Service Stations
Mostrando 1-12 de 36 artigos, teses e dissertações.
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1. Assessment of Total Attenuation and Adaptive Scheme for Quality of Service Enhancement in Tropical Weather for Satellite Networks and 5G Applications in Nigeria
Abstract The dynamic weather condition is a major concern for optimum channel utilization in recent times, especially at higher frequencies with larger bandwidth for 5G applications. Over the years, rain-induced attenuation among the hydrometeors has been linked as the major cause of signal impairment especially at the frequency, f ≥ 10 GHz. However, when
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2021-06
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2. Optimum Positioning of Base Station for Cellular Service Devices Using Discrete Knowledge Model
Abstract A good wireless network design depends on technical and financial viability and a number of other criteria that must be met. Following the emergence of new technologies and services, such as 5G transmission and the reuse of frequencies, new work is being carried out to ensure a better design for a particular area. This study examines a discrete radi
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2020-12
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3. Evaluating the effectiveness of an educative workshop for pregnant women using pre and post intervention surveys
Resumo: O artigo relata os achados de uma intervenção educativa através de uma oficina para fornecer informações às mulheres sobre a gravidez, parto, aleitamento e cuidados do recém-nascido. Foi realizado um estudo transversal com um desenho de pesquisa de intervenção, com 105 gestantes usuárias de um serviço obstétrico, ao longo de dois anos. Os
Cad. Saúde Pública. Publicado em: 14/10/2019
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4. Strategic resonance and innovation in public security services in Brazil
Resumo O objetivo do estudo foi testar, com a construção de duas escalas, uma contribuição exploratória de um modelo da relação entre ressonância estratégica (RE) e inovação em serviço de segurança pública (ISSP). O objeto de análise são os Postos Comunitários de Segurança (PCSs) da Polícia Militar do Distrito Federal (PMDF). O modelo da r
Organ. Soc.. Publicado em: 2019-03
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5. “Era urgente e indispensável agir”: o tracoma em São Paulo no início do século XX
Resumo No início do século XX o tracoma, enfermidade oftálmica contagiosa, tornou-se endêmica no interior do estado de São Paulo. Em 1906, mediante a infecção de quase 40% da população rural examinada, o governo estadual implantou 25 postos de tratamento em diversos municípios. Foi uma campanha audaciosa, dispendendo recursos com equipes médicas,
Physis. Publicado em: 25/02/2019
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6. Protección antiincrustante de estructuras sumergidas mediante recubrimientos formulados con 7-hidroxi-4-metilcumarina
ABSTRACT Biofouling settlement on submerged structures such as ships, buoys, farms, off-shore platforms and meteorological stations induces economic losses as a consequence of material deterioration and withdraw from service. Environmental regulations focus on the use of environmental friendly products to replace metallic biocides included in antifouling pai
Matéria (Rio J.). Publicado em: 19/07/2018
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7. Qualitative and Quantitative Monitoring of Methyl Cotton Biodiesel Content in Biodiesel/Diesel Blends Using MIR Spectroscopy and Chemometrics Tools
This paper presents methodologies for monitoring the quality of methyl cotton biodiesel in biodiesel/diesel blends using mid-infrared spectroscopy (MIR) and chemometrics tools. The first method relates to the construction of multivariate control charts with the aim of qualitatively monitoring the samples according to the Brazilian specification for biodiesel
J. Braz. Chem. Soc.. Publicado em: 2016-01
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8. An efficient method of EM field modification around transmitting stations
AbstractAn efficient practical method for the electromagnetic (EM) fields reduction around transmitting stations has been developed. The project has been stimulated by the necessity to reduce the field levels in the vicinity of transmitting stations, including FM, UHF, cellular base stations and other radiocommunication services, to obey regulations concerni
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2015-06
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9. Alternativas de tratamento da água de lastro em portos exportadores de minério de ferro. / Ballast water treatment alternatives in the iron ore ports exporting.
This thesis aims at making a technical and economic analysis of the ballast water treatment in Brazilian iron ore ports. Three distinct treatment alternatives were studied: (1) onshore ballast water treatment; (2) water desalination plant to ballast water treatment; (3) onboard ballast water treatment in shuttle tanker vessels operating in the mooring, where
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 13/03/2012
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10. Green-Markov models - new optimization strategies: a case study for user allocation in co-channel macro/femto networks
The femtocell concept aims to combine fixed-line broadband access with mobile telephony using the deployment of low-cost, low-power third and fourth generation base stations in the subscribers' homes. While the self-configuration of femtocells is a plus, it can limit the quality of service (QoS) for the users and reduce the efficiency of the network, based o
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2012-12
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11. No ar...As (in) certezas da comunicação nas rádios comunitárias em catalão-goiás (1992 2011) / The air ...The (un) certainties of communication in community radio stations in Catalan-goiás (1992 - 2011)
The debate on media, in general forms and public media, radio licenses and TVs, in a specific way, its on our countrys day order, mainly because the National Conference on Communication has recently happened, and it has showed the extreme necessity and immediacy of discussing the means of public licenses distribution, which has risen ideas and values that de
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/08/2011
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12. Endoscopic ultrasound-guided biopsies for mediastinal lesions and lymph node diagnosis and staging
OBJECTIVES: To disseminate transesophageal ultrasound-guided fine needle aspiration (EUS-FNA) as an alternative to investigate mediastinal tumoral lesions because it is an underused modality that has been available in Brazil for more than 15 years. METHODS: Descriptive analysis of a single endoscopy service's experience since 1997 in the accomplishment of EU
Clinics. Publicado em: 2011