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相关概念视频

One-Degree-of-Freedom System01:24

One-Degree-of-Freedom System

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In mechanical engineering, one-degree-of-freedom systems form the basis of a wide range of electrical and mechanical components. Using these models, engineers can predict the behavior of various parts in a larger system, which gives them insight into how different forces interact with each other.
A one-degree-of-freedom system is defined by an independent variable that determines its state and behavior. One example of a one-degree-of-freedom system is a simple harmonic oscillator, such as a...
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Three-Dimensional Force System01:30

Three-Dimensional Force System

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In mechanical engineering, a three-dimensional force system is a system of forces acting in three dimensions, with forces applied along the x, y, and z coordinate axes. The three-dimensional force system is an important concept in mechanical engineering, as it allows engineers to understand and analyze the behavior of objects and structures in three dimensions. By understanding the forces acting on a system, engineers can design more efficient and effective mechanical systems that can withstand...
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Three-Dimensional Force System:Problem Solving01:30

Three-Dimensional Force System:Problem Solving

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A three-dimensional force system refers to a scenario in which three forces act simultaneously in three different directions. This type of problem is commonly encountered in physics and engineering, where it is necessary to calculate the resultant force on the system, which can then be used to predict or analyze the behavior of the object or structure under consideration.
To solve a three-dimensional force system, first resolve each force into its respective scalar components. Do this using...
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Two-Dimensional Force System01:20

Two-Dimensional Force System

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A two-dimensional system in mechanical engineering involves the analysis of motion and forces in a plane. A two-dimensional force vector can be resolved into its components as:
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Two-Dimensional Force System: Problem Solving01:29

Two-Dimensional Force System: Problem Solving

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Solving problems related to two-dimensional force systems is an essential aspect of mechanics and engineering. By applying the principles of vector analysis and force equilibrium, one can determine the effect of multiple forces acting on an object in a two-dimensional space.
The first step to solving a two-dimensional force system problem is to draw a free-body diagram of the object under consideration. This diagram helps identify all the external forces acting on the object, including their...
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Vector Transformation in Rotating Coordinate Systems01:16

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Consider a vector rotating about an axis with an angular velocity, such that its tip sweeps a circular path.
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基于2D矩阵阵列的3D引导LIFU的全新多功能系统

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概括

这项研究引入了一种新的多功能系统,用于3D定向低强度聚焦超声波 (LIFU),用于非侵入性脑刺激. 该系统提供精确的准,灵活的时间模式生成和骨偏差校正,促进临床翻译.

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3D 聚焦 3D 聚焦 3D 聚焦在LIFU中,您可以使用LIFU矩阵阵列数组是一个矩阵阵列数组.这是神经导航.神经刺激的神经刺激阶段式数组数组是一个阶段式数组数组.方向盘的方向盘是指向的方向盘超声波超声波是指超声波的使用.

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科学领域:

  • 神经科学是一个神经科学.
  • 生物医学工程 生物医学工程
  • 医疗器械 医疗器械

背景情况:

  • 非侵入性脑刺激正在通过超声波技术进步.
  • 低强度聚焦超声波 (LIFU) 提供精确的深度大脑准.
  • 临床应用需要具有3D方向盘,灵活的时模式和头骨偏差校正的系统.

研究的目的:

  • 为临床应用设计,制造和描述一个多功能3D引导的LIFU系统.
  • 为了验证一个阶段偏差校正 (PAC) 算法用于头骨补偿.
  • 评估系统是否符合医疗器械标准,并进行初始的MRI幻影研究.

主要方法:

  • 开发一个2D矩阵阵列LIFU系统,用于3D光束方向和聚焦.
  • 使用ex vivo头骨进行定制PAC算法的实施和验证.
  • 测试医疗器械标准的符合性,并通过磁共振声波辐射力成像进行MRI幻影研究.

主要成果:

  • 实现了3D光束方向和聚焦,侧焦尺寸降至4毫米,以实现精确的准.
  • 证明了任意时间信号模式 (波形,脉冲长度,工作周期,升级) 的生成.
  • 验证了头骨骨补偿的PAC算法,并在MRI研究中证实没有传感器工件.

结论:

  • 开发的LIFU系统为超声神经调节提供了一个灵活的平台,平衡符合规范的和单元的设置.
  • 该系统满足临床翻译的实际,技术,安全和监管要求.
  • 这种多功能系统促进了研究,并有助于理解LIFU对神经刺激的影响.