Últimos itens adicionados do Acervo: Biblioteca Digital da Produção Intelectual da USP

A Biblioteca Digital da Produção Intelectual da Universidade de São Paulo (BDPI) é um sistema de gestão e disseminação da produção científica, acadêmica, técnica e artística gerada pelas pesquisas desenvolvidas na USP.

Página 7 dos resultados de 43044 itens digitais encontrados em 0.011 segundos

Practice of walking and its association with perceived environment among elderly Brazilians living in a region of low socioeconomic level

Salvador, Emanuel Péricles; REIS, Rodrigo S.; FLORINDO, Alex Antonio
Fonte: BIOMED CENTRAL LTD; LONDON Publicador: BIOMED CENTRAL LTD; LONDON
Tipo: Artigo de Revista Científica
Português
Background: The aim of this study was analyze associations between the practice of walking and environmental perception among elderly Brazilians in a region of low socioeconomic level. Methods: A cross-sectional study was conducted among 385 elderly people aged 60 years and over. To evaluate walking, the International Physical Activity Questionnaire (IPAQ), long version (leisure and transport modules) was used. The environment was evaluated by means of the Neighborhood Environmental Walkability Scale (NEWS) (adapted Brazilian version). For the statistical analysis, multiple logistic regression models were created separately for men and women. The practice of at least 150 minutes a week of walking was the dependent variable, and the variables of environmental perception were the independent variables. All the models were controlled for schooling level and age. Results: The proportion of elderly people active in walking was 56.9% for the men and 26.4% for the women. The perception of the presence of soccer fields (OR = 4.12) and their proximity, within ten minutes' walk from home (OR = 3.43), were associated with the practice of walking among the men. The perception of the presence of public squares (OR = 4.70) and the proximity of primary healthcare units...

Association Between Physical Activity in Parks and Perceived Environment: A Study With Adolescents

REIS, Rodrigo Siqueira; HINO, Adriano Akira Ferreira; FLORINDO, Alex Antonio; ANEZ, Ciro Romelio Rodriguez; DOMINGUES, Marlos Rodrigues
Fonte: HUMAN KINETICS PUBL INC Publicador: HUMAN KINETICS PUBL INC
Tipo: Artigo de Revista Científica
Português
Background: The purpose of this study was to analyze the relationship between adolescents' physical activity practice and their perception about the environment of urban parks. Methods: A school-based representative sample (n = 1,718; boys = 40.4%) of teenagers of Curitiba, Southern region of Brazil. A questionnaire was employed to identify perceived parks environmental features as well as physical activity practice in the parks (PAP), habitual physical activity (HPA) and demographics. The relationship between PAP and parks environments was analyzed through multivariate logistic regression controlling for age and socioeconomic status, HPA and parks distance. Results: After controlling for confounders PAP was associated with lack of space to be physically active, activities to choose from and equipments for both boys and girls, (odds ratio (OR)-ranging from 1.5 to 1.8). Among boys, having people of same age (OR = 1.5) and accessibility (OR = 2.0) showed association with PAP only in crude analysis. However, among girls, to be bulled or teased (OR = 1.4) and accessibility (OR = 1.7) were associated with PAP after confounding control. Conclusions: The results showed that specific attributes in parks may be considered and offered to increase the likelihood of physical activity practice among adolescents in such locations.

Methods and Participant Characteristics of a Randomized Intervention to Promote Physical Activity and Healthy Eating Among Brazilian High School Students: The Saude na Boa Project

NAHAS, Markus V.; BARROS, Mauro V. G. de; ASSIS, Maria Alice A. de; HALLAL, Pedro C.; FLORINDO, Alex A.; KONRAD, Lisandra
Fonte: HUMAN KINETICS PUBL INC Publicador: HUMAN KINETICS PUBL INC
Tipo: Artigo de Revista Científica
Português
Background: A cross-cultural, randomized study was proposed to observe the effects of a school-based intervention designed to promote physical activity and healthy eating among high school students in 2 cities from different regions in Brazil: Recife and Florianopolis. The objective of this article is to describe the methodology and subjects enrolled in the project. Methods: Ten schools from each region were matched and randomized into intervention and control conditions. A questionnaire and anthropometry were used to collect data in the first and last month of the 2006 school year. The sample (n = 2155 at baseline; 55.7% females; 49.1% in the experimental group) included students 15 to 24 years, attending nighttime classes. The intervention focused on simple environmental/organizational changes, diet and physical activity education, and personnel training. Results: The central aspects of the intervention have been implemented in all 10 intervention schools. Problems during the intervention included teachers' strikes in both sites and lack of involvement of the canteen owners in schools. Conclusions: The Saude no Boa study provides evidence that public high schools in Brazil represent an important environment for health promotion. Its design and simple measurements increase the chances of it being sustained and disseminated to similar schools in Brazil.

Percepções dos professores quanto à inclusão de alunos com deficiência em aulas de Educação Física; Teachers' Perceptions about Inclusion of Students with Disabilities in Physical Education Classes

GORGATTI, Marcia Greguol; ROSE JUNIOR, Dante de
Fonte: UNIV FED RIO GRANDE DO SUL, ESCOLA EDUC FISICA Publicador: UNIV FED RIO GRANDE DO SUL, ESCOLA EDUC FISICA
Tipo: Artigo de Revista Científica
Português
The purpose of this study was to verify regular schooling teacher's attitudes toward inclusion children with disabilities in the classes. For that, 90 physical education teachers, from private and public schools, answered to a scale with 18 affirmations. It was observed by results that general tendency of teachers was negative toward inclusion. This pessimism wasn't related to teachers sex and time experience. Stronger teachers pessimism was about their lack of preparing to work with handicapped students. Teachers with less experience time showed more optimism about the benefits of all students in inclusion settings.

The Staircase Structure of the Southern Brazilian Continental Shelf

BAPTISTA, M. S.; CONTI, L. A.
Fonte: HINDAWI PUBLISHING CORPORATION Publicador: HINDAWI PUBLISHING CORPORATION
Tipo: Artigo de Revista Científica
Português
We show some evidences that the Southeastern Brazilian Continental Shelf (SBCS) has a devil's staircase structure, with a sequence of scarps and terraces with widths that obey fractal formation rules. Since the formation of these features is linked with the sea-level variations, we say that the sea level changes in an organized pulsating way. Although the proposed approach was applied in a particular region of the Earth, it is suitable to be applied in an integrated way to other shelves around the world, since the analyses favor the revelation of the global sea-level variations. Copyright (C) 2009 M. S. Baptista and L. A. Conti.; Centro de Matematica da Universidade do Porto; FCT; European Community

The Process of Simulation Authoring/Creation by Chemistry Teachers: A Service Learning Experience

FEJES, Marcela Elena; INFANTE-MALACHIAS, Maria Elena; NAVAS, Ana Maria; NUNES, Cesar Augusto Amaral
Fonte: UNIV AUTONOMA BARCELONA Publicador: UNIV AUTONOMA BARCELONA
Tipo: Artigo de Revista Científica
Português
Two case studies are presented to describe the process of public school teachers authoring and creating chemistry simulations. They are part of the Virtual Didactic Laboratory for Chemistry, a project developed by the School of the Future of the University of Sao Paulo. the documental analysis of the material produced by two groups of teachers reflects different selection process for both themes and problem-situations when creating simulations. The study demonstrates the potential for chemistry learning with an approach that takes students' everyday lives into account and is based on collaborative work among teachers and researches. Also, from the teachers' perspectives, the possibilities of interaction that a simulation offers for classroom activities are considered.

Escalas concorrentes para a mensuração da qualidade percebida: uma comparação entre a SERVQUAL e a RSQ; COMPETING SCALES FOR MEASURING THE PERCEIVED QUALITY: A COMPARISON BETWEEN THE SERVQUAL AND RSQ

LOPES, Evandro Luiz; HERNANDEZ, Jose Mauro da Costa; NOHARA, Jouliana Jordan
Fonte: FUNDACAO GETULIO VARGAS Publicador: FUNDACAO GETULIO VARGAS
Tipo: Artigo de Revista Científica
Português
There is no doubt about the importance of service quality as a factor of businesses' success, but to measure this quality has proved to be a challenge when one considers different environmental contexts. Given this, the main goal of this paper was to test two measurement scales of perceived set-vice quality. The comparison between Service Quality scale (Servqual) and Retail Set-vice Quality (RSQ) was conducted by means of a survey with 351 participants, clients of a home center stores chain located in the city of Sao Paulo. The data were analyzed using both exploratory and confirmatory factor analysis. As a result, both scales demonstrated acceptable levels of reliability and validity However; the RSQ demonstrated a better performance in the nomological test since it was able to explain 43% of the loyalty towards the retailer; while the Servqual scale explained only 11%.

The full Bayesian significance test for mixture models: results in gene expression clustering

LAURETTO, M. S.; PEREIRA, C. A. B.; STERN, J. M.
Fonte: FUNPEC-EDITORA Publicador: FUNPEC-EDITORA
Tipo: Artigo de Revista Científica
Português
Gene clustering is a useful exploratory technique to group together genes with similar expression levels under distinct cell cycle phases or distinct conditions. It helps the biologist to identify potentially meaningful relationships between genes. In this study, we propose a clustering method based on multivariate normal mixture models, where the number of clusters is predicted via sequential hypothesis tests: at each step, the method considers a mixture model of m components (m = 2 in the first step) and tests if in fact it should be m - 1. If the hypothesis is rejected, m is increased and a new test is carried out. The method continues (increasing m) until the hypothesis is accepted. The theoretical core of the method is the full Bayesian significance test, an intuitive Bayesian approach, which needs no model complexity penalization nor positive probabilities for sharp hypotheses. Numerical experiments were based on a cDNA microarray dataset consisting of expression levels of 205 genes belonging to four functional categories, for 10 distinct strains of Saccharomyces cerevisiae. To analyze the method's sensitivity to data dimension, we performed principal components analysis on the original dataset and predicted the number of classes using 2 to 10 principal components. Compared to Mclust (model-based clustering)...

Differences in early biomechanical properties after myopic and hyperopic lasik using mechanical microkeratome Sub-Bowman's Keratomileusis (SBK)

Valbon, Bruno de Freitas; Silva, Jorge Siqueira; Oliveira Ramos, Isaac C.; Correa, Rosane; Canedo, Ana Laura; Santos, Rodrigo Teixeira; Ambrosio, Renato, Jr.
Fonte: SOC BRASILEIRA OFTALMOLOGIA; RIO DE JANEIRO Publicador: SOC BRASILEIRA OFTALMOLOGIA; RIO DE JANEIRO
Tipo: Artigo de Revista Científica
Português
Purpose: To evaluate biomechanical changes measured with the ORA (Ocular Response Analyzer (R); Reichert Ophthalmic Instruments, Buffalo, New York, USA) after Lasik with the Moria One Use Plus and to compare the biomechanics changes after myopic and hyperopic ablations. Methods: Fourteeneyes for hyperopia (H) and 19 eyes for myopia (M) were evaluated with the ORA preoperatively and 1 month after Lasik with thin flap (100 microns) using SBK-OUP (Sub-Bowman Keratomileusis-One Use Plus, Moria (R)). CH (Corneal Hysteresis), CRF (Corneal Resistance Factor), IOPg (gold-standard, Goldmann correlated Intraocular pressure), IOPcc (Corneal compensated Intraocular pressure) and more 38 variables derived from the corneal biomechanical response signal of the ORA were analyzed. The Wilcoxon test was used to assess differences between the variables before and after surgery for each group and the differences between the pre and postoperative (1 month) myopic eyes were compared with those obtained in hyperopic eyes, using the Mann-Whitney test. Results: There was a significant difference before and after Lasik in myopic and hyperopic eyes in IOPg (Wilcoxon, p<0.05), but not in IOPcc. Only myopic eyes showed a significant difference in CH and CRF measurements before and after LASIK...

Resistance to Flexural Fatigue of Reciproc R25 Files under Continuous Rotation and Reciprocating Movement

Gavini, Giulio; Caldeira, Celso Luiz; Akisue, Eduardo; Candeiro, George Táccio de Miranda; Kawakami, Dirce Akemi Sacaguti
Fonte: ELSEVIER SCIENCE INC; NEW YORK Publicador: ELSEVIER SCIENCE INC; NEW YORK
Tipo: Artigo de Revista Científica
Português
Introduction: The aim of the present work was to evaluate the resistance to flexural fatigue of Reciproc R25 nickel-titanium files, 25 mm, used in continuous rotation motion or reciprocation motion, in dynamic assays device. Methods: Thirty-six Reciproc R25 files were divided into 2 groups (n = 18) according to kinematics applied, continuous rotary (group CR) and reciprocation motion (group RM). The files were submitted to dynamic assays device moved by an electric engine with 300 rpm of speed that permitted the reproduction of pecking motion. The files run on a ring's groove of temperate steel, simulating instrumentation of a curved root canal with 400 and 5 mm of curvature radius. The fracture of file was detected by sensor of device, and the time was marked. The data were analyzed statistically by Student's t test, with level of significance of 95%. Results: The instruments moved by reciprocating movement reached significantly higher numbers of cycles before fracture (mean, 1787.78 cycles) when compared with instruments moved by continuous rotary (mean, 816.39 cycles). Conclusions: The results showed that the reciprocation motion improves flexural fatigue resistance in nickel-titanium instrument Reciproc R25 when compared with continuous rotation movement. (J Endod 2012;38:684-687)

Variance Effective Population Size for Dioecious Species

Vencovsky, Roland; Chaves, Lazaro Jose; Crossa, Jose
Fonte: CROP SCIENCE SOC AMER; MADISON Publicador: CROP SCIENCE SOC AMER; MADISON
Tipo: Artigo de Revista Científica
Português
The concept of effective population size (N(e)) is an important measure of representativeness in many areas. In this research, we consider the statistical properties of the number of contributed gametes under practical situations by adapting Crow and Denninston's (1988) N(e) formulas for dioecious species. Three sampling procedures were considered. In all circumstances, results show that as the offspring sex ratio (r) deviates from 0.5, N(e) values become smaller, and the efficiency of gametic control for increasing N(e) is reduced. For finite populations, where all individuals are potentially functional parents, the reduction in N(e) due to an unequal sex ratio can be compensated for through female gametic control when 0.28 <= r <= 0.72. This outcome is important when r is unknown. When only a fraction of the individuals in a population is taken for reproduction, N(e) is meaningful only if the size of the reference population is clearly defined. Gametic control is a compensating factor in accession regeneration when the viability of the accession is around 70 or 75%. For germ-plasm collection, when parents are a very small fraction of the population, maximum N(e) will be approximately 47 and 57% of the total number of offspring sampled...

Production of K*(892)(0) and phi(1020) in pp collisions at root s=7 TeV

Abelev, B.; Adam, J.; Adamova, D.; Adare, A. M.; Aggarwal, M. M.; Rinella, G. Aglieri; Agocs, A. G.; Agostinelli, A.; Aguilar Salazar, S.; Ahammed, Z.; Masoodi, A. Ahmad; Ahmad, N.; Ahn, S. U.; Akindinov, A.; Aleksandrov, D.; Alessandro, B.; Alfaro Molina
Fonte: SPRINGER; NEW YORK Publicador: SPRINGER; NEW YORK
Tipo: Artigo de Revista Científica
Português
The production of K*(892)(0) and phi(1020) in pp collisions at root s = 7 TeV was measured by the ALICE experiment at the LHC. The yields and the transverse momentum spectra d(2)N/dydp(T) at midrapidity vertical bar y vertical bar < 0.5 in the range 0 < p(T) < 6 GeV/c for K*(892)(0) and 0.4 < p(T) < 6 GeV/c for phi(1020) are reported and compared to model predictions. Using the yield of pions, kaons, and Omega baryons measured previously by ALICE at root s = 7 TeV, the ratios K*/K-, phi/K*, phi/ K-, phi/pi(-), and (Omega + <(Omega)over bar>)/phi are presented. The values of the K*/K-, phi/K* and phi/K- ratios are similar to those found at lower centre-of-mass energies. In contrast, the phi/pi(-) ratio, which has been observed to increase with energy, seems to saturate above 200 GeV. The (Omega + (Omega) over bar)/phi ratio in the p(T) range 1-5 GeV/ c is found to be in good agreement with the prediction of the HIJING/B (B) over bar v2.0model with a strong colour field.; Calouste Gulbenkian Foundation from Lisbon; Calouste Gulbenkian Foundation from Lisbon; Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq); Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq); Financiadora de Estudos e Projetos (FINEP); Financiadora de Estudos e Projetos (FINEP); Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP); Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP); National Natural Science Foundation of China (NSFC); National Natural Science Foundation of China (NSFC); Chinese Ministry of Education (CMOE); Chinese Ministry of Education (CMOE); Ministry of Science and Technology of China (MSTC); Ministry of Science and Technology of China (MSTC); Ministry of Education and Youth of the Czech Republic; Ministry of Education and Youth of the Czech Republic; Danish Natural Science Research Council; Danish Natural Science Research Council; Carlsberg Foundation; Carlsberg Foundation; Danish National Research Foundation; Danish National Research Foundation; European Research Council under the European Community; European Research Council under the European Community; Helsinki Institute of Physics; Helsinki Institute of Physics; Academy of Finland; Academy of Finland; French CNRSIN2P3...

COMMUNITY OF ORIGIN EFFECTS ON VIRTUAL BRAND COMMUNITIES PARTICIPANT

de Almeida, Stefania Ordovas; Mazzon, Jose Atonso; Mueller Neto, Hugo Fridolino; Dholakia, Utpal
Fonte: FUNDACAO GETULIO VARGAS; SAO PAULO SP Publicador: FUNDACAO GETULIO VARGAS; SAO PAULO SP
Tipo: Artigo de Revista Científica
Português
The question about the effectiveness of companies in maintaining their own communities versus benefiting from the ones owned by consumers remains open. We examine differences between firm-managed and customer-managed brand communities regarding the impact of perceived psychographic homogeneity, availability of virtual avenues and relationship with the brand on the community's influence on members and the assessments and intentions of community participants. Data were obtained from 555 respondents in two leading Microsoft XBOX brand communities in Brazil. Results indicate that management of the community of origin is the moderator of all considered relationships. Also, the most favorable effects for the company occur in the community that is not directly controlled and managed by the company itself. Brand loyalty, however, is higher for members of the official brand community. Guidelines on how companies can benefit from consumer-managed communities are discussed.

Abdominoperineal Excision: Evolution of a Centenary Operation

Campos, Fabio Guilherme; Habr-Gama, Angelita; Nahas, Sergio Carlos; Perez, Rodrigo Oliva
Fonte: LIPPINCOTT WILLIAMS & WILKINS; PHILADELPHIA Publicador: LIPPINCOTT WILLIAMS & WILKINS; PHILADELPHIA
Tipo: Artigo de Revista Científica
Português
During the last century, great improvements have been made in rectal cancer management regarding preoperative staging, pathologic assessment, surgical technique, and multimodal therapies. Surgically, there was a move from a strategy characterized by simple perineal excision to complex procedures performed by means of a laparoscopic approach, and more recently with the aid of robotic systems. Perhaps the most important advance is that rectal cancer is no longer a fatal disease as it was at the beginning of the 20th century. This achievement is definitely due in part to Ernest Mile's contribution regarding lymphatic spread of tumor cells, which helped clarify the natural history of the disease and the proper treatment alternatives. He advocated a combined approach with the rationale to clear "the zone of upward spread." The aim of the present paper is to present a brief review concerning the evolution of rectal cancer surgery, focusing attention on Miles' abdominoperineal excision of the rectum (APR) and its controversies and refinements over time. Although APR has currently been restricted to a small proportion of patients with low rectal cancer, recent propositions to excise the rectum performing a wider perineal and a proper pelvic floor resection have renewed interest on this procedure...

Ectopic expression of a fruit phytoene synthase from Citrus paradisi Macf. promotes abiotic stress tolerance in transgenic tobacco

Cidade, Luciana C.; de Oliveira, Tahise M.; Mendes, Amanda F. S.; Macedo, Amanda F.; Floh, Eny Iochevet Segal; Gesteira, Abelmon S.; Soares-Filho, Walter S.; Costa, Marcio G. C.
Fonte: SPRINGER; DORDRECHT Publicador: SPRINGER; DORDRECHT
Tipo: Artigo de Revista Científica
Português
Abscisic acid (ABA) is an important regulator of plant responses to environmental stresses and an absolute requirement for stress tolerance. Recently, a third phytoene synthase (PSY3) gene paralog was identified in monocots and demonstrated to play a specialized role in stress-induced ABA formation, thus suggesting that the first committed step in carotenogenesis is a key limiting step in ABA biosynthesis. To examine whether the ectopic expression of PSY, other than PSY3, would similarly affect ABA level and stress tolerance, we have produced transgenic tobacco containing a fruit-specific PSY (CpPSY) of grapefruit (Citrus paradisi Macf.). The transgenic plants contained a single- or double-locus insertion and expressed CpPSY at varying transcript levels. In comparison with the wild-type plants, the CpPSY expressing transgenic plants showed a significant increase on root length and shoot biomass under PEG-, NaCl- and mannitol-induced osmotic stress. The enhanced stress tolerance of transgenic plants was correlated with the increased endogenous ABA level and expression of stress-responsive genes, which in turn was correlated with the CpPSY copy number and expression level in different transgenic lines. Collectively, these results provide further evidence that PSY is a key enzyme regulating ABA biosynthesis and that the altered expression of other PSYs in transgenic plants may provide a similar function to that of the monocot's PSY3 in ABA biosynthesis and stress tolerance. The results also pave the way for further use of CpPSY...

Sets of probability distributions, independence, and convexity

Cozman, Fabio Gagliardi
Fonte: SPRINGER; DORDRECHT Publicador: SPRINGER; DORDRECHT
Tipo: Artigo de Revista Científica
Português
This paper analyzes concepts of independence and assumptions of convexity in the theory of sets of probability distributions. The starting point is Kyburg and Pittarelli's discussion of "convex Bayesianism" (in particular their proposals concerning E-admissibility, independence, and convexity). The paper offers an organized review of the literature on independence for sets of probability distributions; new results on graphoid properties and on the justification of "strong independence" (using exchangeability) are presented. Finally, the connection between Kyburg and Pittarelli's results and recent developments on the axiomatization of non-binary preferences, and its impact on "complete" independence, are described.; CNPq; CNPq; FAPESP; FAPESP [04/09568-0, 08/03995-5]

Determinants of discordance in patients' and physicians' rating of rheumatoid arthritis disease activity

Khan, Nasim A.; Spencer, Horace J.; Abda, Esam; Aggarwal, Amita; Alten, Rieke; Ancuta, Codrina; Andersone, Daina; Bergman, Martin; Craig-Muller, Jurgen; Detert, Jacqueline; Georgescu, Lia; Gossec, Laure; Hamoud, Hisham; Jacobs, Johannes W. G.; Magalhaes L
Fonte: WILEY-BLACKWELL; MALDEN Publicador: WILEY-BLACKWELL; MALDEN
Tipo: Artigo de Revista Científica
Português
Objective To assess the determinants of patients' (PTGL) and physicians' (MDGL) global assessment of rheumatoid arthritis (RA) activity and factors associated with discordance among them. Methods. A total of 7,028 patients in the Quantitative Standard Monitoring of Patients with RA study had PTGL and MDGL assessed at the same clinic visit on a 0-10-cm visual analog scale (VAS). Three patient groups were defined: concordant rating group (PTGL and MDGL within >= 2 cm), higher patient rating group (PTGL exceeding MDGL by > 2 cm), and lower patient rating group (PTGL less than MDGL by > 2 cm). Multivariable regression analysis was used to identify determinants of PTGL and MDGL and their discordance. Results. The mean +/- SD VAS scores for PTGL and MDGL were 4.01 +/- 2.70 and 2.91 +/- 2.37, respectively. Pain was overwhelmingly the single most important determinant of PTGL, followed by fatigue. In contrast, MDGL was most influenced by swollen joint count (SJC), followed by erythrocyte sedimentation rate (ESR) and tender joint count (TJC). A total of 4,454 (63.4%), 2,106 (30%), and 468 (6.6%) patients were in the concordant, higher, and lower patient rating groups, respectively. Odds of higher patient rating increased with higher pain...

Multivariate analysis of fresh-cut carambola slices stored under different temperatures

Teixeira, Gustavo H. A.; Durigan, Jose F.; Ferraudo, Antonio S.; Alves, Ricardo E.; O'Hare, Timothy J.
Fonte: ELSEVIER SCIENCE BV; AMSTERDAM Publicador: ELSEVIER SCIENCE BV; AMSTERDAM
Tipo: Artigo de Revista Científica
Português
Quality of fresh-cut carambola (Averrhoa carambola L) is related to many chemical and biochemical variables especially those involved with softening and browning, both influenced by storage temperature. To study these effects, a multivariate analysis was used to evaluate slices packaged in vacuum-sealed polyolefin bags, and stored at 2.5 degrees C, 5 degrees C and 10 degrees C, for up to 16 d. The quality of slices at each temperature was correlated with the duration of storage, O(2) and CO(2) concentration in the package, physical chemical constituents, and activity of enzymes involved in softening (PG) and browning (PPO) metabolism. Three quality groups were identified by hierarchical cluster analysis, and the classification of the components within each of these groups was obtained from a principal component analysis (PCA). The characterization of samples by PCA clearly distinguished acceptable and non-acceptable slices. According to PCA, acceptable slices presented higher ascorbic acid content, greater hue angles ((o)h) and final lightness (L-5) in the first principal component (PC1). On the other hand, non-acceptable slices presented higher total pectin content. PPO activity in the PC1. Non-acceptable slices also presented higher soluble pectin content...

Effect of age at disease onset in the clinical profile of spondyloarthritis: a study of 1424 Brazilian patients

Skare, T. L.; Leite, N.; Bortoluzzo, A. B.; Goncalves, C. R.; da Silva, J. A. B.; Ximenes, A. C.; Bertolo, M. B.; Ribeiro, S. L. E.; Keiserman, M.; Menin, R.; Carneiro, S.; Azevedo, V. F.; Vieira, W. P.; Albuquerque, E. N.; Bianchi, W. A.; Bonfiglioli, R.
Fonte: CLINICAL & EXPER RHEUMATOLOGY; PISA Publicador: CLINICAL & EXPER RHEUMATOLOGY; PISA
Tipo: Artigo de Revista Científica
Português
Objectives To analyse demographic and clinical variables in patients with disease onset before and after 40, 45 and 50 years in a large series of Brazilian SpA patients. Methods A common protocol of investigation was prospectively applied to 1424 SpA patients in 29 centres distributed through the main geographical regions in Brazil. The mean age at disease onset was 28.56 +/- 12.34 years, with 259 patients (18.2%) referring disease onset after 40 years, 15.1 (10.6%) after 45 years and 81 (5.8%) after 50 years. Clinical and demographic variables and disease indices (BASDAI, BASFI, BASRI, MASES, ASQoL) were investigated. Ankylosing spondylitis was the most frequent disease (66.3%), followed by psoriatic arthritis (18%), undifferentiated SpA (6.7%), reactive arthritis (5.5%), and enteropathic arthritis (3.5%). Results Comparing the groups according to age of disease onset, those patients with later onset presented statistical association with female gender, peripheral arthritis, dactylitis, nail involvement and psoriasis, as well as negative statistical association with inflammatory low hack pain, alternating buttock pain, radiographic sacroiliitis, hip involvement, positive familial history, HLA-B27 and uveitis. BASDAI, BASFI and quality of life...

Can we predict which patients will evolve to chronic kidney disease after nephrectomy for cortical renal tumors?

Torricelli, Fabio Cesar Miranda; Danilovic, Alexandre; Marchini, Giovanni Scala; Sant'Anna, Alexandre Crippa; Dall'Oglio, Marcos Francisco; Srougi, Miguel
Fonte: BRAZILIAN SOC UROL; RIO DE JANEIRO Publicador: BRAZILIAN SOC UROL; RIO DE JANEIRO
Tipo: Artigo de Revista Científica
Português
Introduction: While some studies show that patients submitted to radical nephrectomy have a higher risk of developing chronic kidney disease (CKD), some studies report that carefully selected living kidney donors do not present a higher risk for CKD. Here, we aim to study predictive factors of CKD after radical nephrectomy. Materials and Methods: Between January 2006 to January 2010, 107 patients submitted to radical nephrectomy for cortical renal tumors at our institution were enrolled in this study. Demographic data were recorded, modified Charlson-Romano Index was calculated, and creatinine clearance was estimated using abbreviated Modification of Diet in Renal Disease (MDRD) study equation. Pathological characteristics, surgical access and surgical complications were also reviewed. The end-point of the current study was new onset estimated glomerular filtration rate (eGFR) less than 60 and less than 45 mL/minute/1.73 m(2). Results: Age, preoperative eGFR, Charlson-Romano Index and hypertension were predictive factors of renal function loss, when the end-point considered was eGFR lower than 60 mL/minute/1.73 m(2). Age and preoperative eGFR were predictive factors of renal function loss, when the end-point considered was eGFR lower than 45 mL/minute/1.73 m2. Moreover...