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Search Results: 1 - 10 of 542800 matches for " Maria Luiza C.S.; "
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Meningite pneumocócica na infancia: características clínicas, sorotipos mais prevalentes e prognóstico
Berezin, Eitan N.;Carvalho, Luiza H.;Lopes, Claudia R.;Sanajotta, Andréia T.;Brandileone, Maria Cristina C.;Menegatti, Sonia;Safadi, Marco A.;Guerra, Maria Luiza C.S.;
Jornal de Pediatria , 2002, DOI: 10.1590/S0021-75572002000100006
Abstract: objective: to determine mortality, morbidity, antimicrobial susceptibility and the most frequent serotypes in children admitted to hospital due to pneumococcal meningitis methods: patients with meningitis caused by streptococcus pneumoniae detected by culture in cerebrospinal fluid or blood, aged between 1 month and 15 years old, admitted to two hospitals in the city of s?o paulo, were included in the study. susceptibility to penicillin was determined by the disk diffusion test using oxacillin 1 μg disk. if the inhibition area with oxacillin disk was less than 20mm, the strains were tested for penicillin, chloramphenicol, ceftriaxone, vancomycin and sulfamethoxazole /trimethoprim using the e test.results: we identified 55 patients, 52.5% of which were younger than 6 months. the prevalence of penicillin-nonsusceptible strains was 36%. all the strains were intermediately resistant (0.1mg/ ml £ mic£ 1.0 mg/ ml) and 35% of the penicillin intermediate resistant strains were resistant to sulfamethoxazole/trimethoprim. the mortality rate was 20% and impaired neurological outcome was present in 40% of the children. the audiometric test revealed alteration in 60% of the children tested. age less than 6 months was associated with poor outcome. the most frequent serotypes were 1, 5, 6b, 14, 19a and 23f, and 70% of the serotypes were included in the new 7-valent vaccine.conclusions: these findings suggest that pneumococcal meningitis presents high mortality and morbidity and that the 7-valent conjugate vaccine would be potentially useful in preventing serious pneumococcal infections.
Sand Slurry Erosive Wear Behavior of Hot Extruded Al6061-SiC Composites  [PDF]
C.S. Ramesh, R. Keshavamurthy
Journal of Minerals and Materials Characterization and Engineering (JMMCE) , 2011, DOI: 10.4236/jmmce.2011.106037
Abstract: Aluminum based composites are very popular in automotive and aerospace segments. In particular aluminum alloy-SiC composite systems are widely studied and seriously explored for various other applications in defense and space. However they have not been looked at as potential materials in naval and chemical applications where synergistic effects of both wear and corrosion need to be addressed to. This needs the assessment of wear behavior of composites. From the survey, it is evident that major focus is on mechanical and corrosion properties of cast composites. However, meager information is available as regards the slurry erosive wear behavior of cast and extruded metal matrix composites. In the light of the above, the present investigation is aimed at studying in detail the slurry erosive wear behavior of cast and hot extruded Al6061 and Al6061-SiC composites in sand slurry. Al6061-SiC composites have been prepared primarily by vortex method. Hot extrusion of these composites and the matrix alloy has been carried out at 550℃ using a 500T hydraulic press. Both as cast and hot extruded composites have been subjected to microstructure studies, microhardness, and slurry erosive wear tests. The hot extruded composites exhibit higher hardness, and slurry erosive wear resistance when compared with as cast alloy and its composites.
Rela??o entre a administra??o de esteróide anabólico androgênico, treinamento físico aeróbio e supercompensa??o do glicogênio
Cunha, Tatiana S;Tanno, Ana Paula;Moura, Maria José C.S.;Marcondes, Fernanda Klein;
Revista Brasileira de Medicina do Esporte , 2005, DOI: 10.1590/S1517-86922005000300007
Abstract: glycogen supercompensation is one of the adaptations induced by physical training. to potentiate this phenomenon, many athletes use supraphysiological doses of anabolic androgenic steroids (aas). the purpose of this study was to evaluate the effects of nandrolone and aerobic physical exercise in rats, on body weight, plasmatic triglycerides levels, blood glucose and glycogen content. male wistar rats were randomly divided into 4 groups: sedentary + vehicle (sv), trained + vehicle (tv), sedentary + aas (saas) and trained + aas (taas) (n = 7-14/group). they received i.m. injections of nandrolone or vehicle for 9 weeks, and during the same period trained rats were submitted to aerobic exercise. data were analyzed by two-way anova and tukey tests (p < 0.05). the groups saas, tv and taas presented lower body weight than the sv group (saas: 339 ± 10 = tv: 342 ± 14 = taas: 332 ± 6 < sv: 398 ± 9 g). physical training significantly reduced plasmatic concentration of triglycerides [(tv: 46 ± 4 = taas: 44 ± 3) < (sv: 104 ± 1 = saas: 101 ± 6 mg/dl)] and of hepatic glycogen [(tv: 3,38 ± 0,57 = taas: 2,62 ± 0,34) < (sv: 4,95 ± 0,11 = saas: 4,43 ± 0,23 mg/100 mg)] and increased the cardiac glycogen concentration [(tv: 0,38 ± 0,04 = taas: 0,42 ± 0,03) > (sv: 0,2 ± 0,02 = saas: 0,21 ± 0,02 mg/100 mg)]. blood glucose and soleus glycogen reserves remained unaltered. the use of supraphysiological doses of nandrolone did not potentiate any of the effects obtained in response to aerobic physical training.
Structural and successional variability of periphytic algal community in a Amazonian lake during the dry and rainy season (Rio Branco, Acre)
Fran?a, Raquel C.S;Lopes, Maria Rosélia Marques;Ferragut, Carla;
Acta Amazonica , 2011, DOI: 10.1590/S0044-59672011000200010
Abstract: the colonization process and successional patterns of a periphytic algal community were evaluated in a amazonian viveiro lake (rio branco, acre, brazil). sampling was performed over a period of 35 days; at four-day intervals for 20 days, and then at five-day intervals. water sampling for physical, chemical and biological analyses was done during the dry and rainy season. glass slides were used as artificial substrates for periphyton colonization. the structural community was evaluated through population density, algae class, diversity indices and descriptive species. species richness, diversity and evenness increased as succession progressed. while density of bacillariophyceae, euglenophyceae and zygnemaphyceae increased with succession, cyanobacteria remained dominant. synechocystis aquatilis, synechocystis diplococcus and navicula pseudolanceolata were the main descriptive species in both the dry and rainy season. cymbela tumida, frustulia rhomboides, trachelomonas lacustris and closterium acicularis was correlated with an increase in hydrologic level during the rainy season. conversely, the density of chlamydomonas sp., chroomonas nordstedtii, trachelomonas volvocinopsis, trachelomonas volvocina and synechococcus linearis was correlated with an increase in water transparency during the dry season. in general, the periphytic algal community showed high diversity and species richness independent of season. season also had little influence on representation of algae class and main descriptive species. however, successional patterns varied by season, and changes in hydrologic levels acted directly on the succession path of periphytic algae. more research on periphyton dynamics is needed to improve our understanding of tropical lake ecosystems, especially in amazonian.
Human Papillomavirus prevalence, viral load and cervical intraepithelial neoplasia in HIV-infected women
Levi José E.,Fink Maria C.S.,Canto Cynthia L.M.,Carretiero Nadily
Brazilian Journal of Infectious Diseases , 2002,
Abstract: HIV-infected women from S o Paulo city were enrolled in a cross-sectional study on Human Papillomavirus (HPV) and cervical intraepithelial neoplasia (CIN) prevalence and their association with laboratory markers of AIDS, namely HIV viral load and CD4+ cell counts. A cervical specimen was collected and submitted to Hybrid Capture, a test for HPV viral load determination. HPV-DNA was detected in 173 of 265 women (64.5%). Twenty (7.5%) women were infected by one or more low-risk viruses, 89 (33%) by one or more high-risk viruses, and 64 (24%) harbored at least one HPV type from each risk group. Abnormal smears were observed in 19% of the patients, though there were no invasive carcinomas. Severely immunosuppressed patients (CD4/μL <100) were at the greatest risk of having a cytological abnormality and a high high-risk HPV viral load.
Editorial introduction: Encouraging debate: The influence of Gerard Duveen
Howarth, C.S.
Papers on Social Representations , 2010,
Abstract:
Editorial 2009: Towards scholarship, innovation and collaboration
Howarth, C.S.
Papers on Social Representations , 2009,
Abstract:
Revisiting Gender Identities and Education: Notes for a Social Psychology of Resistant Identities in Modern Cultures
Howarth, C.S.
Papers on Social Representations , 2010,
Abstract: In this paper I offer a review and a reflection on Gender Identities and Education: The Impact of Starting School (Lloyd and Duveen, 1992) as a means of examining the detail and insights of Gerard Duveen’s contribution to the study of identity. What this study highlights is the contextual, imposed, inter-subjective and collaborative nature of identity, the relationship between re-presentation, culture and identity, and the dynamic, resistant and transformative character of identity production. I give detailed empirical examples of the genesis of representations of gender and gendered identities through a discussion of the interconnections between microgenesis, ontogenesis and sociogenesis. This leads onto a consideration of representations ‘that other’ more generally and the importance of including the social and material within the methodology of identity projects. As such, I argue, we can see the work of Duveen and his colleagues as valuable for a theory and a method of research of resistant identities in modern cultures, and thereby develop a social psychology properly equipped to research current social relations, and properly engaged with contemporary experiences of identity.
Towards The Eradication Of Iodine Deficiency Disorders In India
Pandav C.S.
Indian Journal of Community Medicine , 1986,
Abstract:
Stochastic Programming with Tractable Meanb-risk Objectives for Refinery Planning under Uncertainty
C.S. Khor
Journal of Applied Sciences , 2010,
Abstract: The application of Information Technology (IT) and Information Systems (IS) have been crucial in enhancing the operating flexibility and resiliency of refineries. In particular, the Process Systems Engineering (PSE) community has been instrumental in carrying out a key role in extending the systems engineering boundaries from mere chemical process systems to the incorporation of business process systems with consideration for risk. Thus, this study considers a robust framework for the economic and operational risk management of a refinery under uncertainty by extending an existing two-stage stochastic program with fixed recourse via scenario analysis. The problem is mathematically formulated as a two-stage stochastic nonlinear program with a tractable meanbrisk structure in the objective function. Two measures of risk are considered, namely the metrics of Mean-Absolute Deviation (MAD) and Conditional Value-at-Risk (CVaR). The scenario analysis approach is adopted to represent uncertainties in three types of stochastic parameters, namely prices of crude oil and commercial products, market demands and production yields. However, a large number of scenarios are required to capture the stochasticity of the problem. Therefore, to circumvent the problem of the resulting large-scale model, we implement a Monte Carlo simulation approach based on the Sample Average Approximation (SAA) technique to generate the scenarios. A statistical-based scenario reduction strategy is applied to determine the minimum number of scenarios required yet still able to compute the true optimal solution for a desired level of accuracy within the specified confidence intervals. The proposed model is illustrated through a representative numerical example, with computational results demonstrating how risk-averse-and risk-inclined solutions in the face of uncertainty can be attained in a risk-conscious model.
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