使氧化

Analysis f K and Na in nepheline were curried out with higher precision and repeatability by means of adding fluohydric acid during sample melting to remove SiO2, adjusting the ratio of K and Na in the solution to reduce the mutual interference of the two elements, and adding cesium chloride to eliminate ionization interference.

摘要本方法用于测定霞石中的钾、钠，主要通过在溶样时加入氢氟酸除去二氧化矽，调整溶液中钾、钠的含量，消除互相之间的干扰，加入氯化铯消除电离因素的干扰，提高了分析结果的准确性和重现性，使测定结果更接近化学分析值。

Thus study for neurotransmitter dopamine and small molecular drugs is a problem of critical importance in the field of neurochemistry and biomedical chemistry.

表明ARE 使DA 和AA 的氧化峰得到了很好的分离，在pH 5.72 的溶液中峰位差ΔEpa，1为200mV，在pH 1.98 的溶液中峰位差ΔEpa，2达到230mV，实现了DA 和AA 共存时的同时测定。

amino-1,4-naphthoquinones failed to be obtained through the classical routes due to the strongly electron-withdrawing nitro group, which deactivating the nucleophilic ability of the nitro anilines.

2-硝基苯胺-1，4-萘醌类衍生物由于硝基的强吸电性使硝基苯胺的亲核性减弱，不能通过经典的加成-氧化或加成-取代的方法合成得到。

Getting adequate amounts of protein is crucial to supporting your muscles and keeping your body in a positive nitrogen balance.

服用适量的蛋白粉，使身体保持正氮平衡，并有助于减少运动诱发的氧化压力

Cytotoxic effect was demonstrated with nitrogen mustard, nitromin, sarcolysin, thio-TEPA and myleran at concentrations of 7, 10, 25, 35, 100, and 100μg/ml respectively.

氮芥及氧化氮芥在7—10微克/毫升，溶肉瘤素和新恩必恨于25—35微克/毫升，三乙酰硫代磷酰胺和丁二醇二甲磺酸酯在100微克/毫升，都出現了显著的細胞毒作用，使細胞很快死亡溶解；但6-巯基嘌吟和氨基喋吟未表現作用。

Because of the nondirectional property of ionic bond and the fully delocalized property of pi electrons on carbon layers, translation will not change the electronic structure of carbon layers, resulting in that A-GIC and AE-GIC hare quite good lubrication as well. The electrons come from metals mainly transfer to the delocalized pi orbitals of carbon layers, and the increase of delocalized electrons will make metal graphite intercalation compound more electro-conductive than graphite itself. Because ionic bond between metals and carbon layers is weaker and its lattice energy is much less than that of typical NaCl crystal, so metals could be left from interlayers. The Mulliken populations of C-C in intercalation compounds are smaller than that of graphite, and the HOMO energy level of GIC is higher than that of graphite too. These Lead to that GIC will easier be oxidized.

由于离子键没有方向性，又由于碳层中的π电子是充分离域的，所以碳层不会由于平移而改变其电子结构，金属石墨层间化合物仍具有很好的润滑性；金属失去的电子主要转移到碳层的离域π轨道中，碳层离域电子增多使金属石墨层间化合物的导电性比石墨增强；金属与碳层间的离子键强度比较弱，其晶格能远小于典型的离子晶体，因而金属易从石墨层中脱出；金属石墨层间化合物中的C-C间Mulliken布居值小于石墨中C-C间的值，且金属石墨层间化合物的HOMO能级也高于石墨的HOMO能级，所以石墨层间化合物中的碳原子较石墨更易被氧化。

In short period of time, there is no obvious noxiousness and no obvious concentration-dependent effects of HAP on liver slices, but it could induce antioxidative enzyme activity of slices.

短期内HAP对肝切片无明显毒性作用，不表现浓度效应差异，可使肝细胞抗氧化酶活性升高。

After tiny amount of platinum was deposited onto the NPG substrate,not only the structure stability of NPG was greatly improved,but also the Pt-Au bimetallic catalysts displayed the better catalytic activity and the stronger poison resistance towards the electrooxidation of small or...

如在NPG基体再沉积微量的铂，不仅明显改善了NPG的结构稳定性，而且由于Pt、Au两组分之间的协同效应而使该催化剂对有机小分子的电催化氧化具有比纯铂更高的催化活性和更强的抗催化毒物能力。

T exist in solitary; some of T. t in oppositeness; the number of T. t in the form of chain is more than that of T. f; both T. f and T. t can be seen in thick growth. The size of T. t is a slightly bigger than that of T. f, the ends of T. f is somewhat blunt, while the ends of T.

此外还运用紫外诱变育种方法，将经适当紫外诱变处理的T.f正突变菌株用于浸矿，可提高细菌的亚铁氧化能力，使铜浸出率提高10％左右。

Preferential oxidation of Ti on NiTi alloy surface has been observed and was consistent with the experimental result and the free energy of formation A G?(298K) of NiO, TiO, TiO2. Mulliken population and the partial density of state analysis showed that the interaction between Ti and O atoms was mainly donated by O 2p and Ti 4s orbital and O 2p and Ti 3d, 4s, 4p hybridization orbital. The electron structure in NiTi bulk material was not altered during 62 molecule adsorption process and the surface passivation oxide formation.

进一步对钛与氧之间相互作用本质的研究表明，O 2p轨道和Ti 4s轨道以及O 2p轨道和Ti 3d 4s 4p杂化轨道间的相互作用是NiTi合金表面氧分子吸附的驱动力，在此过程中，NiTi合金的体相结构没有发生变化，从而保证了其一系列力学性能和形状记忆特性在表面氧化后不发生明显的变化，使表面改性的工作可以安全、可靠的完成而不影响其植入人体后发挥正常的生理功能。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。