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The combination of dilute sulfuric acid and organic solvent has been developed to demulsify the highly stable polystyrene microemulsion. 2. The degree of sulfonation was quantified based on the infrared spectra. 3. The superfine sulfonated polystyrene particles and the crosslinked polyvinyl alcohol films imbedded SSPS particles were employed to conduct out the adsorption for cationic red dye (5GN), and showed a satisfied results.

本课题的特色与创新之处: 1、独创了采用稀H2SO4和有机溶剂对聚苯乙烯微乳液混合破乳的方法; 2、基于红外光谱测量,定量计算出聚苯乙烯磺化度; 3、在国内外较早地开展了超细聚苯乙烯型离子交换树脂及其离子交换膜对阳离子染料的吸附作用的研究。

In this process, the electrolylic bath with cationic exchange membrance and leas electrode is used. The cathode liquor is oxalic acid, the anode liquor is diluted sulfuric acid. The process above has following advantages with high yield, top quality, lower cost, no "three wastes" pollution, and no oxalic aldehyde in the product. It is a cleaner and environment-friend technology, and is a development trend for production of glyoxalic acid. Complete analytical process for raw materials, intermediate and final products were established.

本论文通过对乙醛酸合成路线的研究,确定了草酸电解法制乙醛酸的工艺路线,此法采用装有阳离子交换隔膜和铅电极的电解槽,阴极电解液为草酸溶液,阳极电解液为稀硫酸,该工艺具有产品收率高、质量好、成本低、无三废污染、产品中无乙二醛等特点,是一条清洁、绿色工艺,是生产乙醛酸的主要发展方向。

Now, a convenient, efficient pinacol coupling of aldehydes mediated by zinc in good yields has been carried out in ammonia water in the presence of a little crown ether. Adding a small amount of crown ether was highly effective to enhance the yields of pinacol from 63% to 84%.

本文报道一种简便、有效的水相呐偶合反应,它是在含有少量冠醚的稀氨水溶液中,使用锌粉促进醛基化合物进行水相呐偶合反应,其中加入少量的冠醚有助于提高反应的产率,呐醇产率由63%提高到84%。

For the sake of developing an effective, safe and no pollution disinfectant to reduce or eliminate food-borne pathogens on shell eggs, the bactericidal activity of neutral electrolyzed water (NEW, pH 6.0-7.5) generated by electrolysis of diluted hydrochloric acid in a non-membrane electrolytic cell for inactivation of Salmonella pullorum, Escherichia coli O157:H7 and artificial inoculated shell eggs initial logarithm of population of two pathogens on the eggs were approximately 6.19-6.26 log10 (cfu/g and 6.12-6.19 log10 respectively was evaluated.

为寻求一种高效、安全、无污染的禽蛋清洗消毒剂,采用无隔膜电解装置电解稀盐酸溶液制备中性电解水(pH值6.0~7.5)考查不同有效氯浓度、处理时间和温度条件下中性电解水对鸡蛋人工接种鸡白痢沙门氏菌(Salmonella pullorum,鸡蛋表面的初始菌落数对数为6.19~6.26 log10)和大肠杆菌O157:H7(鸡蛋表面的初始菌落数对数为6.12~6.19 log10)的杀灭效果。

Then, nanoparticles were prepared with a reprecipitation method and tested. We found that the nanoparticles with small size and lower poly-dispersion index can be prepared though shortening deposited time, decreasing concentration, increasing deposited temperature and adding surfactant.

利用二次沉淀法制备出三种有机分子不同粒径的纳米微粒,通过改变时间、浓度、温度、表面活性剂等实验条件分析这些因素对纳米微粒粒度的影响,发现缩短放置时间、减少有机稀溶液的注入量、升高放置温度、加入表面活性剂可以得到小粒度,低分散度的纳米微粒。

The high concentration of salt treatment and the thin alkaline treatment both of whom are used in extracting ribonucleic acid from waste beer yeast were studied in this work.

本文对浓盐法和碱法提取啤酒废酵母中的核糖核酸技术进行了研究,并对这2种方法进行了比较和优化,提出了浓盐法与稀碱法相结合提取核糖核酸的工艺技术路线,酵母中核糖核酸的提取率达90%以上,样品的纯度达90.3%。

The optimal harvest time,preserving the green,boiling and technique of preserving the brittleness of Mongolia Scorzonera was studied.

研究了蒙古鸦葱的采收时机,护绿、烫漂和保脆技术,实验表明:选择叶龄在18~20d采收,在浓度为0.2%的稀碱溶液中浸泡30min保绿,烫漂温度98℃、时间叶柄1.5min、叶片0.5min,在烫漂液中加入0.15%的氯化钙保脆等措施,解决了产品速冻时的褪色、质地变软等问题。

The findings of the newly identified goose paramyxovirus strain GPMV/HBexperimental infection were as follows: The challenge caused high morbidity and highmortality.The clinical signs included severe depression, decreased appetite or anorexia,white,yellow and green diarrhea, with neural symptoms;pathological changes showed thathaemorrhage and ulceration of intestine mucosa, necrosis of spleen and pancreas,andedema of liver and kidney, uratic deposition in kidney.Eosinophilic inclusion bodies werefound in the cytoplasm of pancreas and a large quantities of fiber protein were found inintestine. Lots of hemosidefin was found in some area of liver and kidney. A number ofT、B lymphocytes reduced sharply in spleen,lymph nodes in dead geese. Transmissionalelectron microscope showed that some cells had the morphological characteristics ofmitochondria swelling, morphological changes were condensation of nuclear chromatininto dense masses,followed by its marginating against the nuclear envelope, andespecially concentration of cytoplasm association with lots of lipid droplet.

人工感染雏鹅实验中,雏鹅临床表现为高发病率和高死亡率,食欲和饮水减少,拉白色、黄绿色稀粪,伴有神经症状;常规组织学观察,脾脏和胰腺肿大,有白色坏死斑点,肠道出血和坏死,肝脏肿大变性,肾脏肿大变性有尿酸盐沉着等;用特殊染色和组织化学方法首次对人工感染鹅副粘病毒的雏鹅的重要脏器进行研究,结果表明:胰腺中发现病毒包涵体,肠道中大量纤维素以及胶原纤维增生,肾脏、肺脏大量含铁血黄素沉着,免疫器官如脾脏和淋巴结中T、B淋巴细胞大量减少;电镜下多种细胞呈现线粒体水肿,多种实质细胞的染色质固缩,染色质边集,特别是细胞内容物如脂肪滴增多的病理变化特征。

The result is in fruit ripe season, adjacent county uses the " of " inferior goods that urges fruit agent in succession with high price successful work off, and the yangtao with this county good quality is " instead desolate pommelled horse is rare before the door ".

基于保护市场的考虑,周至县政府于去年投入大量的人力财力禁止果农使用催果剂。结果在果熟季节,邻县使用催果剂的&劣质品&纷纷以高价顺利售出,而该县品质优良的猕猴桃反而是&门前冷落鞍马稀&。

Malt removed impurity in the hopper is feeded into spray machanism from the outlet of hopper, and hot water of 60-65℃ is sprayed evenly and at the same time, the wet material is feeded to suply machanisam in order to suply malt Plumule at suitable temperaure and quantity to the kibbling, mat shell can be maintained intergrity and plumule is kibbled into size. While kibbing , some water is added into te size and the size is pumed into the saccharifying pot

将料斗内除杂的麦芽,由料斗出口进入喷湿机构,以60-65摄氏度热水对其均匀地喷湿,并同时将湿料输送给供料机构,使供料机械能连续不断地为粉碎辊提供温度为宜,数量相当的麦芽胚,以保证粉碎辊正常工作,麦芽经粉碎后,麦皮保持破而不碎,胚乳磨成浆料,在粉碎的同时加一定的清水,随之搅拌调稀泵入糖化锅。

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Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

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