亚硝化

Experimental results showed that, in this process, the optimal pH of the shortcut nitrification was 8.0～8.5; when the pH was less than 6,the nitrification is completely inhibited; when the pH was 6～7, at the end of aeration, the Nitrobacteria become the dominant bacteria because of the dropping of the free ammonia concentration. It is known to all, the activity of the Nitrobacteria and Nitrosomonas was affected by FA concentration, so nitrification was affected by FA concentration. According to the author's research results, the FA concentration which inhibit the Nitrobacteria was below 1.0mg/L,which inhibit the Nitrosomonas was above 10mg/L.

实验研究结果表明：本工艺中，短程硝化反应的最佳pH值在8.0～8.5之间，当pH小于6时，整个硝化反应都会受到抑制，当pH在6～7之间时，随着游离氨浓度的降低，在曝气后期，硝化菌将会占据优势；FA浓度对短程硝化反应的影响是通过对亚硝酸菌和硝酸菌的抑制来实现的，在本研究条件下，游离氨对亚硝酸菌的抑制浓度在10mg/L以上，对硝酸菌的抑制浓度在1.0mg/L以下；温度对短程硝化反应的影响是双重的，既影响微生物的生理活性，又影响FA浓度。

The isolated aerobic ammonia oxidizers could use nitrite as electron acceptor to carriy out anaerobic ammonia oxidation as well as using oxygen as electron acceptor to oxidise ammonia.

所分离的好氧氨氧化菌能以氧作为电子受体进行亚硝化作用，也能以亚硝酸盐作为电子受体进行ANAMMOX作用。

Picking out single colony from ammonifying culture medium solid medium and seeding them in nitrosation culture medium to culture and purify to obtain heterotrophic nitrifying bacteria.

从氨化培养基固体培养基中挑取单菌落，接种于亚硝化培养基中培养、纯化，获得异养硝化细菌。

The renewal rate of sludge and suitable SRT is the key of stable nitrous nitrifying system.

要建立稳定亚硝化系统必须保证污泥的更新率，寻求合适的污泥龄。

Bromo-5-formyl -3-methylpyrrole is an important intermediate of tolyporohin. On the base of introducing the present research and development of tolypo- rohin and pyrroles ramification at home and abroad, an emphasis was made on synthesis of 2-Bromo-5-formyl -3-methylpyrrole and the technical conditions of all steps, which was described as follows. Diethyl 3,5-dimethylpyrrole-2,4-dicarboxylate was made by nitrification, reduction and cycle of ethyl acetoacetate.

由于2-溴-5-甲酰基-3-甲基吡咯是合成托尼卟吩的重要中间体，本文在阐述了当前托尼卟吩及吡咯衍生物的国内外研究和开发的基础上，重点研究了2-溴-5-甲酰基-3-甲基吡咯的合成，并对各步反应进行了工艺研究，具体合成步骤如下：本文通过对乙酰乙酸乙酯的亚硝化、还原、成环，反应生成吡咯单环衍生物2，4-二乙氧羰基-3，5-二甲基吡咯。

Meanwhile, the activation of caspase-3 could be found increased in ClearCa-6 with lower expression of XIAP, but not in ClearCa-2 with higher expression of XIAP when exposed to various apoptotic inductions.

4意外发现Nitrite存在下UVA的照射可引起Caspase-3活性的抑制，并证明此抑制作用的直接机制是UVA使Nitrite在光解作用中释放NO，使Caspase-3受到亚硝化修饰而丧失活性。

Bromo-5-formyl -3-methylpyrrole is an important intermediate of tolyporohin. On the base of introducing the present research and development of tolypo- rohin and pyrroles ramification at home and abroad, an emphasis was made on synthesis of 2-Bromo-5-formyl -3-methylpyrrole and the technical conditions of all steps, which was described as follows.

由于2-溴-5-甲基-3-甲基咯是合成托尼吩的重要中间体，本文在阐述了当前托尼吩及咯衍生物的国内外研究和开发的基础上，重点研究了2-溴-5-甲基-3-甲基咯的合成，并对各步反应进行了工艺研究，具体合成步骤如下：本文通过对乙乙酸乙酯的亚硝化、还原、成环，反应生成咯单环衍生物2，4-二乙氧羰基-3，5-二甲基咯。

The experimental results indicate that the nitrite oxidizers are more sensi-tive to free ammonia than ammonia oxidizers in the wastewater.

结果表明，在高游离氨条件下，硝酸菌比亚硝化菌对游离氨更为敏感，反应体系中亚硝酸盐的平均积累速率远大于硝酸盐的平均积累速率。

The isolated anaerobic ammonia oxidisers could carry out both anaerobic ammonia oxidation and nitrification.

反之，所分离的ANAMMOX菌除了能进行ANAMMOX外，也能进行亚硝化作用。

The ten target compounds from alkyl substituent to aryl substituent that have not yet been reported,which was obtained by dehydration, Subsequently treated with sodium nitrite resulting nitroso compounds and then reduced.

本论文以2-羟基-3-萘酸和邻巯基苯胺为原料，通过分子脱水、亚硝化、还原等反应合成了10个不同取代基团的4-苯并噻唑基-[1，2-d]萘并噁唑衍生物，并优化了合成的工艺条件。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。