Everyone is familiar with pinwheels, and few of us haven’t crafted one from a square of paper, a stick, and a pin. Pinwheels are pretty optimized from a design standpoint, and are so cheap and easy to ...

A blocked bile duct typically occurs due to gallstones. Symptoms can vary depending on the duct affected but may include nausea, light-colored stools, and dark-colored urine. Biliary obstruction is a ...

Measuring air flow in an HVAC duct can be a tricky business. Paddle wheel and turbine flow meters introduce not only resistance but maintenance issue due to accumulated dust and debris. Being able to ...

Jaundice coupled with abdominal pain signals a potential bile duct obstruction, a serious condition requiring immediate ...

You need tears for a lot more than crying. They flow across the surface of your eyes to clean and moisten them, then they leave your eyes through a system of tiny drainage tubes that run along your ...

The alchemy of burning any solid fuel-including coal-requires mixing fuel and air in just the right proportion at just the right time. Get the recipe wrong, and reduced efficiency and load rating will ...

San Marcos, CA—June 8, 2017—Process and plant engineers in heavy industrial facilities responsible for optimizing combustion or pre-heated air to large boilers, stack emissions monitoring and ...

A bile duct stone is a gallstone that becomes trapped in the bile duct. Doctors may refer to this condition as choledocholithiasis. Having a gallstone in the bile duct can be intensely painful.