Insulation Heat
Mostrando 1-12 de 41 artigos, teses e dissertações.
-
1. Forced-air warming and continuous core temperature monitoring with zero-heat-flux thermometry during cesarean section: a retrospective observational cohort study
Abstract Background: Over 30% of parturients undergoing spinal anesthesia for cesarean section become intraoperatively hypothermic. This study assessed the magnitude of hypothermic insult in parturients and newborns using continuous, high-resolution thermometry and evaluated the efficiency of intraoperative forced-air warming for prevention of hypothermia.
Brazilian Journal of Anesthesiology. Publicado em: 2022
-
2. Economic viability of a thermal blanket produced from asphalt waste used in roof covering
RESUMO Este trabalho apresenta os resultados obtidos em um projeto de construção civil, no qual se dimensiona a isolação térmica do telhado de uma pousada na região de São Joaquim, SC, considerada uma das regiões mais frias do Brasil. Propôs-se o uso de um isolante produzido à base de asfalto reciclado, apontando sua eficiência de isolação térm
Matéria (Rio J.). Publicado em: 25/11/2019
-
3. Production of Carbon Foams from Rice Husk
The production of a material with rigid, multifunctional three-dimensional porous structure at a low cost is still challenging to date. In this work, a light and rigid carbon foam was prepared using rice husk as the basic element through a simple fermentation process followed by carbonization. For the fermentation process, the amount of biological yeast (7.5
Mat. Res.. Publicado em: 11/11/2019
-
4. Comportamento térmico de compósitos de poliestireno reciclado reforçado com celulose de bagaço de cana
RESUMO O poliestireno expandido (EPS) é um polímero reciclável amplamente utilizado na fabricação de embalagens para isolamento acústico, proteção de bens de consumo duráveis e na indústria da construção civil. O PS é facilmente reciclável com o aumento da temperatura, podendo dar origem a novos materiais. Entretanto suas propriedades térmicas
Matéria (Rio J.). Publicado em: 16/09/2019
-
5. Studies on Heat Flux Imparted on Thermal Insulation Inside Rocket Motor Containing Double Base Propellant
ABSTRACT Thermal insulation inside the rocket motor experience severe pressure and temperature conditions. Experimental determination of heat flux imparted to thermal insulator inside the rocket motor during the static firing is a challenging task. This paper reports experimental determination of heat flux for double base propellant (DBP) in small rocket mot
J. Aerosp. Technol. Manag.. Publicado em: 10/07/2019
-
6. Influence of a Commercial Hatchery Thermal Environmental on the Heat Loss of Fertile Broiler Eggs
ABSTRACT The objectives of this study were to monitor the thermal environment of different hatchery locations during the transfer of fertile eggs from the setter and to the hatcher, to measure egg heat loss, and to determine its effects on hatchery results. In total, 1,728 fertile eggs of Cobb broiler breeders were divided into two treatments. In treatment 1
Rev. Bras. Cienc. Avic.. Publicado em: 2016-12
-
7. Shear Properties of Carbon Fiber/Phenolic Resin Composites Heat Treated at High Temperatures
ABSTRACT Carbon fiber/phenolic resin composites have long been used as ablative materials in rocketry. Ablation is a complex multiscale problem where radiative and convective heating leads to the pyrolysis of phenolic resin matrix, resulting in the formation of a porous insulation char as thermal protection. This study investigates the shear properties evolu
J. Aerosp. Technol. Manag.. Publicado em: 2016-09
-
8. Calidad del aire en galpón avícola con ventilación natural durante la fase de pollitos
ABSTRACT Broilers during the first phase should be protected from cold stress, especially in the winter, cold nights and early mornings. To protect animals, poultry producers have used different strategies, including the use of multilayer of curtain, to increase the thermal insulation and reduce heat losses, also decreasing the permeability to the external a
Rev. bras. eng. agríc. ambient.. Publicado em: 2016-07
-
9. Photoacoustic Thermal Characterization of Banana Fibers
Natural fibers are attracting the interest of engineering sectors owing to specific advantages such as lightweight and lower cost as well as an inherent condition of being renewable, biodegradable, recyclable and environmentally correct with respect to CO2 emission. In addition, several natural fibers present mechanical and thermal properties appropriate for
Mat. Res.. Publicado em: 2015-12
-
10. Configuration Study of Structurally Integrated Thermal Protection Systems for a Sub-Orbital Platform
ABSTRACT: The atmospheric hypersonic flight of sub-orbital and space vehicles generates aerodynamic heating and high wall heat fluxes, inducing high temperatures on the vehicle's structures and affecting their mechanical behavior, besides degrading the operation of board equipment. Furthermore, since payload preservation is always mandatory, the use of effic
J. Aerosp. Technol. Manag.. Publicado em: 2015-06
-
11. Influence of Ethylene Glycol on the Mullite Crystallization Processes Analyzed by Rietveld Refinement
ABSTRACT: Mullite is an excellent structural material due to its high temperature stability, high electrical insulation capabilities and creep resistance. This material has a number of technological applications, such as rocket nozzles used in the aerospace industry. In this work, mullite was obtained by sol-gel process, using silicic sol, aluminum nitrate a
J. Aerosp. Technol. Manag.. Publicado em: 2013-12
-
12. Análise da influência de superfícies refletivas nas perdas de calor de sistema térmicos
O uso de superfícies refletivas funcionando como isolante térmico tem crescido de forma significativa nos últimos anos. Os isolantes térmicos reflexivos são materiais que possuem como características, baixa emissividade, baixa absortividade e elevada refletividade no espectro do infravermelho. A utilização desses materiais é uma alternativa que vem
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/02/2011