亚硫的

The research and status of non-cyanide electroless gold plating using sodium sulfite and/or hyposulphite as complexing agent are described in detail.

详细阐述以亚硫酸钠及硫代硫酸钠为配位剂的无氰化学镀金的研究及发展现状。

A new photochromic organic compound of thiosemicarbazone, 4-( p -bromo-α-methylaminothiocarbonyl hydrazonobenzal)-2,5-dihydro-3-methyl-5-oxo-1-phenyl pyrazole, was synthesized and characterized by elemental analyses, IR, 1H NMR spectra, and X-ray single-crystal diffraction analysis.

文章合成了一个新的有机化合物1-苯基-3-甲基-4-对溴苯亚甲基-吡唑啉酮-5 缩甲基氨基硫脲(1)，并分别用元素分析、红外光谱、氢核磁共振及X-射线单晶衍射对化合物的结构进行了确证和表征。

By using single factor test, the growth behavior of Thiobacillus ferrooxidan preserved in the lab is studied.

采用单因素实验研究实验室分离的氧化亚铁硫杆菌的生长特性。

It is researched about the department of thiobacillus ferrooxidans and soaking phosphorus by experimentations.

本文主要是通过实验对氧化亚铁硫杆菌的分离纯化以及浸磷的初步研究。

Based on the model of Monod function inhibited by products,the growth kinetics equation of Thiobacillus ferrooxidans at high iron concentration was built up.

依据产物抑制的Monod方程，推导并建立了氧化亚铁硫杆菌在高铁浓度下的生长动力学方程。

The effects of pH value, temperature, the initial concentrations of Fe(superscript 2+) and Fe(superscript 3+) as well as the interaction between these factors on the growth of thiobacillus ferrooxidans were investigated by orthogonal tests.

通过正交试验考察了温度、pH值、初始Fe(上标 2+)浓度及初始Fe(上标 3+)浓度这4个因素以及这4个因子之间相互作用对氧化亚铁硫杆菌的生长速度的影响。

The invention relates to a pipeline polyurea outer anticorrosive coating and the making method thereof, making heated prepolymerization reaction on dibenzo-methane diisocyanate, carbodiimide diisocyanate, polyether binary alcohol and polyether trihydric alcohol to prepare prepolymer solution A, and making end amino polyethylene oxide ether, dimethyl sulfur-based toluene diamine, diethyl diamine, iso-propyl titanate solution, polyacrylate, carbon black, titanium dioxide and lightweight calcium carbonate into solution B, and as using, respectively heating the solutions A and B to 65 deg.C and then mixing them, then quickly spraying and curing to form a coat.

本发明涉及一种管道用聚脲外防腐涂料及制造方法，由二苯基甲烷二异氰酸酯、碳化二亚胺化二异氰酸酯、聚醚二元醇和聚醚三元醇通过加热预聚反应制成预聚物的A液、由端氨基聚氧化乙烯醚、二甲硫基甲苯二胺、二乙基甲苯二胺、钛酸异丙酯溶液、聚丙烯酸酯溶液、碳黑、钛白粉和轻质碳酸钙配制而成的B液组成，使用时将A液和B液分别加热至65℃后混合，然后快速喷涂固化形成涂层。

Auxin response factor is an important transcription factor for auxin signal transduction pathway. In order to identify the function of cotton auxin response factor GhARF3, some bioinformatics methods were used to analyze GhARF3 gene sequence, including BLAST analysis, domain analysis, phylogenetic tree analysis, the physical and chemical properties analysis of protein, hydrophobicity analysis, disulfide bonds analysis, phosphorylation site analysis, secondary structure and tertiary structure prediction, and subcellular localization and protein functional classification analysis.

运用生物信息学方法对棉花GhARF3基因序列进行BLAST分析、结构域分析、进化树分析、编码蛋白质的理化性质分析、疏水性分析、二硫键分析、磷酸化位点分析、二级结构以及三级结构的预测、亚细胞定位和蛋白质功能分类预测等分析。

Typical precipitatingagents that have been used include sodium or calcium hydroxide , iron sulfide , sodium dimethyldithiocarbamate, sodium hydrosulfite , and starch xanthate.

典型的沉淀已使用的药物包括钠或氢氧化钙，铁硫醚，二甲基二钠，亚硫酸钠，淀粉黄原酸酯。

Preferably, at least one member selected from among heterocyclic compounds having any of hydroxyl, carbonyl, carboxyl, amino, amido and sulfinyl and containing at least either a nitrogen or a sulfur atom is contained in the polishing solution.

优选其中包含杂环化合物，所述杂环化合物含有羟基、羰基、羧基、氨基、酰胺基和亚磺酰基中的任1种，且含有氮和硫原子中的至少1种。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。