Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Aromatic Compounds: Overview01:25

Aromatic Compounds: Overview

15.0K
In general, the term ‘aromatic’ indicates a pleasant smell or fragrance from fresh flowers, freshly prepared coffee, etc. In the early history of organic chemistry, many benzene derivatives were isolated from the pleasant odor oils of the plants. For example, vanillin was isolated from the oil of vanilla, methyl salicylate from the oil of wintergreen, and cinnamaldehyde from the oil of cinnamon. They all had a pleasant odor; hence the name aromatic was given.
In 1825, Faraday isolated...
15.0K
Structure of Benzene: Kekulé Model01:07

Structure of Benzene: Kekulé Model

12.6K
In 1865, August Kekule suggested the structure of benzene according to the structural theory of organic chemistry based on the three assertions—formula of benzene is C6H6, all the hydrogens of benzene are equivalent, and each carbon must have four bonds due to its tetravalency.
He proposed that benzene has a cyclic structure of six carbon atoms attached to one hydrogen atom each, with three alternating pi bonds.
12.6K
Benzene to 1,4-Cyclohexadiene: Birch Reduction Mechanism01:18

Benzene to 1,4-Cyclohexadiene: Birch Reduction Mechanism

2.7K
Birch reduction uses solvated electrons as reducing agents. The reaction converts benzene to 1,4-cyclohexadiene. The reaction proceeds by the transfer of a single electron to the ring to form a benzene radical anion. This anion is highly basic—it abstracts a proton from the alcohol to form a cyclohexadienyl radical. Another single electron transfer gives the cyclohexadienyl anion. A proton transfer from the alcohol forms 1,4-cyclohexadiene. Since this reduction occurs via radical anion...
2.7K
NMR Spectroscopy of Benzene Derivatives01:37

NMR Spectroscopy of Benzene Derivatives

11.6K
Simple unsubstituted benzene has six aromatic protons, all chemically equivalent. Therefore, benzene exhibits only a singlet peak at δ 7.3 ppm in the 1H NMR spectrum. The observed shift is far downfield because the aromatic ring current strongly deshields the protons. Any substitution on the benzene ring makes the aromatic protons nonequivalent, and the protons split each other. The peak is, therefore, no longer a singlet and the splitting pattern and their associated coupling...
11.6K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Evaluating and Refining PCB Mixture Indicators in Marine Fish Through Explainable Artificial Intelligence.

Toxics·2026
Same author

The Role of Antioxidants in the Management of Polycystic Ovary Syndrome.

Antioxidants (Basel, Switzerland)·2026
Same author

Comparative Evaluation of Machine Learning Models for Residential PM<sub>1</sub> Prediction in Zagreb (Croatia): Identifying Key Predictors and Indoor/Outdoor Dynamics.

Toxics·2026
Same author

Linking Atmospheric and Soil Contamination: A Comparative Study of PAHs and Metals in PM<sub>10</sub> and Surface Soil near Urban Monitoring Stations.

Toxics·2025
Same author

Application of the AI-Based Framework for Analyzing the Dynamics of Persistent Organic Pollutants (POPs) in Human Breast Milk.

Toxics·2025
Same author

Impact of indoor air pollution on DNA damage and chromosome stability: a systematic review.

Archives of toxicology·2024

相关实验视频

Updated: May 6, 2026

Characterization, Quantification and Compound-specific Isotopic Analysis of Pyrogenic Carbon Using Benzene Polycarboxylic Acids BPCA
08:12

Characterization, Quantification and Compound-specific Isotopic Analysis of Pyrogenic Carbon Using Benzene Polycarboxylic Acids BPCA

Published on: May 16, 2016

17.3K

使用可解释,设置意识的人工智能方法揭示二污染模式.

Ivan Bešlić1, Timea Bezdan2, Gordana Jovanović3

  • 1Institute for Medical Research and Occupational Health, Ksaverska cesta 2, P.O. Box 291, 10001 Zagreb, Croatia.

Toxics
|February 26, 2026
PubMed
概括
此摘要是机器生成的。

这项研究使用人工智能来识别影响城市水平的独特环境设置. 一些关键设置解释了最极端的污染,有助于空气质量管理.

关键词:
空气污染 空气污染可解释的人工智能气体污染物的气体污染物机器学习是机器学习.这是一种超听证学 (metaheuristics).

更多相关视频

Measuring the Structure, Composition, and Change of Underwater Environments with Large-area Imaging
09:19

Measuring the Structure, Composition, and Change of Underwater Environments with Large-area Imaging

Published on: April 18, 2025

1.5K

相关实验视频

Last Updated: May 6, 2026

Characterization, Quantification and Compound-specific Isotopic Analysis of Pyrogenic Carbon Using Benzene Polycarboxylic Acids BPCA
08:12

Characterization, Quantification and Compound-specific Isotopic Analysis of Pyrogenic Carbon Using Benzene Polycarboxylic Acids BPCA

Published on: May 16, 2016

17.3K
Measuring the Structure, Composition, and Change of Underwater Environments with Large-area Imaging
09:19

Measuring the Structure, Composition, and Change of Underwater Environments with Large-area Imaging

Published on: April 18, 2025

1.5K

科学领域:

  • 环境科学 环境科学
  • 大气化学 大气化学
  • 人工智能的人工智能

背景情况:

  • 城市空气质量监测对公共卫生至关重要.
  • 二烯的变性受复杂的气象和排放因素的影响.
  • 可解释的人工智能为了解污染动态提供了新的方法.

研究的目的:

  • 开发和应用一个可解释的AI框架来分析城市变性.
  • 为了确定控制二烯度的独特环境设置.
  • 为空气质量评估和政策支持提供可转移的模型.

主要方法:

  • 在克罗地亚萨格勒布的每小时污染物度 (,NO2,SO2,CO,O3) 和气象变量的七年数据集的分析.
  • 开发通过元启发算法 (Sine Cosine Algorithm) 优化的多组合决策树模型.
  • 应用沙普利增量解释 (SHAP),PaCMAP嵌入和HDBSCAN集群来识别环境设置.

主要成果:

  • 优化的额外树木模型实现了0.87.8的R平方.
  • 确定了七个不同的环境设置 (C0-C6) 和一个残留组,以表征污染制度.
  • 对于极端的两个设置 (C6和C4) 占主导地位,与冬季停滞和异常稳定有关.
  • 低含量设置 (C0,C1,C3) 与更好的大气混合和氧化相关.

结论:

  • 有限数量的环境环境有效地解释了极端的城市污染.
  • 开发的AI框架是可解释的,可转移的,并支持空气质量政策.
  • 了解这些环境是有针对性的污染控制战略的关键.