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相关概念视频

Distribution of Molecular Speeds01:27

Distribution of Molecular Speeds

3.9K
The motion of molecules in a gas is random in magnitude and direction for individual molecules, but a gas of many molecules has a predictable distribution of molecular speeds. This predictable distribution of molecular speeds is known as the Maxwell-Boltzmann distribution. The distribution of molecular speeds in liquids is comparable to that of gases but not identical and can help to understand the phenomenon of the boiling and vapor pressure of a liquid. Consider that a molecule requires a...
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Molecular Models02:00

Molecular Models

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Physical models representing molecular architectures of chemical compounds play essential roles in understanding chemistry. The use of molecular models makes it easier to visualize the structures and shapes of atoms and molecules.
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Molecular Kinetic Energy01:21

Molecular Kinetic Energy

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The word "gas" comes from the Flemish word meaning "chaos," first used to describe vapors by the chemist J. B. van Helmont. Consider a container filled with gas, with a continuous and random motion of molecules. During collisions, the velocity component parallel to the wall is unchanged, and the component perpendicular to the wall reverses direction but does not change in magnitude. If the molecule’s velocity changes in the x-direction, then its momentum is changed.
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Behavior of Gas Molecules: Molecular Diffusion, Mean Free Path, and Effusion03:48

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

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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...
28.8K
Molecular Comparison of Gases, Liquids, and Solids02:26

Molecular Comparison of Gases, Liquids, and Solids

40.9K
Particles in a solid are tightly packed together (fixed shape) and often arranged in a regular pattern; in a liquid, they are close together with no regular arrangement (no fixed shape); in a gas, they are far apart with no regular arrangement (no fixed shape). Particles in a solid vibrate about fixed positions (cannot flow) and do not generally move in relation to one another; in a liquid, they move past each other (can flow) but remain in essentially constant contact; in a gas, they move...
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Molecular Geometry and Dipole Moments02:36

Molecular Geometry and Dipole Moments

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The VSEPR theory can be used to determine the electron pair geometries and molecular structures as follows:
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相关实验视频

Updated: Jun 24, 2025

Analyzing Melts and Fluids from Ab Initio Molecular Dynamics Simulations with the UMD Package
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MolDy:分子动力学模拟变得容易

Mohd Imran Khan1, Sheetal Pathania1, Mohammed W Al-Rabia2,3

  • 1Division of Bioinformatics, AIBR Artificial Intelligence and Biochemical Research Pvt. Ltd., New Delhi 110076, India.

Bioinformatics (Oxford, England)
|June 13, 2024
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此摘要是机器生成的。

MolDy是一个新的,用户友好的应用程序,使用GROMACS.简化分子动力学 (MD) 模拟. 它使得没有Linux专业知识的研究人员能够进行复杂的分析和可视化结果,加速药物发现.

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科学领域:

  • 计算生物学是一种计算生物学.
  • 生物物理学的生物物理.
  • 药物发现 药物发现

背景情况:

  • 分子动力学 (MD) 模拟对于理解生物分子结构,折叠和相互作用至关重要,对于药物开发至关重要.
  • 格罗马克斯软件是MD模拟的强大工具,但需要显著的用户专业知识和脚本技能.
  • 需要更容易获得的工具来利用MD模拟在生物研究中的力量.

研究的目的:

  • 开发一个直观的,端到端的应用程序,用于执行分子动力学模拟.
  • 为了降低使用GROMACS进行生物分子模拟的研究人员的进入障碍.
  • 提供模拟数据的综合分析和可视化.

主要方法:

  • 开发了MolDy,这是一个交互式的前端应用程序,具有基于Python和Perl的后端.
  • 集成的MolDy与GROMACS模拟包和Linux外.
  • 设计了一个可自定义的用户界面,为初学者提供预先填写的参数和专家修改的选项.

主要成果:

  • MolDy提供了一个用户友好的界面,不需要先前的Linux知识.
  • 该应用程序通过单个命令轻松安装,并以最小的系统配置运行.
  • MolDy提供模拟轨迹和生物物理参数的图形表示.

结论:

  • MolDy使分子动力学模拟实现了民主化,使其可供更广泛的研究人员使用.
  • 该工具有助于有效分析生物分子相互作用和结构.
  • MolDy是免费可用于学术用途,支持计算生物学和药物发现的进步.