labelled atom

简明释义

示踪原子

英英释义

例句

1.The labelled atom 标记原子 method allowed for precise measurements in the study of chemical reactions.

该labelled atom 标记原子方法使化学反应研究中的精确测量成为可能。

2.In a chemistry experiment, we used a labelled atom 标记原子 of carbon-14 to trace the metabolic pathways.

在一次化学实验中，我们使用了一个碳-14的labelled atom 标记原子来追踪代谢途径。

3.We conducted an experiment with a labelled atom 标记原子 of nitrogen to observe its role in protein synthesis.

我们进行了一个氮的labelled atom 标记原子实验，以观察其在蛋白质合成中的作用。

4.The researchers introduced a labelled atom 标记原子 of oxygen to study its absorption in plants.

研究人员引入了一个氧的labelled atom 标记原子来研究其在植物中的吸收。

5.Using a labelled atom 标记原子 technique, scientists were able to track the movement of nutrients in the soil.

利用labelled atom 标记原子技术，科学家们能够追踪土壤中养分的运动。

作文

In the field of chemistry and physics, the concept of a labelled atom is crucial for understanding molecular structures and interactions. A labelled atom refers to an atom that has been tagged with a specific marker, often a stable isotope or a radioactive isotope, to track its behavior in various chemical reactions or biological systems. This technique is widely used in research to gain insights into complex processes that are otherwise difficult to observe directly.For instance, scientists often utilize labelled atoms in experiments involving metabolic pathways. By introducing a labelled atom, such as carbon-13, into a biological system, researchers can trace the incorporation of that atom into different molecules during metabolism. This allows them to map out metabolic pathways and understand how organisms utilize nutrients, which is essential for fields like biochemistry and medicine.Moreover, the use of labelled atoms extends beyond biology. In materials science, researchers may employ labelled atoms to study diffusion processes within solids. By using isotopes that are distinguishable from their natural counterparts, scientists can monitor how atoms move through materials over time. This information is vital for developing new materials with desired properties, such as improved conductivity or strength.The technique of using labelled atoms also plays a significant role in environmental studies. For example, tracking the movement of pollutants in ecosystems can be achieved by using labelled atoms. By tagging certain pollutants with isotopes, researchers can follow their paths through soil, water, and air, helping to assess their impact on the environment and human health.Furthermore, the application of labelled atoms is not limited to experimental research. It has practical implications in medical imaging and diagnostics. Positron emission tomography (PET) scans, for instance, utilize labelled atoms to visualize metabolic activity in tissues. By injecting a patient with a radioactive glucose analogue, doctors can obtain images that reveal areas of high metabolic activity, which may indicate the presence of tumors or other abnormalities.In conclusion, the concept of the labelled atom is a powerful tool in various scientific disciplines. Its ability to provide detailed information about atomic behavior and interactions makes it invaluable for research and practical applications alike. As technology advances, the methods for creating and utilizing labelled atoms will continue to evolve, leading to even greater discoveries and innovations in science and medicine. Understanding the significance of labelled atoms is essential for anyone interested in the intricacies of chemistry, biology, and environmental science.

在化学和物理学领域，标记原子的概念对于理解分子结构和相互作用至关重要。标记原子是指用特定标记（通常是稳定同位素或放射性同位素）标记的原子，以跟踪其在各种化学反应或生物系统中的行为。这种技术在研究中被广泛应用，以深入了解复杂过程，这些过程在直接观察时往往很困难。例如，科学家们常常在涉及代谢途径的实验中使用标记原子。通过将标记原子（如碳-13）引入生物系统，研究人员可以追踪该原子在代谢过程中如何被不同分子吸收。这使他们能够绘制代谢途径，并了解生物体如何利用营养，这对于生物化学和医学等领域至关重要。此外，标记原子的使用不仅限于生物学。在材料科学中，研究人员可能会利用标记原子来研究固体中的扩散过程。通过使用与其自然同位素可区分的同位素，科学家们可以监测原子随时间在材料中的移动。这些信息对于开发具有所需特性的新能源材料（如提高导电性或强度）至关重要。使用标记原子的技术在环境研究中也发挥着重要作用。例如，通过使用标记原子跟踪生态系统中污染物的运动。通过用同位素标记某些污染物，研究人员可以追踪它们在土壤、水和空气中的路径，帮助评估它们对环境和人类健康的影响。此外，标记原子的应用不仅限于实验研究。在医学成像和诊断中也具有实际意义。例如，正电子发射断层扫描（PET）利用标记原子可视化组织中的代谢活动。通过向患者注入放射性葡萄糖类似物，医生可以获得显示高代谢活动区域的图像，这可能表明肿瘤或其他异常的存在。总之，标记原子的概念是各个科学学科中一种强大的工具。它提供的关于原子行为和相互作用的详细信息使其在研究和实际应用中都具有不可或缺的价值。随着技术的进步，创建和利用标记原子的方法将继续发展，推动科学和医学领域的更多发现和创新。理解标记原子的重要性是任何对化学、生物学和环境科学复杂性感兴趣的人都必须掌握的知识。