Showing papers by "Universidade de Pernambuco published in 2004"
TL;DR: The ejercicio fisico provoca una serie de respuesta fisiologicas, resultantes de adaptaciones autonomicas y hemodinamicas quevan a influenciar en el sistema cardiovascular as mentioned in this paper.
Abstract: RESUMENEjercicio fisico y el control de la presion arterial El ejercicio fisico provoca una serie de respuesta fisiologicas,resultantes de adaptaciones autonomicas y hemodinamicas quevan a influenciar en el sistema cardiovascular. Diversos estudiosdemonstraron el efecto benefico sobre la presion arterial. Siendoasi, la hipertension arterial sistemica una entidad de alta prevalen-cia y elevada morbi-mortalidad en la poblacion, el ejercicio fisicotiene un papel muy importante como elemento no medicamento-so para su control y como adyuvante al tratamiento farmacologicotambien. INTRODUCAO O exercicio fisico e uma atividade realizada com repeticoes sis-tematicas de movimentos orientados, com consequente aumentono consumo de oxigenio devido a solicitacao muscular, gerando,portanto, trabalho (1) . O exercicio representa um subgrupo de ativi-dade fisica planejada com a finalidade de manter o condicionamen-to (2) . Pode tambem ser definido como qualquer atividade muscularque gere forca e interrompa a homeostase
164 citations
159 citations
135 citations
TL;DR: In-fluencia de la hidrogimnasia: influencia of the in-fluence of the salud de los anosos as mentioned in this paper, verificar el efectode la practica de the HOG sobre the aptitud fisicadel anoso asociada a la salud.
Abstract: RESUMENAptitud fisica relacionada con la salud de los anosos: in-fluencia de la hidrogimnasiaFundamentos y objetivos: La practica del ejercicio fisi-co, ademas de combatir el sedentarismo, contribuye demanera significativa para el mantenimiento de la aptitudfisica. El objetivo de este estudio fue el verificar el efectode la practica de la hidrogimnasia sobre la aptitud fisicadel anoso asociada a la salud. Metodologia: Fue realiza-do un ensayo controlado en 74 mujeres anosas, sin activi-dad fisica regular. Un grupo de 37 mujeres recibio dos cla-ses semanales de hidrogimnasia durante 3 meses y otras37 mujeres sirvieron como control. La aptitud fisica eva-luada a traves de la bateria de tests de Rikli & Jones (1999),con evaluaciones de fuerza y resistencia de miembros infe-riores (levantar y sentar la cadera), fuerza y resistencia demiembros superiores (flexion del antebrazo), flexion demiembros inferiores (sentado, alcanzar los miembros infe-riores con las manos), mobilidad fisica – velocidad, agili-dad y equilibrio (levanta, camina 2,44 m y vuelta a sentar-se), flexibilidad de los miembros superiores (alcanzar atrasde las costas con las manos) e resistencia aerobica (cami-nar 6 minutos). La bateria de tests fue aplicada antes delinicio de las clases y al final del programa despues de los3 meses. Los grupos fueron semejantes en relacion a edad,
129 citations
TL;DR: Fading rates are identified in which the Kth-order Markov model and the GEC model approximate the fading channel with similar accuracy, and the latter model is useful for approximating slowly fading processes, since it provides a more compact parameterization.
Abstract: Stochastic properties of the binary channel that describe the successes and failures of the transmission of a modulated signal over a time-correlated flat-fading channel are considered for investigation. This analysis is employed to develop Kth-order Markov models for such a burst channel. The order of the Markov model that generates accurate analytical models is estimated for a broad range of fading environments. The parameterization and accuracy of an important class of hidden Markov models, known as the Gilbert-Elliott channel (GEC), are also investigated. Fading rates are identified in which the Kth-order Markov model and the GEC model approximate the fading channel with similar accuracy. The latter model is useful for approximating slowly fading processes, since it provides a more compact parameterization.
118 citations
TL;DR: It was concluded that boys from lower social strata attending public schools, presenting an overjet size greater than 5 mm and an inadequate lip coverage, were more likely to have traumatic dental injuries in Recife, Brazil.
Abstract: The aim of this pilot study was to analyse whether overjet, lip coverage and obesity represented risk factors associated with the occurrence of dental trauma in the permanent anterior teeth of schoolchildren in Recife, Brazil. It included a random sample of 116 boys and girls aged 12 years, attending both public and private schools. Data was collected through clinical examinations and interviews. Dental trauma was classified according to Andreasen's criteria (1994). Overjet was considered as risk factor when it presented values higher than 5 mm. Lip coverage was classified as adequate or inadequate, while obesity was considered according to National Center for Health Statistics (NCHS) procedures for the assessment of nutritional status. The prevalence of dental injuries was 23.3%. Boys experienced more injuries than girls, 30 and 16.1%, respectively (P >0.05). There was a statistically significant difference between traumatic dental injuries and overjet (P <0.05) and between traumatic dental injuries and lip coverage (P=0.000). No statistical significant differences were found when obesity and dental trauma were analysed (P <0.05). It was concluded that boys from lower social strata attending public schools, presenting an overjet size greater than 5 mm and an inadequate lip coverage, were more likely to have traumatic dental injuries in Recife, Brazil. Obesity was not a risk factor for dental trauma in this sample.
108 citations
TL;DR: The use of the drain helps to control swelling, however, it had no effect on pain or trismus in impacted lower third molar surgery.
94 citations
TL;DR: In this paper, analise retrospectiva dos dados biologicos, demograficos, clinicos e laboratoriais das criancas internadas no Instituto Materno-Infantil de Pernambuco, em Recife, no periodo compreendido entre 1996 and 2001.
Abstract: OBJETIVO: Descrever as caracteristicas clinico-epidemiologicas, o tratamento e a letalidade das criancas internadas com leishmaniose visceral em um hospital pediatrico de referencia. METODOS: Analise retrospectiva dos dados biologicos, demograficos, clinicos e laboratoriais das criancas internadas no Instituto Materno-Infantil de Pernambuco, em Recife, no periodo compreendido entre 1996 e 2001. RESULTADOS: Foram incluidas 431 criancas, de 4 meses a 13,7 anos de idade, sendo que 50,3% eram do sexo feminino, e 82,5% eram do interior do estado de Pernambuco. Cerca de 70% dos domicilios eram de alvenaria, 70% nao dispunham de agua encanada ou sistema de esgoto sanitario, e o tempo medio de permanencia das maes na escola foi de 3 anos. Esplenomegalia e febre estavam presentes em 97% e 95,6% dos casos, respectivamente, e 44,5% dos pacientes eram subnutridos. Em 47 (10,9%) dos pacientes foi detectada infeccao na admissao. O nivel medio de hemoglobina foi de 6 g/dl, de leucocitos 3.516/mm3 e de plaquetas 118.641/mm3. O tratamento de escolha foi o glucantime (98% dos casos), e em sete pacientes, a anfotericina B foi utilizada. A letalidade foi de 10,2%, sendo que as principais causas imediatas de obito foram atribuidas a infeccoes associadas, hemorragias e insuficiencia hepatica. CONCLUSOES: Os autores destacam as caracteristicas clinicas, epidemiologicas e laboratoriais da leishmaniose visceral em area endemica, alem do diagnostico tardio e alta letalidade, sugerindo a capacitacao de profissionais de saude para o reconhecimento precoce e tratamento adequado da doenca e suas complicacoes.
93 citations
TL;DR: The prevalence of early childhood caries in 12-36-month-old children from poor backgrounds in Recife is in accordance with the rate found in other Brazilian cities and is extremely high compared with that of the world population as a whole.
Abstract: Summary.
Objectives. The purpose of the present study was to evaluate early childhood caries among 12–36-month-old children from families living in poor socio-economic conditions in the city of Recife, Brazil, its association with the type and duration of feeding (e.g. natural, sugared, bottle and glass), as well as the relationship between a supplementary diet and the occurrence of this type of caries.
Methods. The present study consisted of a visual clinical examination of teeth that had been previously cleaned with gauze. This was carried out under natural light in a waiting room. Four calibrated examiners performed the examination and the kappa test value was 8·0. The parents or guardians were interviewed for the following information: name, address, age, type of feeding, number of sugary meals, sugar intake and habitual diet. Some 468 children were included in this study. Their ages ranged from 12 to 36 months. The sample was comprised of 222 (47·4%) males and 246 females (52·6%).
Results. Of the 468 children included in this study, 133 (28·4%) had caries. Only 59 (12·6%) of the children examined had been breast-fed, 20 (33·9%) of whom presented with caries. Three hundred and twenty-seven (69·9%) subjects had been bottle-fed with sugared milk, 86 (26%) of whom had caries. Two hundred and eight children had five or more sugary meals per day, 70 (33·6%) of whom had caries. No statistically significant relationship was seen between breast-feeding and the prevalence of tooth decay.
Conclusions. The results of the present study show that the prevalence of early childhood caries in 12–36-month-old children from poor backgrounds in Recife is in accordance with the rate found in other Brazilian cities and is extremely high compared with that of the world population as a whole. Early childhood caries was not clearly related to the type of feeding in this sample. The prevalence of early childhood caries increased with age, and the number of sugary snacks between meals and a cariogenic diet were strongly related to early childhood caries. The lack of fluoridated water and high rates of early childhood caries in lead the authors to suggest that fluoride dentifrice should be introduced at 12 months of age as a fluoride supplement and an important aid in the prevention of childhood caries. Additional studies in different cultures and societies need to be undertaken before a definitive conclusion can be drawn.
80 citations
TL;DR: Patients treated with antitetanus immunoglobulin by the intrathecal route show better clinical progression than those treated by the intramuscular route.
Abstract: Objective To evaluate the effect of intrathecal therapy with human antitetanus immunoglobulin on clinical progression of and mortality from tetanus. Design Randomised controlled trial. Setting Intensive care unit of a university hospital, Pernambuco, Brazil. Participants 120 patients with tetanus allocated to antitetanus immunoglobulin by either the intrathecal and intramuscular route (n = 58) or the intramuscular route (n = 62; control group). Main outcome measures Clinical progression of disease, duration of hospital stay, duration of occurrence of spasms, complications, respiratory infection, respiratory failure or mechanical ventilation, duration of respiratory assistance, and mortality. Results Patients in the treatment group showed a better clinical progression than those in the control group (χ2 for trend 7.752, P = 0.005; difference in proportion of patients with improvement 20%, 95% confidence interval 4% to 35%). The duration of occurrence of spasms, hospital stay, and respiratory assistance were all shorter in patients the treatment group: respectively, 14.96, 0.0001 (difference in proportion of patients with spasms lasting ≤ 10 days 36%, 18% to 55%); 4.56, 0.03; and 6.56, 0.01 (proportion of patients who needed assistance for ≤ 10 days 69.2% in the treatment group and 30.8% in the control group (difference 38%, 12% to 65%)). Conclusion Patients treated with antitetanus immunoglobulin by the intrathecal route show better clinical progression than those treated by the intramuscular route.
77 citations
01 Mar 2004
TL;DR: Pregnancy during adolescence is not always perceived as a problem and that reinforces the value of designing prevention strategies considering local reality, according to a descriptive study involving pregnant adolescents under prenatal care in the family health units located in the Chie Island in Recife.
Abstract: OBJETIVOS: conhecer as percepcoes e praticas de adolescentes gravidas e de seus familiares em relacao a gestacao atual. METODOS: estudo descritivo com 19 gestantes, de 10-19 anos que realizaram pre-natal nas unidades de saude da familia da ilha do Chie, em Recife, de agosto a setembro de 2002, e 14 responsaveis pelas adolescentes. Utilizaram-se dois instrumentos para coleta de dados e as questoes abertas foram submetidas a analise de conteudo. RESULTADOS: as adolescentes tem a mae como responsavel pelo cuidado (71,5%), iniciaram-se sexualmente com o namorado (73,7%), com idade entre 10-14 anos (52,7%), usando metodo contraceptivo (68,4%) e tem antecedentes reprodutivos (42,1%). Metade desejava a gravidez atual, 78,5% recebem apoio afetivo e financeiro do pai da crianca e 57,2% da mae. Antes de engravidar 10,5% nao estudavam, nem trabalhavam, e atualmente 57,9% estao nessa condicao. Suas responsaveis sao mulheres, 21,4% analfabetas e 64,3% provem o sustento. Diante da gravidez das filhas sentiram alegria/satisfacao (35,7%) e desgosto (28,5%), e 92,9% aceitaram o fato. CONCLUSOES: a gravidez na adolescencia nem sempre e percebida como um problema, o que reforca a importância da construcao de estrategias de prevencao que considerem a realidade local.
TL;DR: In this paper, a perfil demografico e epidemiologico da clientela atendida na Emergencia de Adultos do Hospital da Restauracao, unidade de grande porte pertencente a Secretaria de Saude de Pernambuco, atende pacientes provenientes de to all as regioes do Estado.
Abstract: Estudo do perfil demografico e epidemiologico da clientela atendida na Emergencia de Adultos do Hospital da Restauracao, unidade de grande porte pertencente a Secretaria de Saude de Pernambuco e que atende pacientes provenientes de todas as regioes do Estado. OBJETIVO: Identificar o perfil da clientela atendida, sua adequacao a missao institucional e avaliar as mudancas ocorridas apos a municipalizacao dos servicos de saude, em 1994. METODO: O desenho de estudo foi o de analise de serie de dados, sendo a amostra constituida por 16.383 prontuarios de pacientes atendidos nos anos de 1993, 1997 e 2001. Foram estudadas as variaveis diagnostico (adequados e inadequados), municipalizacao, Programa de Saude da Familia, e as co-variaveis sexo, faixa etaria, dia, hora e procedencia. RESULTADOS: Em relacao a variavel diagnostico, constatou-se que a grande maioria foi inadequada (74,5%). A municipalizacao dos servicos de saude e a implantacao do Programa de Saude da Familia ao que parece nao acarretaram modificacoes significativas na demanda aos servicos. Duas faixas etarias (20-29 e 30-49 anos) perfazem mais da metade dos atendimentos. Por especialidades, a maior demanda e para a Traumatologia, seguindo-se a Clinica Cirurgica. A quase totalidade dos pacientes (90%) procede do Recife ou da Regiao Metropolitana, sendo a segunda-feira e o horario diurno os de maior demanda. Os resultados indicam que o Hospital cumpre sua missao de atendimento preferencial a politraumatismos, neurocirurgia e emergencias clinicas. No entanto, atende uma grande parcela de pacientes que nao estao adequados ao seu perfil, comprometendo a qualidade da assistencia prestada aqueles que o demandam.
TL;DR: Transfusional safety and the serological pre-transfusional evaluation in recipients of blood are points discussed in this review.
Abstract: A triagem sorologica em doadores de sangue, nao possibilita seguranca de 100% quanto a possibilidade de transmissao de agentes infecto-contagiosos. O Ministerio da Saude determina a realizacao de testes para sifilis, hepatite B e C, HIV, doenca de Chagas, HTLV I/II e malaria nas areas endemicas, em todas as unidades de sangue coletadas no Brasil. A amostra do doador deve ficar armazenada por um periodo minimo de seis meses. Com relacao aos receptores de sangue, o Ministerio determina a realizacao de testes imuno-hematologicos pre-transfusionais tais como classificacao ABO/Rh, pesquisa de anticorpos irregulares e testes de compatibilidade. Nesse caso, a amostra do receptor deve ficar armazenada por um periodo de dez dias. Considerando que algumas patologias testadas, quando nao detectadas no doador, podem ser transmitidas e cursar durante decadas sem apresentar sintomas, um estudo de provas entre receptores e seus respectivos doadores fica comprometido. Um recente estudo no Brasil, envolvendo receptores sem passado transfusional, eventual e politransfundidos mostrou uma importante prevalencia de patologias que podem ser transmitidas pelo sangue. O estudo revelou tambem que uma elevada percentagem dos receptores que apresentaram reatividade nao tinha conhecimento previo a transfusao do seu estado sorologico. A seguranca transfusional e a importância da aplicacao de testes sorologicos em receptores de sangue antes da transfusao sao pontos discutidos na presente revisao.
TL;DR: 6. Converse JM, Smith B, Obear MF, et al: Orbital blow-out fractures: A ten year survey.
TL;DR: The use of MMSE-mo in illiterate and low school individuals could prevent false positive and false negative cognitive evaluations in both test versions, the copy and calculation items contributing to this improvement.
Abstract: CONTEXTO: Existem evidencias de que a escolaridade pode influenciar o desempenho em testes de avaliacao cognitiva. Ja que em paises subdesenvolvidos o nivel educacional da maioria da populacao e baixo, isso poderia prejudicar resultados de avaliacao por meio de testes. Assim e oportuno adequar o mini exame do estado mental (MEEM) a populacoes de baixa escolaridade. OBJETIVO: Propor nova versao do MEEM como um teste geral para avaliar individuos analfabetos e com baixa escolaridade. METODO: Foram estudadas 232 pessoas de ambos os generos com 60 ou mais anos de idade, de classes socioeconomicas media e baixa. Foram considerados 3 grupos: analfabetos; 1-4 anos e 5-8 anos de escolaridade. A nova versao (MEEM-mo) consistiu de modificacoes nos itens copia e calculo do MEEM adaptado para a lingua portuguesa (MEEM-ad). O escore maximo possivel foi o mesmo nas duas versoes: total 30 pontos; copia, 1; calculo, 5 pontos. RESULTADOS: No escore total, o teste de ANOVA detectou efeitos principais para teste e escolaridade, assim como interacao entre estes fatores: individuos com escolaridade mais alta realizaram melhor ambos os testes do que aqueles com mais baixa escolaridade. Os escores do MEEM-mo foram mais elevados do que os do MEEMad, em cada grupo de escolaridade. CONCLUSAO: Individuos com maior escolaridade apresentam melhor performance em ambas as versoes dos testes; os itens copia e calculo foram responsaveis por este resultado. Isto pode depender de fatores culturais. O uso do MEEM-mo em individuos analfabetos e com baixa escolaridade pode prevenir resultados tanto falsopositivos como falsonegativos nas avaliacoes cognitivas.
TL;DR: The regimen with iron administered daily is still the best option for treating anemia, however, treatment with ferrous sulfate administered twice a week is an alternative for patients who are unable to adhere to daily treatment.
Abstract: OBJETIVO: Avaliar a efetividade de tres esquemas de tratamento utilizando sulfato ferroso em gestantes anemicas. METODOS: O estudo foi desenvolvido no Centro de Atencao a Mulher do Instituto Materno Infantil de Pernambuco, em Recife, no periodo de maio de 2000 a dezembro de 2001. Realizou-se um ensaio clinico, aleatorio e cego do ponto de vista laboratorial, utilizando comprimidos de 300 mg de sulfato ferroso para administracao de 60 mg de ferro elementar. As gestantes foram alocadas em tres grupos de tratamento, conforme a frequencia de administracao do ferro: uma vez por semana (n =48); duas vezes por semana (n =53); e uma vez ao dia (n =49). Foram comparadas as concentracoes de hemoglobina, volume corpuscular medio e ferritina. RESULTADOS: Antes da intervencao, os grupos eram homogeneos e apresentaram as seguintes medias e desvios-padrao nas concentracoes de hemoglobina: 10,2 ± 0,5 g/dL para o grupo que recebeu sulfato ferroso uma vez por semana; 10,2 ± 0,6 g/dL para o grupo que recebeu sulfato ferroso duas vezes por semana; e 10,1 ± 0,6 g/dL para o grupo que recebeu sulfato ferroso uma vez ao dia. As medias de volume corpuscular medio foram, respectivamente: 88,5 ± 5,0; 87,6 ± 5,9; e 88,7 ± 5,1 fL. As medianas de ferritina foram 30,2; 37,1; e 52,9 ng/mL. Houve 27% de cura no esquema de uma vez por semana, 34% no grupo tratado duas vezes por semana e 47% no tratamento diario. Houve fracasso terapeutico (hemoglobina <10 g/dL) em 41,6, 13,2 e 2,0% dos casos em cada grupo, respectivamente. Abandono do tratamento por queixa de diarreia ou dor epigastrica so foi observado no tratamento diario. CONCLUSAO: O tratamento diario continua sendo o mais eficaz. Contudo, o tratamento com sulfato ferroso duas vezes por semana e uma alternativa em caso de dificuldade de adesao ao tratamento diario.
TL;DR: Physical exercise causes a series of physiological responses resulting from autonomic and hemodynamic adaptation that affect the cardiovascular system that have a beneficial effect on blood pressure.
Abstract: Physical exercise causes a series of physiological responses resulting from autonomic and hemodynamic adaptation that affect the cardiovascular system. Many studies have demonstrated its beneficial effect on blood pressure. Bearing in mind that hypertension is a very prevalent condition causing high morbidity and mortality rate, the physical exercise plays an important role as a nondrug measure for its control or as an adjuvant to drug treatment.
TL;DR: In this article, the authors focused on barriers to dental care for pregnant women registered with the Health Family Program in Cabo de Santo Agostinho, Pernambuco, Brazil.
Abstract: This study focused on barriers to dental care for pregnant women registered with the Health Family Program in Cabo de Santo Agostinho, Pernambuco, Brazil. A qualitative approach using three focal groups was adopted. Each focal group included four to nine pregnant women. The information was analyzed by means of content analysis. The main individual barriers were folk beliefs that discouraged dental care during pregnancy, lack of perceived need, and fear of pain. In addition, the women reported difficulties in leaving home in the early hours of the morning to meet a dental appointment, highlighting an aspect of barriers to dental care which has not been identified in other studies. The article concludes by emphasizing the importance of health education for pregnant women, humanization of dental care, and continuing education for health professionals.
TL;DR: The aim of this study was to determine caries prevalence in 4-year-old preschoolers of both sexes in municipal schools in Recife, Pernambuco, Brazil, in 2002, emphasizing their needs assessment.
Abstract: The aim of this study was to determine caries prevalence in 4-year-old preschoolers of both sexes in municipal schools in Recife, Pernambuco, Brazil, in 2002, emphasizing their needs assessment. Data were collected by examining 861 preschoolers from 45 municipal schools. Examination was conducted by one examiner (Kappa = 1) in the school and after parental consent forms were obtained. Dental caries was recorded using the dmf-t (decayed, missing, and filled teeth) index. Data analysis showed caries prevalence of 47.00% and dmf-t of 2.06. Only 6.40% of the children had their teeth treated. The examined children showed high dental caries prevalence (47.00%), despite a low prevalence of severe caries (8.94%).
04 Sep 2004
TL;DR: In this work, a reconfigurable logic controller (RLC) approach is presented, based on a small and low cost Xilinx Virtex-II FPGA architecture, operating as a virtual hardware machine.
Abstract: The digital control systems in industry has been used in most of the applications based on expensive programmable logical controllers (PLC). These systems are, in general, highly complex and slow, with an operation cycle around 10 ms. In this work, a reconfigurable logic controller (RLC) approach is presented, based on a small and low cost Xilinx Virtex-II FPGA architecture, operating as a virtual hardware machine. In this context, the main process is specified in a formal language, based on Petri nets or SFC (sequential function chart). For applications that demand more hardware than that available in the FPGA, a partial reconfiguration mechanism takes place. From the Petri net specification, the main process is split into multiple contexts, which are sequentially executed within the same FPGA, without violating the operation cycle of application.
TL;DR: The practice of hydrogymnastics for elderly women with no regular physical exercises, contributes to the improvement of the physical fitness and elderly health.
Abstract: BASIS AND OBJECTIVES: The practice of physical exercises, besides avoiding idleness, contributes expressively for the maintenance of the physical fitness of the elderly. The objective of this study was to verify the effect of hydrogymnastics on the physical fitness and the elderly health. METHODOLOGY: A controlled assay on 74 elderly women with no regular physical activity was performed. A group of 37 women had two weekly hydrogymnastics classes during 3 months and other 37 women served as control. The physical fitness was evaluated though the Rikli and Jones (1999) test battery, where the following parameters were evaluated: power and resistance of the lower members (to sit down and to stand up), power and resistance of the upper members (forearm flexion), lower members flexion (at sitting position, to touch lower members), physical mobility - velocity, agility and balance (to stand up, to walk 2.44 m and to sit back down), flexibility of the upper members (reading up the back with hands) and aerobic resistance (6-minute walk). The test battery was applied before the beginning of classes and at the end of the program 3 months later. The groups had similar behavior with regard to age, IMC, familiar income and educational level. RESULTS: During the three months, 30 women of each group were followed, sampling loss of 18.9%. In the hydrogymnastics group, a better performance in all post-tests was observed, when compared to results of the own group in the pre-test and to the control group in the post-test (p < 0.05). CONCLUSION: One concludes that the practice of hydrogymnastics for elderly women with no regular physical exercises, contributes to the improvement of the physical fitness and elderly health.
TL;DR: Epineural suturing offered superior performance versus anastomosis with fibrin adhesive in terms of axon count but not in decrease in conduction velocity.
TL;DR: The immunohistochemical findings of the present study suggest that the mono‐, bi‐ or multinucleate stellate giant cells observed in the lesions studied derived from the fibroblastic lineage.
TL;DR: It is concluded that the reductive dechlorination with metallic iron can have different results, depending on the type of contaminant, and the formation of chlorinated byproducts that are not degradable using this same technology emphasises that the treatment of aquifers should be sequential.
TL;DR: The nucleolar organizer regions detected by AgNO3 staining were limited to autosomes in all the species and showed correspondence with GC base pairs distribution detected by sequential staining (AgNO3/CMA3/DA).
Abstract: Cornops aquaticum, C. frenatum frenatum, Stenopola dorsalis, Ste-nacris xanthochlora and Tucayaca parvula were analyzed cytologically by standard staining, C-banding, silver nitrate staining (AgNO3...
01 Jan 2004
TL;DR: Approximated wavelet-based versions of EGG signals were calculated using Pollen parameterization of 6-tap wavelet filters and wavelet compression techniques and the wavelets generated were remarkably similar to the standard Daubechies-3 wavelet.
Abstract: Matching a wavelet to class of signals can be of interest in feature detection and classification based on wavelet representation. The aim of this work is to provide a quantitative approach to the problem of matching a wavelet to electrogastrographic (EGG) signals. Visually inspected EGG recordings from sixteen dogs and six volunteers were submitted to wavelet analysis. Approximated wavelet-based versions of EGG signals were calculated using Pollen parameterization of 6-tap wavelet filters and wavelet compression techniques. Wavelet parameterization values that minimize the approximation error of compressed EGG signals were sought and considered optimal. The wavelets generated from the optimal parameterization values were remarkably similar to the standard Daubechies-3 wavelet.
TL;DR: Two SP from the minor salivary gland of the palate of middle age patients were presented and studied by immunohistochemical, showing presence of cytokeratins (CKs) 13, 14, 7, 8, 19 and absence of vimentin and smooth muscle actin.
TL;DR: Os achados sugerem a necessidade of priorizar a melhoria das condicoes socioeconomicas e de moradia da populacao mais carente, principalmente aquela oriunda do meio rural.
Abstract: OBJETIVO: Determinar fatores de risco socio-ambientais associados ao desenvolvimento de comprometimento pleural em criancas de 3 a 59 meses internadas com pneumonia grave em um hospital do Nordeste brasileiro. METODOS: Estudo observacional, transversal, descritivo, com componente analitico. Foram avaliados 154 pacientes hospitalizados com pneumonia grave, com ou sem comprometimento pleural. O comprometimento pleural foi definido segundo achados radiologicos. As seguintes variaveis socio-ambientais foram analisadas: faixa etaria, sexo, local de residencia, condicoes do domicilio, frequencia a creche, fumo passivo, renda familiar, presenca de bens de consumo, escolaridade e trabalho extra-domiciliar da mae ou responsavel pela crianca. As informacoes foram obtidas atraves de entrevistas com o responsavel pelo paciente ou consulta ao prontuario medico durante a hospitalizacao. RESULTADOS: A frequencia de comprometimento pleural foi de 25,3%. Os seguintes fatores foram associados a ocorrencia de comprometimento pleural: residencia em zona rural, dois comodos ou menos no domicilio, renda familiar mensal inferior a 170 dolares e peso de nascimento <2 500 g. CONCLUSOES: Os achados sugerem a necessidade de priorizar a melhoria das condicoes socioeconomicas e de moradia da populacao mais carente, principalmente aquela oriunda do meio rural. O setor saude deve enfatizar a atencao primaria, com enfoque preventivo desde o periodo pre-natal.
01 Sep 2004
TL;DR: The problems affecting the uptake or inhibiting processes of iron absorption are highlighted in an attempt to correlate information on conditioning factors and current findings.
Abstract: The authors focus iron intake regulation in the body and the probable mechanisms related to iron absorption. They analyze the impact of iron absorption deficiency resulting in iron deficiency anemia, a public health issue of great impact in the world influencing child and maternal health risk increase. This paper aims at highlighting the problems affecting the uptake or inhibiting processes of iron absorption in an attempt to correlate information on conditioning factors and current findings. This study is a document based descriptive study comprising literature review. In food, iron has different forms, such as the heme and non-heme forms following different absorption pathways with different efficiency rates, depending on conditioning factors, such as diet profile, physiological aspects, iron chemical state, absorption regulation, transportation, storing, excretion and the presence of disease, They also discuss the current difficulties in dealing with iron nutritional deficiency in vulnerable groups, children and pregnant women, and focus data on iron consumption, adhesion to breast feeding and the frequency of prenatal care visits.
08 Nov 2004
TL;DR: In this paper, the main limiting operational factors of planning wind-diesel hybrid power systems are analyzed and some solutions are presented for the main power operation and planning constraints related to wind power integration.
Abstract: This paper presents the main limiting operational factors of planning wind-diesel hybrid power systems. The Fernando de Noronha Island, the largest wind-diesel system installed in Brazil, is used as study case. The main operational factors analysed in this paper are the voltage level, the diesel operational limits and electrical losses. The main power operation and planning constraints related to wind power integration are analysed and some solutions presented.