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Search Results: 1 - 10 of 338308 matches for " Simone F. P.;Alves "
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Levels of As, Cd, Pb and Hg found in the hair from people living in Altamira, Pará, Brazil: environmental implications in the Belo Monte area
Carvalho, Antonio S. C.;Santos, Alberdan S.;Pereira, Simone F. P.;Alves, Cláudio N.;
Journal of the Brazilian Chemical Society , 2009, DOI: 10.1590/S0103-50532009000600022
Abstract: human hair was used as a bioindicator to evaluate the levels of as, cd, pb and hg in the resident population of the "volta grande" area of the xingu river, in the north of brazil. the concentrations of as and cd are in agreement with the values found in the literature, however, the pb and hg concentration is very different, which can suggest an inter-regional variation. moreover, the high values found for these elements in the residents of the canteiro island can be attributed to environmental exposure of this population in an area with environmental impact from activities of gold mining. the application of these methods showed that the concentrations of the metals studied in this work can correctly classify two different localities in the altamira district. the results reflect the impact of these elements on the health of the inhabitants of this auriferous area.
Two-year follow-up study of elderly residents in S. Paulo, Brazil: methodology and preliminary results
Ramos,Luiz R.; Toniolo N.,Jo?o; Cendoroglo,Maysa S.; Garcia,Jacqueline T.; Najas,Myrian S.; Perracini,Monica; Paola,Cristina R.; Santos,Fania C.; Bilton,Tereza; Ebel,Simone J.; Macedo,Maria B. M.; Almada F.,Clineu M.; Nasri,Fabio; Miranda,Roberto D.; Gon?alves,Marília; Santos,Ana L. P.; Fraietta,Renato; Vivacqua N.,Ismael; Alves,Marcia L. M.; Tudisco,Eliete S.;
Revista de Saúde Pública , 1998, DOI: 10.1590/S0034-89101998000500001
Abstract: introduction: previous cross-sectional studies have shown a high prevalence of chronic disease and disability among the elderly. given brazil?s rapid aging process and the obvious consequences of the growing number of old people with chronic diseases and associated disabilities for the provision of health services, a need was felt for a study that would overcome the limitations of cross-sectional data and shed some light on the main factors determining whether a person will live longer and free of disabling diseases, the so-called successful aging. the methodology of the first follow-up study of elderly residents in brazil is presented. method: the profile of the initial cohort is compared with previous cross-sectional data and an in-depth analysis of nonresponse is carried out in order to assess the validity of future longitudinal analysis. the epidoso (?epidemiologia do idoso?) study conducted a two-year follow-up of 1,667 elderly people (65+), living in s. paulo. the study consisted of two waves, each consisting of household, clinical, and biochemical surveys. results and conclusions: in general, the initial cohort showed a similar profile to previous cross-sectional samples in s. paulo. there was a majority of women, mostly widows, living in multigenerational households, and a high prevalence of chronic illnesses, psychiatric disturbances, and physical disabilities. despite all the difficulties inherent in follow-up studies, there was a fairly low rate of nonresponse to the household survey after two years, which did not actually affect the representation of the cohort at the final household assessment, making unbiased longitudinal analysis possible. concerning the clinical and blood sampling surveys, the respondents tended to be younger and less disabled than the nonrespondents, limiting the use of the clinical and laboratory data to longitudinal analysis aimed at a healthier cohort. it is worth mentioning that gender, education, family support, and socioeconom
Developments on drug discovery and on new therapeutics: highly diluted tinctures act as biological response modifiers
Carolina C de Oliveira, Ana Abud, Simone M de Oliveira, Fernando de SF Guimar?es, Lucas F de Andrade, Raffaello P Di Bernardi, Ediely L de O Coletto, Diogo Kuczera, Eneida J Da Lozzo, Jenifer P Gon?alves, Edvaldo da S Trindade, Dorly de F Buchi
BMC Complementary and Alternative Medicine , 2011, DOI: 10.1186/1472-6882-11-101
Abstract: We have developed and tested several highly diluted tinctures and here we describe the biological activity of M1, M2, and M8 both in vitro in immune cells from mice and human, and in vivo in mice. Cytotoxicity, cytokines released and NF-κB activation were determined after in vitro treatment. Cell viability, oxidative response, lipid peroxidation, bone marrow and lymph node cells immunophenotyping were accessed after mice in vivo treatment.None of the highly diluted tinctures tested were cytotoxic to macrophages or K562. Lipopolysaccharide (LPS)-stimulated macrophages treated with all highly diluted tinctures decreased tumour necrosis factor alpha (TNF-α) release and M1, and M8 decreased IFN-γ production. M1 has decreased NF-κB activity on TNF-α stimulated reporter cell line. In vivo treatment lead to a decrease in reactive oxygen species (ROS), nitric oxide (NO) production was increased by M1, and M8, and lipid peroxidation was induced by M1, and M2. All compounds enhanced the innate immunity, but M1 also augmented acquired immunity and M2 diminished B lymphocytes, responsible to acquired immunity.Based on the results presented here, these highly diluted tinctures were shown to modulate immune responses. Even though further investigation is needed there is an indication that these highly diluted tinctures could be used as therapeutic interventions in disorders where the immune system is compromised.Highly diluted substances and tinctures are usually intended to enhance the immune system resulting in reduced frequency of various diseases. The immune system is a complex network that integrates lymphoid organs, cells, humoral factors, and cytokines. The essential function of the immune system is host defense, but when it does not work properly the disease emerges. For instance, underactivity may result in severe infections and tumors of immunodeficiency, overactivity in allergic and autoimmune disease [1]. When the body successfully fights any potential harmfully agent
Resiliência: Uma Possibilidade de Ades o e Permanência na Prática do Futebol Feminino
Carlos Nazareno Ferreira Borges,Simone Magalh?es Lopes,Claudia Aleixo Alves,Fábio Padilha Alves
Movimento , 2006,
Abstract: El presente estudio investiga la posible existencia del comportamiento resilicente en las chicas practicantes del fútbol, teniendo como muestra un grupo de ni as, de clase pobre, practicantes de la modalidad en Vi osa-MG. Frente a las dificultades encontradas para la adhesión y permanencia nel fútbol, comunes a la clase social y al genero del grupo elegido, é posible creer que la resilicencia las mantiene en la practica, como un recurso para la conquista de áreas de actuación masculina. La metodología utilizada fue compuesta de observación participante, apuntes, fotografías e filmación que hicieran posible evidenciar el posible comportamiento resilicente de las ni as.
Reproduction of the fish Lutjanus analis (mutton snapper; Perciformes: Lutjanidae) from Northeastern Brazil
Teixeira,Simone F; Duarte,Yalan F; Ferreira,Beatrice P;
Revista de Biología Tropical , 2010,
Abstract: the mutton snapper lutjanus analis is an overexploited species of economic importance for the northeast region of brazil. to determine the reproductive aspects of the mutton snapper, biological data were sampled from bahia, pernambuco, paraíba, rio grande do norte and ceará states, between 7 and 200m depth, from february 1997 to december 1999, performed in the brazilian economic exclusive zone study program (revizee-ne program). data on total length (tl), fork length (fl), standard length (sl), total weight (tw) and gutted weight (gw) were measured. the gonads were collected and fixed in faacc for histological analysis on maturational stage and calculation of the gonadosomatic index (gsi). a total of 135 fishes were collected; from these, 74 were females and 61 were males. females were between 28.0 and 69.0cm (tl) and the males between 35.0 and 75.0cm (tl). mutton snapper are gonochorists, and the spawning season, determined by the maturity stages frequency and the gsi, occurred between november and april, with peak spawning in march. the mature females’ minimum length was 28.0cm fork length, smaller than the minimum maturation length previously reported for the species in cuba. the exploitation status of the species and the biological traits enhances the importance of establishing spatial and seasonal protection measures such as protected areas both in nursery and spawning sites. rev. biol. trop. 58 (3): 791-800. epub 2010 september 01.
Reproduction of the fish Lutjanus analis (mutton snapper; Perciformes: Lutjanidae) from Northeastern Brazil
Simone F Teixeira,Yalan F Duarte,Beatrice P Ferreira
Revista de Biología Tropical , 2010,
Abstract: The mutton snapper Lutjanus analis is an overexploited species of economic importance for the Northeast region of Brazil. To determine the reproductive aspects of the mutton snapper, biological data were sampled from Bahia, Pernambuco, Paraíba, Rio Grande do Norte and Ceará States, between 7 and 200m depth, from February 1997 to December 1999, performed in the Brazilian Economic Exclusive Zone Study Program (REVIZEE-NE Program). Data on total length (TL), fork length (FL), standard length (SL), total weight (TW) and gutted weight (GW) were measured. The gonads were collected and fixed in FAACC for histological analysis on maturational stage and calculation of the gonadosomatic index (GSI). A total of 135 fishes were collected; from these, 74 were females and 61 were males. Females were between 28.0 and 69.0cm (TL) and the males between 35.0 and 75.0cm (TL). Mutton snapper are gonochorists, and the spawning season, determined by the maturity stages frequency and the GSI, occurred between November and April, with peak spawning in March. The mature females’ minimum length was 28.0cm fork length, smaller than the minimum maturation length previously reported for the species in Cuba. The exploitation status of the species and the biological traits enhances the importance of establishing spatial and seasonal protection measures such as protected areas both in nursery and spawning sites. Rev. Biol. Trop. 58 (3): 791-800. Epub 2010 September 01. El pargo criollo Lutjanus analis es una especie de importancia económica para la región noreste de Brasil, que esta siendo sobreexplotada. Para determinar sus aspectos reproductivos, se tomaron datos biológicos en los Estados de Bahía, Pernambuco, Paraíba, Rio Grande do Norte y Ceará, entre 7 y 200m de profundidad, de febrero 1997 a diciembre 1999, en el Programa de REVIZEE-NE en la Zona Económica Exclusiva de Brasil. Se midieron la longitud total (LT), longitud de horquilla (FL), longitud estándar (SL), el peso total (TW) y peso evicerado (GW). Las gónadas se recolectaron y fijaron en FAACC para el análisis histológico de las etapas de maduración y el cálculo del índice gonadosomático (IGS). Se recolectaron un total de 135 hembras y 61 machos. Las hembras midieron 28.0-69.0cm (TL) y los machos entre 35.0-75.0cm (TL). Lutjanus analis es gonocorista, y la época de desove, determinada por la frecuencia de las etapas de maduración y el GSI, ocurre entre noviembre y abril, con con un pico de desove en marzo. La longitud mínima (FL) de las hembras maduras fue 28.0cm, menor que la reportada para la especie en Cuba. El estado
Morphology and Thermal Properties of Core-Shell PVA/PLA Ultrafine Fibers Produced by Coaxial Electrospinning  [PDF]
Raquel P. Gon?alves, Flavia F. F. da Silva, Paulo H. S. Picciani, Marcos L. Dias
Materials Sciences and Applications (MSA) , 2015, DOI: 10.4236/msa.2015.62022
Abstract: Coaxial electrospinning process was used to produce biodegradable membranes made of coreshell fibers of a poly(lactic acid) (PLA) shell and a poly(vinyl alcohol) (PVA) core. Scanning electron microscopy analyses of these structures showed that the PLA shell can present certain porosity depending on the process condition. FTIR-ATR and contact angle measurements also suggested imprisonment of the PVA core within the PLA shell. This type of structure was also confirmed by means of transmissions electron microscopy. The morphology of these fibers was dependent on the flow rate of both core and shell solutions, and homogeneous and smooth surface was only attained when the flow rate of the external PLA solution was 4 times the flow rate of the internal PVA solution. The increase in the PLA solution flow rate increases the diameter of the core-shell fiber which reaches up to 1.7 μm. Nevertheless, fibers with smaller average diameter could also be produced (200 nm). These core-shell fibers presented improved hydrophilicity as compared with monolithic PLA fibers.
The Tectonic interaction between the Paramirim Aulacogen and the Ara?uaí Belt, S?o Francisco craton region, Eastern Brazil
Cruz, Simone C.P.;Alkmim, Fernando F.;
Anais da Academia Brasileira de Ciências , 2006, DOI: 10.1590/S0001-37652006000100014
Abstract: the paramirim aulacogen, hosted in the northern part of the s?o francisco craton, corresponds to two superimposed and partially inverted rifts of paleo and neoproterozoic ages. the rio pardo salient of the ara?uaí belt defines the local limit of the craton and interferes with the aulacogen structures. in order to understand the mechanism and timing of the tectonic interaction between these tectonic features during the inversion processes, a structural analysis was undertaken in the southern paramirim aulacogen and along the rio pardo salient. the results obtained indicate that the rio pardo salient formed during an early stage of closure of the neoproterozoic macaúbas rift system and consequent initiation of the ara?uaí orogen. the orogenic front propagated further northwards into the craton, causing a first stage of inversion in the southern terminus of the aulacogen trough. subsequently, the paramirim aulacogen experienced the main stage of inversion, which led to the development of a nnw-oriented basement involved fold-thrust system. these fabric elements overprint the rio pardo salient, and the structures of both the first and second stages of inversion affect the salitre formation, the youngestneoproterozoic unit of the area, clearly indicating a late neoproterozoic maximum age for all the inversion stages of the paramirim aulacogen.
The Tectonic interaction between the Paramirim Aulacogen and the Ara uaí Belt, S o Francisco craton region, Eastern Brazil
Cruz Simone C.P.,Alkmim Fernando F.
Anais da Academia Brasileira de Ciências , 2006,
Abstract: The Paramirim aulacogen, hosted in the northern part of the S o Francisco craton, corresponds to two superimposed and partially inverted rifts of Paleo and Neoproterozoic ages. The Rio Pardo salient of the Ara uaí belt defines the local limit of the craton and interferes with the aulacogen structures. In order to understand the mechanism and timing of the tectonic interaction between these tectonic features during the inversion processes, a structural analysis was undertaken in the southern Paramirim aulacogen and along the Rio Pardo salient. The results obtained indicate that the Rio Pardo salient formed during an early stage of closure of the Neoproterozoic Macaúbas rift system and consequent initiation of the Ara uaí orogen. The orogenic front propagated further northwards into the craton, causing a first stage of inversion in the southern terminus of the aulacogen trough. Subsequently, the Paramirim aulacogen experienced the main stage of inversion, which led to the development of a NNW-oriented basement involved fold-thrust system. These fabric elements overprint the Rio Pardo salient, and the structures of both the first and second stages of inversion affect the Salitre Formation, the youngestNeoproterozoic unit of the area, clearly indicating a Late Neoproterozoic maximum age for all the inversion stages of the Paramirim aulacogen.
An electronic solution for the direct connection of a three-phase induction generator to a single-phase feeder
Machado, Ricardo Q.;Gon?alves, Amílcar F. Q.;Buso, Simone;Pomilio, José A.;
Sba: Controle & Automa??o Sociedade Brasileira de Automatica , 2009, DOI: 10.1590/S0103-17592009000300012
Abstract: this paper proposes a solution for the direct connection of a three-phase induction generator to a single-phase feeder. this high power quality system is intended to be used in micro-hydro power plants applications with control of the water flow. it is employed to maintain the speed of the induction generator greater than its synchronous value. the difference between the generated power and the power consumed by the local load flows through the single-phase feeder. the power flow control is provided by a three-phase pwm inverter that additionally guarantees the local power quality. a system with good power quality must have sinusoidal and constant amplitude voltages, fixed frequency operation, balanced induction generator voltages and currents, harmonics and reactive power compensation. the paper describes the inverter control strategy, presents design criteria of the controllers, and shows experimental results.
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