查询词典 phosphorus

Firstly, the molybdenum based catalysts modified by silver, phosphorus, vanadium using aluminum oxide as carrier were studied. The results showed that its catalytic performance for 1,2-propane glycol oxidation to methylglyoxal is good.

论文首先对以氧化铝为载体，在银、磷、钒修饰下的钼系催化剂进行了研究，通过实验发现该催化剂对丙二醇氧化制备丙酮醛具有高的催化活性和较好的选择性。

Secondly, the silver based catalysts modified by phosphorus, zirconium, zinc, potassium and so on using molecular sieve as carrier, which were produced by ion-exchange method, had also good catalytic performance for 1,2-propane glycol oxidation to methylglyoxal. The conversion of 1,2-propane glycol and the selectivity of methylglyoxal were both high, and the impurity such as formaldehyde and acetaldehyde in the product is little. At the condition of the temperature 300 ℃, the molar ratio of oxygen to 1,2-propane glycol 1.7:1, the space velocity 6000h~(-1), and the concentration of 1,2-propane glycol 70wt%, the conversion of 1,2-propane glycol is 90% and the selectivity of methylglyoxal is 45% on the Ag-P catalyst.

其次对采用离子交换法制备的负载在分子筛上的银系催化剂进行了研究，发现此催化剂在助催化剂磷、锆、锌、钾等的作用下对丙二醇的低温氧化脱氢具有很高的活性，可以得到较好的丙酮醛的收率，并且产物中的甲醛、乙醛副产物的量比较低；经过对Ag-P催化剂上反应条件的考察，发现当温度为300℃、氧醇比1.7：1、空速6000h~(-1)、丙二醇浓度为70wt%时，丙二醇的转化率为90%，丙酮醛的选择性为45%。

This invention provides a method for preparing hydrogenation catalyst containing phosphorus supported by aluminum oxide. The catalyst is composed of nickel oxide 1-10 wt.%, molybdena oxide and tungsten oxide 10-50 wt.

以氧化铝为载体的含磷加氢催化剂及其制备，该催化剂焙烧后的组成为氧化镍1-10重量％，氧化钼和氧化钨之和大于10至50重量％，氧化磷1-9重量％，余量为氧化铝，其中，以氧化物计，钨和钼的摩尔比大于2.6至30。

The results showed that CRMP had higher phosphorus availability in soil and the changes ofavailable P concentration in both root zone and non-root zone soil were more reasonable during the sorghum growing season as compared to common monoammonium phosphate.

与普通磷酸一铵相比，控释磷酸一铵施入土壤后磷的有效性较高，无论是近根区还是非根区土壤有效磷随时间的变化分配更趋于合理。

At present, the company mainly produces: potassium dihydrogen phosphate, monoammonium phosphate, diammonium phosphate, phosphoric acid (85% industrial grade), potassium nitrate,Sodium Tripolyphosphate(Industrial-grade, Food-grade),NPK and other phosphorus products.

目前，公司主要生产：磷酸二氢钾、磷酸一铵、磷酸二铵、磷酸（85%工业级）、硝酸钾、三聚磷酸钠、各种规格的NPK复合肥等磷化工系列产品。

The invention relates to coated seeds of certain plant species, the seeds having a coating for improving the efficiency of phosphorus in the plant nutrients during the early growth of the plant, the coating comprising : i an aqueous fixing agent which contains a fluid byproduct of agriculture or fermentation and possibly an emulsified oil, and ii a fertilizer powder which, depending on the plant species, is monopotassium phosphate, monocalcium phosphate, dicalcium phosphate, or urea phosphate.

本发明涉及某些植物品种的包衣种子，所述种子具有能提高植物生长的早期阶段的植物营养物中的磷效率的包衣，所述包衣含：i含农业或发酵的流体副产品和可能含有的乳化油的含水固定剂，和ii肥料粉末，所述肥料粉末根据植物品种是磷酸二氢钾、磷酸一钙、磷酸二钙或磷酸尿素。

Phytase can add to the feed of monogastric animals and hunan food. The addition of phytase to feed and food can resolve the antinutrition of phytic acid, increase the bioavailablity of protein and minerals, decrease animals' fecal phosphorus excretion and reduce environment pollution.

植酸酶可添加于食品与饲料中，能消除因不能降解的植酸所引起的抗营养作用，提高机体对蛋白质及多种微量元素的利用率，降低粪便中磷的含量，从而减少环境中磷的积累污染，有利于保护生态环境。

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。

DETERMINATION OF PHOSPHORUS SOLUBLE IN A 20 G.L-1 MONOHYDRIC CITRIC ACID SOLUTION.

NF X31-160-1993 土壤质量。20G.L-1一元柠檬酸溶液中溶解磷的测定。

It was found that the efficiency after variable temperature phosphorus gettering was much better than that of isothermal one for cast multicrystalline silicon, especially in the high quality zone of as-grown materials, and the optimal parameter of variable temperature phosphoru.

用微波光电导衰减仪研究了不同温度和时间的恒温和变温磷吸杂处理对铸造多晶硅片电学性能的影响。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。