酸化的

Methods: the spiral modiolar artery in guinea pig cochlea was exposed by microsurgery, then the fluorogold or horseradish peroxidase was given around the sma for retrograde tracing. the bilateral superior cervical ganglia and stellate ganglia were observed to find retrogradely labeled neurons. the neurotransmitters of these sympathetic fibers around sma were ascertained by using retrograde tracing combined with immunohistochemical double labeled technique.

在正常豚鼠单侧耳蜗螺旋蜗轴动脉局部滴加逆行追踪剂辣根过氧化物酶或荧光金，观察双侧交感颈上神经节、星状神经节内hrp或fg逆标神经元的分布；采用逆标与免疫组化相结合的双重标记方法观察追踪阳性神经元是否表达酪氨酸羟化酶、神经肽y、钙基因相关肽或p物质。

A selenious acid type solution of better performance was obtained by the test of polarization curve, the test of corrosion resistance and the test of duration life.

研究改进了现行的钢铁件常温黑化工艺，通过极化曲线测试、耐蚀性测试、寿命测试得到了性能良好的常温亚硒酸体系黑化液。

Inorganic-organic hybrids were prepared by combining Schiff base complexes of manganese with silicotungstic acid. The composition and structure of the hybrid L^1-Mn-SiW (L^1: N, N'-disalicylidene-1, 6-hexanediamine) were characterized by infrared spectroscopy and thermogravimetry.

将席夫碱锰配合物与硅钨酸结合制备出一种新颖的无机－有机杂化固体催化剂，通过红外光谱和热重表征数据推测出这种催化剂的组成和结构，并将其用于磷酸与等摩尔月桂醇酯化制备长链单烷基磷酸酯。

Described in chapter 3 is the immediate application of the Clemmensen reductive rearrangement reaction to the polycyclic system as illustrated in a elaboration of the 5-6-7 tricyclie core skeleton of Stemona alkaloids in 5 steps: N-alkylation, [3, 2] -sigmatropic rearrangement, Dieckmann condensation, oxidative cyclization, reductive rearrangement, starting from ethyl pipecolinate hydrochloride.

我们以哌啶酸乙酯为起始原料，经氮烷基化，[3，2]-σ重排，Dieckmann缩合，自由基环化，6-6-6元环系到5-6-7元环系的还原重排五步反应，高收率地构筑了百部生物碱的5-6-7氮杂三环骨架，并用X射线晶体衍射法确定了其结构。

The contents of total organic carbon and humic acid carbon in the soil from stone pit were markedly higher than that of the soils from rocky ditch, swallet or stone cavern.

结果表明：喀斯特石漠化区阔叶林土壤有机总碳含量和腐殖酸碳含量明显高于灌木林、灌草丛和稀疏草丛，而土壤水溶性有机碳含量的变化则相反；喀斯特森林退化后，土壤有机碳的累积量减少、流失量增加；喀斯特小生境土壤有机总碳和腐殖酸碳含量存在明显的水平空间变异：石坑＞石沟＞石缝＞石洞。

To elucidate the possible mechanism of differentiation and /or apoptosis in NB4, K562 cells induced by tributyrin, a histone deacetylase inhibitor, the level of acetylated histone H3 was detected by Western blot, p21~ WAF1expression was detected by semi-quantitative RT-PCR.

为了探讨组蛋白去乙酰化酶抑制剂三丁酸甘油酯(tributyrin，TB)诱导NB4、K562白血病细胞分化和凋亡的作用机制，利用Westernblot方法及逆转录聚合酶链反应检测TB作用前后NB4、K562细胞组蛋白H3乙酰化水平以及p21WAF1表达量的改变。

To elucidate the possible mechanism of differentiation and/or apoptosis in NB4, K562 cells induced by tributyrin, a histone deacetylase inhibitor , the level of acetylated histone H3 was detected by Western blot, p21(superscript WAF1) expression was detected by semi-quantitative RT-PCR.

为了探讨组蛋白去乙酰化酶抑制剂三丁酸甘油酯(tributyrin， TB)诱导NB4、K562白血病细胞分化和凋亡的作用机制，利用Western blot方法及逆转录聚合酶链反应检测TB作用前后NB4、K562细胞组蛋白H3乙酰化水平以及p21(上标 WAF1)表达量的改变。

The morphological variation characteristics of resin acid ,as well as titration correction of the unsaponifiable matter during rosin saponification were discussed theoretically.

研究了在脂松香分析测定过程中影响松香不皂化物含量测定的关键因素及其影响机理，讨论了树脂酸在皂化过程中的形态变化特征及其导致不皂化物需要进行树脂酸校正操作和计算的理论依据。

The content of this thesis is divided into four chapters. Chapter one introduces the serine octamer including the formation of this magic number cluster and the strong preference for homochirality and the possibility of its importance related to the prebiotic chemistry.

在本论文中，第一章介绍质子化丝胺酸团簇，其中的丝胺酸八聚体於质谱中具有强度异常高的现象，且被认为可能与生命起源有关，因而其结构成为大家所极欲探究的主题。

The 3565 cm-1 band, on the other hand, progressively decreases in intensity with increasing n and it disappears completely at n = 8, suggesting that the protonated serine octamer is dominated by zwitterionic structures.Chapter four gives a conclusion.

当此团簇的丝胺酸数目渐多时，第一根吸收峰（3565 cm-1）的高度则随著渐减，直到八聚体时这根吸收峰完全消失，证明了质子化丝胺酸八聚体在气相状态下的结构是以两性离子为主。

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。