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The molar ratio of sulfate ions to carboxylate ions is determined by conductometric titration method and the molecular weight is tested by high performance gel permeation chromatography. The precision of these two methods is also studied. To improve the detection sensitivity, guanidine hydrochloride is used as the best derivation reagent of 911. A systematic research is done on the optimum derivatization condition of 911 and Guanidine hydrochloride. The M /G ratio of 911 has direct relation to its biological activity.

论文首先对911的基本理化性质进行了系统的分析，以电导滴定法和高效凝胶渗透色谱法分别测定了分子中硫酸根羧酸根的比值和911的分子量，并探讨了两种分析方法的精密度。911分子没有紫外吸收，为提高检测灵敏度，本文采用荧光标记法，通过对三种荧光试剂与几种寡糖和多糖衍生效果的综合比较，最终确定了盐酸胍为最佳衍生试剂，并以911为代表详细探讨了衍生化反应的最优条件。911糖链结构与褐藻胶主链结构类似，以甘露糖醛酸和古罗糖醛酸的嵌段形式存在，分子中M/G比值与911的物理化学性质和生物活性有直接关系。

Extraction of high-quality RNA from Panax ginseng tissues is particularly difficult due to high levels of polyphenolics and polysaccharides, or other compounds that bind and/or coprecipitate with RNA. The methods such as guanidinum thiocyanate, CTAB and modified Trizol were applied to isolate high purity and integrity RNA from Panax ginseng.

针对人参组织多酚、多糖类物质含量较高的特点，比较了改良的异硫氰酸胍法、改良的CTAB法和改良的Trizol法等3种不同的RNA提取方法。3种改良的方法均能从人参组织中提取到总RNA。

It was studied to substitute vegetable gelatin (guar pectin, konjaku pectin, coumaric pectin) for starch in producing sausage, simultaneously, adding a calculated amount of soya protein and prandial fibre to make the functionality and trophism of the final products.

主要研究植物胶胍胶、魔芋胶、香豆胶替代淀粉在灌肠制品中的应用，同时加入适量的大豆蛋白和膳食纤维，增加灌肠制品的功能性及营养性。

Using large sample DNA of capacity technology, the maize high lysine content of SSR mark analyse technological platform has been established in this paper. The main results are as follows: the five comparing research methods of drawing maize DNA mark have shown that the method of iso- sulphur cyanic acid guanidine drawing maize genome DNA has the superiority of using less medicine, operating sequence more simple , faster, and costs lower , steady and reliable quality of DNA, etc..Utilizing this method , one person can draw 300-400 DNA samples each workday.lt indicates that the method can be used in SSR marker of maize,.

本文从大样本容量的DNA快速提取技术入手，初步建立了玉米高赖氨酸含量的SSR分子标记分析技术平台，获得的主要结果如下：对五种玉米DNA提取方法的比较研究认为，异硫氰酸胍法提取玉米基因组DNA，具有使用药品少、操作步骤简单、快速、成本低、DNA质量稳定可靠等优点，利用该方法，每人每个工作日可以提取300～400个DNA样品，可以在玉米SSR标记分析中应用。

Ingredients:Aqua, caprylic capric triglyceride,*carthamus tinctorius oil(hi-oleic safflower oil),*aloe barbadensis,*pure essential oils of cymbopogon nardus and cymbopogon schoenanthus,*calendula officinalis,*yucca aloifolia extract,*rosa centifolia water,*rosa moschata oil,*cereus grandiflorus extract,*acacia concinna extract,carrageenan,tocopherol,*phospholipid,polyaminopropyl biguanideextremely mild non-invasive preservative

成分：水，辛酸癸甘油三酯，*红花油，*巴巴多芦荟，*精香茅和蔺花香茅的纯精油，*金盏菊，*芦荟叶丝兰提取物，*洋蔷薇香水，*麝香玫瑰油，*大花仙人掌提取物，*含羞草提取物，卡拉胶，维生素 E，*磷脂，聚氨丙基双胍（极其温和的非损伤的防腐剂

RESULTS Duodenal ulcer was the first cause of upper gastrointestinal hemorrhage. Gastric ulcer, cirrhosis, Mallory-Weiss syndrome or acute gastric mucous lesion was the second cause of the illness alternatively. The rate of endoscopy and emergent endoscopy has been going up year after year and got up to 80% in 1998. Bleeding and active hemorrhage, respectively were found in 24.3% and 14.9% of the patients underwent endoscopy before medication. Endoscopic hemostasis was performed in 108 patients by spraying hemostatics and a good response was achieved subsequently. Hemostatics were mainly cimetidine and yunnan baiyao before 1994. Reptilase, pPI, famotidine and ranitidine were used increasingly while cimetidine and yunnan baiyao were used decreasingly. Octreotide was used in patients with cirrhosis commonly. The length of hospital stay and the period from admission to bleeding cease tended to be shorter year by year, but the reduction rate was small. The uses of ranitidine, famotidine, pPI, reptilase, octreotide, early endoscopy and endoscopic therapy may play a role in improving the therapeutic effect of hemostasis, reducing the hospitalization and the mortality.

结果 十二指肠球部溃疡是历年上消化道出血的首要原因，胃溃疡、肝硬变、Mallory -Weiss综合征、急性胃粘膜病变则交替成为第2位出血原因；内镜诊断率和急诊内镜率逐年提高，1998年达到80%，内镜下见出血者占内镜检查的24.3%，而见到活动性出血者仅占内镜检查者的14.9%；内镜下止血108例次，成功率100%；1994年前治疗药物主要为云南白药和甲氰咪胍，之后，随着立止血、质子泵抑制剂、法莫替丁、雷尼替丁等药物使用的逐渐增多，前二者的使用逐渐减少，善得定多用于肝硬变出血；住院天数和止血天数呈逐年下降的趋势，但幅度微小；雷尼替丁、法莫替丁、PPI、立止血、善得定的使用以及及时的内镜检查和内镜下治疗在提高止血效果、缩短住院天数、降低死亡率方面可能起到了一定作用。

ABSTRACT : Objective To establish a HPLC method for determination of impurity dicyanodiamide and impurity(1) and impurity(2) in Metformin hydrochloride and Glibenclamide Tablets.

目的建立 HPLC 方法测定复方盐酸二甲双胍格列苯脲片中已知有关物质双氰胺杂质(1)和杂质(2)的含量。

Factory engaged in medicine, veterinary medicine, agricultural chemicals and raw materials development and production of intermediates, the series of export products: 2,2 - bipyridine, 2,6 - dihydroxy toluene, propiconazole intermediates, phenol line P , Fluometuron, fluorine pyronaridine oxadiazon, oxadiazon pyronaridine fluorine intermediates, Robenidine hydrochloride and so on.

本厂从事医药、兽药、农用化学品原料药及中间体的研制与生产，系列出口产品：2，2-联吡啶，2，6-二羟基甲苯，丙环唑中间体，酚线磷，伏草隆，氟咯草酮，氟咯草酮中间体，盐酸氯苯胍等等。

The possible unfolding pathway of the dimeric TIM was discussed.

在低浓度盐酸胍存在下，TIM的热稳定性降低。

Keywords: diphenylguanidine; molecular imprinting; solid-phase extraction; environmental samples

该法用于环境水样和底泥等环境样品中二苯胍的选择性分离富集，回收率达101%~105%，相对标准偏差为

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。