In recent years, autonomous solutions in the multidisciplinary field of mining engineering have been an extremely popular applied research topic. This is a result increasing demands society on mineral resources along with accelerating exploitation currently economically viable resources, which lead sector to turn deeper, more-difficult-to-mine orebodies. An appropriate data management system co...

Roof-cutting and pressure-releasing technology are used to cut out the pressure transmission line of critical blocks in roof, causing roof totally collapse gob, while NPR large deformation anchor cable support keeps highway its self-formed state. The gangue compactness has increased greatly when fully collapsed filled gob's edge. At end working face, void ratio between rock loose area is decrea...

The roadway stability has been regarded as the main challenging issue for safety and productivity of deep underground coal mines, particularly where roadways are affected by mining activities. This study investigates −740 m in Jining No. 2 Coal Mine to provide a theoretical basis control disturbances adjacent working Field surveys, analyses, numerical simulations used reveal mechanisms disturba...

INTRODUCTION We hypothesized that an Integrated Lumbar Interbody Fusion Device (PILLAR SA, Orthofix, Lewisville, TX) will function biomechanically similar to a traditional anterior interbody spacer (PILLAR AL, Orthofix, Lewisville, TX) plus posterior instrumentation (FIREBIRD, Orthofix, Lewisville, TX). Purpose of this study was to determine if an Integrated Interbody Fusion Device (PILLAR SA) ...

This work compares several models for fluid flow through micropillar arrays to numerical simulations and uses them to optimize pillar dimensions for maximum fluid flow in a heat pipe application. Micropillar arrays are important for controlling capillary flow in microfluidic devices, and array permeability is a key parameter in determining fluid flow rate. Several permeability models are consid...

It is difficult to predict if and when the femoral head will collapse and whether the collapse can be minimized. This study examined the final outcome of early-stage osteonecrosis of the femoral head (ONFH) using magnetic resonance imaging to verify the relationship between preservation of the lateral pillar and collapse of the femoral head. A midcoronal section of the femoral head was divided ...