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Sildenafil, sold under the brand name Viagra, among others, is a medication used to treat erectile dysfunction and pulmonary arterial hypertension. [4] [8] It is also sometimes used off-label for the treatment of certain symptoms in secondary Raynaud's phenomenon. [9]
The observation of minutes to hours of X-ray flashes after a short gamma-ray burst is consistent with small particles of a primary object like a neutron star initially swallowed by a black hole in less than two seconds, followed by some hours of lesser energy events, as remaining fragments of tidally disrupted neutron star material (no longer ...
X-ray spectromicroscopy has been used to analyse the reactions of pigments in paintings. For example, in analysing colour degradation in the paintings of van Gogh. [140] Using X-ray for inspection and quality control: the differences in the structures of the die and bond wires reveal the left chip to be counterfeit. [141]
The so-called long-duration gamma-ray bursts produce a total energy output of about 10 44 joules (as much energy as the Sun will produce in its entire life-time) but in a period of only 20 to 40 seconds. Gamma rays are approximately 50% of the total energy output.
China's waste import ban, instated at the end of 2017, prevented foreign inflows of waste products. Starting in early 2018, the government of China , under Operation National Sword , banned the import of several types of waste , including plastics with a contamination level of above 0.05 percent. [ 1 ]
Ray Donovan is an American crime drama television series created by Ann Biderman for Showtime.The twelve-episode first season premiered on June 30, 2013. [1] [2] [3]The pilot episode broke viewership records, becoming the biggest premiere of all time on Showtime. [4]
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