安裝中文字典英文字典辭典工具!
安裝中文字典英文字典辭典工具!
|
- Quaternary Period - an overview | ScienceDirect Topics
The Quaternary period, 2 58 Ma to present, is characterized by multiple expansions and reductions in polar ice sheets A key driver of Quaternary ice ages is the quasi-periodic change in the Earth's orbit on 22, 41, and 100 thousand-year timescales Because the shifts in solar energy distribution across the Earth's surface are too weak to
- 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
- Encyclopedia of Quaternary Science - ScienceDirect
Quaternary terrestrial sediments contain the fossil remains of existing species of flora and fauna, and their immediate predecessors Quaternary science plays an integral part in such important issues for modern society as groundwater resources and contamination, sea level change, geologic hazards (earthquakes, volcanic eruptions, tsunamis
- Quaternary Environments and Humans | Journal - ScienceDirect
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 … View full aims scope
- Quaternary Science Reviews | Journal - ScienceDirect
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 A companion title to the respected Quaternary … View full aims scope
- Quaternary - an overview | ScienceDirect Topics
The Quaternary refers to a past period, approximately 2 59 million years ago to the present, which is extensively studied for understanding biodiversity dynamics and the impact of climate change on species It is characterized by significant climatic shifts and species' responses in terms of geographical range and community composition
- Challenges of quaternary ammonium antimicrobial agents: Mechanisms . . .
Antimicrobials are widely used in daily life, including disinfection and antisepsis Quaternary ammonium compounds (QACs), recognized for their high efficacy and broad-spectrum antimicrobial activities, are most common ones recommended in clinical and environmental applications, such as benzalkonium chloride (BAC), cetylpyridinium chloride (CPC), dimethylaminododecyl methacrylate (DMADDM) and
- Defining the Quaternary - ScienceDirect
It may be possible to “save” the Quaternary by defining it as a Subsystem of the Neogene In doing so, it would be an opportune time to extend the base of the Quaternary to 2 6 Ma to encompass the time during which (1) Earth's climate has been strongly influenced by bi-polar glaciation, and (2) the genus Homo first appeared and evolved
|
|
|