bluuebunny/crossref_metadata_2025 huggingface dataset:
THE SKEPTICAL CARTESIAN BACKGROUND OF HUME'S "OF THE ACADEMICAL OR SCEPTICAL PHILOSOPHY" (FIRST INQUIRY, SECTION 12)
Authors: Maia Neto José R.
Published: December 2015

ABSTRACT In section XII of the First Inquiry, Hume refers to the two Hellenistic schools of skepticism (Academic and Pyrrhonian) to present his own view of skepticism, which, however, depends on the ancient skeptics mainly indirectly. Hume's view of skepticism depends crucially on Descartes and post-Cartesian philosophers such as Pascal, Huet, Foucher and Bayle, who reacted skeptically to major Cartesian doctrines but followed one version or other of Descartes's methodical doubt. Although all these post-Cartesian philosophers are relevant in section XII, I focus on the topics in which Descartes himself-besides his skeptical followers-seems directly relevant. After an introductory section (I) on Julia Annas' and Richard Popkin's views of Hume's relation to, respectively, ancient and modern skepticism, I turn to section XII and examine what Hume calls (II) "consequent skepticism about the senses," (III) "antecedent skepticism," and (IV) "Academic skepticism."
DISCRIMINAÇÃO PRIVADA E O SEGUNDO PRINCÍPIO DA JUSTIÇA DE RAWLS
Authors: Zanitelli Leandro Martins
Published: December 2015

RESUMO O artigo examina se há alguma incompatibilidade entre práticas de discriminação privada (por exemplo, a discriminação no emprego e em associações, como clubes) e as duas partes do segundo princípio da justiça de Rawls, o princípio da equitativa igualdade de oportunidades (PEIO) e o princípio da diferença (PD). Argumento que a discriminação no trabalho e em outras áreas importantes para o desenvolvimento das aptidões inatas (como a educação e a saúde) somente atenta contra o PEIO quando tem como efeito geral o de tornar substancialmente desiguais as chances de cidadãos com similares aptidões inatas e motivação exercerem determinadas ocupações. Comento também algumas dificuldades para considerar vedados pelo PEIO dois casos comuns de discriminação, a discriminação baseada em qualidade de reação e a discriminação por indicadores. Em relação ao PD, defendo que a proibição à discriminação privada se relaciona ao bem primário das bases sociais do autorrespeito e está circunscrita aos casos de discriminação degradante, como tal entendida, de acordo com Hellman (2008), aquela cujo sentido expressivo é o de negar o igual status moral das pessoas pertencentes a um certo grupo.
DIALÉTICA NEGATIVA E MATERIALISMO DIALÉTICO: DA SUBJETIVIDADE DECOMPOSTA À OBJETIVIDADE PERVERTIDA
Authors: Zanolla Silvia Rosa da Silva
Published: December 2015

RESUMO O trabalho apresenta uma discussão polêmica, complexa e enigmática para a teoria do conhecimento: a elaboração da dialética negativa na concepção da teoria crítica frankfurtiana – sobretudo, adorniana – na interface com a dialética materialista, do marxismo. Do estudo emerge uma proposta de reestruturação do universo objetivo no sentido de indicar elementos subjetivos – por intermédio da teoria psicanalítica – como possibilidade de superação do estado da alienação ampla: intelectual, política, cultural e humana. Trata de confrontar aspectos metodológicos, teóricos e subjetivos em âmbito social amparado por uma perspectiva crítica. As contribuições, para além dos embates entre o idealismo clássico e o materialismo moderno, atravessam, entre outras, as perspectivas heideggeriana, hegeliana, kantiana, freudiana, marxiana e adorniana, visando apresentar fundamentos epistemológicos e teóricos que embasam a teoria crítica ao tempo que identifica diferenças e convergências entre o materialismo sócio-histórico dialético e a dialética negativa; componentes relevantes para compreender a incursão desta teoria no âmbito das diversas áreas do conhecimento.
Esophagectomy with gastroplasty in advanced megaesophagus: late results of omeprazole use
Authors: Pochini Celso de Castro , Gagliardi Danilo , Saad Júnior Roberto , Almeida Ruy França de , Corsi Paulo Roberto
Published: December 2015

Objective: To analyze the late results of advanced Chagasic megaesophagus treatment by esophagectomy associated with the use of proton pump inhibitor (omeprazole) as for the incidence of esophagitis and Barrett's esophagus in the remaining stump. Methods : We studied patients with advanced megaesophagus undergoing esophagectomy and transmediastinal esophagogastroplasty. Patients were divided into three groups: A (20) with esophageal replacement by full stomach, without the use of omeprazole; B (20) with esophageal replacement by full stomach, with omeprazole 40 mg/day introduced after the first postoperative endoscopy and maintained for six years; and C (30) with esophageal replacement by gastric tube with use of omeprazole. Dysphagia, weight loss and BMI were clinical parameters we analyzed. Upper gastrointestinal endoscopy was performed in all patients, and determined the height of the anastomosis, the aspect of the mucosa, with special attention to possible injuries arising from gastroesophageal reflux, and the patency of the esophagogastric anastomosis. Results : We studied 50 patients, 28 males (56%) and 22 (44%) females. All underwent endoscopy every year. In the first endoscopy, erosive esophagitis was present in nine patients (18%) and Barrett's esophagus, in four (8%); in the last endoscopy, erosive esophagitis was present in five patients (8%) and Barrett's esophagus in one (2%). When comparing groups B and C, there was no evidence that the manufacturing of a gastric tube reduced esophagitis and Barrett's esophagus. However, when comparing groups A and C, omeprazole use was correlated with reduction of reflux complications such as esophagitis and Barrett's esophagus (p <0.005). Conclusion : The use of omeprazole (40 mg/day) reduced the onset of erosive esophagitis and Barrett's esophagus during the late postoperative period.
Video assisted resections. Increasing access to minimally invasive liver surgery?
Authors: Coelho Fabricio Ferreira , Perini Marcos Vinícius , Kruger Jaime Arthur Pirola , Lupinacci Renato Micelli , Makdissi Fábio Ferrari , D'Albuquerque Luiz Augusto Carneiro , Cecconello Ivan , Herman Paulo
Published: December 2015

Objective: To evaluate perioperative outcomes, safety and feasibility of video-assisted resection for primary and secondary liver lesions. Methods : From a prospective database, we analyzed the perioperative results (up to 90 days) of 25 consecutive patients undergoing video-assisted resections in the period between June 2007 and June 2013. Results : The mean age was 53.4 years (23-73) and 16 (64%) patients were female. Of the total, 84% were suffering from malignant diseases. We performed 33 resections (1 to 4 nodules per patient). The procedures performed were non-anatomical resections (n = 26), segmentectomy (n = 1), 2/3 bisegmentectomy (n = 1), 6/7 bisegmentectomy (n = 1), left hepatectomy (n = 2) and right hepatectomy (n = 2). The procedures contemplated postero-superior segments in 66.7%, requiring multiple or larger resections. The average operating time was 226 minutes (80-420), and anesthesia time, 360 minutes (200-630). The average size of resected nodes was 3.2 cm (0.8 to 10) and the surgical margins were free in all the analyzed specimens. Eight percent of patients needed blood transfusion and no case was converted to open surgery. The length of stay was 6.5 days (3-16). Postoperative complications occurred in 20% of patients, with no perioperative mortality. Conclusion : The video-assisted liver resection is feasible and safe and should be part of the liver surgeon armamentarium for resection of primary and secondary liver lesions.
Basic skills for outpatient surgery in medical graduation
Authors: Purim Kátia Sheylla Malta , Skinovsky James , Fernandes Júlio Wilson
Published: December 2015

Medical students must have domain of basic surgery skills before starting more advanced stages of surgical learning. The authors present a practical and reproducible system of operative techniques circuit, idealized and often applied to the fourth year medical students of a private educational institution. This method has enabled accurate assessment of students' skills, improving their performance and preparing them for more advanced stages of the surgical learning.
Sheep Excreta as Source of Nitrous Oxide in Ryegrass Pasture in Southern Brazil
Authors: Tomazi Michely , Magiero Emanuelle Cavazini , Assmann Joice Mari , Bagatini Tatiane , Dieckow Jeferson , Carvalho Paulo Cesar de Faccio , Bayer Cimélio
Published: December 2015

ABSTRACT Livestock urine and dung are important components of the N cycle in pastures, but little information on its effect on soil nitrous oxide (N2O) emissions is available. We conducted a short-term (39-day) trial to quantify the direct N2O-N emissions from sheep excreta on an experimental area of ryegrass pasture growing on a Typic Paleudult in southern Brazil. Four rates of urine-N (161, 242, 323, and 403 kg ha-1 N) and one of dung-N (13 kg ha-1 N) were applied, as well as a control plot receiving no excreta. The N2O-N emission factor (EF = % of added N released as N2O-N) for urine and dung was calculated, taking into account the N2O fluxes in the field, over a period of 39 days. The EF value of the urine and dung was used to estimate the emissions of N2O-N over a 90-day period of pasture in the winter under two grazing intensities (2.5 or 5.0 times the herbage intake potential of grazing lambs). The soil N2O-N fluxes ranged from 4 to 353 µg m-2h-1. The highest N2O-N fluxes occurred 16 days after application of urine and dung, when the highest soil nitrate content was also recorded and the water-filled pore space exceeded 60 %. The mean EF for urine was 0.25 % of applied N, much higher than that for dung (0.06 %). We found that N2O-N emissions for the 90-day winter pasture period were 0.54 kg ha-1 for low grazing intensity and 0.62 kg ha-1 for moderate grazing intensity. Comparison of the two forms of excreta show that urine was the main contributor to N2O-N emissions (mean of 36 %), whereas dung was responsible for less than 0.1 % of total soil N2O-N emissions.
Soil Compaction Curve of an Oxisol Under Sugarcane Planted After In-row Deep Tillage
Authors: Marasca Indiamara , Lemos Stella Vannucci , Silva Reginaldo Barbosa , Guerra Saulo Philipe Sebastião , Lanças Kleber Pereira
Published: December 2015

ABSTRACT Soil tillage that maintains the productivity of sugarcane plantations, providing an area for the root development and without traffic on crop rows, has given rise to new technologies in rural areas. The purpose of this study was to evaluate the soil physical properties in two sugarcane plantations, one of which was prepared with deep tilling and the other with conventional tillage. The experiment was conducted in Lençóis Paulista, São Paulo State. Soil penetration resistance and relative density were analyzed. The cone index was lower in deep-tilled soil without traffic in all layers, than in deep-tilled soil with traffic and in conventional tillage. In both tillage treatments, the relative density values were acceptable in the 0.00-0.15 m soil layer, but considered detrimental for sugarcane development in the 0.15-0.30 and 0.30-0.45 m layers.
Variabilidade Espacial da Resistência à Penetração em Neossolo Litólico Degradado
Authors: Corado Neto Fabriciano da Cunha , Sampaio Fabricio de Menezes Telo , Veloso Marcos Emanuel da Costa , Matias Sammy Sidney Rocha , Andrade Fabricio Ribeiro , Lobato Marcio Godofredo Rocha
Published: December 2015

RESUMO A resistência à penetração permite avaliar o comportamento do solo diante do manejo adotado. Este estudo teve como objetivo avaliar o comportamento da resistência à penetração nos períodos seco e chuvoso por meio da variabilidade espacial em uma área degradada em Gilbués, PI. O estudo foi conduzido em uma área experimental de 4 ha, pertencente à Embrapa Meio Norte, no período de 2010/2011. O solo da área é um Neossolo Litólico Eutrófico com exposição do horizonte C. Construíram-se um grid irregular e uma transecção próximos à parte central da área, espaçada da seguinte forma: os pontos de número 1 a 21 apresentaram espaçamento de 30 × 30 m; de 22 a 52, distanciamento a cada 5 m; de 52 a 53, com 15 m de espaçamento; e de 54 a 79, a cada 30 m, totalizando 79 pontos. Em cada ponto, foi verificada a resistência à penetração e coletadas amostras com estrutura alterada de solo para ser quantificada a umidade do solo, em três profundidades (0,00-0,10; 0,10-0,20 e 0,20-0,30 m) nos períodos seco e chuvoso. A resistência à penetração do solo evidenciou, em geral, moderada dependência espacial nos períodos seco e chuvoso. A umidade influenciou fortemente os valores de resistência à penetração no período chuvoso.
Liming in Agricultural Production Models with and Without the Adoption of Crop-Livestock Integration
Authors: Silva Francisco Carlos Mainardes da , Sachs Luís Guilherme , and Inês Cristina Batista Fonseca , Tavares Filho João
Published: December 2015

ABSTRACT Perennial forage crops used in crop-livestock integration (CLI) are able to accumulate large amounts of straw on the soil surface in no-tillage system (NTS). In addition, they can potentially produce large amounts of soluble organic compounds that help improving the efficiency of liming in the subsurface, which favors root growth, thus reducing the risks of loss in yield during dry spells and the harmful effects of “overliming”. The aim of this study was to test the effects of liming on two models of agricultural production, with and without crop-livestock integration, for 2 years. Thus, an experiment was conducted in a Latossolo Vermelho (Oxisol) with a very clayey texture located in an agricultural area under the NTS in Bandeirantes, PR, Brazil. Liming was performed to increase base saturation (V) to 65, 75, and 90 % while one plot per block was maintained without the application of lime (control). A randomized block experimental design was adopted arranged in split-plots and four plots/block, with four replications. The soil properties evaluated were: pH in CaCl2, soil organic matter (SOM), Ca, Mg, K, Al, and P. The effects of liming were observed to a greater depth and for a long period through mobilization of ions in the soil, leading to a reduction in SOM and Al concentration and an increase in pH and the levels of Ca and Mg. In the first crop year, adoption of CLI led to an increase in the levels of K and Mg and a reduction in the levels of SOM; however, in the second crop year, the rate of decline of SOM decreased compared to the decline observed in the first crop year, and the level of K increased, whereas that of P decreased. The extent of the effects of liming in terms of depth and improvement in the root environment from the treatments were observed only partially from the changes observed in the chemical properties studied.
Atributos Físicos, Macro e Micromorfológicos de Neossolos Regolíticos no Agreste Meridional de Pernambuco
Authors: Almeida Alison Van Der Linden de , Corrêa Marcelo Metri , Lima José Romualdo de Sousa , Souza Eduardo Soares de , Santoro Kleber Régis , Antonino Antonio Celso Dantas
Published: December 2015

RESUMO Neossolos Regolíticos no Agreste Meridional de Pernambuco são utilizados para diversas atividades agrícolas, com destaque para a produção de feijão. Há uma variação expressiva na produção dessa cultura, possivelmente associada à presença de lamelas, que conferem comportamento hídrico distinto entre esses solos. Objetivou-se analisar as características macromorfológicas, micromorfológicas e físicas de Neossolos Regolíticos localizados no Agreste Meridional de Pernambuco, com a finalidade de se entender o comportamento hídrico desses solos. Foram coletados e analisados dois perfis de solos localizados nos municípios de Paranatama (P1 - sem lamela) e de São João (P2 - com lamela). Os resultados mostraram que nos atributos morfológicos (cor, textura, estrutura e consistência) não foram observadas diferenças expressivas entre os dois perfis de solos; os atributos físicos (teor de argila, macroporosidade, microporosidade, capacidade de campo e ponto de murcha permanente) apresentaram diferença significativa entre os horizontes dos perfis estudados; a micromorfologia indicou que a maior retenção de água no P2 é consequência da presença de zonas com empacotamento mais denso de seus componentes (empacotamento aglomerático) e expressividade das pontes de argila; e sugere-se adoção do termo “lamélico” pelo atual Sistema Brasileiro de Classificação de Solos (em 4º nível categórico) para diferenciação dos perfis estudados.
Formas de Alumínio em Solos Ácidos Brasileiros com Teores Excepcionalmente Altos de Al3+ Extraível com KCI
Authors: Cunha Gabriel Octávio de Mello , Almeida Jaime Antonio de , Testoni Samara Alves , Barboza Bethina Bastos
Published: December 2015

RESUMO O Al trocável é tradicionalmente quantificado no extrato da solução de KCl 1 mol L-1; entretanto, nem sempre o Al provém unicamente de formas trocáveis desse elemento. Este trabalho objetivou investigar as formas de Al presentes em solos ácidos de várias regiões brasileiras, com distintas mineralogias, buscando elucidar se todo o Al-KCl corresponde às formas trocáveis do elemento. Foram testados os seguintes extratores para Al: Método tradicional (KCl 1 mol L-1), e variações desse método (curvas de titulação potenciométrica, método das extrações sucessivas e tamponado a pH 5), KCl 0,1 mol L-1, CaCl2 0,01 mol L-1, oxalato de amônio 0,2 mol L-1, pirofosfato de sódio 0,1 mol L-1 e CuCl2 0,5 mol L-1. A quantificação do elemento foi feita por titulação e, ou, por espectrofotometria de absorção atômica (EAA), quando pertinente. Foram analisadas amostras de dois horizontes (A e B) de perfis de solo de cinco estados brasileiros (AC, PE, BA, RS e SC). Dois perfis de solo de Santa Catarina, com níveis mais baixos de Al-KCl, foram utilizados como referência de solos mais intemperizados, com mineralogia caulinítica. Os resultados demonstraram que, particularmente nos solos ácidos com esmectitas, o KCl 1 mol L-1 extrai outras formas de Al além da trocável, superestimando seus valores, não sendo, portanto, um extrator indicado para a maioria dos solos analisados neste estudo. No entanto, a utilização dessa solução, porém mais diluída (KCl 0,1 mol L-1), teve menor efeito na dissolução desses compostos, podendo indicar de forma mais realista os teores de Al trocáveis do solo. As demais variações desse método (tampão pH 5, método potenciométrico e extrações sucessivas) não se evidenciaram adequadas para determinar esse elemento por extraírem quantidades similares ou até mais altas, quando comparadas com o método tradicional. Os altos teores de Al quantificados nos extratos de oxalato de amônio, cloreto de cobre e pirofosfato de sódio indicaram a participação expressiva de formas inorgânicas amorfas e de baixa cristalinidade, que contribuíram para a superestimação dos teores de Al nos solos estudados.
Brief introductory guide to agent-based modeling and an illustration from urban health research
Authors: Auchincloss Amy H. , Garcia Leandro Martin Totaro
Published: December 2015

Abstract There is growing interest among urban health researchers in addressing complex problems using conceptual and computation models from the field of complex systems. Agent-based modeling (ABM) is one computational modeling tool that has received a lot of interest. However, many researchers remain unfamiliar with developing and carrying out an ABM, hindering the understanding and application of it. This paper first presents a brief introductory guide to carrying out a simple agent-based model. Then, the method is illustrated by discussing a previously developed agent-based model, which explored inequalities in diet in the context of urban residential segregation.
Self-rated health in urban adults, perceptions of the physical and social environment, and reported comorbidities: The BH Health Study
Authors: Meireles Adriana Lúcia , Xavier César Coelho , Andrade Amanda Cristina de Souza , Friche Amélia Augusta de Lima , Proietti Fernando Augusto , Caiaffa Waleska Teixeira
Published: December 2015

Abstract This study assesses the prevalence of poor self-rated health and investigates its association with individual and environmental characteristics in adults with and without reported morbidity. A household survey assessed 4,048 adults in two districts of Belo Horizonte, Minas Gerais State, Brazil. We used Poisson regression with robust variance stratified by the presence of reported morbidity. Prevalence of poor self-rated health was 29.9% (42.6% in those with morbidity and 13.1% in the group without morbidity). All assessed domains were associated with self-rated health in subjects with reported morbidity. In the group without reported morbidity, the following were associated with self-rated health: social environment, socio-demographic factors, lifestyle, and psychological health. Perceived problems in the environment were associated with poor self-rated health in both groups, even after hierarchical adjustment. The results suggest the importance of investigating self-rated health stratified by reported morbidity and reinforce the need to include variables that characterize the physical and social environment.
Social networks of men who have sex with men: a study of recruitment chains using Respondent Driven Sampling in Salvador, Bahia State, Brazil
Authors: Brignol Sandra Mara Silva , Dourado Inês , Amorim Leila Denise , Miranda José Garcia Vivas , Kerr Lígia R. F. S.
Published: December 2015

Abstract Social and sexual contact networks between men who have sex with men (MSM) play an important role in understanding the transmission of HIV and other sexually transmitted infections (STIs). In Salvador (Bahia State, Brazil), one of the cities in the survey Behavior, Attitudes, Practices, and Prevalence of HIV and Syphilis among Men Who Have Sex with Men in 10 Brazilian Cities, data were collected in 2008/2009 from a sample of 383 MSM using Respondent Driven Sampling (RDS). Network analysis was used to study friendship networks and sexual partner networks. The study also focused on the association between the number of links (degree) and the number of sexual partners, in addition to socio-demographic characteristics. The networks’ structure potentially facilitates HIV transmission. However, the same networks can also be used to spread messages on STI/HIV prevention, since the proximity and similarity of MSM in these networks can encourage behavior change and positive attitudes towards prevention.
Nutritional status of urban adolescents: individual, household and neighborhood factors based on data from The BH Health Study
Authors: Bispo Stephanie , Correia Maria Isabel Toulson Davisson , Proietti Fernando Augusto , Xavier César Coelho , Caiaffa Waleska Teixeira
Published: December 2015

Abstract The increasing prevalence of overweight in young people suggests that adolescent nutritional status is influenced by environmental factors. Using hierarchical modelling, this study aimed to analyse the association between individual, household and neighborhood factors and adolescent nutritional status and well-being. The study used data from a population-based household survey conducted in Belo Horizonte, the capital of the State of Minas Gerais, Brazil, between 2008 and 2009. Data was obtained from an adult and adolescent in each household using a confidential questionnaire and anthropometric measurements. Adolescent nutritional status was evaluated using multinomial regression analysis considering distal and proximal influences. The prevalence of overweight and thinness among the sample of 1,030 adolescents was 21.9% and 4.6%, respectively. Although variables from all blocks remained in the final model, head of household education level, family habits and family nutritional status were shown to strongly influence adolescent nutritional status. New approaches to public health are needed which focus on raising awareness and promoting health education targeting teenagers and their social context.
Association of socioeconomic factors with body mass index, obesity, physical activity, and dietary factors in Belo Horizonte, Minas Gerais State, Brazil: The BH Health Study
Authors: Ward Julia , Friche Amélia Augusta de Lima , Caiaffa Waleska Teixeira , Proietti Fernando Augusto , Xavier César Coelho , Roux Ana V. Diez
Published: December 2015

Abstract Obesity prevalence is rapidly increasing in developing countries. Existing research investigating social patterning of obesity and its risk factors in Latin American urban contexts has inconsistent findings. This study analyzed a multistage household survey in adults in Belo Horizonte, Minas Gerais State, Brazil. Marginal models were used to examine the association of education and household and neighborhood income with body mass index (BMI), obesity, physical inactivity, and low fruit and vegetable intake after adjusting for age and ethnicity and stratifying by sex. BMI and obesity were inversely associated with education in women. BMI was positively associated with household and neighborhood income in men. Additionally, physical inactivity and low fruit and vegetable intake were inversely associated with education and household income in both men and women, and physical inactivity was inversely associated with neighborhood income in men. Understanding the drivers of these patterns will allow for development of appropriate policy and interventions to reduce cardiovascular disease risk in large cities in Latin America.
The place where you live and self-rated health in a large urban area
Authors: Rodrigues Daiana Elias , César Cibele Comini , Xavier César Coelho , Caiaffa Waleska Teixeira , Proietti Fernando Augusto
Published: December 2015

Abstract The aim of this study was to determine and quantify the association between one’s perception of the place of residence and self-rated health. 4,048 adult residents of Belo Horizonte, Minas Gerais State, Brazil, participated in the study in 2008 and 2009. Ordinal logistic regression was used to estimate the magnitude of the association. Health was rated as good or very good, fair, or poor or very poor by 65.7%, 27.8%, and 6.5% of the subjects, respectively. Better self-rated health was associated with the following neighborhood characteristics: positive evaluation of aesthetics and mobility, better quality of public services, less physical and social disorder. The perception of violence had a borderline statistically significant association with worse self-rated health. These associations persisted after controlling for potential confounding demographic, socioeconomic, health, and health behavior variables. The results indicate that public and health policies should incorporate interventions that address the physical and social environment in addition to policies focused on individuals.
Influence of Organic Acids from the Oral Biofilm on the Bond Strength of Self-Etch Adhesives to Dentin
Authors: Amaral Cristiane Mariote , Correa Danielly de Sá , Miragaya Luciana Meirelles , Silva Eduardo Moreira da
Published: December 2015

Abstract: The aim of this study was to evaluate the microtensile bond strength of self-etch adhesive systems to dentin after storage in acids from oral biofilm. Three adhesive systems were used in the study: a two-step self-etch adhesive for use with a silorane-based resin composite (Filtek P90 adhesive system - P90), a two-step self-etch adhesive (Clearfil SE Bond - CSE) and a one-step self-etch adhesive (Adper Easy One - AEO). The bond strength of these products was evaluated by bonding resin composite (Filtek Z350 for CSE and AEO; and Filtek P90 for P90) to 90 bovine dentin tooth fragments, according to the manufacturer's instructions. After 24 h of water storage at 37 °C, the specimens were sectioned into beams (1 mm2) divided and stored in distilled water, lactic acid and propionic acid, for 7 and 30 days. After storage, the specimens were tested for microtensile bond strength. Data were analyzed by three-way ANOVA and Tukey´s test (α=0.05). CSE presented the highest microtensile bond strength after storage in distilled water for 7 and 30 days. The microtensile bond strength of all adhesive systems was lower after storage in lactic acid and propionic acid than after water storage. Significant difference was not found between storage times.
In Vitro Fit and Cementation Resistance of Provisional Crowns for Single Implant-Supported Restorations
Authors: Moris Izabela Cristina Maurício , Oliveira Juliana Elias de , Faria Adriana Cláudia Lapria , Ribeiro Ricardo Faria , Rodrigues Renata Cristina Silveira
Published: December 2015

Abstract: This study aimed to verify marginal fit and the effect of cement film thickness standardization on retention of provisional crowns made with prefabricated acrylic cylinders on abutments, using two temporary luting agents subjected or not to mechanical cycling. Provisional crowns were made from bis-acryl (Luxatemp Fluorescence) or methyl methacrylate (Duralay) resins on acrylic cylinders and marginal fit and cement film thickness were evaluated. For retention evaluation, crowns were cemented with two temporary luting agents: non-eugenol zinc oxide (Tempbond NE) or calcium hydroxide-based (Hydcal) cements and subjected to tensile strength in a universal testing machine. After cleaning, debonded crowns were cemented again, subjected to mechanical cycling and retention was reassessed. The results of marginal fit and cement film thickness were analyzed by Student's t-test while retention of cements before and after mechanical cycling was analyzed using a mixed linear model. Methyl methacrylate crowns presented greater marginal misfit (p=0.001) and occlusal cement film thickness (p=0.003) than the bis-acryl ones. No difference was observed at axial cement film thickness (p=0.606). Resins (p=0.281) did not affect crown retention, but luting agents (p=0.029) and mechanical cycling (p=0.027) showed significant effects. The only significant interaction was mechanical cycling*luting agents, which means that luting agents were differently affected by mechanical cycling (p=0.002). In conclusion, the results showed that bis-acryl resin associated to calcium-hydroxide luting agent provided the best retention and lower cement thickness.
Viability and Effects on Bacterial Proteins by Oral Rinses with Hypochlorous Acid as Active Ingredient
Authors: Castillo Diana Marcela , Castillo Yormaris , Delgadillo Nathaly Andrea , Neuta Yineth , Jola Johana , Calderón Justo Leonardo , Lafaurie Gloria Inés
Published: December 2015

Abstract: This study investigated the effect of hypochlorous acid (HOCl) rinses and chlorhexidine (CHX) on the bacterial viability of S. mutans, A. israelii, P. gingivalis, A. actinomycetemcomitans, E. corrodens, C. rectus, K. oxytoca, K. pneumoniae and E. cloacae. The percentage of live bacteria was tested by fluorescence method using Live/Dead kit(r) and BacLight (Molecular Probes(r)) and compared between groups by the Kruskal-Wallis and U Mann-Whitney tests with Bonferroni correction (p value<0.012). The effect of HOCl and CHX on total proteins of P. gingivalis and S. mutans was determined by SDS-PAGE. CHX showed a higher efficacy than HOCl against S. mutans, A. israelii, E. corrodens and E. cloacae (p<0.001) while HOCl was more effective than CHX against P. gingivalis, A. actinomycetemcomitans, C. rectus and K. oxytoca (p=0.001). CHX and HOCl had similar efficacy against K. pneumoniae. Proteins of P. gingivalis and S. mutans were affected similarly by HOCl and CHX. HOCl reduced the bacterial viability especially in periodontopathic bacteria, which may support its use in the control of subgingival biofilm in periodontal patients.
Effect of Brushing Time and Dentifrice Abrasiveness on Color Change and Surface Roughness of Resin Composites
Authors: Roselino Lourenço de Moraes Rego , Chinelatti Michelle Alexandra , Alandia-Román Carla Cecilia , Pires-de-Souza Fernanda de Carvalho Panzeri
Published: December 2015

Abstract: Dentifrice abrasiveness and brushing time may increase color change (∆E) and surface roughness (∆Ra) of resin composites. This study aimed to evaluate the effect of mechanical brushing time of dentifrices with different abrasiveness on ∆E and ∆Ra of nanofilled (Z350, 3M ESPE) and nanohybrid (Tetric N-Ceram, Ivoclar Vivadent) resin composites. Sixteen specimens (12 mm diameter x 2 mm thick) were fabricated using a white Teflon matrix of each resin composite and a ceramic (IPS e.max Ceram, Ivoclar Vivadent), used as control. After initial color readouts on white backgrounds (Spectrophotometer PCB 6807, Byk Gardner), with D65 standard illuminant, and surface roughness (Rugosimeter Surfcorder SE 1700, Kosalab) with cut-off=0.8 mm and speed=0.25 mm/s, specimens were assigned (n=8) according to the abrasiveness of the dentifrices: RDA* 68 (Colgate) and RDA* 180 (Colgate Total Plus Whitening). Specimens were submitted to mechanical brushing (58,400 cycles) and after every 14,600 cycles (1 year of brushing by a healthy individual), new color and surface roughness readouts were taken. Color stability was calculated by CIEDE2000. Data were analyzed by 3-way repeated measures ANOVA and Bonferroni test (p<0.05), and demonstrated that the dentifrice abrasiveness (p=0.02) and brushing time (p<0.0001) affected the ∆E of nanofilled resin composite. There was no difference on surface roughness of materials (p=0.6752) or brushing time (p=0.7997). In conclusion, the longer the brushing time and dentifrice abrasiveness, the greater the color change of the nanofilled resin composite. The surface roughness was not influenced by dentifrice abrasiveness.
Morphology of Mesiobuccal Root Canals of Maxillary First Molars: a comparison of CBCT scanning and Cross-sectioning
Authors: Lyra Carina Maria , Delai Débora , Pereira Keila Cristina Rausch , Pereira Guy Martins , Pasternak Júnior Bráulio , Oliveira César Augusto Pereira
Published: December 2015

Abstract: The aim of this study was to evaluate the mesiobuccal root of maxillary first molars, according to the root canal configuration, prevalence and location of isthmuses at 3 and 6 mm from the apex, comparing cone-beam computed tomography (CBCT) analysis and cross sectioning of roots by thirds. Images of the mesiobuccal root of 100 maxillary first molars were acquired by CBCT and then roots were cross-sectioned into two parts, starting at 3 mm from the apex. Data were recorded and analyzed according to Weine's classification for root canal configuration, and Hsu and Kim's classification for isthmuses. In the analysis of CBCT images, 8 root canals were classified as type I, 57 as type II, 35 as type III. In the cross-sectioning technique, 19 root canals were classified as type I, 60 as type II, 20 as type III and 1 as type IV. The classification of isthmuses was predominantly type I in both CBCT and cross-sectioning evaluations for sections at 3 mm from the apex, while for sections at 6 mm from the apex, the classification of isthmuses was predominantly types V and II in CBCT and cross-sectioning evaluations, respectively. The cross-sectioning technique showed better results in detection of the internal morphology of root canals than CBCT scanning.
Effect of Plasma and Fiber Position on Flexural Properties of a Polyethylene Fiber-Reinforced Composite
Authors: Spyrides Silvana M. M. , Prado Maíra do , Simão Renata Antoun , Bastian Fernando Luis
Published: December 2015

Abstract: The aim of this study was to evaluate the effect of plasma treatment using argon and oxygen gases, combined with fiber position on flexural properties of a fiber-reinforced composite. Eleven groups were evaluated, a non-reinforced control group and 10 groups reinforced with InFibra, a woven polyethylene fiber, varying according to the plasma treatment and fiber position. The samples were prepared using a stainless steel two-piece matrix. The three point bending test was performed in an EMIC testing machine. Flexural strength (FS) and flexural deflection (FD) were calculated from initial (IF) and final (FF) failure. Data were evaluated statistically using Kruskal-Wallis and Mann-Whitney tests (p<0.05). For IF, in all groups with fibers placed on the base, the FS and FD values were significantly higher than those positioned away from the base. The highest value of FS was obtained in the group treated with O 3 min (296.2 MPa) and the highest value of FD was obtained in the group treated with 1 min (0.109 mm). For FF the FS and FD values obtained for the groups with fibers positioned away from the base were similar or higher than those placed on the base. The highest FS value was obtained in the group treated with 1 min (317.5 MPa) and the highest FD value was obtained in the group treated with O 3 min (0.177 mm). Plasma treatment influenced FS and FD. Fiber position and plasma treatment affected the flexural properties of a fiber-reinforced composite.
Algumas tendências e perspectivas em artigos publicados de 2009 a 2014 sobre surdez e educação de surdos
Authors: Lins Heloisa Andreia de Matos , Nascimento Lilian Cristine Ribeiro
Published: December 2015

Resumo O presente trabalho faz um balanço dos artigos publicados em periódicos científicos arbitrados e vinculados ao Scientific Electronic Library Online (SciElo), no período de 2009 a 2014, em âmbito nacional. A partir de um levantamento quantitativo dessas produções, propõe-se a discussão das principais tendências no campo, interpretadas no relevo dos resumos desse corpus constituído, com base em leitura flutuante e na criação de seis categorias: 1) áreas temáticas, 2)referenciais teóricos acerca da surdez, 3) temas afeitos aos estudos surdos na perspectiva bilíngue/antropológica, 4) temas afeitos aos estudos surdos na concepção clínico-terapêutica, 5) novos temas afeitos aos estudos surdos e 6) produção por ano, instituições (públicas/privadas/localização geográfica).
Uma Contribuição ao Estudo do Processo TIG Cold Wire na Posição Plana, Horizontal e Sobrecabeça sob Novos Desenhos de Tocha e Metodologias de Alimentação de Arame
Authors: Vergara Díaz Víctor , Cortes John Michea , Espinosa Alvarez Abdón
Published: December 2015

Resumo Esta linha de pesquisa surge para melhorar o atual procedimento na soldagem de tubos de caldeiras, onde são utilizados processos de soldagem manual e a qualidade das uniões soldadas depende exclusivamente da habilidade do soldador. Neste sentido, a proposta consiste em realizar a reparação com um processo de soldagem mais produtivo denominado de TIG cold wire com alimentação mecanizada de arame frio com a intenção de conseguir ganhos em qualidade nas uniões soldadas e repetitividade. Os cordões de solda foram avaliados pelo aspecto superficial, morfologia, grau de diluição e índice de convexidade. Foram realizados ensaios com dois direcionadores de arame (20° e 48°) para verificar a influência do ângulo de entrada da injeção de arame no arco. Os resultados indicam um aumento considerável da produtividade do processo TIG com alimentação mecanizada de arame, quando é empregado o direcionador desenvolvido com entrada de arame de 20°, aproximando-se a taxa de deposição daquelas obtidas com o processo MIG/MAG, para um mesmo diâmetro de arame. Foi possível testar duas configurações de alimentação de arame: contínua e pulsada. Os resultados mostraram que a configuração de alimentação pulsada de arame proposta foi aplicada com sucesso em todas as posições garantindo repetitividade, estabilidade do processo e sustentabilidade da poça de fusão.
QUARUP: TRANSFORMAÇÕES DO RITUAL E DA POLÍTICA NO ALTO XINGU
Authors: Guerreiro Antonio
Published: December 2015

Resumo O famoso Quarup - um grande ritual mortuário realizado pelos povos do Alto Xingu em honra a chefes falecidos - tem sido cada vez mais visto pelos xinguanos como uma ocasião apropriada para receber visitantes brancos, a fim de obter recursos materiais, criar alianças políticas e chamar a atenção da mídia para assuntos indígenas. A partir da descrição de alguns rituais mortuários organizados nos últimos anos, este artigo discute como a objetificação dos rituais como "cultura" para os não índios põe em movimento processos políticos de escala local, regional e nacional. A intenção é compreender como os rituais se tornaram uma dobradiça entre o mundo dos brancos e a política ritual indígena, e como isso pode afetar as formas xinguanas de produzir pessoas e coletivos. Além disso, espera-se esclarecer alguns aspectos das ideias xinguanas sobre a chefia e a noção de "dono".
Composição e dinâmica da avifauna da usina eólica da praia da Pedra do Sal, Delta do Parnaíba, Piauí, Brasil
Authors: Guzzi Anderson , Gomes Deimes N. , Santos Antonio G. S. dos , Favretto Mario A. , Soares Leonardo M. S. , Carvalho Rafael A. V.
Published: December 2015

RESUMO O impacto dos parques eólicos sobre as aves é um dos temas menos estudados no Brasil, o que contrasta com a importância dessa nova fonte de energia renovável. O presente estudo buscou caracterizar a composição e dinâmica ecológica das espécies de aves residentes e migratórias presentes na área da Usina Eólica da Pedra do Sal, em Parnaíba, Estado do Piauí. O estudo foi desenvolvido por meio de trinta e três amostragens distribuídas em dois ciclos sazonais completos (setembro de 2011 a agosto de 2013), através do método do ponto de escuta, dispostos na base de cada um dos aerogeradores. Foram registrados 6.843 contatos de aves pertencentes a 67 espécies distribuídas em 22 famílias e 13 ordens, e a espécie com maior número de contatos foi a batuíra-de-coleira (Charadrius collaris). As categorias tróficas predominantes foram as das aves insetívoras, representadas por 18 espécies, seguidas pelas aves que se alimentam de invertebrados aquáticos (17 espécies). A maioria das aves registradas é de ambiente aquático. Durante o desenvolvimento desse estudo não foram registradas colisões entre as aves e os aerogeradores.
“Se viveres como louco, sabes que hás de morrer sem juízo”: as orientações para o bem morrer na literatura cristã portuguesa do século XVIII
Authors: Fleck Eliane Cristina Deckmann , Dillmann Mauro
Published: December 2015

Resumo Orientar os fiéis para uma vida santificada e instruí-los para uma boa morte foram objetivos muito comuns na literatura religiosa portuguesa do período moderno, especialmente aquela divulgada no século XVIII e que se propunha a definir e propagar virtudes morais e comportamentos que garantissem o bem morrer. Nosso objetivo, neste artigo, é o de analisar as orientações que todo fiel católico deveria observar como preparação prévia para a morte nas obras Sermão da Missão da quarta tarde da quaresma (1734), Terceiro Instruído na Virtude (1742) e Mestre da Virtude(1745), produzidas pelo padre dominicano português João Franco
Saudades: sensibilidades no epistolário de e/imigrantes portugueses (Portugal-Brasil 1890-1930)
Authors: Truzzi Oswaldo , Matos Maria Izilda
Published: December 2015

Resumo Baseado nas cartas trocadas entre imigrantes portugueses estabelecidos no Brasil e seus familiares em Portugal, este artigo tem como perspectiva analisar as sensibilidades presentes nesses escritos, em particular as expressões de saudade. As cartas e correspondências investigadas foram localizadas no Museu do Imigrante de São Paulo (depositadas no Arquivo Público do Estado de São Paulo - Apesp) e nos Arquivos Distritais das cidades do Porto e Braga, em Portugal. Essas missivas não só retratam processos de deslocamentos e afastamentos, como também são produtos de ambos, documentando os mundos de origem e de destino. Por meio delas percebe-se como se configuravam relações tornadas vulneráveis em razão da longa distância e do tempo de separação. Em igual medida, notam-se os esforços feitos para superar distâncias, perpetuar afetos, reforçar laços e combater a saudade.
Determinantes macroeconômicos dos investimentos no Brasil: um estudo para o período 1996-2012
Authors: Lélis Marcos Tadeu Caputi , Bredow Sabrina Monique Schenato , Cunha André Moreira
Published: December 2015

RESUMO O presente trabalho discute os determinantes do investimento privado na economia brasileira no período 1996-2012. Mais especificamente, busca-se compreender quais variáveis macroeconômicas afetaram os gastos com bens de investimento no segmento de máquinas e equipamentos (FBME). Após decompor as séries utilizadas nos seus componentes não observados e aplicar um modelo vetorial de correção de erros (VEC), constatou-se que variáveis associadas aos modelos keynesianos (nível de atividade/demanda, crédito e expectativas) apresentaram melhor poder explicativo em nossa variável de interesse. Nas considerações finais, nossos resultados são contrastados com a literatura recente sobre as perspectivas de crescimento da economia brasileira.
A diversificação da estrutura produtiva no Brasil: observações preliminares
Authors: Kretzer Jucélio
Published: December 2015

RESUMO Este trabalho tem como objetivo examinar a extensão da diversificação das operações produtivas no Brasil, de 2006 a 2010. Em 2007, o IBGE passou a adotar a versão 2.0 da CNAE, divulgando novas informações estatísticas de unidades ativas, em especial referentes às variáveis derivadas "empresa não diversificada" e "empresa diversificada". Conclui-se que a maioria das empresas do país apresenta um baixo nível de diversificação; a maioria das empresas brasileiras é "especializada" em suas atividades econômicas básicas (unidade local única). Das empresas que operam com "mais de uma unidade local", quase dois terços delas são classificados como "empresas não diversificadas", em 2010. No que tange às "empresas diversificadas", observa-se que, quanto maior o tamanho, maior tem sido a diversificação, mas verifica-se, de modo geral, que as empresas de todos os tamanhos têm se preocupado em expandir mais por meio da "diversificação por atividade e mista" e menos por intermédio da "diversificação espacial". Considerando a diversificação por setor de atividade econômica, as empresas da construção e da indústria de transformação atingiram níveis mais elevados de diversificação em 2010. De modo geral, diversos setores mostram características distintas com relação ao tipo de diversificação e ao porte das empresas.
Estudo da correlação entre as medidas lineares de crânio e face e as medidas de largura e comprimento palatino
Authors: Cordeiro Brenda Alves , Stefani Fabiane Miron , Goldfeder Eliane Maria
Published: December 2015

RESUMO Objetivo: Analisar a relação entre as medidas lineares antropométricas de crânio e face com as medidas de largura e comprimento do palato duro. Métodos: foram utilizados 23 crânios humanos e as medidas foram obtidas com o auxílio de um paquímetro e um pelvímetro. Foram mensuradas as seguintes medidas lineares: comprimento máximo do crânio, distância biporion, largura facial máxima, altura nasal, comprimento palatino e largura palatina. Resultados: Após a descritiva completa das variáveis, observou-se uma homogeneidade das medidas de crânio, face e palato. Houve correlação, com maior significância, do comprimento palatino e da largura palatina com a largura facial máxima e a distância biporion, respectivamente. A distância biporion foi a única medida que se mostrou significante na explicação, gerando fórmulas para a obtenção do comprimento e de largura palatina. Conclusão: É possível estimar o comprimento e a largura palatina por meio de dois modelos (fórmulas) por meio da medida da distância biporion. Como não existe consenso na literatura, há necessidade de padronização na obtenção das medidas lineares do palato.