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Gao Xiaoxia
Gao Xiaoxia (; 1919 – 9 September 1998) was a Chinese chemist and an academician of the Chinese Academy of Science. She held leadership positions at Peking University and in the Chinese Chemical Society. Her contributions to analytical chemistry, particularly the development of microanalytical techniques in polarography, were instrumental in supporting the research and production of rare earths. Early life and education Gao was born in Xiaoshan, Zhejiang, in 1919. In 1944 she graduated from Jiaotong University in Shanghai, with a BSc in chemistry. She was the only woman in the class to earn a degree. While she was a student the chemistry laboratory was in an abandoned factory in the French Concession, because of the Second Sino-Japanese War. Gao was a classmate of chemist Xu Guangxian, whom she married in 1946. Gao and Xu passed national examinations for studying abroad in 1946. Xu traveled to the United States in 1948 where he attended graduate school at Washington U ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gao (surname)
Gao () is an East Asian surname of Chinese origin that can be literally translated as "high" or "tall". There are approximately 16 million living people with this surname. Some places, such as Taiwan, usually romanise this family name into "Kao". In Hong Kong, it is romanized to "Ko". In Macau, it is romanized to "Kou". In English, it is romanized to "Kauh". In 2019 it was the 19th most common surname in Mainland China. The Korean surname, " Ko" or "Koh", is derived from and written with the same Chinese character (高). Romanisation and pronunciation Origin According to ''Lüshi Chunqiu'', the earliest figure with the Gao surname was Gao Yuan (高元) who created dwellings in antiquity. Zhuanxu, the grandson of the Yellow Emperor, was also known as Gao Yang (高陽). Another origin of Gao is the Jiang (姜) surname. According to the Song dynasty encyclopedia '' Tongzhi'', an early ancestor was Gao Xi (高傒) who was granted the surname Gao in honour of his grandfather Prin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Columbia University
Columbia University (also known as Columbia, and officially as Columbia University in the City of New York) is a private research university in New York City. Established in 1754 as King's College on the grounds of Trinity Church in Manhattan, Columbia is the oldest institution of higher education in New York and the fifth-oldest institution of higher learning in the United States. It is one of nine colonial colleges founded prior to the Declaration of Independence. It is a member of the Ivy League. Columbia is ranked among the top universities in the world. Columbia was established by royal charter under George II of Great Britain. It was renamed Columbia College in 1784 following the American Revolution, and in 1787 was placed under a private board of trustees headed by former students Alexander Hamilton and John Jay. In 1896, the campus was moved to its current location in Morningside Heights and renamed Columbia University. Columbia scientists and scholars have ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Actinides
The actinide () or actinoid () series encompasses the 15 metallic chemical elements with atomic numbers from 89 to 103, actinium through lawrencium. The actinide series derives its name from the first element in the series, actinium. The informal chemical symbol An is used in general discussions of actinide chemistry to refer to any actinide. The 1985 IUPAC ''Red Book'' recommends that ''actinoid'' be used rather than ''actinide'', since the suffix ''-ide'' normally indicates a negative ion. However, owing to widespread current use, ''actinide'' is still allowed. Since ''actinoid'' literally means ''actinium-like'' (cf. ''humanoid'' or ''android''), it has been argued for semantic reasons that actinium cannot logically be an actinoid, but IUPAC acknowledges its inclusion based on common usage. All the actinides are f-block elements, except the final one (lawrencium) which is a d-block element. Actinium has sometimes been considered d-block instead of lawrencium, but the cla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lanthanides
The lanthanide () or lanthanoid () series of chemical elements comprises the 15 metallic chemical elements with atomic numbers 57–71, from lanthanum through lutetium. These elements, along with the chemically similar elements scandium and yttrium, are often collectively known as the rare-earth elements or rare-earth metals. The informal chemical symbol Ln is used in general discussions of lanthanide chemistry to refer to any lanthanide. All but one of the lanthanides are f-block elements, corresponding to the filling of the 4f electron shell. There is some dispute on whether lanthanum or lutetium is a d-block element, but lutetium is usually considered so by those who study the matter; it is included due to its chemical similarities with the other 14. All lanthanide elements form trivalent cations, Ln3+, whose chemistry is largely determined by the ionic radius, which decreases steadily from lanthanum to lutetium. These elements are called lanthanides because the elemen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Platinum Group
The platinum-group metals (abbreviated as the PGMs; alternatively, the platinoids, platinides, platidises, platinum group, platinum metals, platinum family or platinum-group elements (PGEs)) are six noble, precious metallic elements clustered together in the periodic table. These elements are all transition metals in the d-block (groups 8, 9, and 10, periods 5 and 6). The six platinum-group metals are ruthenium, rhodium, palladium, osmium, iridium, and platinum. They have similar physical and chemical properties, and tend to occur together in the same mineral deposits. However, they can be further subdivided into the iridium-group platinum-group elements (IPGEs: Os, Ir, Ru) and the palladium-group platinum-group elements (PPGEs: Rh, Pt, Pd) based on their behaviour in geological systems. The three elements above the platinum group in the periodic table (iron, nickel and cobalt) are all ferromagnetic; these, including the lanthanide element gadolinium, are the only known t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trace Elements
__NOTOC__ A trace element, also called minor element, is a chemical element whose concentration (or other measure of amount) is very low (a "trace amount"). They are classified into two groups: essential and non-essential. Essential trace elements are needed for many physiological and biochemical processes in both plants and animals. Not only do trace elements play a role in biological processes but they also serve as catalysts to engage in oxidation and reduction mechanisms. The exact definition depends on the field of science: * In analytical chemistry, a trace element is one whose average concentration is less than 100 parts per million (ppm) measured in the atomic count or less than 100 micrograms per gram. * In biochemistry, an essential trace element is a dietary element that is needed in very minute quantities for the proper growth, development, and physiology of the organism. The dietary elements or essential trace elements are those that are required to perform v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Labor Camp
A labor camp (or labour camp, see spelling differences) or work camp is a detention facility where inmates are forced to engage in penal labor as a form of punishment. Labor camps have many common aspects with slavery and with prisons (especially prison farms). Conditions at labor camps vary widely depending on the operators. Convention no. 105 of the United Nations International Labour Organization (ILO), adopted internationally on 27 June 1957, abolished camps of forced labor. In the 20th century, a new category of labor camps developed for the imprisonment of millions of people who were not criminals ''per se'', but political opponents (real or imagined) and various so-called undesirables under communist and fascist regimes. Some of those camps were dubbed "reeducation facilities" for political coercion, but most others served as backbones of industry and agriculture for the benefit of the state, especially in times of war. Precursors Early-modern states could exploi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kuomintang
The Kuomintang (KMT), also referred to as the Guomindang (GMD), the Nationalist Party of China (NPC) or the Chinese Nationalist Party (CNP), is a major political party in the Republic of China, initially on the Chinese mainland and in Taiwan after 1949. It was the sole party in China during the Republican Era from 1928 to 1949, when most of the Chinese mainland was under its control. The party retreated from the mainland to Taiwan on 7 December 1949, following its defeat in the Chinese Civil War. Chiang Kai-shek declared martial law and retained its authoritarian rule over Taiwan under the ''Dang Guo'' system until democratic reforms were enacted in the 1980s and full democratization in the 1990s. In Taiwanese politics, the KMT is the dominant party in the Pan-Blue Coalition and primarily competes with the rival Democratic Progressive Party (DPP). It is currently the largest opposition party in the Legislative Yuan. The current chairman is Eric Chu. The party origi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cultural Revolution
The Cultural Revolution, formally known as the Great Proletarian Cultural Revolution, was a sociopolitical movement in the People's Republic of China (PRC) launched by Mao Zedong in 1966, and lasting until his death in 1976. Its stated goal was to preserve Chinese communism by purging remnants of capitalist and traditional elements from Chinese society. The Revolution marked the effective commanding return of Mao –who was still the Chairman of the Chinese Communist Party (CCP)– to the centre of power, after a period of self-abstention and ceding to less radical leadership in the aftermath of the Mao-led Great Leap Forward debacle and the Great Chinese Famine (1959–1961). The Revolution failed to achieve its main goals. Launching the movement in May 1966 with the help of the Cultural Revolution Group, Mao charged that bourgeois elements had infiltrated the government and society with the aim of restoring capitalism. Mao called on young people to " bombard the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Korean War
, date = {{Ubl, 25 June 1950 – 27 July 1953 (''de facto'')({{Age in years, months, weeks and days, month1=6, day1=25, year1=1950, month2=7, day2=27, year2=1953), 25 June 1950 – present (''de jure'')({{Age in years, months, weeks and days, month1=6, day1=25, year1=1950) , place = Korean Peninsula, Yellow Sea, Sea of Japan, Korea Strait, China–North Korea border , territory = Korean Demilitarized Zone established * North Korea gains the city of Kaesong, but loses a net total of {{Convert, 1506, sqmi, km2, abbr=on, order=flip, including the city of Sokcho, to South Korea. , result = Inconclusive , combatant1 = {{Flag, First Republic of Korea, name=South Korea, 1949, size=23px , combatant1a = {{Plainlist , * {{Flagicon, United Nations, size=23px United Nations Command, United Nations{{Refn , name = nbUNforces , group = lower-alpha , On 9 July 1951 troop constituents were: US: 70.4%, ROK: 23.3% other UNC: 6.3%{{Cite ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Communist Party Of China
The Chinese Communist Party (CCP), officially the Communist Party of China (CPC), is the founding and sole ruling party of the People's Republic of China (PRC). Under the leadership of Mao Zedong, the CCP emerged victorious in the Chinese Civil War against the Kuomintang, and, in 1949, Mao proclaimed the establishment of the People's Republic of China. Since then, the CCP has governed China with eight smaller parties within its United Front and has sole control over the People's Liberation Army (PLA). Each successive leader of the CCP has added their own theories to the party's constitution, which outlines the ideological beliefs of the party, collectively referred to as socialism with Chinese characteristics. As of 2022, the CCP has more than 96 million members, making it the second largest political party by party membership in the world after India's Bharatiya Janata Party. The Chinese public generally refers to the CCP as simply "the Party". In 1921, Chen Duxiu and Li ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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