Network protocols that use aggressive retransmissions to compensate for packet loss due to congestion can increase congestion, even after the initial load has been reduced to a level that would not normally have induced network congestion. Such networks exhibit two stable states under the same level of load.
Beta blocker. Beta blocker, also written Î²-blocker, is a class of medications that are particularly used to manage cardiac arrhythmias, and to protect the heart from a second heart attack (myocardial infarction) after a first heart attack (secondary prevention).
The FDA has approved the proton pump inhibitors lansoprazole (Prevacid 24HR), omeprazole (Prilosec OTC), and esomeprazole (Nexium 24HR) for over-the-counter use to treat frequent heartburn (two or more times per week) for 14 days. All of these drugs are also available as prescriptions.