A 39-year-old woman underwent bilateral total hip arthroplasty with conventional, ethylene oxide-sterilised liners when she was a subject in a radiostereometric analysis study. Within 2 years she had rapid polyethylene wear with aggressive, asymptomatic, and periprosthetic osteolysis on both sides. Oral alendronate therapy halted the progression of osteolysis over a year and revision to cross-l...

BACKGROUND Radiostereometric analysis provides highly precise measurements of component micromotion relative to the bone that is otherwise undetectable by routine radiographs. This study compared, at a minimum of five years following surgery, the micromotion of tantalum and titanium acetabular cups and femoral head penetration in highly cross-linked polyethylene liners and conventional (ultra-h...

The number of lifters of mill shell liners, mill rotation speed, and filling percentage of grinding media are three of the most important parameters influencing the charge behavior and the trajectory of ball motion inside the SAG mills, and consequently, their performance. In this paper, the milling operation of pilot-scale SAG mills using the discrete element method (DEM) is investigated. Firs...

• A method to reduce the vibration of chimneys by tuning suspended liners is proposed. simplified model chimney with for numerical analysis introduced. Conceptual design and optimization methods are proposed tuned structure. Reinforced concrete steel widely used in waste gas discharge industrial facilities, guaranteeing their safety performance harsh environments important industries society. T...

We find that a preliminary classification of LINERs’ energetics may be made in terms of the FIR-radio correlation of Wolf-Rayet galaxies. The AGNor starburst-supported LINERs can be distinguished by their FIR-to-radio ratio, Q ≡ L(1.4GHz)/ L(60μm) > or < 0.01. It is interesting to note that almost all the LINERs with inner rings might be starburstsupported, indicating reduced AGN activities com...

Backside wear due to micromotion and poor conformity between the liner and its titanium alloy shell may contribute to the high rates of retroacetabular osteolysis and consequent aseptic loosening. The purpose of our study was to understand the wear process on the backside of polyethylene liners from two acetabular cup systems, whose locking mechanism is based on a press-fit cone in combination ...

Our analysis on the two magnitude-limited samples of LINERs suggests a correlation between LFIR/LB or f(25μm)/f(60μm), and Hubble-type index at >99.99% significance level. As LFIR/LB and f(25μm)/f(60μm) are considered as the indicators of star-formation activity and AGN activity, respectively, our result suggests that LINERs with higher AGN activity may have a lower star-formation contribution....

Landfills of hazardous waste like radioactive rest products with low activity, or ashes from incinerated organic waste, need to have top clay liners for minimizing penetration and percolation of precipitated rain and meltwater. Temperature and dry weather vary interchangeably with wet periods making the clay desiccate and fissure, and subsequently wetted etc. Top liners are commonly made of sme...

It is argued that there is a linear correlation between star formation rate (SFR) and accretion rate for normal bright active galactic nuclei (AGNs). However, it is still unclear whether this correlation holds for LINERs, of which the accretion rates are relatively lower than those of normal bright AGNs. The radiatively inefficient accretion flows (RIAFs) are believed to be present in these LIN...