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相关概念视频

Plasticizers01:31

Plasticizers

56
Water-reducers, or plasticizers, are chemical admixtures used in concrete to improve strength and workability. These additives reduce the water-cement ratio without compromising workability, lower the cement content while maintaining the same workability, or increase workability to assist concrete placement in inaccessible areas.
Plasticizers function by using surface-active agents to create repulsive electrostatic forces between cement particles. This dispersion enhances the concrete's...
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Factors Affecting Dissolution: Drug Permeability, Stability and Stereochemistry01:20

Factors Affecting Dissolution: Drug Permeability, Stability and Stereochemistry

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Orally administered drugs primarily enter the systemic circulation via passive diffusion through the intestinal membranes. The drug's absorption is influenced by drug stability in the gastrointestinal GI tract, membrane permeability, the surface area available for absorption, luminal drug concentration, and residence time in the lumen. Drug permeability can be enhanced by adjusting the lipophilicity, polarity, or molecular size of the drug, promoting its passive transport across intestinal...
156
Superplasticizers01:30

Superplasticizers

72
Superplasticizers are advanced admixtures that enhance the workability of concrete by lowering the water content without compromising the strength of the material. These substances are highly effective water reducers, improving concrete flow, making it easier to work with, and enabling concrete to reach inaccessible areas or densely reinforced sections without mechanical vibration. The key components in superplasticizers are either sulfonated melamine or naphthalene formaldehyde condensates,...
72
Design Example: Sustainability in Concrete Building01:26

Design Example: Sustainability in Concrete Building

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As the construction industry moves towards more eco-friendly practices, concrete's adaptability and its ability to incorporate sustainable features make it a key material in the drive towards greener building solutions.
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground...
144
Design Example: Analyzing Capacity Contours for Flood Risk Assessment01:17

Design Example: Analyzing Capacity Contours for Flood Risk Assessment

31
Flood risk assessment involves careful planning and analysis to ensure the safety of communities near water retention structures. Capacity contours are a vital tool in this process, as they illustrate the potential spread of water at specific levels in a given area. In the context of building a bund across a small valley, these contours play a critical role in evaluating the safety of nearby residential areas.In this example, the bund is intended to store stormwater in the valley. The engineers...
31
Effects of Air-entrainment in Concrete01:28

Effects of Air-entrainment in Concrete

71
Air entrainment in concrete significantly enhances the material's durability, especially in environments subjected to freeze-thaw cycles. Introducing small air bubbles into the concrete mix acts as internal voids that accommodate the expansion of water when it freezes, thereby alleviating internal stress and preventing structural cracks. This function is crucial in climates with significant freezing and thawing, as it protects the concrete from repeated stresses that could lead to premature...
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缓解集装箱损坏和提高全球集装箱化运营效率.

Sergej Jakovlev1,2, Tomas Eglynas2, Mindaugas Jusis2

  • 1Department of Telecommunications, VSB-Technical University of Ostrava, 17. listopadu 2172/15, 708 00 Ostrava-Poruba, Czech Republic.

Sensors (Basel, Switzerland)
|April 12, 2025
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概括
此摘要是机器生成的。

在港口处理过程中对集装箱的损坏是一个主要问题. 一种新的冲击检测方法 (IDM) 在实时监测方面显示出有希望,以提高集装箱运营中的安全性和降低成本.

关键词:
加速加速加速的加速.处理过程 处理过程 处理过程影响检测方法的方法论.运输运输运输运输运输运输运输运输振动 振动 振动是一种振动.

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相关实验视频

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科学领域:

  • 海上物流的海上物流
  • 机械工程 机械工程
  • 供应链管理 供应链管理

背景情况:

  • 全球集装箱化推动了国际贸易,但也面临着运营方面的挑战.
  • 在港口处理过程中对集装箱的物理损坏,特别是从码头起重机操作 (如角) 造成的损坏,是研究不足的一个重大问题.
  • 这些损坏影响了集装箱的完整性,货物的安全性,并造成了大量的运营成本.

研究的目的:

  • 检查集装箱处理和相关损坏的复杂性.
  • 引入和评估影响检测方法 (IDM) 进行实时影响监测.
  • 确定导致处理错误的因素,并提出缓解策略.

主要方法:

  • 开发和初步测试冲击检测方法 (IDM).
  • 分析码头起重机运行期间发生的集装箱损坏事件,重点关注角落.
  • 调查散布器振荡和操作工作负载等因素对处理成功的影响.
  • 探索将摇摆控制系统与起重机管理技术相结合.

主要成果:

  • 克莱佩达城港的初步研究表明,IDM在探测冲击方面的有效性.
  • 发现,在甲板上方的升降机中,由于扩散器振荡和高工作负载的影响,未成功的挂尝试更为常见.
  • 预先研究中的有限数据需要更广泛的实验来充分验证.

结论:

  • 撞击检测方法 (IDM) 显示了提高集装箱处理操作精度和安全性的潜力.
  • 整合摇摆控制系统可以帮助操作员减少处理错误.
  • 进一步的研究和更广泛的实验对于验证IDM在减轻集装箱损坏和支持可持续集装箱化的能力至关重要.