Measurement Systems
Mostrando 25-36 de 507 artigos, teses e dissertações.
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25. Comprobación de la uniformidad de resultados de un equipo de ensayos simultáneos de termofluencia
ABSTRACT The phenomenon of creep occurs in materials that operate under high temperatures and mechanical stresses, causing changes in their structures; such changes are evidenced by a progressive loss of mechanical strength. The characterization of this phenomenon should be performed with appropriate test machines, which are usually dependent on expensive te
Matéria (Rio J.). Publicado em: 19/07/2018
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26. Development of an indirect ELISA assay to evaluation of the adaptive immune response of pacu (Piaractus mesopotamicus)
ABSTRACT The pacu is one of the most important species for Brazilian fish farming and is considered emerging in the global aquaculture. Despite its importance, no effective tool for evaluation of the adaptive immune response of this species has been developed. Therefore, this study aimed the development and standardization of indirect ELISA for the measureme
An. Acad. Bras. Ciênc.. Publicado em: 25/06/2018
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27. Análise da Convecção Rasa sobre a Região Costeira Amazônica Usando Imagens de Satélite, Dados Observacionais e Modelagem
Resumo A região de Belém, no estado do Pará, localizada na região norte do Brasil e parte do bioma da Amazônia, é caracterizada por altas temperaturas, forte convecção, alta umidade e instabilidade atmosférica, favorecendo a formação de nuvens convectivas. As convecções rasa e profunda estão entre os componentes principais do balanço de energi
Rev. bras. meteorol.. Publicado em: 2018-06
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28. Flow Analysis: Looking Back and Forward
Flow analysis changed significantly the way of performing chemical analysis by (i) mechanization of analytical procedures in a continuous flowing stream with minimal sample intercontamination; (ii) analytical measurements without attaining chemical equilibria, thus increasing the applicability of kinetic methods and allowing the exploitation of non-quantitat
J. Braz. Chem. Soc.. Publicado em: 2018-05
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29. An Innovative Structural Fatigue Monitoring Solution for General Aviation Aircraft
ABSTRACT: This article proposes a novel and effective solution for estimating fatigue life of General Aviation (GA) airframes using flight data produced by digital avionics systems, which are being installed or retrofitted into a growing number of GA aircraft. In the proposed implementation, a flight dynamics model is adopted to process the recorded flight d
J. Aerosp. Technol. Manag.. Publicado em: 26/02/2018
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30. Reliability of light microscopy and a computer-assisted replica measurement technique for evaluating the fit of dental copings
Abstract The aim of this in vitro study was to assess the reliability of two measurement systems for evaluating the marginal and internal fit of dental copings. Material and Methods: Sixteen CAD/CAM titanium copings were produced for a prepared maxillary canine. To modify the CAD surface model using different parameters (data density; enlargement in differe
J. Appl. Oral Sci.. Publicado em: 01/02/2018
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31. Evidence hierarchies relating to hand surgery: current status and improvement. A bibliometric analysis study
ABSTRACT BACKGROUND: Hierarchy of evidence is an important measurement for assessing quality of literature. Information regarding quality of evidence within the Brazilian hand surgery setting is sparse, especially regarding whether research has improved in either quality or quantity. This study aimed to identify and classify hand surgery studies published
Sao Paulo Med. J.. Publicado em: 17/11/2017
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32. SmartCoM: Smart Consumption Management Architecture for Providing a User-Friendly Smart Home based on Metering and Computational Intelligence
Abstract With advances in information technology for health and wellness, Smart Home-based solution providers using Internet of Things (IoT) technologies, have increased in importance and become accepted as an alternative means of saving energy when based on Home Energy Management Systems (HEMS). This paper defines a modern architecture (SmartCoM), which is
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2017-09
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33. A System Based on Artificial Neural Networks for Automatic Classification of Hydro-generator Stator Windings Partial Discharges
Abstract Partial discharge (PD) monitoring is widely used in rotating machines to evaluate the condition of stator winding insulation, but its practice on a large scale requires the development of intelligent systems that automatically process these measurement data. In this paper, it is proposed a methodology of automatic PD classification in hydro-generato
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2017-09
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34. Automated and observer based light field indicator edge evaluation in diagnostic X-ray equipment
Abstract Introduction To analyze edge detection and optical contrast calculation of light field-indicators used in X-ray via automated- and observer-based methods, and comparison with current standard approaches, which do not give exact definition for light field edge determination. Methods Automated light sensor array was used to measure the penumbra zone
Res. Biomed. Eng.. Publicado em: 2017-06
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35. HYDRAULIC CONDUCTIVITY VARIABILITY IN HORIZONTAL SUBSURFACE FLOW CONSTRUCTED WETLANDS
ABSTRACT Many modifications in hydrodynamic conditions occur inside the bed of a horizontal subsurface flow constructed wetland (HSSF–CW) in operation. Studies on hydraulic conductivity measurement techniques in HSSF–CW are imperative since the monitoring of flow conditions is essential for understanding and controlling its clogging. This study aimed to
Eng. Agríc.. Publicado em: 2017-04
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36. Performance evaluation of digital TV and LTE systems operating in the 700 MHz band under the effect of mutual interference
Abstract This paper presents results of the assessment of the interference between digital TV systems and LTE systems operating in adjacent bands in the 700 MHz frequency range. Measurement results are presented and used to validate a simulation tool that allows different scenarios of interference between the SBTVD systems and LTE to be created. The simulati
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2016-12