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Mostrando 25-36 de 3592 artigos, teses e dissertações.
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25. Passively Q-Switched Pulses Generation from Erbium-Doped Fiber Laser Using Lutetium Oxide as Saturable Absorber
Abstract In this paper, a configuration of a passive Q-switched Erbium-doped fiber laser (EDFL) using a Lutetium Oxide (Lu2O3) thin film as a saturable absorber (SA) is experimentally implemented to generate high pulse energy with a high signal to noise ratio. A stable Q-switched pulse train is initiated at the input pump power of 30.442mW, and a maximum pul
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2021-03
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26. Estimating the rock mass deformation modulus: A comparative study of empirical methods based on 48 rock mass scenarios
Abstract The rock mass deformation modulus, Erm, is an input parameter for most numerical modeling to verify the deformation behavior of rocks due to rock engineering activities within/on it. Among the most common methodologies used for estimating this parameter, empirical correlations based on rock mass classification schemes (e.g., RQD, RMR, GSI, and Q) st
REM, Int. Eng. J.. Publicado em: 2021-01
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27. Análise comparativa do isolamento acústico em diferentes geometrias: ensaios em campo e simulações computacionais
Resumo Atualmente, no Brasil, as edificações residenciais devem atender condições mínimas de isolamento acústico, e, para tal, as características acústicas do sistema construtivo devem ser bem conhecidas. Para as condições de projeto, utilizam-se dados de isolamento acústico dos sistemas ensaiados em laboratório como valores de input em simulaç�
Ambient. constr.. Publicado em: 2021-01
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28. LÍNGUAS EM CONFLITO: MODELOS DE ACESSO LEXICAL A PARTIR DO INPUT ORTOGRÁFICO EM BILÍNGUES E MULTILÍNGUES E O EFEITO DO MULTILINGUISMO SOBRE AS FUNÇÕES EXECUTIVAS
Resumo O fenômeno do bilinguismo é a premissa essencial da tradução. Este trabalho apresenta modelos cognitivos contemporâneos que explicam o acesso lexical de bilíngues e multilíngues para o reconhecimento de palavras escritas, a partir de experimentos com homógrafos interlinguais. São abordados os trabalhos sobre conflito entre duas ou mais língu
Cad. Trad.. Publicado em: 2020-12
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29. PREPARAÇÃO E VALIDAÇÃO DE ARQUIVOS DE ENTRADA PARA USO NO SIMULADOR DE QUALIDADE DO AR (CMAQ)
According to the inventories carried out by the air pollution control agencies, vehicle emissions are responsible for more than 70% of air pollutants in metropolitan regions. Proper handling of CMAQ input data is an important step in the formation of a database for the model. Thus, it is necessary to insert the meteorological data using the Weather Research
Quím. Nova. Publicado em: 2020-12
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30. DESIGN AND IMPLEMENTATION OF FLC APPLIED TO A SMART GREENHOUSE
ABSTRACT Greenhouse cultivation needs an accurate modelling and an optimised control system to ensure an adequate microclimatic condition for plants. It represents a complex task due to the high number of input factors. For this reason, an improved intermediate modelling was established under the platform of the MATLAB/Simulink environment to simulate the en
Eng. Agríc.. Publicado em: 2020-12
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31. Wide Band Stop Response Using Interdigital Capacitor/CSRR DGS in Elliptical Microstrip Low-Pass Filter
Abstract In this paper, a compact elliptic-response microstrip low pass filter (LPF) is presented with a wide stop-band using stepped impedance resonators. With high attenuation in the stop-band, the overall size reduction of the proposed filter is achieved using a novel defected ground structure technique using an interdigital capacitor and complementary sp
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2020-12
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32. Forecasting mass and metallurgical balance at a gold processing plant using modern multivariate statistics
Abstract Knowing the quantity and the quality of products and tailings generated by a beneficiation plant, even before ore processing, can make the mining operations more sustainable, more profitable, and safer. To forecast these values, it is necessary to submit samples to batch tests which mimic the processing workflow used on an industrial scale. Then, th
REM, Int. Eng. J.. Publicado em: 2020-12
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33. THE GROWTH IN SCIENTIFIC PRODUCTION
ABSTRACT Objective This study aimed to establish the utility values of different health states associated with diabetic retinopathy in a Brazilian sample to provide input to model-based economic evaluations. Subjects and methods This cross-sectional study was performed in a sample of patients with type 2 diabetes mellitus (T2D) who underwent teleophthalm
Acta ortop. bras.. Publicado em: 2020-10
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34. Health-related quality of life associated with diabetic retinopathy in patients at a public primary care service in southern Brazil
ABSTRACT Objective This study aimed to establish the utility values of different health states associated with diabetic retinopathy in a Brazilian sample to provide input to model-based economic evaluations. Subjects and methods This cross-sectional study was performed in a sample of patients with type 2 diabetes mellitus (T2D) who underwent teleophthalm
Arch. Endocrinol. Metab.. Publicado em: 2020-10
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35. COMPOSTING PROCESS IN THE PRODUCTION OF LETTUCE SEEDLING SUBSTRATES: EFFECT OF COVERING AND TURNING FREQUENCY
ABSTRACT The composting of waste from a broiler chicken production chain (BCPC) promotes the mitigation of environmental impacts and allows the commercialization of compost as an agricultural input. Both the characteristics and the potential for use of the final compost depends on the operational conditions during composting. The objective of this study was
Eng. Agríc.. Publicado em: 2020-10
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36. REPLY BY THE AUTHORS: Comment on Polygamy, Sexual Behavior in a Population Under Risk for Prostate Cancer Diagnostic: An Observational Study From the Black Sea Region in Turkey
ABSTRACT The composting of waste from a broiler chicken production chain (BCPC) promotes the mitigation of environmental impacts and allows the commercialization of compost as an agricultural input. Both the characteristics and the potential for use of the final compost depends on the operational conditions during composting. The objective of this study was
Int. braz j urol.. Publicado em: 2020-10