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- [[File:Quaternary ammonium cation.svg|upright|thumb|[[Quaternary ammonium cation]]. The Rs may be the same or different groups. (The Rs may In [[chemistry]], a '''quaternary compound''' is a compound consisting of exactly four chemical elements. ...3 KB (380 words) - 09:09, 18 October 2024
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- [[File:Quaternary ammonium cation.svg|upright|thumb|[[Quaternary ammonium cation]]. The Rs may be the same or different groups. (The Rs may In [[chemistry]], a '''quaternary compound''' is a compound consisting of exactly four chemical elements. ...3 KB (380 words) - 09:09, 18 October 2024
- ...phan synthase β-subunit from the hyperthermophile ''Thermotoga maritima''. Quaternary structure, steady-state kinetics, and putative physiological role | journal ...1 KB (146 words) - 17:10, 26 August 2023
- When the amine is a tertiary amine the reaction product is a quaternary ammonium salt in the [[Menshutkin reaction]]: ''N''-alkylation is a general and useful route to quaternary ammonium salts from tertiary amines, because overalkylation is not possible ...6 KB (841 words) - 01:53, 9 July 2022
- ...ee parts. In fact, arbitrarily large bases are possible. The analysis of quaternary, octal, and hexadecimal games show that these classes of games are markedly ...9 KB (1,448 words) - 20:51, 11 February 2025
- ...James Rose. 2003. "Subglacial till: the deforming glacier bed." Review of. Quaternary Science Reviews 22 (15):1659-85.</ref> ...3 KB (458 words) - 23:54, 28 January 2024
- ...ginia]].<ref>{{Cite journal |last=Harington |first=C. R. |date=1978 |title=Quaternary vertebrate faunas of Canada and Alaska and their suggested chronological se ...itself.<ref>{{Citation |last1=Schmitt |first1=D.N. |title=Changes in Late Quaternary Mammalian Biogeography in the Bonneville Basin |date=2016 |work=Lake Bonnev ...7 KB (934 words) - 03:07, 5 December 2024
- * [[Quaternary numeral system|Quaternary]]: The base-four numeral system with 0, 1, 2, and 3 as digits. ...9 KB (1,334 words) - 19:40, 24 January 2025
- ...ften divided into four different levels: primary, secondary, tertiary, and quaternary. ==Quaternary structure== ...18 KB (2,739 words) - 17:16, 5 December 2024
- ...the catalecticant vanishes when the form is a sum of five 4th powers. For quaternary quartics the catalecticant vanishes when the form is a sum of nine 4th powe ...3 KB (506 words) - 23:28, 13 December 2023
- ...synthase quarternary structure.png|thumb|right|300px|This image shows the quaternary structure of DAHP synthase.]] ...se cartoon quartenary structure.png|thumb|right|300px|This image shows the quaternary structure of DAHP synthase, with the secondary and tertiary structures illu ...16 KB (2,060 words) - 23:26, 11 February 2025
- ...s of Barbados|doi=10.1016/0033-5894(88)90030-0|volume=29|issue = 3|journal=Quaternary Research|pages=197–215|bibcode=1988QuRes..29..197R|last1 = Radtke|first1 = ...tps://www.sciencedirect.com/science/article/pii/S1871101422000802 |journal=Quaternary Geochronology |language=en |volume=71 |pages=101332 |doi=10.1016/j.quageo.2 ...13 KB (1,858 words) - 22:01, 30 December 2024
- ...Alonso MR, Ortiz JE and T de Torres. 2008. Testing limiting similarity in Quaternary terrestrial gastropods. Paleobiology 34(3): 378–388.</ref> Other theoretica ...10 KB (1,435 words) - 17:15, 1 June 2024
- A [[quaternary relation]] ''{{Not a typo|S(a, b, c, d)}}'' is defined satisfying certain a ...5 KB (719 words) - 03:00, 2 March 2025
- Its [[binary representation]] 10001010001 and its [[quaternary numeral system|base-4 representation]] 101101 are both [[Palindromic number ...5 KB (663 words) - 14:09, 1 January 2025
- ...first5=B.|date=2016a|title=Multi-OSL-thermochronometry of feldspar|journal=Quaternary Geochronology|volume=33|pages=76–87|doi=10.1016/j.quageo.2016.01.004|issn=1 ...ty in bedrock feldspars and implications for OSL thermochronometry|journal=Quaternary Geochronology|volume=36|pages=55–66|doi=10.1016/j.quageo.2016.08.004|issn=1 ...30 KB (4,543 words) - 21:38, 26 February 2025
- ...e]]s to quench the [[fluorescence]] of heterocyclic organic compounds with quaternary [[nitrogen]].<ref>{{ ...6 KB (820 words) - 11:04, 11 December 2023
- ...Bruijn sequence can be formed by reinterpreting binary representations as quaternary.{{r|mdb}} ...7 KB (913 words) - 19:15, 23 August 2024
- ...diocarbon Dating: Some Problems and Potential Developments", in Mahaney, ''Quaternary Dating Methods'', p. 5.</ref> ....valdosta.edu/~dmthieme/Geomorph/Walker_2005_QuaternaryDatingMethods.pdf ''Quaternary Dating Methods''], John Wiley & Sons, Ltd. 2005, page 23.</ref><ref>{{cite ...23 KB (3,637 words) - 10:36, 28 December 2024
- ..., apart from one place, is mapped to the element at that place. E.g., in a quaternary group with identity ''e'', ''eeae'' = ''a'' for every ''a''. ...8 KB (1,201 words) - 01:55, 6 July 2024
- ...e Mannich base is then subjected to methylation or N-oxidation to give a [[Quaternary ammonium cation|trimethylammonium salt]] or [[Amine oxide|amine ''N''-oxide ...8 KB (1,071 words) - 08:05, 13 April 2024