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Search Results: 1 - 10 of 13140 matches for " Flávio;Delgado "
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Tratamentos integrados em efluente metal-mecanico: precipita??o química e biotratamento em reator do tipo air-lift
Queissada, Daniel Delgado;Silva, Flávio Teixeira da;Paiva, Teresa Cristina Brazil de;
Engenharia Sanitaria e Ambiental , 2011, DOI: 10.1590/S1413-41522011000200012
Abstract: the objectives of this paper were: to perform the physical-chemical characterization of a metalworking effluent and to carry out the integrated treatment (chemical precipitation and biotreatment), using effluent autochthonous microorganisms (fi and fv) and a reference (a. niger). the characterization indicated ph of 1.7; color, 1,495 mg pt.l-1; chemical oxygen demand, 9,147 mgo2.l-1; oil and grease, 887 mg.l-1, and dissolved oxygen with 2.5 mgo2.l-1. with the chemical precipitation treatment, in ph = 7.5, the reduction of all the investigated metallic ions was obtained. the color was reduced 95% after the biotreatment using the fv microorganism. the chemical oxygen demand and oil and grease reductions were more significant when using fi, which reduced the same in 52 and 62%, respectively. these results indicated that the autochthonous microorganisms were more efficient in the effluent treatment than the reference organism a. niger.
Mean and Interannual Variability of Maize and Soybean in Brazil under Global Warming Conditions  [PDF]
Flávio Justino, Evandro Chaves Oliveira, Rafael de ávila Rodrigues, Paulo Henrique Lopes Gon?alves, Paulo Jorge Oliveira Ponte Souza, Frode Stordal, José Marengo, Thieres G. da Silva, Rafael Coll Delgado, Douglas da Silva Lindemann, Luiz Claudio Costa
American Journal of Climate Change (AJCC) , 2013, DOI: 10.4236/ajcc.2013.24024
Abstract:

Brazil is responsible for 27% of the world production of soybeans and 7% of maize. Mato Grosso and Para states in Brazil are among the largest producer. The viability to the cultivation of maize (Zea mays) and soybeans (Glycine max), for future climate scenarios (2070-2100, GHG) is evaluated based on crop modeling (DSSAT) forced by observational data and regional climate simulations (HadRM3). The results demonstrated that a substantial reduction in the yield in particular for maize may be expected for the end of the 21st century. Distinct results are found for soybeans. By applying the A2 climate changes scenario, soybean yield rises by up top 60% assuming optimum soil treatment and no water stress. However, by analyzing the inter-annual variability of crop yields for both maize and soybean, could be demonstrated larger year-to-year fluctuations under greenhouse warming conditions as compared to current conditions, leading to very low productivity by the end of the 21st century. Therefore, these Brazilian states do not appear to be economically suitable for a future cultivation of maize and soybeans. Improved adaptation measures and soil management may however partially alleviate the negative climate change effect.

Hospital malnutrition and inflammatory response in critically ill children and adolescents admitted to a tertiary intensive care unit
Delgado, Artur F.;Okay, Thelma S.;Leone, Claudio;Nichols, Buford;Del Negro, Gilda Maria;Vaz, Flávio Adolfo Costa;
Clinics , 2008, DOI: 10.1590/S1807-59322008000300012
Abstract: critical illness has a major impact on the nutritional status of both children and adults. a retrospective study was conducted to evaluate the incidence of hospital malnutrition at a pediatric tertiary intensive care unit (picu). serum concentrations of il-6 in subgroups of well-nourished and malnourished patients were also evaluated in an attempt to identify those with a potential nutritional risk. methods: a total of 1077 patients were enrolled. nutritional status was evaluated by z-score (weight for age). we compared mortality, sepsis incidence, and length of hospital stay for nourished and malnourished patients. we had a subgroup of 15 patients with severe malnutrition (mn) and another with 14 well-nourished patients (wn). cytokine il-6 determinations were performed by enzyme-linked immunosorbent assay. results: 53% of patients were classified with moderate or severe malnutrition. similar amounts of c- reactive protein (crp) were observed in wn and mn patients. both groups were able to increase il-6 concentrations in response to inflammatory systemic response and the levels followed a similar evolution during the study. however, the mean values of serum il-6 were significantly different between wn and mn patients across time, throughout the study (p = 0.043). discussion: a considerable proportion of malnourished patients need specialized nutritional therapy during an intensive care unit (icu) stay. malnutrition in children remains largely unrecognized by healthcare workers on admission. conclusions: the incidence of malnutrition was very high. malnourished patients maintain the capacity to release inflammatory markers such as crp and il-6, which can be considered favorable for combating infections on the other hand, this capacity might also have a significant impact on nutritional status during hospitalization.
Um método evolucionário para sintonia de controladores PI/PID em processos multivariáveis
Arruda, Lúcia Valéria R. de;Swiech, Maria Cristina Szpak;Neves-Jr, Flávio;Delgado, Myriam Regattieri;
Sba: Controle & Automa??o Sociedade Brasileira de Automatica , 2008, DOI: 10.1590/S0103-17592008000100001
Abstract: nonlinear multiple-input multiple-output (mimo) processes which are common in industrial plants are characterized by significant interactions and nonlinearities among their variables. thus, the tuning of several controllers in complex industrial plants is a challenge for process engineers and operators. this paper addresses the problem of simultaneously tuning n proportional-integral-derivative (pi/pid) controllers in a coupled multivariable process as a multi-criteria optimization problem. a multi objective genetic algorithm modified by a niching technique with castes formation is proposed to solve this problem. the optimization is carried out in two levels. in the first level a local function that considers both the integral time squared error (itse) and the minimum variance criteria is computed to separately evaluate the performance of each closed loop. thereafter, a global cost function that considers all the loops is used to compute a set of solutions (a set of pi/pid parameters) to the optimization problem. the proposed system was applied to the control of a fluid catalytic cracking (fcc) unit, and its performance was compared to dynamic matrix control (dmc). the results show the applicability and effectiveness of the proposed method.
The Mathematics in the Social Studies Textbook: A Critical Content Analysis and Implications for Students’ Reasoning  [PDF]
Flávio S. Azevedo, Michele J. Mann
Creative Education (CE) , 2019, DOI: 10.4236/ce.2019.101001
Abstract: We report on a case study of the?mathematical?content of a 10th?grade?social studies?textbook. We develop our case in three analytical steps. First, we identify, describe, and categorize the full range of mathematics in the book. Put simply, we ask: What mathematical forms (e.g., Cartesian graphs and problems) do we find and what kinds of mathematical work do they require? Second, we characterize and critically evaluate the mathematics content in the textbook, focusing in particular on the kinds of mathematics literacy and student reasoning that the book fosters. Third and finally, we operationalize a measure of the “density” of mathematics in the textbook—that is, an estimate of the presence and pervasiveness of mathematical objects and practices relative to other disciplinary contentsand track how such “density” has changed over the past three editions of the same volume. Doing so helps us further contextualize and elaborate the prior analyses, but also surfaces shifts in the patterns of mathematics presence in that textbook series, including the growing encroachment of mathematics exercising and visual/representational presence.
Diuretics: again the first step in the treatment of most patients with hypertension
Flávio Fuchs
Trials , 2001, DOI: 10.1186/cvm-2-5-244
Abstract: The stepped care approach for the management of hypertension was introduced in the first United States National Guidelines issued by the National High Blood Pressure Education Program [1]. Diuretics were indicated as the first step, based on their efficacy in the first trials of prevention of cardiovascular disease and because of their better tolerability compared to the other antihypertensive drugs that were available at that time, such as the ganglion blocking agents, guanethidine, hydralazine, and reserpine. These other antihypertensive drugs were recommended as second and third steps for patients who were not controlled by diuretics alone.In the report by the Joint National Committee on Detection, Evaluation, and Treatment of High Blood Pressure (JNC) in 1984 (JNC-III) [2], the first recommended step was extended to include β-blockers. Four years later, in the JNC-IV report, the recommendations were extended further to include four classes of blood-pressure-lowering drugs [3]. In the subsequent guidelines, the Committee returned to diuretics or β-blockers as the first antihypertensive option, but, because of the "compelling indications", the recommendations were extended to include a wide range of the other classes of blood-pressure-lowering drugs [4].The introduction of newer classes of antihypertensive drugs was based on their presumed better tolerance and on the expectation that they would improve the prevention of coronary heart disease, which was lower than expected in the first trials, mainly attributed to adverse metabolic effects of diuretics. Physicians around the world became convinced of these advantages and the use of the newer classes of drugs surpassed diuretics and β-blockers for antihypertensive treatment.The results of recent trials and reanalysis of the previous ones show that we should return to older practices. Two recent reviews of these trials have reached opposite conclusions. Pahor et al., showed that the calcium-channel blockers are infe
Proleg?menos dostoievskianos para uma reaproxima??o entre a polifonia de Mikhail Bakhtin e a dialética
Vassoler, Flávio Ricardo;
Bakhtiniana: Revista de Estudos do Discurso , 2011, DOI: 10.1590/S2176-45732011000200005
Abstract: bakhtin analyzed dostoevsky's poetics not by a partial synthesis in terms of the speech of the writer or one of his characters, but through the dialogue that would leave its contingency to assume a structural role. however, bakhtin could not demonstrate how dostoevsky's work would constitute an integral polyphonic totality. with the contribution from the critical theory, we will try to reapproach bakhtin's polyphony to the contradictory notion of totality through the dialectical method.
Da crian?a-cidad? ao fim da infancia
Brayner, Flávio;
Educa??o & Sociedade , 2001, DOI: 10.1590/S0101-73302001000300011
Abstract: this paper discusses the experience of erased frontiers between public and private spaces, on the one hand, and between adults and children, on the other, which encompasses decisive, if not catastrophic consequences on the permanence of a common world and its transmissibility. the relationship between school and citizenship comes as the unifying thread in this discussion whose main argument denies the existence of the so-called "student-citizen". finally, it brings forward a brief note on a (conservative) democratic school.
A cultura da performatividade e a avalia??o da Pós-Gradua??o em Educa??o no Brasil
Moreira, Antonio Flávio;
Educa??o em Revista , 2009, DOI: 10.1590/S0102-46982009000300003
Abstract: the article focuses on the conditions in which research in higher education is carried out in brazil, at the level of post graduate studies in our universities. the main concern is the assessment process of the post graduate courses supervised by capes. after a brief presentation of the emergence and recent evolution of the country's post graduate studies in education, principles, procedures and effects of the evaluative process are related to a culture of performativity, as conceived by the british researcher stephen ball. it is argued that such category is helpful to the analysis of capes evaluation. in the final comments, the environment of post graduate courses, characterized by a culture of performativity, is compared to the way teachers have been reacting to and experiencing recent curricular reforms, according to ivor goodon's recent research. possible alternatives are then sought of.
A demografia atlantica dos africanos no Rio de Janeiro, séculos XVII, XVIII e XIX: algumas configura??es a partir dos registros eclesiásticos
Gomes, Flávio;
História, Ciências, Saúde-Manguinhos , 2012, DOI: 10.1590/S0104-59702012000500006
Abstract: the article presents serial data on african atlantic demographics in rio de janeiro in the seventeenth, eighteenth, and early decades of the nineteenth century, highlighting parish death, marriage, and baptismal registers. these represent partial, local findings from a broader demographic study underway on various urban and rural regions of slaveholding brazil, based on a variety of historical registers, which are used in an analysis of sociodemographic patterns (age, occupation, kinship, disease, gender, price) and variations in african ethnonyms from 1650 through 1870.
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