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相关概念视频

Catalysis02:50

Catalysis

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The presence of a catalyst affects the rate of a chemical reaction. A catalyst is a substance that can increase the reaction rate without being consumed during the process. A basic comprehension of a catalysts’ role during chemical reactions can be understood from the concept of reaction mechanisms and energy diagrams.
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Introduction to Mechanisms of Enzyme Catalysis01:13

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For many years, scientists thought that enzyme-substrate binding took place in a simple "lock-and-key" fashion. This model stated that the enzyme and substrate fit together perfectly in one instantaneous step. However, current research supports a more refined view scientists call induced fit. The induced-fit model expands upon the lock-and-key model by describing a more dynamic interaction between enzyme and substrate. As the enzyme and substrate come together, their interaction causes...
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Machines01:19

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Machines are complex structures consisting of movable, pin-connected multi-force members that work together to transmit forces. One example of a machine is the cutting plier, which is used to cut wires by applying forces to its handles. When equal and opposite forces are exerted on the handles of the cutting plier, they cause the cutting edges to come together and apply equal and opposite reaction forces on the wire, which are greater than the applied forces.
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Machines: Problem Solving II01:30

Machines: Problem Solving II

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Machines are complex structures consisting of movable, pin-connected multi-force members that work together to transmit forces. Consider a lifting tong carrying a 100 kg load. It comprises movable sections DAF and CBG linked together with member AB.
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A toggle clamp is a mechanical device commonly used for holding and clamping objects in various applications, such as woodworking, metalworking, and assembly operations. Consider a toggle clamp subjected to a force of 200 N at the handle. The vertical clamping force can be calculated, provided the dimensions of the toggle clamp are known.
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在异质催化中用于机器学习的特征工程方法.

Yu Jin1, Hang-Biao Lv1, Shisheng Zheng1

  • 1College of Energy, State Key Laboratory of Physical Chemistry of Solid Surfaces, iChEM, College of Chemistry and Chemical Engineering, Institute of Artificial Intelligence, Xiamen University, Xiamen 361005, Fujian, China. zhengss@xmu.edu.cn.

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概括
此摘要是机器生成的。

特性工程正在推进机器学习,用于材料发现的异质催化. 本综述详细介绍了其从基本描述符到复杂的多式联运表示的演变,强调了当前的挑战和未来的方向.

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科学领域:

  • 催化剂是一种催化剂.
  • 材料科学 材料科学 材料科学
  • 计算化学计算化学

背景情况:

  • 机器学习 (ML) 在异质催化中越来越重要.
  • 特性工程对于将催化剂结构与机器学习模型联系起来至关重要.
  • 本综述探讨了该领域特征工程的历史发展和未来.

研究的目的:

  • 系统地审查在异质催化中特征工程的演变.
  • 识别特征工程中的当前挑战和新兴战略.
  • 引导未来的ML驱动的催化研究创新.

主要方法:

  • 关于异质催化物的特征工程技术的文献综述.
  • 特征的分类:手工制作的描述符,符号回归,基于图形的,拓的和多式联络的.
  • 分析挑战和提出解决方案.

主要成果:

  • 特性工程已经从简单的描述器发展到复杂的图形和拓特征.
  • 最近的进展包括整合文本和结构的多式模式表示.
  • 关键的挑战包括发展不足的多式联运方法,可解释性和跨度描述器.

结论:

  • 特性工程在异质催化中对ML至关重要,使材料发现和机械洞察成为可能.
  • 应对当前的挑战将进一步增强ML对催化物的影响.
  • 在特征工程领域的持续创新对于推进异质催化研究至关重要.