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相关概念视频

The Respiratory System01:16

The Respiratory System

89.1K
The respiratory system is comprised of the organs that enable breathing. Air enters the nostrils and mouth, followed by the pharynx (throat) and larynx (voice box), which lead to the trachea (windpipe). In the thoracic cavity, the trachea splits into two bronchi that allow air to enter the lungs. The bronchi split into progressively smaller bronchioles and terminate in small groups of tiny sacs in the lungs called alveoli, where gas exchange occurs.
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Assessment of Respiration01:23

Assessment of Respiration

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The respiratory system's basic structures and primary functions lay the foundation for nurses' comprehensive respiratory assessments. This assessment includes subjective and objective data to gauge the patient's respiratory health.
Subjective Assessment: Nurses interview the patient to gather information directly during the subjective assessment. It includes questions about the individual's medical history, medications, and symptoms, focusing on past respiratory conditions like...
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Effects of moisture content on temperature stability and microbial population growth over time in a dry cow total mixed ration.

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Investigation of vehicles as potential pathways for between-farm transmission of influenza A virus in US dairy herds.

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相关实验视频

Updated: Jan 18, 2026

High-Resolution Respirometry in a Small-Volume Chamber
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High-Resolution Respirometry in a Small-Volume Chamber

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一个专为小反动物设计的呼吸计系统.

C S Silva1, J Diavão1, E F Motta1

  • 1Brazilian Agricultural Research Corporation, Juiz de Fora, Minas Gerais, Brazil, 36038-330.

JDS communications
|September 9, 2025
PubMed
概括
此摘要是机器生成的。

一个新的呼吸室系统准确地测量了小反动物的温室气体排放. 这项技术有助于了解畜牧业.

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The Use of an Automated System GreenFeed to Monitor Enteric Methane and Carbon Dioxide Emissions from Ruminant Animals
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Isolated Lung Perfusion System in the Rabbit Model
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相关实验视频

Last Updated: Jan 18, 2026

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The Use of an Automated System GreenFeed to Monitor Enteric Methane and Carbon Dioxide Emissions from Ruminant Animals
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Isolated Lung Perfusion System in the Rabbit Model
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科学领域:

  • 农业科学 农业科学
  • 环境科学 环境科学
  • 动物科学动物科学

背景情况:

  • 准确量化来自畜牧业的温室气体 (GHG) 排放对于环境可持续性至关重要.
  • 小杂动物,包括牛,山羊和绵羊,对农业温室气体产量做出了重大贡献.
  • 现有的测量系统可能需要改进,以便在小反动物种群中精确评估温室气体.

研究的目的:

  • 描述和验证一种新的呼吸室系统,用于量化小型反动物的二氧化碳 (CO2) 和甲 (CH4) 生产.
  • 通过气体回收测试来评估开发系统的准确性和可靠性.

主要方法:

  • 开发一个带有集成流量计,气体分析仪和环境控制的三室开放循环呼吸系统.
  • 气体回收试验包括在所有室内以多个恒定流量注入CO2和CH4.
  • 对回收百分比的统计分析,以确定系统的准确性.

主要成果:

  • 该系统在量化CO2和CH4产量方面表现出高度准确性,平均回收率在97.8%到104.1%之间.
  • 回收测试证实了该系统能够准确地测量所有三个室内的气体度.
  • 经过验证的系统已被证明对小型反动物的畜牧业温室气体排放量定量有效.

结论:

  • 描述的呼吸室系统是涉及小反动物的营养和环境研究的可行方法.
  • 这项技术有助于更深入地了解小反动物生产中温室气体排放动态.
  • 未来使用该系统的研究可以为提高小反动物养殖可持续性的策略提供信息.