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Mostrando ítems 2391-2400 de 5393
Estudo Comparativo de Juntas Soldadas a TIG e Laser Empregando-se Ti com Pureza Comercial Utilizado em Prótese sobre Implantes
(Associação Brasileira de Soldagem (ABS), 2007-07-01)
Welding in the dentistry has been used for great part of the specialized dentist-surgeons in the implants area to solve prosthesis supported by implant adaptation problems. The development of new equipments Laser and TIG ...
Análise de métodos analíticos de blocos rígidos sobre duas estacas e as tensões limites das regiões nodais
(BrasilUFRNPROGRAMA DE PÓS-GRADUAÇÃO EM ENGENHARIA CIVIL, 2019-03-18)
The pile caps are of great importance for the balance of structure and among the main
difficulties for the dimensioning is the fact that there is no consonance when dealing
with the model of dimensioning and behavior of ...
Análise de fundação em estaca helicoidal em solo reforçado com geossintético
(Universidade Federal do Rio Grande do NorteBrasilUFRNEngenharia Civil, 2016)
The helical piles foundation system consist of metal structures inserted into the soil by rotation along its longitudinal axis, with satisfactory performance when working under compressive and tensile loads. This type of ...
Modificación Estructural del Polietiléntereftalato con Ácido Poliláctico. Síntesis de Polímeros Biodegradables
(2010-08-17)
Polyethylene terephthalate (PET) is a very important polymer, but this kind of synthetic
polymer is resistant to biological degradation. For this reason there is an urgent need to
develop renewable source based biopolymers ...
INFLUENCE OF THE OXIDATION AND ACETYLATION OF BANANA STARCH ON THE MECHANICAL AND WATER BARRIER PROPERTIES OF MODIFIED STARCH AND MODIFIED STARCH/CHITOSAN BLEND FILMS.
(2013-02-28)
Banana starch was oxidized at three different levels and afterwards acetylated. The double-modified starch was used for film preparation with the addition of chitosan. The physical, mechanical, and barrier properties were ...
Ultrasonic material characterization using large-aperture PVDF receivers
(Elsevier B.V., 2010-02-01)
This work describes the use of a large-aperture PVDF receiver in the measurement of liquid density and composite material elastic constants. The density measurement of several liquids is obtained with accuracy of 0.2% using ...
Evaluation of WC-10Ni thermal spray coating with shot peening on the fatigue strength of AISI 4340 steel
(Elsevier B.V., 2010-01-01)
Fatigue failure is a result of a crack initiation and propagation, in consequence of a cyclical load. In aeronautical components as landing gear the fatigue strength is an important parameter to be considered in project, ...
SURFACE MODIFICATION of SUGARCANE BAGASSE CELLULOSE and ITS EFFECT on MECHANICAL and WATER ABSORPTION PROPERTIES of SUGARCANE BAGASSE CELLULOSE HDPE COMPOSITES
(North Carolina State Univ Dept Wood & Paper Sci, 2010-01-01)
Cellulose fibres from sugarcane bagasse were bleached and modified by zirconium oxychloride in order to improve the mechanical properties of composites with high density polyethylene (HDPE). The mechanical properties of ...
Hybrid nanocomposites containing carboxymethylcellulose and silver nanoparticles
(2013-03-01)
Silver nanoparticles have high temperature stability and low volatility, and at the nanoscale are known to be an effective antifungal and antimicrobial agent. The present investigation involves the synthesis of silver ...
Influence of genotype on the quality of sheep leather
(Sociedade Brasileira de Zootecnia, 2011-08-01)
The objective of this study was to evaluate the influence of crossings between sheep breeds on the intrinsic quality of leather. It was used the skins of 36 lambs (18 females and 18 males), resulting from crosses between ...