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相关概念视频

Osmoregulation in Fishes02:32

Osmoregulation in Fishes

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When cells are placed in a hypotonic (low-salt) fluid, they can swell and burst. Meanwhile, cells in a hypertonic solution—with a higher salt concentration—can shrivel and die. How do fish cells avoid these gruesome fates in hypotonic freshwater or hypertonic seawater environments?
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Quantifying Work

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As a system undergoes a change, its internal energy can change, and energy can be transferred from the system to the surroundings, or from the surroundings to the system.
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Sound Intensity00:58

Sound Intensity

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The loudness of a sound source is related to how energetically the source is vibrating, consequently making the molecules of the propagation medium vibrate. To measure the loudness of a source, the physical quantity of interest is the intensity. This is defined as the energy emitted per unit of time per unit of area perpendicular to the sound wave's propagation direction. Since the total energy is greater if the source vibrates for a longer duration and over a larger area, dividing the...
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Sound Intensity Level00:53

Sound Intensity Level

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Humans perceive sound by hearing. The human ear helps sound waves reach the brain, which then interprets the waves and creates the perception of hearing. The loudness of the environment in which a person is located determines whether they can distinguish between different sound sources.
The human ear can perceive an extensive range of sound intensity, necessitating the use of the logarithmic scale to define a physical quantity—the intensity level. It is a ratio of two intensities and...
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Intensity Of Electromagnetic Waves01:22

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The energy transport per unit area per unit time, or the Poynting vector, gives the energy flux of an electromagnetic wave at any specific time. For a plane electromagnetic wave with E0 and B0 as the peak electric and magnetic fields and traveling along the x-axis, the time-varying energy flux can be given by the following equation:
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Intensity and Pressure of Sound Waves01:05

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The intensity of sound waves can be related to displacement and pressure amplitudes by using their wave expressions and the definition of intensity. The critical step to achieve this is to write the power delivered by the particles on the wave as the product of force and velocity and simplify the force per unit area as the pressure. The velocity of the medium's particles can be derived from the displacement.
Unlike the time average of a sinusoidal term, which is zero since it is positive...
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相关实验视频

Updated: Feb 14, 2026

Assessing Mineral Availability in Fish Feeds using Complementary Methods Demonstrated with the Example of Zinc in Atlantic Salmon
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一种基于YOLO-PEGA的轻量级方法,用于量化鱼类养强度.

Xinyu Ai1,2, Shengmao Zhang1, Shenglong Yang1

  • 1Key Laboratory of Fisheries Remote Sensing, Ministry of Agriculture and Rural Affairs, East China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Shanghai 200090, China.

Animals : an open access journal from MDPI
|February 13, 2026
PubMed
概括
此摘要是机器生成的。

这项研究引入了一种新的AI模型,通过分析水来监测鱼的养行为. 这项技术优化了养时间表,减少了浪费,提高了水产养殖的可持续性.

关键词:
在YOLO11上,你会发现YOLO11是什么意思.注意力机制注意力机制养强度 养强度 养强度大大的黄色的croaker.

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科学领域:

  • 水产养殖技术 水产养殖技术
  • 计算机视觉在农业中的应用
  • 动物行为分析 动物行为分析

背景情况:

  • 在水产养殖中,手动或固定时间表的鱼类养往往导致过度养,导致料浪费和水污染.
  • 鱼类的养行为,比如跳跃和竞争,会产生可以表明饥饿程度的喷.

研究的目的:

  • 开发一种自动化系统,使用计算机视觉来监测鱼类养强度.
  • 提高水产养殖业务的效率和环境可持续性.

主要方法:

  • 为培训构建了一个框架级的喷注释数据集.
  • 开发了一种经过修改的YOLO11模型 (YOLO11-PEGA),具有增强的小喷雾识别和高效的减量采样.
  • 将EGMA和一个ADown运营商纳入模型架构.

主要成果:

  • 在验证集上,YOLO11-PEGA模型实现了高精度 (0.86) 和回忆 (0.80).
  • 实现了mAP@0.5>0.80和mAP@0.5-0.95>0.30. 这两种情况.
  • 与基线相比,模型参数数量减少了72.3%,表明效率有所提高.

结论:

  • 拟议的YOLO11-PEGA模型在复杂环境中提供稳定的检测性能.
  • 为优化水产养殖中的养门,时间和数量提供了有价值的数据.
  • 通过自动化监测支持更高效和可持续的水产养殖实践.