The success of an implanted prosthetic material is determined by the early events occurring at the interface between the material and the body. These events depend on many surface properties, with the main ones including the surface's composition, porosity, roughness, topography, charge, functional groups and exposed area. This review will portray how our understanding of the surface reactivity...

This paper deals with multifractal theory applied to image analysis. Multifractals show many interesting peculiarities in the characterization of textured surfaces. In the paper, a method for the computation of multifractal parameters is proposed, together with some application results. Moreover, results are shown that depict the exploitation of such features in a data-fusion environment for SA...

in a Hydrogen-Bonded Multilayer System by Allison Kunz Submitted to the Department of Materials Science and Engineering in Partial Fulfillment of the Requirements for the Degree of Bachelor of Science at the Massachusetts Institute of Technology December 2007 © Allison Kunz All Rights Reserved The author hereby grants to MIT permission to reproduce and to distribute publicly paper and electroni...

In this work we present a robust and accurate method for the computation of centerlines inside branching tubular objects starting from a piecewise linear representation of their boundary. The algorithm is based on solving the Eikonal equation on the Voronoi diagram embedded into the object, with wavefront speed inversely proportional to Voronoi ball radius values. As a result, provably accurate...

The quality of machined workpieces, particularly precious metals, is the main goal of every machining process. A suitable cutting fluid can substantially affect the machining outcome. The study is novel in that it uses nanofluids in the machining process to mitigate the adverse effects of high temperatures and friction. Graphene oxide (GO) nanoparticles were synthesized using the modified Humme...

the present study deals with the synthesis andfunctionalization of mesoporous silica nanoparticles as drug delivery platforms. sba-15 nanorods with high surface area (1010 m2g-1) were functionalized by post grafting method using 3-mercaptopropyl trimethoxysilane (mpts). the parent and thiol-functionalized sba-15 nanorods were used as nanocarriers for an anticancer drug (gemcitabine). the charac...

In this paper, we present characterizations of pairs of graphs whose join graphs are 2-minimally nonouterplanar. In addition, we present a characterization of pairs of graphs whose join graphs are 2-minimally nonouterplanar in terms of forbidden subgraphs.

For the family of graphs with xed-size vertex cover k, we present all of the forbidden minors (obstructions), for k up to ve. We derive some results, including a practical nite-state recognition algorithm, needed to compute these obstructions.