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Search Results: 1 - 10 of 8649 matches for " Helena Hollanda;Valadares "
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Córnea verticilata - marcador clínico da doen?a de Fabry: relato de caso
Cordeiro, Cynthia Azeredo;Oréfice, Fernando;Lasmar, Euler Pace;Santos, Helena Hollanda;Valadares, Eugênia Ribeiro;
Arquivos Brasileiros de Oftalmologia , 2007, DOI: 10.1590/S0004-27492007000400024
Abstract: fabry's disease is a rare x-linked lisosomal storage disorder of glycosphingolipid (gl) metabolism, caused by a deficiency of a-galactosidase a activity. the progressive accumulation of gl in tissues results in the clinical manifestations of the disease, that are more evident in hemizygous males, and include angiokeratomas, acroparesthesia, cornea verticillata, cardiac and kidney involvement, cerebrovascular manifestations. a family with fabry's disease including 2 female patients and 3 male patients is reported. the patients were submitted to complete medical history, ophthalmological examination and alpha-galactosidase activity test. cornea verticillata was a constant finding in all patients. this demonstrates the important role of the ophtalmological examination for the diagnosis of fabry's disease since the eye findings are so characteristic of the disease.
Juvenile neuronal ceroid-lipofuscinosis: clinical and molecular investigation in a large family in Brazil
Valadares, Eugênia Ribeiro;Pizarro, Mayara Xavier;Oliveira, Luiz Roberto;Amorim, Regina Helena Caldas de;Pinheiro, Tarcísio Márcio Magalh?es;Grieben, Ulrike;Santos, Helena Hollanda;Queiroz, Rachel Rabelo;Lopes, Guilherme de Castro;Godard, Ana Lúcia Brunialti;
Arquivos de Neuro-Psiquiatria , 2011, DOI: 10.1590/S0004-282X2011000100004
Abstract: objective: juvenile neuronal ceroid-lipofuscinosis (jncl, cln 3, batten disease) (omim #204200) belongs to the most common group of neurodegenerative disorders of childhood. we report the clinical data and molecular analysis of a large brazilian family. method: family composed of two consanguineous couples and thirty-two children. clinical data of ten jncl patients and molecular analyses on 13 participants were obtained. results: the large 1.02 kb deletion was detected. the most severe phenotype, with autistic behavior, tics and parkinsonism was seen in a 12-year-old female and a milder phenotype in a 14-year-old male. nyctalopia was the first symptom in one deceased child. the visual loss of six patients has been first observed in the school and not at home. conclusion: the report highlights the phenotypical intrafamily variation in 10 affected children of this family. the molecular investigation of this large family in our metabolic center turned possible the diagnosis, right approach and genetic counseling.
Posicionamento da pelve e lordose lombar em mulheres com incontinência urinária de esfor?o
Araújo, Thaís Helena Prado;Francisco, Luciana Teodora Pereira;Leite, Raquel Freire;Iunes, Denise Hollanda;
Fisioterapia e Pesquisa , 2010, DOI: 10.1590/S1809-29502010000200007
Abstract: the purpose here was to search for associations between lumbar lordosis and pelvis position, on the one hand, and stress urinary incontinence (sui) on the other, by means of photogrammetry and radiography, also comparing results obtained by the two methods. twenty women with sui were compared to 20 continent controls. lumbar lordosis (ll), pelvis symmetry, and pelvic bascule (pb) were analysed on the photographs taken; on radiographies of the lumbosacral spine, cobb, lumbosacral and sacral inclination angles were measured. comparisons between results were statistically analysed and significance level set at 5%. no significant differences were found between groups as to pelvis symmetry or ll, but a difference was found in the pb angle (-3.69 in sui group, -8.18 in control), pointing to a trend to pelvis anteversion in the latter. as to the other angles, no differences were found between the groups; both women with sui and controls presented as many pelvic changes, thus suggesting that ll and pelvis position do not interfere in sui. the comparison between data of the total sample obtained by photogrammetry and radiography showed only a poor correlation between ll as measured by photography and the sacral angle as measured by radiography.
Shrimp U-Pb age and Sr-Nd isotopes of the Morro do Baú mafic intrusion: implications for the evolution of the Arenópolis volcano-sedimentary sequence, Goiás Magmatic Arc
Pimentel, Márcio M.;Hollanda, Maria Helena B. M.;Armstrong, Richard;
Anais da Academia Brasileira de Ciências , 2003, DOI: 10.1590/S0001-37652003000300006
Abstract: the arenópolis volcano-sedimentary sequence is located in the southern part of the goiás magmatic arc and includes a ca. 900 ma calc-alkaline arc sequence made of volcanic rocks ranging in composition from basalts to rhyolites, metamorphosed under greenschist to amphibolite facies. small calc-alkaline gabbro to granite sub-volcanic bodies are also recognized. the morro do baú intrusion is the largest of these intrusions, and is made of gabbros and diorites. zircon grains separated from one gabbro sample and analyzed by shrimp i yielded the mean 206pb/238u age of 890 +/- 8 ma, indicating that the intrusion is roughly coeval or only slightly younger than the arenópolis volcanics. contrary to the metavolcanics, which are juvenile, the nd isotopic composition of the morro do baú gabbro indicates strong contamination with archean sialic material (tdm of 2.8 ga and epsilonnd(t) of -9.7), represented in the area by an allochthonous sliver of archean/paleoproterozoic gneisses (ribeir?o gneiss) which are the country-rocks for the gabbro/dioritic intrusion. the emplacement age of ca. 890 ma represents a minimum age limit for the tectonic accretion of the gneiss sliver to the younger rocks of the arenópolis sequence. the data suggest that this happened early in the evolution of the goiás magmatic arc, between ca. 920 and 890 ma.
Geology and Chemical Characterization of the Ultrapotassic Peralkaline Magmatism of the Manaíra-Princesa Isabel Dike Swarm, Borborema Provine
Maria Helena Bezerra Maia de Hollanda,Carolina Pelaéz Mejía,Carlos José Archanjo,Richard Armstrong
Geologia USP : Série Científica , 2009,
Abstract: The Manaíra-Princesa Isabel dike swarm forms one of the most expressive examples of Neoproterozoic (c. 600 Ma)peralkaline magmatism in the Borborema Province (NE Brazil). It consists of about a hundred NE-trending bodies intrusivein older, Neoproterozoic porphyritic granites (Princesa Isabel and Tavares plutons), and orthogneisses and low-grademetasediments of the Eo-neoproterozoic Riacho Gravatá complex. The dike swarm includes mostly silica-saturated syenites,with potassic to ultrapotassic, peralkaline affinity, containing microcline and sodic amphibole ± pyroxene as the mainmineral assemblage. Amphibole is dominantly Mg-riebeckite (Manaíra, Princesa Isabel and Tavares sub-swarms), whereaspyroxene is mainly aegirine-augite (Manaíra and Tavares sub-swarms). A minor set of dikes from this swarm is slightlymetaluminous with Mg-biotite as the major mafic phase. Geochemical and isotopic signatures indicate strong enrichmentin incompatible elements (Rb, Ba, K, Th, U), in association with a negative Nb anomaly, and strongly radiogenic 87Sr/86Srand 143Nd/144Nd (= negative εNd values) initial ratios. These features suggest a common source, which was probably an enriched lithospheric mantle reservoir, chemically modifi ed by an ancient subduction component inferred to be Paleoproterozoic fromTDM model ages. Conversely, Pb isotopic ratios lower than average crustal values indicate the influence of a non-radiogenic componentinteracting with the enriched mantle source. A SHRIMP U-Pb age of c. 600 Ma obtained for the Manaíra-Princesa Isabel dike swarmdefi nes an important crustal exhumation period which was relatively synchronous with intensive tectonomagmatic activity related tothe Brasiliano orogeny, which occurred in distinct structural domains within the Transverse Zone of the Borborema Province.
Shrimp U-Pb age and Sr-Nd isotopes of the Morro do Baú mafic intrusion: implications for the evolution of the Arenópolis volcano-sedimentary sequence, Goiás Magmatic Arc
Pimentel Márcio M.,Hollanda Maria Helena B. M.,Armstrong Richard
Anais da Academia Brasileira de Ciências , 2003,
Abstract: The Arenópolis volcano-sedimentary sequence is located in the southern part of the Goiás Magmatic Arc and includes a ca. 900 Ma calc-alkaline arc sequence made of volcanic rocks ranging in composition from basalts to rhyolites, metamorphosed under greenschist to amphibolite facies. Small calc-alkaline gabbro to granite sub-volcanic bodies are also recognized. The Morro do Baú intrusion is the largest of these intrusions, and is made of gabbros and diorites. Zircon grains separated from one gabbro sample and analyzed by SHRIMP I yielded the mean 206Pb/238U age of 890 +/- 8 Ma, indicating that the intrusion is roughly coeval or only slightly younger than the Arenópolis volcanics. Contrary to the metavolcanics, which are juvenile, the Nd isotopic composition of the Morro do Baú gabbro indicates strong contamination with archean sialic material (T DM of 2.8 Ga and EpsilonNd(T) of -9.7), represented in the area by an allochthonous sliver of archean/paleoproterozoic gneisses (Ribeir o gneiss) which are the country-rocks for the gabbro/dioritic intrusion. The emplacement age of ca. 890 Ma represents a minimum age limit for the tectonic accretion of the gneiss sliver to the younger rocks of the Arenópolis sequence. The data suggest that this happened early in the evolution of the Goiás Magmatic Arc, between ca. 920 and 890 Ma.
Rela??o entre as massas úmida, seca e de cinza em materiais biológicos - uma ferramenta para amostragens em campo e análise de amostras
Vasconcellos, Luisa Maria de Hollanda e;Lauria, Dejanira da Costa;Silva, Lucia Helena Costa;Taddei, José Fernando;
Química Nova , 1999, DOI: 10.1590/S0100-40421999000600017
Abstract: little is known about the amount of water and ash in brazilian foodstuffs and plants. the relationships between fresh, dry and ash weight were determined in 40 different biological samples. it could be an important tool when one studies biological material containing low concentration of the chemical elements. this study address to determine these relationships and to provide the amount of biological material that one needs to collect. it aims to supply information that could be used to improve the detection limit, precision and accuracy of the analytical methodology utilized.
Rela o entre as massas úmida, seca e de cinza em materiais biológicos - uma ferramenta para amostragens em campo e análise de amostras
Vasconcellos Luisa Maria de Hollanda e,Lauria Dejanira da Costa,Silva Lucia Helena Costa,Taddei José Fernando
Química Nova , 1999,
Abstract: Little is known about the amount of water and ash in brazilian foodstuffs and plants. The relationships between fresh, dry and ash weight were determined in 40 different biological samples. It could be an important tool when one studies biological material containing low concentration of the chemical elements. This study address to determine these relationships and to provide the amount of biological material that one needs to collect. It aims to supply information that could be used to improve the detection limit, precision and accuracy of the analytical methodology utilized.
Prevalence of endodontically treated teeth in a Brazilian adult population
Hollanda, Augusto César Braz;Alencar, Ana Helena Gon?alves de;Estrela, Cyntia Rodrigues de Araújo;Bueno, Mike Reis;Estrela, Carlos;
Brazilian Dental Journal , 2008, DOI: 10.1590/S0103-64402008000400005
Abstract: this cross-sectional study examined the prevalence of endodontically treated teeth in 1,401 brazilian adults. panoramic radiographs were selected at the radiological center of orofacial images (criof, cuiabá, mt, brazil) between august 2002 and september 2007. three independent endodontists discussed interpretation criteria and classified specimens according to the following data: presence of root canal treatment, which was defined as partially or completely filled canal space, regardless of whether filling ended at the radiographic apex or not; presence of intracanal post; and associated apical periodontitis. odds ratio, logistic regression and a chi-square test were used for statistical analyses. significance level was set at p<0.05. of 29,467 teeth evaluated, 6,313 (21.4%) were treated endodontically. endodontic treatment was most frequent in maxillary premolars and molars, whereas mandibular incisors showed the lowest prevalence. most endodontically treated teeth were found in people aged 46 to 60 years (47.6%, p<0.001) and the prevalence increased with age in this age range. females (61.9%, p<0.001) showed a higher prevalence of teeth with root fillings than males. the present study found a higher prevalence of endodontically treated teeth in a brazilian adult population compared to the prevalence reported in epidemiological studies conducted in other countries.
Fluoride in the Serra Geral Aquifer System: Source Evaluation Using Stable Isotopes and Principal Component Analysis
Arthur Schmidt Nanni,Ari Roisenberg,Maria Helena Bezerra Maia de Hollanda,Maria Paula Casagrande Marimon,Antonio Pedro Viero,Luiz Fernando Scheibe
Journal of Geological Research , 2013, DOI: 10.1155/2013/309638
Abstract: Groundwater with anomalous fluoride content and water mixture patterns were studied in the fractured Serra Geral Aquifer System, a basaltic to rhyolitic geological unit, using a principal component analysis interpretation of groundwater chemical data from 309 deep wells distributed in the Rio Grande do Sul State, Southern Brazil. A four-component model that explains 81% of the total variance in the Principal Component Analysis is suggested. Six hydrochemical groups were identified. δ18O and δ2H were analyzed in 28 Serra Geral Aquifer System samples in order to identify stable isotopes patterns and make comparisons with data from the Guarani Aquifer System and meteoric waters. The results demonstrated a complex water mixture between the Serra Geral Aquifer System and the Guarani Aquifer System, with meteoric recharge and ascending water infiltration through an intensive tectonic fracturing. 1. Introduction In the last several decades, the global water consumption has dramatically increased, especially for agriculture, water supply, and industrial uses. This paper examines the fluoride content in water from the southernmost region of the fractured subcontinental Serra Geral Aquifer System (SGAS), an important aquifer that supplies a large amount of water for an economic developed region in Southern Brazil. Fluoride content in water is beneficial to human health and in a moderate concentration (0.7–1.2?mg/L) prevents dental cavities. When used in excess can be toxic causing human and animal dental and skeletal fluorosis, which has been detected in China [1, 2], India [3], Kenya [4], and Israel [5], among other countries. The drinking water limit recommended by the World Health Organization for fluoride is 1.5?mg/L [6]. In the study area, the SGAS fluoride average concentrations are around 0.24?mg/L, with a minimum value of 0.02?m/L and the highest at 3.03?mg/L. The SGAS overlies the Guarani Aquifer System (GAS; [7]), which has been the focus of several recent studies due to its spatial extent and storage potential as a transboundary aquifer [8]. The area covered by the SGAS in Brazil, Uruguay, Argentina, and Paraguay is equivalent to 1,200,000?km2 (Figure 1). In Brazil, these groundwater resources should be efficiently managed to protect its water potential and quality. The climate in the study area ranges from subtropical to temperate, with precipitation average of 1,550?mm/year. Figure 1: Location map showing the Serra Geral Formation (SGF) in South America (modified from [ 9]). The SGAS reaches its maximum thickness of about 1,800?m along the central
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