Abstract: Positron Emission Tomography (PET) is a vital imaging modality widely used in clinical diagnosis and preclinical re-search but faces limitations in image resolution and signal-to-noise ratio ...

Photoshop cc tutorial showing how to add a romantic, star-diffusion (twinkle) effect to your photos and then confine the effect to specific areas. Lake Mead boaters issued warning: "Dangerous lake ...

The history of human progress is, in many ways, the history of technology’s diffusion. Among these advances, a few—what economists call general-purpose technologies—have had the greatest impact on ...