In the mid 1930's the Diesel engine, which formerly was used only as a large, low-speed machine, was developed into a smaller
high-speed engine for use in trucks, busses, and tractors. Along
with these changes in mechanical design came many problems, of
which a major one was lubrication. Because ordinary...
Prostate cancer is the second most common cancer in men and the fourth most common cancer overall, causing an estimated 307,000 deaths in 2012. Prostate cancer is distinct from other cancers in that there are numerous treatment options, yet very few guarantees in relation to outcome. The most common treatments...