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Percy Lavon Julian
Percy Lavon Julian (April 11, 1899 – April 19, 1975) was an American research chemist and a pioneer in the chemical synthesis of medicinal drugs from plants. He was the first to synthesize the natural product physostigmine and was a pioneer in the industrial large-scale chemical synthesis of the human hormones progesterone and testosterone from plant sterols such as stigmasterol and sitosterol. His work laid the foundation for the steroid drug industry's production of cortisone, other corticosteroids, and birth control pills. He later started his own company to synthesize steroid intermediates from the wild Mexican yam. His work helped greatly reduce the cost of steroid intermediates to large multinational pharmaceutical companies, helping to significantly expand the use of several important drugs, including synthesizing cortisone. He received more than 130 chemical patents. He was one of the first African Americans to receive a doctorate in chemistry. He was the first African- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Montgomery, Alabama
Montgomery is the capital city of the U.S. state of Alabama and the county seat of Montgomery County. Named for the Irish soldier Richard Montgomery, it stands beside the Alabama River, on the coastal Plain of the Gulf of Mexico. In the 2020 census, Montgomery's population was 200,603. It is the second most populous city in Alabama, after Huntsville, and is the 119th most populous in the United States. The Montgomery Metropolitan Statistical Area's population in 2020 was 386,047; it is the fourth largest in the state and 142nd among United States metropolitan areas. The city was incorporated in 1819 as a merger of two towns situated along the Alabama River. It became the state capital in 1846, representing the shift of power to the south-central area of Alabama with the growth of cotton as a commodity crop of the Black Belt and the rise of Mobile as a mercantile port on the Gulf Coast. In February 1861, Montgomery was chosen the first capital of the Confederate States of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Corticosteroid
Corticosteroids are a class of steroid hormones that are produced in the adrenal cortex of vertebrates, as well as the synthetic analogues of these hormones. Two main classes of corticosteroids, glucocorticoids and mineralocorticoids, are involved in a wide range of physiological processes, including stress response, immune response, and regulation of inflammation, carbohydrate metabolism, protein catabolism, blood electrolyte levels, and behavior. Some common naturally occurring steroid hormones are cortisol (), corticosterone (), cortisone () and aldosterone (). (Note that cortisone and aldosterone are isomers.) The main corticosteroids produced by the adrenal cortex are cortisol and aldosterone. Classes * Glucocorticoids such as cortisol affect carbohydrate, fat, and protein metabolism, and have anti-inflammatory, immunosuppressive, anti-proliferative, and vasoconstrictive effects. Anti-inflammatory effects are mediated by blocking the action of inflammatory medi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phi Beta Kappa
The Phi Beta Kappa Society () is the oldest academic honor society in the United States, and the most prestigious, due in part to its long history and academic selectivity. Phi Beta Kappa aims to promote and advocate excellence in the liberal arts and sciences, and to induct the most outstanding students of arts and sciences at only select American colleges and universities. It was founded at the College of William and Mary on December 5, 1776, as the first collegiate Greek-letter fraternity and was among the earliest collegiate fraternal societies. Since its inception, 17 U.S. Presidents, 40 U.S. Supreme Court Justices, and 136 Nobel Laureates have been inducted members. Phi Beta Kappa () stands for ('), which means "Wisdom it. love of knowledgeis the guide it. helmsmanof life". Membership Phi Beta Kappa has chapters in only about 10% of American higher learning institutions, and only about 10% of these schools' Arts and Sciences graduates are invited to join the society. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fraternity House
North American fraternity and sorority housing refers largely to the houses or housing areas in which fraternity and sorority members live and work together. In addition to serving as housing, fraternity and sorority housing may also serve to host social gatherings, meetings, and functions that benefit the community. History The first fraternity house seems to have been located at Alpha Epsilon of Chi Psi at the University of Michigan around 1846. As fraternity membership was punishable by expulsion at many colleges at this time, the house was located deep in the woods. Fraternity chapter housing initially existed in two forms: lodges that served as meeting rooms and houses that had boarding rooms. The lodges came first and were largely replaced by houses with living accommodations. Lodges were often no more than rented rooms above stores or taverns. The idea of substantial fraternity housing caught on quickly, but was accomplished with much greater ease in the North as sou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Greencastle, Indiana
Greencastle is a city in Greencastle Township, Putnam County, Indiana, United States, and the county seat of Putnam County. It was founded in 1821 by Ephraim Dukes on a land grant. He named the settlement for his hometown of Greencastle, Pennsylvania. Greencastle was a village or town operating under authority of the Putnam County commissioners until March 9, 1849, when it became a town by special act of the local legislature. Greencastle, Indiana, officially became a city after an election held on July 8, 1861. The first mayor of Greencastle was E. R. Kercheval, a member of the Freemason Temple Lodge #47. The city became the county seat of Putnam County. The population was 10,326 at the 2010 census. It is located near Interstate 70 approximately halfway between Terre Haute and Indianapolis in the west-central portion of the state. Greencastle is well known as being the location of DePauw University. Education Public schools Greencastle's public schools are operated by the Gre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Post Office
The United States Postal Service (USPS), also known as the Post Office, U.S. Mail, or Postal Service, is an independent agency of the executive branch of the United States federal government responsible for providing postal service in the U.S., including its insular areas and associated states. It is one of the few government agencies explicitly authorized by the U.S. Constitution. The USPS, as of 2021, has 516,636 career employees and 136,531 non-career employees. The USPS traces its roots to 1775 during the Second Continental Congress, when Benjamin Franklin was appointed the first postmaster general; he also served a similar position for the colonies of the Kingdom of Great Britain. The Post Office Department was created in 1792 with the passage of the Postal Service Act. It was elevated to a cabinet-level department in 1872, and was transformed by the Postal Reorganization Act of 1970 into the U.S. Postal Service as an independent agency. Since the early 1980s, many dire ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
History Of Slavery In The United States
The legal institution of human chattel slavery, comprising the enslavement primarily of Africans and African Americans, was prevalent in the United States of America from its founding in 1776 until 1865, predominantly in the South. Slavery was established throughout European colonization in the Americas. From 1526, during early colonial days, it was practiced in what became Britain's colonies, including the Thirteen Colonies that formed the United States. Under the law, an enslaved person was treated as property that could be bought, sold, or given away. Slavery lasted in about half of U.S. states until abolition. In the decades after the end of Reconstruction, many of slavery's economic and social functions were continued through segregation, sharecropping, and convict leasing. By the time of the American Revolution (1775–1783), the status of enslaved people had been institutionalized as a racial caste associated with African ancestry. During and immediately follow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alabama State University
Alabama State University (ASU) is a public historically black university in Montgomery, Alabama. Founded in 1867, ASU is a member-school of the Thurgood Marshall College Fund. History Alabama State University was founded in 1867 as the Lincoln Normal School of Marion in Marion. In December 1873, the State Board accepted the transfer of title to the school after a legislative act was passed authorizing the state to fund a Normal School, and George N. Card was named president. Thus, in 1874, this predecessor of Alabama State University became America's first state-supported educational institution for blacks. This began ASU's history as a "teachers' college." In 1878, the second president, William Paterson, was appointed. He is honored as a founder of Alabama State University and was the president for 37 of the school's first 48 years. Paterson was instrumental in the move from Marion to Montgomery in 1887. In 1887, the university opened in its new location in Montgomery, b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
David Blackwell
David Harold Blackwell (April 24, 1919 – July 8, 2010) was an American statistician and mathematician who made significant contributions to game theory, probability theory, information theory, and statistics. He is one of the eponyms of the Rao–Blackwell theorem. He was the first African American inducted into the National Academy of Sciences, the first African American tenured faculty member at the University of California, Berkeley, and the seventh African American to receive a Ph.D. in mathematics. In 2012, President Obama posthumously awarded Blackwell the National Medal of Science. Blackwell was also a pioneer in textbook writing. He wrote one of the first Bayesian statistics textbooks, his 1969 ''Basic Statistics''. By the time he retired, he had published over 90 papers and books on dynamic programming, game theory, and mathematical statistics. Early life and education David Harold Blackwell was born on April 24, 1919, in Centralia, Illinois, to Mabel Johnson ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States National Academy Of Sciences
The National Academy of Sciences (NAS) is a United States nonprofit, non-governmental organization. NAS is part of the National Academies of Sciences, Engineering, and Medicine, along with the National Academy of Engineering (NAE) and the National Academy of Medicine (NAM). As a national academy, new members of the organization are elected annually by current members, based on their distinguished and continuing achievements in original research. Election to the National Academy is one of the highest honors in the scientific field. Members of the National Academy of Sciences serve '' pro bono'' as "advisers to the nation" on science, engineering, and medicine. The group holds a congressional charter under Title 36 of the United States Code. Founded in 1863 as a result of an Act of Congress that was approved by Abraham Lincoln, the NAS is charged with "providing independent, objective advice to the nation on matters related to science and technology. ... to provide scie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chemistry
Chemistry is the science, scientific study of the properties and behavior of matter. It is a natural science that covers the Chemical element, elements that make up matter to the chemical compound, compounds made of atoms, molecules and ions: their composition, structure, properties, behavior and the changes they undergo during a Chemical reaction, reaction with other Chemical substance, substances. Chemistry also addresses the nature of chemical bonds in chemical compounds. In the scope of its subject, chemistry occupies an intermediate position between physics and biology. It is sometimes called the central science because it provides a foundation for understanding both Basic research, basic and Applied science, applied scientific disciplines at a fundamental level. For example, chemistry explains aspects of plant growth (botany), the formation of igneous rocks (geology), how atmospheric ozone is formed and how environmental pollutants are degraded (ecology), the properties ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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