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Search Results: 1 - 10 of 683821 matches for " Renata M. T. B. L.;Menezes "
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O uso de pinturas de Dalí como ferramenta para avalia??o das altera??es na percep??o de forma e tamanho em pacientes esquizofrênicos
Simas, Maria Lúcia de Bustamante;Nogueira, Renata M. T. B. L.;Menezes, Geórgia M. M.;Amaral, Viviane F.;Lacerda, Aline M.;Santos, Natanael A.;
Psicologia USP , 2011, DOI: 10.1590/S0103-65642011005000006
Abstract: a variety of studies involving schizophrenic patients have shown the occurrence of severe disabilities related to perception and cognition. most diagnostics rely on alterations that reveal faulty reasoning. our studies evaluate altered visual form and size perception in schizophrenic and major depression patients using 24 paintings by salvador dalí. we conducted two studies comparing experimental and control groups and found in both cases that schizophrenic patients first saw forms 1.5-3.0 times larger than controls. in another study with major depression patients, we show the absence of alterations in size perception during aggravated depressive symptoms. these effects on size perception can contribute as markers in the precocious diagnostic of the onset of positive symptoms in schizophrenia. we suggest that these paintings by dalí can be employed as a tool to assess the state of visual form and size perception in schizophrenic patients, and therefore prevent cognitive deterioration by introducing early treatment.
Mesopic Visual Contrast Sensitivity in Patients with Major Depression  [PDF]
Renata M. T. B. L. Nogueira, Everton L. Espínola, Aline M. Lacerda, Natanael A. Santos
Open Journal of Depression (OJD) , 2013, DOI: 10.4236/ojd.2013.24014
Abstract: The present study evaluated the effects of major depression on visual contrast sensitivity (CS) at low mesopic luminance (.7 cd/m2 mean luminance), a condition that has been little explored in the literature. We measured spatial visual CS in 20 male volunteers aged 20 - 30 years, including 10 healthy individuals and 10 medicated individuals with major depression, to linear sine-wave gratings of .25, 1.0, and 4.0 cycles per degree (cpd) of visual angle using the psychophysical staircase method with forced choice. The average spatial visual CS in the depressed group was approximately 1.7 lower than the average spatial visual CS in the control group. However, the post hoc test showed significant differences only at the spatial frequencies of .25 and 1.0 cpd (p < .05), which are likely processed by the magnocellular visual pathway. These results suggest that spatial visual CS to sine-wave gratings should be used to evaluate the responsiveness of the visual system in patients with major depression under conditions of low luminance.
Implicaciones del proceso de acreditación para los pacientes desde la perspectiva de los profesionales de enfermería
Figueiredo Manzo,B.; Couto Ribeiro,H.C.T.; Menezes Brito,M.J.; Alves,M.; Bauer Feldman,L.;
Enfermería Global , 2012, DOI: 10.4321/S1695-61412012000100016
Abstract: the study aimed to understand the implications of the accreditation process for patients from the perspective of nursing professionals. it is a qualitative study conducted in a mid-sized private hospital in belo horizonte, brazil. a total of 24 professionals, 9 nurses and 15 nursing technicians took part in the study. data were collected through interviews with semi-structured guide and analyzed with the support of content analysis. the results showed that the accreditation process provides a care for patients with excellence, with standardization of techniques and support for scientific care by directing actions and health practices that are performed safely. on the other hand the subjects reported the lack of knowledge of the patients of the importance of accreditation as well as the fact that there is a distance between the professionals and patients, due to the bureaucratic aspects of the accreditation process and time limitation for dialogue and interaction. thus, in view of the research subjects, the hospital accreditation means better conditions in patient care, including care with excellence, but impairs the patient-professional contact, due to high demand and bureaucracy in the process.
Diversidade de Coccinellidae (Coleoptera) em plantas aromáticas (Apiaceae) como sítios de sobrevivência e reprodu??o em sistema agroecológico
Lixa, Alice T;Campos, Juliana M;Resende, André L S;Silva, Joice C;Almeida, Maxwell M T B;Aguiar-Menezes, Elen L;
Neotropical Entomology , 2010, DOI: 10.1590/S1519-566X2010000300007
Abstract: studies show that apiaceae may provide concentrated vital resources for predator insects, stimulating their abundance, diversity and persistence in agricultural systems, thereby increasing their efficiency as biological control agents. among the predatory insects, coccinellidae (coleoptera) on many different species both as larvae and adults, complementing their diet with pollen and/or nectar. this study aimed to determine the diversity and relative abundance of coccinellidae species visiting plants of anethum graveolens (dill), coriandrum sativum (coriander) and foeniculum vulgare (sweet fennel) (all apiaceae), particularly in their blooming seasons, and to evaluate the potential of these aromatic species for providing the resources for survivorship and reproduction of coccinelids. coccinellids were collected by removal of samplings from september to october, 2007. besides one unidentified species of chilocorinae, five species of coccinellinae were collected: coleomegilla maculata degeer, coleomegilla quadrifasciata (sch?nherr), cycloneda sanguinea (l.), eriopis connexa (germar) and hippodamia convergens guérin-meneville. dill provided a significant increase in the abundance of coccinellids as compared to coriander and sweet fennel. these aromatic species were used by coccinellids as survival and reproduction sites, providing food resources (pollen and/or prey), shelter for larvae, pupae and adults, and mating and oviposition sites as well.
Sensitivity Analysis of the TRIGA IPR-R1 Reactor Models Using the MCNP Code
C. A. M. Silva,J. A. D. Salomé,B. T. Guerra,C. Pereira,A. L. Costa,M. A. F. Veloso,M. A. B. C. Menezes,H. M. Dalle
International Journal of Nuclear Energy , 2014, DOI: 10.1155/2014/793934
Abstract: In the process of verification and validation of code modelling, the sensitivity analysis including systematic variations in code input variables must be used to help identifying the relevant parameters necessary for a determined type of analysis. The aim of this work is to identify how much the code results are affected by two different types of the TRIGA IPR-R1 reactor modelling processes performed using the MCNP (Monte Carlo N-Particle Transport) code. The sensitivity analyses included small differences of the core and the rods dimensions and different levels of model detailing. Four models were simulated and neutronic parameters such as effective multiplication factor ( ), reactivity ( ), and thermal and total neutron flux in central thimble in some different conditions of the reactor operation were analysed. The simulated models presented good agreement between them, as well as in comparison with available experimental data. In this way, the sensitivity analyses demonstrated that simulations of the TRIGA IPR-R1 reactor can be performed using any one of the four investigated MCNP models to obtain the referenced neutronic parameters. 1. Introduction The TRIGA IPR-R1 research reactor, located at the Centro de Desenvolvimento da Tecnologia Nuclear (CDTN) sponsored by Comiss?o Nacional de Energia Nuclear (CNEN) in Belo Horizonte, Brazil, operates since 1960 and it has been an important source of experimental data used in the processes of verification and qualification of several modelling processes of neutronic and thermal-hydraulic codes. Furthermore, the Laboratory for Neutron Activation Analysis of CDTN has been responsible for 70% of the analytical demand using the method of neutron activation analysis, established since 1995. Tests confirmed that the TRIGA IPR-RI reactor presented suitable characteristics to apply the method, mainly due to its stable and homogenous neutron fluxes. At that time, due to the symmetry of the core configuration and the rotary rack, no variations in neutron flux distribution in different channels were taken into account. The average thermal and epithermal fluxes were determined in the reactor rotating carousel facility (CF) [1, 2]. However, the reactor core configuration was changed in 2001 to enable a future power increase from 100 to 250 kW. This change consisted of four fuel rods added to the core, replacing the graphite dummy elements in the circular TRIGA core configuration [3]. In this configuration, the axial and radial neutron fluxes have not been measured and there are no experimental data about these
Dynamics of the Leaf-Litter Arthropod Fauna Following Fire in a Neotropical Woodland Savanna
Heraldo L. Vasconcelos,Renata Pacheco,Raphael C. Silva,Pedro B. Vasconcelos,Cauê T. Lopes,Alan N. Costa,Emilio M. Bruna
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0007762
Abstract: Fire is an important agent of disturbance in tropical savannas, but relatively few studies have analyzed how soil-and-litter dwelling arthropods respond to fire disturbance despite the critical role these organisms play in nutrient cycling and other biogeochemical processes. Following the incursion of a fire into a woodland savanna ecological reserve in Central Brazil, we monitored the dynamics of litter-arthropod populations for nearly two years in one burned and one unburned area of the reserve. We also performed a reciprocal transplant experiment to determine the effects of fire and litter type on the dynamics of litter colonization by arthropods. Overall arthropod abundance, the abundance of individual taxa, the richness of taxonomic groups, and the species richness of individual taxa (Formiciade) were lower in the burned site. However, both the ordinal-level composition of the litter arthropod fauna and the species-level composition of the litter ant fauna were not dramatically different in the burned and unburned sites. There is evidence that seasonality of rainfall interacts with fire, as differences in arthropod abundance and diversity were more pronounced in the dry than in the wet season. For many taxa the differences in abundance between burned and unburned sites were maintained even when controlling for litter availability and quality. In contrast, differences in abundance for Collembola, Formicidae, and Thysanoptera were only detected in the unmanipulated samples, which had a lower amount of litter in the burned than in the unburned site throughout most of our study period. Together these results suggest that arthropod density declines in fire-disturbed areas as a result of direct mortality, diminished resources (i.e., reduced litter cover) and less favorable microclimate (i.e., increased litter desiccation due to reduction in tree cover). Although these effects were transitory, there is evidence that the increasingly prevalent fire return interval of only 1–2 years may jeopardize the long-term conservation of litter arthropod communities.
Assessment of metal concentration in the Billings Reservoir sediments, S?o Paulo State, Southeastern Brazil
Hortellani, Marcos A.;Sarkis, Jorge E. S.;Menezes, Luciana C. B.;Bazante-Yamaguishi, Renata;Pereira, Alder S. A.;Garcia, Priscila F. G.;Maruyama, Lídia S.;Castro, Paula M. Gênova de;
Journal of the Brazilian Chemical Society , 2013, DOI: 10.1590/S0103-50532013000100009
Abstract: four approaches were applied to evaluate the metal contamination in 47 sediment samples (< 63 μm fraction) collected at 13 fishing points of the billings reservoir: sediment quality guidelines (sqgs), geoaccumulation index (igeo), metal pollution index (mpi) and statistical analyses. only fe and co concentrations seemed to be associated with crustal material or natural weathering processes, while al, cd, cr, cu, hg, mn, ni, pb and zn showed increases in their concentrations, which seemed to be associated with anthropogenic sources. mpi identified the most critical sites in relation to the total metal accumulation while igeo identified the specific metal accumulation for each site. analysis of variance (anova) and box plot method were performed to evaluate seasonal effects on the metal levels. only box plot suggested a slight increase in hg and pb contamination during heavy rainy periods and also indicated high concentrations of cu and zn in one of the analyzed point, with incidence of outliers and extreme values. thus, an environmental policy in order to reduce these metal contaminations must be adopted.
Some enzymatic properties of cholesterol oxidase produced by Brevibacterium sp
Salva, Terezinha J.G.;Liserre, Alcina M.;Moretto, Aloísia L.;Zullo, Marco A.T.;Ventrucci, Gisleine;Menezes, Tobias J.B.;
Revista de Microbiologia , 1999, DOI: 10.1590/S0001-37141999000400005
Abstract: in this study we determined some properties of the cholesterol oxidase from a brevibacterium strain isolated from buffalo's milk and identified the cholesterol degradation products by the bacterial cell. a small fraction of the enzyme synthesized by cells cultured in liquid medium for 7days was released into the medium whereas a larger fraction remained bound to the cell membrane. the extraction of this fraction was efficiently accomplished in 1 mm phosphate buffer, ph 7.0, containing 0.7% triton x-100. the enzyme stability under freezing and at 45oc was improved by addition of 20% glycerol. the optimum temperature and ph for the enzyme activity were 53°c and 7.5, respectively. the only steroidal product from cholesterol oxidation by the microbial cell and by the crude extract of the membrane-bound enzyme was 4-colesten-3-one. chromatographic analysis showed that minor no steroidal compounds as well as 4-colesten-3-one found in the reaction media arose during fermentation process and were extracted together with the enzyme in the buffer solution. cholesterol oxidation by the membrane-bound enzyme was a first order reaction type.
Mycoplasma pneumoniae and/or Chlamydophila pneumoniae inoculation causing different aggravations in cholesterol-induced atherosclerosis in apoE KO male mice
Sueli B Damy, Maria L Higuchi, Jorge Timenetsky, Márcia M Reis, Suely P Palomino, Renata N Ikegami, Fabiana P Santos, Junko T Osaka, Luiz P Figueiredo
BMC Microbiology , 2009, DOI: 10.1186/1471-2180-9-194
Abstract: The mean and standard deviation of plaque height, % luminal obstruction, external diameter, the plaque area/intimal surface ratio and the adventitial inflammation values are the following for each group: MP (0.20 +/- 0.12 mm, 69 +/- 26%, 0.38 +/- 0.11 mm, 0.04 +/- 0.04 and 0.22 +/- 0.67), CP (0.23 +/- 0.08 mm, 90 +/- 26%, 0.37 +/- 0.08 mm, 0.04 +/- 0.03, and 0.44 +/- 0.53), MP + CP (18 +/- 0.08 mm, 84 +/- 4.0%, 0.35 +/- 0.25 mm, 0.03 +/- 0.03 and 1.33 +/- 0.82) and sham (0.08 +/- 0.09 mm, 42 +/- 46%, 0.30 +/- 0.10 mm, 0.02 +/- 0.03 and 0.71 ± 0.76). A wider area of plaque/intimal surface was observed in MP + CP inoculated groups (p = 0.07 and 0.06) as well as an increased plaque height in CP (p = 0.01) in comparison with sham group. There was also an increased luminal obstruction (p = 0.047) in CP inoculated group in comparison to sham group. Adventitial inflammation in MP + CP inoculated group was higher than MP, CP and the sham groups (p = 0.02).Inoculation of CP, MP or both agents in C57BL/6 apoE KO male mice caused aggravation of experimental atherosclerosis induced by cholesterol-enriched diet, with distinct characteristics. CP inoculation increased the plaque height with positive vessel remodeling and co-inoculation of MP + CP caused the highest adventitial inflammation measures.Atherosclerosis is considered an arterial inflammatory disease resulting from lipid entrance in the vascular wall and subsequent oxidation. Lipid oxidation has been related to infectious agents [1], mainly Chlamydophila or Chlamydia pneumoniae (CP) [2-4]. CP induced or accelerated atherosclerosis in experimental animals [5-7]. Although more than 700 studies have been published focusing CP in atherosclerosis, the inconsistent results of clinical trials using antibiotic therapy discouraged the infection theory. However, our previous studies have shown that co-infection of CP and Mycoplasma pneumoniae (MP) is usually present in atherosclerotic plaques, in greater amount in ruptured plaque
Influência do estresse alimentar na digestibilidade em c?es
Ferreira, C.F.;Palhares, M.S.;Assis, A.B.;Chamone, T.L.;Teixeira, G.L.;Guimar?es, K.;Menezes, J.C.;Silva Filho, J.M.;
Arquivo Brasileiro de Medicina Veterinária e Zootecnia , 2003, DOI: 10.1590/S0102-09352003000500016
Abstract: the influence of feeding stress on digestibility of 12 mongrel dogs was evaluated. six dogs were experimentally stress stimulated (t1) during four weeks and other six were used as control (t2). t1 dogs were stress stimulated by irregularities at feeding time, and by visual, smell and hearing stimuli related to feeding. feces were collected at first and fourth weeks after the stimulus begun. no alterations were found in digestibility coefficients of dry matter, crude protein, ether extract, non-nitrogen extract, neutral detergent fiber and gross energy when determined neither at the first nor at fourth week after stress stimuli.
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