查询词典 nitrogen-fixing bacteria

Strains YL001 and YL002 formed a monophyletic clade with strains of X. nematophilus with sequence homology outweighing 99% and the sequence homology to genus Photorhabdus outweighing 94%. The lag, logarithmic, stationary and contabescence phase of the two bacteria were 0-6, 6-18, 18-66 and 66 h respectively; pH of strains YL001 and YL002 reduced to 5.70 and 5.56 at 12 h, respectively, and then rose gradually to 7.74 and 8.07 respectively when culture finished. Glucose content reduced quickly during 0-18 h, and then kept stable. Amido nitrogen content reached the lowest at 12 h and then rose slowly. YL001 exhibited the highest inhibitory effects at 54 h and YL002 exhibited highest inhibitory effects at 42 and 66 h respectively on B. cirerea and B. subtilis. Strains YL001 and YL002 belonged to X.

YL001和YL002菌株与嗜线虫致病杆菌种内菌株形成一个类群，序列同源性大于99%，与发光杆菌属内菌株的序列同源性大于94%。2菌株的延缓期、对数生长期、稳定期和衰亡期分别为0~6，6~18，18~66和66 h；培养12 h后，YL001和YL002菌株发酵液的pH值分别降低至5.70和5.56，此后逐渐上升，至发酵结束时其pH值分别为7.74和8.07；培养0~18 h时2菌株发酵液中还原糖含量迅速降低，此后保持稳定；12 h时氨基氮含量达到最低，此后开始缓慢上升；YL001菌株培养54 h后及YL002菌株培养42和66 h后，其对番茄灰霉病菌和枯草芽孢杆菌的抑制作用最强。

Cyanophycin is a protein produced by cyanobacteria (blue-green algae) and some other bacteria. They use it to store nitrogen, among other things.

藻青素是蓝细菌和其它细菌中产生的一种蛋白质，这些细菌利用藻青素来贮藏氮源。

The key part of this project is the application of high effective degradative microorganisms for aromatic hydrocarbons and nitrify bacteria for biological nitrogen removal in the treatment of recalcitrant industrial wastewater .

本项目的关键技术是将人工筛选的芳香族化合物降解菌和生物脱氮的硝化细菌应用于难降解的工业废水处理工程。

The key part of this project is the application of high effective degradative microorganisms for aromatic hydrocarbons and nitrify bacteria for biological nitrogen removal in the treatment of recalcitrant industrial wastewater.

本项目的关键技术是将人工筛选的芳香族化合物降解菌和生物脱氮的硝化细菌应用于难降解的工业废水处理工程。技术特点是：可在去除难降解有机物的同时脱除高浓度的氨氮。

But the effluent ammonium in the anoxic reactor, where enough NO2 present were present, was equal to the blank system, and no ammonium was converted to such nitrogen compounds as NO-2 and N2 by Nitrosomonas eutropha using NO2 as electron acceptor, which maybe caused by lack of the function bacteria.

但在足够NO2存在并且缺氧的条件下，单级自养脱氮系统内的出水氨氮浓度与空白反应器相当，NH+4并没有被亚硝化单胞菌以NO2为电子受体氧化为NO-2和N2等化合物而得以去除，可能是因为系统内不存在该类型的亚硝化功能菌。

The results indicate that the high efficiency and stable performance of shortcut nitrogen removal in MBR-PBBR process is attributed to the predominance of functional microbiology Nitrosomonas eutropha during the period of operation,which occupies over 54%of total bacteria.However,large amount of organic carbon can destroy the predominance of N.eutropha,whose proportion decreased to 31%at TOC/N=0.3.The diversity of microbial community in MBR increases along with operating time.

结果发现，生物强化的MBR-PBBR工艺能实现相对稳定和高效的捷径生物脱氮，主要归功于MBR中的功能微生物Nitrosomonas eutropha在运行过程中始终保持优势地位，占全菌数的比例大于54%；然而，当外加有机碳源较高(TOC/N≥0.2)时，可动摇氨氧化菌的优势地位，N.europha占全菌数的比例在TOC/N=0.3时下降至31%。

One Nitroso-bacteria named N1(GenBank registered number: EU647556) was isolated from the SBBR one-step completely nitrogen removal process, and was identified as Nitrosomonas sp. The characteristics of N1 were studied. Results showed that the optimal temperature and pH of N1 were 8.0 and 30℃respectively and sufficient dissolved oxygen was demanded.

N1(NCBI数据库中注册号为EU647556)，该菌株对氧气需求量存在较严格要求，pH及温度对其氨氧化活性具有明显的影响，最适条件分别为pH8.0和30℃，在氨氮浓度80～800mg/L较宽的底物浓度范围内具有活性，当氨氮浓度高达800mg/L时，其氨氧化活性没有受到明显的抑制。

An ammonium nitrogen in paddy field showed the same tendency of reduction as ammonifying bacteria.

随着丁草胺+尿素使用剂量的提高，土壤氨化细菌含量显著下降，土壤铵态氮含量也呈现相同的下降趋势。

All additions rapidly decreased silage pH under different DM contents of M.sativa.M.sativa(DM 38.45%) ensiled with lactic acid bacteria+cellulase gave the best results: ammonia nitrogen content was reduced,and most CP was conserved and most lactic acid produced.

结果表明，不同干物质含量的苜蓿青贮时，乳酸菌+纤维素酶的添加均能使青贮pH值快速下降；苜蓿半干青贮(干物质含量为38.45%)可使青贮氨态氮含量显著降低，并保存有较多的粗蛋白质，生成较多乳酸，其中以添加乳酸菌106 cfu/g+纤维素酶0.05 g/kg的青贮效果最好，其青贮综合评定得分最高，达93分。

Nitrifying bacteria require oxygen to derive energy from reduced nitrogen.

600072的回答：硝化细菌需要氧气的供给来从低能氮中获取能量。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失