Trimer (other)
Trimer may refer to: * Trimer (chemistry), a reaction product composed of three identical molecules * Protein trimer, a compound of three macromolecules non-covalently bound * Efimov trimer, a weakly bound quantum mechanical state of three identical particles * Trimer, Ille-et-Vilaine, a commune in France See also * Trimery (botany), having three parts in a distinct whorl of a plant structure * ''Trimerus'', Latin name of the Tremiti Islands The Tremiti Islands (, ), also literarily known as Isole Diomedee (" Diomedean Islands", from Greek ), are an archipelago in the Adriatic Sea, some offshore to the north of the Gargano Peninsula. They constitute a of Italy's Province of Foggi ..., Italy * tri, a prefix * -mer, an affix * Trimmer (other) {{disambiguation ...
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Trimer (chemistry)
In chemistry, a trimer (; ) is a molecule or polyatomic anion formed by combination or association of three molecules or ions of the same substance. In technical jargon, a trimer is a kind of oligomer derived from three identical Precursor (chemistry), precursors often in competition with polymerization. Examples Alkyne trimerization In 1866, Marcellin Berthelot reported the first example of cyclotrimerization, the conversion of acetylene to benzene. This process was commercialized: : Nitrile trimerization Symmetrical 1,3,5-triazines are prepared by trimerization of certain nitriles such as cyanogen chloride. Cyanogen chloride and cyanogen bromide each trimerize at elevated temperatures over a carbon catalyst. The chloride gives cyanuric chloride: : The bromide has an extended shelflife when refrigerated. Like the chloride, it undergoes ab exothermic trimerization to form cyanuric bromide. This reaction is catalyzed by traces of bromine, metal salts, acids and bases. For th ...
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Protein Trimer
image:4tsv bio r 250.jpg, thumbnail, 400px, Trimeric form of a TNF-α mutant In biochemistry, a protein trimer is a Macromolecule, macromolecular Complex (chemistry), complex formed by three, usually covalent bond, non-covalently bound, macromolecules like proteins or nucleic acids. A protein trimer often occurs from the assembly of a protein's Protein quaternary structure, quaternary structure. The non-covalent interactions between the Hydrophobe, hydrophobic and Hydrophile, hydrophilic regions on the polypeptides units help to stabilize the quaternary structure. Since a protein trimer is composed of multiple polypeptide subunits, it is considered an oligomer. A homotrimer would be formed by three identical molecules. A heterotrimer would be formed by three different macromolecules. Type II Collagen is an example of homotrimeric protein, while Type I collagen is an AAB-type heterotrimeric protein. An example of viral protein homotrimeric protein is mammarenavirus of Z matrix prote ...
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Efimov Trimer
The Efimov effect is an effect in the quantum mechanics of few-body systems predicted by the Russian theoretical physicist V. N. Efimov in 1970. Efimov's effect is where three identical bosons interact, with the prediction of an infinite series of excited three-body energy levels when a two-body state is exactly at the dissociation threshold. One corollary is that there exist bound states (called Efimov states) of three bosons even if the two-particle attraction is too weak to allow two bosons to form a pair. A (three-particle) Efimov state, where the (two-body) sub-systems are unbound, is often depicted symbolically by the Borromean rings. This means that if one of the particles is removed, the remaining two fall apart. In this case, the Efimov state is also called a Borromean state. Theory Pair interactions among three identical bosons will approach "Resonance (particle physics)" as the binding energy of some two-body bound state approaches zero, or equivalently, the s-wave s ...
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Trimer, Ille-et-Vilaine
Trimer () is a commune in the Ille-et-Vilaine department of Brittany in northwestern France. Population See also *Communes of the Ille-et-Vilaine department The following is a list of the 332 communes of the Ille-et-Vilaine department of France. The communes cooperate in the following intercommunalities (as of 2025):

Merosity
Merosity (from the greek "méros," which means "having parts")) refers to the number of component parts in a distinct whorl of a plant structure. The term is most commonly used in the context of a flower where it refers to the number of sepals in a whorl of the calyx, the number of petals in a whorl of the corolla, the number of stamens in a whorl of the androecium, or the number of carpels in a whorl of the gynoecium. The term may also be used to refer to the number of leaves in a leaf whorl. The adjective ''n''-merous refers to a whorl of ''n'' parts, where ''n'' is any integer greater than one. In nature, five or three parts per whorl have the highest frequency of occurrence, but four or two parts per whorl are not uncommon. Two consecutive whorls of dimerous petals are often mistaken for tetramerous petals. If all of the whorls in a given floral arrangement have the same merosity, the flower is said to be isomerous, otherwise the flower is anisomerous. For example, '' Trilli ...
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Tremiti Islands
The Tremiti Islands (, ), also literarily known as Isole Diomedee (" Diomedean Islands", from Greek ), are an archipelago in the Adriatic Sea, some offshore to the north of the Gargano Peninsula. They constitute a of Italy's Province of Foggia, Apulia and form part of the Gargano national park. The archipelago is composed of 5 islands: San Domino, San Nicola, Capraia, Cretaccio, and Pianosa. The islands were used for the internment of political prisoners during Benito Mussolini's Fascist regime. It was also the prison of Julia the Younger, the granddaughter of Augustus. The islands are now an important tourist attraction because of the clear waters surrounding them. Up to 100,000 visitors come to the islands in the summer season. Ferry services from the mainland operate from Termoli, Vieste, Rodi Garganico and Capoiale, while Alidaunia offers flights from San Domino Heliport to Foggia and Vieste. Toponym The origin of the name of the islands is uncertain. Some of the theo ...
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Numerical Prefix
Numeral or number prefixes are prefixes derived from numerals or occasionally other numbers. In English and many other languages, they are used to coin numerous series of words. For example: *triangle, quadrilateral, pentagon, hexagon, octagon (shape with 3 sides, 4 sides, 5 sides, 6 sides, 8 sides) * simplex, duplex (communication in only 1 direction at a time, in 2 directions simultaneously) * unicycle, bicycle, tricycle (vehicle with 1 wheel, 2 wheels, 3 wheels) * dyad, triad, tetrad (2 parts, 3 parts, 4 parts) * twins, triplets, quadruplets (multiple birth of 2 children, 3 children, 4 children) * biped, quadruped, hexapod (animal with 2 feet, 4 feet, 6 feet) * September, October, November, December ( 7th month, 8th month, 9th month, 10th month) * binary, ternary, octal, decimal, hexadecimal (numbers expressed in base 2, base 3, base 8, base&nb ...
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