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

Precipitate Formation and Particle Size Control01:16

Precipitate Formation and Particle Size Control

5.3K
In precipitation gravimetry, the precipitating agent should react specifically or selectively with the analyte. While a specific reagent reacts with the analyte alone, a selective reagent can react with a limited number of chemical species.
The obtained precipitate should be either a pure substance of known composition or easily converted to one by a simple process, such as ignition or drying. In addition, the precipitate should be insoluble and easily filterable. In general, filterability...
5.3K
Plane Potential Flows01:23

Plane Potential Flows

866
Plane potential flows simplify fluid motion by assuming the fluid to be irrotational and incompressible. These characteristics allow these flows to be described by a velocity potential function, ϕ, representing the flow speed in a given direction, and a stream function, ψ, that visualizes the flow path, both governed by Laplace's equation. These parameters help in estimating flow patterns, velocity distributions, and pressure fields around various hydraulic structures.
Uniform...
866
Accelerating Fluids01:17

Accelerating Fluids

2.1K
When a fluid is in constant acceleration, the pressure and buoyant force equations are modified. Suppose a beaker is placed in an elevator accelerating upward with a constant acceleration, a. In the beaker, assume there is a thin cylinder of height h with an infinitesimal cross-sectional area, ΔS.
The motion of the liquid within this infinitesimal cylinder is considered to obtain the pressure difference. Three vertical forces act on this liquid:
2.1K

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

Effect of variable solubility on reactive convective dissolution.

Physical chemistry chemical physics : PCCP·2025
Same author

Scaling properties of A + B → C reaction-diffusion fronts in finite rectilinear geometries.

Chaos (Woodbury, N.Y.)·2025
Same author

Flow-driven pattern formation during coacervation of xanthan gum with a cationic surfactant.

Physical chemistry chemical physics : PCCP·2024
Same author

Structural and hydrodynamic controls on fluid travel time distributions across fracture networks.

Proceedings of the National Academy of Sciences of the United States of America·2024
Same author

Fluid flow drives phenotypic heterogeneity in bacterial growth and adhesion on surfaces.

Nature communications·2024
Same author

Unraveling dispersion and buoyancy dynamics around radial A + B → C reaction fronts: microgravity experiments and numerical simulations.

NPJ microgravity·2024
Same journal

Wildland Fires in the US between 2007 and 2018: Characterizing Equity in Exposures and Health Impacts.

Environmental science & technology·2026
Same journal

Profiling Active Low-Abundance Microbes in As/Sb-Contaminated Soils via d-Amino Acid-Based In Situ Labeling.

Environmental science & technology·2026
Same journal

Looking beyond Sorption in GAC Filters: How Extended Contact Times and Functionally Distinct Microbial Biomass Enable Enhanced Micropollutant Biodegradation.

Environmental science & technology·2026
Same journal

Integrating Experiments and Models To Unravel Interactions between Soil Organic Matter and Enhanced Weathering.

Environmental science & technology·2026
Same journal

Role of Advanced Direct Extraction Technologies in Reducing Environmental Impacts of Lithium Production.

Environmental science & technology·2026
Same journal

Comparison of High Spatial Resolution PM<sub>2.5</sub>, PM<sub>10</sub>, and NO<sub>2</sub> Estimates Using a Deep Ensemble Machine Learning Framework in a Low Pollution Setting.

Environmental science & technology·2026
查看所有相关文章

相关实验视频

Updated: Jan 14, 2026

Microfluidic Mixers for Studying Protein Folding
12:42

Microfluidic Mixers for Studying Protein Folding

Published on: April 10, 2012

15.5K

来自球体点源注射的反应混合前线的增长和停止.

Luka Negrojević1, Pratyaksh Karan2, Joris Heyman2

  • 1Nonlinear Physical Chemistry Unit, Université Libre de Bruxelles (ULB), CP231, 1050 Brussels, Belgium.

Environmental science & technology
|October 24, 2025
PubMed
概括
此摘要是机器生成的。

研究人员在点源注射期间在3D多孔介质中发现了自我组织的静止球体,揭示了新的反应性运输动力学. 这一发现对于理解涉及化学前线的环境过程至关重要.

关键词:
在3D成像中使用3D成像.双分子反应是双分子反应.化学战线的前沿 化学战线透的媒介是多孔的反应-扩散-转向反应反应式运输是一种反应式运输.

更多相关视频

Quantifying Mixing using Magnetic Resonance Imaging
07:33

Quantifying Mixing using Magnetic Resonance Imaging

Published on: January 25, 2012

11.4K
Analyzing Mixing Inhomogeneity in a Microfluidic Device by Microscale Schlieren Technique
10:12

Analyzing Mixing Inhomogeneity in a Microfluidic Device by Microscale Schlieren Technique

Published on: June 12, 2015

9.5K

相关实验视频

Last Updated: Jan 14, 2026

Microfluidic Mixers for Studying Protein Folding
12:42

Microfluidic Mixers for Studying Protein Folding

Published on: April 10, 2012

15.5K
Quantifying Mixing using Magnetic Resonance Imaging
07:33

Quantifying Mixing using Magnetic Resonance Imaging

Published on: January 25, 2012

11.4K
Analyzing Mixing Inhomogeneity in a Microfluidic Device by Microscale Schlieren Technique
10:12

Analyzing Mixing Inhomogeneity in a Microfluidic Device by Microscale Schlieren Technique

Published on: June 12, 2015

9.5K

科学领域:

  • 环境科学 环境科学
  • 化学工程是化学工程的重要组成部分.
  • 流体动力学 流体动力学

背景情况:

  • 环境中的反应过程通常涉及从点源注入到介质中的化学前线形成与另一个反应物.
  • 在平面和圆柱体系统中,双分子反应前线得到了很好的研究,但在3D多孔介质中,球形配置尚未得到充分的探索.
  • 了解这些动态对于环境应用来说至关重要,特别是地下溶液运输.

研究的目的:

  • 实验性地研究二分子反应前线的动力学,其球形配置是通过点状注入3D多孔介质而产生的.
  • 分析自我组织的静止反应区的形成.
  • 为了验证对3D领域的反应性前线增长和停止的理论预测.

主要方法:

  • 在基于水凝的介质中利用双分子氧化还原反应来模拟环境反应运输.
  • 通过实验测量了产品分布,前部位置和产品随时间的形成.
  • 进行了数值模拟,以分析反应剂扩散率差异对前端特征的影响.

主要成果:

  • 证明了自我组织的静止球体的形成,其中反应区保持固定半径.
  • 确定静止前半径与流量线性缩放,与扩散系数和度比率相反.
  • 在受反应剂扩散性影响的反应运输中确定了新的动态模式.

结论:

  • 在3D多孔介质中点状注入可以导致自组织的静止球形反应前线.
  • 实验数据支持对3D中反应性前部停止的理论预测.
  • 强调需要全面的3D建模,以便在涉及点注射的环境应用中准确模拟反应式运输.