硝酸

Results showed that the most suitable strains decoloring conditions for the degradation of sodium nitrate 12g/L, 0.8 g/L, ammonia 16g/L, salinity than in the foregoing conditions, to cultivate the concentration of 100mg/L don't sterilization of malachite green, bleaching solution still cultivate 5d rate is 90%.

结果表明，菌株脱色最适合降解条件为醋酸钠12g/L，硝酸氨0.8g/L，盐度小于16g/L，在上述各培养条件下，对浓度为100mg/L不灭菌的孔雀石绿溶液静止培养5d，脱色率达90%以上。

Low levels of the crust, melting point 3180 ℃, boiling point 5627 ℃, the relative density of 2053, the external F electronic structure 5d56s2, reaction time will be lost 1-7 electronic, but also can capture an electron, so oxidation number of 0,± 1, 2 , 3, 4, 5, 6 and 7, rhenium with the halogen in the fluorine, chlorine, bromine reaction halides dissolved in water, can dissolve in nitric acid and ammonia hydrogen peroxide solution, but do not dissolve in hydrochloric acid.

地壳中含量很低，熔点3180℃，沸点5627℃，相对密度2053，外围F 电子结构5d56s2，反应时会丢失1—7个电子，也可捕获一个电子，所以氧化数为0、±1、＋2、＋3、＋4、＋5、＋6和＋7，铼能与卤素中的氟、氯、溴反应生成溶于水的卤化物，能溶于硝酸和含氨过氧化氢等溶液，但不溶于盐酸。

Catalyst particles coated uniformly on cordierite surface through dipping-method in nickel nitrate solution, were used to synthesize carbon nanotubes via methane diffusion flame method.

借助于硝酸镍溶液，利用浸渍法在堇青石表面均匀负载镍催化剂颗粒，在甲烷扩散火焰中活化并催化生成碳纳米

By using catalysts based on sodium nitrite, hydrochloric acid and sodium nitrite, cerium dioxide and sodium nitrite, and cupric nitrate and sodium nitrite correspondingly.

结果表明，用亚硝酸钠作催化剂乙醛酸产率为73.9%，盐酸和亚硝酸钠作催化剂时乙醛酸产率为84.6%，二氧化铈和亚硝酸钠作催化剂时乙醛酸产率为80.2%，硝酸铜和亚硝酸钠作催化剂时乙醛酸产率为78.2%。

Cerium dioxide ultrafine powders were prepared by electrochemical method using composite coating of Ru, Ir and Rh as anode, and Cerium nitrate and ammonium nitrate as electrolyte.

采用钛基钌铱铑复合涂层作为阳极，以硝酸铈和硝酸铵作为电解液，电化学法制备二氧化铈超细粉体。

Huang bean sprouts in the decomposition of chlorophyll inside the human body can nitrite amines, which played rectal cancer prevention, such as the role of a variety of gastrointestinal cancer.

黄豆芽中的叶绿素能分解人体内的亚硝酸胺，进而起到预防直肠癌等多种消化道恶性肿瘤的作用。

And then, synthesizing of middle chrome, light chrome and lemon chrome through the reaction of leachate with Pb(CH3COO)2 and Pb(NO3)2 were studied respectively.

将铬渣淋滤液与乙酸铅和硝酸铅进行反应，分别进行了中铬黄、浅铬黄和柠檬铬黄的生成试验，研究了滤液中六价铬浓度和铅盐的用量对铬黄生成反应的影响。

Medium added inhibitor, could slow down the corrosion of equipment and valves, such as chrome-nickel stainless steel in sulfuric acid containing no oxygen, the great state of cremation within the range of solubility, corrosion more serious, but a small amount of copper sulfate or nitric acid and other oxidants, can change the passive stainless steel surface generates a layer of protective film to prevent the medium of etching, in hydrochloric acid, if a small amount of oxidant, which reduces the corrosion of titanium.

介质中添加缓蚀剂，可使设备和阀门的腐蚀减缓，如铬镍不锈钢在不含氧的硫酸中，很大的溶度范围内成火化态，腐蚀较严重，但加入少量硫酸铜或硝酸等氧化剂，可使不锈钢转变钝态，表面生成一层保护膜，阻止介质的的浸蚀，在盐酸中，如果加入少量氧化剂，可降低对钛的腐蚀。

A new technology for making chromium trioxide and potassium nitrate simultaneously by using nitric acid to decompose potassium dichromate has been analyzed according to phase diagrams of the K2Cr2O7-CrO3-KNO3-HNO3-H2O quaternary system at 0oC, 25oC and 45oC based on experimental results.

以实验测得的K2Cr2O7-CrO3-KNO3-HNO3-H2O四元体系相图为依据，对用硝酸酸化重铬酸钾联产铬酸酐和硝酸钾工艺过程进行分析，确定了铬和钾利用率最大时的操作条件。

After treatment, the nitrate reductase activity decreased generally. It began to increase before the flower-bud appearing , and gradually came to peak at flower cluster growing stage, but decreased then and gradually came to a low tide at early blossoming stage.

处理后，硝酸还原酶活性呈现下降走势，在红点出现前一段时间，开始上升，在花穗伸长期达到高峰，随后开始下降，初花期降到低谷。

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。