A Microsoft ActiveX control is essentially a simple OLE object that supports the IUnknown interface. This section offers solutions for making a control work well in the Internet environment, with the ultimate goal of delivering optimal quality of service to users.
Progression Of The Disease. Coal workers' pneumoconiosis, or black lung, is a disease caused by inhaling coal mine dust. The advanced form, referred to as complicated, is also known as progressive massive fibrosis. The accumulation of the dust particles in the lungs causes breathing complications.
The Black Death is thought to have originated in the arid plains of Central Asia, where it then travelled along the Silk Road, reaching Crimea by 1343. From there, it was most likely carried by Oriental rat fleas living on the black rats that were regular passengers on merchant ships. Spreading throughout the Mediterranean and Europe, the Black Death is estimated to have killed 30â60% of Europe's total population. In total, the plague reduced the world population from an estimated 450 million down to 350â375 million in the 14th century.