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Search Results: 1 - 10 of 19416 matches for " RAMB;Ferreira "
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The first reported case of human tick paralysis in Brazil: a new induction pattern by immature stages
Almeida, RAMB;Ferreira, MA;Barraviera, B;Haddad Jr, V;
Journal of Venomous Animals and Toxins including Tropical Diseases , 2012, DOI: 10.1590/S1678-91992012000400017
Abstract: tick paralysis (tp) is a rare disease with rapid progression and potential fatal evolution. immediately after the diagnosis, removal of all ticks from the body of the patient is mandatory. the present study reports for the first time a human case of the disease in brazil. the patient had loss of muscle strength, decreased reflexes and marked palpebral ptosis. six hours after removal of the last tick, the ptosis improved and on the following day, the patient had near total regression of the symptoms. this report emphasizes the possible presence of similar cases that should be promptly diagnosed and quickly treated. a new induction pattern for tp in humans associated with immature stages of ticks is also presented.
Envenomation caused by Latrodectus geometricus in S?o Paulo state, Brazil: a case report
Almeida, Ramb;Ferreira Junior, RS;Chaves, CR;Barraviera, B;
Journal of Venomous Animals and Toxins including Tropical Diseases , 2009, DOI: 10.1590/S1678-91992009000300016
Abstract: widow spiders (latrodectus spp.), also known as "black widows", have a worldwide distribution and can cause latrodectism. to the best of our knowledge, in brazil, only one case of latrodectus geometricus (koch, 1841) envenomation in a human has been reported. the aim of the present report is to describe a spider bite caused by latrodectus geometricus in a patient who lives in paranapanema, s?o paulo state, brazil.
Assessment of cytokine values in serum by RT-PCR in HIV-1 infected individuals with and without highly active anti-retroviral therapy (HAART)
Meira, DA;Almeida, RAMB;Barbosa, AN;de Souza, LR;Olivo, TET;Henriques, RMS;Golim, MA;Araújo Jr, JP;Nagoshi, LR;Orikaza, CM;Calvi, SA;
Journal of Venomous Animals and Toxins including Tropical Diseases , 2008, DOI: 10.1590/S1678-91992008000400011
Abstract: a cross-sectional study was performed on hiv-1 infected individuals with or without antiretroviral treatment (arv) in the aids day hospital, botucatu medical school, unesp. between august 2004 and october 2005, 73 hiv-1 infected individuals were divided into three groups: infected individuals with or without aids who had never received arv (g1 = 15); patients on haart that had had plasma hiv-1 rna viral load (vl) equal to or greater than 50 copies/ml (g2 = 27); and patients on haart with undetectable vl for at least the past six months (g3 = 31). there was also an additional group that comprised blood donors without any sign of the disease and with negative hiv serum tests (g4 = 20), which was the control group. serum cytokine levels (values in pg/ml) were measured by enzyme-linked immunosorbent assay (elisa) and specific mrna expression by reverse transcription polymerase chain reaction (rt-pcr). both techniques were performed on the four groups for tnf-α, il-2, inf-γ, il-4 and il-10. all patients were submitted to vl determination and cd4+ and cd8+t lymphocyte counts. the analysis of the results revealed a significant comparison among groups for both methods and an association between the latter (> 80% r2 > 0.80). there was only one exception, in control individuals for il-2 by elisa. the cytokine profiles, in both methods, for the three patient groups, were mature th-0. the behaviors of il-2 and inf-γ required emphasis due to consequent expression of dominant th profile. both methods showed low il-2 and high mean values of inf-γ in the three groups. several authors have recently drawn attention to the substantial apoptosis of infected and non-infected cd4+t cells, mainly during primary infection, persisting only in those with inf-γ phenotype producer and not il-2. hiv infected individuals submitted to haart are expected to produce il-2 in an attempt to present th-1 profile, but in most cases this did not occur.
Manufacturing Cells Formation Based on Graph Coloring  [PDF]
José Francisco Ferreira Ribeiro
Journal of Service Science and Management (JSSM) , 2010, DOI: 10.4236/jssm.2010.34056
Abstract: A method for cellular manufacturing design in Group Technology is presented in this paper. The proposed method computes the dissimilarities between parts and organizes the production system in part-families and group-machines. A graph corresponding to the production system is generated and a coloring algorithm is activated in order to obtain a number of cells equal to the desired number of cells. The corresponding program was written in Matlab language and runs on a microcomputer. The results obtained on several examples found in the literature are consistently equivalent to or even better than those hitherto proposed, in terms of inter-cell moves and dimensions of the cells.
Distance Learning and Administrators Training in Basic Education: The Importance, Principles and Meanings in Contemporaneity  [PDF]
Naura Syria Carapeto Ferreira
Open Journal of Social Sciences (JSS) , 2015, DOI: 10.4236/jss.2015.32003

This article addresses three fundamental elements in contemporaneity for Brazilians and worldwide people: The Distance Learning, the Administrators Training and the Basic Education. It is necessary to understand them within the relation that links them and demonstrates responsibility from the principles and meanings committed with citizen human formation of all the Brazilian and worldwide population. Therefore, I will point at re-signifying those elements in this relation, opening ways to purposeful ideas.

Classroom Analysis of a Packed Bed Reactor with and without the Use of Effectiveness Factor  [PDF]
Sebastiao R. Ferreira
Creative Education (CE) , 2016, DOI: 10.4236/ce.2016.715209
Abstract: Classroom analysis of a packed bed reactor with and without the use of effectiveness factor (η) is discussed in this article. The use of (η) in the calculation of an isothermal packed bed reactor with convection and first-order reaction rate is analyzed. An analytical model has been developed with and without (η). The model without (η) was presented in a 50-min lecture and later used in a 50-min computational laboratory session with various groups of two students to calculate the length and catalyst mass in a packed bed reactor. In another class, the students calculated the model using (η). Four or five class activities were tested every month in pairs of students in the place of traditional exams. A questionnaire was prepared to verify the students’ level of difficulty in understanding two theoretical topics taught in the last two classes, difficulty in doing the requested calculations, as well as among calculations using the effectiveness factor and without it. We have included a question in the questionnaire on how the students felt about the elimination of one traditional monthly exam in Chemical Reactor Design. In the two semesters when the questionnaire was applied to the Chemical Reactor Design class, on average, 86% of the students preferred various class group activities as opposed to traditional exams, 80% of the students reported that they had little difficulty in understanding the two theoretical sections in the last two classes, 57% stated that they did not have any difficulty in doing the requested calculations and 51% reported that the calculation methods with the use of (η) and without its use were somewhat similar.
The Pattern of Prime Numbers  [PDF]
José William Porras Ferreira
Applied Mathematics (AM) , 2017, DOI: 10.4236/am.2017.82015
Abstract: The prime numbers P≥5 obey a pattern that can be described by two forms or geometric progressions \"\" or \"\" that facilitates obtaining them sequentially, being possible also to calculate the quantity of primes that are in the geometric progressions \"\" as it is described in this document.
Love as Attunement  [PDF]
Acylene Maria Cabral Ferreira
Open Journal of Philosophy (OJPP) , 2018, DOI: 10.4236/ojpp.2018.82008
Abstract: We aim to show, using Being and Time and Zollikon Seminars, that solicitude (Fürsorge) as the disclosedness of being-with is the condition of possibility for the existential-ontological constitution of the attunement of love. Centered on the text On the Essence of Truth, our purpose is to emphasize that freedom is also an attunement. Our hypothesis is that the copertinence of love (the fundamental disclosedness to the other) and of freedom (the letting-be of the other) consists in a modification of the existential of disposedness (Befindlichkeit) and expresses the unity and ontological circularity of being-in-the-world.
Utiliza??o do SF-6D na medi??o das preferências dos portugueses: sistema de valores e normas da popula??o dos 18 aos 64 anos
Ferreira,Lara; Ferreira,Pedro;
Revista Portuguesa de Saúde Pública , 2011,
Abstract: introduction: there has been an increasing interest in the study of the health state valuations across countries. evidence suggests that health state valuations may differ from country to country. in recent years there has been increasing interest in surveys conducted to obtain value sets for the most used preference-based instruments, such as the eq-5d, the hui and the sf-6d. a portuguese value set for the sf-6d was recently published. however this system weight had some inconsistencies in what concerned the weights of the six dimensions of the sf-6d. the correction of these inconsistencies would improve the value set. this study seeks to present the portuguese system weight for the sf-6d without inconsistencies. it also aims at providing portuguese norms for individuals aged 18-64 for the sf-6d. methods: inconsistencies were found in some levels of the dimensions of the sf-6d. these levels were aggregated and parsimonious models were estimated through generalized estimating equations. the data used to obtain the portuguese norms for individuals aged 18-64 came from a random sample of the portuguese population aged 18-64 (n=2,459). the sf-36v2 was applied to this sample and results from the best parsimonious model were used to obtain the portuguese norms for individuals aged 18-64. results: aggregating levels of each dimension whenever inconsistencies occurred enabled to obtain a portuguese system weight for the sf-6d. however there are still some problems of under prediction in some states assigned to poor health. the mean utility value obtained for the portuguese working age population was 0.81 (associated with a standard deviation of 0.12). portuguese norms for the sf-6d for individuals aged 18-64 were computed by gender, age, marital status and educational level. lower levels of utilities were observed in women, the elderly, individuals with low educational level, widowed and individuals living in rural areas. conclusion: this research demonstrates that it is p
Extremes of scale mixtures of multivariate time series
Helena Ferreira,Marta Ferreira
Mathematics , 2013,
Abstract: Factor models have large potencial in the modeling of several natural and human phenomena. In this paper we consider a multivariate time series $\mb{Y}_n$, ${n\geq 1}$, rescaled through random factors $\mb{T}_n$, ${n\geq 1}$, extending some scale mixture models in the literature. We analyze its extremal behavior by deriving the maximum domain of attraction and the multivariate extremal index, which leads to new ways to construct multivariate extreme value distributions. The computation of the multivariate extremal index and the characterization of the tail dependence show the interesting property of these models that however much it is the dependence within and between factors $\mb{T}_n$, ${n\geq 1}$, the extremal index of the model is unit whenever $\mb{Y}_n$, ${n\geq 1}$, presents cross-sectional and sequencial tail independence. We illustrate with examples of thinned multivariate time series and multivariate autoregressive processes with random coefficients. An application of these latter to financial data is presented at the end.
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