Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Gradually Varying Flow01:29

Gradually Varying Flow

Gradually varying flow (GVF) in open channels describes situations where water depth changes slowly along the channel due to factors like non-uniform bed slope, channel shape variations, or obstructions. This flow type occurs when the depth adjusts gradually to balance gravitational forces, shear forces, and energy requirements, resulting in a low rate of depth change.Characteristics of Gradually Varying FlowGVF is commonly observed in natural streams, rivers, and canals, where flow depth...
Rapidly Varying Flow01:24

Rapidly Varying Flow

Rapidly varying flow (RVF) in open channels is characterized by abrupt changes in flow depth over a short distance, with the rate of depth change relative to distance often approaching unity. These flows are inherently complex due to their transient and multi-dimensional nature, making exact analysis difficult. However, approximate solutions using simplified models provide valuable insights into their behavior.Key Features of Rapidly Varying FlowRVF is commonly observed in scenarios involving...

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Excellence in Clinical Care and Quality Metrics.

The Annals of thoracic surgery·2026
Same author

Robotic tracheal resections on veno-venous extracorporeal membrane oxygenation with 23-hour length of stay and without guardian chin stitch.

Frontiers in surgery·2026
Same author

Coronary ostial plasty using femoral artery homograft following arterial switch operation.

JTCVS techniques·2026
Same author

Hybrid robotic mitral valve surgery with staged percutaneous coronary intervention for degenerative mitral regurgitation and coronary artery disease.

JTCVS techniques·2026
Same author

The Society of Thoracic Surgeons Expert Consensus Pathway for Robotic Cardiac Surgical Training.

The Annals of thoracic surgery·2026
Same author

Transvenous Bullet Embolism: A Case Report of a Successful Right Ventricular "Bulletectomy".

JACC. Case reports·2025

相关实验视频

Updated: Jul 10, 2026

Characterization of the Isolated, Ventilated, and Instrumented Mouse Lung Perfused with Pulsatile Flow
10:02

Characterization of the Isolated, Ventilated, and Instrumented Mouse Lung Perfused with Pulsatile Flow

Published on: April 29, 2011

16.2K

使用临床连续流量产生脉冲性流量.

Joav Birjiniuk1, Deane E Smith2, Eugene A Grossi2

  • 1Department of Surgery, New York University Langone Medical Center, New York, New York.

JHLT open
|March 27, 2025
PubMed
概括

从连续流装置生成脉动流是具有挑战性的,因为粘性效应. 需要新的正位移来创造生理脉动的流动,并提高机械循环支的安全性.

科学领域:

  • 生物医学工程 生物医学工程
  • 心血管生理学心血管生理学

背景情况:

  • 机械循环支持 (MCS) 越来越多地用于长期心肺功能增强.
  • 目前的MCS设备面临的风险包括血栓形成,故障,不充分的心室卸载,右侧功能障碍和末端器官输液.
  • 通过模仿自然生理流和压力概况来减轻这些风险,建议产生脉动流.

研究的目的:

  • 用连续流装置来描述产生脉冲流的努力.
  • 提出关于实现生理脉动流的挑战的机械论点.
  • 突出需要新的脉动式设计的需要.

主要方法:

  • 审查先前的文献和教科书,以建立理论基础.
  • 分析与为脉动性修改连续流装置相关的机械挑战.

主要成果:

  • 从连续流装置中创建脉动流的尝试受到振荡系统中粘性效应的阻碍.
  • 现有的设备和研究设置无法产生真正的生理脉动流.
  • 需要使用正位移的新设备来模仿本地心脏波形.

结论:

  • 通过连续流装置产生脉动流的机械挑战限制了临床采用.
关键词:
连续流的连续流.流体力学的流体力学机械循环支持 机械循环支持脉动式的流动流动.

更多相关视频

In Vitro Model of Physiological and Pathological Blood Flow with Application to Investigations of Vascular Cell Remodeling
07:30

In Vitro Model of Physiological and Pathological Blood Flow with Application to Investigations of Vascular Cell Remodeling

Published on: November 3, 2015

9.6K
Pneumococcus Infection of Primary Human Endothelial Cells in Constant Flow
09:34

Pneumococcus Infection of Primary Human Endothelial Cells in Constant Flow

Published on: October 31, 2019

6.3K

相关实验视频

Last Updated: Jul 10, 2026

Characterization of the Isolated, Ventilated, and Instrumented Mouse Lung Perfused with Pulsatile Flow
10:02

Characterization of the Isolated, Ventilated, and Instrumented Mouse Lung Perfused with Pulsatile Flow

Published on: April 29, 2011

16.2K
In Vitro Model of Physiological and Pathological Blood Flow with Application to Investigations of Vascular Cell Remodeling
07:30

In Vitro Model of Physiological and Pathological Blood Flow with Application to Investigations of Vascular Cell Remodeling

Published on: November 3, 2015

9.6K
Pneumococcus Infection of Primary Human Endothelial Cells in Constant Flow
09:34

Pneumococcus Infection of Primary Human Endothelial Cells in Constant Flow

Published on: October 31, 2019

6.3K
  • 开发新的脉动性对于实现足够的生理脉动性至关重要.
  • 改进的脉动式可以在机械循环支持中导致更好的副作用.