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  1. Quaternary Period - an overview | ScienceDirect Topics

    The Quaternary Period is defined as the most recent geologic era spanning the last 2.6 million years, divided into the Pleistocene and Holocene epochs, characterized by significant climatic oscillations …

  2. The Quaternary Period - ScienceDirect

    The Quaternary System/Period, comprising the Holocene and Pleistocene series/epochs, encompasses the last ~2.6 Myr during which time Earth’s climate was strongly influenced by bipolar glaciation, and …

  3. Quaternary Science Reviews | Journal | ScienceDirect.com by Elsevier

    Quaternary Science Advances (QSA) is an international and fully Open Access journal supporting the rapid publication of peer-reviewed original research articles, short communications and review …

  4. Quaternary International | Journal | ScienceDirect.com by Elsevier

    Quaternary International is an international, peer-reviewed journal that embraces all aspects related to Quaternary Science. It is the official journal of the International Union for Quaternary Research …

  5. Quaternary - an overview | ScienceDirect Topics

    Quaternary During the past 2 million years, climatic fluctuations of dry glacial and wet interglacial periods affected the geographic ranges of both temperate and tropical areas. Palynological sequences …

  6. Antibacterial quaternary ammonium agents: Chemical diversity and ...

    Dec 5, 2022 · Quaternary ammonium agents, a class of organic cationic salts of substituted ammonium compounds [1], exist widely in nature, such as acetylcholine 1, betaine 2, and levocarnitine 3 (Fig. 1). …

  7. Quaternary Environments and Humans | Journal - ScienceDirect

    Quaternary Environments and Humans (QEH) is the full Open Access, official journal of the International Union for Quaternary Research (INQUA). The journal aims to publish peer reviewed papers under …

  8. Quaternary Science Reviews | Vol 374, 15 February 2026 - ScienceDirect

    Read the latest articles of Quaternary Science Reviews at ScienceDirect.com, Elsevier’s leading platform of peer-reviewed scholarly literature

  9. Protein Quaternary Structure - an overview | ScienceDirect Topics

    Quaternary Structure A complex composed of multiple protein chains (subunits) is defined as a quaternary structure, also called a multimer, or biological assembly. Many proteins form their …

  10. Quaternary dating and instrumental development: An overview

    Jun 1, 2022 · The Quaternary Period is the most recent and shortest geological period that started around 2.58 Myr ago and is characterized by significant climate instabilities. The deep-sea sediment …