Metallic Fibers
Mostrando 1-12 de 18 artigos, teses e dissertações.
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1. Giant Magneto Impedance Effect of Co-Based Metallic Fiber Under Bias Magnetic Field
The giant magneto impedance, GMI, effect of Co-based metallic fibers prepared by melt-extracted technology is investigated under different bias direct electrical current Ib. The GMI curves have single peaks which are symmetric about zero field at and below 1MHz. However, the bimodal GMI curves which have asymmetric peaks are observed when Ib is over 2mA at 0
Mat. Res.. Publicado em: 16/09/2019
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2. Efeito da adição de fibras híbridas na durabilidade de compósitos cimentícios avançados em ambientes úmidos e agressivos
ABSTRACT Reactive powder concrete (RPC) is one type of advanced cementitious composite that has been increasingly used. Its high mechanical strength enables the application of the composite in bolder structures. Considering its recent history of use, there is a lack of knowledge about this materials durability. Therefore, this paper aimed to evaluate the beh
Matéria (Rio J.). Publicado em: 18/10/2018
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3. Nondestructive characterization of epoxy matrix composites reinforced with Luffa lignocellulosic fibers
ABSTRACT Luffa Cylindrica is a tropical plant from the Cucurbitaceae family, whose fruit becomes very fibrous when fully ripened. The lignocellulosic sponges of Luffa can be suitable for use as reinforcement of epoxy matrix composites, because they have a morphology with spatial 3-D arrangement as well as are eco-friendly materials (biodegradable, and high a
Matéria (Rio J.). Publicado em: 20/07/2017
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4. Effect of Rockwool and Steel fiber on the Friction Performance of Brake Lining Materials
ABSTRACT Wear resistance and Frictional stability are key performance requirements for brake lining. Automotive brake linings are usually made of various ingredients such as binder, filler, friction modifiers and reinforcement. Rockwool is a mineral fiber and steel fiber is a metallic fiber. In this work reinforcement fibers used are both the mineral and met
Matéria (Rio J.). Publicado em: 2016-09
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5. Ballistic Efficiency of an Individual Epoxy Composite Reinforced with Sisal Fibers in Multilayered Armor
Sisal fibers are among the natural lignocellulosic ones with great impact resistance for potential use in polymer composites. This work evaluates the ballistic efficiency of the distinct individual components of a multilayered armor. These include the front ceramic, the back metallic sheet and the intermediate layer as either the conventional aramid fabric o
Mat. Res.. Publicado em: 23/10/2015
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6. A metallic impregnation technique adapted to study the honeybee Apis mellifera L. brain
In order to visualize the distribution pattern of the neuronal bodies and neurofibrils in the honeybee brain, we adapted a metallic impregnation technique first described for vertebrate nervous system by Ramón y Cajal. The honeybee brain constitution plays a key role in the development of learning and memory capacities. The general characteristics observed
Neotropical Entomology. Publicado em: 2010-10
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7. Deslocamento do abomaso em bovinos no Estado de Pernambuco: fatores de risco, aspectos clínicos, laboratoriais e avaliação terapêutica
The continuous genetic selection for high milk production in association with greater digestive capacity and corporal depth increases the susceptibility for abomasopathies including abomasal displacement. The present work aimed to accomplish a retrospective study on abomasal displacement in 36 cattle attended at Bovine Clinic, Garanhuns Campus, Federal Rural
Publicado em: 2009
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8. Influence of different catilever extensions and glass or polyamaramid reinforcement fibers on fracture strength of implant-supported temporary
In long-term oral rehabilitation treatments, resistance of provisional crowns is a very important factor, especially in cases of an extensive edentulous distal space. The aim of this laboratorial study was to evaluate an acrylic resin cantilever-type prosthesis regarding the flexural strength of its in-balance portion as a function of its extension variation
Journal of Applied Oral Science. Publicado em: 2008-04
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9. Construction and evaluation of microsystems for flow analysis / Construção e avaliação de microssistemas para analise em fluxo
This work describes the construction, characterization and application of microsystems for flow analysis. Laser ablation was employed for the development of a system in poly(methylmethacrylate), whose channels, with rectangular cross sections measuring 200 mm width by 4,5 mm depth, were sealed with an adhesive plastic film. This device supported flow rates u
Publicado em: 2008
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10. Investigação das características tribológicas e ambientais de termoplásticos de engenharia especiais para uso em materiais de atrito. / Investigation of tribological and environmental characteristics of high performance thermoplastics to friction materials.
Organic clutch friction facings are basicly composed of an organic matrix, fillers, solid lubricants and reinforcing fibers. An organic matrix has a structural function and has a large influence over the tribological properties of the system (coefficient of friction and wear rate in both, friction material as for the metal counterpart). Based on the automoti
Publicado em: 2007
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11. Estudo de variáveis de composição e processo para controle da compressibilidade
Brake pads for automotive brake systems represent one of the most complex composite materials since they contain many components with widely varying physical and chemical properties. This multiphase nature is necessary to satisfy a wide variety of performance related demands. Processing conditions also have a major influence on the properties of these comple
Publicado em: 2006
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12. IgG purification from human plasma by membrane affinity chromatography with immobilized Cu(II) and Ni(II) : effect of quelators IDA, TREN and CM-Asp / Purificação de IgG a partir do plasma humano por cromatografia em membranas con ions Cu(II) e Ni(II) imobilizados : efeito dos agentes quelantes IDA, TREN e CM-Asp
The use of immunoglobulin G (lgG) in therapeutic applications has growing vastly and it is used in the treatment of a growing number of indications. Several chromatographic techniques have been investigated for IgG purification. In this work, we investigated the effect of the chelators iminodiacetic acid (IDA), carboxymethylaspartate acid (CM-Asp) and Tris-2
Publicado em: 2006