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Search Results: 1 - 10 of 6679 matches for " Fernanda Zucki "
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Correlation analysis of the long latency auditory evoked potential N2 and cognitive P3 with the level of lead poisoning in children
Alvarenga, Kátia de Freitas,Bernardez-Braga, Gabriela Rosito Alvarez,Zucki, Fernanda,Duarte, Josilene Luciene
International Archives of Otorhinolaryngology , 2013,
Abstract: Introduction: The effects of lead on children's health have been widely studied. Aim: To analyze the correlation between the long latency auditory evoked potential N2 and cognitive P3 with the level of lead poisoning in Brazilian children. Methods: This retrospective study evaluated 20 children ranging in age from 7 to 14 years at the time of audiological and electrophysiological evaluations. We performed periodic surveys of the lead concentration in the blood and basic audiological evaluations. Furthermore, we studied the auditory evoked potential long latency N2 and cognitive P3 by analyzing the absolute latency of the N2 and P3 potentials and the P3 amplitude recorded at Cz. At the time of audiological and electrophysiological evaluations, the average concentration of lead in the blood was less than 10 ug/dL. Results: In conventional audiologic evaluations, all children had hearing thresholds below 20 dBHL for the frequencies tested and normal tympanometry findings; the auditory evoked potential long latency N2 and cognitive P3 were present in 95% of children. No significant correlations were found between the blood lead concentration and latency (p = 0.821) or amplitude (p = 0.411) of the P3 potential. However, the latency of the N2 potential increased with the concentration of lead in the blood, with a significant correlation (p = 0.030). Conclusion: Among Brazilian children with low lead exposure, a significant correlation was found between blood lead levels and the average latency of the auditory evoked potential long latency N2; however, a significant correlation was not observed for the amplitude and latency of the cognitive potential P3.
Avalia o audiológica em crian as com baixo nível de exposi o cumulativa ao chumbo Audiological evaluation in children with low level of cumulative lead exposure
Kátia de Freitas Alvarenga,Daniela de Oliveira Manoel,Fernanda Zucki,Lilian Cássia Bórnia Jacob-Corteletti
Revista CEFAC , 2012, DOI: 10.1590/s1516-18462012005000096
Abstract: OBJETIVO: verificar a ocorrência de perda auditiva sensorioneural em crian as com baixo nível de exposi o cumulativa ao chumbo. MéTODO: 156 crian as intoxicadas por chumbo, 94 do sexo masculino e 62 do sexo feminino, na faixa etária entre 18 meses a 14 anos e 5 meses, foram submetidas a análise longitudinal do nível de Plumbemia em sangue, bem como audiometria tonal liminar e emiss es otoacústicas evocadas por estímulo transiente. RESULTADOS: a popula o pesquisada apresentou um valor médio de Plumbemia estimada de 12,2±5,7mg/dL (faixa entre 2,4-33mg/dL); todas as crian as apresentaram resposta normal na audiometria tonal liminar em 20 dBNA nas frequências testadas, 0,5; 1; 2 e 4 kHz, para ambas as orelhas; as emiss es otoacústicas evocadas por estímulo transiente estiveram presentes para todas as frequências bilateralmente, nas 79 crian as pesquisadas. CONCLUS O: n o foi constatada perda auditiva sensorioneural em crian as com histórico de baixo nível de exposi o cumulativa por chumbo, assim como n o foi encontrada les o de células ciliadas externas na cóclea, mesmo que subclínicas. PURPOSE: to verify the occurrence of sensorineural hearing loss in children with low level of cumulative lead exposure. METHOD: 156 lead-poisoned children, 94 males and 62 females, ranging in age from 18 months old to 14 years and 5 months old were subjected to analysis of longitudinal lead level in blood as well as pure tone audiometry and transient evoked otoacoustic emissions. RESULTS: the population studied had a mean estimated blood lead level of 12,2±5,7mg/dL (range between 2,4 and 33mg/dL); all children had a normal response in pure tone audiometry at 20 dBHL in the frequencies tested, 0.5, 1, 2 and 4 kHz, in both ears; the transient evoked otoacoustic emissions were presented for all frequencies bilaterally in 79 children surveyed. CONCLUSION: there has been no hearing loss in children with a history of low cumulative lead exposure, as there was no injury of cochlear outer hair cells, even if subclinical.
Correlation analysis of the long latency auditory evoked potential N2 and cognitive P3 with the level of lead poisoning in children
Alvarenga, Kátia de Freitas;Bernardez-Braga, Gabriela Rosito Alvarez;Zucki, Fernanda;Duarte, Josilene Luciene;Lopes, Andrea Cintra;Feniman, Mariza Ribeiro;
International Archives of Otorhinolaryngology , 2013, DOI: 10.7162/S1809-97772013000100007
Abstract: introduction: the effects of lead on children's health have been widely studied. aim: to analyze the correlation between the long latency auditory evoked potential n2 and cognitive p3 with the level of lead poisoning in brazilian children. methods: this retrospective study evaluated 20 children ranging in age from 7 to 14 years at the time of audiological and electrophysiological evaluations. we performed periodic surveys of the lead concentration in the blood and basic audiological evaluations. furthermore, we studied the auditory evoked potential long latency n2 and cognitive p3 by analyzing the absolute latency of the n2 and p3 potentials and the p3 amplitude recorded at cz. at the time of audiological and electrophysiological evaluations, the average concentration of lead in the blood was less than 10 ug/dl. results: in conventional audiologic evaluations, all children had hearing thresholds below 20 dbhl for the frequencies tested and normal tympanometry findings; the auditory evoked potential long latency n2 and cognitive p3 were present in 95% of children. no significant correlations were found between the blood lead concentration and latency (p = 0.821) or amplitude (p = 0.411) of the p3 potential. however, the latency of the n2 potential increased with the concentration of lead in the blood, with a significant correlation (p = 0.030). conclusion: among brazilian children with low lead exposure, a significant correlation was found between blood lead levels and the average latency of the auditory evoked potential long latency n2; however, a significant correlation was not observed for the amplitude and latency of the cognitive potential p3.
Hearing loss and acquired immune deficiency syndrome: systematic review
Araújo, Eliene da Silva;Zucki, Fernanda;Corteletti, Lilian Cássia Bórnia Jacob;Lopes, Andrea Cintra;Feniman, Mariza Ribeiro;Alvarenga, Kátia de Freitas;
Jornal da Sociedade Brasileira de Fonoaudiologia , 2012, DOI: 10.1590/S2179-64912012000200017
Abstract: purpose: to investigate the occurrence of hearing loss in individuals with hiv/aids and their characterization regarding type and degree. research strategy: it was conducted a systematic review of the literature found on the electronic databases pubmed, embase, adolec, ibecs, web of science, scopus, lilacs and scielo. selection criteria: the search strategy was directed by a specific question: "is hearing loss part of the framework of hiv/aids manifestations?", and the selection criteria of the studies involved coherence with the proposed theme, evidence levels 1, 2 or 3, and language (portuguese, english and spanish). data analysis: we found 698 studies. after an analysis of the title and abstract, 91 were selected for full reading. out of these, 38 met the proposed criteria and were included on the review. results: the studies reported presence of conductive, sensorineural, and mixed hearing loss, of variable degrees and audiometric configurations, in addition to tinnitus and vestibular disorders. the etiology can be attributed to opportunistic infections, ototoxic drugs or to the action of virus itself. the auditory evoked potentials have been used as markers of neurological alterations, even in patients with normal hearing. conclusion: hiv/aids patients may present hearing loss. thus, programs for prevention and treatment of aids must involve actions aimed at auditory health.
Use of SFC in Extraction of Adaptogens from Brazilian Plants  [PDF]
Marcelle Fernanda Carulo
American Journal of Analytical Chemistry (AJAC) , 2012, DOI: 10.4236/ajac.2012.312A129
Abstract:

Bioactive substances found in plants are very interesting because of their importance in medicine and foods. Species of Pfaffia genre is common in Brazil, the largest center of collection of this species. Statistics report that 11,000 tons of roots and other plants were exported in 2011. Due to the large market demand, a growth of 10% per year is estimated. One of the promising areas of study involves the supercritical fluid extraction of active compounds present in plants. The current goal is to reduce dependence on foreign markets. The extraction of bioactive compound known as Beta-Ecdysone has been studied. Statistics show that profits of exports coming from the raw material is almost ten times smaller than the extract itself. Considering this fact, we emphasize the importance of an alternative method of industrial extraction in Brazil using supercritical technology, which proves to be environmentally safe.

Adaptation and Validation of a Proteolytic Activity Methodology Using Dye-Crosslinked Substrate Tablets  [PDF]
Fernanda Martins, Elaine C. Ramires
Advances in Enzyme Research (AER) , 2014, DOI: 10.4236/aer.2014.23012
Abstract: Enzymatic activities are important to be quantified in products as enzymatic cleaners, which are used in medical and surgical devices reprocessing. Enzymatic activities are critical for the proper chemical cleaning that intends to remove solid organic dirt from inaccessible sites. The most important enzyme for this purpose is the protease, which is able to dissolve the main dirt attached to medical and surgical instruments. In this context, this study contributes to the development of a new proteolytic activity quantification method and its validation. The methodology is based on colorimetry and uses a UV-Vis spectrophotometer to measure the substrate hydrolysis by the blue color intensity, employing Protazyme AK tablets as substrate.
La privatización de YPF en Comodoro Rivadavia: Algunas características y consecuencias sociales y laborales
Torres,Fernanda;
Trabajo y sociedad , 2012,
Abstract: the objective of this article is to analyze the process of privatization of the company ypf in the san jorge gulf, more specifically in the comodoro rivadavia area, province of chubut. i am interested in studying the social consequences of this privatization in terms of the labour market, but also paying attention to the cultural, social, and political aspects that were also altered. first, i will present a brief description and analysis of the characteristics of the oil company's privatization, and of the peculiar production conditions it had in the patagonian region. then, i will stop on the different labor strategies which originated after the sale of the company, which are related to proposals of labor rehabilitation or of reconfiguration of the labor market structure, and on their results. finally, i am interested in introducing the topic of the "indirect" consequences of the reconfiguration of the main economic company of the region, i.e. the redefinition of the main variables of the social, political, cultural, and economical life of the area. i am particularly interested in analyzing whether a change in the concept of "work" can be observed, and also the territorial displacements which occurred in the city of comodoro and its area of influence. this analysis will be carried through the study of an unemployed people's movement of the region: "coordinadora de trabajadores desocupados - anibal verón."
Performatividad, liminalidad y politicidad en la práctica teatral del colectivo La Patogallina
Carvajal,Fernanda;
Aisthesis , 2009, DOI: 10.4067/S0718-71812009000100005
Abstract: lhe following essay tries to analyze and contextualize the exhibition of the play el húsar de la muerte, carried out by the artistic collective la patogallina at the government house of chile, la moneda, in the framework of the inauguration of the vii international festival lheater (filam) in 2001. in order to carry out the analysis, we propose the categories of liminality, performativity and politicity which allow conceiving this episode not from conventional theatrical structures, but from a transdisciplinary point of view. lhese categories plus the ideological, aesthetic and organizational backgrounds of the collective will allow us to understand the bursting of la patogallina in la moneda as an event which was marked by the conflicts with the augusto pinochet trial. lhis can be read as a fracture in the festivity/cultural space and the normative consensus that articulated the ?politics of aperture? from la moneda to all citizens.
ADRIANA PINDA Y EL HABLA ESCRITA DE LA AJENIDAD: RELáMPAGO
Moraga,Fernanda;
Alpha (Osorno) , 2006, DOI: 10.4067/S0718-22012006000200007
Abstract: this paper explores from a theoretical and interpretative perspective, the poem “relámpago”, published in ralum, by the mapuche-huilliche (and chilean) poet adriana paredes pinda (osorno, 1970). this reading (about this particular poetic discourse) intends to identify problematical poetic folds where the subject-woman-mestiza is constructed, from an in-between cultures of the body, and a borderland experience of the poet’s own existence. therefore,, from a historical perspective, the indigenous cultural experience is viewed here in permanent conflict with the ethnocentric chilean western history. according to this, it is necessary to consider the cultural context of production of paredes’ text, and also the function of the poet as an empiric sender. in the poem, she is part of the “performance” (a reflexive process) to a “para sí”, defining herself -the poet and her mestiza-bordeland body-, as a multiple protagonist and ideal reader of the text. from this integrative focus, we study the text from an articulating dialogue in relation to specific theoretical spaces
Narrativa de Abilio Estévez: hacia una estética de la sujeción-expolición
Bustamante,Fernanda;
Aisthesis , 2010, DOI: 10.4067/S0718-71812010000100015
Abstract: this article is intended to make a critical approach to the narrative of abilio estévez, an exiled cuban writer. to that effect, i will begin with the identification and questioning of his aesthetic procedures: in terms of rhetoric (semantic field, metaphor, allegory) and structure (intertextuality, polyphony, marginal notes, paratext, metaliterary). it is possible to observe how his literary project is able to articulate subjetion-commoratio aesthetics. in this context, cuba (la habana) is presented as the writer's material and the "totalizing narrator" as its canvas.
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