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Search Results: 1 - 10 of 556567 matches for " C. M.; Costa "
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The Role of Zinc in Chronic Kidney Disease Patients on Hemodialysis: A Systematic Review  [PDF]
L. C. Neto, M. R. Bacci, L. C. Sverzutt, M. G. Costa, B. C. A. Alves, F. L. Fonseca
Health (Health) , 2016, DOI: 10.4236/health.2016.84036
Abstract: Objective: Zinc has been studied for its antioxidant and anti-inflammatory properties and also for its immune function in end stage renal disease patients. The aim of this review is to clarify whether there is a relationship between zinc levels and ESRD patients in hemodialysis. Methodology: A search through LILACS and MEDLINE database using the keywords “zinc”, “chronic kidney disease” and “hemodialysis” was performed. Articles in English and Portuguese performed in humans with the previous words were selected. Studies with subjects younger than 18 years of age were excluded. Moreover, exclusion criteria included patients with absence of diagnosis of end stage renal disease and not in hemodialysis; patients treated with peritoneal dialysis, absence of abstract available, absence of clear association between zinc deficiency and worse prognosis. Results: The search found a total of 214 articles. A total of 44 publications were selected after appliance of exclusion criteria. Conclusion: Zinc deficiency is highly prevalent, and it not only showed influence on inflammatory and immunological processes, but also interfered with metabolism and other systems. Zinc supplementation was considered positive. In summary, lower zinc levels are related to end stage renal disease patients in hemodialysis and supplementation seems to be a promising approach in such cases.
Female Futsal Players’ Profile and Biochemical Alterations through Intermittent High-Intensity Exercise Training  [PDF]
Camila S. C. da Costa, Alexandre Palma, Cristiana M. Pedrosa, Anna Paola T. R. Pierucci
Food and Nutrition Sciences (FNS) , 2012, DOI: 10.4236/fns.2012.31016
Abstract: The aim of the study was to determine the physical, physiological and nutritionalcharacteristics of female futsal players and selected markers of oxidative stress after their exercise training (Loughborough Intermittent Shuttle Test). Eight health female futsal players (age 21.3 ± 3.2 years, body mass 64.5 ± 5.6 kg, height 169.5 ± 6.5 cm, body mass index 22.45 ± 2.25 kg/m2; mean ± SD) participated in this study. Blood samples were collected before, during and immediately after the exercise for glucose, lactate, ascorbic acid, total plasma antioxidant potential, lipid hydroperoxides, malondialdehyde and creatine kinase concentrations. Female futsal players appeared to meet caloric needs but failed to meet minimum carbohydrate and vitamin A, C and E recommendations. Immediately after the exercise there were an increase in lipid hydroperoxides (ranging from 9.32 ± 1.86 μmol?L–1 to 13.02 ± 1.62 μmol?L–1, p < 0.05), malondialde- hyde (ranging from 2.16 ± 0.45 nmol?L–11 to 3.29 ± 0.62 nmol?L–1, p < 0.05) and creatine kinase (ranging from 118.14 ± 18.21 U.I..L–1 to 185.59 ± 6.96 U.I..L–1, p < 0.05). In parallel, ascorbic acid and total plasma antioxidant potential had a slight decrease during and after exercise. Considering that alterations in oxidative stress parameters associated with inadequate ingestion of nutrients can affect health and performance of game players, further studies are needed to evalu- ate the inclusion of an nutritional education program and extent of biochemical changes through athlete’s recovery pe- riod.
Information and knowledge models supporting brake friction material manufacturing
Costa, C. A.;Luciano, M. A.;
Journal of the Brazilian Society of Mechanical Sciences and Engineering , 2004, DOI: 10.1590/S1678-58782004000100012
Abstract: the product development process usually encompasses a very complex and interdisciplinary environment in which product is seen by different views related with the life-cycle functions. an approach based on information models can provide an integrated view of the product, supporting also product information and knowledge (i&k) reuse acquired in previous development processes. this paper discusses the use of additional information and knowledge models to support the capture and reuse of i&k within a brake system friction material development environment. two information models are proposed: the brake friction material product model, which captures information about a specific product and the friction material design knowledge model, which captures design and manufacturing information and knowledge history generated throughout the time. for the representation of the information models object oriented technology is used and case based reasoning is proposed for supporting the i&k retrieving. at the present, work is being performed on the structure definition of the information and knowledge models. a real case in a brazilian brake lining manufacturer is being used.
Description of the larva of Orthemis schmidti (Odonata, Libellulidae)
Costa, Janira M.;Santos, Tatiana C.;
Iheringia. Série Zoologia , 2009, DOI: 10.1590/S0073-47212009000200002
Abstract: the larva of orthemis schmidti buchholz, 1950 is described and illustrated for the first time based on one specimen from the northeastern region brazil. diagnostic characters which separate this larva from known larvae of other congeners are mentioned, and some notes on the habitat of the species are presented.
Characterization of courtship sounds of species of the subgroup fasciola (Diptera, Drosophilidae, Drosophila repleta group): interspecific and interpopulational analyses
COSTA, C. T. A.;SENE, F. M.;
Brazilian Journal of Biology , 2002, DOI: 10.1590/S1519-69842002000400003
Abstract: the aim of this work was to characterize the male courtship song pattern of various species of the fasciola subgroup and to determine the level of variation both within and among species. the parameters analyzed were intrapulse interval (pi), interpulse interval (ipi), and intrapulse frequency (if). six different species were analyzed: d. coroica (three populations), d. ellisoni, d. fascioloides, d. moju, d. onca, and d. rosinae (one population each). there were significant differences among the six species for these three courtship song parameters. the ipi was the most variable parameter among these species, suggesting that this parameter is important for female discrimination. four different hypotheses could explain this variation: 1. different selection pressures with absence of flow gene; 2. intraspecific sexual selection; 3. sympatric effects on song evolution; and 4. genetic drift. the pi was the only parameter that was significantly different among the three population of d. coroica. low variability among populations within the same species was already observed for other subgroups and could be explained by the following hypotheses: strong selection acting on the song parameters, gene flow, or recent colonization from a common source. additional studies of the courtship song of other species of the fasciola subgroup, as well as for other subgroups of the repleta group, and studies, using molecular makers, that focus on the genetic basis of the differences among these species in courtship song would allow us to evaluate the association of courtship song and sexual isolation in these species, and would also help us to understand the evolution of these behavioural differences.
Estudo morfológico da larva de último ínstar de Miathyria simplex (Rambur) (Odonata, Libellulidae)
Costa, J. M.;Assis, C. V. de;
Revista Brasileira de Zoologia , 1992, DOI: 10.1590/S0101-81751992000200020
Abstract: the larva of miathyria simplex (rambur, 1842) is described, illustrated and compared to that of m. marcella (selys, 1857). a key for identification of the south american libellulidae larvae, wich show dorsal spines on abdominal segments iii to viii, is presented.
Benthic macroinvertebrate based indices for assessing the ecological status of freshwaters on oceanic islands
PEDRO M. RAPOSEIRO,Ana C. Costa
Arquipélago : Life and Marine Sciences , 2009,
Abstract: Following the Water Framework Directive (2000/60/EC), macroinvertebrates are required biological elements for monitoring European aquatic ecosystems. Several efforts have been made towards establishing a biomonitoring programme for the Azores freshwater systems using benthic macroinvertebrates. However, little was previously known concerning Azorean freshwater macroinvertebrate fauna. Data from a major ongoing survey of macroinvertebrate freshwater fauna for two islands are presented and the use ofmacroinvertebrates as water quality indicators for the Azorean streams is evaluated. The upper, middle and lower reaches of streams longer than 10 km from S o Miguel (10) and Santa Maria (1) were surveyed (a total of 33 samples). A total of 21 taxa were collected;Diptera, in particular chironomidae, were dominant; chironomids were collected from all sampling sites. The Azorean lotic fauna is characterized by low levels of abundance and the absence of macroinvertebrate groups commonly associated with continental systems.Traditional biotic indices, used to classify ecological quality, yielded poor to bad classifications despite little or no environmental impacts at the sampling sites. The paucityof macroinvertebrate fauna is probably due to the result of geological and physicochemical processes, the oceanic character of the islands, their volcanic origin, small size and geological youth and climate related factors such as seasonal peaks in rainfall. Considering these constraints, we demonstrate that watershed age plays a determinant role in shaping Azorean macroinvertebrate freshwater communities which can confound the water quality classification via the use of traditional biotic indices.
Efficacy of opioid switching in asian 51-year-old man with a phenomenon of pharmacokinetics tolerance: case report
C. Costa,I. Paladina,M. Del Zompo
Pathos : Trimestrale di Algologia , 2012,
Abstract: Opioid switching is a therapeutic procedure used in pain management as a method to improve analgesicresponse and/or reduce adverse side effects. The rationale behind opioid substitution is the incomplete crosstolerance between opioid. We report the case of an asian 51-year-old man withcancer pain unresponsive to oxycodone. In this case we hypothesize that the lack of response to oxycodone is linked to a phenomenon of pharmacokinetics tolerance.
Information and knowledge models supporting brake friction material manufacturing
Costa C. A.,Luciano M. A.
Journal of the Brazilian Society of Mechanical Sciences and Engineering , 2004,
Abstract: The product development process usually encompasses a very complex and interdisciplinary environment in which product is seen by different views related with the life-cycle functions. An approach based on information models can provide an integrated view of the product, supporting also product information and knowledge (I&K) reuse acquired in previous development processes. This paper discusses the use of additional information and knowledge models to support the capture and reuse of I&K within a brake system friction material development environment. Two information models are proposed: the Brake Friction Material Product Model, which captures information about a specific product and the Friction Material Design Knowledge Model, which captures design and manufacturing information and knowledge history generated throughout the time. For the representation of the information models object oriented technology is used and Case Based Reasoning is proposed for supporting the I&K retrieving. At the present, work is being performed on the structure definition of the information and knowledge models. A real case in a Brazilian brake lining manufacturer is being used.
Characterization of courtship sounds of species of the subgroup fasciola (Diptera, Drosophilidae, Drosophila repleta group): interspecific and interpopulational analyses
COSTA C. T. A.,SENE F. M.
Brazilian Journal of Biology , 2002,
Abstract: The aim of this work was to characterize the male courtship song pattern of various species of the fasciola subgroup and to determine the level of variation both within and among species. The parameters analyzed were intrapulse interval (PI), interpulse interval (IPI), and intrapulse frequency (IF). Six different species were analyzed: D. coroica (three populations), D. ellisoni, D. fascioloides, D. moju, D. onca, and D. rosinae (one population each). There were significant differences among the six species for these three courtship song parameters. The IPI was the most variable parameter among these species, suggesting that this parameter is important for female discrimination. Four different hypotheses could explain this variation: 1. different selection pressures with absence of flow gene; 2. intraspecific sexual selection; 3. sympatric effects on song evolution; and 4. genetic drift. The PI was the only parameter that was significantly different among the three population of D. coroica. Low variability among populations within the same species was already observed for other subgroups and could be explained by the following hypotheses: strong selection acting on the song parameters, gene flow, or recent colonization from a common source. Additional studies of the courtship song of other species of the fasciola subgroup, as well as for other subgroups of the repleta group, and studies, using molecular makers, that focus on the genetic basis of the differences among these species in courtship song would allow us to evaluate the association of courtship song and sexual isolation in these species, and would also help us to understand the evolution of these behavioural differences.
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