二钙

In the wet-process phosphoric acid production from the Hubei phosphate ore, one of the bothersome problems is that potassium fluosilicate and sodium fluosilicate scales are liable to form on the filtration system owing to its high potassium and sodium content, which greatly restrains the application of Hubei phosphate ore.

本文首先采用人工冷却系统模拟湿法磷酸生产的真空过滤系统冷却过程，研究垢物的析出规律，实验结果得知：垢物的主要成分为氟硅酸钠和氟硅酸钾，氟硅酸钠首先析出，结构致密，其次是氟硅酸钾，最后是二水硫酸钙，氟硅酸钠对氟硅酸钾有很强的结晶诱导作用；然后在三种生产中常用的不同的材质钼二钛、聚氯乙烯和聚四氟乙烯表面进行结垢试验，发现聚四氟乙烯表面最不易结垢，而在钼二钛表面最易结垢。

Results:The incidence of hypocalcemia in FDP group was 64.10%, and the one in nonFDP was 15.58%.

结果：：1， 6二磷酸果糖组低钙发生率64.10%，非果糖组低钙发生率15.58%，，用四格表资料的χ2检验，果糖组与非果糖组的χ2=38.01，P.05，两组比较差异有统计学意义。

There are two stages in the collapse of CaSiO_3 perovskite under decompression: the breakage of SiO_6 octahedron and the breakage of CaO_(12) icosahedron.

钙钛矿型CaSiO_3解压缩成非晶态时，存在两个结构破坏阶段：破坏硅氧八面体和破坏钙氧二十面体。

The results indicate that the addition of ESPS could inhibit the growth of calcium oxalate monohydrate and induce the formation of calcium oxalate dihydrate crystals.

结果表明，添加ESPS能抑制一水草酸钙的生长，同时诱导二水草酸钙晶体的形成。

Objective To explore the therapeutic efficacy of combination of calcium disodium chelate, trace tlements misture and calcium gluconate for the treatment of chronic plumbism.

目的 探讨依地酸二钠钙(CaNa2EDTA)联合微量元素合剂及葡萄糖酸钙对慢性铅中毒的治疗效果。

Identified by various methods such as X-ray powder method, infrared analysis and D.T.A., microscopic studies,they are found to be composed almost entirely of one rare mineral, brushite CaHPO_4·2H_2O, while some of them may contain a small amount of another rare mineral,monetite CaHPO...

样品的室内测试鉴定工作，由季寿元、方金满、唐玉梅三人完成；成因问题的探讨，则以陈、王二人的意见为主合作写成。经初步研究，确定结石的主要成分为CaHPO_4·2H_2O，相当于矿物中的透磷钙石，在个别样品中尚有少量的三斜磷钙石CaHPO_4存在。

Results show that C_(2)AS in high-alumina cement with CACA_(2)C_(2)AS system can be transformed into the Q phase when adding MgO and abundant CaO after calcined at high temperature.

结果表明：高铝水泥系统中的C2AS，在加入MgO和系统补钙的条件下，经过高温煅烧能够转化为Q相，高铝水泥系统CA 二铝酸一钙(CA2) C2AS变化为Q相CA C12A7.Q相CA C12A7的烧成温度为1 260~1 300 ℃，保温时间为30~60 min。

Nowadays, the medicines using for the prevention and treatment of osteoporosis incluae:(1) medicines using for resisting bone absorption, such asestrogen, calcitoin, biphosphonates etc;(2) medicines using for promoting osteogenesis: fluoride;(3) calciferous medicine and vitamin D;(4) traditional chinese medicine and chinese drugs.

目前，用于预防和治疗骨质疏松症的药物主要有(1)抗骨吸收药物：包括雌激素、降钙素、二磷酸盐等；(2)促进骨形成药物：主要指氟化物；(3)钙制剂和维生素D；(4)中医中药。

PAM can induce the formation of calcium oxalate dihydrate crystals and change the morphology of COD and calcium oxalate monohydrate crystals.

PAM可以诱导二水草酸钙晶体生成并改变COD和一水草酸钙晶体的形貌。

The effect of various preservative flukd with or without antagonists at 15℃ and 4℃ on the ultrastructure of fetal rat brain tissue in vitro hak been observed. The levels of oxygen free radical and liperoxide were also analysed by measuring SOD and MDA.

观察了室温与4℃条件下，含钙拮抗剂和不含钙拮抗剂的不同保存液对胎鼠脑组织超微结构的影响；并利用超氧物岐化酶和丙二醛为指标，观察了不同保存液保存的离体胎鼠脑组织中自由基和脂质过氧化水平的变化。

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。