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OALib Journal期刊

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Electron microscopy of glial cells of the central nervous system in the crab Ucides cordatus
Allodi, S.;Taffarel, M.;
Brazilian Journal of Medical and Biological Research , 1999, DOI: 10.1590/S0100-879X1999000300013
Abstract: invertebrate glial cells show a variety of morphologies depending on species and location. they have been classified according to relatively general morphological or functional criteria and also to their location. the present study was carried out to characterize the organization of glial cells and their processes in the zona fasciculata and in the protocerebral tract of the crab ucides cordatus. we performed routine and cytochemical procedures for electron microscopy analysis. semithin sections were observed at the light microscope. the thiéry procedure indicated the presence of carbohydrates, particularly glycogen, in tissue and in cells. to better visualize the axonal ensheathment at the ultrastructural level, we employed a method to enhance the unsaturated fatty acids present in membranes. our results showed that there are at least two types of glial cells in these nervous structures, a light one and a dark one. most of the dark cell processes have been mentioned in the literature as extracellular matrix, but since they presented an enveloping membrane, glycogen and mitochondria - intact and with different degrees of disruption - they were considered to be glial cells in the present study. we assume that they correspond to the perineurial cells on the basis of their location. the light cells must correspond to the periaxonal cells. some characteristics of the axons such as their organization, ensheathment and subcellular structures are also described.
Desporto Educaional: realidade e possibilidades das políticas governamentais e das práticas pedagógicas nas escolas públicas
Celi Nelza Zulke Taffarel
Movimento , 2000,
Abstract: Analise critica do desporto educacional considerando as políticas públicas e as práticas pedagógicas dos professores.
Electron microscopy of glial cells of the central nervous system in the crab Ucides cordatus
Allodi S.,Taffarel M.
Brazilian Journal of Medical and Biological Research , 1999,
Abstract: Invertebrate glial cells show a variety of morphologies depending on species and location. They have been classified according to relatively general morphological or functional criteria and also to their location. The present study was carried out to characterize the organization of glial cells and their processes in the zona fasciculata and in the protocerebral tract of the crab Ucides cordatus. We performed routine and cytochemical procedures for electron microscopy analysis. Semithin sections were observed at the light microscope. The Thiéry procedure indicated the presence of carbohydrates, particularly glycogen, in tissue and in cells. To better visualize the axonal ensheathment at the ultrastructural level, we employed a method to enhance the unsaturated fatty acids present in membranes. Our results showed that there are at least two types of glial cells in these nervous structures, a light one and a dark one. Most of the dark cell processes have been mentioned in the literature as extracellular matrix, but since they presented an enveloping membrane, glycogen and mitochondria - intact and with different degrees of disruption - they were considered to be glial cells in the present study. We assume that they correspond to the perineurial cells on the basis of their location. The light cells must correspond to the periaxonal cells. Some characteristics of the axons such as their organization, ensheathment and subcellular structures are also described.
Acupuntura e analgesia: aplica??es clínicas e principais acupontos
Taffarel, Marilda Onghero;Freitas, Patricia Maria Coletto;
Ciência Rural , 2009, DOI: 10.1590/S0103-84782009000900047
Abstract: pain is a protective response of the body to harmful stimulus, which results in undesirable effects if not controlled. analgesia can be achieved with the use of different types of drugs. however, these drugs can cause adverse effects according to species and patient physical condition. acupuncture has been proved to be an effective analgesic adjuvant, by the capacity to decrease the amount of drug used for pain control, rarely contra-indicated. the aim of this paper was to review the physiological effects of acupuncture on pain mechanisms, and demonstrate the main acupoints used for animal analgesia. the search was done in electronic search database using key words, in 2008.
O impacto da lei de responsabilidade fiscal sobre a gest o financeira dos pequenos municípios: o caso do Paraná
WILLSON GERIGK,ADEMIR CLEMENTE,MARINêS TAFFAREL
Revista de Educa??o e Pesquisa em Contabilidade , 2010,
Abstract: Este artigo tem por objetivo mensurar e avaliar os reflexos da Lei de Responsabilidade Fiscal (LRF) sobre o espa o de manobra da gest o financeira dos pequenos municípios paranaenses com popula o entre 10 e 20 mil habitantes, tendo como referência as peculiaridades e atribui es dos governos locais. A fundamenta o teórica compreende os conceitos relacionados à organiza o do setor público brasileiro, LRF, administra o pública gerencial, gest o municipal e, especificamente, à gest o financeira municipal. A pesquisa é caracterizada do ponto de vista metodológico como descritiva e explicativa quanto aos objetivos; bibliográfica e documental quanto aos procedimentos; e quantitativa quanto à abordagem do problema. S o analisados os municípios paranaenses com popula o entre 10 e 20 mil habitantes que disponibilizaram informa es na base de dados Finan as do Brasil, da Secretaria do Tesouro Nacional (Finbra). A técnica estatística empregada é a regress o linear múltipla. Nas análises de regress o, foram incluídas 22 variáveis explicativas, envolvendo aspectos financeiros e de gest o dos municípios. Conclui-se que o espa o de manobra dos pequenos municípios paranaenses n o foi reduzido pela LRF como era esperado e, sim, aumentado tanto em termos absolutos como em termos relativos, o que evidência significativa melhoria da gest o financeira. Além disso, as análises de regress o e as análises complementares envolvendo o coeficiente de espa o de manobra sobre as despesas correntes mostram significativa mudan a estrutural como decorrência da LRF.
Sadia S. A. e Perdig o S. A.: análise da trajetória histórica e do desempenho que antecederam o seu processo de fus o [doi: 10.5329/RECADM.20090801005]
Marines Taffarel,Paulo Mello Garcias,Willson Gerigk
Revista Eletr?nica de Ciência Administrativa - RECADM , 2009, DOI: 10.5329/80
Abstract:
O impacto da lei de responsabilidade fiscal sobre a gest o financeira municipal: um estudo com os municípios do Paraná [doi: 10.5329/RECADM.20111001005]
Willson Gerigk,Ademir Clemente,Marinês Taffarel
Revista Eletr?nica de Ciência Administrativa - RECADM , 2011, DOI: 10.5329/706
Abstract: O IMPACTO DA RESUMO Este artigo tem por objetivo mensurar e avaliar os reflexos da Lei de Responsabilidade Fiscal (LRF) sobre o espa o de manobra da gest o financeira dos municípios paranaenses extremamente pequenos e dos pequenos. A pesquisa é caracterizada como descritiva e explicativa quanto aos objetivos; bibliográfica e documental quanto aos procedimentos; e quantitativa quanto à abordagem do problema. O universo da pesquisa s o os municípios paranaenses com popula o menores que 5 mil habitantes e os com popula o entre 10 e 20 mil habitantes; a amostra e composta pelos municípios que disponibilizaram informa es junto à base de dados Finan as do Brasil -FINBRA/STN. A técnica estatística empregada é a regress o linear múltipla. Nas análises de regress o foram usadas 22 variáveis explicativas, envolvendo aspectos financeiros e de gest o dos municípios. Conclui-se que o espa o de manobra da gest o financeira tanto nos municípios paranaenses extremamente pequenos como nos pequenos, n o foi reduzido pela LRF, como era esperado; e que os aspectos que mais contribuem para com o espa o de manobra municipal, nos municípios extremamente pequenos est o associados aos gastos com pessoal, e nos pequenos dizem respeito à diferen a entre as receitas e as despesas correntes. Palavras-chave Finan as públicas. Gest o financeira municipal. Administra o municipal. ABSTRACT This article seeks to quantify and assess the repercussions of the Law of Fiscal Responsibility (LRF) on the operating space of the financial management of municipalities of Paraná extremely small and small. The research is characterized as descriptive and explanatory as to the objectives, literature and documents about the procedures, and on the quantitative approach to the problem. The research is the municipal districts with population less than 5000 inhabitants and those with population between 10 and 20 000 inhabitants, and the sample consists of the municipalities which have provided information to the database Finance of Brazil - FINBRA/STN. The statistical technique used is multiple linear regression. In the regression analysis were used 22 explanatory variables, including aspects and financial management of municipalities. We conclude that the leeway for financial management in both the extremely small municipalities of Paraná and in the small, was not reduced by the LRF, as expected, and that the aspects that contribute most to the leeway with municipal municipalities in extremely small are related to personnel expenses, and small refer to the difference between revenue and current expe
Styrene photocatalytic degradation reaction kinetics
Taffarel, Silvio R.;Lansarin, Marla A.;Moro, Celso C.;
Journal of the Brazilian Chemical Society , 2011, DOI: 10.1590/S0103-50532011001000007
Abstract: the aqueous styrene photocatalytic degradation reaction was evaluated using tio2 p-25 (degussa) as a catalyst. these experiments were accomplished in a batch slurry reactor with temperature control and a uv lamp. the effects of the initial styrene concentration, the catalyst concentration, the hydrogen peroxide addition and the initial ph of the solution on the reaction were evaluated. the experimental results showed that in 90 min, 95% of the initial styrene was degraded by photocatalysis. it was verified that the styrene degradation rate fits a pseudo-first-order kinetics for initial styrene concentrations between 15.27 and 57.25 ppm, at 30oc. the chromatographic analysis of the samples collected during the photocatalytic degradation revealed benzaldehyde as one of the intermediates. the addition of h2o2 accelerated the degradation reaction until the system reached a certain optimum peroxide concentration in the reactor. further h2o2 additions resulted in a reaction rate reduction.
Una técnica alternativa para el cariotipado mitótico en saltamontes: bandeo C y Fluorescente en Adimantus ornatissimus (Orthoptera: Acrididae)
Castillo,Elio R; Taffarel,Alberto; Martí,Dardo A;
Revista de ciencia y tecnolog?-a , 2011,
Abstract: orthopterans are a preferred material for cytogenetic studies because of their large chromosome size and low diploid number; however a difficulty is to maximize a high quality mitotic chromosomes obtention and the choice of an easy and reproducible protocol. different procedures and tissues were used to optimize mitotic chromosome observation with conventional staining, preserving, as much as possible chromosome morphology, and minimizing the non-chromosomal background material. grasshopper mitotic metaphases preparations are usually obtained from squashed female gastric caeca and posterior exposure of slides to dry ice, co2 flow, or liquid nitrogen to remove coverslips. grasshopper embryos are also used for cytological analyses. as a reference cytological material, we analyzed adimantus ornatissimus (burmeister 1838) chromosomes. this specie showed 2n=23/24 / and a x0/xx sex chromosome system. we describe the frotis technique which optimizes the visualization and characterization of mitotic chromosome morphology and facilitates differential staining procedures.
Virus sincicial respiratorio y adenovirus: Un estudio clínico comparativo en pacientes internados y sin factores de riesgo
Ba?o,Gabriel A.; Di Lalla,Sandra E.; Taffarel,Pedro; Valeri,Clara;
Archivos argentinos de pediatr?-a , 2006,
Abstract: acute respiratory infections are the most frequent respiratory diseases in children. the most frequently etiological agents associated with acute lower tract infections are the respiratory syncytial virus (60%), adenovirus (8%) and parainfluenza virus (3%). adenovirus has the worst evolution, with a mortality rate of up to 10% versus 2% with respiratory syncytial virus infections. objective. to compare the clinical outcome of patients with viral isolations from nasopharyngeal secretions positive for respiratory syncytial virus and adenovirus. population, material and methods. retrospective, analytical and transversal study in which clinical histories from patients admitted to the hospital general de ni?os "dr. pedro de elizalde" between january and december 2003 with viral isolations from nasopharyngeal secretions positive for respiratory syncytial virus and adenovirus and without pathological history were analyzed. nasopharyngeal secretions were evaluated by indirect immunofluorescent assay. variables included in the study were respiratory syncytial virus and adenovirus, length of hospitalization, oxygen requirement in days, requirement of mechanical ventilation, death, age and sex. results. 27.5% of the patients had a positive viral identification for adenovirus, and 72.5% for respiratory syncytial virus. there were no differences for any of the analyzed variables. conclusions. there were no difference between the clinical outcomes of patients with viral identifications from nasopharyngeal secretions positive for respiratory syncytial virus and adenovirus.
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