Abstract: With the wide access to distributed renewable energy, the operation characteristics of power systems become increasingly complex, and the problem of voltage stability becomes increasingly ...

Heart disease is the leading cause of death in the United States. Since researchers first established the link between diet, cholesterol and heart disease in the 1950s, risk for heart disease has been ...

This year’s ozone hole over Antarctica ranked among the smallest since the early 1990s, reflecting steady progress from decades of global action under the Montreal Protocol. Declining chlorine levels ...

Value stream management involves people in the organization to examine workflows and other processes to ensure they are deriving the maximum value from their efforts while eliminating waste — of ...

Curious builder of digital services for real people, usually found fixing old systems and making them a bit less painful ...

Free radicals have a terrible reputation. These reactive and unstable molecules have been associated with cancer, aging, and degenerative diseases such as Alzheimer's. Yet the body constantly produces ...

One of the lesser-known apps in the Google Drive online suite is Google Forms. It's an easy, intuitive way to create a web form for other people to enter information into. You can use it for employee ...

Chemists at UCL have shown how two of biology’s most fundamental ingredients, RNA (ribonucleic acid) and amino acids, could have spontaneously joined together at the origin of life four billion years ...

When a directive is attached to an input element that uses formControlName, and the underlying form is re-initialized (by assigning a new FormGroup), the directive loses its valueChanges subscription.

Abstract: This paper presents a reactive power control technique for photovoltaic grid-connected inverters utilizing an unfolding inverter topology. Traditional grid-frequency unfolding inverters and ...