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Wet Beveling of Microinjection Needles Utilizing Constant Air Pressure for Feedback on Needle Opening06:00

Wet Beveling of Microinjection Needles Utilizing Constant Air Pressure for Feedback on Needle Opening

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This protocol describes the assembly of a pneumatic system for the delivery of pressurized air to a needle during the process of needle beveling. The protocol further describes the beveling process for creating sharp microinjection needles and how to gauge the relative opening size of the...
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Fully Endoscopic Mitral Valve Repair with Percutaneous Cannulation of Groin Vessels08:12

Fully Endoscopic Mitral Valve Repair with Percutaneous Cannulation of Groin Vessels

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This protocol demonstrates in detail how to perform fully endoscopic mitral valve surgery (EMS) with percutaneous cannulation of the groin vessels, using a percutaneous plug-based vascular closure device. Fundamental steps and useful instructions are described in detail for each step.
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A Two-Step Method for Percutaneous Transhepatic Choledochoscopic Lithotomy03:56

A Two-Step Method for Percutaneous Transhepatic Choledochoscopic Lithotomy

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This "two-step method" significantly improved the success rate of percutaneous transhepatic choledochoscopy and achieved a better prognosis of intrahepatic and extrahepatic...
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Three-Dimensional Printing Guide Template Assisted Percutaneous Vertebroplasty (PVP)05:39

Three-Dimensional Printing Guide Template Assisted Percutaneous Vertebroplasty (PVP)

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Herein, we present a three-dimensional printing guide template for percutaneous vertebraplasty. A patient with a T11 vertebral compression fracture was selected as a case...
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In Vivo, Percutaneous, Needle Based, Optical Coherence Tomography of Renal Masses09:31

In Vivo, Percutaneous, Needle Based, Optical Coherence Tomography of Renal Masses

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Optical coherence tomography (OCT) is a high resolution imaging technique that allows analysis of tissue specific optical properties providing the means for tissue differentiation. We developed needle based OCT, providing real-time imaging combined with on-the-spot tumor differentiation. This publication describes a method for percutaneous, needle based OCT of renal...
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Preparation and Respirometric Assessment of Mitochondria Isolated from Skeletal Muscle Tissue Obtained by Percutaneous Needle Biopsy11:27

Preparation and Respirometric Assessment of Mitochondria Isolated from Skeletal Muscle Tissue Obtained by Percutaneous Needle Biopsy

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Methods for biopsy of Vastus lateralis, preparation of purified mitochondria, and respirometric profiling are described. The use of small muscle volume makes this technique suitable for clinical research...
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関連する実験動画

Updated: Jan 30, 2026

A Two-Step Method for Percutaneous Transhepatic Choledochoscopic Lithotomy
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A Two-Step Method for Percutaneous Transhepatic Choledochoscopic Lithotomy

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ディスロケーションマルチジャンクションとストレスの硬化.

Vasily V Bulatov1, Luke L Hsiung, Meijie Tang

  • 1Lawrence Livermore National Laboratory, University of California, Livermore, California 94550, USA. bulatov1@llnl.gov

Nature
|April 28, 2006
PubMed
まとめ
この要約は機械生成です。

研究者が発見したのは,研究者の発見でした.

さらに関連する動画

In Vivo, Percutaneous, Needle Based, Optical Coherence Tomography of Renal Masses
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Preparation and Respirometric Assessment of Mitochondria Isolated from Skeletal Muscle Tissue Obtained by Percutaneous Needle Biopsy
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関連する実験動画

Last Updated: Jan 30, 2026

A Two-Step Method for Percutaneous Transhepatic Choledochoscopic Lithotomy
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In Vivo, Percutaneous, Needle Based, Optical Coherence Tomography of Renal Masses
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Preparation and Respirometric Assessment of Mitochondria Isolated from Skeletal Muscle Tissue Obtained by Percutaneous Needle Biopsy
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科学分野:

  • マテリアルサイエンス 材料科学
  • 凝縮物質物理学 凝縮物質物理学
  • 固体力学 固体力学とは

背景:

  • 結晶の強さは,直線の欠陥である変位の振る舞いに左右されます.
  • 現存する理論では,交差点を形成する変位相互作用を通じてストレスの硬化を説明している.
  • 結晶の強化における複雑で多発位の相互作用の役割は,まだあまり理解されていない.

研究 の 目的:

  • 3つの変位間の相互作用によって形成されるトポロジック要素を調査する.
  • これらの新しい構造が結晶の可塑性と強さに与える影響を理解するために.
  • 結晶のストレス硬化におけるこれらの相互作用の役割を明らかにする.

主な方法:

  • 新しいトポロジカル要素を予測するための変位ダイナミクスシミュレーション.
  • ナノスケールでの欠陥行動を分析するための原子模擬.
  • シングル結晶モリブデンにおけるシミュレーション結果を実験的に検証するための伝送電子顕微鏡.

主要な成果:

  • 新しいタイプの変位ネットワークトポロジーである"マルチジャンクション"の識別と予測.
  • マルチジャンクションは,変位運動に対する強力な障害であり,変位増殖の源である.
  • 変形したモリブデンウム結晶における複数結合の実験的確認.

結論:

  • マルチジャンクションは,変位マイクロ構造の進化と結晶の強度に大きな影響を与えます.
  • これらの構造は,体中心の立方体結晶で観察される方向性依存の張力硬化に責任があります.
  • この発見は,結晶の可塑性や強化メカニズムに関する新たな視点を提示する.