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相关概念视频

Centrifugation01:05

Centrifugation

2.3K
Centrifugation is a separation technique based on differences in density or size. It is commonly used to separate solids from aqueous interferents. During centrifugation, the sample is placed in centrifugation tubes and spun at high angular velocity, which allows centrifugal force to act differentially on the different densities or masses of the components. After spinning, the supernatant liquid is decanted. Depending on the specific application, either the pellet or the supernatant is retained...
2.3K
Boundary Layer Characteristics01:18

Boundary Layer Characteristics

171
When a fluid encounters a solid surface, a boundary layer forms due to the interaction between the fluid's motion and the stationary surface. This phenomenon is characterized by a thin region adjacent to the surface where viscous forces dominate, influencing the fluid's velocity profile. The development of the boundary layer begins at the leading edge of the surface and evolves as the fluid moves downstream.As the fluid flows over the surface, friction between the fluid and the wall slows down...
171
Optimizing Chromatographic Separations01:15

Optimizing Chromatographic Separations

433
Optimizing chromatographic separations is crucial for obtaining clean separations in a minimum amount of time. Optimization is required for several factors, including kinetic effects related to band broadening, plate height, capacity factor, and separation factor.
Band broadening refers to spreading solute bands as they travel through the column. This broadening can impact resolution. Plate height (H) represents the length required for one theoretical plate. A lower plate height corresponds to...
433
Filtration00:53

Filtration

854
Filtration is a physical separation process that involves passing a suspension through a porous medium to separate solids from fluids. During filtration, solids collect on the porous medium while liquids, also collectively known as the filtrate, pass through. The filtration medium is selected based on the filtration purpose, quantity, and nature of the precipitate. The general criteria for a suitable filtering medium are that it is inert, mechanically strong, nonabsorbent toward dissolved...
854
Steady, Laminar Flow Between Parallel Plates01:17

Steady, Laminar Flow Between Parallel Plates

222
Understanding steady, laminar flow between parallel plates is essential for analyzing and designing flow in narrow rectangular channels, commonly found in various water conveyance and drainage systems. The Navier-Stokes equations govern fluid motion and are generally challenging to solve due to their nonlinearity. However, simplifications are possible in certain cases, like the steady laminar flow between parallel plates. For this scenario, we assume steady, incompressible, laminar flow.
222
General External Flow Characteristics01:26

General External Flow Characteristics

220
The study of external flow is essential for creating structures and objects that interact efficiently and safely with moving fluids, such as air or water. When a body is immersed in a flowing fluid, it experiences two primary forces: drag, which opposes motion along the flow direction, and lift, which acts perpendicular to the flow. The shape, size, and orientation of the object influence these forces.Streamlined and Blunt Bodies in External FlowObjects in fluid flow are classified as...
220

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相关实验视频

Updated: Jul 15, 2025

Investigating the Three-dimensional Flow Separation Induced by a Model Vocal Fold Polyp
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风分离:一个审查

Jimmy Alade1,2, Samson Oluwaseyi Bada1,2

  • 1DSI-NRF SARChI Clean Coal Technology Research Group, Faculty of Engineering and the Built Environment, University of the Witwatersrand, Wits 2050, Johannesburg, South Africa.

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|October 2, 2023
PubMed
概括
此摘要是机器生成的。

风提供了一种有效,环保的干颗粒分类方法. 本综述详细介绍了风的类型,设计和操作原则,解决了现有文献中的差距.

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相关实验视频

Last Updated: Jul 15, 2025

Investigating the Three-dimensional Flow Separation Induced by a Model Vocal Fold Polyp
09:58

Investigating the Three-dimensional Flow Separation Induced by a Model Vocal Fold Polyp

Published on: February 3, 2014

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Experimental Investigation of the Flow Structure over a Delta Wing Via Flow Visualization Methods
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科学领域:

  • 工程 工程师 工程师 工程师
  • 材料科学 是一种材料科学.
  • 环境科学 环境科学

背景情况:

  • 干燥颗粒分类是一种低成本和环保的替代潮湿方法.
  • 风选原理利用粒子属性,如大小,形状和密度进行分离.
  • 风机在各个行业都有不同的应用,包括废物管理和矿物加工.

研究的目的:

  • 为了提供关于风-sifter 的文献评论.
  • 详细介绍三个主要类型的风扇.
  • 解释它们的通用设计特征和操作原则.

主要方法:

  • 关于风力选现有研究的文献评论.
  • 分析不同风的配置和应用.
  • 综合关于设计特征和操作机制的信息.

主要成果:

  • 确定风作为一种强大的颗粒分离技术.
  • 将风分为三个主要类型.
  • 概述了有效的粒子分类的共同设计元素和操作原则.

结论:

  • 风是一种多功能和成熟的技术,用于干燥颗粒的分类.
  • 由于现有的文献有限,需要进一步研究.
  • 本综述是理解风技术的基础资源.