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相关概念视频

NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences01:17

NMR Spectrometers: Radiofrequency Pulses and Pulse Sequences

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A pulse is a short burst of radio waves distributed over a range of frequencies that simultaneously excites all the nuclei in the sample. Upon passing a radio frequency pulse along the x-axis, the nuclei absorb energy corresponding to their Larmor frequencies and achieve resonance. This shifts the net magnetization vector from the z-axis toward the transverse plane. This angle of rotation of the magnetization vector, or the flip angle, is proportional to the duration and intensity of the pulse.
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相关实验视频

Updated: May 5, 2026

Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
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Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements

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激光脉冲调制方面的进展.

Daniele Robesti1,2, Davide Perri3, Giorgio Bozzini3

  • 1Division of Experimental Oncology/Unit of Urology, URI, IRCCS Ospedale San Raffaele.

Current opinion in urology
|March 13, 2026
PubMed
概括
此摘要是机器生成的。

脉冲调制技术提高了激光处理和效率在内泌尿外科的程序,如激光光和前列腺核切除. 然而,在艰难的临床结果中,优越性的明确证据仍然缺乏.

关键词:
霍尔:金石榴石的.激光石化三维精神治疗脉冲调制的脉冲调制方法thulium光纤激光器的使用方法

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Low-cost Custom Fabrication and Mode-locked Operation of an All-normal-dispersion Femtosecond Fiber Laser for Multiphoton Microscopy
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Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
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科学领域:

  • 内分泌病学 在内分泌病学.
  • 激光技术激光技术的使用
  • 手术方面的创新.

背景情况:

  • 脉冲调制技术正在在内分泌学中出现.
  • 这些技术改变了激光-流体-目标的相互作用.
  • 重点是激光光和内镜前列腺核切除.

研究的目的:

  • 审查最近关于脉冲调节在内分泌学中的临床影响的证据.
  • 专注于激光光和内镜前列腺核切除.
  • 评估激光-流体-目标相互作用的进展.

主要方法:

  • 对临床前模型,体外实验,前性队列,回顾性比较和随机对照试验的审查.
  • 分析先进的脉冲成型策略.
  • 评估像摩西和Magneto这样的技术.

主要成果:

  • 临床前数据显示改善了碎片化和逆推力控制.
  • 临床研究报告了可比的无石头率,可用于激光石术.
  • 在运营效率和能源消耗方面发现了适度的优势.
  • 前列腺疏核研究表明血静和效率有所改善,但没有功能性结果.

结论:

  • 脉冲调制技术提供了更好的激光处理和效率.
  • 对于脉冲调节的硬临床结果的优越性仍然没有得到证实.
  • 需要进一步的临床验证.