The X-ray emissions from accretion disks sometimes flicker at certain frequencies. These signals are called quasi-periodic oscillations and are thought to be caused by material moving along the inner edge of the accretion disk (the innermost stable circular orbit). Skip to main content Thank you for visiting nature.com. You are using a browser ver

Plan de conduccion de vehiculos pesados estrategias de marketing para planes de conduccion de vehiculos pesados llegar a nuevos publicos Testing a product in foreign markets is a good way to establish your ultimate expansion objectives. A soft-launch into a market lets you road-test the market segmentation conducted during internal business audits