查询词典 anoxic

But the effluent ammonium in the anoxic reactor, where enough NO2 were present, was equal to the blank system, and no ammonium was converted to such nitrogen compounds as NO2- and N2 by Nitrosomonas eutropha using NO2 as electron acceptor, which maybe caused by lack of the function bacteria. There were two ANAMMOX reaction pathways in the one-stage autotrophic nitrogen removal system. One way was that after part of NH4+ was oxidized to NH2OH under aerobic conditions, NH2OH and NO2- were converted to N2O under anaerobic conditions, at last N2O was further converted to N2 which realized the nitrogen removal; Another way was that at first NO2- was reduced to NH2OH, NH2OH reacted with NH4+ to form N2H4, which was further converted to N2 subsequently, realizing the nitrogen removal.

结果表明：单级自养脱氮系统内6.72%的氨氮是通过吹脱等物化作用去除的，不超过6.02%的氨氮是通过传统硝化反硝化途径去除的，87.26%左右的氨氮是由自养脱氮途径去除的，自养脱氮反应起主要脱氮作用；在足够NO2存在且缺氧的条件下，单级自养脱氮系统内的出水氨氮浓度与空白反应器相当，NH4+并没有被亚硝化单胞菌以NO2为电子受体氧化为NO2-和N2等化合物而得以去除，可能是因为系统内不存在该代谢功能的亚硝化功能菌；单级自养脱氮系统内存在两条ANAMMOX反应途径：其中一条途径即NH4+在好氧条件下被氧化为NH2OH后，生成的NH2OH与系统内的NO2-在缺氧条件下被转化为N2O，N2O则进一步被转化为N2而实现氮的去除；另外一条途径即NO2-首先被还原为NH2OH，生成的NH2OH则与系统内的NH4+反应生成N2H4，N2H4继续被转化为N2而实现氮的去除。

Fe and Mn accumulate in surface when lake water is oxygenous, but diffuse to lake when water is anoxic.

湖泊中铁、锰围绕着沉积物-水界面形成循环。

Each unitis of different biotic characters and displays different features of seawater composition during the time. 2 The black unit including a biotic extinction was caused by oceanic anoxic event. Crisis that deepwater keeled foraminifera encountered represents a ferocious anoxia in deep marine environment . Biotic recovery in gray unit reflects gradually improved marine circumstance. What the biotic extinction at the C/T boundary in black unit reflects an environmental mutation, whereas the gradual biotic change characterize the recovery of marine dissolved oxygen environment in a stepwise process. The red unit is the result of oxic deposition and characterized by extremely abundance of foraminiferal faunas, which reflects a high-oxidized marine circumstance. 3 As the most ordinary biotic index in paleoceanography researches, foraminifera represent anexcellent environmental indicator in this paper.

三套岩层表现出不同的生物特征，并指示出当时海水的不同性质。2黑层段是大洋缺氧造成的结果，生物大量灭绝，深层水具旋脊有孔虫的所遭受的危机反映出当时海洋深层水体严重缺氧的特征；灰层段中生物的恢复反映出海洋环境自缺氧事件之后的逐步改善过程，与黑层段反映的C/T 界线处生物绝灭反映的环境突变不同，灰层段生物特征的渐变指示出当时海洋溶解氧环境的恢复也是一个逐步的过程；红层段属于富氧沉积的产物，特征是有孔虫生物的极度繁盛，反映的是一种高氧化性的海洋环境。3有孔虫作为古海洋研究中最常用的生物指标，在本文研究中显示了良好的环境指示性。

And oil of Jurassic in Longkou-1 Well is originated from hypersaline and anoxic reducing Cambrian-Lower Ordovician sapropelic source rocks.

华英参1井侏罗系和塔东2井寒武系原油与龙口1井的原油为同一油源，均处于成熟阶段。

Organic carbon-limited diagenetic pyrite added to the earlier formed syngenetic pyrite, which was controlled by the time that iron minerals remained in contact with H2S in anoxic waters.

其中以成岩黄铁矿为主，其形成过程主要受有机质限制，而同生黄铁矿受铁矿物与H2S接触时间的限制。

Machinery aerates as a kind breath supports a technology , can improve lobar function , improve anoxic position , for all sorts of cure buy time and creation condition .

机械通气作为一种呼吸支持技术，能改善肺功能，改善缺氧状态，为各种治疗争取时间和创造条件。

As a non-pollution and anoxic defatting method, supercritical CO2 fluid has a wide prospect in bone defatting.

超临界CO2作为一种无污染、无毒的高效脱脂方法，在异种骨的脱脂处理中具有广阔的应用前景。

The loading rates of NH〓-N removal for aerobic reactor and NO〓-N denitrified for the first anoxic reactor are 1. 01 and 0.94kg/m〓.

好氧反应器的NH〓-N去除负荷为1.01kg/m〓。d，第一级缺氧反应器NO〓-N反硝化负荷为0.94kg/m〓。d。

By controlling the nitrate concentration in the anoxic stage,the methods and effects of inducing Denitrifying Phosphate Accumulating Organisms were studied.

通过控制缺氧段硝酸盐浓度，研究了反硝化聚磷菌的诱导方法及效果。

The A2N process was set up in two-sludge system, in which nitrifies were separated from denitrifying phosphorus removal bacteria in a nitrification biofilm reactor, whereas DPB sludge was recalculated between an anaerobic reactor and an anoxic reactor.

A2N系统的DPB污泥絮体凝聚较好且颗粒较大，污泥的SVI通常处于52－92mL/g之间。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。