Elixir of Life. Meaning, origin, examples of the use of phraseological units

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WINGED WORDS, PHRASEOLOGICAL UNITS
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Winged words, phraseological units. Meaning, history of origin, examples of use

Winged words, phraseological units

Directory / Winged words, phraseological units

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Elixir of Life

Winged words

Phraseologism: Elixir of Life.

Meaning: About what invigorates, gives strength (book).

Origin: The elixir of life is a magical drink that alchemists tried to get in order to prolong human life, to preserve youth.

Random phraseology:

An inevitable accident at sea.

Meaning:

About the risk of some kind of incident, incident, accident.

Origin:

The official term from the records management of the maritime department of pre-revolutionary Russia. The Soviet admiral Ivan Stepanovich Isakov (1894-1967) spoke about its origin in one of his publications. He wrote that this phrase "was entered into logbooks and special acts when it was not possible to explain the inexplicable or prove the unprovable ... This phrase in the resolution or in the summary of the act closed any dark matter in order to avoid responsibility or shift it to Neptune. Here why, having lost an anchor or a tool, breaking the sails, in all these cases of sluggish or inept actions of the crew, in order not to be financially responsible for the damage caused to the treasury, the commander could consign them to oblivion by ordering an entry in the logbook, which ended with the traditional ending: " ... what happened due to an inevitable accident at sea. "It remained for the higher authorities to approve this record upon the return of the ship to the port, after which it acquired legal force" (Leisure of the old admiral // Week. 1967. No. 34).

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Effect of anions on the solubility of polymers 06.11.2021

Chemists from the USA and the Czech Republic have established a relationship between the curvature of the conditional surface of a macromolecule and dissociation constants for various cations and anions. It turned out that ions interact more strongly with a polymer if its planar structure deforms the network of water hydrogen bonds. This interaction helps the polymer to be in solution.

A group of scientists led by Jan Heyda from the University of Chemistry and Technology in Prague and Paul S. Cremer from the University of Pennsylvania investigated the interaction of weakly coordinating anions with polyethylene oxide polymer of different lengths. They suggested that molecules with different surface curvature affect the network of hydrogen bonds of surrounding water molecules in different ways, which, in turn, leads to a change in the degree of ion adsorption.

The authors showed the relationship between the ion adsorption energy and the degree of distortion of the hydrogen bond network. The results obtained confirmed the hypothesis that macromolecules with a flat surface strongly distort the structure of water and, therefore, interact well with weakly coordinating anions, which easily penetrate to the polymer surface through a deformed network of hydrogen bonds. On the contrary, the surface of most small molecules cannot be called flat, which results in no energy gain, high hydrophobicity, and poor solubility.

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The data obtained will affect not only the study of hydrophobic interactions and solution chemistry of polymers, but also other areas of science, for example, the study of supramolecular compounds of the guest-host type.

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