sedimentation coefficient

简明释义

沉降系数

英英释义

例句

1.The sedimentation coefficient can indicate the purity of a sample by assessing particle size distribution.

沉降系数 通过评估颗粒大小分布可以指示样品的纯度。

2.Researchers used the sedimentation coefficient to analyze the behavior of colloidal solutions.

研究人员使用 沉降系数 来分析胶体溶液的行为。

3.The sedimentation coefficient measures how quickly particles settle in a fluid.

沉降系数 衡量颗粒在流体中沉降的速度。

4.In biochemistry, the sedimentation coefficient is crucial for determining the size of macromolecules.

沉降系数 在生物化学中对确定大分子的大小至关重要。

5.A higher sedimentation coefficient suggests larger or denser particles in a solution.

较高的 沉降系数 表明溶液中存在较大或较密的颗粒。

作文

The study of sedimentation is a crucial aspect of various scientific fields, including biology, chemistry, and environmental science. One of the key parameters used to describe the behavior of particles in a fluid is the sedimentation coefficient. The sedimentation coefficient (沉降系数) quantifies how fast a particle settles under the influence of gravity in a given medium. This coefficient is essential for understanding processes such as the separation of cellular components in centrifugation and the behavior of pollutants in aquatic environments.To comprehend the significance of the sedimentation coefficient, it is important to consider its relationship with particle size, shape, and density. Larger and denser particles tend to have higher sedimentation coefficients because they experience greater gravitational forces, which propel them downward more rapidly than smaller or less dense particles. For instance, in a laboratory setting, when researchers separate proteins using centrifugation, they rely on the sedimentation coefficient to predict how quickly different proteins will settle based on their physical characteristics.Moreover, the sedimentation coefficient is not only influenced by the characteristics of the particles but also by the properties of the surrounding fluid. The viscosity of the medium plays a significant role; in more viscous fluids, particles will settle more slowly, resulting in lower sedimentation coefficients. Therefore, understanding the interplay between particle and fluid properties is vital for accurate predictions in various applications.In environmental science, the sedimentation coefficient is critical for assessing the fate of contaminants in water bodies. For example, heavy metals and other pollutants can bind to sediments and settle at the bottom of rivers and lakes. By studying the sedimentation coefficient of these contaminants, scientists can determine how long they will remain suspended in the water column versus how quickly they will settle and potentially become trapped in sediments. This information is essential for evaluating the ecological risks associated with pollution and for designing effective remediation strategies.In conclusion, the sedimentation coefficient is a fundamental concept that bridges various scientific disciplines. Its application ranges from laboratory research to environmental monitoring. By understanding the factors that influence the sedimentation coefficient and its implications, scientists can make informed decisions in both research and practical applications. As we continue to explore the complexities of particle behavior in fluids, the importance of the sedimentation coefficient will undoubtedly remain a focal point in scientific inquiry and innovation.

沉降是生物学、化学和环境科学等多个科学领域的重要研究内容。描述粒子在流体中行为的关键参数之一是沉降系数。沉降系数（sedimentation coefficient）量化了粒子在特定介质中受重力影响下的沉降速度。这个系数对于理解离心分离细胞成分和污染物在水环境中的行为等过程至关重要。要理解沉降系数的重要性，必须考虑其与粒子大小、形状和密度之间的关系。较大且密度较高的粒子通常具有较高的沉降系数，因为它们受到更大的重力作用，使其比小型或低密度粒子更快地向下沉降。例如，在实验室环境中，当研究人员使用离心机分离蛋白质时，他们依赖于沉降系数来预测不同蛋白质基于其物理特征的沉降速度。此外，沉降系数不仅受粒子特性的影响，还受到周围流体性质的影响。介质的粘度起着重要作用；在粘度较高的流体中，粒子的沉降速度会减慢，从而导致较低的沉降系数。因此，理解粒子与流体特性之间的相互作用对于在各种应用中进行准确预测至关重要。在环境科学中，沉降系数对评估水体中污染物的去向至关重要。例如，重金属和其他污染物可以与沉积物结合并沉降到河流和湖泊的底部。通过研究这些污染物的沉降系数，科学家可以确定它们在水柱中悬浮的时间与沉降和潜在被困在沉积物中的速度。这些信息对于评估与污染相关的生态风险和设计有效的修复策略至关重要。总之，沉降系数是一个基本概念，它连接了多个科学学科。它的应用范围从实验室研究到环境监测。通过理解影响沉降系数及其影响因素，科学家可以在研究和实际应用中做出明智的决策。随着我们继续探索粒子在流体中行为的复杂性，沉降系数的重要性无疑将继续成为科学探究和创新的焦点。