ultracentrifuge

简明释义

英[ʌltrəˈsentrɪfjuːdʒ]美[ˌʌltrəˈsentrəˌfjʊdʒ]

n. 超速离心机

v. 超速分离，用超速离心机分离

复 数 u l t r a c e n t r i f u g e s

第 三 人 称 单 数 u l t r a c e n t r i f u g e s

现 在 分 词 u l t r a c e n t r i f u g i n g

过 去 式 u l t r a c e n t r i f u g e d

过 去 分 词 u l t r a c e n t r i f u g e d

英英释义

单词用法

同义词

反义词

例句

1.The encapsulation efficiency and drug loading of triptolide-loaded poly (d, L-lactic acid) nanoparticles were analyzed by RP-HPLC and ultracentrifuge method in this study.

本文研究了反相高效液相色谱和超速冷冻离心测定雷公藤甲素聚乳酸纳米粒包封率和载药量的方法。

2.The encapsulation efficiency and drug loading of triptolide-loaded poly (d, L-lactic acid) nanoparticles were analyzed by RP-HPLC and ultracentrifuge method in this study.

本文研究了反相高效液相色谱和超速冷冻离心测定雷公藤甲素聚乳酸纳米粒包封率和载药量的方法。

3.An ultracentrifuge is essential for purifying proteins from complex mixtures.

在从复杂混合物中提取蛋白质时，超离心机是必不可少的。

4.After the experiment, we placed the samples in the ultracentrifuge for further analysis.

实验结束后，我们将样品放入超离心机中进行进一步分析。

5.Using an ultracentrifuge, we can isolate organelles from the cell lysate effectively.

利用超离心机，我们可以有效地从细胞裂解液中分离细胞器。

6.The researcher calibrated the ultracentrifuge to ensure accurate separation of the particles.

研究人员校准了超离心机以确保颗粒的准确分离。

7.The lab uses an ultracentrifuge to separate cellular components based on their density.

实验室使用超离心机根据细胞成分的密度进行分离。

作文

The field of biochemistry has seen remarkable advancements in recent decades, particularly with the development of sophisticated laboratory equipment. One of the most important tools in this realm is the ultracentrifuge, which plays a crucial role in the separation and analysis of biological macromolecules. An ultracentrifuge (超离心机) is a device that uses high rotational speeds to generate strong centrifugal forces, allowing scientists to separate components of a mixture based on their density. This technology has been instrumental in various applications, including protein purification, DNA extraction, and the study of cell organelles.The principle behind the ultracentrifuge is relatively simple yet powerful. When a sample is placed in the rotor of the centrifuge and spun at high speeds, the denser components move outward, while lighter components remain closer to the center. This separation occurs because the centrifugal force acts more strongly on heavier particles, causing them to sediment faster than lighter ones. As a result, researchers can isolate specific components from complex mixtures, enabling detailed analysis and experimentation.One of the significant advantages of using an ultracentrifuge (超离心机) is its ability to achieve extremely high speeds, often exceeding 100,000 revolutions per minute (RPM). This capability allows for the separation of very small particles, such as viruses or ribosomes, which are essential for various scientific studies. Moreover, the versatility of the ultracentrifuge makes it suitable for a wide range of applications across different fields, including microbiology, molecular biology, and biophysics.In molecular biology, for instance, the ultracentrifuge is frequently used to purify plasmids and other nucleic acids. By separating these molecules from proteins and cellular debris, researchers can obtain high-quality samples necessary for cloning, sequencing, and other genetic analyses. Additionally, in the study of cellular structures, the ultracentrifuge allows scientists to isolate organelles like mitochondria and lysosomes, thereby facilitating the exploration of their functions and interactions within the cell.Another critical application of the ultracentrifuge (超离心机) is in the field of medicine, particularly in the preparation of blood components. For example, in blood banks, an ultracentrifuge is used to separate red blood cells, plasma, and platelets, which can then be transfused to patients in need. This separation process is vital for ensuring that patients receive the appropriate components for their treatment, enhancing the effectiveness of medical care.Despite its many benefits, working with an ultracentrifuge requires careful consideration of safety protocols. The high speeds involved can pose risks if not handled properly. Therefore, laboratory personnel must be trained in the correct usage and maintenance of the equipment to prevent accidents and ensure reliable results.In conclusion, the ultracentrifuge (超离心机) is an indispensable tool in modern scientific research, enabling the separation and analysis of biological materials with precision and efficiency. Its applications span various fields, from basic research to clinical practices, highlighting its significance in advancing our understanding of biology and medicine. As technology continues to evolve, the ultracentrifuge will undoubtedly remain a cornerstone of laboratory techniques, driving innovation and discovery in the life sciences.

生物化学领域在近几十年中取得了显著进展，尤其是在实验室设备的开发方面。其中一个重要的工具就是超离心机，它在生物大分子的分离和分析中发挥着至关重要的作用。超离心机是一种利用高速旋转产生强大的离心力的设备，使科学家能够根据密度分离混合物的成分。这项技术在多种应用中发挥了重要作用，包括蛋白质纯化、DNA提取以及细胞器的研究。超离心机的原理相对简单但功能强大。当样品放置在离心机的转子中并以高速度旋转时，密度较大的成分向外移动，而较轻的成分则保持靠近中心。由于离心力对较重颗粒的作用更强，因此它们沉降的速度比较轻颗粒快。因此，研究人员可以从复杂的混合物中分离出特定成分，从而进行详细的分析和实验。使用超离心机（超离心机）的一个显著优势是其能够达到极高的速度，通常超过每分钟100,000转（RPM）。这种能力使得分离非常小的颗粒，如病毒或核糖体成为可能，这些颗粒对于各种科学研究至关重要。此外，超离心机的多功能性使其适用于不同领域的广泛应用，包括微生物学、分子生物学和生物物理学。例如，在分子生物学中，超离心机常用于纯化质粒和其他核酸。通过将这些分子与蛋白质和细胞碎片分离，研究人员可以获得进行克隆、测序和其他遗传分析所需的高质量样本。此外，在细胞结构的研究中，超离心机使科学家能够分离线粒体和溶酶体等细胞器，从而促进对它们在细胞内功能和相互作用的探索。超离心机（超离心机）另一个关键应用是在医学领域，特别是在血液成分的制备中。例如，在血库中，超离心机用于分离红细胞、血浆和血小板，这些成分可以输给需要的患者。这一分离过程对于确保患者接受适当的治疗成分至关重要，提升了医疗护理的有效性。尽管有许多好处，但使用超离心机时需要仔细考虑安全协议。涉及的高速如果处理不当可能会带来风险。因此，实验室人员必须接受有关设备正确使用和维护的培训，以防止事故并确保可靠的结果。总之，超离心机（超离心机）是现代科学研究中不可或缺的工具，能够精确高效地分离和分析生物材料。其应用涵盖多个领域，从基础研究到临床实践，突显了其在推动我们对生物学和医学理解方面的重要性。随着技术的不断发展，超离心机无疑将继续作为实验室技术的基石，推动生命科学中的创新和发现。