Ventilation Systems
Mostrando 13-24 de 77 artigos, teses e dissertações.
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13. Positioning of sensors for control of ventilation systems in broiler houses: a case study
ABSTRACT Ventilation systems are incorporated at intensive poultry farms to control environment conditions and thermal comfort of broilers. The ventilation system operates based on environmental data, particularly measured by sensors of temperature and relative humidity. Sensors are placed at different positions of the facility. Quality, number and positioni
Sci. agric. (Piracicaba, Braz.). Publicado em: 2017-04
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14. Inductive plethysmography potential as a surrogate for ventilatory measurements during rest and moderate physical exercise
Background: Portable respiratory inductive plethysmography (RIP) systems have been validated for ventilatory assessment during resting conditions and during incremental treadmill exercise. However, in clinical settings and during field-based exercise, intensity is usually constant and submaximal. A demonstration of the ability of RIP to detect respiratory m
Braz. J. Phys. Ther.. Publicado em: 15/03/2016
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15. Model-predicted ammonia emission from two broiler houses with different rearing systems
Ammonia (NH3) emissions from broiler production can affect human and animal health and may cause acidification and eutrophication of the surrounding environment. This study aimed to estimate ammonia emissions from broiler litter in two systems of forced ventilation, the tunnel ventilation (TV) and the dark house (DH). The experiment was carried out on eight
Sci. agric. (Piracicaba, Braz.). Publicado em: 2015-10
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16. IL-6 and TNF-α serum levels are associated with early death in community-acquired pneumonia patients
Community-acquired pneumonia (CAP) is amongst the leading causes of death worldwide. As inflammatory markers, cytokines can predict outcomes, if interpreted together with clinical data and scoring systems such as CURB-65, CRB, and Acute Physiology and Chronic Health Evaluation II (APACHE II). The aim of this study was to determine the impact of inflammatory
Braz J Med Biol Res. Publicado em: 24/02/2015
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17. Minimum ventilation systems and their effects on the initial stage of turkey production
This study aimed at evaluating the live performance of turkeys during the initial stage of production (1-26 days of age) and to map the environmental variables inside turkey houses, such as temperature, relative humidity, CO2 concentration, at two distinct minimum ventilation systems. House 1 (H1) was equipped with a negative-pressure ventilation system and
Rev. Bras. Cienc. Avic.. Publicado em: 2013-03
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18. Evaluation of reflective painting of the roof and artificial ventilation on performance and carcass yield of broilers
This study was developed with the objective of evaluating reflective paint on covering and artificial ventilation on performance of broilers (males and females). A randomized design with a 2 × 2 × 2 factorial arrangement of treatments was used, as follows: 2 external management systems (coverage with and without reflective paint), 2 internal management sys
Revista Brasileira de Zootecnia. Publicado em: 2012-07
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19. Use of geostatistics on broiler production for evaluation of different minimum ventilation systems during brooding phase
The objective of this research was to evaluate different minimum ventilation systems, in relation to air quality and thermal comfort using geostatistics in brooding phase. The minimum ventilation systems were: Blue House I: exhaust fans + curtain management (end of the building); Blue House II: exhaust fans + side curtain management; and Dark House: exhaust
Revista Brasileira de Zootecnia. Publicado em: 2012-01
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20. Projeto e desenvolvimento de um sistema de controle para um dispositivo de ventilação mecânica pulmonar. / Project and development of a control system for a lung mechanical ventilation device.
A ventilação mecânica pulmonar é a substituição da respiração espontânea de um paciente quando este não realiza ou realiza parcialmente esta tarefa. Esta ventilação é de extrema importância para o tratamento de pacientes em estado crítico em unidades de terapia intensiva e para a manutenção da oxigenação sanguínea durante cirurgias. A ven
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 20/09/2011
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21. Controle PID e Preditivo â Aspectos TeÃricos e de ImplementaÃÃo PrÃtica / Control PID AND Predictive - Theoretical Aspects and Practical Implemantation
Nowadays, we observe the exponential increasing of demand for performance optimization in all areas of modern life. This search for better performances is also occurring in all industry sectors, either factory or energy activities. This best performances reflects an increase is all levels and achieve enormously the process control systems. With more strict p
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/09/2011
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22. Análise crítica da Norma Brasileira ABNT NBR 16401-1 (Instalações de Ar Condicionado - Sistemas Centrais e Unitários parte 1 - Projeto das Instalações), 16401-2 (Parâmetros de Conforto Térmico) e 16401-3 (Qualidade do Ar Interior)
The present issue turns around Air-conditioning installation and aims to study the Brazilian Standard ABNT NBR 16.401/2008 (Air-conditioning Installations Central and Unitarian Systems, parts 1, 2 and 3, respectively, Installations Projects, Thermal Comfort Parameters, and Indoor Air Quality). Its goal is to present and make it easier to understand, as well
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/08/2011
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23. Estudo da eficiência para a ventilação natural dos sheds em hospitais da Rede Sarah / Study of the efficiency of natural ventilation of sheds Sarah network in Hospitals
Natural ventilation in tropical regions is an efficient design strategy for achieving thermal comfort and reducing energy consumption. The utilization of natural resources and climate conditions improves integration of the building with its surroundings and allows comfort conditions through passive systems of conditioning. The effects of wind on a building a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/08/2011
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24. Técnicas de processamento não linear de sinais aplicadas à investigação de limitações práticas do procedimento de ventilação mecânica não invasiva
Individuals with respiratory system dysfunctions or who are recovering from complex surgeries may have difficulty to sustain spontaneous breathing. The mechanical ventilation is a clinical procedure that supports ventilation until the patient is recovered. Noninvasive mechanical ventilation is especially remarkable as it can be used outside the hospital, in
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/05/2011