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Há 2 dias · Palladium is also used in electronics, dentistry, medicine, hydrogen purification, chemical applications, groundwater treatment, and jewelry. Palladium is a key component of fuel cells, in which hydrogen and oxygen react to produce electricity, heat, and water. Ore deposits of palladium and other PGMs are rare.
Há 1 dia · Saint Lucia [9] is an island country of the West Indies in the eastern Caribbean. [10] The island was previously called Iouanalao and later Hewanorra, names given by the native Arawaks and Caribs (respectively), two Amerindian peoples. [11] Part of the Windward Islands of the Lesser Antilles, it is located north/northeast of the island of Saint ...
Há 3 dias · Battle of Monmouth. James Monroe ( / mənˈroʊ / mən-ROH; April 28, 1758 – July 4, 1831) was an American statesman, lawyer, diplomat, and Founding Father who served as the fifth president of the United States from 1817 to 1825, a member of the Democratic-Republican Party. He was the last Founding Father to serve as president as well as the ...
Há 1 dia · The 1800 United States presidential election was the fourth quadrennial presidential election. It was held from October 31 to December 3, 1800. In what is sometimes called the " Revolution of 1800 ", [2] [3] the Democratic-Republican Party candidate, Vice President Thomas Jefferson, defeated the Federalist Party candidate and incumbent ...
Há 2 dias · Morphine was first isolated between 1803 and 1805 by German pharmacist Friedrich Sertürner. This is believed to be the first isolation of a medicinal alkaloid from a plant. Merck began marketing it commercially in 1827. Morphine was more widely used after the invention of the hypodermic syringe in 1853–1855.
Há 1 dia · Im Juli 1803 bezog Friedrich seine Sommerwohnung in Dresden-Loschwitz. „Man könnte diese Periode in Friedrichs Malerleben überall die rügensche nennen, so viel und mannigfaltig hat er damals den poetischen Charakter der Insel (besonders in Sepia) dargestellt, ja wenn man Kosegarten den Sänger Rügens nennt, könnte Friedrich mit Recht der Maler Rügens heißen.“
Há 1 dia · Thomas Jefferson. Thomas Jefferson (April 13, 1743 [b] – July 4, 1826) was an American statesman, diplomat, lawyer, architect, philosopher, and Founding Father who served as the third president of the United States from 1801 to 1809. [6] He was the primary author of the Declaration of Independence.
