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

Concentration and Rate Law03:03

Concentration and Rate Law

38.2K
The rate of a reaction is affected by the concentrations of reactants. Rate laws (differential rate laws) or rate equations are mathematical expressions describing the relationship between the rate of a chemical reaction and the concentration of its reactants.
For example, in a generic reaction aA + bB ⟶ products, where a and b are stoichiometric coefficients, the rate law can be written as:
38.2K
Diffusion01:12

Diffusion

217.9K
Diffusion is the passive movement of substances down their concentration gradients—requiring no expenditure of cellular energy. Substances, such as molecules or ions, diffuse from an area of high concentration to an area of low concentration in the cytosol or across membranes. Eventually, the concentration will even out, with the substance moving randomly but causing no net change in concentration. Such a state is called dynamic equilibrium, which is essential for maintaining overall...
217.9K
Behavior of Gas Molecules: Molecular Diffusion, Mean Free Path, and Effusion03:48

Behavior of Gas Molecules: Molecular Diffusion, Mean Free Path, and Effusion

31.3K
Although gaseous molecules travel at tremendous speeds (hundreds of meters per second), they collide with other gaseous molecules and travel in many different directions before reaching the desired target. At room temperature, a gaseous molecule will experience billions of collisions per second. The mean free path is the average distance a molecule travels between collisions. The mean free path increases with decreasing pressure; in general, the mean free path for a gaseous molecule will be...
31.3K
Third Law of Thermodynamics02:38

Third Law of Thermodynamics

22.0K
A pure, perfectly crystalline solid possessing no kinetic energy (that is, at a temperature of absolute zero, 0 K) may be described by a single microstate, as its purity, perfect crystallinity,and complete lack of motion means there is but one possible location for each identical atom or molecule comprising the crystal (W = 1). According to the Boltzmann equation, the entropy of this system is zero.
22.0K
Second Law of Thermodynamics02:49

Second Law of Thermodynamics

26.9K
In the quest to identify a property that may reliably predict the spontaneity of a process, a promising candidate has been identified: entropy. Processes that involve an increase in entropy of the system (ΔS > 0) are very often spontaneous; however, examples to the contrary are plentiful. By expanding consideration of entropy changes to include the surroundings, a significant conclusion regarding the relation between this property and spontaneity may be reached. In thermodynamic models, the...
26.9K
Second Law of Thermodynamics00:53

Second Law of Thermodynamics

68.3K
The Second Law of Thermodynamics states that entropy, or the amount of disorder in a system, increases each time energy is transferred or transformed. Each energy transfer results in a certain amount of energy that is lost—usually in the form of heat—that increases the disorder of the surroundings. This can also be demonstrated in a classic food web. Herbivores harvest chemical energy from plants and release heat and carbon dioxide into the environment. Carnivores harvest the...
68.3K

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

Quantitative characterization of thermo-optically modulated microbend loss in silica fibers for high-temperature deep-well telemetry.

Scientific reports·2026
Same author

A spatiotemporal defect-integrated deepfake video detection and forgery algorithm attribution model.

Scientific reports·2026
Same author

Equivalent Refractive Index Modeling and Multidomain Characterization of the Temperature Response of Loss in Fiber-Optic Macro-Bends.

Sensors (Basel, Switzerland)·2026
Same author

Early recurrence of hepatocellular carcinoma after hepatectomy: predictive role of whole-tumor iodine density histogram features and resection margin distance.

Abdominal radiology (New York)·2026
Same author

Targeted metabolomics and Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry imaging revealed the spatial accumulation of anthocyanins in colored wheat (Triticum aestivum L.) in response to nitrogen application.

Food chemistry·2026
Same author

The effects of exogenous spermidine on starch development, multi-scale structure, and in vitro digestibility in wheat were investigated under drought stress.

Food chemistry: X·2026
Same journal

Research on a Regional Availability Evaluation Model for Road-Area High-Entropy Energy Based on Synergy Factors.

Entropy (Basel, Switzerland)·2026
Same journal

Atmospheric Turbulence Channel Modeling and Performance Analysis of a CO-ZP-OFDM Coherent Optical Communication System for UAV Air-to-Ground Scenarios.

Entropy (Basel, Switzerland)·2026
Same journal

Information Geometry and Asymptotic Theory for SMML Estimators.

Entropy (Basel, Switzerland)·2026
Same journal

Correlation Entropy and Power-Law Kinetics.

Entropy (Basel, Switzerland)·2026
Same journal

Research on the Contagion of Systemic Financial Risk Under the Impact of Climate Risks-From the Perspective of Complex Networks and Machine Learning.

Entropy (Basel, Switzerland)·2026
Same journal

The Statistical-Mechanical Meaning of the Wave Function of Quantum Mechanics.

Entropy (Basel, Switzerland)·2026
查看所有相关文章

相关实验视频

Updated: Jan 29, 2026

From Fast Fluorescence Imaging to Molecular Diffusion Law on Live Cell Membranes in a Commercial Microscope
15:10

From Fast Fluorescence Imaging to Molecular Diffusion Law on Live Cell Membranes in a Commercial Microscope

Published on: October 9, 2014

11.9K

莱维扩散在权力法下 随机重置 随机重置

Jianli Liu1, Yunyun Li1, Fabio Marchesoni1,2

  • 1MOE Key Laboratory of Advanced Micro-Structured Materials, School of Physics Science and Engineering, Tongji University, Shanghai 200092, China.

Entropy (Basel, Switzerland)
|January 28, 2026
PubMed
概括
此摘要是机器生成的。

列维走路的随机重置揭示了不同的扩散行为. 权力-法律重置创建了三个制度,包括超级扩散和本地化,影响搜索策略.

关键词:
布朗的运动 布朗的运动莱维走路走路是什么意思随机重置是指随机的重置.

更多相关视频

Stochastic Noise Application for the Assessment of Medial Vestibular Nucleus Neuron Sensitivity In Vitro
06:22

Stochastic Noise Application for the Assessment of Medial Vestibular Nucleus Neuron Sensitivity In Vitro

Published on: August 28, 2019

5.5K
Direct Stochastic Optical Reconstruction Microscopy of Extracellular Vesicles in Three Dimensions
09:36

Direct Stochastic Optical Reconstruction Microscopy of Extracellular Vesicles in Three Dimensions

Published on: August 26, 2021

4.4K

相关实验视频

Last Updated: Jan 29, 2026

From Fast Fluorescence Imaging to Molecular Diffusion Law on Live Cell Membranes in a Commercial Microscope
15:10

From Fast Fluorescence Imaging to Molecular Diffusion Law on Live Cell Membranes in a Commercial Microscope

Published on: October 9, 2014

11.9K
Stochastic Noise Application for the Assessment of Medial Vestibular Nucleus Neuron Sensitivity In Vitro
06:22

Stochastic Noise Application for the Assessment of Medial Vestibular Nucleus Neuron Sensitivity In Vitro

Published on: August 28, 2019

5.5K
Direct Stochastic Optical Reconstruction Microscopy of Extracellular Vesicles in Three Dimensions
09:36

Direct Stochastic Optical Reconstruction Microscopy of Extracellular Vesicles in Three Dimensions

Published on: August 26, 2021

4.4K

科学领域:

  • 统计物理 统计物理
  • 复杂的系统复杂的系统.
  • 非平衡的动力学.

背景情况:

  • 莱维步行表现出异常扩散,这对于从金融到生物学建模现象至关重要.
  • 随机重置引入了一个限制随机进程的机制,改变它们的长期行为.

研究的目的:

  • 为了研究不同重置策略对莱维步行扩散动态的影响.
  • 在指数和功率定律重置协议下描述平均平方位移 (MSD).

主要方法:

  • 结合数值模拟和使用更新理论的理论分析.
  • 对各种重置指数的平均平方位移 (MSD) 缩放规律的推导.

主要成果:

  • 指数式重置导致从超扩散到和稳定状态的急剧过渡.
  • 电力规律重置 (指数β) 会导致三种不同的MSD模式:自由超扩散 (β<1),可调节超扩散 (1<β<γ0+1) 和局部化 (β>γ0+1).
  • 理论MSD缩放规律与模拟数据显示出极好的一致性.

结论:

  • 这项研究提供了一个全面的理解,即随机重置如何塑造莱维步行扩散.
  • 结果为优化搜索策略和控制复杂,不平衡系统中的运输提供了洞察力.