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The experimental results showed that in the acid condition the polymerization rate decreased in acetic acid media, and the contents of species Sia and Sib were increased.

实验表明:在酸性氛围下,当有乙酸化合物存在时,聚硅酸溶液中的硅酸组分与钼酸反应的速率总是要比不含乙酸时的大得多;溶液中存在的Sia和Sib形态均表现出不同程度的增加。

Hyphae, loaded with CTC under pH 6. 8 condition and then grown in pH 8. 0 medium for a little while to destroy the apical acidification, could gave very diffuse fluorescence images of CTC membrame bound Ca〓 and vermiform fluorescence spots due to mitochondrias under pH 6. 8 no longer were clearly distinquished, which implied that besides mitochondrias, other cellular organelles with Ca〓 also were stained with CTC. Thus mitochondrias are not the only one intracellular Ca〓 storage, endoplasmic reticulums and Golgi bodies in the same zone may be also the Ca〓 storages. But the extreme apical zone under 2μm of the growing hyphal tip was still almost devoid of stain under pH 8. 0.The CTC fluorescence was concentrated in the subapic zone beyond about 2μm from the tip and then gradually became lower behind about 40μm from the tip. These results did not support the hypothesis which suggested that the cell wall vesicles in the extreme apical zone were intracellular Ca〓 storages.

将菌丝在pH6.8条件下负载CTC,再置于pH8.0培养介质中短暂生长一会儿以消散菌丝顶端的酸化区域,则CTC膜结合Ca〓呈现弥散的荧光影像,在pH 6.8培养条件下显示的蠕虫状的线粒体荧光斑点不再能够清晰辨认,说明除了线粒体之外,还有其它含Ca〓细胞器,也被CTC染色,线粒体并不是细胞内唯一Ca〓库,还可能包括内质网、高尔基体等细胞器,但菌丝最顶端2μm以前的细胞壁泡囊区域不能被染色,最大荧光强度仍位于菌丝顶端2μm以后区域,约45μm以后荧光变弱,实验结果不支持细胞壁泡囊为菌丝胞内Ca〓库的假设。

Experimental results show that the incorporation of appropriate amounts of Al~2O~3 into SO~4^2^-/ZrO~2, SO~4^2^-/TiO~2 and SO~4^2^-/Fe~2O~3 is helpful for stabilizing the sulfur species and increasing the effective acid sites on the catalyst surfaces, which can improve the strong acidity and catalytic activity in benzoylation.

实验表明,向SO~4^2^-/ZrO~2,SO~4^2^-/TiO~2和SO~4^2^-/Fe~2O~3中引入适量的Al~2O~3,有助于稳定样品表面的含硫物种,增加样品表面的有效酸位,提高样品的强酸性和对甲苯的苯甲酰化的反应活性。

Stone is from rock, and rock is consist of the mineral, the mineral contain iron is the source of the iron in stone products , iron element spread widely in natural world, but most of them appear to be compound, iron element is belong to medium activity metal, under high temperature is easily to be strongly acted with oxygen, sulfur, chlorine, and easily dissolve in abio-weak acid solution and strong hydrochloric acid solution, at the same time, the strong alkali solution also corrade the iron.

石材是岩石经加工后所产生的制品,岩石是由矿物组成的,其中含铁矿物是石材中铁质的来源。铁元素在自然界中分布甚广,但大多以化合物的方式出现,由于铁元素属中等活泼性的金属,在高温下易和氧、硫、氯等元素发生强烈反应,并易溶于无机稀酸和浓盐酸的溶液中,同时浓碱溶液也易侵蚀铁。

At the same time, it can enhance utilization rate of phosphorus for monogastric animals and solve environmental problems as well.Three linearized DNA fragments without selectable marker gene and vector backbone were constructed containing phyA gene with regulation sequences or T-DNA borders or the plasmid borders.

我们构建了仅含有启动子序列、植酸酶基因和终止子序列的线性基因转化元件及其两端分别带有T-DNA边界序列或一段载体序列的不同线性转化元件,不含选择性标记基因和载体骨架序列,采用花粉管通道法对选定的玉米品种进行转化,共计收获的可以检测的种子为20400粒。

The results show that: 1 the transfer enthalpies Δ_(trH of amino acids in the five oxacid salts solutions are positive except L-alanine in aqueous Na_2SO_4 solutions.

不同的氨基酸从水到同浓度的含氧酸盐水溶液中的迁移焓的差异取决于氨基酸侧链的性质。

In the thesis, a series of novel single and multi-armed oxadiazole bridging ligands and pyridyl-4, 5-imidazole dicarboxylic acid ligands have been synthesized. The coordination chemistry of these novel ligands with transition metal ions was investigated. In addition, two 1, 3, 4-oxadiazole bridging ligands end-capped by chelating Schiff-base coordination sites have been designed and synthesized. The coordination chemistry based on one of the two ligands with metal ions was primarily investigated.

本文报道了一系列新颖的含1, 3, 4-Oxadiazole杂环的单臂及多臂有机配体,研究了它们与过渡金属离子的配位反应化学;合成了吡啶基-4,5-咪唑二羧酸有机配体,研究了它们在水热条件下与过渡金属离子的配位反应化学;另外,还合成了1, 3, 4-Oxadiazloe杂环桥联的双Schiff-base有机配体,初步探讨了其与过渡金属离子的配位反应化学。

A novel polymer of Poly(diglycidyl maleate-co-stearyl methacrylate) was synthesized and its structure was characterized by ~1H NMR. Its self-assembly behavior was studied in different solvents. It was found that vesicles and tubule-liked aggregates can be obtained through self-assembly of P(DGMA-co-SMA)/THF/EtOH system. And spheral aggregates were obtained in P(DGMA-co-SMA)/THF/H_2O system while the spheral aggregates were converted into rod-liked aggregates and line-liked aggregates after aged for different time.

合成了带含环氧基侧链和十八烷基侧链的聚(马来酸二缩水甘油酯-co-甲基丙烯酸十八酯),用~1H NMR对所得的共聚物进行了表征;研究了其在选择性溶剂中的自组装行为,发现P(DGMA-co-SMA)/THF/EtOH体系可以通过自组装形成囊泡形自组装体和支化的管状自组装体,P(DGMA-co-SMA)/THF/H_2O体系最初自组装形成球形自组装体,随着陈化时间的延长,球形自组装体逐渐融合成长条形自组装体和线形自组装体;探讨了自组装过程的机理,建立了可能的自组装过程模型。

Twelve new Schiff bases of 5-amino-1H-1,2,3,4-tetrazolyl were synthesized. These Schiff bases were further converted into α-(5- tetrazolyl)-aminoalkyl phosphonates.

合成了12个新的5—氨基—1H—1,2,3,4—四唑的Schiff碱,而后与亚磷酸二乙酯反应,合成出了12个新的含四唑基的α-氨基烃基膦酸酯,通过IR,^1H NMR,^31P NMR和元素分析证实了它们的结构。

First of all, the relationship between concrete strength、 acidified depth and the solution density of SO_4~(2-)、H~+, marinating period and concrete initial strength before marinating is established with dimension analysis method.

首先,本文通过量纲分析的方法确定了混凝土的强度和酸化深度与浸泡液的SO_4~(2-)离子浓度、H~+离子浓度、浸泡时间和混凝土初始强度之间的含有待拟和系数的函数关系式。

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