774 research outputs found
Capoeira e educação física: um resgate histórico
Esse artigo se reporta à relação existente entre a Capoeira e a Educação Física, passando por um resgate histórico. Pretendemos dar uma visão geral de como começou a prática da Educação Física no Brasil e de que maneira foi introduzida nos estabelecimentos de ensino, bem como assinalar as influências que os métodos de ginástica de origem estrangeira tiveram sobre a Educação e a Cultura Brasileira e como a Capoeira se relaciona com a Educação Física, integrando-se como um método de Ginástica brasileiro
Field Dependence/Independence and its Relationship to Schema Utilization during Discourse Processing
This study investigated the relationship between field dependence/independence and the ability to utilize prior knowledge during discourse processing.
A sample population of thirty-one eighth grade students were given the Group Embedded Figures Test, a measure of field dependence/independence, and one of two narrative passages designed to measure the degree to which an individual utilizes prior knowledge.
The scores of these two measures were analyzed to determine if there was a significant difference between the field dependents and the field independents in their performance on the constrained and unconstrained passages, measuring schema utilization.
A significant difference was found in the mean score of the two groups on the constrained passage, no difference was found in their performance on the unconstrained passage.
This analysis leads to the conclusion that in this testing population of eighth graders, the field independent students were better able to utilize their prior knowledge to comprehend a written passage than the field dependent students
Índice antropométrico para Pectus excavatum
BACKGROUND: Pectus excavatum (PEX) is a depression of the sternum in relation to the costal cartilages. Clinical and objective measures for classifying the defect are rare and difficult to apply. The present study aimed to create an anthropometric index (AI) for PEX as a method for diagnosis and for preoperative and postoperative assessment by comparing it to the Haller index (HI) and to the lower vertebral index (LVI). METHODS: From December 2001 to February 2004, 2 groups of patients were studied at our institution: a) 30 patients with normal configuration of the thoracic cage, upon physical examination; b) 20 patients with PEX. The latter underwent surgery according to the Ravitch technique modified by Robicsek, and they were evaluated in the postoperative period. All patients were assessed by means of the AI (clinical), HI (tomographic), and LVI (radiographic) measures at the level of deepest deformity in the case of the PEX patients, and in the distal third of the sternum in the normal patients. The patients who had undergone surgery were once again measured between the 60th and the 80th postoperative days. RESULTS: There was a high correlation between the AI and the HI (80% P < .001) and between the AI and the LVI (79% P < .001). The accuracy of the 3 indices was similar, in that the following cut points were established: AI = 0.12, HI = 3.10, and LVI = 0.25. Upon analyzing the preoperative results, we verified that for the 3 indices, over 75% of the patients with pectus excavatum were above the cut points and were confirmed as having the defect. In the postoperative results, the value of the indices found below the cut point was considered within the normal standard, and this occurred in 100% for the AI, in over 50% for the HI, and in 50% for the LVI. CONCLUSIONS: The AI allowed adequate measurement of the defect, maintaining a) a high correlation with the HI and the LVI and a high accuracy, similar to the already acknowledged and published indices and b) an efficient comparison between the preoperative measurement and the postoperative results.INTRODUÇÃO: O pectus excavatum (PEX) caracteriza-se por depressão do esterno em relação ao gradeado costal. Medidas clínicas e objetivas para classificar esse defeito são raras e de difícil aplicação. Este trabalho tem por objetivo criar um índice antropométrico para PEX (IA) como método diagnóstico e de avaliação pré e pós-operatória, comparando-o ao índice de Haller (IH) e ao índice vertebral inferior (IV). MÉTODOS: No período de dezembro de 2001 a fevereiro de 2004 foram estudados dois grupos de pacientes no Serviço de Cirurgia Torácica do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo (HC-FMUSP): a) 30 pacientes com a caixa torácica com configuração normal ao exame físico; b) 20 pacientes portadores de PEX. Estes últimos foram operados pela técnica de Ravitch modificada por Robicsek e pelo Serviço de Cirurgia Torácica do HC-FMUSP, sendo estudados no pós-operatório. Todos os pacientes foram avaliados a partir do IA (medidas clínicas), do IH (medidas tomográficas) e do IV (medidas radiográficas) no nível da maior deformidade (MD), no caso dos PEX e no terço distal do esterno (TD), nos normais. Os pacientes operados foram novamente medidos entre o 60º e o 80º dia do pós-operatório. RESULTADOS: Houve elevada correlação entre o IA e o IH (80% p< 0,001) e entre o IA e o IV (79% p< 0,001). A acurácia dos três índices foi similar, sendo que se estabeleceram os seguintes pontos de corte: IA= 0,12; IH= 3,10; e IV= 0,25. Ao ser analisado o pré-operatório, foi verificado para os três índices, que mais de 75% dos portadores de PEX encontravam-se acima dos pontos de corte e foram confirmados como portadores do defeito. No pós-operatório os valores dos índices encontrados abaixo do ponto de corte foram considerados dentro do padrão normal e isso ocorreu em 100% para o IA, em mais de 50% para o IH, e em 50% para o IV. CONCLUSÕES: O IA permitiu mensurar adequadamente o defeito, mantendo: a) alta correlação com o IH e o IV e elevada acurácia, semelhante à desses índices já consagrados; b) eficaz comparação entre o pré e pós-operatório
Distribution and Outcomes of a Phenotype- Based Approach to Guide COPD Management: Results from the CHAIN Cohort
Rationale The Spanish guideline for COPD (GesEPOC) recommends COPD treatment according to
four clinical phenotypes: non-exacerbator phenotype with either chronic bronchitis or emphy-
sema (NE), asthma-COPD overlap syndrome (ACOS), frequent exacerbator phenotype with
emphysema (FEE) or frequent exacerbator phenotype with chronic bronchitis (FECB). How-
ever, little is known on the distribution and outcomes of the four suggested phenotypes.
Objective
We aimed to determine the distribution of these COPD phenotypes, and their relation with
one-year clinical outcomes.
Methods
We followed a cohort of well-characterized patients with COPD up to one-year. Baseline
characteristics, health status (CAT), BODE index, rate of exacerbations and mortality up to
one year of follow-up were compared between the four phenotypes.
Results
Overall, 831 stable COPD patients were evaluated. They were distributed as NE, 550
(66.2%); ACOS, 125 (15.0%); FEE, 38 (4.6%); and FECB, 99 (11.9%); additionally 19
(2.3%) COPD patients with frequent exacerbations did not fulfill the criteria for neither FEE
nor FECB. At baseline, there were significant differences in symptoms, FEV 1 and BODE
index (all p<0.05). The FECB phenotype had the highest CAT score (17.1±8.2, p<0.05
compared to the other phenotypes). Frequent exacerbator groups (FEE and FECB) were
receiving more pharmacological treatment at baseline, and also experienced more exacer-
bations the year after (all p<0.05) with no differences in one-year mortality. Most of NE
(93%) and half of exacerbators were stable after one year.
Conclusions
There is an uneven distribution of COPD phenotypes in stable COPD patients, with signifi-
cant differences in demographics, patient-centered outcomes and health care resources
use
Trends in crop reference evapotranspiration and climatological variables across Ceará state: Brazil.
Irrigation has a substantial share in total world water demand. At the global level, the withdrawal ratio for agriculture is 69 percent. Irrigation is necessary to compensate evapotranspiration (ET) deficit due to insufficient precipitation. Knowing the impacts of climatic changes on meteorological variables that directly affect the ET is important for successful climate adaptation. This paper analyzes annual trends in measured meteorological variables and in the crop reference evapotranspiration (ET0), at eight climatological stations in Ceará State, Brazil. Two statistical tests for trend analysis were used - Mann-Kendall and linear regression. The results indicate positive trend, statistically significant, in the maximum air temperature in five of eight stations. Minimum air temperature showed positive trend in three stations. Wind speed, sunshine hours and relative humidity presented positive and negative trends. These irregular patterns directly impacted ET0 in three stations. It seems that the increasing trend in ET0 was probably due to a significant increase detected in maximum temperature and minimum air temperature, not fully offset by the decrease in wind speed and relative humidity. The warning from these results is that water demand for irrigation is expected to significantly increase over the next decades on in Jaguaribe River Basin
INTEGRAÇÃO DO SIG, HEC/HMS E HEC/RAS NO MAPEAMENTO DE ÁREA DE INUNDAÇÃO URBANA: APLICAÇÃO À BACIA DO RIO GRANJEIRO-CE
O artigo apresenta uma aplicação integrada de modelos hidrológico, hidráulico e Sistemas de Informações Geográficas (SIG) para delimitar áreas inundadas por uma chuva centenária no município do Crato, no Estado do Ceará. Os programas computacionais empregados foram: o Hydrologic Engineering Center-Hydrologic Modeling System (HEC-HMS) para a modelagem hidrológica; o Hydrologic Engineering Center-River Analysis System (HEC-RAS) para a modelagem hidráulica da superfície de inundação; e o HEC-GeoRAS para elaborar o mapeamento. Os resultados mostraram que parte substancial da população urbana da cidade do Crato é afetada por inundações ocasionadas por uma chuva de frequência centenária de 194 mm, com sete horas de duração que resulta em um pico de cheias de 336 m³ s-1, afetando aproximadamente 19% da área urbana do município do Crato, ocasionada pela cheia do Rio Granjeiro
Esterilização cirúrgica voluntária na Região Metropolitana de Campinas, São Paulo, Brasil, antes e após sua regulamentação
Relationship of rural work with gender and education level / Relação do trabalho rural com gênero e nível de escolaridade
The research analyzes the relationship between rural work gender and education level based on microdata from the Brazilian Federal Government's General Register of Employed and Unemployed. Using data from employment in the states of Ceará and São Paulo as a case study, the descriptive analysis from the demand curve confirms that male workers have higher average salary level than female workers, in rural areas and also in urban areas, regardless of schooling. The research used the calculation of the price elasticity of demand coefficient to capture the behavior of employment in response to wage variations and showed that for illiterate workers job is more stable in Ceará regardless of gender. On the other hand, for São Paulo illiterate workers have less job stability. For workers with incomplete elementary education, the demand for men and women is inelastic for both Ceará and São Paulo. The cross-elasticity coefficients showed that the higher the level of education, the lower the possibility of discrimination as both gender are considered substitute factors of production
Effect of Basic Promoters on Porous Supported Alumina Catalysts for Acetins Production
A facile strategy for the design of porous supports was obtained by modifying the sol-gel method followed by the wet impregnation technique. In this respect, herein, the acidity of the γ-Al2O3 phase was modulated by adding basic MgO, La2O3 or ZnO promoters to form binary supported catalysts. The Ni and Co dispersion on the supports associated with their tunable acidity and morphologies resulted in highly porous supported alumina-based catalysts. The physicochemical properties of the solids were comprehensively investigated by XRD, textural properties, Raman and FTIR spectroscopy, SEM-EDS, TEM, EPR and XPS analyses. The catalytic performances in the esterification of glycerol in the presence of acetic acid (EG) for the acetins production were evaluated. The highly dispersed NiO and Co3O4 active species on binary porous supports produced synergistic effects appearing to be the reason for the activity of the solids in the EG reaction. Under the optimized reaction conditions, NiCo/MgO-Al2O3 was found to be a robust solid with superior catalytic performance and improved stability in four reaction cycles with 65.0% of glycerol conversion with an exclusive selectivity of 53% for triacetin. The presence of Co2+/Co3+ and Ni2+ strongly interacting with the spinel γ-Al2O3 and MgAl2O4 phases, the latter having a large number of lattice oxygen species, was considered another active component besides those of Ni and Co in the esterification of glycerol.This work is supported by Funcap (Grant n° PS1-0186-00346.01.00/21). Financial assistance received from Ministerio de Ciencia e Innovación, Junta de Andalucía and FEDER is also thankfully acknowledged for funding project n° PID2021-126235OB-C32, UMA18-FEDERJA-126 and P20_00375. Partial funding for open access charge: Universidad de Málag
Optics and children
Light and Optics are subjects that “naturally” attracts the interest and sympathy of
children even from very early ages. In this communication, we present a serie of experiments
and support material designed in this hands-on perspective, to be used to introduce the study of
light and optics to kindergarten and early basic school students. Our hands-on investigative
approach leads the students, aged 4 to 10 years, to observe the experiment and discover
themselves, in a critical and active way, different aspects of light and optics. Preparing funny
eye catching situations and experiments predispose the children to work, effectively, enjoying
themselves while building up their self-confidence.(undefined
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