Transit agencies across North America are planning, funding and building the next generation of bus facilities for ...

Abstract: The pantograph-catenary system is widely used in most electrified rail networks around the world to transmit continuous electric current to the train. Most studies about the ...

High cortisol can slow metabolism, which causes weight gain even without changes in eating habits. Anxiety, depression, and insomnia are common with elevated cortisol levels. Having high cortisol can ...

Abstract: The active pantograph is a promising technology to suppress contact force (CF) fluctuation in pantograph–catenary systems (PCSs). Recently, the rapid development of reinforcement learning ...

There are classic signs of pregnancy such as morning sickness or missing your period, but there are other physical changes that may indicate pregnancy even earlier. Here are 10 common signs of ...

Osteoporosis is sometimes called a "silent disease" because it often has no symptoms. In many cases, osteoporosis has been progressing for years, but a person is only diagnosed when they break a bone.

Early pancreatic cancers often do not cause any signs or symptoms. By the time they do cause symptoms, they have often grown very large or already spread outside the pancreas. People with pancreatic ...

If you have what feels like razor bumps or acne on the back of your neck or scalp, you may have acne keloidalis nuchae. Find out what can help. A dermatologist is a medical doctor who specializes in ...

Emotional immaturity occurs when someone can't control their emotions, accept responsibility for actions, or cope with difficulties. Emotional immaturity may be associated with narcissistic ...