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The mass fraction of isotactic (mm) triads is a common quantitative measure of tacticity. When the stereochemistry of a macromolecule is considered to be a Bernoulli process, the triad composition can be calculated from the probability P m of a diad being m type. For example, when this probability is 0.25 then the probability of finding:
The enrichment by evaporation process may require up to one-and-a-half years, when the brine reaches a lithium content of 6%. [118] The final processing in this example is done near the city of Antofagasta on the coast where pure lithium carbonate , lithium hydroxide , and lithium chloride are produced from the brine.
William A Gardner (born Allen William Mclean, November 4, 1942) is a theoretically inclined electrical engineer who specializes in the advancement of the theory of statistical time-series analysis and statistical inference with emphasis on signal processing algorithm design and performance analysis. [1]
Deuterium is produced for industrial, scientific and military purposes, by starting with ordinary water—a small fraction of which is naturally occurring heavy water—and then separating out the heavy water by the Girdler sulfide process, distillation, or other methods.
The Haber process, [1] also called the Haber–Bosch process, is the main industrial procedure for the production of ammonia. [ 2 ] [ 3 ] It converts atmospheric nitrogen (N 2 ) to ammonia (NH 3 ) by a reaction with hydrogen (H 2 ) using finely divided iron metal as a catalyst:
In 1929, with the onset of the Cultural Revolution in the Soviet Union and an upsurge of radical militancy in the Party and Komsomol, a powerful "hard line" in favor of mass closing of churches and arrests of priests became dominant and evidently won Stalin's approval. Secret "hard line" instructions were issued to local party organizations ...
Communist Party of Brazil (formerly Red Fraction) (1990s): The Partido Comunista do Brasil – Fração Vermelha originated as an anti-revisionist split of the Communist Party of Brazil in the 1990s. [10] In late 2022 they began appearing as the "Communist Party of Brazil" on documents, removing "Red Fraction" from their name. [11]