查询词典 extraction

Meanwhile, the concentration of Pb,Zn and other heavy metals is rather high in the oxidation zone and decreasesdownward to levels that are unbelievably low for Pb-Zn mine tailings. Theseobservations suggest that heavy metals should be re-immobilized by secondaryminerals, rather than primary minerals, in the oxidation zone, and could be leachedout from suboxic environment due to low rate oxidative dissolution which preventsthe precipitation of secondary minerals in significant amount. Thus, cover scenarioswhich establish a suboxic environment beneath the cover layer might not always beeffective in preventing heavy metal release from mine tailings.Sequential extraction studies indicate that, in addition to heavy metal leaching,oxidation of the mine tailings increased the mobility of residual Zn, and Cu, while Pb remains immobile due to the formation of anglesite (PbSO4). Using the seven-step extraction technique developed by Dold (J. Geochem. Explor., 2003, 80: 55-68), galena dissolves in significant amount at step 2 most probably due to the strong complexing of Pb2+ by acetate, while other metal sulfides dissolve at step 6, which suggest that this extraction technique could not be used to evaluate the mobility of lead in natural environment

重金属含量均低于新鲜尾矿，但以硬化层中的含量最高(Pb、Zn含量分别为0.47%和0.93%)，往下大幅度降低，表明尾矿风化过程中形成的次生矿物对Pb、Zn等重金属元素有较强的固定作用，而次氧化带的淋溶作用造成了金属元素的大量流失；(4)与新鲜尾矿相比，硬化层中铅的可迁移性大大降低，硬化层之下尾矿样品中铅的可迁移性也不同程度降低，这是由于硫化物氧化产生的硫酸根与尾矿中的铅反应形成铅矾(PbSO_4)的缘故；(5)氧化作用使尾矿中的zn、Cu等重金属的可迁移性不同程度地增大，其中对锌的可迁移性影响最大，铜的可迁移性与铁比较相似，铅则容易与硫化物氧化形成的SO_4~(2-)反应形成铅矾(PbSO_4)；(6)为了减少尾矿污染和修复矿山环境，人们提出了各种不同的尾矿覆盖方案，本文的研究结果表明，这些方法不一定能够有效地阻滞污染元素的迁移。

With the advancement of science and technology, some new theories and new ways emerged gradually, some of them merged with specific theoretical tools, this specific theoretical tools include mathematical morphology, fuzzy techniques, neural networks, wavelet and so on. Secondly, in this paper, it described and analyzed the segmentation method based on the edge in the domain of image segmentation in detail. It did experiments on several edge detection operators using MATLAB, it summarized the advantage and the shortcoming of traditional edge detection operators, and the operating environment. On the basis of the experimental analysis, it implemented an edge location more precise, more efficient operating speed edge extraction method——Template Vector. In this method, it optimized differential approximate calculation of first differential operators the paper mentioned. After experimented on this edge extraction method, contracted with the traditional methods, the edge outline is extracted more accurately and more exquisitely, furthermore, it retained the object outline furthest, and achieved more satisfied edge extraction result.

其次，对图像分割领域中常用的基于边缘的分割方法进行了详细的研究与分析，对各种边缘检测算子进行了MATLAB环境下的实验，分析总结了各种传统边缘检测算子的优缺点和适应环境，并针对传统边缘检测算子在处理显微图像时的缺陷，在实验分析的基础上研究并实现了一种边缘定位更加精确、运算速度更加快捷的边缘提取方法——模板向量算法，在该算法中，对文章提到的一阶微分算子中微分的近似计算作进一步优化，经过对该边缘提取方法进行实验，其结果与传统方法相比，轮廓提取更为精确细腻，且最大程度的保留了图像中物体(目标个体或者明显噪声点)的轮廓，得到了比较理想的边缘提取效果。

To study the effects of factors such as electromagnetic field and electron temperature on the ion extraction characteristics (extraction time, collision loss ratio) in atomic vapor laser isotope separation, 2-D electron-equilibrium model was used to analyze and simulate the ion extraction process.

为研究各因素对原子蒸气激光同位素分离中离子引出特性的影响，采用二维流体理论电子平衡模型分析计算了引出过程中外加恒定电磁场和电子温度等因素对离子引出特性的影响。

Based on analyzing the generation mechanism and quality characteristics of reclaimed acid from benzol refining and comparing varies kinds of purification methods, the operation easily, the technical process simple extraction method is used to purify the reclaimed acid and the dosage of the extraction agent and extraction power are studied in detail.

对精苯再生酸的生成机理、质量特性进行了分析，通过比较各种再生酸净化方法的优缺点，选用操作简便、工艺简单的再生酸净化方法——萃取法对再生酸进行处理试验，并对萃取剂的用量、萃取能力等进行了详细的研究。

The Plackett\|Burman experimental design was used to determine the main influencing factors which are phase ratio, extraction time and extraction temperature. Using these three factors as variables, the extraction operation conditions were optimized by Response Surface Methodology.

同时，通过Plackett-Burman实验设计筛选出相比、萃取时间和萃取温度为主要影响因素，并应用响应面方法分析得到了这3个因素的优化结果。

By the analysis of coal two-step extract by FTIR and comparison of extraction rate, we can see the two-step extraction with combination of cyclohexanone and CS〓-NMP (1: 1, v/v) has higher extraction rate as to coal of different degree of coalification.

4环己酮和CS〓－MP（1：1，v/v）复合溶剂的两步抽提对不同煤化程度的各煤种均保持了较大的抽提率，基本达到对不同煤种的可溶化要求。

With corn embryo being coproduct in corn starch production as material, glutathione was extracted through hot water extraction after supercritical CO2 fluid extraction and ultrasound wave treatment. The results showed that The optimum conditions of hot water extraction are solid; liquid 1:15, temperature 90 ℃, pH3.0, time is 15 min. On these conditions GSH yield is 97 mg/100 g corn embryo.

以淀粉加工副产物玉米胚为原料，经过超临界流体萃取脱脂及超声波破壁处理后，采用热水浸提法提取谷胱甘肽，最佳热水浸提工艺条件为固液比1：15 g/mL、浸提温度90℃、浸提液pH3.0、浸提时间15 min，在此条件下谷胱甘肽提取量为97 mg/100g玉米胚。

Results The main reason of silicon gel artificial body and brine bottle extraction after augmentation mammoplasty is envelope crispation. The main reason of polymer acrylic gel extraction after augmentation mammoplasty is sclerosis and discomfort of pain. The main reason of injected fat extraction after augmentation mammoplasty is infective liquefaction.

结果：硅凝胶假体及盐水袋隆乳术后取出的主要原因为包膜挛缩、渗漏及破裂；聚丙烯酰胺水凝胶注射隆乳术后取出原因主要为硬结及疼痛不适；脂肪注射隆乳术后取出原因为感染液化。

The robustness of different extraction rules is discussed and the key element of constructing robust Wrapper is introduced. Extraction rules extract the information from web page into the destination schema, however, this is not enough, and the Web information extraction still has many new challenges.

抽取规则只解决了从Web页面抽取出数据至目标模式的问题，然而在互联网环境下，Web信息集成面临许多新的挑战。

Although there are a number of different types of cataract extraction, the two most popular procedures are called ICCE (intracapsular cataract extraction) and ECCE (extracapsular cataract extraction).

虽然有一些不同类型的白内障摘除术，这两个最流行的程序被称为ICCE和幼儿保育和教育。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。