label isotope

简明释义

标记同位素

英英释义

例句

1.Using a label isotope can help us understand how drugs are distributed in the body.

使用标记同位素可以帮助我们了解药物在体内的分布情况。

2.In this experiment, we will apply a label isotope to determine the age of the fossils.

在这个实验中，我们将应用标记同位素来确定化石的年龄。

3.The researchers used a label isotope to trace the metabolic pathways in the cells.

研究人员使用标记同位素追踪细胞内的代谢途径。

4.The label isotope allowed scientists to visualize the flow of nutrients in the ecosystem.

这个标记同位素使科学家能够可视化生态系统中营养物质的流动。

5.By employing a label isotope, we can track the movement of groundwater.

通过使用标记同位素，我们可以追踪地下水的运动。

作文

In the field of science, particularly in chemistry and biology, the concept of isotopes plays a crucial role. An isotope is defined as a variant of a particular chemical element that has the same number of protons but a different number of neutrons in its nucleus. This difference in neutron count leads to variations in atomic mass, which can significantly affect the behavior of the element in various reactions. Among the many applications of isotopes, one that stands out is the use of label isotope (标记同位素) in research and diagnostics. Label isotope refers to isotopes that are used as tracers in experiments to track the movement and interaction of substances within a system.The use of label isotope is particularly prevalent in the fields of biochemistry and molecular biology. For instance, in metabolic studies, researchers often utilize carbon-14 or nitrogen-15 isotopes to label molecules. By incorporating these isotopes into compounds, scientists can trace the path of these molecules through metabolic pathways. This technique allows for a better understanding of how organisms utilize nutrients and energy, which is essential for fields such as nutrition and medicine.Moreover, label isotope techniques are invaluable in medical diagnostics. Positron Emission Tomography (PET) scans, for example, rely on the use of radioactive isotopes to visualize metabolic processes in the body. A common isotope used in PET scans is fluorine-18, which is attached to glucose molecules. When injected into a patient, the fluorine-18 emits positrons that can be detected by the scanner, highlighting areas of high metabolic activity, often associated with cancerous growths. This application underscores the importance of label isotope technology in improving diagnostic accuracy and patient outcomes.Furthermore, the environmental sciences have also benefited from label isotope research. Scientists use isotopes to study ecological processes and understand how pollutants spread in ecosystems. By labeling certain elements with isotopes, researchers can track their movement through soil, water, and air, providing insights into contamination sources and helping to formulate effective remediation strategies.In addition to these practical applications, the study of label isotope also contributes to fundamental scientific knowledge. By investigating the behavior of isotopes under various conditions, scientists can learn more about atomic structure and nuclear physics. This research not only enhances our understanding of the physical world but also paves the way for innovations in technology and industry.However, it is important to note that the use of label isotope comes with ethical considerations, especially in medical applications. The safety of patients must always be a priority, and researchers must ensure that the levels of radioactivity are kept within safe limits. Additionally, the disposal of radioactive materials must be handled responsibly to prevent environmental contamination.In conclusion, the concept of label isotope (标记同位素) is a powerful tool in modern science, enabling researchers to explore complex biological processes, improve medical diagnostics, and address environmental challenges. As technology advances, the applications of label isotope are likely to expand, leading to new discoveries and innovations that can benefit society as a whole. Understanding and mastering this concept is essential for anyone pursuing a career in the sciences, as it represents a critical intersection of theory and practical application.

在科学领域，特别是在化学和生物学中，同位素的概念发挥着至关重要的作用。同位素被定义为特定化学元素的变体，它们具有相同数量的质子，但在其原子核中具有不同数量的中子。这种中子数量的差异导致原子质量的变化，这可能会显著影响元素在各种反应中的行为。在众多同位素的应用中，突出的之一是使用标记同位素作为研究和诊断中的示踪剂。标记同位素指的是用作实验中的示踪剂的同位素，以追踪物质在系统内的运动和相互作用。标记同位素的使用在生物化学和分子生物学领域尤为普遍。例如，在代谢研究中，研究人员经常利用碳-14或氮-15同位素来标记分子。通过将这些同位素纳入化合物中，科学家可以追踪这些分子在代谢途径中的路径。这项技术使我们更好地理解生物体如何利用营养和能量，这对营养学和医学等领域至关重要。此外，标记同位素技术在医学诊断中也具有不可或缺的价值。正电子发射断层扫描（PET）依赖于放射性同位素的使用，以可视化体内的代谢过程。PET扫描中常用的同位素是氟-18，它与葡萄糖分子结合。当注入患者体内时，氟-18会释放正电子，这些正电子可以被扫描仪检测到，突出显示高代谢活动区域，通常与癌症生长相关。这一应用突显了标记同位素技术在提高诊断准确性和改善患者结果方面的重要性。此外，环境科学也受益于标记同位素研究。科学家使用同位素研究生态过程，并了解污染物在生态系统中的传播。通过用同位素标记某些元素，研究人员可以追踪它们通过土壤、水和空气的移动，从而提供对污染源的洞察，并帮助制定有效的修复策略。除了这些实际应用外，标记同位素的研究还促进了基础科学知识的发展。通过研究同位素在各种条件下的行为，科学家可以进一步了解原子结构和核物理学。这项研究不仅增强了我们对物理世界的理解，还为技术和工业的创新铺平了道路。然而，需要注意的是，使用标记同位素伴随着伦理考虑，特别是在医学应用中。患者的安全必须始终处于首位，研究人员必须确保放射性水平保持在安全范围内。此外，放射性材料的处理必须负责任，以防止环境污染。总之，标记同位素的概念是现代科学中的一项强大工具，使研究人员能够探索复杂的生物过程、改善医学诊断和应对环境挑战。随着技术的进步，标记同位素的应用可能会扩展，导致新的发现和创新，从而使整个社会受益。理解和掌握这一概念对于任何追求科学职业的人来说都是必不可少的，因为它代表了理论与实际应用的关键交汇点。