硝酸

FISH (Fluorescent In Situ Hybridization) was a rapid and simple method to detect the distribution and relative quantities of nitrifying bacteria in the floe of activated sludge.

荧光原位杂交对受锌离子污染的活性污泥微生物的检测表明，实验组硝酸细菌的分布和丰度与对照组的巨大差距是导致氨氮和亚硝酸根转化率低下的直接原因。

Chart3: variation of water nutrition value in aquaculture pools,infall and outfall

图3为无机盐（硝酸氮，亚硝酸氮，氨氮，非离子氨）和磷酸盐含量变化图。

Salt solution approximate 10^(-1M treatments were more effective in the inhibition of elongation. Fiber formation and lignification were also inhibited to various degrees by salt solutions.

以10^(-1)M左右的硝酸镁、硝酸钙、硝酸钠溶液处理，嫩茎的抽长被抑制得更多；纎维化和木质化也受到明显的抑制。

A preparation method of nickel oxide-base cathode of fused carbonate fuel cell is to select alkali earth metal oxide, transition metal oxide and rare-earth metal oxide, mix with carbonyl nickel powder in the proportion of 0.01-15.00 mol%, add assistant and mix even into a slurry; after the slurry is formed into a biscuit by doctor-blade casting, sinter it into a multi-porous nickel plate; dissolve lithium nitrate and cobaltous nitrate with mole ratio of Li:Co-1:1 and citric acid or PVA in the distilled water to make a solution with Li of 0.00-0.5 mol/L; immerse the multi-porous nickel plate or nickel oxide plate in the solution, keep for 10-60 minutes under vacuum below 200 millibar, then dry in an oven at 75 degrees centigrade further transfer to a crucible electric furnace preheated 650 degrees centigrade for keeping the temp.

要約 熔融碳酸盐燃料电池氧化镍基阴极的制备方法属于燃料电池领域。选取碱土金属氧化物、过渡金属氧化物和稀土金属氧化物，按0.01－15.00mol％的比例与羰基镍粉混合，加入助剂，混合均匀成浆料；混合浆料流延成型为素坯后烧结为多孔金属镍板；将摩尔比为Li∶Co＝1∶1的硝酸锂和硝酸钴以及柠檬酸或聚乙烯醇溶于蒸馏水中，制成为0.005－0.5mol/L的溶液；将多孔金属镍板或氧化镍板浸入溶液中，在真空度低于200毫巴下保持10－60分钟；置于75℃的烘箱中烘干，转移至预热到650℃坩埚电炉中保温1－10小时；将此过程重复一次或多次即可。

The result of the experiment showed that the qualitative medium - speed filter paper can be used as the material of the nitrite - detecting paper: color developing reagent A containing 4 - aminobenzene sulfonamide and N - 1 naphthyl ethylenediamine hydrochloride, and mixtures of 1 : 1 naphthylamine solution and sulfanilic acid solution as color developing reagent.

实验结果表明：定性中速滤纸可以作为亚硝酸根试纸的材料；含有4-氨基苯磺酰胺和N-1-萘基乙二胺盐酸盐的显色剂A及含有1：1的α-萘胺溶液和对氨基苯磺酸溶液的显色剂B，按1：1混合后可以作为显色剂；通过应用实验表明，亚硝酸根试纸具有体积小、便于携带、检测方便、成本低廉等特点。

The effects of equilibrium time,acidity of the solution,temperature,concentration of redox reagents on the adsorption of neptunium by silica gel were carried out.

进行了吸附平衡时间、酸度、温度、氧化还原剂浓度等条件对硝酸溶液中Np、Np和Np在硅胶上吸附的影响的实验，与吸附时同酸度条件下的洗脱实验，用浓度为3mol／L的硝酸作为解吸剂的解吸实验。

This method was applied to the analysis of nitrite and nitrate in environmental water with satisfactory result.

应用于环境水样中硝酸根和亚硝酸根的同时测定，结果满意。

Hydrogen nitrate powder acidizing is to mix solid hydrogen nitrate powder and hydrochloric acid in certain proportions to generate strong oxidizing nitrosyl chloride, which can violently and locally dissolve rock and blocked material without destroying formation structure, to make through oil path and improve formation permeability.

硝酸粉末酸化工艺技术，是利用固体硝酸粉末与盐酸以一定的比例混合后，生成氧化能力很强的氯化亚硝酰。

Results showed that the former afforded an yield over 80% and the regioselectivity up to 5.4, both were higher than that using nitrous acid as nitrating agent.

结果表明：以硝酸铜作硝化剂时的硝化收率可达80%，P/O比值最高为5.4，均比用相同浓度的硝酸作硝化剂时要高。

The oxidation of mono-methylhydrazinewith nitrous acid in nitric acid medium was researched.

采用分光光度法研究硝酸介质中单甲基肼与亚硝酸(HNO_2)的反应。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。