943 resultados para Aqueous two-phase polymer systems
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Metal oxidenanocomposites were prepared by two different routes: polyol and sol-gel. Characterization by X ray diffraction showed that the first processproducesdirectly a two-phase material, while the sol-gelpowder never showed second phase below 600 degrees C. Light spectroscopy of the treated powders indicated similarities for the processed materials. Although the overall material compositions are about the same, different structural characteristics are found for each processing. With the exception of Ti-Zn materials, all the double metal oxide powders showed higher absorbance than either TiO2 powder.
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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We report the frequency measurements of 18 optically pumped far-infrared (FIR) laser lines generated from CD3OH and (CH3OH)-C-13. We use the heterodyne technique of mixing FIR laser radiations and microwave radiation on a metal-insulator-metal point-contact tunnel diode to determine the FIR laser frequencies. Two FIR laser systems, consisting of CO2 waveguide pump lasers and Fabry-Perot FIR laser cavities, were used as optical sources. (C) 1997 Optical Society of America.
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Composting is considered a process that enables adding value to organic solid waste turning them into organic fertilizer. In this process, factors such as mishandling the windrow, failed to control the temperature, aeration and moisture content will result in the quality of waste decomposition, and thus affect the quality of the final compound. Decentralized systems such as home composting, composting in restaurants, food courts and schools are one of the solutions for valuing these waste in a non expensive way and with greater quality. For this purpose, the project aims to analyze the conditions for composting of solid waste of the University Restaurant of Rio Claro- SP, through two different composting systems: manual revolving windrow and static pile. It was found that in University Restaurant (RU) on average 33% by weight of the total waste generated in the property are capable of composting. In this sense, in order to investigate the preliminary process operation parameters were mounted one manual windrow composed of 100% of the UR waste and a static pile composed of 60% of the UR waste and 40% of pruning and grass residues (PG). This study analyzed the manual revolving windrow and static pile systems for the parameters: moisture content, pH, C / N ratio and temperature. The study of the proportions of the PG and UR waste pointed to the need for pruning and grass residues addition for composting, considering that the manual revolving windrow composed by 100% of the UR waste had no satisfactory performance due to low temperatures measured during 60 days analysis. The best ratio for manual revolving windrow method analyzed in this study was 60% of the UR waste and 40% of PG waste, in dry weight. From this proportion a static pile was assembled, composed of 60% of UR waste e 40% of PG waste from the maintenance activities of the green area of the university. The biological activity in the static pile reached the maximum temperature of ...
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
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Metal oxide nanocomposites were prepared by two different routes: polyol and sol-gel. Characterization by X ray diffraction showed that the first process produces directly a two-phase material, while the sol-gel powder never showed second phase below 600°C. Light spectroscopy of the treated powders indicated similarities for the processed materials. Although the overall material compositions are about the same, different structural characteristics are found for each processing. With the exception of Ti-Zn materials, all the double metal oxide powders showed higher absorbance than either TiO2 powder.
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
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Humanization is a decisive factor for the positive conditions in the work environment related to the health sector, however, few initiatives take into consideration this aspect in different areas of knowledge, including the field of Human Kinetics. Thus, this study, which has a qualitative nature, aimed to identify the mood of employees from Sistema Únicos de Saúde - SUS, using evidences based on experiences of a playful and animistic activities. The study was conducted through bibliographical and exploratory research, using as a tool two-phase data collection the Brunel Questionnaire (BRUMS). Part of this study included an international sample compose of SUS participants from Araras city, having as criteria employees associated with SUS longer than one year. Participants experienced an animistic and recreational activities program and the instrument was applied before and after these experiences. Data was descriptively analyzed through the Thematic Content Analysis Technique. The results showed that the recreational and animistic activities can positively improve the mood of workers in the health sector, indicating the importance of developing new humanization strategies in health ambit. This study suggests new actions in public policy, able to encourage longer or even continuous interventions in the daily journey of health workers
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This study was qualitative in nature and aimed to investigate the possible interference of spiritual experiences with the subjective perception of quality of life. The perspectives of civil servants in education and health services were compared. The study was developed through bibliographic and exploratory research, and the instrument used for data collection for the exploratory research was the WHOQOL-bref, which was applied in two stages: before and after experiences with spiritual activities. The purposive sample used in this study was composed of civil servants working in health and education administrative sectors of the Brazilian Unified Health System and a State University, respectively, with the intention of broadening the understanding about the perception of quality of life in civil servants from different sectors. The exploratory research of the study was carried out in three stages. The first was a two-phase data collection, before and after experiences with spiritual activities offered to civil servants who worked in the health care field, as well as the analysis of the results of this step. The second stage was the collection of data before and after experiences with spiritual activities offered to civil servants who worked in the administrative sector of education in a public university, besides the analysis of the results of this step. The third stage consisted of a comparison of the results obtained in the preceding two steps. The data resulting from the use of the research instrument for both samples were analyzed via Thematic Content Analysis. A questionnaire containing 26 questions based on four main themes was used. The first two questions were related to perceived quality of life and health satisfaction and they were not part of the specific domains. The other 24 questions were divided between the four themes: physical domain, psychological domain, domain of social relations, and environmental domain. The results...
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Pós-graduação em Engenharia e Ciência de Alimentos - IBILCE
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)