42,772 articles
Metropolis–Hastings algorithm
The Metropolis–Hastings algorithm, also called the Metropolis method, is a Markov chain Monte Carlo method that samples from a probability distribution known only up to a normalizing constant.
Metso Courier
Metso Courier is a family of on-stream analyzers made by Metso that measures the elemental composition of mineral slurries, most commonly in froth flotation circuits.
Mettler Toledo
Mettler Toledo is a Swiss-American manufacturer of precision instruments for laboratory weighing, industrial measurement, product inspection, and process analytics, formed by the 1989 merger of Toledo Scale and Mettler.
MeV ultrafast electron diffraction
MeV ultrafast electron diffraction (MeV-UED) is a pump-probe technique that uses femtosecond pulses of mega-electronvolt electrons to track atomic structural changes, forming movies of molecular motion.
Mevalonic acid
Mevalonic acid, also called hiochic acid, is a chiral six-carbon hydroxy acid that serves as the central intermediate of the mevalonate pathway, which makes terpenes and steroids.
Mexiletine
Mexiletine is an oral class Ib antiarrhythmic drug related to lidocaine, developed by Boehringer Ingelheim in the late 1960s and used for life-threatening ventricular arrhythmias and nondystrophic myotonia.
Meyer Abraham Girshick
Meyer Abraham Girshick (1908–1955) was an American statistician, professor at Stanford from 1948, known for work in sequential analysis and, with David Blackwell, the 1954 book Theory of Games and Statistical Decisions.
Meyer–Schuster rearrangement
The Meyer–Schuster rearrangement is an acid- or metal-catalyzed organic reaction that converts propargylic alcohols into α,β-unsaturated carbonyl compounds such as enones, first reported by Meyer and Schuster in 1922.
Mg3(Sb,Bi)2 thermoelectrics
Mg3(Sb,Bi)2 thermoelectrics are Zintl-phase semiconductors, solid solutions of Mg3Sb2 and Mg3Bi2, discovered as a high-performance n-type system in 2016 with figures of merit matching commercial bismuth telluride while avoiding tellurium.
Mg3Bi2-based thermoelectrics
Mg3Bi2-based thermoelectrics are semiconducting and semimetallic materials based on magnesium bismuthide, Mg3Bi2, alloyed with Mg3Sb2, developed as low-cost, tellurium-free alternatives to Bi2Te3 for heat-to-electricity conversion and solid-state cooling.
Mg3Sb2-based thermoelectrics
Mg3Sb2-based thermoelectrics are thermoelectric materials built on magnesium antimonide (Mg3Sb2) and its Bi-alloyed derivatives Mg3(Sb,Bi)2, Zintl-phase semiconductors that convert heat into electricity, reaching zT near 2.0 at 723 K.
MHD simulation codes for fusion
MHD simulation codes for fusion are specialized software packages that model plasma equilibrium, stability, and instabilities in tokamaks and stellarators, including NIMROD, JOREK, M3D-C1, and BOUT++.
Mibefradil
Mibefradil, sold as Posicor, is a calcium channel blocker marketed by Roche for hypertension and chronic stable angina until its voluntary withdrawal in June 1998.
Mica
Mica is a group of 37 layered silicate minerals whose perfect cleavage lets crystals split into thin, flexible sheets used for electrical insulation and cosmetics.
Micafungin
Micafungin (brand name Mycamine, development code FK463) is an echinocandin antifungal drug given once daily by intravenous infusion for invasive and esophageal candidiasis, working by blocking fungal cell wall synthesis.
Micaiah John Muller Hill
Micaiah John Muller Hill (1856–1929) was a British mathematician who held chairs at Birmingham and University College London, known for Hill's spherical vortex and Hill's tetrahedra.
Mice (set theory)
In inner model theory, a mouse is an iterable premouse, a canonical fine-structural model introduced by Dodd and Jensen in the 1970s to measure consistency strength.
Micellar catalysis
Micellar catalysis is an organic chemistry method that runs reactions in water using self-assembled surfactant micelles to concentrate reactants, cutting organic solvent use, reaction temperatures, and metal-catalyst loadings.
Micellar electrokinetic chromatography
Micellar electrokinetic chromatography, also known as MEKC, is a capillary electrophoresis mode introduced by Shigeru Terabe and co-workers in 1984 that separates neutral molecules using micellar pseudostationary phases.
Micelle
A micelle, also called micella, is an aggregate of colloidal dimensions formed by amphiphilic surfactant molecules in solution, in equilibrium with the free molecules that compose it.
Micellization
Micellization is the spontaneous, strongly cooperative association of amphiphilic molecules into colloidal aggregates called micelles, driven by the hydrophobic effect; the term entered colloid chemistry in 1913 via J.W. McBain.
Micha Perles
Micha Perles (Hebrew: מיכה אשר פרלס), born 1936, is an Israeli mathematician at the Hebrew University of Jerusalem known for the Perles configuration, Gale diagrams, and the Sauer–Perles–Shelah lemma.
Michael A. Bevan
Michael A. Bevan is a Johns Hopkins professor of Chemical & Biomolecular Engineering known for measuring nanoscale colloidal interactions and light-controlled assembly of colloidal materials.
Michael A. Duncan
Michael A. Duncan is an American physical chemist at the University of Georgia since 1983, known for infrared spectroscopy of metal ion complexes and laser vaporization cluster sources.
Michael A. Hickner
Michael A. Hickner is an American materials scientist who works on ion-containing polymers, electrochemical membranes, and additive manufacturing; he spent 2007 to 2022 at Penn State and joined Michigan State University in January 2023.
Michael A. Nielsen
Michael A. Nielsen is a physicist who co-authored the standard quantum computing textbook with Ike Chuang, then left academia to advocate open science and tools for thought.
Michael A. Robb
Michael A. Robb, also published as M. A. Robb, is a theoretical and computational chemist who holds the Chair in Chemistry at Imperial College London and is a Fellow of the Royal Society.
Michael A. Wulder
Michael A. Wulder is a Canadian senior research scientist with the Canadian Forest Service in Victoria, British Columbia, known for national forest mapping using Landsat satellite data.
Michael acceptor
A Michael acceptor is the electrophilic partner in a Michael reaction: an α,β-unsaturated carbonyl or similar compound whose β-carbon receives a carbon nucleophile, forming a new carbon-carbon bond.
Michael addition
The Michael addition, or Michael addition reaction, is a conjugate (1,4) addition of a nucleophile to the β-carbon of an electron-poor alkene, forming a new carbon–carbon or carbon–heteroatom bond.