样品分布

In order to establish relative analysis methods and find out transfer rules and vertical distribution characteristics of heavy metals in sediments of Poyang lake,column form sampler designed by us was used in the experiments,the sediments samples from Wucheng section of the Ganjiang River in Poyang lake area were collected using adjacent water vertical spile method.

为建立鄱阳湖水域沉积物中重金属的相关研究方法，了解重金属污染物的迁移规律，并探讨底泥中重金属的垂直分布特征，采用底质柱状采样器通过临水垂直插管法采集鄱阳湖流域赣江吴城段的底质样品，利用微波消解—AS-990型原子吸收分析体系对柱状样中不同深度的样品进行重金属Cu含量的测定。

Microcalorimetric measurements of NH~3 adsorption on catalysts reveal that the remarkable strong acidity and catalytic activity of the Al- promoted catalysts are caused by a change of distribution of acid site strengths and an enhancement in the number of strong and intermediate-strong acid sites effective for the n-butane isomerization and benzoylation of toluene.

NH~3吸附微量热结果表明，Al促进样品的强酸性和催化活性的显著提高是由于样品表面的酸位强度分布发生了变化，有利于正丁烷异构化反应和苯甲酰化反应的中强酸位和强酸位的酸量显著增加。

The results show that the alloy undergoes obvious plastic elongation, the specimen fractures into four sections and the diameter changes from 16 mm to 12 mm. The fracture surfaces distribute randomly well developed and partially developed veinal patterns. The deformation behavior of alloy is non-Newtonian flow behavior. About 3% amorphous matrix of extruded specimen transforms crystal, the crystal particles with size of 10-20 mm are precipitated in the amorphous matrix, the thermostability of the extruded specimen was lowered. The failure of the alloy is mainly attributed to non-uniform viscous flow under high strain rate resulting from the hydrostatic extrusion process.

结果表明：非晶合金在高应变速率下产生了明显的塑性变形，直径从16 mm变为12 mm，断裂为4段，且样品断口上随机分布着充分发展与未充分发展的脉纹式切变带，由此可看出非晶合金的变形为非牛顿体变形行为；挤压后的样品约有3％的非晶相发生晶化，在非晶基体上析出10～20 nm的纳米晶粒，导致挤压后非晶合金的热稳定性降低；静液挤压高应变速率变形条件使非晶合金产生非均匀流变，是造成非晶合金断裂的主要原因。

Friction on the die/sample interface, as well as imhomoginiety of temperature distribution in the samples is studied to account for the deformation imhomogeniety, and the two factors lead to the barrelling and fold-over of the samples during compression.

其直接原因是样品和压头间的接触摩擦条件随温度升高和Z值的降低而恶化，并导致样品出现腰鼓和侧翻等不均匀变化现象。合金压缩时的温度分布不均也是导致出现不均匀变形的原因之一。

The experimental results show that microwave sintering promotes the densification of green compacts with higher heating rate and reduced sintering cycle. The sintered relative density of 99.8% can be achieved during microwave processing under appropriate conditions. In addition, microwave sintering improves the uniformity and homogenization of W grain size, and yet leads to growth of W grain. Fe sintering aid degrades the microstructure uniformity and further coarsens W grains. The present investigation demonstrates the feasibility of applying microwave sintering technique to consolidate W-Cu composites and its promising outlook in reducing production cycle and cost.

结果表明：微波烧结升温速度快，周期短，能促进W-Cu材料的致密化；在适当条件下，微波烧结能获得相对密度达99.8%的W-Cu样品；微波烧结能改善W-Cu样品中两相分布的均匀性和W晶粒尺寸的一致性，但引起W晶粒的快速长大；Fe烧结助剂导致W-Cu材料显微组织均匀性变差，并引起晶粒进一步粗化；微波烧结技术能够应用于W-Cu材料的制备，在缩短生产周期、降低生产成本方面具有潜在优势。

Author was menstruated content of boron and researched the status of lack of Boron and researched relativity of its Influencing facto, the results showed that the average content of available boron in the yellow soil was 0.39±0.27 mg/kg, 80 percent of its was under 0.5mg/kg which was lack for boron and 17.44 percent of its was under 0.2mg/kg which was especially lack for boron; The distribute frequencies of available boron contents of yellow soils in Chongqing was dispersedly, its range of 0.07mg/kg to 1.99mg/kg. The diversity of different zoology area was distinct. The result of pertinence analyses showed that available boron contents had correlativity with the pH(r=0.181** n=281) and CEC（r=0.124** n=281 and It had correlativity with Organic matte When the content of organic matte is high; in addition, soil granule、clime was the Influencing factor of availability of boron in Yellow Soils in Chongqing.

笔者通过调查取样对重庆市黄壤硼的含量进行测定并分析了缺硼的程度，对其影响因素进行了相关性分析，研究结果表明：重庆市黄壤有效硼的平均含量为0.39±0.27mg/kg，其中近80%的土壤样品有效硼含量低于0.5mg/kg，属于低硼或缺硼土壤，还有17.44%的土壤样品有效硼含量低于0.2mg/kg，属于极度缺硼的土壤；而有效硼含量的分布频率比较分散，变幅较大，从0.07mg/kg~1.99mg/kg，变异系数达到69.41%，不同生态类型区土壤有效硼含量的差异十分明显；而相关性分析结果表明：土壤有效硼与土壤pH值(r=0.181** n=281)和CEC（r=0.124** n=281呈正相关，在有机质含量较高的条件下与其相关性也较为显著（r=0.347** n=90，而土壤质地以及气候也对重庆市黄壤硼的有效性有很大的影响

As a result of changing the combination states of silver and tin oxide,the tin oxide...

对块体样品的显微组织分析表明，AgSnO2块体样品能够克服氧化物的聚集，二氧化锡颗粒在银基体中均匀弥散分布。

But uneven deposition rate along the radius of the sample holder is also found by infrared analysis technology when sample is deposited in magnetic field profile,which is produced by the coil current with 137.7A if the SmCo permanent magnet is equipped under the substrate holder.

通过红外吸收谱技术分析，虽然样品台下面放置钐钴永磁体并使磁场线圈电流为137.7A下能得到最大的沉积速率，但是沿样品台半径方向沉积速率呈现很明显的不均匀分布。

But uneven deposition rate along the radius of the sample holder is also found by infrared analysis technology when sample is deposited in magnetic field profile, which is produced by the coil current with 137.7A if the SmCo permanent magnet is equipped under the substrate holder.

通过红外吸收谱技术分析，虽然样品台下面放置衫钻永磁体并使磁场线圈电流为137.7A下能得到最大的沈积速率，但是沿样品台半径方向沈积速率呈现很明显的不均匀分布。

For sample with longer GI time, which resulting in the better uniformity of this sample, the unusual decrease of FWHM is not observed in the measurement of the temperature dependent PL spectra. Considering the better uniformity of the sample, the effect of carrier redistribution on PL spectra is unapparent. Therefore, the FWHM increases gradually with temperature.

对於成长中断时间较长的样品来讲，由於其均匀度较佳，所以在变温的光激光谱量测中，我们并未发现半高宽随温度上升而有下降的趋势，这是因为载子重新分布效应对一个均匀度佳的样品来讲，其显示出来的效果并不明显，所以我们只能观察到电子与声子散射效应所表现出来的现象，也就是半高宽随温度上升而缓慢增加。

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。