样品

In the rheological experiments for natural mafic rock samples there will be semibrittle deformation under lower temperature ranges, in contrast, there will appear melts at grain boundaries in the sample under higher temperatures, and this could greatly effect the rheological behaviors of samples.

在采用天然基性岩样品进行的流变实验中，存在因实验温度低而样品处于半脆性变形域与因实验温度高而样品颗粒边界出现熔体的矛盾。

Statistics show that Mahonia plant has high genetic diversity, and the distance of gene of same species with different place of origin is markedly smaller than that of different species. The species can be identified by comparing the distance of gene between populations with that of database.

统计结果显示：十大功劳属植物具有很高的遗传多态性，在研究的30个随机引物中，多态性比率为95％；不同产地的同种植物的遗传距离明显小于不同种；在应用中可望对待鉴定材料进行相同引物的扩增，引入数据库，通过计算样品与数据库标准样品的遗传距离来对待测样品进行鉴别，或直接通过聚类来确定其归属。

In this work, nitrogen adsorption at 77K on activated meso-carbon microbeads has been first measured by a Micromeritics ASAP 2010 accelerated surface area and porometry apparatus.

本文利用用ASAP 2010比表面吸附仪测定了77K氮气在介孔活性碳微球样品中的吸附，得到了氮气在样品内吸附等温线、样品的比表面和平均孔径。

And 64 of trace VOCs, including 17 USEPA priority controlled pollutants, were detected in the spring and summer samples respectively. Benzene and other monocyclic hydrocarbons had the highest concentrations ranging from 4.25 to 202.35?

结果表明，在春、夏季样品中可分别检测出 47和 64种化合物，其中有些化合物为USEPA优先控制毒害有机污染物；夏季样品中微量挥发性有机污染物的浓度大多比春季样品高，有的甚至高 1个数量级以上。

Increasing the milling time continually,α-Fe of monophase BCC transfer to FeC intermetallic compound.

从X-ray衍射谱的分析可看出，这是由于样品发生了相变，从单相体心立方结构的α-Fe固溶体向FeC金属间化合物转变。x=1的样品，经255h球磨后，样品成为单相Fe5C2金属间化物，它具有单斜晶体结构。

In addition, from the space structures of specimen distributionregions to the distribution patterns of every kind of specimens in an individualdistribution region, the obvious self-comparability exists in the distribution pattern oftest values of elastic wave velocities and medium densities.

另外，岩土样品弹性波速与介质密度的分布从样品分布域的空间结构到分布域内各类子样品的分布规律具有明显的自相似性。

The results suggest that different methods will not result in remarkable differences in δ^13C and δ^18O measurements of lake ostracode shells. Therefore, sample cleaning procedure is considered unnecessary for such analyses.

实验表明：不同处理方法对所测介壳样品的δ^13C值和δ^18O值不会产生大的影响，在介壳样品的稳定同位素测试之前不需要对介壳样品进行处理。

XRD showed hexagonal wurtzite structure. Room-temperature PL spectra of perfectly overcoated CdSe/ZnS only showed a narrow band edge emission. Emission peak was great red-shifted relative to absorption and the shift increases as the size decreases. The size-dependence of shift could be explained very well in terms of excition fine-structure model and stress at interface owing to lattice mismatch contributes to the shift between CdSe and CdSe/ZnS with the same size.

结果显示表面修饰完善的样品的荧光光谱只有一个窄而强的带边发射；所有样品的荧光峰相对于1S-1S吸收峰有较大的红移，并且移动量随尺寸的减小而增加，利用激子的精细结构模型很好地解释了红移量和尺寸的关系；核／壳结构的样品的吸收峰和荧光峰相对于同尺寸的单量子点也有红移现象，这是由于CdSe和ZnS的晶格失配在界面上产生压力造成的。

Based on this idea, the author has chosen two typical loess sections of Luochuan, and Xifeng for this study, collected the successive loess columns; To probe the conditional experiments of BeO sample preparation and measurement, and improve the existing method; On the basis of the technology improvement, the author has finished 402 samples' BeO preparation and AMS measurement; Also at the same time, to separate quartz from samples at 1 cm interval for both Luochuan and Xifeng sections systematically, to carry out measurements of quartz grain-size, SUS, grey scale, carbonate content and bulk sample density; By using the grain size model, the author has set up the chronological framework for both Luochuan, and Xifeng sections and the time sequence of millennial scale abrupt climate events recorded in loess strata, and reconstructed the East Asian monsoon history over 130ka by using multi proxies; Finally, to discuss the possible mechanisms of palaeoclimatic changes tentatively.

详细地球科学的发展离不开高精度和高分辨率的研究。运用长寿命核素如〓Be作为环境过程的示踪，已成为不可替代的有效工具。本论文选择洛川、西峰两个典型的黄土剖面，连续采集柱状样；探索了BeO样品制备、测量的条件实验，改进了原有的方法，完成了402个BeO样品的制备和AMS测量；同时还系统地分离洛川、西峰剖面高分辨率（1cm）黄土、古土壤样品中的碎屑石英，测量了碎屑石英粒度，以及全样的磁化率、灰度、碳酸盐含量和容重等古气候代用指标；采用粒度年代模式建立了洛川剖面和西峰剖面的年代标尺，建立了黄土地层记录的千年尺度的气候突变事件的时间序列，多指标重建了最近130ka东亚季风变迁史；初步讨论了古气候变迁的可能机制。

Under optical microscope,the observational result indicates that the peach blossom stone samples from Gao Mountain contains transparent and distransparent minerals which forms pealike and red spots.

光学显微镜的观察结果表明，高山桃花石样品中存在透明和不透明矿物，其中不透明矿物形成了艳丽的红色斑点；XRD测试表明，样品的矿物组成为地开石、赤铁矿、石英以及少量的叶腊石；拉曼光谱测试结果表明，样品的基质部分为地开石，结晶形态完好的红色矿物颗粒与呈浸染状的红色部分均为赤铁矿，无色透明的矿物颗粒为石英。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。