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Electrical synapses found in all nervous systems play important and unique roles. In these synapses, the presynaptic and postsynaptic membranes are very close together (3.5 nm) and are actually physically connected by channel proteins forming gap junctions.
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Nuclear reprogramming is a process of transforming one cell type into an unrelated cell type by epigenetic changes that alter the cell’s original gene expression pattern. Such epigenetic changes force cells to express a different set of genes, which play a significant role in inducing transformation into other cell types. Nuclear reprogramming offers applications in reproductive cloning for livestock propagation and regenerative medicine — developing patient-specific cells for...
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Today, scientists agree that good research is ethical in nature and is guided by a basic respect for human dignity and safety. However, this has not always been the case. Modern researchers must demonstrate that the research they perform is ethically sound.
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Nuclear reprogramming is the process of switching gene expression of one cell type to that of another cell type, usually from a differentiated cell state to an undifferentiated cell state. Differentiation occurs during processes such as development and morphogenesis, tissue regeneration, and malignancy. Cells can also be artificially induced to reprogram their gene expression by techniques such as nuclear transfer, induced pluripotency, and cell fusion. Such techniques have many applications in...
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Electrical Systems01:21

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In electrical engineering, the analysis of networks composed of passive linear components — resistors (R), capacitors (C), and inductors (L) — is fundamental. These components are organized into circuits where the relationship between input and output can be analyzed using transfer functions. The transfer function of an RLC circuit, which relates the voltage across a capacitor to the input voltage, can be derived using Kirchhoff's laws.
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重新构建科学外交

Vaughan C Turekian1, Peter Gluckman2

  • 1Vaughan C. Turekian* is the executive director of Policy and Global Affairs at the US National Academies of Sciences, Engineering and Medicine (NASEM), Washington, DC, USA.

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概括
此摘要是机器生成的。

科学外交曾经是理想主义的, 在激烈竞争的时代, 需要新的"交易科学外交".

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科学领域:

  • 国际关系
  • 科学和技术政策
  • 全球研究

背景情况:

  • 科学外交在历史上是建立桥梁的工具, 促进跨越地缘政治分歧的对话和信任.
  • 这种理想模式是冷战后国际合作的关键组成部分.
  • 最近的地缘政治变化和日益激烈的竞争正在影响传统的科学外交.

研究的目的:

  • 分析科学外交的变化.
  • 在当前的地缘政治环境中提出科学外交的新框架.
  • 确保科学外交的持续相关性和有效性.

主要方法:

  • 对科学外交的历史作用的概念分析.
  • 研究影响国际科学合作的当前地缘政治趋势.
  • 发展"交易科学外交"的概念.

主要成果:

  • 传统的科学外交越来越受到地缘政治现实的挑战.
  • 现在国家将科学技术视为战略资产.
  • 需要转向更加务实的,交易式的方法.

结论:

  • 科学外交必须适应在日益严重的地缘政治紧张局势中保持有效.
  • 交易模式强调相互利益和战略一致性.
  • 这种新的参与模式对于应对当代全球挑战至关重要.