The stress wave produced by the piston impact, on drill rod, is an important factor affecting impact performance. It particularly to control waveform generated rod meet requirements of efficiency and component durability some mechanical systems. Based theory, model rock drilling established, a dimensionless collision coefficient γ put forward, matching relationship between different coefficient...

This paper presents an assessment of three deterministic core simulators with the focus on neutronic performance in steady-state calculations small Sodium cooled Fast Reactor cores. The selected codes are DYN3D, PARCS and novel multi-physics solver GeN-Foam. By using these codes, multi-group diffusion solutions obtained for twenty control rod worth measurements performed during isothermal physi...

background chronic hepatitis c virus (hcv) is associated with extra hepatic autoimmune disorders, while peg-ifna-2a/rbv combination therapy may exacerbate these conditions. autoantibodies to cytoplasmic structures, called rod and ring particles (rr), have strong associations with these patients and are identified by hep-2 cells. objectives our purpose was to study the correlation of autoantibod...

STUDY DESIGN Three types of anterior thoracolumbar multisegmental fixation were biomechanically compared in construct stiffness and rod-screw strain. OBJECTIVES To investigate the effects of rod diameter and rod number on construct stiffness and rod-screw strain in anterior thoracolumbar multisegmental instrumentation. SUMMARY OF BACKGROUND DATA No studies have been undertaken to investigat...