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In borate or phosphate buffered NaCl solutions with a constant total concentration of borate or phosphate, E_ increases with an increase in pH. With the increase of the concentration of chloride ions, E_ decreases markedly in the test solutions. Moreover, the buffer capacity and concentration of nonaggressive anions in the test solutions also exerts some effects on the crevice corrosion of Type 304 stainless steel. Furthermore, the cooperative inhibition effect of the environmental factors on crevice corrosion was investigated. The potential of crevice corrosion E_(cc shows a strong dependence on a parameter J, which was called as general environmental factor and defined as the product of concentration of nonaggressive anions, pH, buffer capacity and concentration of chloride ions.

在含NaCl 的硼酸或磷酸盐缓冲溶液中,在相同的缓冲溶液总浓度下,E_c随pH 值增加而增加;但随着氯离子浓度的增加,E_c显著降低;另外缓冲容量及其阴离子对304 不锈钢缝隙腐蚀也有影响;最后实验研究了这些环境影响因素的协同影响规律,得出环境综合影响因素参数J,J 由pH 值、缓冲容量、氯离子浓度及其缓冲溶液中其它阴离子浓度定义,缝隙腐蚀电位与参数J 有好的线性关系。

MRS2 encode a magnesium transporter protein in Saccharomyces cerevisiae and deletion of MRS2 gene results in decrease in mitochondrial magnesium concentration, Group II RNA splicing defect and growth defect on nonfermentable carbon source.

MRS2 基因编码线粒体镁离子转运蛋白,MRS2缺失会导致酵母线粒体镁离子浓度下降、线粒体内II型内含子剪接缺陷和非发酵碳源上的生长缺陷。

To obtain more information of magnesium homeostasis in mitochondria, mTn-lacZ/LEU2 transposon library was transformed into mrs2 deletion mutant to screen for suppressor genes of MRS2. YMR166C, a member of mitochondrial carrier family, was identified as a suppressor gene of MRS2. Deletion of YMR166C gene can rescue the defects of mrs2 deletion mutant such as the decrease in mitochondrial magnesium concentration, Group II RNA splicing defect and growth defect on nonfermentable carbon source. For the first time we demonstrated YMR166C is involved in mitochondrial magnesium homeostasis.

为了增进对线粒体镁离子代谢调控基因的了解,利用酿酒酵母mTn-lacZ/LEU2转座子文库筛选MRS2的抑制基因,发现线粒体载体家族成员YMR166C基因的缺失可以挽救MRS2基因缺失的突变体的生长缺陷、II型内含子剪接缺陷,并可以调节线粒体镁离子浓度,首次发现YMR166C是线粒体镁代谢相关基因。

The ru1es of crystal parameters varing with the scale of nonfreedom were found out. Spectrum series were theoretically interpreted as well.

经过初步研究表明,金属蛋白中,金属离子与氨基酸结合,可以通过金属离子和氨基酸配合物的结构得到指示。

Cell membrane nonpermeable inhibitor of calmodulin, W7_agarose, and the anti_serum of calmodulin could decrease the cytosolic calcium level. The results show that the endogenous extracellular calmodulin may play an important role in maintaining and increasing the cytosolic calcium level in pollen grain cell.

不能透过细胞膜的钙调素拮抗剂W7_agarose和植物钙调素抗血清处理都可以使花粉细胞质中游离钙离子浓度降低,表明内源细胞外钙调素可能在维持和促进花粉细胞质中游离钙离子方面具有重要作用。

Applying the Large-scale multi-configuration Dirac-Fock wave functions, we calculated the parameters such as wavelength, oscillator strengths and excited energy for the transitions related to lightning spectra. The most important effects of relativity, correlation, and relaxation are included in the computational model. Comparison of the calculated results with experimental spectra shows that the spectra in plateau area have a distinctive characteristic. Beside the lines of lower excited state with n=3 in NII ions, transitions of NI and OI are increased, their excited energy is around 13~14eV, and there are rarely lines from OII ion.

将原子结构的理论应用於闪电光谱的研究,用多组态Dirac-Fock方法,计算了有关光谱线的波长、振子强度以及相应的激发态能量等参数,理论与试验观测资料进行比较分析后发现,高原地区闪电首次回击光谱的结构及跃迁特性与其他地区有明显的区别,除NII离子n=3的低激发态产生的跃迁谱线外,激发能量为13~14eV左右的中性NI和OI的跃迁增多,但很难观测到OII离子的跃迁谱线。

A pplying the Largescale multiconfiguration DiracFock wave functions, we cal culated the paramete rs such as wavelength, oscillator strengths and excited energy for the transitio ns related to lightning spectra. The most important effects of relativity, corre lation, and relaxation are included in the computational model. Comparison of th e calculated results with experimental spectra shows that the spectra in plateau area have a distinctive characteristic. Beside the lines of lower excited state with n=3 in NII ions, transitions of NI and OI are increased,their excited energy is around 13~14eV, and there are rarely lines from OII ion.

将原子结构的理论应用于闪电光谱的研究,用多组态DiracFock方法,计算了有关光谱线的波长、振子强度以及相应的激发态能量等参数,理论与试验观测资料进行比较分析后发现,高原地区闪电首次回击光谱的结构及跃迁特性与其他地区有明显的区别,除NII离子n=3 的低激发态产生的跃迁谱线外,激发能量为13~14eV左右的中性NI和OI的跃迁增多,但很难观测到OII离子的跃迁谱线。

The article has researched occupation of ions in jadeite, diopside and omphacite in jadeite jade on the base of 222 components data. The author has calculated all theie formula and testified that ∑ and ∑ should be positive correlation.

以222点电子探针的化学成分为依据,研究了翡翠中重要组分矿物硬玉、绿辉石和钠铬辉石的离子占位,离子间交换规律等,着重讨论了透辉石—绿辉石—硬玉固溶体系列的类质同象替换,并通过对所有成分点的晶体化学式的计算,验证了∑与∑呈正相关等理论。

And some problems and prospect are also pointed out for these organoboron compounds used in the field of fluoride ion probes.

最后提出了有机硼化合物作为氟离子探针存在的一些问题,并展望了有机硼化合物在氟离子探针领域的研究和发展方向。

The new opinion and mechanism that the simultaneously adsorption of complex pollution of both organic and heavy metals will be achieved on soil modified with amphoteric surface modifying agent, which have both charged group and organophilic group on one ASMA molecule, were proposed at first time, and its rationality was testified at the same time; The 50% was the critical CTMAB modifying ratio of soil CEC at which the organophilic bond modifying mechanism was emerged; The thermodynamic characteristics of adsorption of OPT and HMP on OMS were discovered ; The study revealed the surface peculiarity of OMS that the modifying agent were distributed at uneven scatter mode and multi-characters surface were coexisted on surface of OMS, revealed the adsorption peculiarity of OMS that multi-mechanisms were coexisted, confirmed the unequal charge amount modifying mode of OMS in which dual-modifying mechanism of both ion exchange and OPB were processed at the same time, and confirmed that the adsorption hobby to CTMAB was higher than that to Ca2+ on Lou soil.

首次提出了用两性表面修饰剂对土壤进行修饰改性,利用两性表面修饰剂所具有的荷电基团和疏水基团达到对土壤中有机、重金属污染物同时吸附的思路和机理,并通过实验证实了所提设想的合理性;发现了土壤CEC值的50%修饰比例是CTMAB开始显现以疏水键机制对土土样表面进行修饰的临界点;揭示了有机修饰改性土对有机物、重金属吸附过程的热力学特征,填补了该项研究工作的空白;阐明了修饰剂在改性土表面呈分散态的非均匀分布,改性土表面具有不同性质表面共存的表面特征和对污染物多机制共存的吸附特征,确定了阳离子表面修饰剂在土表面的修饰是一种离子交换和疏水键结合两种机制相伴并行且为非等电荷量交换的修饰反应模式,以及土具有对CTMAB的吸附偏好性远大于对钙离子吸附偏好性的特征。

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With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。

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