查询词典 coals

The samples used in the investigation include seven demineralized raw coals ranging from peat to anthracite in rank and three chars derived from two demineralized bituminous coals and one boghead coal, and their combustion characteristics are analyzed using TG-DSC techniques.

以煤阶从泥煤到无烟煤7个脱灰原煤及两个烟煤、一个腐泥煤制成的半焦作为燃烧试样，利用同步TG─DSC技术研究其燃烧特性，用一级反应动力学方程：1n－1n＝－E／＋1n处理所得实验数据。

Seven coals from Shenfu, Huangling, Huating, Yaojie, Lingwu, Datong and Urumuqi coal districts were selected as samples to study in this project. At first, petrographic characteristics, proximete and ultimate were done upon the coals.Lithotypes as vitrain, fusain, clarain and durain were separated.

本项目选择我国西北地区的神府矿区、黄陵矿区、华亭矿区、窑街矿区、灵武矿区、大通矿区、乌鲁木齐矿区的七种煤，首先进行了煤岩、煤质研究，得出这些煤的惰质组含量普遍较高。

Additionally, some trace elements in coals, which indicate the paleoclimate and the types of bog in coal-forming period, can also show hydrocarbon generating potential of coal, such as Cu which has a strong affinity to organic macromolecule in coals. Cu is a fades element, and may be an indicator element of hydrocarbon generating potential.

其中Cu既是一个有着与煤的大分子物质较强亲和力的元素，又是一个可以显示古气候古成煤沼泽类型的"指相"元素，因而在指示煤的生烃潜力方面可能具有普适性。

Through test of mixedly burning shenhua coal with other bituminous coals in laboratory condition,the regularity of variation in ignition,burnout,as well as slagging behavior and contamination after mixedly burning shenhua coal with other bituminous coals in different ratios has been grasped.

通过在试验室条件下对神华煤与其它烟煤混煤的掺烧试验，掌握了神华煤掺入不同比例其它煤后，混煤的着火、燃尽和结渣性能及沾污性能的变化规律。

All the compounds were isolated and identified from the bituminous coals for the first time, bis(2-ethylheptyl) terephthalate and 18-ethyl-17-(hexan-2\'-yl) docosanoic acid are new compounds.Further more, a Colourless Oil Liquid, a white acerate crystals containing some alkanes, a white tabular crystals consisting of some fatty acid esters and a white powder crystals in which some fatty acids exist were isolated and analysed by GC/MS for the first time.Through this research, a study method of"classification extract of bituminous coal- separation with silica-gel and gelatin column chromatographies- identification of the isolated compounds by FTIR, GC/MS, LC/MS, 1H NMR and 13C NMR analyses"was established and proved to be a practical approach toward separable and non-destructive identification of some organic compounds in bituminous coals for coal chemistry research.

本研究建立了&原煤分级萃取-硅胶与凝胶柱层析分离与纯化-GC/MS或LC/MS检测-FTIR、MS、1H NMR和13C NMR波谱解析&这一煤中有机化学成分的非破坏性分离与分析的研究方法，并验证该研究方法有效可行。

In this study, we simulated diagenetic alterations under laboratory conditions by thermally treating three different types low-grade coals at 200, 250, 300, 350, 400, 450 and 500℃, yielding three series of coals with differences in parental material and maturation.

本研究选用三种不同类型的未成熟煤，在实验室中于200℃，250℃，300℃，350℃，400℃，450℃，500℃七个温度对样品进行热处理，得到三个系列不同类型和不同成熟度的煤。

In this doctoral dissertation, the modes of occurrence of about 30 elements and their combination with macerals and minerals in the coals from 10 typical coalfields in China are systematically researched by sink-float tests and petrological methods based on the investigation to the concentration distribution of trace elements in Chinese coals.

本文从分析中国煤中微量元素含量分布的基本特征出发，选择了中国10个有代表性的煤样，通过浮沉试验和煤岩分析等手段，系统地研究了中国煤中30余种微量元素的赋存状态，主要是这些元素在各种煤岩组分中的分布特征。

This dissertation is characterized with the application of petrological methods in the study of trace elements in coals. The modes of distribution of trace elements in macerals and minerals in coals are proposed by means of the integration of two well-operated technologies, sink-float test and maceral analysis.

本文的主要特色在于将煤中微量元素研究与煤岩学方法紧密结合，运用浮沉试验及煤岩分析两种成熟技术，有效地解决了煤中微量元素在各种组分中的分布研究问题。

The strongly nonlinear pore structures of pulverized coals can be described by the fractal theory. The pore fractal dimensions of 10 pulverized coals, which are in the range of 2.572~2.722, were analyzed on a N2 adsorption porometer. The apparent viscosities of coal water slurries were measured on a Haake rotary viscometer.

用分形理论能描述具有强烈非线性特征的煤粉孔隙结构，利用氮吸附仪分析得到10种煤样的孔隙分形维数为2.572~2.722，利用Haake黏度计测量水煤浆黏度，讨论了孔隙分形、水分、氧量和可磨性指数等对水煤浆性质的影响规律，得到相关的拟合经验公式。

Five typical coals of low-to-medium rank (Huolinhe brown coal, Majiata non-caking coal, Datong weakly caking coal, Huozhou gas coal, Lingshi fat coal) and their macerals are prepared. The molecular structure and the oxygen functional groups of the selected coals and their macerals are studied by means of the conventional coal properties analysis, chemical analysis and the advanced instrumental methods such as FTIR,XRIK 13C-NMR.N XPS. The molecular structure characteristics, regularities and the results are discussed. Additionally, the total oxygen content and distribution characteristics of different oxygen functional groups in the raw coals and their macerals are studied.

本文中选取了中低变质程度煤中的五种典型煤种——霍林河褐煤、马家塔不粘煤、大同弱粘煤、霍州气煤、灵石肥煤以及它们的不同显微组分作为研究对象，采用了常规的煤质分析、化学分析法以及先进的仪器分析法如傅立叶变换红外光谱、X射线衍射、高分辨固体~(13)C核磁共振谱~(13C-NMR及X光电子能谱等方法，全面地研究分析了所选煤样的惰质组、镜质组的分子结构及煤中氧的赋存形态，得到所选煤样惰质组分的分子结构特征及结构参数，分析比较了惰质组与镜质组在分子结构上的差异性，并讨论了惰质组分的分子结构特征及结构参数随煤变质程度的变化规律；同时，通过研究得到了所选原煤样及其显微组分中总氧含量及各种不同类型含氧官能团的含量分布特征。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。