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Search Results: 1 - 10 of 23200 matches for " Eduardo Pessoa "
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Influence of the Freshwater Discharge on the Hydrodynamics of Patos Lagoon, Brazil  [PDF]
Gustavo Pessoa de Barros, Wiliam Correa Marques, Eduardo de Paula Kirinus
International Journal of Geosciences (IJG) , 2014, DOI: 10.4236/ijg.2014.59080

Patos Lagoon is a very dynamic environment presenting hydrodynamic fluctuations from synoptic to decadal timescales. Thus, understanding the processes that determine the long term variability is fundamental for the correct coastal planning and management of this region. The main objective of this study is to understand how the freshwater discharge of the main tributaries controls the estuarine hydrodynamics of the Patos Lagoon, when considering long term timescales. Two numerical simulations were carried out using the TELEMAC3D numerical model, the former using freshwater discharge from 1940 to 1973 year (simulation A), and the second simulation using data between 1974 and 2006 year (simulation B). These two periods were selected because before (after) 1973 year, the annual mean freshwater discharge was lower (higher) than the mean value for the whole period (1080 m3/s). The navigational channel discharge, water level, salinity and current velocity differences between both simulations were analyzed. Ebb conditions prevailed over flood conditions for both simulations, but simulation B presented a higher volume of freshwater exported through the coastal zone. Water level differences demonstrated higher values (0.08 meters) close to the Guaiba River, which is the main tributary of the study region, and lower values were observed near to the Patos Lagoon mouth (0 meters). The most significant differences in the mean bottom and surface salinity were observed in the central zone of the estuary and at the Barra Breakwaters. Simulation A presented higher saline intrusion due to lower freshwater discharge, while simulation B showed an increase in the coastal plume intensity, caused by the higher freshwater discharge. The hydrodynamical simulations demonstrated with precision that the freshwater discharge intensity determine the vertical stratification of the estuary.

Escala de Preferência Musical: constru??o e comprova??o da sua estrutura fatorial
Pimentel, Carlos Eduardo;Gouveia, Valdiney V.;Pessoa, Viviany Silva;
Psico-USF , 2007, DOI: 10.1590/S1413-82712007000200003
Abstract: this study aimed at elaborating and knowing the psychometric parameters of a measure of musical preference among adolescents. participated in the study 480 high school students, most of them female (55.1%) and single (95.9%), with age ranging from 13 to 28 years (m=16.2; sd=1.60). they answered the musical preference scale and demographic questions. the sample was randomically divided into two of equal sizes, searching to know the factor structure of the scale (n1) and than test it (n2). results of the principal components analysis with the first sample indicated a multifactor structure, composed of four components of music styles: mass music, alternative music, refined music, and conventional music, which satisfactory reliabilities indices and accounting more than half of the total variance. a confirmatory factor analysis (ml) was performed with the second sample, testing the previously observed structure. results reazonable support such structure. it was concluded that this is an adequate measure for research purposes, and it is useful when the goal is to know the adolescents musical preference. on the other hand, they were pointed out the limitations of the current study, and presented suggestions to improve the parameters of this measure.
Delirium em pacientes críticos
Pessoa, Renata Fittipaldi;Nácul, Flávio Eduardo;
Revista Brasileira de Terapia Intensiva , 2006, DOI: 10.1590/S0103-507X2006000200013
Abstract: background and objectives: delirium is a frequent finding in the critically ill patient. although it is associated with increased morbidity and mortality, it is often not recognized by intensive care doctors. this review will address the main issues regarding delirium in critically ill patients. contents: definition, incidence, mortality, risk factors, diagnosis, and treatment of delirium in the critically ill. conclusions: deliriumis defined as a disturbance of consciousness, attention, cognition and perception that occurs frequently in critically ill patients. it occurs in as many as 80% of mechanically ventilated icu patients. risk factors for delirium include acute systemic illnesses, older age, pre-existing cognitive impairment, sleep deprivation, and medications with anticholinergic activity. although new assessment tools are available for rapidly and accurately measuring deliriumin critically ill patients, healthcare professionals still do not regularly monitor for this condition. in recent years, the emphasis in the approach to delirium has shifted to systematic screening and prevention. haloperidol remains the standard treatment for delirium, but there is some evidence for the efficacy of risperidone.
Incidence of preoperative high blood pressure in cataract surgery among hypertensive and normotensive patients
Lira Rodrigo Pessoa,Nascimento Maurício,Arieta Carlos Eduardo,Duarte Luis Eduardo
Indian Journal of Ophthalmology , 2010,
Abstract: Incidence of preoperative rise in blood pressure (BP) in cataract surgery among hypertensive and normotensive patients. Objective: To study the incidence of preoperative rise in BP in cataract surgery among normotensive individuals and hypertensive patients with historic good BP control in a population without other major chronic diseases. Settings: Ophthalmology Service of a University Hospital. Materials and Methods: A prospective study with 822 patients older than 40 years of age, with cataract surgery indication, and without major chronic diseases other than hypertension. The patients were divided in two groups: hypertensive and normotensive. Preoperative data, physical exams and medical adverse events were recorded in an evaluation questionnaire. Results: The sample included 427 normotensive (52%) and 395 hypertensive patients (48%). The two groups had similar proportions of operations that were cancelled and not subsequently rescheduled, 2% (eight patients) in each group. The incidence of preoperative rise in BP was 3.7% in the normotensive group and 10.9% in the hypertensive group (P < 0.001). Conclusion: Hypertensive patients with historic good BP control and without other major co-morbidities present a larger incidence of preoperative rise in BP than normotensive individuals in cataract surgery.
Exploring the Project Potential of Marine Current Turbines: A Case Study in the Southern Brazilian Shelf Region  [PDF]
Juliana Tavora Bertazo Pereira, Eduardo de Paula Kirinus, Wiliam Correa Marques, Tiago Borges Ribeiro Gandra, Gustavo Pessoa de Barros, Helena Barreto Matzenauer
International Journal of Geosciences (IJG) , 2014, DOI: 10.4236/ijg.2014.513126
Abstract: The application of marine current turbines for electricity generation could offer a distinct advantage over other renewable energy sources due to the regular and predictable nature of this resource. This paper details the application of Analytical Hierarchy Process (AHP) as a possible tool for decision makers to better understand the environment and the impacts of the marine current turbines. The best areas for generating energy from the currents were found using a tridimensional model (TELEMAC3D). In addition to applying the energy conversion module, these regions were also evaluated for energy production, which was then applied to the AHP. Several databases (Transmission and Transport, Socioeconomic, Conservation Units, Endangered Species and Geological Information) were compared to minimize decision deviation. The results showed the viability of the northern region of the Southern Brazilian Shelf (SBS) as a possible area to harvest energy from the currents, as much of the studied region was limited by human activities in the coastal zone and sensitive biological resources.
Comparison of shape analysis methods for Guinardia citricarpa ascospore characterization
Pazoti,Mário Augusto; Garcia,Rogério Eduardo; Cruz Pessoa,José Dalton; Martinez Bruno,Odemir;
Electronic Journal of Biotechnology , 2005,
Abstract: among the diseases affecting the commercial citrus production, the citrus black spot (cbs) is considered to cause substantial losses. the analyses of particles in suspension in the orchards and collected into a disc have been applied as a preventive action trying to identify the presence of fungus spores before symptom appearance. in this paper, we show the results of several shape analysis methods applied to the fungus, the first step to the aimed computer aided vision system, capable to assist the identification process. experiments and comparative results among the methods are presented in this paper, showing that better results were obtained applying the curvature method
Condutas desviantes e tra?os de personalidade: testagem de um modelo causal
Vasconcelos, Tatiana Cristina;Gouveia, Valdiney Veloso;Pimentel, Carlos Eduardo;Pessoa, Viviany Silva;
Estudos de Psicologia (Campinas) , 2008, DOI: 10.1590/S0103-166X2008000100006
Abstract: the main purpose of this study was to test the adequacy of a causal model to explain socially deviant behavior (i.e. antisocial and criminal behavior), taking into account the contribution of personality traits (neuroticism, extraversion, and sensation seeking). to this end, 755 high school and undergraduate students participated, most of them female (50.3%) and from private schools/universities (53%), with ages ranging from 16 to 26 (average=20.1; standard deviation=3.12). they answered a questionnaire in which three different measures were incorporated: big five inventory, sensation seeking scale, and antisocial and criminal behavior questionnaire. the main results demonstrated that the traits of neuroticism and sensation-seeking satisfactorily explained the antisocial behavior, and these directly predicated criminal behavior. it was confirmed that the personality traits, especially sensation seeking, are helpful in the understanding of socially deviant behavior. however, the need for further studies incorporating other variables and contexts should be emphasized.
Tendência da mortalidade por diabetes melito no Brasil: 1950 a 2000
Cesse, Eduarda ?ngela Pessoa;Carvalho, Eduardo Freese de;Souza, Wayner Vieira de;Luna, Carlos Feitosa;
Arquivos Brasileiros de Endocrinologia & Metabologia , 2009, DOI: 10.1590/S0004-27302009000600011
Abstract: objective: to analyze mortality trend by diabetes mellitus in brazilian capitals. methods: it was analyzed mortality temporal trend by diabetes mellitus in brazilian capitals, from the death data of the statistic directory of ibge and the system of mortality information of the ministry of health, in the period from 1950 to 2000. results: it was observed the growth of proportional mortality and the standard mortality ratio by diabetes in most of the capitals. s?o paulo (sp) outstood for presenting expressive and constant proportional mortalities along the series, particularly from 1960. as to the standard mortality ratio in this capital, as well as in belo horizonte (mg), where it was noticed the oscillation of these indicators tending to decrease in the last years, it was not observed significant trends. conclusions: mortality trend by diabetes is increasing in most of the capitals, with the exception of s?o paulo and belo horizonte, which have shown different patterns from the other capitals.
Tendência da mortalidade por doen?as do aparelho circulatório no Brasil: 1950 a 2000
Cesse, Eduarda ?ngela Pessoa;Carvalho, Eduardo Freese de;Souza, Wayner Vieira de;Luna, Carlos Feitosa;
Arquivos Brasileiros de Cardiologia , 2009, DOI: 10.1590/S0066-782X2009001100009
Abstract: background: the circulatory system diseases (cad), one of the most important current health problems, have started to show a declining trend in mortality in several countries, although they are still proportionally the number one regarding the statistics of morbimortality. objective: to analyze the mortality trend due to cad in brazilian capital cities, during the period of 1950 to 2000. methods: temporal series study, of standardized mortality ratios by cad. we used secondary data on death from the statistical annual reports from ibge (the brazilian institute of geography and statistics) and from the mortality information system. we carried out a linear trend analysis of the standardized mortality ratios due to cad in the brazilian capital cities that presented complete mortality series, considering the census years during the study period (1950 to 2000). results: although proportionally the cad represent the main cause of death in the brazilian population, as well as presenting a proportional increase during the period of analysis of this study, the risk of death, represented by the standardized mortality ratios, have been decreasing, particularly from the eighties onward. it is noteworthy the fact that fortaleza, salvador, belo horizonte, rio de janeiro and s?o paulo presented elevated standardized mortality ratios, however with a decreasing trend (p<0.05 and p<0.10), since the start of the analyzed period. conclusion: the behavior of the risk of death due to cad suggests that this group of diseases is the first to be established, following the increase in industrialization observed from the thirties onward and after the second world war in brazil, as it occurred in sao paulo and rio de janeiro, cities that historically experienced a process of development and urbanization earlier and at a higher extent, when compared to the other capital cities.
Appraisal of the retention of the knowledge for ophthalmology specialists of the Brazilian Ophthalmology Council
Limeira-Soares, Paulo Henrique;Lira, Rodrigo Pessoa Cavalcanti;Paccola, Marcelo;Arieta, Carlos Eduardo Leite;
Arquivos Brasileiros de Oftalmologia , 2006, DOI: 10.1590/S0004-27492006000100010
Abstract: purpose: to determine the retention of knowledge along the years after certification of physicians as ophthalmology specialists. methods: the physicians, former ophthalmology residents, were selected at the department of ophthalmology, state university of campinas, s?o paulo, brazil, and randomly allocated to three groups of seven individuals, according to the time as specialists. group 1 consisted of one-year specialists, group 2 of five-year specialists and group 3 of ten-year specialists. each participant answered a test with twenty-five multiple choice randomly selected questions, based on the national certificate tests applied by the brazilian ophthalmology council between 1994 and 2003. each question scored four points. results: the mean age of groups 1, 2 and 3 was 27, 30 and 36 years, respectively. a preponderance of males was found in all groups. group 1 achieved the highest score, average of 88, group 2 achieved 77, and group 3 achieved the lowest, average of 64 (p<0,05). conclusion: loss of knowledge retention amongst specialists of the brazilian ophthalmology council, has been observed along the years after the certification.
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