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

Preparation of Alcohols via Substitution Reactions01:38

Preparation of Alcohols via Substitution Reactions

6.5K
Overview
Alcohols can be synthesized from alkyl halides via nucleophilic substitution reactions. The highly polar carbon-halogen bond in the substrate makes halide a good leaving group. The hydroxide ion or water can act as a nucleophile to take the place of halide and form an alcohol. The substitution reactions occur via two different reaction pathways, SN1 or SN2, depending on the nature of carbon attached to the halide.
Primary alcohols are synthesized from primary alkyl halides, and the...
6.5K
Preparation of Alcohols via Addition Reactions02:15

Preparation of Alcohols via Addition Reactions

5.7K
Overview
The acid-catalyzed addition of water to the double bond of alkenes is a large-scale industrial method used to synthesize low-molecular-weight alcohols. An acidic atmosphere is required to allow the hydrogen in the water molecule to act as an electrophile and attack the double bond in an alkene. The addition of a proton to the double bond creates a carbocation intermediate. The proton preferentially bonds to the less substituted end of the double bond to create a more stable carbocation...
5.7K
Alcohols from Carbonyl Compounds: Reduction02:23

Alcohols from Carbonyl Compounds: Reduction

9.4K
Reduction is a simple strategy to convert a carbonyl group to a hydroxyl group. The three major pathways to reduce carbonyls to alcohols are catalytic hydrogenation, hydride reduction, and borane reduction.
Catalytic hydrogenation is similar to the reduction of an alkene or alkyne by adding H2 across the pi bond in the presence of transition metal catalysts like Raney Ni, Pd–C, Pt, or Ru. Aldehydes and ketones can be reduced by this method, often under mild to moderate heat...
9.4K
CNS Depressants: Alcohol and Nicotine01:27

CNS Depressants: Alcohol and Nicotine

1.7K
Ethanol, a clear colorless alcohol, has been consumed by humans for millennia, but its effects on the body are far from benign. At lower doses, it induces decreased inhibitions and loquaciousness, leading to its social appeal. However, it can cause severe consequences at higher doses, such as coma and respiratory depression, due to its zero-order elimination kinetics. Chronic ethanol abuse wreaks havoc on multiple organ systems, particularly the CNS and the liver. Abrupt cessation of ethanol...
1.7K
A Single-Component System01:24

A Single-Component System

69
In the field of chemistry, the terms "component" and "phase" hold significant importance. A component refers to a chemically distinct substance in a system that has specific properties. It is chemically homogeneous, meaning it has the same properties throughout. For example, in a mixture of salt and water, both salt and water are considered separate components because they have different chemical properties.On the other hand, a phase is a form of matter that has a consistent chemical...
69
Microbes in Beverage Production01:25

Microbes in Beverage Production

298
Alcoholic beverages such as wine, beer, and spirits are the products of microbial fermentation processes that transform simple sugars into ethanol and a wide array of complex flavor compounds. These transformations rely on the metabolic activities of specific yeasts and bacteria, which are selected and controlled to yield the desired beverage characteristics.Wine Fermentation and MaturationWine production begins with the crushing of grapes to release juice and pulp, forming a must that is...
298

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

A Growing Problem: Increases in Child-Appealing Marketing on Infant and Young Children's Foods in Australia (2015 vs 2024).

Maternal & child nutrition·2026
Same author

Breathe Easy Gippsland-Community Attitudes Towards Expanding Smoke- and Vape-Free Zones in Gippsland, Victoria, Australia.

Health promotion journal of Australia : official journal of Australian Association of Health Promotion Professionals·2026
Same author

Implementation of smoking cessation interventions in real-world lung cancer screening: a RE-AIM-guided scoping review.

Journal of the National Cancer Institute·2026
Same author

A Typology of Strategies Women Use to Navigate Alcohol Abstinence During Pregnancy.

Maternal and child health journal·2026
Same author

'It's a healthy choice': a qualitative study of Australian consumers' awareness and interpretation of nutrition-related claims on alcohol products.

Public health nutrition·2026
Same author

Developing and Applying a Typology of 'Better for You' Claims on Alcohol Products.

Drug and alcohol review·2026

相关实验视频

Updated: May 5, 2026

Disruption of Frontal Lobe Neural Synchrony During Cognitive Control by Alcohol Intoxication
09:26

Disruption of Frontal Lobe Neural Synchrony During Cognitive Control by Alcohol Intoxication

Published on: February 6, 2019

17.3K

"零酒精饮料真的很复杂":导航替代和添加消费问题

Simone Pettigrew1, Bella Sträuli1,2, Asad Yusoff1

  • 1The George Institute for Global Health, UNSW Sydney, Sydney, Australia.

Drug and alcohol review
|March 3, 2026
PubMed
概括

零酒精产品 (ZAP) 既有好处又有风险,消费者发现它们对社交有用,但太昂贵了. 人们对ZAP存在担忧,认为ZAP是儿童获得类似酒精品味的途径.

关键词:
广告广告广告广告广告广告广告广告广告可用性的可用性.减少伤害 减少伤害零售零售零售零售零售零售零售零售零售零售没有酒精,没有酒精.

更多相关视频

Chronic Intermittent Ethanol Vapor Exposure Paired with Two-Bottle Choice to Model Alcohol Use Disorder
05:12

Chronic Intermittent Ethanol Vapor Exposure Paired with Two-Bottle Choice to Model Alcohol Use Disorder

Published on: June 23, 2023

1.9K
Modeling Alcohol Consumption in Rodents Using Two-Bottle Choice Home Cage Drinking and Microstructural Analysis
08:45

Modeling Alcohol Consumption in Rodents Using Two-Bottle Choice Home Cage Drinking and Microstructural Analysis

Published on: November 8, 2024

1.5K

相关实验视频

Last Updated: May 5, 2026

Disruption of Frontal Lobe Neural Synchrony During Cognitive Control by Alcohol Intoxication
09:26

Disruption of Frontal Lobe Neural Synchrony During Cognitive Control by Alcohol Intoxication

Published on: February 6, 2019

17.3K
Chronic Intermittent Ethanol Vapor Exposure Paired with Two-Bottle Choice to Model Alcohol Use Disorder
05:12

Chronic Intermittent Ethanol Vapor Exposure Paired with Two-Bottle Choice to Model Alcohol Use Disorder

Published on: June 23, 2023

1.9K
Modeling Alcohol Consumption in Rodents Using Two-Bottle Choice Home Cage Drinking and Microstructural Analysis
08:45

Modeling Alcohol Consumption in Rodents Using Two-Bottle Choice Home Cage Drinking and Microstructural Analysis

Published on: November 8, 2024

1.5K

科学领域:

  • 公共卫生 公共卫生
  • 消费者行为 消费者行为
  • 酒精政策 酒精政策

背景情况:

  • 扩大的零酒精产品 (ZAP) 市场构成了复杂的公共卫生挑战,有可能对整体酒精消费产生积极的替代和负面的补充影响.
  • ZAP的净收益仍然未确定,需要对消费者看法进行研究,并将其与公共卫生政策建议保持一致.

研究的目的:

  • 确定影响ZAPs替代和添加消费的因素.
  • 探索与世界卫生组织政策建议相关的消费者对ZAP的看法.
  • 与其他非酒精饮料相比,评估ZAP的感知效用和味道.

主要方法:

  • 在澳大利亚三个州进行了9个在线焦点小组,与83名成年酒精消费者 (每月至少消费两次) 进行了交流.
  • 利用定性数据分析来探索消费者对ZAP的看法和态度.

主要成果:

  • 消费者同意ZAP是昂贵的,但对于酒精预期的社交场合是有用的.
  • 关于ZAP与其他非酒精选择的味道和比较实用性存在重大分歧.
  • 人们担心ZAP可能会成为儿童对类似酒精产品的介绍.

结论:

  • 消费者对ZAP的看法反映了替代和补充效应的双重性质,这给政策带来了挑战.
  • 虽然缺乏人口层面的证据,但社区可能会支持旨在减轻ZAP对儿童的潜在危害的政策.
  • 需要进一步的研究,以确定日益增长的ZAP市场对公共卫生的影响.