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相关概念视频

Global Climate Change01:50

Global Climate Change

28.9K
Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
28.9K
Lung Capacity01:47

Lung Capacity

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The air in the lungs is measured in volumes and capacities. Lung volume measures reflect the amount of air taken in, released, or left over after a lung function, like a single inhalation. Lung capacity measures are sums of two or more lung volume measures.
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Work Done During Volume Change01:17

Work Done During Volume Change

5.1K
In mechanics, work is done on an object when the force acting on it displaces the object. In thermodynamics, work done on a system can be estimated when the system's volume changes during any thermodynamic process.
Consider a gas confined to a cylinder fitted with a movable piston at one end. If the gas expands from volume V1 to volume V2, it exerts a force on the piston, such that the piston moves by a distance dr.
The work done by the gas on the piston can be expressed as
5.1K
Net Change Theorem01:22

Net Change Theorem

68
The Net Change Theorem is a fundamental principle in calculus that establishes a direct relationship between a function’s rate of change and its accumulated change over an interval. Mathematically, it states that the definite integral of a function's derivative over a given interval [a,b] yields the net change in the original function:This theorem has significant applications in various real-world scenarios, including physics, economics, and engineering. A particularly useful application...
68
Standard Entropy Change for a Reaction03:00

Standard Entropy Change for a Reaction

24.2K
Entropy is a state function, so the standard entropy change for a chemical reaction (ΔS°rxn) can be calculated from the difference in standard entropy between the products and the reactants.
24.2K
Le Chatelier's Principle: Changing Temperature02:19

Le Chatelier's Principle: Changing Temperature

35.3K
Consistent with the law of mass action, an equilibrium stressed by a change in concentration will shift to re-establish equilibrium without any change in the value of the equilibrium constant, K. When an equilibrium shifts in response to a temperature change, however, it is re-established with a different relative composition that exhibits a different value for the equilibrium constant.
To understand this phenomenon, consider the elementary reaction:
35.3K

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相关实验视频

Updated: Jan 28, 2026

Real-time X-ray Imaging of Lung Fluid Volumes in Neonatal Mouse Lung
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Real-time X-ray Imaging of Lung Fluid Volumes in Neonatal Mouse Lung

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肺癌 - - 改变习惯的时候到了.

Ana Rodrigues1,2, Nuno Coimbra2,3,4, Inês Lucena Sampaio5

  • 1Department of Medical Oncology, Portuguese Oncology Institute of Porto, 4200-072 Porto, Portugal.

Current oncology (Toronto, Ont.)
|January 27, 2026
PubMed
概括
此摘要是机器生成的。

这项对肺癌类药物的研究发现了多种不同的诊断和治疗方法,突出了对标准化护理的需要. 现实世界的数据揭示了管理这些罕见的神经内分泌瘤的差距.

关键词:
肺癌类药物 肺癌类药物 肺癌类药物神经内分泌瘤的神经内分泌瘤现实世界的数据数据.这是一项回顾性研究.

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Practical Considerations in Studying Metastatic Lung Colonization in Osteosarcoma Using the Pulmonary Metastasis Assay
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A Simple Method of Mouse Lung Intubation
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Real-time X-ray Imaging of Lung Fluid Volumes in Neonatal Mouse Lung

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Practical Considerations in Studying Metastatic Lung Colonization in Osteosarcoma Using the Pulmonary Metastasis Assay
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A Simple Method of Mouse Lung Intubation
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科学领域:

  • 在瘤学瘤学.
  • 肺部病理学 肺部病理学
  • 核医学就是核医学.

背景情况:

  • 肺癌,罕见的神经内分泌瘤 (NETs),占肺癌的1-2%.
  • 临床管理通常遵循一般的肺癌协议,而不是NET特定的指导方针.

研究的目的:

  • 为了分析12年的真实世界经验与肺癌类药物.
  • 确定综合癌症中心的诊断,治疗和后续护理缺口.

主要方法:

  • 对129名患有肺癌的成年患者进行了回顾性观察队列研究.
  • 收集的数据:人口统计,临床表现,成像 (FDG-PET/CT,SSTR-PET/CT) 和治疗.
  • 收集数据的描述性分析.

主要成果:

  • 大多数患者 (65.1%) 呈现了早期疾病;17.1%的患者患有第四阶段.
  • 对于78.3%的患者来说,手术是主要的治疗方法.
  • 在诊断成像中观察到异质性,即使在典型的癌中也经常使用FDG-PET/CT.

结论:

  • 现实世界的数据显示了诊断途径的异质性和肺癌类药物的非标准化后续检查.
  • 在典型的癌中发现过度使用FDG-PET/CT.
  • 需要专门的多学科肺网委员会和参考中心来规范管理.