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Sigma Aldrich
Sigma-Aldrich (formally MilliporeSigma) is an American chemical, life science, and biotechnology company owned by the multinational chemical conglomerate Merck Group. Sigma-Aldrich was created in 1975 by the merger of Sigma Chemical Company and Aldrich Chemical Company. It grew through various acquisitions until it had over 9,600 employees and was listed on the Fortune 1000. The company has two United States headquarters, in St. Louis and Burlington, MA and has operations in approximately 40 countries. In 2015, the multinational chemical conglomerate Merck Group acquired Sigma-Aldrich for $17 billion. The company is currently a part of Merck's life science business and in combination with Merck's earlier acquired Millipore Corporation, Millipore, operates as MilliporeSigma. It is headquartered in Burlington, Massachusetts, United States. History Sigma Chemical Company of St. Louis and Aldrich Chemical Company of Milwaukee were both American specialty chemical companies when they ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Logo Merck KGaA 2015
A logo (abbreviation of logotype; ) is a graphic mark, emblem, or symbol used to aid and promote public identification and recognition. It may be of an abstract or figurative design or include the text of the name that it represents, as in a wordmark. In the days of hot metal typesetting, a logotype was one word cast as a single piece of type (e.g. "The" in ATF Garamond), as opposed to a Typographic ligature, ligature, which is two or more letters joined, but not forming a word. By extension, the term was also used for a uniquely set and arranged typeface or colophon (publishing), colophon. At the level of mass communication and in common usage, a company's logo is today often synonymous with its trademark or brand.Wheeler, Alina. ''Designing Brand Identity'' © 2006 John Wiley & Sons, Inc. (page 4) Etymology Online Etymology Dictionary, Douglas Harper's ''Online Etymology Dictionary'' states that the first surviving written record of the term 'logo' dates back to 1937, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The RNAi Consortium
The RNAi Consortium, or TRC, is a public-private partnership whose mission is to create libraries of small hairpin RNAs (shRNAs) for 15'000 human and 15'000 mouse genes. These libraries should help the scientific community to analyse gene function by RNAi. The consortium is based at the Broad Institute of the MIT and Harvard University, and includes 6 MIT- and Harvard-associated institutions and 5 international life sciences organizations. Verified RNAi clones and entire libraries are made available both by Sigma-Aldrich and Open Biosystems. Hairpin selection A set of candidate hairpins are selected based on the 1sRefseq transcript from each NCBI gene. They should be 21mers, be at least 25bp from start of the coding sequence and no closer than 150bp from its end. Candidates are scored based on various empirical rules (see the Broad Institute's web site for a complete lis and then BLAST (biotechnology), BLASTed against two transcriptome sets. Hairpins that are unique for a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chemistry
Chemistry is the scientific study of the properties and behavior of matter. It is a physical science within the natural sciences that studies the chemical elements that make up matter and chemical compound, compounds made of atoms, molecules and ions: their composition, structure, properties, behavior and the changes they undergo during chemical reaction, reactions 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 prop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chemical Synthesis
Chemical synthesis (chemical combination) is the artificial execution of chemical reactions to obtain one or several products. This occurs by physical and chemical manipulations usually involving one or more reactions. In modern laboratory uses, the process is reproducible and reliable. A chemical synthesis involves one or more compounds (known as '' reagents'' or ''reactants'') that will experience a transformation under certain conditions. Various reaction types can be applied to formulate a desired product. This requires mixing the compounds in a reaction vessel, such as a chemical reactor or a simple round-bottom flask. Many reactions require some form of processing (" work-up") or purification procedure to isolate the final product. The amount produced by chemical synthesis is known as the '' reaction yield''. Typically, yields are expressed as a mass in grams (in a laboratory setting) or as a percentage of the total theoretical quantity that could be produced based ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isotopes
Isotopes are distinct nuclear species (or ''nuclides'') of the same chemical element. They have the same atomic number (number of protons in their nuclei) and position in the periodic table (and hence belong to the same chemical element), but different nucleon numbers (mass numbers) due to different numbers of neutrons in their nuclei. While all isotopes of a given element have similar chemical properties, they have different atomic masses and physical properties. The term isotope is derived from the Greek roots isos ( ἴσος "equal") and topos ( τόπος "place"), meaning "the same place"; thus, the meaning behind the name is that different isotopes of a single element occupy the same position on the periodic table. It was coined by Scottish doctor and writer Margaret Todd in a 1913 suggestion to the British chemist Frederick Soddy, who popularized the term. The number of protons within the atom's nucleus is called its atomic number and is equal to the number of el ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reagents
In chemistry, a reagent ( ) or analytical reagent is a substance or compound added to a system to cause a chemical reaction, or test if one occurs. The terms ''reactant'' and ''reagent'' are often used interchangeably, but reactant specifies a substance ''consumed'' in the course of a chemical reaction. ''Solvents'', though involved in the reaction mechanism, are usually not called reactants. Similarly, ''catalysts'' are not consumed by the reaction, so they are not reactants. In biochemistry, especially in connection with enzyme-catalyzed reactions, the reactants are commonly called substrates. Definitions Organic chemistry In organic chemistry, the term "reagent" denotes a chemical ingredient (a compound or mixture, typically of inorganic or small organic molecules) introduced to cause the desired transformation of an organic substance. Examples include the Collins reagent, Fenton's reagent, and Grignard reagents. Analytical chemistry In analytical chemistry, a reage ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inorganic Chemicals
An inorganic compound is typically a chemical compound that lacks carbon–hydrogen bondsthat is, a compound that is not an organic compound. The study of inorganic compounds is a subfield of chemistry known as ''inorganic chemistry''. Inorganic compounds comprise most of the Earth's crust, although the compositions of the deep mantle remain active areas of investigation. All allotropes (structurally different pure forms of an element) and some simple carbon compounds are often considered inorganic. Examples include the allotropes of carbon (graphite, diamond, buckminsterfullerene, graphene, etc.), carbon monoxide , carbon dioxide , carbides, and salts of inorganic anions such as carbonates, cyanides, cyanates, thiocyanates, isothiocyanates, etc. Many of these are normal parts of mostly organic systems, including organisms; describing a chemical as inorganic does not necessarily mean that it cannot occur within living things. History Friedrich Wöhler's conversion of ammoni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Organic Compound
Some chemical authorities define an organic compound as a chemical compound that contains a carbon–hydrogen or carbon–carbon bond; others consider an organic compound to be any chemical compound that contains carbon. For example, carbon-containing compounds such as alkanes (e.g. methane ) and its derivatives are universally considered organic, but many others are sometimes considered inorganic, such as certain compounds of carbon with nitrogen and oxygen (e.g. cyanide ion , hydrogen cyanide , chloroformic acid , carbon dioxide , and carbonate ion ). 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, and even ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fine Chemicals
In chemistry, fine chemicals are complex, single, pure chemical substances, produced in limited quantities in multipurpose plants by multistep batch chemical or biotechnological processes. They are described by exacting specifications, used for further processing within the chemical industry and sold for more than $10/kg (see the comparison of fine chemicals, commodities and specialties). The class of fine chemicals is subdivided either on the basis of the added value (building blocks, advanced intermediates or active ingredients), or the type of business transaction, namely standard or exclusive products. Fine chemicals are produced in limited volumes ( $10/kg) according to exacting specifications, mainly by traditional organic synthesis in multipurpose chemical plants. Biotechnical processes are gaining ground. Fine chemicals are used as starting materials for specialty chemicals, particularly pharmaceuticals, biopharmaceuticals and agrochemicals. Custom manufactu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aldrich Logo
Aldrich may refer to: Places United States *Aldrich, Alabama, unincorporated community * Aldrich, Minnesota, city * Aldrich Township, Wadena County, Minnesota * Aldrich, Missouri, village People * Aldrich (surname), a surname (including a list of people with the surname) People with the given name *Aldrich Ames (born 1941), American intelligence officer convicted of spying for the Soviet Union and Russia * Aldrich Robert Burgess (1918–1983), American film director Other uses *Aldrich, subsidiary of Sigma-Aldrich#Aldrich; a life science and high technology company *Aldrich Killian Aldrich Killian is a supervillain appearing in American comic books published by Marvel Comics. The character first appeared in ''Iron Man'' vol. 4 #1 (Jan. 2005) and was created by Warren Ellis and Adi Granov. Guy Pearce portrayed a retooled ver ..., fictional Marvel Comics supervillain * Aldrich, Devourer of Gods, an antagonist in the video game ''Dark Souls III'' See also * Aldrick {{disam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Avista Capital Partners
Avista Capital Partners, LLP is an American private equity firm headquartered in New York City focused on growth capital and leveraged buyout investments in middle-market companies in the domestic healthcare sector. History The firm was founded in 2005 by Steven Webster, Thompson Dean and David Burgstahler, as a spinoff from Credit Suisse's private equity arm DLJ Merchant Banking Partners (Dean was head of DLJMBP). Avista's spinoff from Credit Suisse was at the same time as private equity groups from other leading investment banks were formed including JPMorgan Chase's CCMP Capital, Citigroup's Court Square Capital Partners, Deutsche Bank's MidOcean Partners, and Morgan Stanley's Metalmark Capital. In 2007, the firm closed its first fund at $2 billion. This included a commitment from predecessor Credit Suisse, whereas fellow spin-off Diamond Castle did not. Avista’s second fund closed with $1.8 billion of commitments, which was lower than its original target between $2.5 an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Invitrogen
Invitrogen is one of several brands under the Thermo Fisher Scientific corporation. The product line includes various subbrands of biotechnology products, such as machines and consumables for polymerase chain reaction, reverse transcription, cloning, culturing, stem cell production, cell therapy, regenerative medicine, immunotherapy, transfection, DNA/RNA purification, diagnostic tests, antibodies, and immunoassays. The predecessor corporation was Invitrogen Corporation (formerly traded as ), headquartered in Carlsbad, California. In 2008, a merger between Applied Biosystems and Invitrogen was finalized, creating Life Technologies. The latter was acquired by Thermo Fisher Scientific in 2014. History Founding Invitrogen was founded in 1987 by Lyle Turner, Joe Fernandez, and William McConnell and was incorporated in 1989. The company initially found success with its kits for molecular cloning—notably, The Librarian, a kit for making cDNA libraries, and the FastTrack K ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
