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相关概念视频

Thermodynamic Systems01:06

Thermodynamic Systems

5.0K
A thermodynamic system is a set of objects whose thermodynamic properties are of interest. The system is considered to be embedded in its surroundings or the environment. The system and its environment can exchange heat and do work on each other through a boundary that separates them. However, the immediate surroundings of the system interact with it directly and therefore have a much stronger influence on its behavior and properties.
Consider an example of  tea boiling in a kettle. The...
5.0K
Thermodynamic Potentials01:26

Thermodynamic Potentials

813
Thermodynamic potentials are state functions that are extremely useful in analyzing a thermodynamic system. They have dimensions of energy. The four important thermodynamic potentials are internal energy, enthalpy, Helmholtz free energy, and Gibbs free energy. These thermodynamic potentials can be expressed using two of the following variables: pressure, volume, temperature, and entropy. These two variables are expressed as the rate of change of the thermodynamic potential with respect to other...
813
Thermodynamics: Chemical Potential and Activity01:10

Thermodynamics: Chemical Potential and Activity

932
The effective concentration of a species in a solution can be expressed precisely in terms of its activity. Activity considers the effect of electrolytes present in the vicinity of the species of interest and depends on the ionic strength of the solution. The activity of a species is expressed as the product of molar concentration and the activity coefficient of the species.
The thermodynamic equilibrium constant is more accurately defined in terms of activity rather than concentration.
932
Path Between Thermodynamics States01:21

Path Between Thermodynamics States

3.1K
Consider the two thermodynamic processes involving an ideal gas that are represented by paths AC and ABC in Figure 1:
3.1K
Thermal Sigmatropic Reactions: Overview01:16

Thermal Sigmatropic Reactions: Overview

2.1K
Sigmatropic rearrangements are a class of pericyclic reactions in which a σ bond migrates from one part of a π system to another. These are intramolecular rearrangements where the total number of σ and π bonds remain unchanged.
Sigmatropic shifts are classified based on an order term [i, j ], where i and j indicate the number of atoms across which each end of the σ bond migrates. Below are examples of a [3,3] sigmatropic shift in...
2.1K
First Law Of Thermodynamics: Problem-Solving01:21

First Law Of Thermodynamics: Problem-Solving

2.6K
The first law of thermodynamics states that the change in internal energy of the system is equal to the net heat transfer into the system minus the net work done by the system. This equation is a generalized form of energy conservation and can be applied to any thermodynamic process.
The following strategies can be used to solve any problem involving the first law of thermodynamics.
2.6K

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相关实验视频

Updated: Jun 19, 2025

Author Spotlight: Simulation and Analysis of the Temperature Rise of Ring Main Unit Equipment
04:35

Author Spotlight: Simulation and Analysis of the Temperature Rise of Ring Main Unit Equipment

Published on: July 5, 2024

1.8K

一个可操作的知识表示系统,用于热力学.

Luisa Vollmer1, Sophie Fellenz1, Fabian Jirasek1

  • 1RPTU Kaiserslautern, 67663 Kaiserslautern, Germany.

Journal of chemical information and modeling
|July 23, 2024
PubMed
概括
此摘要是机器生成的。

人类热力学知识现在可以使用KnowTD系统转移到计算机上. 这使机器能够解决热力学问题,为引入工程热力学提供正确和可解释的解决方案.

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A Rapid Method for Modeling a Variable Cycle Engine
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Surrogate Model Development for Digital Experiments in Welding
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相关实验视频

Last Updated: Jun 19, 2025

Author Spotlight: Simulation and Analysis of the Temperature Rise of Ring Main Unit Equipment
04:35

Author Spotlight: Simulation and Analysis of the Temperature Rise of Ring Main Unit Equipment

Published on: July 5, 2024

1.8K
A Rapid Method for Modeling a Variable Cycle Engine
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A Rapid Method for Modeling a Variable Cycle Engine

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Surrogate Model Development for Digital Experiments in Welding
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Surrogate Model Development for Digital Experiments in Welding

Published on: March 28, 2025

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科学领域:

  • 热力学是一种热力学.
  • 人工智能的人工智能
  • 知识表示 知识表示

背景情况:

  • 人类在热力学方面的专业知识很难转移到计算系统中.
  • 现有的计算工具缺乏可解释性和正确性保证,用于热力学问题解决.

研究的目的:

  • 开发一种系统,将人类的热力学知识转移到计算机上.
  • 使机器能够通过可解释和正确的解决方案来解决热力学问题.

主要方法:

  • 创建了KnowTD,这是一个基于热力学本体学的知识表示系统.
  • 将本体学与推理器结合起来,以处理用户输入,检索方程和解决问题.
  • 开发了一个生成可解释解决方案的系统.

主要成果:

  • 证明了人类热力学知识的成功转移到计算机系统.
  • KnowTD可以解决简单的热力学问题,保证正确性和解释.
  • 该系统目前仅限于入门级工程热力学问题.

结论:

  • 人类热力学知识可以被计算系统有效地编码和利用.
  • 在热力学中,KnowTD为可解释的AI提供了基础.
  • 模块化设计允许未来扩展到更复杂的热力学问题.