THE transportation of optical images has been carried out hitherto with the aid of lenses or mirrors or both. As with all optical systems, aberrations are introduced and the parts have to be aligned ...

Figure 2: Predicted probability (solid line) with 95 % confidence limits (dashed line) of having Pro(7) in NPY, calculated by logistic regression analysis with respect to serum total cholesterol level ...

Getting your hair to look sleek, straight, and healthy can feel like solving a difficult math equation. Using hot styling tools to straighten hair strips your hair of moisture, causing breakage. Over ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Somer G. Anderson is CPA, doctor of accounting, and an accounting and finance professor who ...