centrifugation

简明释义

英[sentrɪfjʊˈɡeɪʃən]美[sentrɪfjuˈɡeɪʃn]

n. 离心分离

英英释义

单词用法

同义词

反义词

例句

1.Velocity and isopyknic gradient centrifugation was employed to fractionate rat myocardial nuclei.

大鼠心肌细胞核采用差速离心和密度梯度离心分离提纯。

2.The latex concentration is raised by evaporation or centrifugation.

通过挥发或离心作用提高胶乳的浓度。

3.In this study, the gametocytes of Leucocytozoon caulleryi were isolated from blood of diseased chickens by density gradient centrifugation.

的分离液，并通过无菌采集患卡氏住白细胞虫病的病鸡血液获得了卡氏住白细胞虫的配子体。

4.After the last drug, the drug serum and the blank serum were separated from heart blood by centrifugation.

末次给药后无菌心脏取血，离心分离出含药血清和空白血清。

5.BM MNCs were isolated from long bone of limbs in healthy Lewis rats by centrifugation through a histopaque density gradient.

骨髓单个核细胞取自同系健康大鼠的四肢长骨，用密度梯度离心法获得。

6.Not need heating, pumping, high - speed centrifugation, low operation fee.

不需要加热抽真空和高速离心，能耗低，运行费用低。

7.White Spot Syndrome Virus (WSSV) was purified by sucrose density gradient centrifugation, and then labeled by FLUOS.

采用蔗糖梯度离心方法提取对虾的白斑综合症病毒(WSSV)，用荧光素对病毒进行标记。

8.In the laboratory, we used centrifugation to separate the blood components for analysis.

在实验室中，我们使用离心分离来分离血液成分以进行分析。

9.The centrifugation process helped us isolate the DNA from the cell lysate.

这个离心分离过程帮助我们从细胞裂解液中分离出DNA。

10.During the experiment, centrifugation was crucial for obtaining a clear supernatant.

在实验过程中，离心分离对于获得清晰的上清液至关重要。

11.We performed centrifugation at different speeds to determine the optimal conditions for protein separation.

我们以不同的速度进行离心分离，以确定蛋白质分离的最佳条件。

12.The centrifugation technique is widely used in clinical laboratories for urine sample processing.

在临床实验室中，离心分离技术被广泛用于尿液样本处理。

作文

Centrifugation is a fundamental technique used in laboratories and various industries to separate components of different densities within a mixture. This process involves the application of centrifugal force, which is generated by spinning a sample at high speeds. During this action, denser materials move outward to the bottom of the container, while lighter substances remain closer to the top. The effectiveness of centrifugation (离心分离) lies in its ability to rapidly and efficiently separate particles, making it an invaluable tool in fields such as biology, chemistry, and medicine. In biological research, centrifugation (离心分离) is commonly employed to isolate cellular components, such as organelles, proteins, and nucleic acids. For example, when isolating DNA from cells, researchers often use a series of centrifugation steps to separate the cellular debris from the desired genetic material. The process begins with cell lysis, where the cell membrane is broken down, releasing its contents into a solution. Following this, the sample is spun in a centrifuge, allowing the heavier cellular debris to settle at the bottom, while the lighter DNA remains in the supernatant. This method not only enhances the purity of the DNA but also improves the yield for subsequent experiments. In the medical field, centrifugation (离心分离) plays a crucial role in the analysis of blood samples. Clinical laboratories utilize this technique to separate plasma or serum from whole blood, which is essential for various diagnostic tests. When a blood sample is centrifuged, the red blood cells, white blood cells, and platelets settle at the bottom, while the liquid component, which contains important biomarkers, rises to the top. This separation allows healthcare professionals to conduct accurate tests and monitor patients' health effectively. Furthermore, centrifugation (离心分离) is not limited to biological applications; it is also widely used in industrial processes. For instance, in the food industry, centrifugation (离心分离) can be utilized to separate cream from milk. By spinning the milk at high speeds, the fat globules rise to the surface, allowing for easy extraction of cream. This method not only streamlines production but also ensures a consistent quality of dairy products. Despite its many advantages, there are some limitations to centrifugation (离心分离). One significant challenge is that the effectiveness of the separation depends on the differences in density between the components being separated. If the density differences are minimal, achieving a clear separation may be difficult. Additionally, excessive centrifugal force can damage sensitive biological samples, leading to degradation or loss of function. Therefore, it is crucial for researchers and technicians to optimize the speed and duration of the centrifugation process based on the specific requirements of their samples. In conclusion, centrifugation (离心分离) is a powerful and versatile technique that has revolutionized many scientific and industrial processes. From isolating cellular components in the laboratory to separating blood components in clinical settings, its applications are vast and varied. As technology advances, the efficiency and capabilities of centrifugation (离心分离) continue to improve, paving the way for new discoveries and innovations in science and industry.