Roller compaction: Ribbon splitting and sticking

Monitoring Roller Vibration During Compaction of Crushed Rock

Real-time monitoring during soil compaction can be made possible by utilizing the vibration signature of a vibratory roller compactor. The compactor and soil constitute a coupled dynamic system, albeit complex and nonlinear. As the soil density increases and its mechanical properties change, the dynamic response of the compactor will change. Developing a thorough knowledge of the relationship b...

designing and evaluating the compaction roller of furrows in order to reduce irrigation losses

in this study, the effect of furrow firming rollers were investigated to improve furrow irrigation parameters such as: advance time, runoff, deep percolation and irrigation efficiency (application efficiency) in the roller treatments, nonroller treatments (traditional) and treatment of including compacted with tractor wheel in the miandab agriculctural station in west azerbaijan during 2001-200...

Sticking with Carrots and Sticks (Sticking Points Aside): A Response to Ventakapuram, Goldberg, and Forrow

Application of external lubrication during the roller compaction of adhesive pharmaceutical formulations.

A novel use of external lubrication has been investigated in which magnesium stearate was applied directly to the roll surface during roller compaction. A scalable parameter; travelling roll distance per shot (D(pS)), has been defined which ensures that an equal amount of magnesium stearate is applied to the roll surface per rotation at any roll speed. It was found that a formulation containing...

Sticking Points

Nowadays a blood test usually requires a doctor’s visit, a needle poke in the arm, and a day-long wait for results to come back from a lab. So when Silicon Valley start-up Theranos promised a device that could perform more than a hundred of the most commonly ordered blood tests from just a fingerstick, doctors, patients, and investors were quick to get behind the company. Valued at $9 billion i...