多酸的

Sulfuric acid, which is much stronger, is so corrosive that it is seriously damaging to the human skin.

硫酸则是强得多的酸，具有很大的腐蚀性，会严重损伤人的皮肤。

a cyanotype mi the gua fasten h2 is stop by body, have a strong nti- sour secrete a function.this text elaborateds its toxicity reaction from 8, though has many poison side effect, still don't lose to one safety stronger medicine, clinical with extensive application, want ～only full understanding, attention observation, ability decrease poison side effect reaction of occurrence.

甲氰咪胍系h2受体阻断剂，有强大的抗酸分泌作用。本文从八个方面阐述了其毒性反应，尽管有诸多毒副作用，仍不失为一安全性较强的药物，临床以广泛应用，只要充分了解，注意观察，能减少毒副作用反应的发生。

The results indicate that these two cysteine residues are directly responsible for DNA binding capacity.

在这次研究中，我们发现突变后的蛋白除了C43S外，其余的DNA结合利皆下降，尤其以C46S以及C64S下降最多，证实了这两个位置的胱氨酸与DNA结合有关。

Effect of heat treatment on the ndcrophase separation of a segmented poly copolymer based on poly diol, 3, 5 dithyltoluene diandne and 4,4'-diphenylmethane diisocyanate has been studied bymeans of fourier transform infrared spectroscopy.

用傅里叶变换红外光谱方法研究了热处理对由聚环氧丙烷聚醚多元醇、3.5－二乙基甲苯二胺和4，4－二苯基甲烷二异氰酸酯组成的多嵌段聚氨酯脲的微相分离行为的影响。

Results of XRD,SEM,and UV-Vis indicated that ZnS nanocrystals can grow in and fill in the void of opal template,and SiO2 microspheres of templates are dissolved so as to form some three dimensional ordered porous structure and to form the inverse opal ZnS photonic crystals. Compared with opal templates,ZnS-opal and inverse opal ZnS photonic crystals assembled with SiO2 spheres in the same diameter show good optical properties and exhibited photonic band gap. The photonic band gap position of inverse opal ZnS moves towards UV area compared with opal and ZnS-opal.

结果表明：溶剂热法多次充填可使ZnS纳米晶在模板密堆积形成的空隙中均匀成核；经过酸处理的ZnS-opal中SiO2微球溶解、坍塌，形成蜂窝状三维有序介孔和反opal结构ZnS基光子晶体；相同粒径SiO2微球组装的opal模板、ZnS-opal以及反opal结构ZnS光子晶体均表现出光子带隙特性，但反opal结构ZnS光子晶体带隙位置相比前两者发生了蓝移。

To clarify the relationship between myelination and the expression of PSA-NCAM we systematically investigated its expression in the human forebrain from embryonic stage to midgestation (19-24 gestation weeks, gw).

为明确多聚唾液酸-神经细胞黏附分子的表达和髓鞘形成之间的关系，研究者系统地研究了从胚胎期到妊娠中期它在人前脑中的表达。

SAMe appears to raise levels of dopamine, an important neurotransmitter in mood regulation.

蛋氨酸似乎提高多巴胺的水平，调节情绪的一个重要的神经递质。

Virulence test demonstrated that the recombinant AHL-Lactonase has a strong anti-pathogenic activity to Erwinia cawtovora, and the addition of AHL-Lactonase to the medium of pathogen could reduced the activity of pectate lyase, prctin lyase, cellulase and polygalacturonase after 20h.

致病性检测表明，重组AHL-Lactonase对胡萝卜软腐病菌具有较强的抗病活性，在致病菌培养基加入AHL-Lactonase培养20h之后，培养基上清之中果胶酶(pectate lyase and prctin lyase，PL)、纤维素酶(cellulase，Cel)和多聚半乳糖醛酸酶(polygalacturonase，PG)的活性都存在不同程度的减小。

Compound 3 showed a significant inhibitory effect on release of β-glucuronidase rat polymorphous nuclear leukocytes activated by platelet activating factor.

另外，化合物3对PAF刺激的小鼠多形核白细胞β-葡糖苷酸酶的释放具有明显的抑制作用。

It was found that sulfuric acid, 2-naphthalenesulphonic acid and sulfurous acid could be effectively separated by competitive exchange adsorption in views of action force difference of the components with the resin. The exchange adsorption dynamic diffusion parameters were calculated with diffusion equation for solids and liquid films, and the rate-determining step was determined. The model of breakthrough curve for the resin bed was suggested, and applied to simulate the breakthrough process for each component.

通过单组分、双组分和多组分平衡数据的测定，发现对于硫酸-萘磺酸-亚硫酸混合体系，可以利用不同组分与树脂作用能的不同，通过竞争交换吸附实现分离；以固相扩散方程和液膜扩散方程对交换吸附动力学参数进行了估算，确定了交换吸附过程的控制步骤；建立了床层穿透曲线模型，并对各组分穿透过程进行了模拟。

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。