Gas Measurement
Mostrando 1-12 de 246 artigos, teses e dissertações.
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1. Evaluating the disease and treatment information provided to patients with chronic obstructive pulmonary disease at the time of discharge according to GOLD discharge guidelines
RESUMO Objetivo Avaliar informações sobre a doença e o tratamento fornecidos a pacientes com doença pulmonar obstrutiva crônica no momento da alta hospitalar. Métodos Estudo transversal incluindo pacientes internados com doença pulmonar obstrutiva crônica de três hospitais terciários. O estudo baseou-se em sete itens das diretrizes de alta hospit
Einstein (São Paulo). Publicado em: 09/12/2019
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2. Methane emission from a flooded rice field under pre-germinated system
RESUMO: Estudos locais de mensuração de fluxos de gases de efeito estufa em sistemas agrícolas têm sido incentivados a nível global como base para subsidiar estimativas nacionais e estaduais de emissão. Este estudo objetivou quantificar a emissão sazonal de metano (CH4) em cultivo de arroz irrigado, sob sistema pré-germinado, no município de Tremem
Cienc. Rural. Publicado em: 17/10/2019
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3. Caracterización de resinas epoxi para uso en conectores de ductos flexibles
ABSTRACT In the offshore productions of gas and oil are frequently used flexible pipes. The end fitting is the connection between the flexible pipe body and the production unit, at the assembly of this component is used epoxy resin to fill the free space inside it. This polymeric material holds the tensile armor wires to form the anchoring system. A critical
Matéria (Rio J.). Publicado em: 19/07/2018
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4. Larvicidal effect of Clinopodium macrostemum essential oil extracted by microwave-assisted hydrodistillation against Culex quinquefasciatus (Diptera: Culicidae)
Abstract INTRODUCTION: In the present study, we determined the chemical composition of Clinopodium macrostemum essential oil obtained by microwave-assisted hydrodistillation and its effect on the growth and development of Culex quinquefasciatus mosquito larvae. METHODS: The essential oil compounds were identified by gas chromatography-mass spectrometry an
Rev. Soc. Bras. Med. Trop.. Publicado em: 2018-06
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5. Application of Full Factorial Design to Evaluate the Effect of Different Variables on the Stability of Biodiesel:Diesel Blends under Storage Conditions
Biodiesel is obtained from a renewable source and has been used as an alternative to fossil fuels. It has unsaturated fatty acid methyl esters that can degrade due to oxidation of the double bonds. The instability of biodiesel during storage may cause problems regarding the maintenance and operation of motors. This work evaluated the effect of several variab
J. Braz. Chem. Soc.. Publicado em: 2017-10
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6. Gas permeability of bentonite barriers: development, construction and testing of a measurement system
Abstract This article proposes a testing device to quickly and reliably estimate the gas permeability of bentonite-based clay barriers used in landfill cover systems. The testing methodology is based on a transient gas flow regime that passes through the barrier, therefore not requiring the use of sophisticated equipment that aim to maintain constant differe
REM, Int. Eng. J.. Publicado em: 2016-12
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7. Operator Bias in the Estimation of Arc Efficiency in Gas Tungsten Arc Welding
In this paper the operator bias in the measurement process of arc efficiency in stationary direct current electrode negative gas tungsten arc welding is discussed. An experimental study involving 15 operators (enough to reach statistical significance) has been carried out with the purpose to estimate the arc efficiency from a specific procedure for calorimet
Soldag. insp.. Publicado em: 2015-03
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8. Tecnologías constituidas, innovaciones en proceso y tecnologías introducidas en el mercado internacional: caso de estudio
The aim of this research is to understand the technological trajectory of the case study of Shale gas production. As a unit of analysis and measurement, we used the international classification of patents for inventions related to the topic retrieved from three different international databases. First the study analyzes consolidated technologies considered a
Transinformação. Publicado em: 2014-12
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9. 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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10. Soil and crop residue CO2-C emission under tillage systems in sugarcane-producing areas of southern Brazil
Appropriate management of agricultural crop residues could result in increases on soil organic carbon (SOC) and help to mitigate gas effect. To distinguish the contributions of SOC and sugarcane (Saccharum spp.) residues to the short-term CO2-C loss, we studied the influence of several tillage systems: heavy offset disk harrow (HO), chisel plow (CP), rotary
Sci. agric. (Piracicaba, Braz.). Publicado em: 2013-10
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11. Study by FT-IR Technique and Adhesive Properties of Vulcanized EPDM Modified with Plasma
ABSTRACT: The surface of vulcanized ethylene propylene diene terpolymers (EPDM) was modified by Ar and N2, microwave generated plasma in order to improve adhesion properties. Surface modification was characterized by universal attenuated total reflectance Fourier Transform Infrared (UATR/FT-IR), because it presented lower interference of ingredients of EPDM
J. Aerosp. Technol. Manag.. Publicado em: 2013-03
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12. Estudo de propriedades petrofísicas de rochas sedimentares por Ressonância Magnética Nuclear / Petrophysical properties study of sedimentary rocks by Nuclear Magnetic Resonance
The Nuclear Magnetic Resonance (NMR) technique is one of the most versatile techniques for scientific research, specially for the study of dynamics, structure and conformational of materials. In particular, its application in oil science is one of its first routine applications. Methodologies developed specifically to match this scientific community proved t
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/05/2012