硝酸

The effect of additives on synthesis of xonotlite fiber with nano diameter is studied using industrial lime and quartz powder,selecting calcium chloride,strontium nitrate,zirconium oxychloride as additives.

采用工业石灰和石英粉，选用氯化钙、硝酸锶、氧氯化锆为添加剂，研究添加剂对合成纳米直径硬硅钙石纤维的影响，结果表明，几种添加剂均对生成硬硅钙石纤维有一定的帮助，加入适量的氧氯化锆添加剂，可以制备出纳米直径的硬硅钙石纤维，氧氯化锆的添加量为Zr4+/(Ca2++Si4+)=0.02时，可获得结晶良好、直径为70～100 nm的硬硅钙石纤维。

Minutes later, 0.1 ml/kg of 1.5 mg/kg strychnine nitrate was administered i.p.

目的 测定氯胺酮抗硝酸士的宁小鼠惊厥的ED50。

After it was adjusted with ammonia until the test paper turned purple,in subacid medium of pH 6～7 ammonium acetate buffered solution,bivalent nickel was precipitated quantificationally by dimethylglyoxime.

试样以稀硝酸溶解高氯酸冒烟后，酒石酸掩蔽剂将铁等干扰元素配位掩蔽，以氨水调节至刚果红试纸呈紫色后，在pH6～7的乙酸铵缓冲溶液微酸性介质中，二价镍定量地被丁二酮肟沉淀。

Objective:To evaluate sublingual isosorbide dinitrate before tilt test in the diagnosis of unexplained syncope.

目的：探讨倾斜试验和硝酸异山梨醇酯舌下含化倾斜试验在不明原因晕厥诊断中的价值。

Ambient conditions that include toxic gases such as hydrogen sulfide, sulfurous acid, nitrous acid, chlorine, bromine, methyl bromide, ammonium, etc.

b 周围环境中有氢化硫、亚硫酸、亚硝酸、氯气、溴气、溴化甲烷、氨气等有毒气体。

Technology of synthesis of 2, 4, 8-trichloronitrobenzene by 1, 3, 5-trichlorobenzene, sulphuric acid and nitric acid was studied.

以1， 3， 5-三氯苯为原料，在浓硫酸与浓硝酸的作用下硝化成2， 4， 6-三氯硝基苯。

According to classical nucleation theory, it was possible to distinguish the homogeneous and heterogeneous nucleation from the influence of temperature and supersaturation on induction period.

本文根据经典均匀成核理论，分别研究了硝酸酸沉和盐酸酸沉制备的四钼酸铵过饱和溶液的成核过程，并讨论了过饱和比和温度对成核速率及成核机制的影响。

The grafting rate and surface charge density of the pulp increased when the amount of ceriumammonium nitrateinitiator increased from 2% to .

实验结果表明，当引发剂硝酸铈铵的用量从2%提高到8%时，纸浆的接枝率和阳离子表面电荷密度稳步提高；进一步提高引发剂的用量，纸浆的接枝率和阳离子表面电荷密度变化平坦。

Two symptomless TMV mutants named TMV-O 17 and TMV- 152 respectively were obtained by treatment of heating, heating and nitrous acid combination.

通过高温处理、亚硝酸诱变及两者的复合处理对强毒株TMV-W进行诱变，筛选获得了两个弱毒株，记为TMV-017、TMV-152。

Results］In 108 patients (93.1%) routinely took antiplatelet drug orally;75 patients (64.7%) common took ACEI orally; 82 patients (70.7%) usually took beta-blocker orally; only 39 patients (33.6%) insisted on taking lipid-lowering drug orally;26 symptomless patients long-term took orally nitrate;24 symptomless patients long-term took Calcium antagonists.

结果］ 108例（93.1％）患者常规口服抗血小板药物，存在主要问题是部分患者用量偏低；75例（64.7％）患者服用ACEI；82例（70.7％）患者常规口服β-受体阻滞剂，心率达标率为39％；只有39例（33.6％）患者坚持服用调脂药；26例患者无症状长期口服硝酸酯类药物；24例患者长期口服钙通道阻滞剂。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。