To understand bile duct cancer, it helps to know about the bile ducts and what they normally do. Bile is a fluid made in your liver and stored in your gallbladder. Your bile ducts are a series of thin ...

Abstract: The study of atmospheric refractive conditions is essential in the shipboard radars and radio communication conditions in the maritime environment. Especially at low altitudes, as radio ...

Abstract: Evaporation ducts are a particular type of atmospheric stratification that frequently appears on the sea surface. The accurate and timely prediction of the evaporation duct height (EDH) is ...

If you turn on the air conditioning unit to stay cool in the summer, or if you turn on the heat to stay warm in the winter, you have an HVAC system, or Heating, Ventilation and Air Conditioning. This ...