42,772 articles
Manifest and latent content analysis
Manifest and latent content analysis are two levels of analysis in qualitative content analysis, formalized by Graneheim and Lundman in 2004: manifest describes what is explicitly stated, latent interprets underlying meaning.
Manifold
A manifold is a topological space in which every point has a neighborhood homeomorphic to Euclidean space, so curved shapes like spheres and spacetimes can be studied with ordinary calculus.
Manifold optimization
Manifold optimization is a family of numerical methods for minimizing functions on smooth manifolds, such as orthogonal or fixed-rank matrices, with applications in machine learning and signal processing.
Manijeh Razeghi
Manijeh Razeghi is an Iranian-born physicist and electrical engineer who pioneered MOCVD growth of III-V semiconductors, produced the first commercial fiber-optic telecom lasers, and leads Northwestern's Center for Quantum Devices.
Manjul Bhargava
Manjul Bhargava, born in 1974, is a Canadian-American number theorist at Princeton University who won the 2014 Fields Medal for new methods in the geometry of numbers.
Mann–Kendall test
The Mann–Kendall test is a nonparametric statistical test that detects a monotonic upward or downward trend in a time series, widely used in atmospheric and hydrologic research.
Mann–Whitney U test
The Mann–Whitney U test, also called the Wilcoxon rank-sum test, is a nonparametric statistical test comparing two independent samples, and the standard nonparametric alternative to the t-test.
Mannanase
Mannanase, also called β-mannanase, is a glycoside hydrolase enzyme that cleaves mannan polysaccharides in plant cell walls, produced by microbes and used in feed, detergents, and oil recovery.
Manne Siegbahn
Manne Siegbahn, full name Karl Manne Georg Siegbahn, was a Swedish physicist who won the 1924 Nobel Prize in Physics for his research in X-ray spectroscopy at Lund and Uppsala.
Mannich reaction
The Mannich reaction is an organic reaction, developed by Carl Mannich in 1912, adding a carbonyl compound to an imine to form a carbon–carbon bond and a Mannich base.
Manning formula
The Manning formula, also called the Manning equation, is an empirical formula estimating water flow velocity or discharge in open channels, introduced by Robert Manning in 1889.
Mannitol
Mannitol, also known as manna sugar or Osmitrol, is a naturally abundant sugar alcohol used as a low-calorie sweetener and as an intravenous osmotic diuretic for intracranial pressure.
Mannose
Mannose, or D-mannose, is a six-carbon aldose sugar with the formula C6H12O6 that differs from glucose only at carbon 2; it occurs in mannans and glycoproteins and treats MPI-deficient congenital disorder of glycosylation.
Mannuronic acid
Mannuronic acid is a uronic acid, the oxidized sugar derived from D-mannose, whose beta form makes up alginate with guluronic acid and gives brown seaweeds their strength.
Manos Mavrikakis
Manos Mavrikakis is a professor of chemical and biological engineering at the University of Wisconsin–Madison who designs catalysts from first-principles calculations, with awards including the 2019 Gabor A. Somorjai Award.
Mantel clock
A mantel clock is a small, typically spring-driven clock made to stand on a mantel shelf above a fireplace, classified by case form rather than by mechanism.
Mantel test
The Mantel test is a permutation-based statistical test that assesses the association between two distance matrices for the same objects, such as geographic and genetic distances.
Mantel–Haenszel method
The Mantel–Haenszel method is a statistical technique for combining stratified two-by-two tables into a single adjusted estimate of an effect, introduced by Nathan Mantel and William Haenszel in 1959.
Mantle (geology)
The mantle is the mostly solid silicate layer of Earth between the crust and core, about 2,900 km thick, whose slow flow drives plate tectonics and volcanism.
Mantle convection
Mantle convection is the slow creeping flow of Earth's solid mantle, which moves a few centimeters per year and drives the plate tectonics responsible for earthquakes, mountain ranges, and volcanoes.
Mantle plume
A mantle plume is a buoyant upwelling of hot, low-viscosity rock rising through Earth's mantle, proposed in the 1970s to explain hotspot volcanism; the classic example is the Hawaiian chain.
Mantle transition zone
The mantle transition zone (MTZ) is the layer of Earth's mantle between about 410 and 660 km depth, separating the upper mantle from the lower mantle.
Manto Fossae
Manto Fossae: a 536 km system of fossae, long narrow linear depressions, on Venus at 63.6°N, 64.9°E, IAU-named in 1991 for a Greek war goddess, part of the Sigrun-Manto deformation belt near Fortuna Tessera.
Manuel Alcarazo
Manuel Alcarazo (born 1978 in Alcalá de Guadaíra, Spain) is a Spanish chemist, professor of organic chemistry at Göttingen since 2015, known for cationic phosphine ligands and gold catalysis.
Manuel Bibes
Manuel Bibès (born 1976) is a French physicist and CNRS Research Director at the Laboratoire Albert Fert, a pioneer of oxitronics who received the CNRS Silver Medal in 2025.
Manuel Cardona Castro
Manuel Cardona Castro (1934–2014) was a Spanish-born condensed matter physicist known for optical spectroscopy of solids and for founding the Max Planck Institute for Solid State Research.
Manuel Endres
Manuel Endres is a German-born experimental physicist, professor of physics at Caltech since 2021, who builds optical tweezer arrays of individually controlled atoms for quantum science.
Manuel Peimbert
Manuel Peimbert is a Mexican astronomer at UNAM known for work on planetary nebulae and the temperature-fluctuation (t²) formalism, elected to the US National Academy of Sciences in 1987.
Manvantara (मन्वन्तर)
Manvantara (मन्वन्तर) is a unit of time in Hindu cosmology denoting the period of one Manu, lasting 71 caturyugas; 14 manvantaras with intervals form one kalpa, a day of Brahmā.
Many Labs
Many Labs is a series of crowdsourced, multi-laboratory replication projects in psychology, first published in 2014, testing whether classic findings replicate across independent samples.