Hard Disk
Mostrando 1-12 de 17 artigos, teses e dissertações.
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1. Investigation on the Wear Properties of Ti/TiC/TiN Composite Coatings Prepared by Powder Cored Wires Through TIG Method at Nitrogen Atmosphere on Titanium Substrate
In this present study, Tungsten Inert Gas (TIG) welding and powder filled cored wires with nitrogen shielding gas were utilized to produce TiC and TiN surface composite coatings on the titanium (Ti) sheet substrate. The TIG procedure was done at same welding parameters for all of prepared samples. Phase analysis and microstructures were done by X-ray Diffrac
Mat. Res.. Publicado em: 15/04/2019
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2. Estudio del comportamiento de fundición CADI sometida a FCR
ABSTRACT Ductile Iron (DI) is a development of the iron alloys introduced in the ´50s, with free graphite in the form of nodules. Austempered Ductile Iron (ADI) is a development of DI later introduced, consisting on austempering heat treatment in order to obtain a high strength and high toughness material. Carbidic Austempered Ductile Iron (CADI) is a more
Matéria (Rio J.). Publicado em: 19/07/2018
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3. Factors affecting the bond strength of denture base and reline acrylic resins to base metal materials
OBJECTIVE: The shear bond strengths of two hard chairside reline resin materials and an auto-polymerizing denture base resin material to cast Ti and a Co-Cr alloy treated using four conditioning methods were investigated. MATERIAL AND METHODS: Disk specimens (diameter 10 mm and thickness 2.5 mm) were cast from pure Ti and Co-Cr alloy. The specimens were
J. Appl. Oral Sci.. Publicado em: 2013-07
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4. Diferenciação de fluxos sem manutenção de estados em roteadores
O tráfego da Internet é dominado por transações de curta duração. Todavia, apesar da grande quantidade, os fluxos curtos são responsáveis por uma pequena porção da carga total dos enlaces e ainda disputam, injustamente, recursos com conexões que transportam grandes volumes de dados. O desempenho de sessões TCP (Transmission Control Protocol) oper
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/12/2011
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5. A five-year hedonic price breakdown for desktop personal computer attributes in Brazil
The purpose of this article is to identify the attributes that discriminate the prices of personal desktop computers. We employ the hedonic price method in evaluating such characteristics. This approach allows market prices to be expressed as a function, a set of attributes present in the products and services offered. Prices and characteristics of up to 3,7
BAR - Brazilian Administration Review. Publicado em: 2009-09
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6. Pericia odontologica civil : criação de software / Civil dental expertise : software development
The practice of dentistry in Brazil is regulated by the law 5.081/66 which has the following wording: "dentists are competent to make forensic dental expertise in civil, criminal, labor and administrative areas". Considering the increase of situations that requiJ dental expertise, such as a deal involving professional exercise and the need of maxillofacial i
Publicado em: 2009
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7. Utilizando um forno de microondas e um disco rígido de computador como laboratório de física
Este trabalho apresenta uma proposta para o Ensino de Física partindo de aplicações da Física em produtos tecnológicos, e está formatado à luz da pedagogia construtivista de Piaget, Vygotsky e Ausubel. Pretende-se despertar a curiosidade e o interesse dos professores e, como conseqüência, dos alunos, pelos temas da Física, desmistificando equipamen
Publicado em: 2009
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8. Synthesis and application of oligomers of poly(fluorenylene vinylene) / Síntese e aplicação de oligômeros de poli(fluorenilenovinileno)
There is a growing interest in investigating the phenomenon of magnetoresistance in various materials (both organic and inorganic), since it is directly linked to the manufacture of high capacity hard disk drives. Previous studies showed that the polymer PDO14FV presents magnetoresistance with higher intensity than inorganic materials. Therefore, this work c
Publicado em: 2008
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9. Análise do desempenho do sistema brasileiro de TV digital sob condições adversas de recepção
The main objective of this work is to study and evaluate the receptions conditions of a Digital TV signal, modulated in Brazilian standard and received with the use of an internal and external antenna, to analyze and to study the interferences that affect it. Comparing the conditions for receipt of the theoretical model of Okumura Hata with real data collect
Publicado em: 2008
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10. Parallel File Systems: alternatives to reduce the bottleneck in accessing the file system / Sistemas de arquivos paralelos: alternativas para a redução do gargalo no acesso ao sistema de arquivos
Nos últimos anos, a evolução dos processadores e redes para computadores de baixo custo foi muito maior se comparada com o aumento do desempenho dos discos de armazenamento de dados. Com isso, muitas aplicações estão encontrando dificuldades em atingir o pleno uso dos processadores, pois estes têm de esperar até que os dados cheguem para serem utiliz
Publicado em: 2005
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11. Museum as midia: performance and collaborative space / O museu como mídia: performance e espaço colaborativo
The museum has changed. If the epistemological skip of XXI century is the art in net, it is also mentioned to the presence of the museums in the net and of the communicative processes that emerge in these new ways of organization. Human beings keep things. They once belonged, the pleasure of keeping tiny pieces of paper which unity them to events. With the i
Publicado em: 2005
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12. Recent progress in the synthesis and characterization of amorphous and crystalline carbon nitride coatings
This review summarizes our most recent findings in the structure and properties of amorphous and crystalline carbon nitride coatings, synthesized by reactive magnetron sputtering. By careful control of the plasma conditions via proper choice of process parameters such as substrate bias, target power and gas pressure, one can precisely control film structure
Brazilian Journal of Physics. Publicado em: 2000