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Mostrando 1-12 de 83 artigos, teses e dissertações.
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1. Pressed roofing tile based on cementitious material and basalt powder: Technological and toxicological characterization
Abstract This study aims to develop a pressed concrete roofing tile from powder technology containing basalt powder in substitution of fine sand (aggregate) for application in building covers. Specimens were submitted to technological and toxicological characterization. Hence, pressed specimens based on cement and basalt powder were analyzed. In the bending
REM - International Engineering Journal. Publicado em: 2022
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2. Sinonasal Mucosal Melanoma: A Population-based Comparison of the EUROCARE and SEER Registries
Abstract Introduction Sinonasal melanomas are rare tumors with no comparative survival studies between Europe and the US. Objective To provide a population-based survival analysis between the two continents. Methods The European Cancer Registry (EUROCARE) and the United States Surveillance, Epidemiology, and End Results (SEER) databases were queried to id
International Archives of Otorhinolaryngology. Publicado em: 2022
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3. Análise das propriedades físicas e mecânicas de blocos de concreto prensados sem função estrutural com incorporação de PET reciclado
RESUMO O presente trabalho apresenta a análise de um elemento não convencional para sistema vedação de edificações: o bloco de concreto prensado com a incorporação de PET reciclado. Para tanto foi realizada uma análise experimental realizando-se a substituição, em volume, do agregado miúdo (pó de pedra) por PET triturado, nos teores de 15%, 30%
Matéria (Rio J.). Publicado em: 10/06/2019
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4. Influence of the moisture content on the dynamic modulus of elasticity of concrete made with recycled aggregate
Resumo O comportamento elástico do concreto é estimado a partir de sua resistência a compressão ou determinado por ensaios estáticos ou dinâmicos. Como a maioria das normas não consideram o teor de umidade interna do concreto e desconsideram o uso de agregados reciclados ao propor equações para a estimativa do módulo de elasticidade, é frequente s
Ambient. constr.. Publicado em: 2019-04
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5. Influence of Pregnancy on the Inflammatory Process Following Direct Pulp Capping: a Preliminary Study in Rats
Resumo O objetivo deste estudo foi avaliar o processo inflamatório do tecido pulpar após o capeamento pulpar direto, realizado durante a gestação. Este estudo experimental envolveu 48 primeiros molares superiores de ratos Wistar fêmeas. Os procedimentos foram realizados em animais prenhes e não prenhes (n=20). Após as exposições pulpares, o capeamen
Braz. Dent. J.. Publicado em: 2019-02
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6. Land Use and Changes in Soil Morphology and Physical-Chemical Properties in Southern Amazon
ABSTRACT Many Amazonian farmers use the slash-and-burn method rather than fertilization for crop production. The aim of the present study was to evaluate changes in the morphological, physical, and chemical properties of naturally fertile Inceptisols after conversion from native forest to different uses in southern Amazonia, Brazil. Land covered by dense nat
Rev. Bras. Ciênc. Solo. Publicado em: 31/07/2017
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7. Investigation on chemical composition and optimization of essential oil obtainment from waste Pinus taeda L. using hydrodistillation
ABSTRACT: The extraction of essential oils obtained by the hydrodistillation of needles/twigs waste of Pinus taeda L. was optimized by applying response surface methodology (RSM), with 24 full factorial design, in order to improve oil essential production, and aggregate value to the production chain of pine wood. Through the model it was possible to ascertai
Braz. arch. biol. technol.. Publicado em: 07/06/2016
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8. Food production in solidarity economy: an issue that goes beyond laws
Abstract Food production within the context of solidarity economy is an alternative way to offer employment and income for a significant part of the Brazilian population. The purpose of this study was to carry out a business diagnosis in order to evaluate the facilities, the production process and hygiene practices of seven solidarity economy enterprises loc
Food Sci. Technol. Publicado em: 06/05/2016
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9. On the Contributions of Knowledge-Intensive Business-Services Multinationals to Laggard Innovation Systems
Foreign direct investment (FDI) is assumed to be a source of knowledge flows across National Innovation Systems, with particular relevance for developing countries. Nonetheless, empirical assessments are usually manufacturing-oriented, providing only a partial view of the phenomena under scrutiny. This article aims at contributing to this body of literature
BAR, Braz. Adm. Rev.. Publicado em: 2015-06
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10. Colloidal Dispersion Stability: Kinetic Modeling of Agglomeration and Aggregation
In this work we present a simple model for the kinetics of agglomeration and aggregation of colloidal particles. We consider that particles agglomerate rapidly and endothermically forming oligomers. These oligomers can, in turn, aggregate irreversibly, in a process that leads to the destabilization of the colloidal system. As these two processes have very di
J. Braz. Chem. Soc.. Publicado em: 2015-02
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11. Frog meat microbiota (Lithobates catesbeianus) used in infant food
Captive breeding of bullfrog (Lithobates catesbeianus) is of great economic potential, mainly for its thighs and leather. The nutritional quality of frog meat includes properly balanced amino acids with a protein profile of high biological value, low fat and low cholesterol, and high digestibility due to its short chain molecule structure. It is recommended
Food Sci. Technol. Publicado em: 25/02/2014
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12. Doping technique in the interfacial transition zone between paste and lateritic aggregate for the production of structural concretes
This paper discusses the use of doping technique in the interfacial transition zone (ITZ) between Portland cement paste and lateritic aggregates with the objective of promoting the implementation of structural concrete. Doping technique consists of establishing the initial impregnation of the aggregate with a high performance paste in order to improve its bi
Mat. Res.. Publicado em: 11/10/2013