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

Pore Transport and Ion-Pair Transport01:17

Pore Transport and Ion-Pair Transport

1.3K
Pore transport and ion-pair formation are critical mechanisms for the absorption and distribution of drugs in the body.
Pore transport, also known as convective transport, is a process where small molecules like urea, water, and sugars rapidly cross cell membranes as though there were channels or pores in the membrane. Although direct microscopic evidence is limited  but the concept of pores or channels is widely accepted based on physiological evidence. Despite the lack of direct...
1.3K
Facilitated Transport01:19

Facilitated Transport

151.8K
The chemical and physical properties of plasma membranes cause them to be selectively permeable. Since plasma membranes have both hydrophobic and hydrophilic regions, substances need to be able to transverse both regions. The hydrophobic area of membranes repels substances such as charged ions. Therefore, such substances need special membrane proteins to cross a membrane successfully. In  facilitated transport, also known as facilitated diffusion, molecules and ions travel across a...
151.8K
Primary Active Transport01:47

Primary Active Transport

201.0K
In contrast to passive transport, active transport involves a substance being moved through membranes in a direction against its concentration or electrochemical gradient. There are two types of active transport: primary active transport and secondary active transport. Primary active transport utilizes chemical energy from ATP to drive protein pumps that are embedded in the cell membrane. With energy from ATP, the pumps transport ions against their electrochemical gradients—a direction...
201.0K
Secondary Active Transport01:55

Secondary Active Transport

138.3K
One example of how cells use the energy contained in electrochemical gradients is demonstrated by glucose transport into cells. The ion vital to this process is sodium (Na+), which is typically present in higher concentrations extracellularly than in the cytosol. Such a concentration difference is due, in part, to the action of an enzyme “pump” embedded in the cellular membrane that actively expels Na+ from a cell. Importantly, as this pump contributes to the high concentration of...
138.3K
Short-distance Transport of Resources02:12

Short-distance Transport of Resources

17.8K
Short-distance transport refers to transport that occurs over a distance of just 2-3 cells, crossing the plasma membrane in the process. Small uncharged molecules, such as oxygen, carbon dioxide, and water, can diffuse across the plasma membrane on their own. In contrast, ions and larger molecules require the assistance of transport proteins due to their charge or size. Transport across membranes also occurs within individual cells, playing a variety of essential roles for the plant as a whole.
17.8K
Protein-protein Interfaces02:04

Protein-protein Interfaces

14.8K
Many proteins form complexes to carry out their functions, making protein-protein interactions (PPIs) essential for an organism's survival. Most PPIs are stabilized by numerous weak noncovalent chemical forces. The physical shape of the interfaces determines the way two proteins interact. Many globular proteins have closely-matching shapes on their surfaces, which form a large number of weak bonds. Additionally, many PPIs occur between two helices or between a surface cleft and a...
14.8K

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

Engineering Plasma-Liquid Microdischarge Systems for Direct N<sub>2</sub>‑to-NH<sub>3</sub> Conversion at Ambient Conditions.

ACS sustainable chemistry & engineering·2026
Same author

The active role of nanocarbons in electrocatalysis: recent advances in CO<sub>2</sub> conversion.

Frontiers in chemistry·2026
Same author

Electrochemical Transformation of Copper Sulfide Electrodes for Selective CO<sub>2</sub>-to-Formate Conversion.

ChemSusChem·2025
Same author

Correction: High photocatalytic yield in the non-oxidative coupling of methane using a Pd-TiO<sub>2</sub> nanomembrane gas flow-through reactor.

EES catalysis·2024
Same author

Correction to "Interfacial Chemistry in the Electrocatalytic Hydrogenation of CO<sub>2</sub> over C-Supported Cu-Based Systems".

ACS catalysis·2024
Same author

High photocatalytic yield in the non-oxidative coupling of methane using a Pd-TiO<sub>2</sub> nanomembrane gas flow-through reactor.

EES catalysis·2024

相关实验视频

Updated: Feb 14, 2026

Imaging Corrosion at the Metal-Paint Interface Using Time-of-Flight Secondary Ion Mass Spectrometry
07:24

Imaging Corrosion at the Metal-Paint Interface Using Time-of-Flight Secondary Ion Mass Spectrometry

Published on: May 6, 2019

8.7K

层级接口可以快速运输离子.

Claudio Ampelli1

  • 1Department of Chemical, Biological, Pharmaceutical and Environmental Sciences (ChiBioFarAm), University of Messina, Messina, Italy.

Science (New York, N.Y.)
|February 12, 2026
PubMed
概括

一个新的层次固体电解质介面相,使得在工业条件下能够高效地生产氨. 这一突破推动了各种应用的可持续氨合成.

科学领域:

  • 电化学 电化学 电化学
  • 材料科学 材料科学 材料科学
  • 化学工程是化学工程的重要组成部分.

背景情况:

  • 氨合成对全球农业和工业至关重要.
  • 目前的氨生产方法,如哈伯 - 博什工艺,是能源密集型的,依赖于化石燃料.
  • 开发可持续和高效的氨合成路径是一个关键的挑战.

研究的目的:

  • 调查用于生产氨的等级固体电解质介面相的潜力.
  • 为了评估在工业运行条件下这个相间阶段的性能.
  • 探索氨合成的更绿色替代方案.

主要方法:

  • 一个层次的固体电解质相间结构的制造.
  • 对氨合成的介相进行电化学测试.
  • 对氨产量和法拉第效率的分析.
  • 在模拟的工业运行条件下进行评估.

主要成果:

  • 层次的固体电解质介面阶段显示出显著的氨生产能力.
  • 在工业相关条件下观察到高产量和效率.
  • 阶段间结构被证明是稳定的,有效的持续运行.

更多相关视频

Ohmic Contact Fabrication Using a Focused-ion Beam Technique and Electrical Characterization for Layer Semiconductor Nanostructures
08:12

Ohmic Contact Fabrication Using a Focused-ion Beam Technique and Electrical Characterization for Layer Semiconductor Nanostructures

Published on: December 5, 2015

12.8K
Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis
14:11

Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis

Published on: March 29, 2016

27.6K

相关实验视频

Last Updated: Feb 14, 2026

Imaging Corrosion at the Metal-Paint Interface Using Time-of-Flight Secondary Ion Mass Spectrometry
07:24

Imaging Corrosion at the Metal-Paint Interface Using Time-of-Flight Secondary Ion Mass Spectrometry

Published on: May 6, 2019

8.7K
Ohmic Contact Fabrication Using a Focused-ion Beam Technique and Electrical Characterization for Layer Semiconductor Nanostructures
08:12

Ohmic Contact Fabrication Using a Focused-ion Beam Technique and Electrical Characterization for Layer Semiconductor Nanostructures

Published on: December 5, 2015

12.8K
Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis
14:11

Quantification of Hydrogen Concentrations in Surface and Interface Layers and Bulk Materials through Depth Profiling with Nuclear Reaction Analysis

Published on: March 29, 2016

27.6K

结论:

  • 一个分层的固体电解质介相是有效生产氨的可行和有前途的方法.
  • 这项技术为实现可持续和可扩展的氨合成提供了潜在的途径.
  • 进一步的研究可以优化相间设计以提高性能.