相关实验视频
Updated: Jun 19, 2026

05:07
Assessing the Particulate Matter Removal Abilities of Tree Leaves
Published on: October 7, 2018
6.8K
新能源示范城市政策是否能制空气污染? 来自中国城市的证据
1School of Public Affairs, University of Science and Technology of China, Hefei, Anhui province 230026, PR China.
The Science of the total environment
|February 4, 2024
概括
中国的新能源示范城市 (NEDC) 政策显著减少了SO2排放量0.13个单位. 这一绿色倡议促进了投资和创新,改善了各地区的空气质量.
科学领域:
- 环境科学 环境科学
- 能源政策 能源政策
- 经济学 经济学 经济学
背景情况:
- 中国正在使用各种政策工具向绿色能源结构过渡.
- 2014年启动的新能源示范城市 (NEDC) 政策旨在促进这一转型.
- 对于NEDC政策对减轻空气污染的影响,需要进行彻底的调查.
研究的目的:
- 实证地评估NEDC政策对减轻空气污染的影响.
- 探索NEDC政策影响污染水平的机制.
- 为了确定NEDC政策的异质效应和空间溢出效应.
主要方法:
- 使用的差异差异 (DID) 策略.
- 采用中国县级城市数据进行分析.
- 研究的相互作用效应和异质影响.
主要成果:
- 根据NEDC的政策,SO2排放量大幅减少0.13个单位.
- 这些机制包括刺激绿色投资,促进绿色技术创新,提高资源配置效率和减少能源消耗.
- 政策效应异质,受官方年龄和环境法规的影响,对邻近地区产生积极的空间溢出效应.
结论:
- 新能源发电标准政策是中国缓解空气污染的有效工具.
- 官方的年龄和现有的环境法规限制了政策的有效性.
- 区域合作和技术传播对于最大限度地发挥政策效益至关重要.
更多相关视频
14:55Evaluating the Effect of Roadside Parking on a Dual-Direction Urban Street
Published on: January 20, 2023
3.3K
09:33Visualizing Field Data Collection Procedures of Exposure and Biomarker Assessments for the Household Air Pollution Intervention Network Trial in India
Published on: December 23, 2022
2.2K
相关概念视频
meta-Directing Deactivators: –NO2, –CN, –CHO, –⁠CO2R, –COR, –CO2H
All meta-directing substituents are deactivating groups. These substituents withdraw electrons from the aromatic ring, making the ring less reactive toward electrophilic substitution. For example, the nitration of nitrobenzene is 100,000 times slower than that of benzene because of the deactivating effect of the nitro group. The first step in an electrophilic aromatic substitution is the addition of an electrophile to form a resonance-stabilized carbocation. The energy diagrams for the...
Energy Conservation and Bernoulli's Equation
Applying the conservation of energy principle or the work-energy theorem to an incompressible, inviscid fluid in laminar, steady, irrotational flow leads to Bernoulli's equation. It states that the sum of the fluid pressure, potential, and kinetic energy per unit volume is constant along a streamline.
All the terms in the equation have the dimension of energy per unit volume. The kinetic energy per unit volume is called the kinetic energy density, and the potential energy per unit volume is...
All the terms in the equation have the dimension of energy per unit volume. The kinetic energy per unit volume is called the kinetic energy density, and the potential energy per unit volume is...