Breakthrough times for barrier systems at typical municipal solid waste landfills in China.

Landfill is the most common disposal method for municipal solid waste (MSW). Composite liners are widely used as bottom barriers in MSW landfills in China to minimize groundwater contamination with landfill leachate. However, little information is available on breakthrough times for bottom barrier systems used in landfills.

Modified keyhole technique for the treatment of biceps long head tendon rupture.

The present study aimed to assess a novel modified keyhole fixation technique to treat long head of biceps (LHB) rupture. From May 2015 to July 2017, a total of 9 patients with LHB rupture, decreased muscle strength and pop-eye sign were treated using the keyhole fixation technique combined with extramedullary cortical bone microplate-suspending fixation. Measurements of visual analog scale (VAS) score, elbow joint rotation, flexion strength, the Shoulder Score of the University of California Los Angeles (UCLA) and the Rating Scale of American Shoulder Elbow Surgeons (ASES) score were used to evaluate surgical outcomes prior to and following surgery.

Numerical investigation of cavity self-oscillation and noise radiation induced by turbulent flow at non-zero inclination angle.

A hybrid numerical approach was used on a three-dimensional cavity at a non-zero inclination angle of the upstream section to reveal the mechanism of self-oscillation and the characteristics of far-field sound field. In this hybrid approach, the unsteady flow physics was captured by a compressible large eddy simulation, and the far-field sound field was calculated by the FW-H integral equation, with the noise source provided by near-field calculation. The mechanism of self-oscillation was revealed based on the instantaneous flow field structure and the pressure inside the cavity.