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 the auspices of the leading Quaternary association, with a special focus on recent advances in Quaternary sciences that appeal to a wide audience and that combine approaches from several disciplines
Quaternary Period - an overview | ScienceDirect Topics Quaternary Period In subject area: Earth and Planetary Sciences 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 and the evolution of modern flora and fauna, including Homo sapiens
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 papers dealing with all aspects of Quaternary science
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 (INQUA) and aims to publish high-quality and impactful articles covering significant advances across all disciplines related to Quaternary
The Quaternary ice ages - ScienceDirect The Quaternary begins 2 58 ka ago and is divided into Pleistocene (2 58–11 7 ka) and Holocene (11 7 ka to present) (Gibbard and Cohen, 2008) The most peculiar feature of the Quaternary ice ages was that great ice sheets spread se-veral or seve-ral times over the north of North America and Eurasia (Figure 2 1, Figure 2 3)
Highly positively charged nanofiltration membrane through bis . . . The quaternary ammonium group provides permanent positive charge, which is an ideal candidate for constructing the high PCD of membrane surface [[33], [34], [35], [36], [37], [38]] Therefore, the rational design of modifiers that can further increase the membrane surface PCD is in urgent need
Quaternary Glaciations and Chronology - ScienceDirect The onset of the recent ice age dates back much further than the Quaternary An overall, long-term trend of cooling global climates occurred throughout the Tertiary Period The opening of the North Atlantic Ocean, accompanied by the simultaneous closure of the east–west-aligned Tethys Ocean, characterize this period This development led to profound palaeogeographical rearrangements and
Antibacterial quaternary ammonium agents: Chemical diversity and . . . 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) In the last decades, quaternary ammonium compounds (QACs) have received significant attention due to their broad application in pharmaceutical chemistry [2]