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Mechanochromic polymers
Mechanochromic polymers are macromolecular materials that change color, transparency, or luminescence in response to mechanical deformation, supporting stress visualization, autonomous damage detection, and soft robotics.
Mechanoluminescence
Mechanoluminescence is the emission of light from a solid material under mechanical stress such as pressure, deformation, friction, or fracture, first recorded by Francis Bacon in 1605 and used in self-powered stress sensors.
Mechanophore
A mechanophore is a molecular unit that changes structure or color when mechanical force is applied, typically built into polymers; the best-known example, spiropyran, turns colored under load, enabling stress mapping and damage imaging in materials.
Mechanosynthesis
Mechanosynthesis is chemical synthesis driven by mechanical energy, typically ball milling or extrusion, where solid powders react with no bulk solvent; it is a green, solvent-free technique.
Mechanotransduction
Mechanotransduction is the process by which cells convert mechanical forces, such as shear stress, tension, and matrix stiffness, into biochemical signals that influence cell fate, tissue regeneration, and diseases like fibrosis and cancer.
Mechlorethamine
Mechlorethamine, also called chlormethine or nitrogen mustard (HN2), is an alkylating chemotherapy drug developed at Yale in the 1940s, the first systemic chemotherapy agent approved in the United States.
Meclofenamic acid
Meclofenamic acid, sold as meclofenamate sodium, is a fenamate NSAID once used for arthritis and menstrual pain, now mainly a veterinary drug for horses and dogs.
Mecrylate
Mecrylate (mecrilate, methyl cyanoacrylate, CAS 137-05-3) is the INN for methyl 2-cyanoacrylate, C5H5NO2, a moisture-polymerizing superglue monomer; a phase-3, unapproved small molecule deemed too toxic for clinical tissue adhesive use.
Media coverage of climate change
Media coverage of climate change, also called global warming in the media, is reporting on climate change by newspapers, television, radio, and online media, tracked since 1988.
Media market
A media market, also known as a designated market area or television market, is a geographic area where people receive the same local TV stations, measured as one audience.
Medial axis transform
The medial axis transform (MAT) is a shape representation describing an object by the centers of its maximally inscribed balls and their radii, introduced by Harry Blum in 1967.
Median
The median, also called the median average, is the middle value of an ordered data set and the 50th percentile, one of three common measures of central value.
Median (geometry)
A median of a triangle is the line segment joining a vertex to the midpoint of the opposite side. Each triangle has three medians, meeting at the centroid.
Median absolute deviation
The median absolute deviation (MAD) is a robust measure of statistical dispersion, computed as the median of absolute deviations from the data's median, resisting distortion by outliers.
Median income
Median income is the amount that divides an income distribution into two equal groups, half above and half below, preferred over the mean because high incomes skew the average.
Median test
The median test, also known as Mood's median test, is a nonparametric statistical test of whether two or more independent samples come from populations with the same median.
Mediated moderation
Mediated moderation is a statistical analysis method in psychology and the social sciences that tests whether the interaction effect of a predictor and moderator operates through a mediator.
Mediation (statistics)
Mediation analysis, also known as mediation or statistical mediation, decomposes an exposure's total effect on an outcome into indirect effects through a mediator and direct effects that bypass it.
Mediation model
A mediation model is a statistical model that splits an independent variable's effect on an outcome into direct and indirect pathways through an intermediate mediator variable.
Medical physics
Medical physics is a branch of applied physics that uses physics principles in the prevention, diagnosis, and treatment of human diseases, underpinning diagnostic imaging, radiotherapy, and nuclear medicine.
Medical Research Institute
The Medical Research Institute, also known as MRI, is Sri Lanka's national reference laboratory and biomedical research center in Colombo, founded in 1900 as the Soysa Bacteriological Institute.
Medical thermometer
A medical thermometer, also called a clinical thermometer, measures human body temperature by contact or by sensing infrared radiation, and its readings guide the detection and tracking of fever.
Medicine Lake Volcano
Medicine Lake Volcano, also known as Medicine Lake Highlands, is a large shield volcano in the Cascade Range of northern California, the largest in the range by volume.
Medieval Warm Period
The Medieval Warm Period, also called the Medieval Climate Anomaly, was an interval of relative warmth in parts of the North Atlantic region from roughly 950 to 1250 CE.
Medipix
Medipix is a family of hybrid pixel detector readout chips developed by CERN collaborations, counting individual photons for noise-free X-ray imaging, space dosimetry, and material analysis.
Mediterranean climate
The Mediterranean climate, or dry summer climate, is a temperate climate with wet winters and dry summers, occurring in five regions including the Mediterranean Basin, California, and central Chile.
Mediterranean Oscillation
The Mediterranean Oscillation is an atmospheric teleconnection pattern, a pressure seesaw between the western and eastern Mediterranean basins, measured by an index introduced by Conte and colleagues in 1989.
Mediterranean Outflow Water
Mediterranean Outflow Water is the warm, highly saline water mass formed where dense Mediterranean water exits Gibraltar, mixes in the Gulf of Cádiz, and spreads into the North Atlantic.
Mediterranean Sea
The Mediterranean Sea, also known as the Med, is a semi-enclosed sea between Europe, Africa, and Asia, connected to the Atlantic through the Strait of Gibraltar.
Mediterranean tropical-like cyclone
A Mediterranean tropical-like cyclone, commonly called a medicane, is a small, hurricane-like storm that forms over the Mediterranean Sea one to a few times per year.