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Search Results: 1 - 10 of 249607 matches for " Pedro L. Oliveira "
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Discursos de usuários de um centro de aten??o psicossocial-CAPS e de seus familiares
Cirilo, Lívia Sales;Oliveira Filho, Pedro de;
Psicologia: Ciência e Profiss?o , 2008, DOI: 10.1590/S1414-98932008000200008
Abstract: this paper deals with the construction of the mental disturbance in the speech of a psychosocial attendance center patients and their family members. it is a qualitative research that has a theoretical methodological approach related to the social discursive psychology. 15 patients of a caps - psychological attendance center of campina grande have been interviewed as well as 15 family members. along the elaborations about the determinant causes of the mental disease have been detected biological, socioeconomic, psychosocial, psychological and supernatural causes. besides, in the discursive elaborations about the symptoms and signals of the mental disease the way it shows up, predominated descriptions that denote that the mental patient is not seen as a person capable of independency, but as a person who’s not able to think, a person whose main characteristics are the lack of control and the criminal tendency. that means that the discourses describe a mental patient with the same terms found in the psychiatric speech used to justify the madhouse structure, discourses that reproduce the stereotype about madness that prevails in the social imaginary.
Experience with the Open Source based implementation for ATLAS Conditions Data Management System
A. Amorim,J. Lima,C. Oliveira,L. Pedro,N. Barros
Computer Science , 2003,
Abstract: Conditions Data in high energy physics experiments is frequently seen as every data needed for reconstruction besides the event data itself. This includes all sorts of slowly evolving data like detector alignment, calibration and robustness, and data from detector control system. Also, every Conditions Data Object is associated with a time interval of validity and a version. Besides that, quite often is useful to tag collections of Conditions Data Objects altogether. These issues have already been investigated and a data model has been proposed and used for different implementations based in commercial DBMSs, both at CERN and for the BaBar experiment. The special case of the ATLAS complex trigger that requires online access to calibration and alignment data poses new challenges that have to be met using a flexible and customizable solution more in the line of Open Source components. Motivated by the ATLAS challenges we have developed an alternative implementation, based in an Open Source RDBMS. Several issues were investigated land will be described in this paper: -The best way to map the conditions data model into the relational database concept considering what are foreseen as the most frequent queries. -The clustering model best suited to address the scalability problem. -Extensive tests were performed and will be described. The very promising results from these tests are attracting the attention from the HEP community and driving further developments.
Compatibility between the entomopathogenic fungus Beauveria bassiana and insecticides used in coffee plantations
Oliveira, Carolina Natali de;Neves, Pedro Manuel Oliveira Janeiro;Kawazoe, Lídio Sueki;
Scientia Agricola , 2003, DOI: 10.1590/S0103-90162003000400009
Abstract: microbial control in integrated pest management (ipm) programs of coffee plantations is an important factor for the reduction of pest population densities. the use of selective pesticides can be associated with entomopathogens, increasing the efficiency of the control and reducing the use of required insecticides. the in vitro fungitoxic effect of insecticide formulations of thiamethoxam, cyfluthrin, deltamethrin, alpha-cypermethrin, triazophos, chlorpyrifos, fenpropathrin and endosulfan and beauveria bassiana (cg 425 strain) was evaluated at three concentrations (fr = average field recommendation; 0.5 ′ fr and 2 ′ fr). effects of these products on conidia germination, vegetative growth and sporulation were compared. only five insecticides, at the fr concentration, promoted conidia viability higher than 60%. viability should be considered the most important factor to be evaluated since it is the first step of the infection process. the insecticide formulations of alpha-cypermethrin, thiamethoxam and cyfluthrin caused the lower inhibition level on conidia germination at the two lower concentrations, with no difference in relation to the control. with respect to vegetative growth analysis, thiamethoxam at the two lower concentrations was not found to cause radial growth inhibition. thiamethoxam caused the smallest inhibition level with regard to conidia production. the use of alpha-cypermethrin and thiamethoxam formulations in coffee ipm programs for a b. bassiana inoculum conservation strategy are recommended, since these products were compatible with the entomopathogenic fungus beauveria bassiana (cg 425), an important natural control agent of the coffee berry borer, hypothenemus hampei.
Aspectos epidemiológicos e clínicos do escorpionismo na regi o de Santarém, Estado do Pará, Brasil
Pardal Pedro Pereira de Oliveira,Castro Lívia Correa,Jennings Erik,Pardal Joseana Silva de Oliveira
Revista da Sociedade Brasileira de Medicina Tropical , 2003,
Abstract:
Compatibility between the entomopathogenic fungus Beauveria bassiana and insecticides used in coffee plantations
Oliveira Carolina Natali de,Neves Pedro Manuel Oliveira Janeiro,Kawazoe Lídio Sueki
Scientia Agricola , 2003,
Abstract: Microbial control in integrated pest management (IPM) programs of coffee plantations is an important factor for the reduction of pest population densities. The use of selective pesticides can be associated with entomopathogens, increasing the efficiency of the control and reducing the use of required insecticides. The in vitro fungitoxic effect of insecticide formulations of Thiamethoxam, Cyfluthrin, Deltamethrin, Alpha-Cypermethrin, Triazophos, Chlorpyrifos, Fenpropathrin and Endosulfan and Beauveria bassiana (CG 425 strain) was evaluated at three concentrations (FR = average field recommendation; 0.5 ′ FR and 2 ′ FR). Effects of these products on conidia germination, vegetative growth and sporulation were compared. Only five insecticides, at the FR concentration, promoted conidia viability higher than 60%. Viability should be considered the most important factor to be evaluated since it is the first step of the infection process. The insecticide formulations of Alpha-Cypermethrin, Thiamethoxam and Cyfluthrin caused the lower inhibition level on conidia germination at the two lower concentrations, with no difference in relation to the control. With respect to vegetative growth analysis, Thiamethoxam at the two lower concentrations was not found to cause radial growth inhibition. Thiamethoxam caused the smallest inhibition level with regard to conidia production. The use of Alpha-Cypermethrin and Thiamethoxam formulations in coffee IPM programs for a B. bassiana inoculum conservation strategy are recommended, since these products were compatible with the entomopathogenic fungus Beauveria bassiana (CG 425), an important natural control agent of the coffee berry borer, Hypothenemus hampei.
Mitochondrial Reactive Oxygen Species Modulate Mosquito Susceptibility to Plasmodium Infection
Renata L. S. Gon?alves, Jose Henrique M. Oliveira, Giselle A. Oliveira, John F. Andersen, Marcus F. Oliveira, Pedro L. Oliveira, Carolina Barillas-Mury
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0041083
Abstract: Background Mitochondria perform multiple roles in cell biology, acting as the site of aerobic energy-transducing pathways and as an important source of reactive oxygen species (ROS) that modulate redox metabolism. Methodology/Principal Findings We demonstrate that a novel member of the mitochondrial transporter protein family, Anopheles gambiae mitochondrial carrier 1 (AgMC1), is required to maintain mitochondrial membrane potential in mosquito midgut cells and modulates epithelial responses to Plasmodium infection. AgMC1 silencing reduces mitochondrial membrane potential, resulting in increased proton-leak and uncoupling of oxidative phosphorylation. These metabolic changes reduce midgut ROS generation and increase A. gambiae susceptibility to Plasmodium infection. Conclusion We provide direct experimental evidence indicating that ROS derived from mitochondria can modulate mosquito epithelial responses to Plasmodium infection.
Relaxa??es convexas de convergência garantida para o projeto de controladores para sistemas nebulosos de Takagi-Sugeno
Montagner, Vinícius F.;Oliveira, Ricardo C. L. F.;Peres, Pedro L. D.;
Sba: Controle & Automa??o Sociedade Brasileira de Automatica , 2010, DOI: 10.1590/S0103-17592010000100007
Abstract: this paper provides convex conditions with certificates of convergence for the design of state feedback controllers that quadratically stabilize and also ensure optimal h2 and h∞ performances under quadratic stability for takagi-sugeno continuous-time fuzzy systems. the proposed conditions are formulated as parameter-dependent linear matrix inequalities (lmis) that have extra variables from finsler's lemma and parameters belonging to the unit simplex. the fuzzy control law is written as a state feedback gain that is a homogeneous polynomial of degree g, encompassing the parallel distributed compensator as a special case when g = 1. algebraic properties of the system parameters and recent results of positive polynomials are used to construct lmi relaxations which, differently from most relaxations in the literature, asymptotically converge to a solution whenever such solution exists. due to the degree of freedom obtained with the extra variables, the conditions presented in the paper are an improvement over earlier results based on pólya's theorem and can be viewed as an alternative to the use of techniques based on the relaxation of quadratic forms. the numerical efficiency in terms of precision and computational effort is demonstrated by means of comparisons with other methods from the literature.
Condi??es LMI para estabilidade robusta de politopos de matrizes polinomiais
Oliveira, Paulo J. de;Oliveira, Ricardo C. L. F.;Leite, Valter J. S.;Peres, Pedro L. D.;
Sba: Controle & Automa??o Sociedade Brasileira de Automatica , 2004, DOI: 10.1590/S0103-17592004000400003
Abstract: sufficient conditions for checking the robust stability of a polytope of polynomial matrices are proposed in this paper. simple feasibility tests performed in a convex set of linear matrix inequalities defined at the vertices of the polytope yield sufficient conditions for the robust stability of the entire domain. both continuous-time (left half-plane) and discrete-time stability (unit disk) are investigated. improved sufficient conditions are also presented, containing the previous ones as special cases, providing an efficient numerical method for the robust stability analysis of polytopes of polynomial matrices. numerical comparisons with quadratic stability and with results obtained from other recent methods in the literature show that the proposed conditions provide less conservative evaluations.
Modelo experimental de esplenectomia laparoscópica em ratos
Costa, Vanessa Alves;Oliveira, Fabrício Mascarenhas de;Oliveira Jr, Lúcio Couto de;Carreiro, Mario Castro;Guimar?es, Pedro;
Acta Cirurgica Brasileira , 2003, DOI: 10.1590/S0102-86502003000600013
Abstract: purpose: to describe a model of laparoscopic esplenectomy in rats. methods: thirty-five male rats rattus norvegicus albinus wistar weighing 250 +/- 50 g were used in this study. the animals were insufflated with pco2 of 7 mmhg through a veress needle. after the pneumoperitoneum, two 5 mm and a 11 mm trocars were passed through the abdominal wall, so as to form a triangular geometrical figure. the spleen was approached directly by dissection of the gastrosplenic ligament. hilar vessels were blunty dissected close to the spleen using maryland and hook. a bag was then introduced into the abdominal cavity and the spleen slipped inside. the organ could be removed through a port of site. results: one animal (2,86%) died at the anaesthetic induction. after an eight-day observation period, 30 animals survived (85,7%) and four (11,42%) died immediately after the surgery. in relation to complications, nine rats showed adhesions in left upper quadrant. conclusions: this laparoscopic splenectomy is feasible and it is an excellent training model. besides low cost and easy availability, the rat model requires less financial efforts.
Modelo experimental de hepatectomia parcial laparoscópica em ratos
Oliveira, Fabrício Mascarenhas de;Oliveira Jr, Lúcio Couto de;Costa, Vanessa Alves;Carreiro, Mario Castro;Guimar?es, Pedro;
Acta Cirurgica Brasileira , 2003, DOI: 10.1590/S0102-86502003000300015
Abstract: purpose: to describe a model of laparoscopic partial hepatectomy in rats. methods: 35 male rats rattus norvegicus albinus wistar weighing 250 +/- 50 g were used in this study. the animals were anaesthetised with ketamin and xilasin and insufflated with pco2 of 7 mmhg through a veress needle. after the pneumoperitoneum, two 5 mm and a 11 mm trocars were passed through the abdominal wall, so as to form a triangular geometrical figure. the ligature of three hepatic lobes (left, median left and median right) was done with endoloop and the electrocoagulation of hemorrhagic spots with the hook. the animals were sacrificed after an eight-day observation period. results: three animals (8,6%) died at the anaesthetic induction. after an eight-day observation period, 30 animals survived (85,7%) and only 2 (5,7%) died immediately after the surgery. in relation to complications, granuloma was observed in 54,3% (n=19). no conversion to open surgery was necessary. conclusion: the model of laparoscopic partial hepatectomy in rats using surgical material similar to that used in humans is doable for surgeons' training and improvement.
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