Hydroxyapatite (HA) is the most important bioactive ceramics because of biocompatibility and structural similarity to the mineral part of bones and teeth of broad clinical application in the field of dentistry, orthopedic and coatings are Biomaterials. The aim of this study was to construct nano-hydroxyapatite micro particles using calcite, silica and zinc oxide using ball milling, powder, thes...

Global manufacturers of thermoplastic molded parts increasingly require 100% quality inspection levels that are difficult to achieve. While process complexity makes it difficult to attain the desired part properties during start-up, the stochastic nature of the process causes difficulty in maintaining part quality during production. This paper formally compares several alternative quality contr...

Earplugs are a common form of protection for workers exposed to hazardous noise levels. Their comfort directly impacts the effective by influencing their consistent and correct use. Nevertheless, definition may vary according studies. Thus, previous review literature has shown that improve our understanding perceived reduce measurement variability, it is advisable consider through multidimensio...

Two groups of PLGA specimens with different geometries (notched and unnotched) were injection molded under two melting temperatures and flow rates. The mechanical properties, morphology at the fracture surface, and residual stresses were evaluated for both processing conditions. The morphology of the fractured surfaces for both specimens showed brittle and smooth fracture features for the major...

Carbon nanotubes are currently added to polymers avoid extra-stages in the electrostatic painting process. However, attained particle network after processing a final part could affect mechanical properties and thermal stability of nanocomposites. It is then important evaluate not only functional properties, but also overall performance these pieces. In this work, boxes polypropylene (PP) modif...

OBJECTIVE To evaluate the effect of custom molded foot orthoses on children with growing pains of the lower extremities. METHODS Children with growing pains were recruited during a clinic visit. None had any bony deformities, inflammatory joint disease or depression. Resting calcaneal stance position (RCSP) and calcaneal pitch angle were measured, and individual custom molded rigid foot ortho...

This paper is concerned with difficulties encountered by engineers when they attempt to predict the orientation of fibers in creation injection molded plastic parts. It known that Jeffery’s equation, which was designed model a single fiber an infinite fluid, breaks down very badly applied, no modifications, this situation. In previous paper, author described how interactions between and viscosi...