nanogram

简明释义

英[ˈnænəʊˌɡræm]美[ˈnænəˌɡræm]

n. 纳克，毫微克

英英释义

单词用法

同义词

反义词

例句

1.Combining the isotopic dilution (ID) method with the on-line fractionation correction method, the rhenium content can be determined accurately at sub-nanogram level using the normal solution n.

溶液中加入铱元素进行铼同位素的质量分馏校正，在常规的溶液雾化进样条件下，采用同位素稀释法可准确测定纳克级的铼含量。

2.Combining the isotopic dilution (ID) method with the on-line fractionation correction method, the rhenium content can be determined accurately at sub-nanogram level using the normal solution n.

溶液中加入铱元素进行铼同位素的质量分馏校正，在常规的溶液雾化进样条件下，采用同位素稀释法可准确测定纳克级的铼含量。

3.China requires that incinerators discharge no more than one nanogram of dioxin per cubic metre. The European Union sets a standard that is one-tenth of that amount.

中国要求垃圾焚烧炉所排放的二恶英每立方米不超过一毫微克，欧盟的标准则是这一标准的十分之一。

4.It presents a simple method was presented for the separation and preparation of insect pheromones at the nanogram level by using gas chromatography (GC).

报道一个用于昆虫外激素研究的简单快速气相色谱分析制备方法。

5.A transport and delivery system for nanogram quantities of molecular species that does not use microfluidic channels, pumps, or valves is described.

本文介绍了一种不需要微流体通道、泵或瓣膜的纳克量分子运输和递药系统。

6.As part of the 2007 RoboCup in Atlanta, Georgia, a new fleet of bots debuted in the Nanogram Demonstration competition in July.

今年7月，在佐治亚州亚特兰大市举行的“2007机器人足球世界杯”毫微克演示比赛中，一支由机器人组成的新球队首次亮相。

7.The laboratory detected a substance at a level of just one nanogram (纳克) per milliliter in the water sample.

实验室在水样中检测到的物质浓度仅为每毫升一个纳克（nanogram）。

8.In clinical trials, researchers found that the drug was effective at doses as low as 10 nanograms (纳克) per kilogram of body weight.

在临床试验中，研究人员发现该药物在每千克体重仅10纳克（nanograms）的剂量下仍然有效。

9.Environmental scientists measure pollutants in the air in nanograms (纳克) to assess air quality.

环境科学家用纳克（nanograms）来测量空气中的污染物，以评估空气质量。

10.A typical blood test can detect hormones in concentrations as low as 5 nanograms (纳克) per milliliter.

典型的血液测试可以检测到激素浓度低至每毫升5纳克（nanograms）。

11.Food safety regulations require testing for certain toxins at levels measured in nanograms (纳克) per serving.

食品安全法规要求对某些毒素进行测试，水平以每份计算的纳克（nanograms）为单位。

作文

In the field of science and technology, precision is paramount. One unit of measurement that highlights this precision is the nanogram. A nanogram (纳克) is one billionth of a gram, which is an incredibly small quantity. To put this into perspective, a single nanogram is equivalent to the weight of a grain of salt divided by a million. This minute measurement is often used in various scientific disciplines, including chemistry, biology, and environmental science. The significance of the nanogram can be seen in numerous applications. For instance, in the pharmaceutical industry, drugs are often dosed in nanograms to ensure that patients receive the exact amount needed for efficacy without causing adverse effects. This level of precision is crucial, especially when dealing with potent medications that can have strong effects even in minuscule amounts. Moreover, in environmental science, researchers may measure pollutants in nanograms per liter of water or air. This allows scientists to detect and quantify contaminants at extremely low concentrations, which is essential for assessing the health of ecosystems and human populations. For example, the presence of heavy metals or toxic substances in water sources can be measured in nanograms, helping authorities take necessary actions to protect public health. In the realm of biotechnology, the nanogram plays a significant role as well. Techniques such as polymerase chain reaction (PCR) require precise measurements of DNA, often in nanograms, to amplify genetic material for analysis. This is vital in fields like forensic science, where even the slightest amount of DNA can provide crucial evidence in criminal investigations. Furthermore, the advancement of nanotechnology has brought the nanogram into the spotlight. As scientists manipulate materials at the nanoscale, understanding and measuring substances in nanograms becomes increasingly important. This can lead to innovations in medicine, electronics, and materials science, where properties of materials can change dramatically at the nanoscale. Despite its small size, the nanogram holds immense power in research and industry. It serves as a reminder of how detail-oriented science can be and how even the tiniest measurements can have significant implications. As we continue to explore the microscopic world, the nanogram will undoubtedly remain a critical unit of measurement, allowing us to make discoveries that can change our understanding of the universe. In conclusion, the nanogram (纳克) is more than just a unit of measurement; it represents the precision and accuracy that are essential in scientific research and technological advancements. Whether it is in pharmaceuticals, environmental monitoring, or cutting-edge nanotechnology, the nanogram plays a pivotal role in ensuring that we can measure and understand the world around us with remarkable accuracy. As we move forward into an era of rapid scientific progress, the importance of such precise measurements will only continue to grow, highlighting the need for meticulous attention to detail in all areas of research and development.

在科学和技术领域，精确度至关重要。一个突显这种精确度的测量单位是纳克。纳克（nanogram）是克的十亿分之一，这是一个极其微小的数量。为了更好地理解这一点，一个纳克相当于将一粒盐的重量除以一百万。这种微小的测量常用于化学、生物学和环境科学等多个科学领域。 纳克的重要性可以在许多应用中看到。例如，在制药行业，药物的剂量通常以纳克为单位，以确保患者获得所需的确切剂量，从而达到疗效而不引起不良反应。这种精确度至关重要，尤其是在处理强效药物时，即使是微量也可能产生强烈的效果。 此外，在环境科学中，研究人员可能会测量水或空气中的污染物，单位为每升纳克。这使科学家能够在极低浓度下检测和量化污染物，这对于评估生态系统和人类健康至关重要。例如，水源中重金属或有毒物质的存在可以用纳克来测量，帮助当局采取必要措施以保护公共健康。 在生物技术领域，纳克同样发挥着重要作用。聚合酶链式反应（PCR）等技术需要精确测量DNA，通常以纳克为单位，以便放大供分析的遗传材料。这在法医学领域至关重要，因为即使是微量的DNA也可以提供关键证据。 此外，纳米技术的发展使得纳克备受关注。当科学家在纳米尺度上操控材料时，理解和测量纳克中的物质变得越来越重要。这可以导致医学、电子学和材料科学中的创新，其中材料的特性在纳米尺度上可能会发生剧烈变化。 尽管其体积微小，但纳克在研究和工业中具有巨大的影响力。它提醒我们科学是多么注重细节，以及即使是最微小的测量也可能具有重要的意义。随着我们继续探索微观世界，纳克无疑将继续作为一个关键的测量单位，使我们能够以惊人的准确性发现改变我们对宇宙理解的事物。 总之，纳克（nanogram）不仅仅是一个测量单位；它代表了科学研究和技术进步中至关重要的精确度和准确性。无论是在制药、环境监测还是尖端的纳米技术中，纳克都在确保我们能够以令人惊讶的准确性测量和理解周围世界方面发挥着关键作用。随着我们进入快速科学进步的时代，这种精确测量的重要性只会继续增长，突显出在所有研究和开发领域对细节的严格关注的必要性。