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The Dichondra Repens forst polysaccharides was extracted by ultrasonic wave in different temperatures (20, 40, 80, 100℃) and water-bath and followed by water extraction and ethanol precipitation with sevag method to excise the protein.

比较不同温度条件下超声水提-醇沉和加热回流水提-醇沉提取马蹄金多糖的效率,再分别用Sevag法去蛋白制得粗多糖,从而确定一种马蹄金多糖提取的最适方法。

Dungaree ,men's or boys', of textile materials, not knitted or crocheted

男式或男童粗蓝布工装裤,非针织或钩织纺织材料制

A new recovery technology of solid waste was made which is from furfuryl alcohol production by furfural hydrogenization. When the solid waste is placed in a vacuum drying box, and is under lower negative pressure and at 130℃, the organic materials in solid waste can be distilled and then returned to the refining workshop to produce qualified furfuraldehyde and furfuryl alcohol. The remainder is mixed with soda ash and roasted in a reverberating furnace. The sodium chromate can be obtained by leaching. Rough cupric oxide is dissolved in nitric acid and cupric nitrate is obtained. A new catalyst was prepared by the above sodium chromate and cupric nitrate and used in furfuryl alcohol production.

将糠醛液相加氢生产糠醇产生的废渣置于真空干燥箱中,在较低的负压状态下保持130℃的温度,蒸馏回收废渣中的有机物,返回糠醇精制车间获得合格的糠醇与糠醛产品;剩余的固体废弃物与纯碱混合,在反射炉中焙烧,浸取获得铬酸钠水溶液;最后剩下的粗氧化铜溶于硝酸得到硝酸铜溶液;将铬酸钠溶液、硝酸铜溶液按一定比例混合,加入氨水搅拌,分离出的沉淀经传统方法焙烧活化、造粒制得新催化剂,回用于糠醛液相加氢生产糠醇。

Then Mara the Evil One, taking on the form of a farmer with a large plowshare over his shoulder, carrying a long goad stick — his hair disheveled, his clothes made of coarse hemp, his feet splattered with mud — went to the Blessed One and, on arrival, said, Hey, contemplative.

随后恶魔变化成一个农夫的外形,去到世尊那里,他肩上担著一个大犁头,手里拿著一根长刺棒──他的头发蓬乱,衣服是粗麻制的,他的脚沾满泥巴。到了之后便说:「嗨!

Early thousands years ago, the probability of biological process of soda ash from sodium sulfate was revealed in Egyptian Wadi Naturn sediments. Every year the crude sesquioxide alkali crystallized and collected from the lakes was roughly the amount of the sulphate brought and reduced by the incoming river water.

早在几千年前的埃及Wadi Naturn沉积岩中便向人们揭示了芒硝生物制碱的可能性,每年从这些湖里结晶和采收的粗倍半碱与进水带入并产生还原的硫酸盐的量大致相当。

She was sensibly dressed in tweed s.

她穿着实用的苏格兰粗呢制衣服。

Horizontal belt pulp washer This product is the main equipment of the washing system of unscreened pulp in pulping and paper making factory which is used for pulp washing and waste liquor extraction.

水平带式洗浆机,本产品是制浆造纸厂粗浆洗涤系统的主要设备,供洗涤纸浆及提取废液用。

Chemiluminescent immunoassay is one of the advanced immunoassay ofnon-radioisotopic immunoassay because of its high sensitivity, wide dynamic range,high accuracy, stable labeled protein, full automation and extensive application field.CLIA using acridinium ester derivatives as chemiluminescent label has advantages oflow background, high signal-to-noise ratio, no need of catalyst and simpleluminescence system. Different aspects associating the DMAE·NHS-based CLIA were studied in thisthesis, including synthesis of acridinium ester, chemiluminescentcharacteristics of DMAE·NHS, labelling antibody or streptavidin with DMAE·NHS,two-site sandwich chemiluminescent immunoassay for TSH, two-sitesandwich chemiluminescent immunoassay involved biotin-streptavidinsystem for TSH, and competitive chemiluminescent immunoassay usingbiotin-streptavidin system for TT〓. The desired acridinium ester, DMAE·NHS, was synthesized according to thereference method with some modifications. The products were identified by IR, NMR,MS and elemental analysis. In our method, KOH was used in place of NaOH tosynthesize benzyl ester of 3,5-dimethyl-4-hydroxybenzoic acid,2',6'-dimethyl-4'-(n-succinimidyloxycarbonyl) phenyl-acridinium-9-carboxylate waspurified on a silica gel column with chloroform/ethylacetate(4:1, v/v) as eluent andfurther purified by triturating with hexane/acetone(2:1, v/v).

DMAE·NHS的合成是本论文的关键和难点,我们对文献方法进行改进:文献方法用氢氧化钠与3,5-二甲基-4-羟基苯甲酸反应制得3,5-二甲基-4-羟基苯甲酸钠,再用3,5-二甲基-4-羟基苯甲酸钠与苄氯作用制备3,5-二甲基-4-羟基苯甲酸苄酯,我们用氢氧化钾代替氢氧化钠,使合成取得成功;在合成2',6'-二甲基-4'-苯基-吖啶-9-甲酸酯时,文献方法对粗产品进行两次硅胶柱层析纯化,第一次柱层析用氯仿/乙酸乙酯(4∶1,V∶V)作溶剂和淋洗剂,第二次柱层析用己烷/丙酮(2∶1,V∶V)作溶剂和淋洗剂,按照文献方法得到的不是所需要的化合物,我们只进行第一次柱层析纯化,然后用己烷/丙酮(2∶1,V∶V)进行研磨,过滤,洗涤,除去溶于己烷/丙酮(2∶1,V∶V)的部分,得到所需要的产品。

Using benzyl chloride and chlorine as starting materials, benzal chloride is prepared through photo-chlorination in loop reactor.

采用环流反应器、以氯化苄和氯气为原料进行光氯化反应,制备苄叉二氯;将制得的苄叉二氯粗品进行真空精馏得到高纯度的精品;然后用一种新型醇胺类相转移催化剂,分别以盐酸和水作为介质,在 90~ 110℃水解后得到了高纯度的苯甲醛。

Take advantage of this computer bolographic to design business card printing and membership card making graphic, as a result of very fine per mm up to 1000 lines and full of randomness, thus making it difficult to imitation.

诳骗这栽筹算机全息来安排制卡和会员卡制作图不神,由于否常粗忽,每毫米可达1000 众条线并带有随机性,不陈很难步武。

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However, as the name(read-only memory)implies, CD disks cannot be written onorchanged in any way.

然而,正如其名字所指出的那样,CD盘不能写,也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口,替代木托盘,免薰蒸,符合欧盟、北美各国对出口货物包装材料的法令要求;喷涂钢托盘适用于重载上货架之用,托盘表面根据需要制作成平板状、波纹状及间隔形式,满足不同的使用要求。

A single payment file can be uploaded from an ERP system to effect all pan-China RMB payments and overseas payments in all currencies.

付款指令文件可从您的 ERP 系统上传到我们的电子银行系统来只是国内及对海外各种币种付款。