption and growth of marandu palisadegrass (brachiaria brizantha), with two cuts. the treatments were two corrective material types (slag and lime), three corrective material rates (0.81; 1.61 and 3.22 g dm-3 of ecaco3), three nitrogen rates (75, 150 and 300 mg dm-3) plus a control treatment, with four replications. the evaluated parameters were: available soil silicon, dry matter production and shoot silicon and nitrogen. slag rates increased soil and plant silicon contents, but decreased plant nitrogen contents. plant silicon uptake was not affected by lime in the first cutting, but it was reduced in the second cutting. nitrogen fertilization plus slag increased dry matter yield and plant silicon contents.
Potássio no desenvolvimento inicial da soqueira de cana crua
Flores, Rilner Alves;Prado, Renato de Mello;Politi, Lucas Sanches;Almeida, Thiago Batista Firmato de;
Pesquisa Agropecuária Tropical , 2012, DOI: 10.1590/S1983-40632012000100015
Abstract: in the mechanized harvesting without the use of fire, there is deposition of straw on the soil surface, which may be recycled and reduce the potassium fertilization for sugarcane, if compared to the burned sugarcane, what may reflect in a lower production cost. this study aimed to evaluate the potassium application effect in the early development of first cutting sugarcane ratoon (sp 89-1115), in an unburned harvesting system. the experiment was installed in a first sugarcane ratoon area, in a clay oxisol. the treatments consisted of five k2o doses (0 kg ha-1, 32.5 kg ha-1, 65.0 kg ha-1, 130.0 kg ha-1, and 195.0 kg ha-1), as kcl, applied in 2009, in a randomized blocks design with five replications. the growth variables measured were number of tillers, plant height, and stem diameter, 120 days after budding. the potassium application provided a linear increase in the soil potassium content, at the 0-0.20 m and 0.20-0.40 m depth layers, reaching, respectively, 0.18 cmolc dm-3 and 0.12 cmolc dm-3, for the highest k dose. the k fertilization did not affect the number of tillers and stem diameter, but it affected plant height, which reached its highest value at 195.0 kg ha-1 of k2o.
Nutritional disorder of lettuce cv. Veronica in nutrient solution with suppressed macronutrients
Thiago Batista Firmato de Almeida,Renato de Mello Prado,Marcus André Ribeiro Correia,Aline Peregrina Puga
Biotemas , 2011,
Abstract: Lettuce is the most popular of the leafy vegetables. It is known worldwide and its consumption occurs mainly in the natural form. The objective was to evaluate the effect of macronutrient omission on the growth and nutritional status of the lettuce cv. Veronica, and to describe the visual symptoms of nutritional deficiency. The treatments complete consisted of the solution and the individual omission of N, P, K, Ca, Mg and S, under a completely randomized design with three replications. Plants were grown in Hoagland & Arnon, in pots (8L). At 56 days after transplant we evaluated plant height, leaf number, leaf area, SPAD index, dry matter of shoots, roots and whole plant, levels of macronutrients in shoots and roots, and the nature of nutritional disorders. The omission of nutrients affected the growth variables. The nutrients found in lettuce plants from nutrient solution and the complete omission in the shoot were, respectively, N= 23.2 to 9.5, P= 5.4 to 1.3, K= 58,9 to 3.2, Ca= 12.1 to 3.6, Mg= 5.5 to 0.7 and S= 3.2 to 1.5g.kg-1. The omission of macronutrients caused quality losses, since it affected the nutrition of the vegetables and this resulted in morphological changes, reflected as symptoms of deficiency for each nutrient.
The Multidisciplinary Management of Avulsed Teeth: A Case Report
Adriana Jesus Soares ,, , Francisco Souza-Filho,Maíra Prado,Thiago Farias Lima,Alexandre Zaia
Iranian Endodontic Journal , 2012,
Abstract: This paper reports multidisciplinary treatment of a dental trauma case to achieve a favorable prognosis. A healthy 14-year-old girl reported avulsion of teeth 11 and 21 which had occurred three months earlier. The initial treatment consisting of replantation with a semi-rigid splint was performed in hospital. At presentation, the patient was still using the semi-rigid splint. The clinical examination revealed the presence of increased mobility in teeth 11 and 21, and absence of vitality in both. Radiographic examination showed the presence of inflammatory external root resorption in both teeth. The treatment proposed consisted of teeth extraction, a temporary prosthesis followed by adhesive prosthesis, and finally, implant surgery associated with porcelain crowns.
Timoshenko beam with uncertainty on the boundary conditions
Ritto, Thiago G.;Sampaio, Rubens;Cataldo, Edson;
Journal of the Brazilian Society of Mechanical Sciences and Engineering , 2008, DOI: 10.1590/S1678-58782008000400005
Abstract: in mechanical system modeling, uncertainties are present and, to improve the predictability of the models, they should be taken into account. this work discusses uncertainties present in boundary conditions using the model of a vibrating timoshenko beam, free in one end and pinned with rotation constrained by a linear elastic torsional spring in the other end. the finite element method is used to discretize the system and two probabilistic approaches are considered to model the uncertainties: (1) the stiffness of the torsional spring is taken as uncertain and a random variable is associated to it (parametric probabilistic approach); (2) the whole stiffness matrix is considered as uncertain and a probabilistic model is constructed for the associated random matrix (nonparametric probabilistic approach). in both approaches, the probability density functions are deduced from the maximum entropy principle. in the first approach only the uncertainty of a parameter is taken into account, and in the second approach, the uncertainties of the model are taken into account, globally. both approaches are compared and their capability to improve the predictability of the system response is discussed.
Extending INLA to a class of near-Gaussian latent models
Thiago G. Martins,H?vard Rue
Statistics , 2012,
Abstract: This work extends the Integrated Nested Laplace Approximation (INLA) method to latent models outside the scope of latent Gaussian models, where independent components of the latent field can have a near-Gaussian distribution. The proposed methodology is an essential component of a bigger project that aim to extend the R package INLA (R-INLA) in order to allow the user to add flexibility and challenge the Gaussian assumptions of some of the model components in a straightforward and intuitive way. Our approach is applied to two examples and the results are compared with that obtained by Markov Chain Monte Carlo (MCMC), showing similar accuracy with only a small fraction of computational time. Implementation of the proposed extension is available in the R-INLA package.
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