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Complex carbohydrates, such as cellulose and hemicellulose, are largely indigestible, as are a number of origins

复杂碳水化合物如纤维素、半纤维素基本上是不能消化的,就象植物性食物中所找到的许多低聚糖、某些其它碳水化合物、树胶和纤维质材料一样。

Complex carbohydrates, such as cellulose and hemicellulose, are largely indigestible, as are a number of origi

复杂碳水化合物如纤维素、半纤维素基本上是不能消化的,就象植物性食物中所找到的许多低聚糖、某些其它碳水化合物、树胶和纤维质材料一样。

There are three categories of maturity indicators of organic matter in current petroleum industry to evaluate the degree of thermal evolution for source rocks, including: 1 optical indicators, i.e., vitrinite reflectance, bitumen reflectance, sporopollen color and thermal alteration index, conodont color alteration index, and reflectance of fossil fragments; 2 chemical indicators, i.e., the maximum temperature in pyrolysis of organic matter, methyl phenanthrene indicator, the atomic ratio of H/C, carbon isotope indicator, and biomarker indicators; 3 indicators of spectroscopy, i.e., the free radical concentration of kerogen, the average structural scale of aromatic nucleus of kerogen, and the laser-Raman spectrum of organic carbon.

摘 要:当前常用的有机质成熟度指标包括3大类:1 光学指标,包括镜质体反射率、沥青反射率、孢粉颜色、热变指数(thermal alteration index, TAI)、牙形石色变指数(color alteration index, CAI)和生物碎屑反射率;2 化学指标,包括有机质最大热解峰温度、甲基菲指数(methyl phenanthrene indicator, MPI)、H/C原子比值、碳同位素指标和生物标志物指标;3 谱学指标,包括干酪根的自由基浓度、干酪根芳核平均结构尺寸和有机碳激光拉曼光谱。

First of all, this study will be multi-walled carbon nanotubes by chemical oxidation process purified so it can be modified to deal with than the purification of purity before the modified 5 wt%, more than 1.89 times the surface area to increase the surface potential decrease of about 10 ~ 20 mV and the surface functional base (-COOH and-OH) to increase 1.45 times, and then the control technology of electroless preparation parameters include: analysis of plating time, plating analysis of temperature, metal ions in solution than the (Fe2+/ Ni2+), bath pH and the added value of dispersion Agent and other research towards Fe-Ni particles to increase the iron content and Fe-Ni particles spread in the MWCNT upper fixed targets,the results found that when the parameters for the preparation of 50 ℃, pH10, do not add dispersant, metal ions than the solution (Fe2 +/ Ni2 +) 7, the highest iron content can be Fe = 40.55 at%(flat iron content 111.17 mg / g) of nanocomposites Fe-Ni/CNT, then for a series of the nature of its analysis, the final evaluation Fe-Ni/CNT nanocomposites were processed on the effectiveness of the application of mixed pollutants, the results showed that in 120 minutes at the same time when Adsorption of heavy metal ions lead nitrate 10 ppm, selenium heavy metal ion degradation of 1 ppm and orange azo dye AO7 50 ppm standard of effluents, and after a total Fe-Ni nano-particles to SEM / EDS analysis of more than 50% still remaining.

本研究首先将多壁奈米碳管以化学氧化法做纯化改质处理能使其纯度较纯化改质前提高5 wt%、比表面积提高1.89倍、表面电位下降约10~20 mV以及表面官能基提高1.45倍,再控制无电镀技术之制备参数包括:析镀时间、析镀温度,镀液中金属离子比(Fe2+/Ni2+)、镀液pH值及是否添加分散剂等,研究朝提高Fe-Ni粒子的含铁量与Fe-Ni粒子散布固定在MWCNT上等目标进行,研究结果发现当制备参数为50 ℃、pH10、不添加分散剂、镀液金属离子比(Fe2+/Ni2+)7时,可得到最高铁含量Fe = 40.55 at%(单位铁含量111.17 mg/g)之奈米复合材料Fe-Ni/CNT,接著对其作一系列性质分析,最后评估奈米复合材料Fe-Ni/CNT对共处理混合污染物之应用效益,结果显示其在120分钟时能够同时吸附重金属硝酸铅离子10 ppm、重金属硒酸根离子1 ppm及降解偶氮橘色染料AO7 50 ppm达放流水标准,且共处理后奈米Fe-Ni粒子以SEM/EDS分析仍剩余50 %以上。

Amino-2-methylpropanol was used as the chemical modifying reagent of fatty acids to modify the carboxyl group into nitrogen-containing heterocycle which would effectively prevent the migration of carbon double bonds of the alkenyl in the electron impact source.

以2-氨基-2-甲基-丙醇为脂肪酸的化学修饰试剂,气相色谱-电子轰击质谱分析葵子油脂肪酸。2-氨基-2-甲基-丙醇将脂肪酸羧基修改为含氮杂环,使在EI源中避免了链烯基中碳碳双键的移动。

Vitrinite and desmocollinite have a relatively low potential of hydrocarbon generation. The stable carbon isotope composition of their pyrolysis oils is heavier than that of sporinite, cutinite and oils derived from coal-bearing strata. It seems that they cannot be major macerals to generate oil, even if they occupy a majority of proportion in the organic matter of coal and coaly shale, and that they can be good gas-prone macerals at the stage of high-maturity to over-maturity.

镜质体和基质镜质体的生油潜力相对较低,其生成的液态烃类的碳同位素组成比一般煤系原油重得多,而且这些组分本身对液态烃具有较强的吸附力,尽管其在煤系有机质中所占的比例很大,仍然难以成为生成液态石油的主要显微组分,只能在高成熟演化阶段成为良好的生气显微组分。

And the electroreduction process of nitrobenzene on WC powder electrode in basic solution is investigated by cyclic voltammetry, linear potential sweep and chronoamperometry. In the process of electroreduction of nitrobenzene on WC powder electrode, liquid phase mass transferring may be the control step.

并且也用循环伏安、线性扫描和恒电位阶跃等测试方法研究了碳化钨粉末电极在碱性介质中析氢和还原硝基苯的电化学特性,发现碳化钨在电催化还原硝基苯过程中,可能主要受反应物的液相传质控制。

Based on the results of 1H-NMR, 13C-NMR, ESI-MS and UV spectra, the structures of three compounds with antitumor activity were identified as Prodigiosin、7-Hexadecenoic acid、7,10-Octadecadienoic acid, respectively; another compounds (no activity to above tumor cells)was identified as Myristic acid.

运用核磁共振(1H-NMR、13C-NMR)、质谱、紫外光谱等现代波谱技术分析,将其中3种具有抗肿瘤活性的化合物分别鉴定为灵菌红素、7-十六碳烯酸(7-Hexadecenoic acid)、7,10-十八碳二烯酸(7,10-Octadecadienoic acid);鉴定另一种对上述肿瘤细胞无活性的化合物为肉豆蔻酸。

The empirical rule governing the position of double bonds in olefinic acids was referred to by analyzing electron impact spectra of the chemical products modified by 2-amino-2-methylpropanol of the fatty acids. This method provides a new technical tool for analyzing fine structures of unsaturated fatty acids.

通过解析不饱和脂肪酸2-氨基-2-甲基丙醇化学修饰产物的EI质谱图,得到了不饱和脂肪酸中碳碳双键的定位规则,从而为分析不饱和脂肪酸精细结构提供了手段。

Parisite is hosted in the granular rhyolite, rhyolite and rhyolitic ignimbrite. The host rocks were formed in Late Early Cretaceous Epoch buried to depth of

氟碳钙铈矿的寄主岩为球粒流纹岩、流纹岩、流纹质熔结凝灰岩、流纹质凝灰岩,其寄主岩分布深度为2930~3830m,形成时代为早白垩世晚期。

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But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊!不用提了。提到肉,真是糟透了。

Tristan, I have nowhere to send this letter and no reason to believe you wish to receive it.

Tristan ,我不知道把这信寄到哪里,也不知道你是否想收到它。