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Recent concepts

Review concepts whose canonical node records were recently created or updated.

49,387 concepts

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ConceptChangeWhenNode typeDomainIdentifier
Radiation
Emission or propagation of acoustic waves (SOUND), ELECTROMAGNETIC ENERGY waves (such as LIGHT; RADIO WAVES; GAMMA RAYS; or X-RAY…
Updated Phenomenon Physiology AMW:PHYS:010250
Radiation Effects
The effects of ionizing and nonionizing radiation upon living organisms, organs and tissues, and their constituents, and upon phy…
Updated Phenomenon Physiology AMW:PHYS:010253
Radiation Exposure
Phenomenon in which organisms are subjected to radiation.
Updated Phenomenon Physiology AMW:PHYS:010254
Radiation, Ionizing
ELECTROMAGNETIC RADIATION or particle radiation (high energy ELEMENTARY PARTICLES) capable of directly or indirectly producing IO…
Updated Phenomenon Physiology AMW:PHYS:010270
Radiation, Nonionizing
ELECTROMAGNETIC RADIATION or sonic radiation (SOUND WAVES) which does not produce IONS in matter through which it passes. The wav…
Updated Phenomenon Physiology AMW:PHYS:010274
Rain
Water particles that fall from the ATMOSPHERE.
Updated Phenomenon Physiology AMW:PHYS:010054
Rotation
Motion of an object in which either one or more points on a line are fixed. It is also the motion of a particle about a fixed poi…
Updated Phenomenon Physiology AMW:PHYS:010231
Snow
Frozen water crystals that fall from the ATMOSPHERE.
Updated Phenomenon Physiology AMW:PHYS:010060
Sublimation, Chemical
The process of solids transforming into a gaseous state or vice versa, without passing through a liquid state.
Updated Anatomical Process Physiology AMW:PHYS:010247
Terahertz Radiation
Non-ionizing electromagnetic energy in the frequency range of 100 gigahertz to 10 terahertz which spans from the mid-INFRARED RAY…
Updated Phenomenon Physiology AMW:PHYS:010194
Thermal Diffusion
The movement of molecules from one location to another as effected by temperature changes.
Updated Anatomical Process Physiology AMW:PHYS:010127
Tornadoes
Rotating column of air extending from a thunderstorm to the ground. Tornadoes generally produce damage paths of 100 yards wide or…
Updated Phenomenon Physiology AMW:PHYS:010064
Torsion, Mechanical
A twisting deformation of a solid body about an axis. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
Updated Phenomenon Physiology AMW:PHYS:010221
Vitrification
The transformation of a liquid to a glassy solid i.e., without the formation of crystals during the cooling process.
Updated Anatomical Process Physiology AMW:PHYS:010248
Volatilization
A phase transition from liquid state to gas state, which is affected by Raoult's law. It can be accomplished by fractional distil…
Updated Anatomical Process Physiology AMW:PHYS:010249
Volcanic Eruptions
The ash, dust, gases, and lava released by volcanic explosion. The gases are volatile matter composed principally of about 90% wa…
Updated Phenomenon Physiology AMW:PHYS:010169
Agglutination
The clumping together of suspended material resulting from the action of AGGLUTININS.
Updated Biochemical Process Physiology AMW:PHYS:020012
Amination
The creation of an amine. It can be produced by the addition of an amino group to an organic compound or reduction of a nitro gro…
Updated Biochemical Process Physiology AMW:PHYS:020020
Citric Acid Cycle
A series of oxidative reactions in the breakdown of acetyl units derived from GLUCOSE; FATTY ACIDS; or AMINO ACIDS by means of tr…
Updated Biochemical Process Physiology AMW:PHYS:020046
Cross Reactions
Serological reactions in which an antiserum against one antigen reacts with a non-identical but closely related antigen.
Updated Biochemical Process Physiology AMW:PHYS:120008
Cyclization
Changing an open-chain hydrocarbon to a closed ring. (McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed)
Updated Biochemical Process Physiology AMW:PHYS:020047
Deamination
The removal of an amino group (NH2) from a chemical compound.
Updated Biochemical Process Physiology AMW:PHYS:020051
Decarboxylation
The removal of a carboxyl group, usually in the form of carbon dioxide, from a chemical compound.
Updated Biochemical Process Physiology AMW:PHYS:020052
Esterification
The process of converting an acid into an alkyl or aryl derivative. Most frequently the process consists of the reaction of an ac…
Updated Biochemical Process Physiology AMW:PHYS:020069
Evolution, Chemical
Chemical and physical transformation of the biogenic elements from their nucleosynthesis in stars to their incorporation and subs…
Updated Biochemical Process Physiology AMW:PHYS:010100
Halogenation
Covalent attachment of HALOGENS to other compounds.
Updated Biochemical Process Physiology AMW:PHYS:020070
Hemadsorption
A phenomenon manifested by an agent or substance adhering to or being adsorbed on the surface of a red blood cell, as tuberculin …
Updated Biochemical Process Physiology AMW:PHYS:060043
Hemagglutination
The aggregation of ERYTHROCYTES by AGGLUTININS, including antibodies, lectins, and viral proteins (HEMAGGLUTINATION, VIRAL).
Updated Biochemical Process Physiology AMW:PHYS:020013
Hydrogenation
Addition of hydrogen to a compound, especially to an unsaturated fat or fatty acid. (From Stedman, 26th ed)
Updated Biochemical Process Physiology AMW:PHYS:020072
Hydroxylation
Placing of a hydroxyl group on a compound in a position where one did not exist before. (Stedman, 26th ed)
Updated Biochemical Process Physiology AMW:PHYS:020073