nitrogen

Risk assessment on soil environment quality and losses of nitrogen and phosphorus for the gravel soils under different farming practices in the watershed of Lake Fuxian;

抚仙湖流域不同农业模式砾质土壤环境质量及其氮磷流失风险评估

Study on the Effect of 2 Kinds of Emergent Plants in Removing Nitrogen and Phosphorus and Its Influencing Factors;

两种挺水植物的脱氮除磷效果及其影响因素研究

Inert gas fusion thermal conductivity method for the determination of nitrogen in silicon metal;

惰气熔融-热导法测定金属硅中氮

Existing forms of phosphorus and nitrogen in sediments of Wabuhu Lake;

瓦埠湖沉积物中氮与磷赋存形态分析

Effects of Phytase and Compound Enzymes on Performance and Utilization of Nitrogen and Phosphorus for Meat Chickens;

植酸酶和复合酶对肉鸡生产性能及氮、磷利用的影响

The nitrogen and phosphorus in sediment interstitial water of cage cultural waters in the Depth Bay of Niutou Island;

牛头岛深湾网箱养殖区底质溶液中的氮和磷

An indirect proof of the main source of nitrate and phosphate pollutant in Songhuaba reservoir;

昆明市松华坝水库氮、磷主要来源的间接证据

Main Source of Nitrate and Phosphate Pollutant in Muyang River of Songhuaba Reservoir

松华坝水库上游牧羊河氮、磷主要来源研究

The influence of nitrate concentration on toxin content of Alexandrium tamarense was investigated, which gave rise to the supply of an appropriate nutrition condition and culture technique of increasing the toxin production of Alexandrium tamarense.

初步研究了培养基中氮浓度及补加氮对塔玛亚历山大藻毒素产量的影响。

Studies on growth and photosynthesis characteristics of Gracilaria lemaneiformis and its capacity to uptake ammonium and phosphorus from scallop excretion;

龙须菜(Gracilaria lemaneiformis)的生长、光合作用及其对扇贝排泄氮磷的吸收

Simultaneous removal of ammonium and sulfate from synthetic wastewater by anaerobic biodegradation;

废水中的脱氮除硫研究(英文)

The result indicated that ammonium and phosphate were the main factors that influenced the growth of chlamydomonas: the bloom began to occur as the ratio of ammonium and phosphate was 17, and the bloom rapidly regarded when the phosphate deduced to 0.

观测发现 ,水体中氮、磷的含量是影响水华发生的主要因素 :其中有效氮磷的比值为 1 7,这有可能就是导致水华中优势藻为衣藻的决定因素 ,并且当正磷酸盐浓度随着水华的不断发生而降至 0 。

Through investigating the influence of hydraulic retention time(HRT)and sludge retention time(SRT)on the removal of carbon(C),nitrogen(N),phosphorus(P)by A2/O system,the operating parameters of the system were optimized,and the mass balance and distribution of C,N,P under the optimal conditions were analyzed.

通过考察水力停留时间(HRT)和泥龄(SRT)对A2/O系统去除碳(C)、氮(N)、磷(P)的影响,对系统的运行参数进行优化,并分析了C、N、P三种元素在最佳工况下的物料平衡和质量分布。

Research on the dielectric barrier discharge nitrogen nitriding at atmospheric pressure have consumedly progressed.

利用介质阻挡放电进行常压氮气渗氮研究取得突破性进展。

Process and Mechanism of Ion-nitriding under the Atmosphere of N_2 and N_2-NH_3;

纯氮、氮—氨离子渗氮工艺和机理研究

An enzyme of nitrogen-fixing bacteria that activates the conversion of nitrogen to ammonia.

定氮酶在固氮细菌中催化氮转化成氨的一种酶

Discharge in Nitrogen: Research on N-doping and Synthesis of Nitrides;

氮气放电在氮掺杂及氮化物合成中的应用

Research on New Process of Ion Nitriding at Pure Nitrogen Atmosphere and Ion Nitriding Mechanism;

纯氮离子渗氮新工艺及离子渗氮机理研究

Study of Nitrogen and Its Related Complexes in the Nitrogen-implanted Silicon;

氮离子注入硅中氮及氮相关复合体的研究

Effects of Nitrogen Application Time on Carbon Assimilate and Nitrogen Translocation and Nitrogen Use Efficiency of Summer Maize

施氮时期对夏玉米碳氮运转及氮肥利用的影响

Experiment Research of New Biological Denitrification Process to Low C/N Wastewater of Nitrogenous Fertilizer Plant

氮肥厂低碳氮比废水生物脱氮新工艺试验研究

Relationship between soil nitrate,nitrogen balance and utilization in rainfed land

旱地土壤硝态氮与氮素平衡、氮肥利用的关系

To treat or combine with nitrogen or compounds containing nitrogen.

硝化用氮或含氮化合物处理或掺以氮或含氮化合物

asymbiotic nitrogen fixatio

非共生固氮（作用）

Simultaneous determination of the total nitrogen,ammonium-nitrogen,nitrite-nitrogen,and nitrate-nitrogen in wastewater by continuous fluxion analysis

连续流动分析法同时测定污水中总氮、氨氮、亚硝酸盐氮、硝酸盐氮

MnN production that nitrogen content is about6.880%～6.902% has been obtained.

获得了含氮高达6.880%6.902%氮化锰产品。

liquid carbonitriding

液体碳氮共渗, 液体渗碳氮化法

Test methods for nitrogen content of nitrogen-doped getter

GB/T6625-1986掺氮吸气剂含氮量测试方法

hydrinde azo dyes

茚满偶氮染料，苯并茂偶氮染料

Mycorhizae perform the function of nitrogen fixation and storage.

菌根起着固氮和贮氮的作用。

Increase of nitrogenous substances, especially urea, in the urine.

氮尿氮物质的增加，特别是尿里的尿素

Study on Adjustment of the Ratio of C to N by Adding N During Straw Turnover

秸秆还田添加氮素调节碳氮比的研究