Plastic Composition
Mostrando 13-24 de 94 artigos, teses e dissertações.
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13. Alternative construction and demolition (C&D) waste characterization method proposal
RESUMO Os resíduos da construção civil podem representar a maior parte dos resíduos sólidos gerados nos municípios, e o conhecimento de sua composição ainda é limitado. Para apoiar gestores na fase de diagnóstico desses resíduos, este estudo propõe um método de campo que forneça a sua caracterização qualitativa apoiado em indicadores de gera�
Eng. Sanit. Ambient.. Publicado em: 25/04/2019
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14. Quality and functional properties of ‘Tupy’ blackberry stored in modified atmosphere conditions
Resumo O objetivo deste trabalho foi avaliar o efeito da temperatura de armazenamento, em atmosfera modificada (AM) passiva, e da composição atmosférica em AM ativa sobre a manutenção da qualidade, do teor de compostos fenólicos totais (CFT) e da atividade antioxidante total (AAT; métodos DPPH e ABTS) de amoras-preta ‘Tupy’. Foram conduzidos dois
Rev. Bras. Frutic.. Publicado em: 24/01/2019
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15. Evaluation of metals in tomato sauces stored in different types of packaging
Abstract There is a growing concern about health and food safety when it comes to processed food. In the present study, it has been hypothesized that tomato sauces contain high amounts of metals possibly leached from packaging. Concentrations of As, Cd, Pb, Cr, Ni, Sn and Sb were determined by ICP-MS in tomato sauces stored in metallic, plastic, cellulosic
Food Sci. Technol. Publicado em: 26/07/2018
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16. Estabilidad de la austenita retenida bajo condiciones de deformación en aceros multifásicos con bainita nanoestructurada
ABSTRACT A steel with nominal composition 0.25C, 1.9Si, 0.63Mn, 1.5Cr was manufactured using an induction furnace. The as-cast alloy was homogenized and the temperatures of austenite start (AC1) and finish (AC3) during heating were determined by dilatometric analyses. Two intercritical austenitization temperatures were selected, which were used to perform pa
Matéria (Rio J.). Publicado em: 19/07/2018
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17. AVALIAÇÃO DE CARACTERÍSTICAS DE BIODIESEIS DE FONTES ALTERNATIVAS SUBMETIDOS A CONDIÇÕES DE ARMAZENAGEM DIFERENCIADA
Biodiesel is an alternative fuel obtained from different biomass sources and processes. Nowadays, this biofuel has gained importance due to environmental concerns and rising energy demand. In the biodiesel production chain, stability is a critical issue, as it is linked to the maintenance of its original properties. This work performed a study evaluating the
Quím. Nova. Publicado em: 2018-06
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18. Digestibility and pricing of Chlorella sorokiniana meal for use in tilapia feeds
ABSTRACT: Several microalgae contain in excess of 50 % crude protein with amino acid profile comparable to that of fish meal. In addition, high polyunsaturated fatty acid contents encourage their use in animal feeding and nutrition, particularly in the formulation and processing of aquafeeds. This study aims at estimating the feasibility of Chlorella meal as
Sci. agric. (Piracicaba, Braz.). Publicado em: 2018-05
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19. Assemblage of drosophilids (Diptera, Drosophilidae) inhabiting flooded and nonflooded areas in the extreme South of Brazil
ABSTRACT Several studies on the potential use of drosophilid assemblages as bioindicator systems have been carried out in the last years. Nevertheless, the successful application of these organisms in these systems requires adequate filling of several knowledge gaps. In this sense, little is known about drosophilid assemblages in wetlands and flooded areas.
Rev. Bras. entomol.. Publicado em: 2018-01
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20. Plant parameters and must composition of ‘Syrah’ grapevine cultivated under sequential summer and winter growing seasons
ABSTRACT Plant variables and must physicochemical properties were evaluated for the grapevine ‘Syrah’ cultivated in sequential growing seasons (summer and winter) from 2011 to 2015. The vines were trellised in vertical shoot position, grafted on Paulsen 1103, with approximate density of 5,800 plants∙ha−1. They were grown under plastic overhead cover.
Bragantia. Publicado em: 15/05/2017
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21. Physical and chemical characteristics of cashew nut flour stored and packaged with different packages
Abstract The aim of this study was to evaluate the physical and chemical changes in cashew nut flour under different packaging and storage conditions. The flour samples were characterized according to their chemical composition, packaged in polystyrene trays associated with covering chloride polyvinyl (PVC), plastic pot of polyethylene terephthalate (PET), p
Food Sci. Technol. Publicado em: 02/05/2017
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22. Evaluation of disposable medical device packaging materials under ozone sterilization
Abstract Introduction Ozonization is an alternative sterilization process for heat-sensitive medical devices. However, the side effects of this process on packaging materials should be verified. Methods Four types of commercial disposable packaging for medical devices were evaluated after undergoing ozone sterilization: crepe paper sheet, non-woven fabric
Res. Biomed. Eng.. Publicado em: 2017-03
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23. Research on the Specific Heat Capacity of PBX Formulations Based on RDX
ABSTRACT The experimental results of specific heat capacity of 2 plastic bonded explosives formulations based on 1,3,5-trinitroperhydro-1,3,5-triazine, using differential scanning calorimetry thermal analysis, and the theoretical ones calculated with the specific heat capacity and mass fraction of individual compounds are compared for a temperature range bet
J. Aerosp. Technol. Manag.. Publicado em: 2016-09
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24. Construction of a New Aluminum(III) Cation Selective Electrode Based on 12-Crown-4 as an Ionophore
This article describes the fabrication of a novel and selective polyvinylchloride (PVC) membrane potentiometric sensor for Al3+ cation based on 12-crown-4 (12C4) as an ionophore. The electrode was prepared by coating the surface of a graphite rod by a membrane containing PVC as a plastic matrix, dibutylphthalate (DBP) as plasticizer, 12C4 as an ionophore and
J. Braz. Chem. Soc.. Publicado em: 2015-05