Rising friction with Saudi Arabia set the stage for the proceedings.
Undermining the stability of the last few months is rising friction between the Awakening Councils and the Iraqi Army and the police, much of it with a sectarian edge.
At a meeting on Thursday between vice-marshal Choe Ryong Hae and Liu Yunshan, a senior figure in the Chinese Communist party, North Korea heeded China's wishes after months of rising friction between the allies, according to reports.
All speak of rising friction between nationalistic fighters and foreign-led Islamists over goals and tactics, with some Iraqi insurgents indicating a revulsion over the car bombs and suicide attacks in cities that have caused hundreds of civilian deaths.
After a short honeymoon, expect rising friction between Congress and incoming Treasury Secretary Timothy Geithner.
A decreasing friction factor with increasing Sommerfeld number indicates a mixed lubrication regime, a rising friction factor with increasing Sommerfeld number indicates full-fluid film lubrication, and boundary lubrication is shown as a flat trendline with no dependence of friction factor on Sommerfeld number (Unsworth 1978, Dowson 2001).
But rising frictions between China and its neighbors in recent weeks over security issues have handed the United States an opportunity to reassert itself — one the Obama administration has been keen to take advantage of.
The decrease in the sliding speed and load leads to the rise of friction coefficient and wear rate.
When a carbon film experiences high speed sliding contact, its material properties can be degraded by mechanical contact stress and temperature rise by friction, which thus can lead to system malfunction or failure.
Experimentally induced in vitro maturation caused an approximately 3-fold rise in friction coefficient (P < 0.02, N = 4) compared to freshly isolated immature cartilage.
