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Anna J. Harrison
Anna Jane Harrison (December 23, 1912 – August 8, 1998) was an American organic chemist and a professor of chemistry at Mount Holyoke College for nearly forty years. She was the first female President of the American Chemical Society, and the recipient of twenty honorary degrees. She was nationally known for her teaching and was active nationally and internationally as a supporter of women in science. Early life and education Anna Jane Harrison was born in Benton City, Missouri, on December 23, 1912. Her parents, Albert Harrison and Mary Katherine Jones Harrison, were farmers. Her father died when she was seven, leaving her mother to manage the family farm and to care for Harrison and her elder brother. She first became interested in science while attending high school in Mexico, Missouri. She received her B.A. in 1933 in chemistry, a B.A. in 1935 in education, a M.A. in 1937 in chemistry, and a Ph.D. in 1940 in physical chemistry, all from the University of Missouri in Col ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Benton City, Missouri
Benton City is a village in Audrain County, Missouri, United States. The population was 104 at the 2010 census. History Benton City was platted in 1881. The village is named after Thomas Hart Benton. Geography Benton City is located at (39.134798, -91.764443). According to the United States Census Bureau, the village has a total area of , all land. Demographics 2010 census As of the census of 2010, there were 104 people, 49 households, and 37 families residing in the village. The population density was . There were 59 housing units at an average density of . The racial makeup of the village was 99.0% White and 1.0% from other races. Hispanic or Latino of any race were 1.0% of the population. There were 49 households, of which 16.3% had children under the age of 18 living with them, 63.3% were married couples living together, 10.2% had a female householder with no husband present, 2.0% had a male householder with no wife present, and 24.5% were non-families. 22.4% of all h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Army
The United States Army (USA) is the land service branch of the United States Armed Forces. It is one of the eight U.S. uniformed services, and is designated as the Army of the United States in the U.S. Constitution.Article II, section 2, clause 1 of the United States Constitution (1789). See alsTitle 10, Subtitle B, Chapter 301, Section 3001 The oldest and most senior branch of the U.S. military in order of precedence, the modern U.S. Army has its roots in the Continental Army, which was formed 14 June 1775 to fight the American Revolutionary War (1775–1783)—before the United States was established as a country. After the Revolutionary War, the Congress of the Confederation created the United States Army on 3 June 1784 to replace the disbanded Continental Army.Library of CongressJournals of the Continental Congress, Volume 27/ref> The United States Army considers itself to be a continuation of the Continental Army, and thus considers its institutional inception to be th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chemical Manufacturers Association
American Chemistry Council (ACC), formerly known as the Manufacturing Chemists' Association (at its founding in 1872) and then as the Chemical Manufacturers' Association (from 1978 until 2000), is an industry trade association for American chemical companies, based in Washington, D.C. Activities The mission of the American Chemistry Council is to promote the interests of corporations of the chemical industry. The trade group represents US chemical companies as well as the plastics and chlorine industries, formerly known as the American Plastics Council, the Center for the Polyurethanes Industry and the Chlorine Chemistry Council. ACC implemented the Responsible Care program in 1988. At least 52 countries have implemented this initiative. It is managed at a global level by the International Council of Chemical Associations. ACC has a political action committee that gives money to members of the Congress of the United States. ACC launched a $35 million "essential2" public relat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Association Of American Colleges
The American Association of Colleges and Universities (AAC&U) is a global membership organization headquartered in Washington, D.C., United States. It works to improve quality and equity in undergraduate education and advance liberal education. Founded in 1915, AAC&U comprises more than 1,000 member institutions in the US and abroad, including accredited public and private colleges, community colleges, research universities, and comprehensive universities. Publications AAC&U publishes ''Liberal Education'' magazine, sponsors meetings and institutes for campus teams and publishes reports and monographs A monograph is a specialist work of writing (in contrast to reference works) or exhibition on a single subject or an aspect of a subject, often by a single author or artist, and usually on a scholarly subject. In library cataloging, ''monograph .... The Multi-State Collaborative to Advance Quality Student Learning The Multi-State Collaborative to Advance Quality Student Learn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Association For The Advancement Of Science
The American Association for the Advancement of Science (AAAS) is an American international non-profit organization with the stated goals of promoting cooperation among scientists, defending scientific freedom, encouraging scientific responsibility, and supporting scientific education and science outreach for the betterment of all humanity. It is the world's largest general scientific society, with over 120,000 members, and is the publisher of the well-known scientific journal ''Science''. History Creation The American Association for the Advancement of Science was created on September 20, 1848, at the Academy of Natural Sciences in Philadelphia, Pennsylvania. It was a reformation of the Association of American Geologists and Naturalists. The society chose William Charles Redfield as their first president because he had proposed the most comprehensive plans for the organization. According to the first constitution which was agreed to at the September 20 meeting, the goal of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Science Board
The National Science Board (NSB) of the United States establishes the policies of the National Science Foundation (NSF) within the framework of applicable national policies set forth by the President and the Congress. The NSB also serves as an independent policy advisory body to the President and Congress on science and engineering research and education issues. The Board has a statutory obligation to "...render to the President and to the Congress reports on specific, individual policy matters related to science and engineering and education in science engineering, as Congress or the President determines the need for such reports," (e.g. Science and Engineering Indicators; Report to Congress on Mid-scale Instrumentation at the National Science Foundation). All Board members are presidential appointees. NSF's director serves as an ex officio 25th member and is appointed by the President and confirmed by the US Senate. Mission statement The Board's mission statement states: "Suppor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Photodecomposition
Photodissociation, photolysis, photodecomposition, or photofragmentation is a chemical reaction in which molecules of a chemical compound are broken down by photons. It is defined as the interaction of one or more photons with one target molecule. Photodissociation is not limited to visible light. Any photon with sufficient energy can affect the chemical bonds of a chemical compound. Since a photon's energy is inversely proportional to its wavelength, electromagnetic radiations with the energy of visible light or higher, such as ultraviolet light, x-rays, and gamma rays can induce such reactions. Photolysis in photosynthesis Photolysis is part of the light-dependent reaction or light phase or photochemical phase or Hill reaction of photosynthesis. The general reaction of photosynthetic photolysis can be given in terms of photons as: :\ce + 2 \text \longrightarrow \ce The chemical nature of "A" depends on the type of organism. Purple sulfur bacteria oxidize hydrogen sulfide () ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Absorption Spectra
Absorption spectroscopy refers to spectroscopic techniques that measure the absorption of radiation, as a function of frequency or wavelength, due to its interaction with a sample. The sample absorbs energy, i.e., photons, from the radiating field. The intensity of the absorption varies as a function of frequency, and this variation is the absorption spectrum. Absorption spectroscopy is performed across the electromagnetic spectrum. Absorption spectroscopy is employed as an analytical chemistry tool to determine the presence of a particular substance in a sample and, in many cases, to quantify the amount of the substance present. Infrared and ultraviolet–visible spectroscopy are particularly common in analytical applications. Absorption spectroscopy is also employed in studies of molecular and atomic physics, astronomical spectroscopy and remote sensing. There is a wide range of experimental approaches for measuring absorption spectra. The most common arrangement is to direct ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Far Ultraviolet
Ultraviolet (UV) is a form of electromagnetic radiation with wavelength from 10 nm (with a corresponding frequency around 30 PHz) to 400 nm (750 THz), shorter than that of visible light, but longer than X-rays. UV radiation is present in sunlight, and constitutes about 10% of the total electromagnetic radiation output from the Sun. It is also produced by electric arcs and specialized lights, such as mercury-vapor lamps, tanning lamps, and black lights. Although long-wavelength ultraviolet is not considered an ionizing radiation because its photons lack the energy to ionization, ionize atoms, it can cause chemical reactions and causes many substances to glow or fluorescence, fluoresce. Consequently, the chemical and biological effects of UV are greater than simple heating effects, and many practical applications of UV radiation derive from its interactions with organic molecules. Short-wave ultraviolet light damages DNA and sterilizes surfaces with which it co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ultraviolet
Ultraviolet (UV) is a form of electromagnetic radiation with wavelength from 10 nanometer, nm (with a corresponding frequency around 30 Hertz, PHz) to 400 nm (750 Hertz, THz), shorter than that of visible light, but longer than X-rays. UV radiation is present in sunlight, and constitutes about 10% of the total electromagnetic radiation output from the Sun. It is also produced by electric arcs and specialized lights, such as mercury-vapor lamps, tanning lamps, and black lights. Although long-wavelength ultraviolet is not considered an ionizing radiation because its photons lack the energy to ionization, ionize atoms, it can cause chemical reactions and causes many substances to glow or fluorescence, fluoresce. Consequently, the chemical and biological effects of UV are greater than simple heating effects, and many practical applications of UV radiation derive from its interactions with organic molecules. Short-wave ultraviolet light damages DNA and sterilizes surf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Organic Compound
In chemistry, organic compounds are generally any chemical compounds that contain carbon-hydrogen or carbon-carbon bonds. Due to carbon's ability to catenate (form chains with other carbon atoms), millions of organic compounds are known. The study of the properties, reactions, and syntheses of organic compounds comprise the discipline known as organic chemistry. For historical reasons, a few classes of carbon-containing compounds (e.g., carbonate salts and cyanide salts), along with a few other exceptions (e.g., carbon dioxide, hydrogen cyanide), are not classified as organic compounds and are considered inorganic. Other than those just named, little consensus exists among chemists on precisely which carbon-containing compounds are excluded, making any rigorous definition of an organic compound elusive. Although organic compounds make up only a small percentage of Earth's crust, they are of central importance because all known life is based on organic compounds. Living t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Annapolis, Maryland
Annapolis ( ) is the capital city of the U.S. state of Maryland and the county seat of, and only incorporated city in, Anne Arundel County. Situated on the Chesapeake Bay at the mouth of the Severn River, south of Baltimore and about east of Washington, D.C., Annapolis forms part of the Baltimore–Washington metropolitan area. The 2020 census recorded its population as 40,812, an increase of 6.3% since 2010. This city served as the seat of the Confederation Congress, formerly the Second Continental Congress, and temporary national capital of the United States in 1783–1784. At that time, General George Washington came before the body convened in the new Maryland State House and resigned his commission as commander of the Continental Army. A month later, the Congress ratified the Treaty of Paris of 1783, ending the American Revolutionary War, with Great Britain recognizing the independence of the United States. The city and state capitol was also the site of the 1786 An ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
