radioactive nuclide

简明释义

放射性核素

英英释义

例句

1.The radioactive nuclide 放射性核素 cesium-137 is commonly found in nuclear fallout.

铯-137这种放射性核素通常出现在核辐射后果中。

2.The study focused on the effects of radioactive nuclide 放射性核素 exposure on human health.

这项研究集中在放射性核素对人类健康的影响上。

3.In nuclear medicine, radioactive nuclide 放射性核素 are used for imaging and treatment.

在核医学中，放射性核素用于成像和治疗。

4.Environmental monitoring often involves measuring levels of radioactive nuclide 放射性核素 in soil and water.

环境监测通常涉及测量土壤和水中放射性核素的水平。

5.Scientists use radioactive nuclide 放射性核素 dating to determine the age of ancient artifacts.

科学家使用放射性核素测年法来确定古代文物的年龄。

作文

The term radioactive nuclide refers to an unstable atomic nucleus that undergoes radioactive decay, releasing energy in the form of radiation. These nuclides can be found naturally in the environment or can be artificially produced in laboratories. Understanding radioactive nuclide is essential in various fields such as nuclear medicine, environmental science, and nuclear energy. In nuclear medicine, radioactive nuclide plays a crucial role in diagnostic imaging and treatment. For instance, technetium-99m is a widely used radioactive nuclide in medical scans, allowing doctors to visualize organs and detect abnormalities. This application showcases how radioactive nuclide can be beneficial for human health, providing critical information that aids in timely medical interventions.Moreover, radioactive nuclide also has significant implications in environmental science. Naturally occurring radioactive nuclide such as uranium and radon can pose health risks when they accumulate in certain areas. Environmental scientists study these nuclides to assess their impact on ecosystems and human health. For example, monitoring radon levels in homes is vital because prolonged exposure to this gas can lead to lung cancer. Thus, understanding the behavior and effects of radioactive nuclide is essential for public safety and environmental protection.In the field of nuclear energy, radioactive nuclide is at the core of how nuclear reactors operate. Fission reactions occur when heavy radioactive nuclide like uranium-235 or plutonium-239 split into smaller nuclei, releasing a tremendous amount of energy. This process is harnessed to generate electricity in nuclear power plants. However, managing the waste produced from these reactions, which often contains long-lived radioactive nuclide, poses significant challenges. Safe disposal and containment of radioactive nuclide waste are critical to prevent environmental contamination and protect human health.Despite the potential dangers associated with radioactive nuclide, it is important to recognize their benefits. Research involving radioactive nuclide has led to advancements in cancer treatment through targeted radiotherapy, improving survival rates for many patients. Furthermore, scientists utilize radioactive nuclide in dating archaeological artifacts and geological samples, providing insights into historical events and the age of the Earth.In conclusion, the concept of radioactive nuclide encompasses a wide range of applications and implications. From its role in medical diagnostics and treatment to its significance in environmental monitoring and nuclear energy production, understanding radioactive nuclide is essential for both scientific advancement and public safety. As we continue to explore the properties and uses of radioactive nuclide, it is crucial to balance the benefits with the inherent risks, ensuring that we utilize this knowledge responsibly and ethically.

术语放射性核素指的是一种不稳定的原子核，它通过放射性衰变释放能量，形成辐射。这些核素可以在环境中自然存在，也可以在实验室中人工合成。理解放射性核素对于核医学、环境科学和核能等多个领域至关重要。在核医学中，放射性核素在诊断成像和治疗中发挥着关键作用。例如，锝-99m是一种广泛应用于医学扫描的放射性核素，使医生能够可视化器官并检测异常。这一应用展示了放射性核素对人类健康的益处，提供了有助于及时医疗干预的重要信息。此外，放射性核素在环境科学中也具有重要意义。天然存在的放射性核素如铀和氡在某些地区的积累可能会对健康构成风险。环境科学家研究这些核素，以评估它们对生态系统和人类健康的影响。例如，监测家庭中的氡气水平至关重要，因为长期接触这种气体可能导致肺癌。因此，理解放射性核素的行为和影响对于公共安全和环境保护至关重要。在核能领域，放射性核素是核反应堆运作的核心。裂变反应发生在重放射性核素（如铀-235或钚-239）分裂成较小的原子核时，释放出巨大的能量。这个过程被利用于核电站发电。然而，管理从这些反应中产生的废物（通常包含长寿命的放射性核素）面临重大挑战。安全处置和封存放射性核素废物对于防止环境污染和保护人类健康至关重要。尽管与放射性核素相关的潜在危险，但我们仍需认识到它们的益处。涉及放射性核素的研究促进了癌症治疗的进展，通过靶向放射治疗提高了许多患者的生存率。此外，科学家利用放射性核素对考古文物和地质样本进行定年，为历史事件和地球年龄提供了见解。总之，放射性核素的概念涵盖了广泛的应用和影响。从其在医学诊断和治疗中的作用，到其在环境监测和核能生产中的重要性，理解放射性核素对于科学进步和公共安全至关重要。随着我们继续探索放射性核素的性质和用途，平衡其益处与固有风险至关重要，确保我们负责任和伦理地利用这一知识。