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13 小時前 · The Russian Empire, also known as Imperial Russia or simply Russia,[e][f] was a vast realm that spanned most of northern Eurasia from its proclamation in November 1721 until its dissolution in March 1917. At its height in the late 19th century, it covered about 22,800,000 square kilometres (8,800,000 sq mi), roughly one-sixth of the world's ...
3 天前 · Antoni Gaudí i Cornet [3] ( / ɡaʊˈdi / gow-DEE, / ˈɡaʊdi / GOW-dee, Catalan: [ənˈtɔni ɣəwˈði]; [4] 25 June 1852 – 10 June 1926) was a Catalan architect and designer from Spain, known as the greatest exponent of Catalan Modernism. [5] Gaudí's works have a highly individualized, sui generis style. Most are located in Barcelona ...
- Architect
- 10 June 1926 (aged 73), Barcelona, Catalonia, Spain
3 天前 · Emma Charlotte Duerre Watson (born 15 April 1990) is an English actress. Known for her roles in both blockbusters and independent films, she has received a selection of accolades, including a Young Artist Award and three MTV Movie Awards. Watson has been ranked among the world's highest-paid actresses by Forbes and Vanity Fair, and was named ...
1 天前 · Hydrogen peroxide (H 2 O 2) is a nonplanar molecule with (twisted) C 2 symmetry; this was first shown by Paul-Antoine Giguère in 1950 using infrared spectroscopy.Although the O−O bond is a single bond, the molecule has a relatively high rotational barrier of 386 cm −1 (4.62 kJ/mol) for rotation between enantiomers via the trans configuration, and 2460 cm −1 (29.4 kJ/mol) via the cis ...
2 天前 · Lebanon (/ ˈ l ɛ b ə n ɒ n,-n ə n / LEB-ə-non, - nən; Arabic: ل ب ن ان, romanized: Lubnān, local pronunciation: [lɪbˈneːn]), officially the Republic of Lebanon, is a country in the Levant region of WestIt is bordered by Syria to the north and east, by Israel to the south, and by the Mediterranean Sea to the west; Cyprus lies a short distance away from the country's coastline.
1 天前 · cia .gov. The Central Intelligence Agency ( CIA) / ˌsiː.aɪˈeɪ /, known informally as the Agency [6] and historically as the Company, [7] is a civilian foreign intelligence service of the federal government of the United States tasked with gathering, processing, and analyzing national security information from around the world, primarily ...
2 天前 · Penicillins ( P, PCN or PEN) are a group of β-lactam antibiotics originally obtained from Penicillium moulds, principally P. chrysogenum and P. rubens. Most penicillins in clinical use are synthesised by P. chrysogenum using deep tank fermentation [2] and then purified. [3] [4] A number of natural penicillins have been discovered, but only two ...
