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In this study,under laboratory conditions,using traditional microbiological culture method,select the Pb2+ stress training of Pistia stratiote and Myriophyllum spicatum L. under water culture, through the changs of root- microbial of Pistia stratiote and Myriophyllum spicatum L.,the results show that bacteria,fungi,actinomycetes have different concentrations under Pb2+ stress. It is specificity of ammonification, nitrification,andanti-Nitrosation after Pb2+ stress.

中文摘要:本研究在实验室条件下,用传统的微生物培养法,选择重金属离子Pb2+在水培条件下对大薸和穗状狐尾藻进行胁迫培养,通过测定大薸和穗状狐尾藻根系的微生物区系及与氮循环有关的四种细菌的数量变化发现:细菌、真菌、放线菌对重金属Pb2+的不同浓度的敏感性不同;重金属Pb2+胁迫对氨化、硝化、亚硝化和反硝化四类细菌的影响也表现出各自的特殊性。

The paper studied the effects of submerged macrophyte and immobilized bacteria on the distribution of four bacteria communities: ammonifying bacteria; nitrosobacteria; nitrobacteria and denitrifying bacteria in water column and sediment of eutrophicted water.

本试验研究了沉水植物伊乐藻和固定化微生物两者相结合对富营养化水体和底泥中4种菌群的氮循环微生物(氨化细菌、亚硝化细菌、硝化细菌、反硝化细菌)分布的影响。

METHOD Dofetilide was synthesized by steps of reaction (substitution ,reduction, methylsulfonylation and methylammoniation, etc) from p-nitrophenol and p-amino phenethyl alcohol.

以对硝基苯酚为起始原料,经取代、还原、甲磺酰化等反应制得 4甲磺酰苯胺(5 );以对氨基苯乙醇为起始原料,经甲磺酰化、甲氨化等反应制得 4 甲磺酰苯胺(8),再与5经取代反应制得多非利特。

In Eucalyptus forestland, soil organic carbon, total nitrogen, available potassium contents and soil PH decreased significantly; soil available phosphorus and exchangeable magnesium contents, net nitrogen mineralization rate and ammonification rate also decreased but showed no significant difference. In shrubland, soil exchangeable calcium content increased significantly, but the contents of other nutrients had no significant change.

结果表明:火烧3年后,桉林土壤有机碳、全氮、速效钾和pH含量明显降低,土壤有效磷、交换性镁、土壤净氮矿化速率和氨化速率降低,但不显著;火烧灌草坡除土壤交换性钙明显增加外,其他土壤养分均无显著变化。

The effect of impurity H2SO4 in the simulating wet-process phosphoric acid on the rheological behavior of the ammoniated slurry was studied.

用化学试剂配制不含铁的模拟湿法磷酸,在其铝,镁,氟杂质浓度固定的条件下,改变硫酸杂质的浓度,在50 ℃下测定其氨化料浆的流变曲线。

Therefore the one went out and brought a new shirt at sevenand six and dear at that,and the other got himself a shillingbottle of Ammoniated Quinine,which was tolerably cheap.

于是,一人出去用7先令6便士买了件衬衫,感觉很贵;另一人则花1先令买了瓶氨化奎宁,相当便宜。小析:见下。

The quality of alfalfa, white clover and red clover were better among fresh forages and silage feeds and that of dry radish leaves and ammoniated rice straw were better among desiccated forages.

在新鲜牧草和青贮饲料中紫花苜蓿、白三叶、红三叶品质较好,在干贮牧草中干萝卜叶和氨化稻草品质较好。

Including high temperature for the pyrolysis of natural gas to produce carbon black and acetylene; steam reforming of natural gas or partial oxidation of natural gas, synthetic gas can be obtained; natural gas through chlorination, sulfide, nitrification, ammoniated oxide, oxidation can be obtained A N all kinds of derivatives; in the wet gas ethane, propane, butane and natural gas liquid condensate, and so on, the steam cracker or pyrolysis to produce ethylene, propylene and butadiene; dehydrogenation of butane oxidation or produce small Diene or acetic acid, methyl ethyl ketone, and maleic anhydride, and so on.

包括在高温下进行的天然气热裂解,主要生产乙炔和炭黑;天然气蒸汽转化或天然气的部分氧化,可制得合成气;天然气经过氯化、硫化、硝化、氨化氧化、氧化可制得甲烷的各种衍生物;湿性天然气中的乙烷、丙烷、丁烷和天然气凝析液等,经蒸汽裂解或热裂解可生产乙烯、丙烯和丁二烯;丁烷脱氢或氧化可生产丁二烯或醋酸、甲基乙基酮、顺丁烯二酸酐等。

In this paper, GaN one-dimensional nanosmaterials were synthesized through magnetron sputtering and ammoniating progress on Si(111) substrates.

本文介绍了利用溅射加氨化的两步生长法在Si衬底上采用金属Nb作催化剂合成一维GaN纳米材料的方法。

Firstly, Ga2O3/Ta film is deposited on Si (111) substrates by magnetron sputtering system, and then GaN nanostructures were fabricated through ammoniating.

本文介绍了采用氨化磁控溅射Ga_2O_3/Ta薄膜的方法在硅衬底上合成了GaN纳米结构的方法。

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