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Hydropower, or hydroelectric power, is one of the oldest and largest sources of renewable energy, which uses the natural flow of moving water to generate electricity. Hydropower currently accounts for 28.7% of total U.S. renewable electricity generation and about 6.2% of total U.S. electricity generation. While most people might associate the ...
The antituberculosis benefit of streptomycin was announced in 1945, although application was limited by the rapid development of resistance. para-Aminosalicylic acid, also discovered in 1945, when combined with streptomycin was found to greatly reduce the occurrence of drug resistance. In 1952, isoniazid opened the modern era of treatment; it ...
List of U.S. states. The following table is a list of all 50 states and their respective dates of statehood. The first 13 became states in July 1776 upon agreeing to the United States Declaration of Independence, and each joined the first Union of states between 1777 and 1781, upon ratifying the Articles of Confederation, its first constitution.
Feb 3, 2016 · These projects include about 2,300 dams and multi-purpose water resource developments that provide about 55,000 MW of hydroelectric generating capacity (about one-half of the nation's hydro capacity). 2005: Energy Policy Act, Public Law 109-58: 2008: Hydroelectric generation provides about six percent of the United States' electricity.
Aug 20, 2020 · Discovered in 1944, streptomycin, an injectable streptidine aminoglycoside antibiotic, was the first antimicrobial agent with proven activity against M. tuberculosis. In conjunction with isoniazid and para-aminosalicylic acid (PAS), streptomycin formed part of the first multidrug combination chemotherapy for TB, introduced in 1952.
Apr 27, 2022 · Streptomycin has been referred to as the “wonder drug” due to the transformative effect it had on the prognosis of patients suffering from tuberculosis when it was first discovered. It spurred the discovery and invention of antibiotic drugs within the category know as aminoglycosides. Over the decades, it has saved the lives of millions ...
This is a list of wars and rebellions involving the United States of America. Currently, there are 108 wars on this list, 4 of which are ongoing. 11 major wars include the American Revolutionary War, the War of 1812, the Indian Wars (which encompasses numerous armed conflicts), the Mexican–American War, the American Civil War, the Spanish-American War, World War I, World War II, the Cold War ...
