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Search Results: 1 - 10 of 531806 matches for " D. M.;Sousa "
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Fecal androgen levels in common marmoset (Callithrix jacchus) males living in captive family groups
Castro, D.C.;Sousa, M.B.C.;
Brazilian Journal of Medical and Biological Research , 2005, DOI: 10.1590/S0100-879X2005000100011
Abstract: in captive common marmoset groups, the reproductive inhibition observed in subordinate female seems to be a result of olfactory, visual and behavioral cues from the dominant female. however, few studies have examined the relationship among adult males living in the same social group. these studies have shown that reproductive failure among peer males seems to be based on hormonal and behavioral mechanisms. new insights on sexual strategies in primates have been shown using fecal steroids, but so far no information is available for common marmoset males. in the present study, we evaluated the influence of light-dark cycle, age and reproductive condition on the profile of fecal androgens in males living in the same family group. feces were collected from six fathers and six sons for androgen determination during the light phase of the 24-h cycle for eight days randomly distributed over a 4-week period. androgen levels were determined by enzyme immunoassay technique. adult sons showed higher androgen levels (166.97 ± 22.95 ng/g) than fathers (80.69 ± 44.38 ng/g) and juveniles (49.06 ± 23.15 ng/g; p < 0.05). no diurnal variation (p > 0.05) in fecal androgen profile was observed in adults or juveniles. no indication of androgen-mediated social competition between fathers and adult sons was demonstrable. these results provide basic information on fecal androgen profile useful to investigate the socioendocrinology of free-ranging common marmoset males and verify that, in contrast to daughters, the reproductive suppression of sons is not based on physiological inhibition of their gonads.
Robust optimization methodologies for water supply systems design
J. Marques, M. C. Cunha, J. Sousa,D. Savi
Drinking Water Engineering and Science (DWES) & Discussions (DWESD) , 2012, DOI: 10.5194/dwes-5-31-2012
Abstract: Water supply systems (WSSs) are vital infrastructures for the well-being of people today. To achieve good customer satisfaction the water supply service must always be able to meet people's needs, in terms of both quantity and quality. But unpredictable extreme conditions can cause severe damage to WSSs and lead to poorer levels of service or even to their failure. Operators dealing with a system's day-to-day operation know that events like burst water mains can compromise the functioning of all or part of a system. To increase a system's reliability, therefore, designs should take into account operating conditions other than normal ones. Recent approaches based on robust optimization can be used to solve optimization problems which involve uncertainty and can find designs which are able to cope with a range of operating conditions. This paper presents a robust optimization model for the optimal design of water supply systems operating under different circumstances. The model presented here uses a hydraulic simulator linked to an optimizer based on a simulated annealing heuristic. The results show that robustness can be included in several ways for varying levels reliability and that it leads to more reliable designs for only small cost increases.
Relationship between body mass index with dietary fiber intake and skinfolds: differences among bodybuilders who train during morning and nocturne period Relación entre el índice de masa corporal con la ingesta de fibra dietética y pliegues de la piel: las diferencias entre los culturistas que se entrenan durante el período de la ma ana y nocturno
J. C. V. Monteiro,G. D. Pimentel,M. V. Sousa
Nutrición Hospitalaria , 2012, DOI: 10.3305/nh.2012.27.3.5578
Abstract: Background: The prevalence of overweight individuals has increased in recent years. Moreover, the importance of a healthy diet is associated with the practice of physical activity and attempt to verify the achievement of physical exercise influences on food choice. However, it relationship between food intake and physical activity have not been studied. Aim: To evaluate if the period in which the trainings are conducted, morning and nocturne, interfere qualitatively and quantitatively in food consumption as well as verify possible associations between anthropometric profiles and dietary habits. Methods: We collected data from 33 adult volunteers, between men and women, practitioners of bodybuilding. Results: A total of 33 volunteers were interviewed (18 (54.5%) were men and 15 (45.5%) were women). Regarding anthropometric data, it turns out that that the volunteers of the two periods had similar characteristics, differentiating only weight. The consumption of nutritional supplements was observed in 30.77% of the practitioners in the morning period vs. 35% for the nocturne. Considering macronutrient intake, there was a significant difference in the consumption of protein between the periods. The consumption during nocturne period was greater (126 ± 5% of the daily requirement) than the morning period (115.7 ± 2%). As for micro-nutrients, calcium intake was greater among men when compared to women. There was a positive correlation between the BMI, and arm circumference for practitioners of the morning period. Conclusion: This study show that the practitioners who train in the morning have quietly better eating habits than those in the nocturne period, however both are inappropriate. Antecedentes: La prevalencia de individuos con sobrepeso ha aumentado en los últimos a os. Además, la importancia de una dieta saludable se asocia con la práctica de actividad física y los intentos de lograr la realización de la esta actividad influyen en la elección de la dieta. Sin embargo, la relación entre la ingesta dietética y la actividad física no se ha estudiado. Objetivo: Evaluar si el periodo en que se realiza el entrenamiento, diurno y nocturno, interfiere cualitativa y cuantitativamente en el consumo de alimentos, así como comprobar posibles asociaciones entre los perfiles antropométricos y los hábitos dietéticos. Métodos: Recogimos los datos de 33 adultos voluntarios, hombres y mujeres, culturistas. Resultados: se entrevistó a un total de 33 voluntarios (18 (54,5%) hombres y 15 (45,5%) mujeres). Con respecto a los datos antropométricos, los voluntarios de ambos p
Demographic Differences of Adults with Diabetes Mellitus - A Cross-Sectional Study
Valmi D. Sousa,Jaclene A Zauszniewski,Carol M Musil
Online Brazilian Journal of Nursing , 2006,
Abstract: The purpose of this study was to examine differences in scores on diabetes knowledge, social support, self-efficacy, self-care agency, self-care management, and glycemic control of individuals who were males or females, younger or older, with less or more education, with type 1 or type 2 diabetes, and with a shorter or longer duration of diabetes. A descriptive, comparative, cross-sectional design was used in the study, which was a secondary analysis of data from a larger study. The sample for this analysis included 141 adults attending an outpatient diabetes care center in the Southern United States. The instruments consisted of a demographic questionnaire and standard tools with established psychometric properties. Data analysis consisted of t-tests. The results show that there were significant mean differences between individuals who (a) were younger and older in regard to diabetes knowledge, self-care agency, and diabetes self-care management, (b) had less or more than a high school education in regard to diabetes knowledge, and (c) had type 1 or type 2 diabetes in regard to diabetes knowledge, self-care agency, and diabetes self-care management. In conclusion, specific demographics variables differ in scores on diabetes knowledge, self-care agency, and self-care activities, which are some of the fundamental factors to achieve glycemic control and prevent disease-related complications. These variables should be considered when designing and implementing a diabetes educational program.
Robust optimization methodologies for water supply systems design
J. Marques,M. C. Cunha,J. Sousa,D. Savi?
Drinking Water Engineering and Science Discussions , 2012, DOI: 10.5194/dwesd-5-173-2012
Abstract: Water supply systems (WSSs) are vital infrastructures for the well-being of people today. To achieve good customer satisfaction the water supply service must always be able to meet people's needs, in terms of both quantity and quality. But unpredictable extreme conditions can cause severe damage to WSSs and lead to poorer levels of service or even to their failure. Operators dealing with a system's day-to-day operation know that events like burst water mains can compromise the functioning of all or part of a system. To increase a system's reliability, therefore, designs should take into account operating conditions other than normal ones. Recent methods based on robust optimization can be used to solve optimization problems which involve uncertainty and can find designs which are able to cope with a range of operating conditions. This paper presents a robust optimization model for the optimal design of water supply systems operating under different circumstances. The method presented here uses a hydraulic simulator linked to an optimizer based on a simulated annealing heuristic. The results show that robustness can be included in several ways for varying levels reliability and that it leads to more reliable designs for only small cost increases.
Fecal androgen levels in common marmoset (Callithrix jacchus) males living in captive family groups
Castro D.C.,Sousa M.B.C.
Brazilian Journal of Medical and Biological Research , 2005,
Abstract: In captive common marmoset groups, the reproductive inhibition observed in subordinate female seems to be a result of olfactory, visual and behavioral cues from the dominant female. However, few studies have examined the relationship among adult males living in the same social group. These studies have shown that reproductive failure among peer males seems to be based on hormonal and behavioral mechanisms. New insights on sexual strategies in primates have been shown using fecal steroids, but so far no information is available for common marmoset males. In the present study, we evaluated the influence of light-dark cycle, age and reproductive condition on the profile of fecal androgens in males living in the same family group. Feces were collected from six fathers and six sons for androgen determination during the light phase of the 24-h cycle for eight days randomly distributed over a 4-week period. Androgen levels were determined by enzyme immunoassay technique. Adult sons showed higher androgen levels (166.97 ± 22.95 ng/g) than fathers (80.69 ± 44.38 ng/g) and juveniles (49.06 ± 23.15 ng/g; P < 0.05). No diurnal variation (P > 0.05) in fecal androgen profile was observed in adults or juveniles. No indication of androgen-mediated social competition between fathers and adult sons was demonstrable. These results provide basic information on fecal androgen profile useful to investigate the socioendocrinology of free-ranging common marmoset males and verify that, in contrast to daughters, the reproductive suppression of sons is not based on physiological inhibition of their gonads.
Space-time Torsion and Neutrino Oscillations in Vacuum
A. A. Sousa,D. M. Oliveira,R. B. Pereira
Physics , 2009,
Abstract: The objective of this study is to verify the consistency of the prescription of alternative minimum coupling (connection) proposed by the Teleparallel Equivalent to General Relativity (TEGR) for the Dirac equation. With this aim, we studied the problem of neutrino oscillations in Weitzenbock space-time in the Schwarzschild metric. In particular, we calculate the phase dynamics of neutrinos. The relation of spin of the neutrino with the space-time torsion is clarified through the determination of the phase differences between spin eigenstates of the neutrinos.
Prototyping: Major Advance in Surgical Planning and Customizing Prostheses in Patients with Bone Tumors of the Head and Neck  [PDF]
Terence P. Farias, Fernando Luiz Dias, Bruno Albuquerque Sousa, Mário Sérgio Galv?o, Dênio Bispo, Ana Carolina Pastl
International Journal of Clinical Medicine (IJCM) , 2013, DOI: 10.4236/ijcm.2013.47A1001
Abstract: Major resections of bone tumors of the head and neck, owing to their small dimensions and their proximity to the organs in this region, cause important functional and aesthetic problems that significantly compromise patients’ quality of life. Therefore, therapeutic planning should always extend beyond the resection to include functional and aesthetic reconstruction, preferably immediately. Microsurgical reconstruction represents a significant advance, but has not yet been perfected. Rapid prototyping (RP) comes as a new technology for the purpose of assisting the surgeon in the visual and tactile aspects of surgery, providing diagnostic accuracy and increasing the success of surgical planning. The authors demonstrate the technological advances in the manufacture of customized mandibular prostheses with the assistance of RP and practical applications of these methods.
Observation of electromagnon excitations in the BiFe0$_3$ spiral magnet
M. Cazayous,Y. Gallais,A. Sacuto,R. De Sousa,D. Lebeugle,D. Colson
Physics , 2007, DOI: 10.1103/PhysRevLett.101.037601
Abstract: Recently, oxide multiferroics have attracted much attention due to their large magnetoelectric effect which allows the tuning of magnetic properties with electric field and vice versa and open new venues for future spintronic applications such as multiple-state memory devices with dual magnetic and electric control. BiFeO$_3$ (BFO) belongs to this new class of materials and shows both ferroelectric and antiferromagnetic orders at room temperature with a large electric polarizationassociated with a cycloidal spiral magnetic ordering. The incommensurate magnetic order induces magnon zone folding and allows investigations by optical probes of unusual spin waves which couples to optical phonons, the so called "`electromagnons"'. Here, we unravel for the first time the electromagnon spectra of BFO by means low energy inelastic light scattering technique. We show the existence of two species of electromagnons corresponding to spin wave excitations in and out of the cycloidal plane. The present observations present an unique opportunity to study the interplay between ferroelectric and magnetic orders.
Eficácia e seguran?a do infliximab no tratamento da doen?a de crohn: experiência de um centro português
Sousa,H. T.; Portela,F.; Ferreira,M.; Andrade,P.; Leit?o,M. C.; Freitas,D.;
Jornal Português de Gastrenterologia , 2006,
Abstract: aims: evaluation of efficacy and safety of infliximab treatment in crohn's disease (cd), performed at our department. methods: medical records of patients with cd followed at our department and treated with infliximab until 2004 were reviewed. results: fifty-four (18,7%) patients with cd were treated with infliximab. fifty-two patients were studied, with a 8,5 (1-28) year dc on average. indications for treatment were inflammatory luminal disease in 24 (46,2%) patients, active fistulas in 22 (42,3%) and both in 6 (11,5%). each patient received 4,3 (1-24) infusions, on average, for a total of 226 infusions. on starting infliximab, 84,6% of patients were also on imunossupressive treatment. adverse events occurred in 19 (36,5%), being serious in 9 (17,3%). in about 2/3 of patients responded to the induction scheme and 3/4 of patients on maintenance uphold a positive response. at the end of follow-up, 28 (53,0%) patients sustained a positive response, with 13 (25,0%) in complete remission. conclusions: half of the patients clinically and steadily improved, with half of these in complete remission. adverse events occurred in about 1/3 of patients, which warranted discontinuation of treatment in less than 10%.
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