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Avrom I. Medalia
Avrom Izak Medalia (3 February 192320 June 2002) was a Cabot scientist known for contributions to understanding electrical conductivity and dynamic properties of carbon black filled rubbers Education Medalia was a graduate of the Boston Latin School. In 1942, he received the A.B. degree in chemistry from Harvard University. He then studied synthetic rubber and emulsion polymerization under I. M. Kalthoff at the University of Minnesota, receiving a Ph.D. in analytical chemistry in 1948. Career Medalia's first post-academic position was with the Brookhaven National Laboratory from 1949 to 1952. He was associate director of sponsored research at Boston University from 1952 to 1955. He started at Cabot in 1956 and continued there until his retirement in 1984. At Cabot, he held various positions in research and management. His most cited work concerned the effect of carbon black on the dynamic properties of rubber, in particular the Payne effect. He also did highly infl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cabot Corporation
Cabot Corporation is an American specialty chemicals and performance materials company headquartered in Boston, Massachusetts. The company operates in over 20 countries with 36 manufacturing plants, eight research and development facilities and 28 sales offices. History Cabot Corporation was founded by Godfrey Lowell Cabot in 1882 when he applied for a patent for a "carbon black making apparatus". The company incorporated in the state of Delaware in 1960. In 1993, a team of Cabot researchers developed a process for modifying the surface of carbon, allowing chemists and researchers to prepare surface modified carbon black products with properties never before associated with carbon materials. This breakthrough led to the development of new technologies and products including aqueous inkjet colorants, for printer ink the basis of Cabot's Inkjet Colorants business unit, which was founded in 1996. In 2003, Cabot developed a commercialized process that allows continuous production ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brookhaven National Laboratory
Brookhaven National Laboratory (BNL) is a United States Department of Energy national laboratories, United States Department of Energy national laboratory located in Upton, New York, a hamlet of the Brookhaven, New York, Town of Brookhaven. It was formally established in 1947 at the site of Camp Upton, a former List of United States Army installations, U.S. Army base on Long Island. Located approximately 60 miles east of New York City, it is managed by Stony Brook University and Battelle Memorial Institute. Research at BNL includes nuclear and high energy physics, energy science and technology, environmental and bioscience, nanoscience, and national security. The 5,300 acre campus contains several large research facilities, including the Relativistic Heavy Ion Collider and National Synchrotron Light Source II. Seven Nobel Prizes have been awarded for work conducted at Brookhaven Lab. Overview BNL operations are overseen by a Department of Energy Site office, is staffed by approx ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polymer Scientists And Engineers
A polymer () is a substance or material that consists of very large molecules, or macromolecules, that are constituted by many repeating subunits derived from one or more species of monomers. Due to their broad spectrum of properties, both synthetic and natural polymers play essential and ubiquitous roles in everyday life. Polymers range from familiar synthetic plastics such as polystyrene to natural biopolymers such as DNA and proteins that are fundamental to biological structure and function. Polymers, both natural and synthetic, are created via polymerization of many small molecules, known as monomers. Their consequently large molecular mass, relative to small molecule compounds, produces unique physical properties including toughness, high elasticity, viscoelasticity, and a tendency to form amorphous and semicrystalline structures rather than crystals. Polymers are studied in the fields of polymer science (which includes polymer chemistry and polymer physi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2002 Deaths
This is a list of lists of deaths of notable people, organized by year. New deaths articles are added to their respective month (e.g., Deaths in ) and then linked below. 2025 2024 2023 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 Earlier years ''Deaths in years earlier than this can usually be found in the main articles of the years.'' See also * Lists of deaths by day * Deaths by year (category) {{DEFAULTSORT:deaths by year ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1923 Births
In Greece, this year contained only 352 days as 13 days was skipped to achieve the calendrical switch from Julian to Gregorian Calendar. It happened there that Wednesday, 15 February ''(Julian Calendar)'' was followed by Thursday, 1 March ''(Gregorian Calendar).'' Events January–February * January 9, January 5 – Lithuania begins the Klaipėda Revolt to annex the Klaipėda Region (Memel Territory). * January 11 – Despite strong British protests, troops from France and Belgium Occupation of the Ruhr, occupy the Ruhr area, to force Germany to make reparation payments. * January 17 (or 9) – First flight of the first rotorcraft, Juan de la Cierva's Cierva C.4 autogyro, in Spain. (It is first demonstrated to the military on January 31.) * February 5 – Australian cricketer Bill Ponsford makes 429 runs to break the world record for the highest first-class cricket score for the first time in his third match at this level, at Melbourne Cricket Ground, giving the Victor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Melvin Mooney Distinguished Technology Award
The Melvin Mooney Distinguished Technology Award is a professional award conferred by the ACS Rubber Division. Established in 1983, the award is named after Melvin Mooney, developer of the Mooney viscometer and of the Mooney-Rivlin hyperelastic law. The award consists of an engraved plaque and prize money. The medal honors individuals "who have exhibited exceptional technical competency by making significant and repeated contributions to rubber science and technology". Recipients 1980s * 1982 J. Roger Beatty - Senior Research Fellow at B. F. Goodrich known for development of rubber testing instruments and methods * 1983 Aubert Y. Coran - Monsanto researcher responsible for invention of thermoplastic elastomer Geolast * 1984 Eli M. Dannenberg - Cabot scientist known for contributions to surface chemistry of carbon black * 1985 William M. Hess - Columbian Chemicals Company scientist known for contributions to characterization of carbon black dispersion in rubber * 1986 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Payne Effect
The Payne effect is a particular feature of the stress–strain behaviour of rubber, especially rubber compounds containing fillers such as carbon black. It is named after the British rubber scientist A. R. Payne, who made extensive studies of the effect (e.g., Payne 1962). The effect is sometimes also known as the Fletcher- Gent effect, after the authors of the first study of the phenomenon (Fletcher & Gent 1953). The effect is observed under cyclic loading conditions with small strain amplitudes, and is manifest as a dependence of the viscoelastic storage modulus on the amplitude of the applied strain. Above approximately 0.1% strain amplitude, the storage modulus decreases rapidly with increasing amplitude. At sufficiently large strain amplitudes (roughly 20%), the storage modulus approaches a lower bound. In that region where the storage modulus decreases the loss modulus shows a maximum. The Payne effect depends on the filler content of the material and vanishes for unfill ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boston University
Boston University (BU) is a Private university, private research university in Boston, Massachusetts, United States. BU was founded in 1839 by a group of Boston Methodism, Methodists with its original campus in Newbury (town), Vermont, Newbury, Vermont. It was chartered in Boston in 1869. The university is a member of the Association of American Universities and the Boston Consortium for Higher Education. The university has nearly 38,000 students and more than 4,000 faculty members and is one of Boston's largest employers. It offers bachelor's degrees, master's degrees, doctorates, and medical, dental, business, and law degrees through 17 schools and colleges on three urban campuses. The university is nonsectarian, though it retains its historical affiliation with the United Methodist Church. The main campus is situated along the Charles River in Boston's Fenway–Kenmore and Allston, Massachusetts, Allston neighborhoods, while the Boston University Medical Campus is locate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Minnesota
The University of Minnesota Twin Cities (historically known as University of Minnesota) is a public university, public Land-grant university, land-grant research university in the Minneapolis–Saint Paul, Twin Cities of Minneapolis and Saint Paul, Minnesota, United States. It is the Flagship#Colleges and universities in the United States, flagship institution of the University of Minnesota System and is organized into 19 colleges, schools, and other major academic units. The Twin Cities campus is the oldest and largest in the University of Minnesota system and has the List of United States university campuses by enrollment, ninth-largest (as of the 2022–2023 academic year) main campus student body in the United States, with 54,890 students at the start of the 2023–24 academic year. The campus comprises locations in Minneapolis and Falcon Heights, Minnesota, Falcon Heights, a suburb of St. Paul, approximately apart. The Minnesota Territorial Legislature drafted a charter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electrical Conductivity
Electrical resistivity (also called volume resistivity or specific electrical resistance) is a fundamental specific property of a material that measures its electrical resistance or how strongly it resists electric current. A low resistivity indicates a material that readily allows electric current. Resistivity is commonly represented by the Greek alphabet, Greek letter (Rho (letter), rho). The SI unit of electrical resistivity is the ohm-metre (Ω⋅m). For example, if a solid cube of material has sheet contacts on two opposite faces, and the Electrical resistance, resistance between these contacts is , then the resistivity of the material is . Electrical conductivity (or specific conductance) is the reciprocal of electrical resistivity. It represents a material's ability to conduct electric current. It is commonly signified by the Greek letter (Sigma (letter), sigma), but (kappa) (especially in electrical engineering) and (gamma) are sometimes used. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Izaak Kolthoff
Izaak Maurits (Piet) Kolthoff (February 11, 1894 – March 4, 1993) was an analytical chemist and chemistry educator. He is widely considered the father of analytical chemistry for his large volume of published research in diverse fields of analysis, his work to modernize and promote the field, and for advising a large number of students who went on to influential careers of their own. Kolthoff's best-known research contribution was the development of the "cold process" for producing synthetic rubber, which he undertook under the U.S. synthetic rubber program during World War II. He was also active in social causes, including promoting world peace and opposing nuclear weapons testing. Kolthoff received a PhD in chemistry from the University of Utrecht in his native Netherlands. In 1927, he immigrated to the United States, joining the faculty at the University of Minnesota, where he worked for more than 60 years. Early life and education Kolthoff was born in Almelo, Netherlan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
