Some risk factors include tobacco use, alcohol use, having high cholesterol/diabetes, or a history of heart disease. Talk to your doctor about these risks and the benefits of using ospemifene. Who should not take Osphena? Show More
Some examples of signals are human voice, electrocardiogram, sign language, videos etc. There are several classification of signals such as Continuous time signal, discrete time signal and digital signal, random signals and non-random signals.
Below is a list of the most common signal blockers: 1  Terrain â Cell signal operates in line-of-sight fashion. Any terrain features between you and the cell tower â hills, mountains, ridges, bluffs, etc. â will block cell signals. 2  Man-made obstructions â In urban settings, buildings are the main blockers of cell signals.