Morphological Study of the Wear of Crystalline Polymers. (Part 4). Sliding Friction for Alumina Ceramics/Ultrahigh Molecular Weight Polyethylene System.

a study on construction of iranian life tables: the case study of modified brass logit system

چکیده ندارد.

study of cohesive devices in the textbook of english for the students of apsychology by rastegarpour

this study investigates the cohesive devices used in the textbook of english for the students of psychology. the research questions and hypotheses in the present study are based on what frequency and distribution of grammatical and lexical cohesive devices are. then, to answer the questions all grammatical and lexical cohesive devices in reading comprehension passages from 6 units of 21units th...

Wear of Ultra High Molecular Weight Polyethylene

Albumin Protein Cleavage Affects the Wear and Friction of Ultra-High Molecular Weight Polyethylene

It is well established that the total protein concentration and albumin-to-globulin ratio influence the wear of ultra-high molecular polyethylene (UHMWPE, "polyethylene") in joint prostheses. A factor on wear not yet studied, but of possible clinical relevance, is protein cleavage. Such cleavage is expected in the presence of an inflammatory response and as a result of wear processes at the art...

Friction and wear behavior of ultra-high molecular weight polyethylene as a function of polymer crystallinity.

In this study the friction, wear and surface mechanical behavior of medical-grade ultra-high molecular weight polyethylene (UHMWPE) (GUR 1050 resin) were evaluated as a function of polymer crystallinity. Crystallinity was controlled by heating UHMWPE to a temperature above its melting point and varying the hold time and cooling rates. The degree of crystallinity of the samples was evaluated usi...