In this study we compare the biodegradation of both single-walled (SWCNTs) and multi-walled carbon nanotubes (MWCNTs) using two different oxidative conditions. In particular, we demonstrate that oxidized multi-walled carbon nanotubes are highly degraded, although not to completeness when treated with horseradish peroxidase (HRP) in the presence of hydrogen peroxide.

The paper analyzes the structure of technological fixtures for positioning and fixing large-sized thin-walled pyroceram shells as a factor affecting dynamic characteristics grinding system. solution to problem ensuring stability «mandrel-workpiece» subsystem is necessary increase efficiency shell machining in present conditions. Studying vibrations frequency spectrum system during has made it p...

Incidence of abdominal aortic aneurysm (AAA) is increasing in the aging society of the western world. Development of AAA is mostly asymptomatic and is characterized by a bulge in the abdominal aorta. However, AAA may suddenly rupture, which results in an internal bleeding associated with a high mortality rate. Patients with AAA undergo regular screening until treatment indication. To date, stat...

Thin-walled shell-type structures are widely used in various branches of technology and industry. Such under operating conditions usually exposed to loads, including thermomechanical ones. Real shell structures, as a rule, have complex shapes. To increase reliability, reduce material consumption, for technological reasons, they designed inhomogeneous systems thickness. This causes great constan...

The para-receptacle structure (PRS) was first described in Neoechinorhynchus (Neoechinorhynchus) qatarensis Amin, Saoud, and Alkuwari, 2002 (Neoechinorhynchidae), as a prominent vesicle connected proximally to the anterior body wall and distally to the posterior wall of the proboscis receptacle then extending into the body cavity of males and females as a posterior conduit tube. The PRS has sin...