The African Union to begin shipment of J&J vaccines next week
By: Sarah Jerving The African Union will ship 6 million doses of the Johnson & Johnson one-dose COVID-19 vaccine next week. This is the first shipment of doses available to…
GEAR OILS CATEGORIES AND THEIR IMPORTANCE
A lubricant’s viscosity is arguably its most important property – its resistance to flow and shear. Viscosity can be influenced by several factors, from contamination to temperature. Multi-viscosity oils have…