In this paper, we describe a new region-based approach to active contours for segmenting images composed of two or three types of regions characterizable by a given statistic. The essential idea is to derive curve evolutions which separate two or more values of a predetermined set of statistics computed over geometrically determined subsets of the image. Both global and local image information ...

Carbon fiber-reinforced multi-layered pyrocarbon-silicon carbide matrix (C/C-SiC) composites are widely used in aerospace structures. The complicated spatial architecture and material heterogeneity of C/C-SiC composites constitute the challenge for tailoring their properties. Thus, discovering the intrinsic relations between the properties and the microstructures and sequentially optimizing the...

Zeolite Beta/MCM-41 composites have been prepared with various crystallinities of zeolite Beta through a twostep crystallization process involving the combination of low crystallinity zeolite Beta synthesis gel with cetyltrimethylammonium bromide surfactant solution. The composites are characterized by XRD, SEM, Si and Al MAS NMR, N2 adsorption, NH3-TPD and catalytic cracking. The experimental ...

In this investigation, studies are carried out on the mechanical properties of hybrid polymer composites. Hybrid composites can reach a better combination of both artificial and natural fibre properties. Different weight percentages of jute fibres were hybridised with coconut sheath to produce the composites through compression moulding. Composites were produced using untreated and treated fibr...

Magnetic inducing hyperthermia (MIH) is gaining great popularity due to its good targeted therapy and less side effects. Magnetic agents play a crucial role in this technique. As novel candidates, recently, carbon nanotubes/iron oxide nanoparticles composites have demonstrated great potential in MIH by combining the unique characteristics of carbon nanotubes with the excellent magnetic properti...

The development of environmental friendly engineering material has received top priority recently. Glass fiber (GF) reinforced polypropylene (PP) composites is one of the most widely used materials in the automotive industry due to its favourable properties. However, the presence of GF has become a major issue in the recycling of GF/PP composites. Considerable efforts have been devoted to find ...

Composite faces built by eyewitnesses commonly are poor likenesses of the target face. When there are multiple witnesses, however, an opportunity exists to morph the composites. Morphs were rated as more similar to the target face than were the mean ratings of the individual composites. However, as hypothesized, the morph also came to resemble non-target faces more than the individual composite...

In this work, graphene nanoplatelets (GNPs) reinforced magnesium (Mg) matrix composites were synthesised using the multi-step dispersion route. Well-dispersed but inhomogeneously distributed GNPs were obtained in the matrix. Compared with the monolithic alloy, the nanocomposites exhibited dramatically enhanced Young's modulus, yield strength and ultimate tensile strength and relatively high pla...

Various amounts of multiwalled carbon nanotubes [MWNTs] were embedded into polyetherimide [PEI] to form PEI/MWNT composites, and their dielectric properties were measured at 1 MHz. The Lichtenecker mixing rule was used to find a reasonable dielectric constant for the MWNTs used in this study. The dielectric constants of the developed composites were significantly increased, and the loss tangent...

This study was conducted to investigate the effects of applying methods andamount of ammonium polyphosphate (0, 2 and 4 wt%) on fire retardancy andmechanical properties of wood flour/polypropylene composites. The resultsshowed that addition of fire retardant improved the mechanical properties such astensile and flexural strengths and fire retardancy of composites. But by increasingof fire retar...