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Search Results: 1 - 10 of 5605 matches for " Girlene Figueiredo Maciel "
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Global warming impacts on the soybean climatic risk zoning in Tocantins State, Brazil
Girlene Figueiredo Maciel,Pedro Vieira de Azevedo,Aderson Soares de Andrade Júnior
Engenharia Ambiental : Pesquisa e Tecnologia , 2009,
Abstract: The main objective of this work is to analyze the possible impacts on areas considered favorable for soybean cultivation in the state of Tocantins, for the current scenarios and under the expected climatic changes deriving from global warming for soils of type 1 (sandy texture), type 2 (medium texture) and type 3 (loamy texture). The simulations of the decennial climatic water balances were obtained by using the software SARRAZON. An increase of 1.8oC in the mean temperature (scenario B1 - IPCC (2007)) was considered for such purpose, as well as a precipitation decrease of 10%. The results showed that for type 1 soils (low water availability), the favorable areas (low climatic risk) decreased from 268,719.98 km2 to 33,550.19 km2 for a sowing indication of November 15, representing a reduction of 88%. For soils of types 2 and 3, considering the indication of the same sowing date, the reduction percentages were 8.1% and 5.5%, respectively.
Diego Robson Rocha dos Santos,Aurélio Pess?a Pican?o,Girlene Figueiredo Maciel,Juan Carlos Valdés Serra
Revista Geográfica Acadêmica , 2010,
Abstract: The main objective of this paper was to establish an inventory of the Federal University of Tocantins’Greenhouse Gases (GHGs) emissions derived from controlled sources and administrative activities conducted in 2009 by the Rectory and the University Campus of Palmas, in order to calculate the number of Savanna’s native trees to be planted in the region of the county of Palmas-TO to neutralize GHG emissions reported in carbon dioxide equivalent (CO2e). Utilizing the Specifications of the Brazilian Program GHG (Greenhouse Gas) Protocol for this purpose associated with the calculus methodologies of GHG emissions published by the Intergovernmental Panel on Climate Change (IPCC) for the completion of the inventory, as well as using the Good Practice Guide for Land Use, Land-Use Change and Forestry (LULUCF) published by the IPCC forneutralization of CO2e calculus. The inventory result showed that the listed units emitted around 218tCO2e and for its neutralization, it would be necessary to plant approximately 1.702 trees for sequestering all CO2e over a period of 20 years. The methodologies used for the composition of the GHG inventory came up as excellent tools for determining the emission profile. Despite the uncertainties about the carbon fixation rate, it can be used to calculate the neutralization of GHG as a way of environmental mitigation.
Error Analysis in Measured Conductivity under Low Induction Number Approximation for Electromagnetic Methods
George Caminha-Maciel,Irineu Figueiredo
ISRN Geophysics , 2013, DOI: 10.1155/2013/720839
Abstract: We present an analysis of the error involved in the so-called low induction number approximation in the electromagnetic methods. In particular, we focus on the EM34 equipment settings and field configurations, widely used for geophysical prospecting of laterally electrical conductivity anomalies and shallow targets. We show the theoretical error for the conductivity in both vertical and horizontal dipole coil configurations within the low induction number regime and up to the maximum measuring limit of the equipment. A linear relationship may be adjusted until slightly beyond the point where the conductivity limit for low induction number ( ) is reached. The equations for the linear fit of the relative error in the low induction number regime are also given. 1. Introduction The induction method consists basically in determining subsurface rock conductivities with the help of electromagnetic fields generated by a coil at the Earth’s surface and by catching the response to this field from the conducting media under surface by using a reception coil [1–3]. From the Maxwell equations, in particular the Faraday induction law applied to an infinite homogenous half-plane, the subsurface rock conductivity can be estimated through the ratio between the magnetic field measured in the receiving coil and the magnetic field produced at the transmission coil with both at surface. Then we can take laterally distributed measurements along a transect for identifying conductivity-related anomalies. We can also get information on the vertical conductivity structure by varying the coil’s dipole configurations (vertical dipole or horizontal dipole) as well as by increasing the instrument height. This information is very useful in several geophysical problems as, for example, water prospecting or mapping pollution plumes. The basic model for both configurations is described in Figure 1 where a transmission coil Tx with a given alternate electric current at a given frequency is located on the terrain (assumed to be an uniform semiplane) and a receiving coil Rx is located at a short distance from Tx. The time variation of the magnetic field , called primary magnetic field, produced by the electric current in the transmission coil generates a small alternate current in the soil. This electric current, on its turn, produces a magnetic field , called secondary field, which can be measured at the receiving coil together with the primary field. Figure 1: Representation of the transmission (Tx) and reception (Rx) coils for both the vertical and the horizontal dipole configurations.
FIGUEIREDO, Izabel Cristina,MACIEL, Bruno Ferreira,MARQUES, Marcos Omir
Nucleus , 2008,
Abstract: The sugarcane quality, to alcohol industrial process, is a main factor to define the bestdevelopment of the alcoholic fermentation process and of the general industrial process. Among factors, these thataffect sugarcane quality, by other material except stalks, such as soil, stones, other plants, and compounds frommicrobiologic activity on sugar, are named extrinsic factors. The extrinsic factors are affected by mechanic stalksdamage, insects and plants diseases occurrence, rain, air relative moisture, environment temperature, sugarcaneharvest and transport systems. Therefore, in this paper, these factors will be analyzed in relation to the forms thataffect raw matter and final products quality.A qualidade da cana-de-a úcar como matéria-prima para obten o de álcool é o principal fator aser levado em conta para o melhor desempenho da fermenta o alcoólica. Assim, nos últimos anos a maioria dasempresas tem demonstrado a grande importancia dos fatores intrínsecos e extrínsecos que afetam a qualidade dacana-de-a úcar. Fatores extrínsecos s o aqueles que est o relacionados com materiais estranhos ao colmo (terra,pedra, restos de cultura, plantas invasoras) ou compostos que s o produzidos por microrganismos devido a suaa o sobre os a úcares do colmo. Esses fatores s o afetados por danos no colmo, pragas e doen as, chuva, umidaderelativa do ar, temperatura do ambiente, subsistemas de colheita e de transporte de cana. Assim, nesta revis o seráanalisado como esses fatores podem influenciar na qualidade da matéria-prima afetando o produto final.
Transitive orientations in bull-reducible Berge graphs
Celina de Figueiredo,Frederic Maffray,Claudia Villela Maciel
Mathematics , 2008,
Abstract: A bull is a graph with five vertices $r, y, x, z, s$ and five edges $ry$, $yx$, $yz$, $xz$, $zs$. A graph $G$ is bull-reducible if no vertex of $G$ lies in two bulls. We prove that every bull-reducible Berge graph $G$ that contains no antihole is weakly chordal, or has a homogeneous set, or is transitively orientable. This yields a fast polynomial time algorithm to color exactly the vertices of such a graph.
Associa??o Brasileira de Epilepsia: a história de duas décadas de atua??o e servi?o à comunidade
Guilhoto, Laura Maria de Figueiredo Ferreira;Bononi, Filipe Meneghelli;Mesquita, Sueli;Santos, Cristiane Maciel dos;
Journal of Epilepsy and Clinical Neurophysiology , 2008, DOI: 10.1590/S1676-26492008000200007
Abstract: objective: the "associa??o brasileira de epilepsia" (abe) is a non profit society, which has been organized as an institution mainly interested in divulging knowledge about the epilepsies and in promoting improvement of the quality of life of people with epilepsy. the aim of this revision is to describe the activities of abe since its foundation in 1987. methods: historical review of abe activities. results: abe is composed by people with epilepsy and their relatives, physicians, neuroscientists and other professionals allied to medicine. it was founded by prof. esper abr?o cavalheiro of "universidade federal de s?o paulo" (unifesp) in 1987. abe was accepted as the brazilian chapter of the international bureau for epilepsy (ibe) in 1991 and was declared full member of ibe in december 18th, 2005. abe received its "cnpj" number in june, 23rd, 2003 and its statute was reformulated according to the new civilian brazilian code in 2003, which was registered in legal entities registry office in september 16th, 2004. abe was qualified as an organization of civilian society with public interest (oscip) by brazilian minister of justice in january, 7th, 2005, published in official diary in january 17th, 2005. abe promotes monthly seminars about related subjects and the associates may also take part in several activities, including the project of painting "arte e vida", literature, expression and handcraft offices during weekly classes. conclusion: the "associa??o brasileira de epilepsia" has promoted in the last 20 years broad understanding of the epilepsies trough the dissemination of knowledge to general society, in order to reduce the stigma and the prejudice of the society towards the people with epilepsy.
Tra??o cutanea intraoperatória para fechamento de ferida após mastectomia bilateral higiênica: relato de caso
Figueiredo, Jason César Abrantes de;Rosique, Rodrigo Gouvea;Maciel, Patricia Jackeline;
Revista Brasileira de Cirurgia Plástica , 2011, DOI: 10.1590/S1983-51752011000100029
Abstract: introduction: the post-mastectomy chest wall defects require reconstruction by a safe and efficient procedure. in cases of local recurrence, especially bilateral, surgical intervention should be indicated given the patient's general condition and life expectancy. the intraoperative traction is a technique with low morbidity and rapid execution, reducing the scars from the use of flaps. case report: female patient, 45 years old, after diagnosis of recurrence in right breast and a new tumor in left breast, was submitted to hygienic bilateral mastectomy with dissection of left axillary lymph nodes. opted for intraoperative skin traction of the chest wall wound edges for primary closure due to the general state of the patient. traction was performed according to the góes et al. technique, using prolene 2 sutures, stretching the skin for ten minutes, resting for two minutes, until they gain sufficient proximity of the edges of the wound to perform primary suture. this was achieved after three cycles of tension and relaxation. the procedure lasted two hours and was used aspiratory drainage with portovac 3.2 drain, which was removed after 7 days. the patient had no pain complaints, suture without dehiscence or any other complication. conclusion: the intraoperative traction proved to be a safe, functionally efficient, with lower costs and lower morbidity, to close wounds resulting from hygienic bilateral mastectomy hygienic.
Análise espacial da tuberculose infantil no estado do Espírito Santo, 2000 a 2007
Sales, Carolina Maia Martins;Figueiredo, Túlio Alberto Martins de;Zandonade, Eliana;Maciel, Ethel Leonor Noia;
Revista da Sociedade Brasileira de Medicina Tropical , 2010, DOI: 10.1590/S0037-86822010000400020
Abstract: introduction: childhood tuberculosis is responsible for 15% of case notifications. the focus of tuberculosis control national program is on identifying tuberculosis in adults, while leaving children under 15 years of age on the margins of studies, diagnoses and treatment. spatial analysis quantifies the exposition to the illness and displays the main causes relating to geographical space. the objective of this study was to analyze the spatial distribution of childhood tuberculosis in espírito santo, between 2000 and 2007, according to the municipality of notification methods: an ecological study was conducted on 515 cases of childhood tuberculosis that occurred between 2000 and 2007. the local empirical bayesian method was used to measure the risk. the moran local index was calculated in order to evaluate autocorrelations between threshold districts results: high incidence rates were found in the metropolitan region of vitória and the northeastern region, and lower rates were found in the southeastern region. similar data were observed in a study on endemic tuberculosis among adults in espírito santo. this is possibly related to contacts within the home conclusions: this study identified possible areas of recent transmission of the disease. it is important to emphasize that knowledge of the high priority areas for tuberculosis control may help public administrators to diminish healthcare iniquities and enable improvement of resources and teams for controlling childhood tuberculosis.
Revista Brasileira de Milho e Sorgo , 2012,
Abstract: Doru luteipes (Scudder) (Dermaptera: Forficulidae) is considered an efficient predator and studieshave shown the possibility of using the natural enemy to control Spodoptera frugiperda (J. E. Smith) (Lepidoptera:Noctuidae) in maize (Zea mays L.). The aim of this study was to evaluate the effects of insecticides registered forthe control of S. frugiperda in crop corn on eggs and first instars nymphs of the predator D. luteipes. The viabilityof eggs treated with insecticides and insect survival rate in each instar were evaluated. After 96 hours of exposure,all insecticides were classified as harmful (class 4) for the first instars nymphs of D. luteipes. As for the egg viabilityof D. luteipes, triflumuron, thiamethoxam + λ-cyhalothrin and teflubenzurom + α-cypermethrin were toxic (class 4);clofenapir and spinosad slightly harmful (class 2) and etofenprox harmless (class 1). The insecticides showed nophysiological selectivity to nymphs of D. luteipes and should be evaluated under semi-field and field conditions inorder to confirm the results obtained in real conditions of the culture.
Microcanonical Monte Carlo Study of One Dimensional Self-Gravitating Lattice Gas Models
J. M. Maciel,M. A. Amato,T. M. Rocha Filho,A. D. Figueiredo
Physics , 2015,
Abstract: In this study we present a Microcanonical Monte Carlo investigation of one dimensional self-gravitating toy models. We study the effect of hard-core potentials and compare to those results obtained with softening parameters and also the effect of the geometry of the models. In order to study the effect of the geometry and the borders in the system we introduce a model with the symmetry of motion in a line instead of a circle, which we denominate as $1/r$ model. The hard-core particle potential introduces the effect of the size of particles and, consequently, the effect of the density of the system that is redefined in terms of the packing fraction of the system. The latter plays a role similar to the softening parameter $\epsilon$ in the softened particles' case. In the case of low packing fractions both models with hard-core particles show a behavior that keeps the intrinsic properties of the three dimensional gravitational systems such as negative heat capacity. For higher values of the packing fraction the ring the system behaves as the Hamiltonian Mean Field model and while for the $1/r$ it is similar to the one-dimensional systems.
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