Fibre Diameter
Mostrando 1-12 de 125 artigos, teses e dissertações.
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1. Influence of root dentin treatment on the push-out bond strength of fibre-reinforced posts
Abstract This study evaluates the influence of root dentin treatment with NaOCl alone and combined with EDTA, with and without ultrasound activation, on the push-out bond strength (BS) of fiber-reinforced posts in weakened roots, cemented with RelyX or Panavia. The root canals of 42 maxillary canines were instrumented with Reciproc and 2.5% NaOCl. In the cor
Braz. oral res.. Publicado em: 10/04/2017
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2. Performance of kevlar fibre-reinforced rubber composite armour against shaped-charge jet penetration
AbstractThe protective capability of the Kevlar fibre-reinforced rubber composite armour (KFRRCA) at different obliquities is studied using depth-of-penetration experiments method against a 56 mm-diameter standard-shaped charge. Efficiency factors are calculated to evaluate the protection capability of the KFRRCA at different obliquities. Meanwhile, an X-ray
Lat. Am. j. solids struct.. Publicado em: 2015-03
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3. Avaliação da customização por desgaste de pinos pré-fabricados de fibra de vidro / Evaluation of fibre posts submitted to customization of the apical portion
The purpose of this study was to evaluate fibre posts (White Post DC/FGM) submitted to customization of the apical portion. Experiment 1: 5 #4 posts were divided into five groups (G) and submitted to different custom adaptation treatments: GA no surface treatment, GB- industrial shaping tool (Dentsply), GC- #3195 fine diamond bur (KG Sorensen), GD- medium-gr
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/01/2012
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4. Caracterização de leguminosas arbustivo-arbóreas em Pernambuco.
Experiments investigating the characteristics of forage legume were carried out in 2007 and 2008 at the Experimental Station in Itambe and São Bento do Una, both belonging to the State of Pernambuco Institute Agricultural Research Corporation, Brazil (IPA). The first experiment set out to characterize the morphology and quality of three plantations, each co
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/02/2011
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5. Resistance to Compression of Wool in Mixed-Aged Flocks.
Estimates of resistance to compression (adjusted for variations of both crimp frequency and fibre diameter) of 1852 wools derived from Corriedale breeding flocks varying in age composition (2-6 years old), where age group was pooled over four sampling years, were examined. Data are presented showing that age group did not influence the slope of the regressio
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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6. Implications of Medullation and Fibre Diameter Distribution on Wool Diameter Measured by Airflow.
The specific gravity (related to medullation as assessed by three techniques) and fibre diameter variability of 242 wool samples (encompassing the range of diameters between 22.0 and 38.0 m.m) were considered to evaluate the accuracy of diameter estimates as obtained from the Airflow apparatus. Data are presented showing the improvement obtained on diameter
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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7. Age at First Mating on Lifetime productivity of Corriedale Ewes in Southern Brazil.
A total of five different Corriedale flocks (respectively initiated in years 1976--1980), totalling 2,561 breeding ewes, were first mated at 19-20 or 30-31 months of age. Lifetime production data on: a) fleece weight and its components (as measured by greasy fleece weight, washing yield, clean fleece weight, fibre diameter and staple length), b) reproductive
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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8. Estudo do comportamento mecânico de dutos de aço com reparos compósitos hibridos / Mechanical behavior of steel pipes repaired with a hybrid laminate
Worldwide, steel pipes play an important role in many industrial sectors. Meanwhile, any kind of duct is prone to suffer superficial damages due to corrosion. In this sense, techniques which allow fast and reliable repairs of ducts have a fundamental importance to increase the life cycle, avoid accidents, minimize environmental contaminations and to keep the
Publicado em: 2010
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9. Desenvolvimento e produtividade da cana-de-açúcar em ambiente protegido sob diferentes níveis freáticos / Development and productivity of the sugarcane in greenhouse under different water table
The aim of this work was to evaluate the effect of level and time of freatic elevation on variables related to plant growth, development, productivity and technological parameters of sugarcane crop. The experiment was carried out in a 120-m2 greenhouse, set up at the research station of the Rural Engineering Department Luiz de Queiroz College of Agriculture
Publicado em: 2009
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10. Metodologias para a determinação das propriedades de impacto de baixa energia de laminados metal-fibra / Methodologies to determine low-energy impact properties of fiber-metal laminates
Applications of hybrid fiber-metal laminates include, besides aeronautical industry, the automotive and naval industries. Unlike aeronautical field, impact research activities in the former areas of mobility industry are frequently limited by available laboratory equipment, so that it would be desirable to develop low-cost procedures to determine impact resi
Publicado em: 2008
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11. Monitoramento da qualidade do ar de ambientes internos : bibliotecas.
The main objective of this study was to monitor and to characterize the particulate material (PM) with equivalent diameter between 2,5 and 10 m (PM2,5-10), particulate with equivalent diameter smaller than 2,5 m (PM2,5), particulate with total suspended particles (TSP), and some pollutant gases (ammonia, chlorine, carbon dioxide, ozone, benzene, carbon monox
Publicado em: 2007
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12. Estudo sobre a furação de compósito de resina epóxi reforçado com fibras de vidro
The technological development has allowed the manufacture of sophisticated goods, leading to the pursuit of materials able to satisfactorily fulfill these requirements. Materials such as traditional metals, polymers and ceramics are still widely employed; however, they have been increasingly replaced by composite materials, which must be processed to the fin
Publicado em: 2007