相关实验视频
Updated: Feb 7, 2026
12:08
Diagonal Method to Measure Synergy Among Any Number of Drugs
Published on: June 21, 2018
19.5K
政策协同作用和中国战略矿产政策的主题演变
Xiaolei Sun1,2, Yingjie Sheng1,2, Guoqiang Li3
1Institutes of Science and Development, Chinese Academy of Sciences, Beijing 100190, China.
Fundamental research
|February 6, 2026
概括
中国中国中国中国.
科学领域:
- 地质科学和环境科学 地球科学和环境科学
- 政策研究 政策研究
- 能源经济学 能源经济学
背景情况:
- 全球能源转型需要专注于战略性关键矿物质.
- 了解政策演变是有效资源管理的关键.
- 中国在关键矿产中的作用使其政策格局显著.
研究的目的:
- 分析中国战略关键矿产政策体系的演变.
- 确定关键的政策主题和协同效应网络.
- 为优化未来政策制定提供洞察力.
主要方法:
- 分析了2011-2023年984份中国政策文本.
- 应用"政策主题-政策协同作用"框架.
- 审查政策重点和部门间合作.
主要成果:
- 中国的关键矿产政策优先考虑技术和企业,增加绿色倡议.
- 焦点领域包括煤炭,石油,天然气和稀土,对能源过渡矿物质的重视较小.
- 一个更紧密的政策协同网络存在,但自然资源部缺乏中央协调作用.
结论:
- 中国的战略性关键矿产政策显示出向绿色倡议和加强机构间合作的趋势.
- 加强自然资源部的协同作用对于有效实施政策至关重要.
- 这些发现为中国优化战略矿产政策提供了参考.
相关概念视频
02:55The Evidence for Evolution
48.3K
Genetic variations accumulating within populations over generations give rise to biological evolution. Evolutionary changes can result in the formation of novel varieties and entire new species. These changes are responsible for the diverse forms of life inhabiting the planet. The evidence for evolution suggests that all living organisms descended from common ancestors.
48.3K
01:54Convergent Evolution
33.0K
Evolution shapes the features of organisms over time, ensuring that they are suited for the environments in which they live. Sometimes, selection pressure leads to the rise of similar but unrelated adaptations in organisms with no recent common ancestors, a process known as convergent evolution.
33.0K
01:30Thematic Layering in GIS
356
In the past, planning projects such as schools or public facilities required extensive manual effort to gather and compile data. Information such as property boundaries, soil characteristics, road networks, zoning regulations, and flood zones had to be sourced individually from courthouses, utility providers, and registry offices. Assembling these datasets into a coherent format often took several months, delaying project timelines.The introduction of Geographic Information Systems (GIS)...
356
02:34Water and Mineral Acquisition
35.8K
Specialized tissues in plant roots have evolved to capture water, minerals, and some ions from the soil. Roots exhibit a variety of branching patterns that facilitate this process. The outermost root cells have specialized structures called root hairs that increase the root surface, thus increasing soil contact. Water can passively cross into roots, as the concentration of water in the soil is higher than that of the root tissue. Minerals, in contrast, are actively transported into root cells.
35.8K
01:12Strategies of Self-Presentation I: Strategic Self-Presentation
223
Strategic self-presentation refers to individuals' intentional efforts to influence how others perceive them. This process is employed in various social and professional settings, such as job interviews, dating, politics, and legal contexts, where individuals seek to shape impressions to gain social or material advantages. While people generally present themselves in ways that align with their authentic characteristics, external factors, such as cognitive load, can hinder their ability to...
223
01:26Minerals
1.3K
Minerals are essential nutrients that the human body needs in small amounts to work properly. They play a vital role in many bodily functions, such as building strong bones and transmitting nerve impulses. Some minerals are needed for hormone production or to maintain a normal heartbeat. Major minerals include calcium, phosphorus, potassium, sulfur, sodium, chlorine, and magnesium, while trace minerals include iron, manganese, copper, iodine, zinc, cobalt, fluoride, and selenium.
Major...
Major...
1.3K