A density functional is proposed that combines a modern treatment of semilocal interactions with an exact constraint for long-range dielectric screening. The method achieves gold-standard accuracy for ...

A bone density test measures how much calcium and minerals are in your bones to see if you are at risk for fractures. The test is quick and painless, taking 10 to 30 minutes, and results are ready in ...

To get maximal solutions under certain constraints, you can prevent specific edges to be in the solution. Functions to calculate the 12-gon chord fillings we used in our lower bound construction og ...

A Z-score compares your bone density to what’s normal for your age and can signal secondary osteoporosis. A low Z-score means your bones may be thinning due to another health problem or certain ...