磷化

It was verified that the particle size of more than 90% of the acidic phosphorite powder was less than 4.227 μm, and more than 90% of activated phosphorite powder was less than 220 nm.

采用扫描电镜观察、X－射线衍射分析、激光粒度测试，证明了90%的酸化磷矿粉粒径为4.227 μm，90%的活化磷矿粉粒径达到220 nm。

In this paper, the stereoeffect on the protein's phosphoryl transfer reaction mechanism was investigated by a model systemphosphoamino acids.

本文建立了以磷酰化氨基酸为模型化合物，定量研究磷酰基转移反应的方法，得到了以下成果

This paper also discovered that the phosphoryl transfer reactions of Nphosphoamino acids were catalyzed by imidazole with factors of 10-38, and the catalytic reaction rates could be influenced by the concentration of imidazole, structure of amino acids and alcohol.

磷酰化氨基酸的分子内N→O磷酰基转移反应具有很强的立体效应，丝氨酸与高丝氨酸，苏氨酸与来苏氨酸的反应活性分别相差6倍和1倍左右。

The impact of sesquioxide (Fe2O3, Al2O3), MgO contents in phosphate rock on available phosphorus content in final SSP product is analyzed, the method is introduced and exemplified for predicting the available phosphorus content of SSP based on the decreasing free acid and moisture in curing period.

分析磷矿石中倍半氧化物，MgO含量对成品有效磷含量的影响；介绍熟化过程中游离酸和水分降低对成品有效磷含量影响的预测方法并举例说明。

The Hammett indicator, TPD and IR methods are used to study the relation bet- ween the surface acidic properties of a P-La modified ZSM-5 zeolite catalyst and its toluol disproportion catalytic properties.

本文用Hammett指示剂法，程序升温脱附法和红外光谱法考察了磷和磷一改性ZSM－5沸石催化剂表面酸性变化对甲苯歧化催化剂性能影响，认为磷酸与沸石的直接作用，使沸石的强酸中心消失。

Tissue composition analysis, nutrient enrichment and starvation treatments, bioassay and in situ extracellular alkaline phosphatase activity determination showed that growth of Sargassum duplicatum, Codium edule and Ulva latuca were limited by phosphorus during the early growth period while nitrogen during the fast growth period. Growth of Enteromorpha linza, Gracilaria coronopifolia and Laurencia papillosa were limited by phosphorus.

南湾及眺石海水优养化可能是造成大型海藻单位面积生物量明显增加的原因，藻体营养分析、室内营养盐添加与不添加处理、bioassay及insitu 细胞外磷酸分解酵素活性证明重缘叶马尾藻、食用松藻及大石莼的营养盐限制因子在初期是磷而快速生长期是氮而浒苔、伞房龙须菜及乳头凹顶藻是磷。

Dialkyl phosphochloridates were used to synthesize N-phosphoamino acids in mixed aqueous media in one-step, which was applicable to a broad of amino acids, such as basic, acidic or neutral amino acids.

三、发现了用磷酰氯的方法可以在水体系中一步合成磷酰化氨基酸，适用于酸、碱和中性各类氨基酸。

These results provided the evidence that the formation of imino acetoxyphosphoranes intermediates was crucial to bioorganic reactions of N-phosphoamino acids.

这些结果从机理上证明N-磷酰氨基酸在水／醇体系中所发生的仿生化反应的确经历了氨基酸磷烷中间体。

In the synthesis process, aluminum isopropoxide or pseudo-boehmite is used as aluminum resources, and hexacosanoic propylamine and isopropylamine or the mixture of both are used as templates, thereby realizing the purposes of single feeding adoption, relatively mild crystallization condition, suitable water-solid ratio and great template dosage reduction.

一种用杂原子取代AEL骨架结构磷铝酸盐分子筛的合成方法，该方法是以氯、钛、钴、钙、钯、锌、铈和锆等杂原子为杂原子物料来取代磷铝酸盐分子筛的AEL骨架结构，并在合成过程中以异丙醇铝或拟薄水铝石为铝源，正二丙胺、异二丙胺或两者的混合物为模板剂，从而实现采用一次投料，晶化条件相对温和，水固比适宜，模板剂用量大大下降的目的。

The synthesis of dimethyl fumarate was studied from maleic anhydride and methanol with phospho molybdic acid as the catalyst and bromate as the isomerization catalyst by one-step in this short paper.

采用固体杂多酸磷钼酸为催化剂，溴酸盐为异构化剂，经顺酐一步合成了富马酸二甲酯，探讨了醇酐比、反应时间、催化剂的量、异构化剂的量以及异构化时间对合成DMF收率的影响，并确立了最佳反应条件。

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。