硫酸

The immunoregulation activity of SPG-1 mainly existed in the part of sugar chain, but keeping its molecular structure intact had some effects on its immunoregulation activity; SPG sulphation had reducing effects on the immunoregulation of SPG-1, whereas, after medium and low acetification of SPG, the immunoregulation of SPG was enhanced. Conversely after high acetification, the immunoregulation of SPG-1 decreased, that is, after introducing sulfuric and acetic acid base in SPG-1, its immunoregulation changed. All of these indicated the structure of SPG-1 was closely connected with its immune activity.⑤.

甘薯糖蛋白SPG-1的免疫调节活性主要在其糖链部分，但保持分子结构的完整性对其免疫调节的活性有一定的作用；甘薯糖蛋白硫酸化对甘薯糖蛋白SPG-1的免疫调节有降低作用，而中、低度乙酰化后，可提高甘薯糖蛋白的免疫调节作用，高度乙酰化后则降低其免疫调节作用，即甘薯糖蛋白引入乙酰基和硫酸基团后，其免疫调节活性发生了改变，这些均表明了甘薯糖蛋白的结构与其免疫调节活性有密切的关系。

The modified calcium sulphate whiskers were characterized with activation index,contact angle,SEM and IR spectrum analysis,and the results indicated that the borate surfactant SBW-181 has go...

建立了硼酸酯表面活性剂SBW-181与硫酸钙晶须的作用模型。得出的结论对硫酸钙晶须表面改性的工业化生产具有重要的指导意义，并为硫酸钙晶须的应用研究奠定了理论基础。

We measured the temperature rise at the central point, and then calculate the weight of calcium sulphate theoretically under both conditions. We compared the calculated results with those from experiment and found good agreement between them, as the difference is within our expectation.

将实际反应中得到的硫酸钙晶体质量与理论计算得到的硫酸钙晶体质量进行了比较，其重量吻合较好，说明两种加热条件下从相同的初时温度加热到相同的末温实际反应中得到的硫酸钙晶体质量差异合理。

It contains one of the worlds highest concentrations of minerals: magnesium sulphate, calcium and sodium sulphates, plus eight other minerals and traces of four more, including silver and titanium.

斑点湖的湖水是全世界矿物质含量最高的湖水之一：硫酸化镁，硫酸化钙和硫酸化纳，还有另外八种矿物质和暂不确定的其他四种元素，其中包括银和钛元素。

The calcium sulfate was dissolved and led to the rapid increase of calcium ion concentration in the solution. So the calcium sulfate is not suitable for being seed crystal of low-salt concentration. The quartz sand and calcium carbonate both can be used as seed crystals, but it is much faster and more complete to use calcium carbonate as seed crystal compared with using quartz sand.

当硫酸钙加入处理液中发生了硫酸钙溶解现象，导致溶液钙离子浓度迅速增加，故硫酸钙不适合做低浓度盐水的晶种，而石英砂和碳酸钙均能对钙离子的结晶起到效果，但碳酸钙做晶种对钙离子的结晶更快捷、更彻底，在条件允许的情况下，采用碳酸钙做晶种为宜。

To obtain sulphuric acid, Cyrus Harding had only one operation to make,to calcine the sulphate of iron crystals in a closed vase, so that thesulphuric acid should distil in vapor, which vapor, by condensation, wouldproduce the acid.

赛勒斯·史密斯制造硫酸的最后一道工序，是把硫酸铁的结晶密封在瓶子里，进行锻烧，使之蒸发为水汽，经过冷却，就可以变成硫酸了。

I plant perennial supply of chemical plating material: nickel sulphate, chloride nickel, nickel nitrate, ammonium chloride, sodium hypophosphite, sodium citrate, ammonium citrate, potassium citrate, chromium oxide, red Lead oxide, palladium chloride, SnCl2, crystal tin tetrachloride, the resistance of fuse, lithium fluoride, sulfuric acid cadmium, Na2HPO4, bismuth chloride, bismuth oxide, oxide Thallium sulfate Cobalt, cobalt nitrate, cobalt chloride, barium hydroxide, calcium hydroxide, fine chemical products.

我厂常年供应化学镀材料：硫酸镍、氯化镍、硝酸镍、氯化铵、次亚磷酸钠、柠檬酸三钠、柠檬酸三铵、柠檬酸钾、三氧化铬、红色氧化铅、氯化钯、氯化亚锡、结晶四氯化锡、电阻熔断剂、氟化锂、硫酸镉、磷酸氢二钠、氯化铋、三氧化二铋、三氧化二铊、硫酸钴、硝酸钴、氯化钴、氢氧化钡、氢氧化钙等精细化工产品。

The traditional techniques of sulphuric acid production operate in steady state. The sulphur dioxide made from the sulphur or sulphur pyrite is converted into sulphur trioxide in one or more catalyst beds in a stationary converter.

传统的硫酸生产工艺是将硫磺或硫铁矿通过焙烧制得含SO〓的烟气，送入一段或多段定态转化器，将SO〓转化成SO〓，用浓硫酸吸收其中的SO〓制成硫酸。

The physical,chemical character and usage of magnesium sulphate were introduced in this paper,the production method and process of magnesium sulphate were also expounded.

介绍了硫酸镁的物理、化学性质和用途，阐述了硫酸镁的生产方法及工艺流程：硫酸法，盐湖苦卤法，苦卤复晒法，高温盐溶浸法，震荡转化法，碳酸化法，二氧化硫催化法。

In this technology the polysaccharide sulfate product having excellent bioactivity is produced with the cotton abounding in the nature as the raw material and through simple chemical reaction. The size and degree of sulfate group substitution of the produced polysaccharide sulfate ester are controllable.

本技术直接利用自然界大量存在的棉花，经简单的化学反应制备具有优良生物学活性的多糖硫酸酯，制备的多糖硫酸酯分子大小可控制、硫酸基团的取代度可控制。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。