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The influence of surfactants CTMAB and CPC on the absorption spectra, calibration curve, and acidity of Al-CAS colouring system was studied.

对表面活性剂[十六烷基三甲基溴化铵和氯化十六烷基吡啶]在吸收光谱、工作曲线和显色酸度等方面对铝-铬天青S显色体系的影响进行了研究。

In the third chapter, we shall define the concepts of the adjacent vertex distinguishing incidence coloring and the adjacent vertex distinguishing incidence chromatic number of graphs: For graph G, let Q_u={|u"∈N}U{|u∈N},σ: I→C is a k- incidence coloring of graph G, C_u denotes the set of colors assigned to Q_u.

在第三章中我们将定义图的邻点可区别关联着色及邻点可区别关联色数:对图G,设Q_u={|u"∈N}∪{|u∈N},σ:I→C为图G的k-关联着色,C_u表示着在Q_u上的色集。

We investigated constituent of triterpenoid saponins ofAlbizzia, two new compounds together with two known compounds were isolated from Albizzia julibrissin Durazz. by using column chromatography (macroreticular resin, silica gel, Sephadex gel, reverse phase silica gel),preparative HPLC methods et al.On the basis of spectroscopic analysis, including IR,ESI-MS,~1H-NMR,~(13)C-NMR,HMBC,HMQC,~1H-~1HCOSY and chemical methods, the structure of two new compounds were identified as 3 - O -[β-D-xylopyranosyl(1→2)-β-D-fucopyranosyl (1→6)-β- D -2- deoxy - 2 - acetoamidoglucopyranosyl] -21-O-[(6S)-2- trans- 2,6-dimethyl - 6 - O-β- D - quinovopyranosyl -2,7- octadienoyl] - acacic acid- 28 - O-β-D-glucopyranosyl(1→3)[α-L-arabinofuranosyl(1→4)]-α-L-rhamnopyranosyl(1→2)-β-D-glucopyranoside acacic acid 3- O -β- D- glucopyranosy(1→3)-β- D- fucopyranosl(1→6) [β-D- xylopyranosyl (1→2)]-β-D-glucopyranoside ;two known compounds were acacic acid lactone 3- O -β-D- xylopyranosyl-(1→2)-β-D-fucopyranosl (1→6)- 2-deoxy -2 -acetoamido -β-D- glucopyranoside ; acacic acid lactone 3- O-β-D-xylopyranosyl(1→2)-α-L- arabinopyranosl (1→6)- 2- deoxy - 2- acetoamido -β-D-glucopyranoside . The study lays chemical foundation and chemical reference substance for enhancing quality standard of Albizzia julibrissin Durazz.

本研究论文在综述国内外对合欢属Albizzia三萜皂苷化学成分和药理作用研究进展的基础上,利用传统植化分离手段和现代分离技术,包括大孔树脂、硅胶、葡聚糖凝胶、反相硅胶等柱色谱,制备高效液相色谱法等技术从中药合欢皮中分离得到了4个化合物,其中,2个新化合物和2个己知化合物,并进一步通过现代分析技术IR,ESI-MS,~1H-NMR,~(13C-NMR,HMBC,HMQC,~1H-~1HCOSY等和化学方法鉴定了2个新化合物的结构分别是:3-O-[β-D-吡喃木糖基(1→2)-β-D-吡喃夫糖基(1→6)-β-D-2-去氧-2-乙酰氨基吡喃葡萄糖基]-21-O-[(6S)-2-反式-2,6-二甲基-6-O-β-D-吡喃鸡纳糖基-2,7-辛二烯酸基]-金合欢酸-28-O-α-L-呋喃阿拉伯糖基(1→4)[β-D-吡喃葡萄糖基(1→3)]-α-L-吡喃鼠李糖基(1→2)-β-D-吡喃葡萄糖苷,金合欢酸3-O-β-D-吡喃葡萄糖基(1→3)-β-D-吡喃夫糖基(1→6)[β-D-吡喃木糖基(1→2)]-β-D-吡喃葡萄糖苷;2个已知化合物结构分别是:金和欢酸内酯3-O-β-D-吡喃木糖基(1→2)-β-D-吡喃夫糖基(1→6)-β-D-2-去氧-2-乙酰氨基吡喃葡萄糖苷,金和欢酸内酯3-O-β-D-吡喃木糖基(1→2)-α-L-吡喃阿拉伯糖基(1→6)-β-D-2-去氧-2-乙酰氨基吡喃葡萄糖苷。

The metabolites of endophytes fungus was developed with 2D-TLC, and antibacterial active components was detected and tracked by bioautography of Bacillus subtilis model and TTC coloration. Result: The results showed that the development system screening was easy, and antiblastic spot was accurate and limpid.

以二维薄层色谱将金钱松内生真菌代谢产物样品展开,以枯草芽孢杆菌为指示菌,氯化三苯四氮唑为显色剂,采用培养基覆盖生物自显影技术对其抗细菌活性成分进行检测、追踪。

In section three, the conception of the Peterson graph is incited and the fractional chromatic number and the chromatic number of one kind of them are given.

在第三部分中介绍了当k=2时的广义Peterson图的概念,给出了其中一类图的分数色数以及顶点色数。

This invention applies mild condition uses substituent group triphenylamine aldehyde or triphenylamine dialdehyde as raw material to react by heating with 2-(5,5-dimethyl-3-vinylcyclohexenyl-2-enylidene)propanedinitrile group to produce the intermolecular charge transfer chromogen with high decomposition temperature, non-coplanar structure, and triphenylamine group.

本发明采用温和的手段,将取代基三苯胺单醛或取代基三苯胺双醛为原料与2-(3,5,5-三甲基环己烯-2-烯亚基)丙二腈共热生成具有高的热分解温度、非共平面空间结构的含三苯胺基团的分子内电荷转移生色团。

The synthesis of 4,5,7-trichloroquinoline makes use of ethyl orthoformate, cyanoacetic ester and 3,5-dichloroaniline as the raw materials. The synthesis is completed by four steps: condensation, cyclization, hydrolyzation and chlorination. Several conditions concerned in the process are studied, the whole yield of 4,5,7-trichloroquinoline is about 53%, and the purity of it is about 96%. All the products are testified by IR, NMR and HPLC.

介绍了以3,5-二氯苯胺、原甲酸三乙酯和氰乙酸乙酯为原料,经过缩合、成环、水解和氯代4步反应制备4,5,7-三氯喹啉的方法,对相关的试验条件进行了考察,通过红外光谱、核磁共振谱和液相色谱对4,5,7-三氯喹啉的结构和纯度进行表征和测定,试验结果为4,5,7-三氯喹啉的纯度大于96%,总收率达到53%。

Shenzhen high-wing Technology Co., Ltd. is mainly engaged in three-color phosphors and LED decorative lighting products and sales. 1992 high-wing technology trichromatic phosphors begin mass production, the company trichromatic phosphors in the domestic production industry, the first in the use of nitrogen, hydrogen precursors to protect the production of ultra-high-temperature tunnel furnace trichromatic green powder and blue powder, the first technology would be Jet Milling for phosphor production, enhance production of the first color phosphor of bimodal powder blue. High-wing technology in 2004 began producing LED lighting products have been developed, including LED string lights, cup lights, bubble lights, tube lights, LED lights×, LED signs, lights, cast ray lamp, underwater lamp, rainbow tubes and LED flashlight series of applications and achieve bulk export the European Union, the United States, Australia, Africa, Asia and other countries, in the domestic market has volume applications.

深圳市企荣科技有限公司主要从事三基色荧光粉和LED装饰、照明制品的生产和销售。1992年企荣科技开始批量生产三基色荧光粉,公司在国内三基色荧光粉生产行业中最先使用氮、氢气体保护超高温隧道炉生产三基色绿粉和蓝粉,最先将气流粉碎技术用于荧光粉的生产,最先生产出提高荧光粉显色性的双峰蓝粉。2004年企荣科技开始生产照明光源LED的相关产品,现已自主研发了包括LED串灯、杯灯、泡灯、管灯、LED字灯、LED指示牌灯、投光灯、水底灯、彩虹管及LED手电筒等系列应用产品,并已实现批量出口欧盟、美国、澳洲、非洲、亚洲等国家,在国内市场已经批量应用。

Generally speaking, if the RGB version, Black Edition version the subtractive primary colors halftoning relatively long, black plate halftoning relatively short, the two gradient natural interface to give the feeling of continuous full; if the black-and-white and color reproduction Halftoning is longer (4 editions of total-order increases more than 360%), the business card printing and membership card of the effect of making products more likely to occur in the mirror, laodelphax, and is not conducive to the polychromatic, high-speed business card printing and membership card; if the black version and the version on the tricolors of halftoning shorter (yellow, magenta, black pteroceltis 30, 80, four editions of halftoning cannot is shorter than the 240%), the business card printing and membership card making products more likely to occur on the effect of, thin, image density contrast, hue, uncontinuously, spacious icing on the cake is not enough.

一般讲,如果以三原色版为主,黑版为辅,三原色版阶调相对要长,黑版阶调相对要短,两者阶调自然衔接,给人以连续完整的感觉;如果黑版和三原色阶调都长(四个版总阶调长超过360%),制卡和会员卡制作品的效果容易产生灰、平、闷,而且不利于多色高速制卡和会员卡制作;如果黑版和三原色版阶调都短(黄50、品红50、青30、黑80,四个版阶调总长不能短于240%),制卡和会员卡制作品的效果容易产生浅、平、薄、图像密度反差不均,色调不连续的感觉,立体感、空间感不够。

A detailed discuss in selection of detector, chromatographic column, method of preconcentration in gas chromatographic determinations, which is the most practical technique among analysis of sulphur-containing compounds, and prospects of analytical testing techniques for volatile organic sulfur in water are presented in this paper. Contents

气相色谱技术是测试该类物质的实用技术,从检测器的选择、色谱柱的选择和预富集方法三个方面详细介绍了采用气相色谱分析水中微量挥发性有机硫化物过程中遇到的主要问题和解决方法,并展望了水中微量挥发性有机硫化物分析测试技术的发展方向。

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Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气,收缩臀部肌肉;拱起身体,尽量抬起头来,右腿伸直朝向天花板(膝微屈,以避免肌肉紧张)。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化,但却比去年同期高8%。

However, to get a true quote, you will need to provide detailed personal and financial information.

然而,要让一个真正的引用,你需要提供详细的个人和财务信息。