Ozone Gas
Mostrando 13-24 de 65 artigos, teses e dissertações.
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13. REACTION KINETICS OF OZONE GAS IN WHEAT FLOUR
ABSTRACT The implementation of the ozonation process in the milling industry to control insect pests and improve wheat flour qualities requires understanding the behavior of ozone during ozonation. Therefore, this study aimed to investigate the reaction kinetics of ozone gas in wheat flour. Wheat flour ozonation at concentrations of 0.54, 1.07, 1.61 and 2.14
Eng. Agríc.. Publicado em: 2017-06
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14. 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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15. Ozone therapy as an adjuvant for endondontic protocols: microbiological – ex vivo study and citotoxicity analyses
ABSTRACT Objectives This study evaluated the antimicrobial efficacy of ozone therapy in teeth contaminated with Pseudomonas aeruginosa, Enterococcus faecalis, and Staphylococcus aureus using a mono-species biofilm model. Parallel to this, the study aimed to evaluate the cytotoxicity of ozone for human gingival fibroblasts. Material and Methods: One hundred
J. Appl. Oral Sci.. Publicado em: 2016-12
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16. Ozônio troposférico e compostos orgânicos voláteis em região impactada pela agroindústria canavieira
The purpose of this study was to evaluate the concentrations of tropospheric ozone and VOCs under the sugarcane agro-industry emissions in urban and rural areas of Araraquara, SP. The sampling was performed using active and passive air samplers during the sugarcane harvest and in the period between harvests in 2011 and 2012. Also, canisters were undertaken i
Quím. Nova. Publicado em: 2016-12
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17. LPS levels in root canals after the use of ozone gas and high frequency electrical pulses
Abstract The present study aims to verify the effect of ozone gas (OZY® System) and high frequency electric pulse (Endox® System) systems on human root canals previously contaminated with Escherichia colilipopolysaccharide (LPS). Fifty single-rooted teeth had their dental crowns removed and root lengths standardized to 16 mm. The root canals were prepared
Braz. oral res.. Publicado em: 15/03/2016
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18. Ozone Treatment for the Removal of Residual Chlorothalonil and Effects on the Quality of Table Grapes
Due to uncontrolled use of pesticides and disregard for harvest intervals, some pesticide residue is present in various foods. Treatments using ozone as an alternative for food decontamination have been studied in recent years due to ozone’s high oxidation potential even at low concentrations. The present work aimed to evaluate chlorothalonil removal from
J. Braz. Chem. Soc.. Publicado em: 2015-04
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19. Dissolved ozone in biological fluid monitored by optical device operating in the red-infrared region
INTRODUCTION: When a gas is used for therapy, often the kinetic behavior and their distribution in biological systems is not known, leading to unsatisfactory results for clinical application. The use of ozone in living organisms has been scientifically released worldwide under the name of ozone therapy. The efficacy of this technique is determined primarily
Rev. Bras. Eng. Bioméd.. Publicado em: 2014-06
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20. Desenvolvimento do método de extração sólido-líquido com partição em baixa temperatura para determinação de inseticidas em grãos de milho ozonizados
The objective of this study was to optimize and validate a solid-liquid extraction method with low-temperature partitioning (SLE/LTP) for the analysis of pesticides. This method was coupled with gas chromatography (GC/ECD) and used to evaluate the degradation of bifenthrin and pirimiphos-methyl in maize grains on exposure to ozone. The optimized SLE/LTP-GC/E
Quím. Nova. Publicado em: 2014-04
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21. Effect of ozone gas on the shear bond strength to enamel
Ozone is an important disinfecting agent, however its influence on enamel adhesion has not yet been clarified. Objective: Evaluate the influence of ozone pretreatment on the shear strength of an etch-and-rinse and a self-etch system to enamel and analyze the respective failure modes. Material and Methods: Sixty sound bovine incisors were used. Specimens w
J. Appl. Oral Sci.. Publicado em: 2013-04
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22. Adsorção de o-xileno em argila fluidgel organofílica em fase gasosa / Adsorption of o-xylene onto organoclay fluidgel in gas phase
The industrial growth allied to use of petroleum products generate numerous volatile organic compounds (VOC) that are continuously emitted to the atmosphere, degrading air quality and causing serious problems to human health and environment. Among the VOC, the so-called BTEX (benzene, toluene, ethyl benzene, and xylene), are the most important in terms of to
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/07/2012
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23. Degradação do antibiótico ciprofloxacina em solução aquosa por meio de processo oxidativo avançado baseado em ozônio. / Degradation of the antibiotic ciprofloxacin in aqueous solution by the advanced oxidation process based on ozone.
Os tratamentos convencionais de efluentes em geral não são eficientes para a degradação de compostos persistentes como os fármacos. Neste trabalho, estuda-se o tratamento de soluções aquosas contendo o antibiótico ciprofloxacina (CIP) por meio de processo oxidativo avançado baseado em ozônio. Para tanto, foram realizados experimentos em semi-batela
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/03/2012
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24. Evaluation of an ozonation system based on bubble column / Avaliação de um sistema de ozonização baseado em coluna de borbulhamento
A gestão dos recursos hídricos, englobando uso de água para fins potáveis e processos industriais, tornou-se de vital importância e ganhou visibilidade na última década do século vinte. Dentre as tecnologias e processos de tratamento de água potável e residuária destaca-se a ozonização. Diante deste contexto a presente dissertação de mestrado
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/02/2012