相关实验视频
Updated: Jan 22, 2026

10:29
Principles of Rodent Surgery for the New Surgeon
Published on: January 6, 2011
117.0K
从床边到长椅没有返回:外科医生到研究人员的转变 (2009-2024)
Joseph Sujka1, Rachel L Wolansky, Lorenzo Hiraldo
1Department of Surgery, University of South Florida Morsani College of Medicine, Tampa, FL.
Journal of the American College of Surgeons
|January 21, 2026
概括
在NIH资助的手术研究中,外科医生科学家的领导地位正在转变,MD-Only主要调查员 (PI) 的下降和MD-PhD PI的增加. 越来越多的MD PIs保持证书没有最近的临床实践,可能阻碍研究翻译.
科学领域:
- 手术研究的研究.
- 美国国家卫生研究院 (NIH) 资金趋势
- 医生科学家发展计划
背景情况:
- 外科医生科学家对于将实验室发现转化为临床实践至关重要.
- 由于竞争激烈的NIH资金,人们对外科研究领导中的医生代表存在担忧.
- 这项研究分析了15年的NIH手术资金,以了解外科医生科学家领导和临床参与的趋势.
研究的目的:
- 描述了15年来NIH资助的外科研究中外科医生科学家领导和临床参与的趋势.
- 检查主要研究员 (PI) 资格证书的不断变化的格局及其与现有临床实践的关系.
- 确定对研究结果双向翻译的潜在影响.
主要方法:
- 对2009年,2014年,2019年和2024年的NIH RePORTER数据进行分析 (N=4,511个独特的PI,4,011个赠款,177亿美元).
- 通过网络扫描收集PI凭证 (学位类型,国家提供者标识符,董事会认证) 和医疗保险计费活动.
- 双向ANOVA和差距分析评估了基于时间的相互作用以及临床认证和积极实践之间的关系.
主要成果:
- 美国国立卫生研究院的手术资金增加了53%,但赠款数量保持稳定.
- 只有MD的PI从48.9%降至40.8%,而MD-PhD的PI增加了64% (15.2%至24.9%).
- 在MD PIs中,临床认证和积极实践之间存在着越来越大的差距,26.6%的患者在2024年没有Medicare计费.
结论:
- 传统的MD-only手术研究领导力正在下降,MD-PhD研究者显著增加.
- 很大一部分MD PIs保持凭证没有最近的临床计费,表明潜在的断开连接.
- 学术部门应促进支持临床活跃的外科医生科学家的途径,以确保有效的双向研究翻译.
相关概念视频
Venous Return
11.8K
The circulatory system plays a crucial role in ensuring the optimal functioning of the human body. One of its critical components is venous return - the process that completes the blood circulation cycle. This article will delve into the concept of venous return, how it works, and its significance to our health.
What is Venous Return?
Venous return refers to the rate at which blood flows back to the heart from the body's peripheral veins. It's an integral part of the circulatory system...
What is Venous Return?
Venous return refers to the rate at which blood flows back to the heart from the body's peripheral veins. It's an integral part of the circulatory system...
11.8K
Bacterial Transformation
59.5K
In 1928, bacteriologist Frederick Griffith worked on a vaccine for pneumonia, which is caused by Streptococcus pneumoniae bacteria. Griffith studied two pneumonia strains in mice: one pathogenic and one non-pathogenic. Only the pathogenic strain killed host mice.
Griffith made an unexpected discovery when he killed the pathogenic strain and mixed its remains with the live, non-pathogenic strain. Not only did the mixture kill host mice, but it also contained living pathogenic bacteria that...
Griffith made an unexpected discovery when he killed the pathogenic strain and mixed its remains with the live, non-pathogenic strain. Not only did the mixture kill host mice, but it also contained living pathogenic bacteria that...
59.5K
Transformation
727
Microbial communities are dynamic environments where cell lysis releases free DNA into the surroundings. Other cells can take up this extracellular DNA through a process known as transformation.When a cell incorporates this foreign DNA into its genome, resulting in genetic modification, the process is known as transformation. Cells capable of this process are termed competent. Competence can be natural, as observed in certain bacteria and archaea, or artificially induced in the...
727
Transformers
1.7K
A device that transforms voltages from one value to another using induction is called a transformer. A transformer consists of two separate coils, or windings, wrapped around the same soft iron core. However, they are electrically insulated from each other.
The iron core has a substantial relative permeability. Therefore, the magnetic field lines generated due to the current in one winding are almost entirely confined within the core, such that the same magnetic flux permeates each turn of both...
The iron core has a substantial relative permeability. Therefore, the magnetic field lines generated due to the current in one winding are almost entirely confined within the core, such that the same magnetic flux permeates each turn of both...
1.7K
The Ideal Transformer
1.4K
In single-phase two-winding transformers, two windings are coiled around a magnetic core characterized by cross-sectional area A and magnetic permeability μ. A phasor current i1 enters the left winding while i2 exits the right winding, establishing the fundamental working of the transformer through electromagnetic principles.
Ampere's Law forms the basis of understanding the magnetic field within the transformer. It states that the integral of the magnetic field intensity's tangential...
Ampere's Law forms the basis of understanding the magnetic field within the transformer. It states that the integral of the magnetic field intensity's tangential...
1.4K
Properties of the z-Transform II
393
The property of Accumulation in signal processing is derived by analyzing the accumulated sum of a discrete-time signal and using the time-shifting property to determine its z-transform. This principle reveals that the z-transform of the summed signal is related to the z-transform of the original signal by a multiplicative factor.
Moreover, the convolution property indicates that the convolution of two signals in the time domain corresponds to the product of their z-transforms in the frequency...
Moreover, the convolution property indicates that the convolution of two signals in the time domain corresponds to the product of their z-transforms in the frequency...
393

