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相关概念视频

The Maximum Power Transfer Theorem01:20

The Maximum Power Transfer Theorem

677
Consider a linear AC Thevenin equivalent circuit connected to a load impedance.
The load connected draws the current, and the circuit delivers the power to the load. The alternating current flowing through the load is determined using the rectangular form of voltages, currents, network impedance, and load impedance. The average power delivered to the load is obtained from the product of the square of current and load resistance.
677
Power Factor01:11

Power Factor

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The power factor is defined as the ratio of average (or active) power to apparent power, as illustrated by the relation
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Nuclear Power02:36

Nuclear Power

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Controlled nuclear fission reactions are used to generate electricity. Any nuclear reactor that produces power via the fission of uranium or plutonium by bombardment with neutrons has six components: nuclear fuel consisting of fissionable material, a nuclear moderator, a neutron source, control rods, reactor coolant, and a shield and containment system.
Nuclear Fuels
Nuclear fuel consists of a fissile isotope, such as uranium-235, which must be present in sufficient quantity to provide a...
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Power Factor Correction01:20

Power Factor Correction

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The power transmission to a factory involves the transfer of apparent power, a combination of active and reactive power. The power factor measures how effectively electrical power is converted into useful work output. The ratio of the real power (KW) that does the work to the apparent power (KVA) supplied to the circuit.
216
Maximum Power Transfer01:16

Maximum Power Transfer

298
Numerous practical applications within engineering disciplines, such as telecommunications, necessitate optimizing power delivery to a connected load. This pursuit, however, entails inherent internal losses, which can either equal or exceed the power supplied to the load. The Thevenin equivalent circuit is helpful in finding the maximum power a linear circuit can deliver to a load. It is assumed in this context that the load resistance can be adjusted.
By substituting the entire circuit with...
298
Power01:08

Power

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The concept of work involves force and displacement; meanwhile, the work-energy theorem relates the net work done on a body to the difference in its kinetic energy, calculated between two points on its trajectory. While none of these quantities or relations involves time explicitly, we know that the time available to accomplish work is often just as important as the amount of work itself. For example, sprinters in a race may have achieved the same velocity at the finish, therefore,...
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Updated: Jul 27, 2025

A Fast and Quantitative Method for Post-translational Modification and Variant Enabled Mapping of Peptides to Genomes
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POWTEX访问了POWGEN公司

Andreas Houben1, Yannick Meinerzhagen1, Noah Nachtigall1

  • 1Chair of Solid-State and Quantum Chemistry, Institute of Inorganic Chemistry, RWTH Aachen University, D-52056 Aachen, Nordrhein-Westfalen, Germany.

Journal of applied crystallography
|June 7, 2023
PubMed
概括
此摘要是机器生成的。

研究人员开发了一种新的无3He中子探测器,用于粉末和纹理分析,证明了它的能力,尽管运输损坏. 多维数据精细化为中子飞行时间衍光度计提供了比传统方法更好的精度.

关键词:
在DREAM的光线线上.在POWGEN梁线上在POWTEX探测器中使用.瑞特维尔德精炼 瑞特维尔德精炼角分散精细化 角分散精细化多维的精细化,多维的提炼.中子探测器中子探测器粉末衍射衍射的方法飞行时间的折射差.波长分散的精炼是波长分散的.

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科学领域:

  • 材料科学与工程 材料科学与工程
  • 凝聚物质物理学 凝聚物质物理学
  • 中子散射技术 中子散射技术

背景情况:

  • 由于3He危机,需要开发替代性中子探测器,用于大面积衍光仪.
  • 在FRM II研究反应堆中,POWTEX中子衍光仪正在建造中,用于粉末和纹理分析.
  • 现有的中子探测技术面临局限性,推动探测器设计和数据分析方面的创新.

研究的目的:

  • 报告为POWTEX衍光度计开发的一种新型3He无探测器单元的性能.
  • 评估探测器的数据质量,并使用多维精细化改进分析方法.
  • 为了将新的二维精炼技术与传统的一维方法进行比较,以获得飞行时间中子粉散射数据.

主要方法:

  • 在分离中子源的POWGEN中子粉衍光仪上运行POWTEX探测器单元.
  • 运输损坏的特征和检测器voxel位置的重新校准.
  • 使用Mantid中的PowderReduceP2D进行数据缩小,并使用修改后的GSAS-II套件进行多维精细化.

主要成果:

  • 尽管承受了运输损坏,POWTEX探测器单元成功获得了取决于角度和波长的数据.
  • 仪器分辨率参数是使用粉状钻石标准样本来确定的.
  • 与传统的1D精制相比,BaZn(NCN) 2的多维 (2D) 精制显示出精度微妙但显著的差异,特别是晶格参数和结合角度.

结论:

  • 开发的3He无探测器技术适用于大面积中子衍光仪.
  • 多维数据精细化为从飞行时间中子衍射数据的结构分析提供了更高的精度.
  • 这些发现对于POWTEX和其他未来的中子散射设施的成功运行至关重要.