纯氮

间歇供N2闭炉的纯氮离子渗氮工艺

Pure Nitrogen Ion Nitriding under Furnace Shut and N_2 Provided Intermittently

高纯氮中微量CO、CH4、H2及CO2分析方法的研究

The Research for Analytical Method about Trace-CO , CH_ ( 4 ) and CO_2 in High Pure Nitrogen

用大气压离子质谱测定高纯氮中的痕量N2O和NO

Determination of Trace Impurities N_2O and NO in High Purity Nitrogen Gas by Atmospheric Pressure Ionization Mass Spectrometer

因此我们认为N3处理（施纯氮22.5Kg/667m~2）的果穗营养品质好，食味品质优，为本试验设计下的最佳施氮水平。

So fertilization level of N_3 ( 22.5 Kg of pure nitrogen per 667m ~ 2 ) was considered to yield spikes with high nutrition quality and taste quality .

研究了粉末烧结Cu－0.75%（wt）Al合金在高纯氮气体介质中的内氧化动力学。

Internal oxidation kinetics of the sintered Cu 0.75 % ( wt ) Al alloy has been studied in highly pure nitrogen gases .

在相同的渗氮时间里，间歇供N2闭炉的纯氮离子渗氮可获得比常规纯氨离子渗氮更好的渗氮效果。

In the same nitriding time , the nitriding effect by the technique is better than the conventional ammonia ion nitriding .

混合物和纯氮工质在一种JT节流制冷机上热力性能的对比实验

Experimental comparison of thermodynamic performance of mixed refrigerant and pure nitrogen in an opened cycle JT cooler

用高纯氮气体做介质对Cu-0.75%Al粉末烧结合金进行内氧化处理，用X-ray衍射、SEM和TEM等分析技术对其进行研究。

Internal oxidation treatment were carried out in an internal oxidizing apparatus for a Cu-0.75 % Al powder sintering alloy , and microstructure were investigated by means of SEM , TEM and X-ray .

1水分胁迫抑制洋葱植株生长发育，Nh（纯氮30kg/亩）可以减缓由于水分胁迫对洋葱植株生长发育抑制作用。

The results are as follow : 1 The water adversity restrains the growth and development of onion plant , the Nh can alleviate the restrained function .

当DCD施用量为纯氮量3%时，油菜氮素利用率可显著提高6.66个百分点。

When DCD 3 % was applied to urea , it could significantly improve nitrogen use efficiency by 6.66 percentage points .

施60kg／hm2纯氮处理几种化学成分比值优于其它处理，内在品质颇佳；

The ratios of several components and internal quality of 60kg / hm 2 N were suprior to those of other treatments .

报道了采用混合物工质及纯氮工质在一种开式快速JT节流制冷机上的实验对比研究。

This paper first reports the experimental comparison results of thermodynamic performance of an open cycle JT cooler with mixed refrigerant and pure nitrogen in China .

不同色级适宜的施氮量为每亩0～4kg纯氮。

The optimum nitrogen application ranges from 0 to 4 kg N per mu at this stage .

从蛋白质含量、蛋白产量、淀粉含量和淀粉产量分析结果可以得出，公顷施纯氮200kg最佳。

Pure nitrogen quantity of 200 Kg · hm-2 is best for protein content , protein yield , starch content and starch yield .

利用微波放电激励高纯氮，并采用放大自发辐射法，研究了不同微波激励功率和不同N2气压条件下N2分子二聚物352.3nm辐射的增益特性。

Utilizing microwave discharge to excite the high pure nitrogen , and adopting the method of amplified spontaneous emission , the gain characteristics of N_2 molecular dimer at 352.3 nm is studied under different microwave exciting power and N_2 pressure .

我们用API－MS法对高纯氮中的痕量氧进行了定量分析，结果表明，测量灵敏度达1×10－9mol／mol，而测量精度优于±10%。

We have quantitatively analyzed the trace oxygen in high purity nitrogen by means of API MS. The results show that the measurement sensitivity reaches 1 × 10 - 9 mol / mol with accuracy better than ± 10 % .

KFD-41000型空分装置生产高纯氮的理论计算与分析

Theoretical calculation and analysis of the production of high-purity nitrogen by model KFD-41000 air separation plants

介绍了应用HYSIM对深冷法空气分离制备高纯氮设备的流程模拟。

This work has been made with HYSIM for process simulating of producing high purity N2 via air separation by heavy cooling .

每公顷施纯氮150kg（N150）和纯硫20kg（S20）可以提高峰值粘度、低谷粘度和最终粘度，改善淀粉品质。

The fertilization at 150 kg nitrogen and 20 kg sulphur per hectare could raise the peak , trough and final viscosities thus improving starch quality .

结果表明，纯氮离子渗氮存在电压门槛值，只有在700V左右的高电压下，并且采用间歇供N2闭炉方式进行离子渗氮，才能产生明显的渗氮效果。

Experimental results show that there exists a voltage threshold in the ion nitriding with pure nitrogen . Only when the voltage is high as 700 V or so , the technique will produce obvious nitriding effect .

施用氮肥对小麦产量有极显著影响，在施纯氮0~240kg/hm2范围内，每增减纯氮1kg，增减籽粒产量5.7kg；

The nitrogenous fertilizer had extremely influence on wheat yield , within 0 ~ 240 kg N / hm ~ 2 , every kg pure nitrogen could increase 5.7 kg grain yield ;

随氮素用量增加，叶绿素含量均增加，但到生长中后期以施60kg／hm2纯氮处理叶绿素含量适中，能正常落黄成熟；

Chlorophyll content increased along with the increase of nitrogen amount , but to the late middle stage of growth , the Content was optimum under the condition of 60kg / hm 2 N , which led to nomal maturity .

用组合成的可溶性聚硅烷1710A作涂膜材料，进行不同温度的真空热解或高纯氮下热解实验。

Using compositional soluble polysiloxane 1710A as film coating material , vacuum or high purity nitrogen pyrolysis experiments are made in different temperatures .

三个施氮处理中，15kg/667m2纯氮处理的产量达到最大值，20kg纯氮处理的产量有所下降，说明氮肥施用过量会使油菜产量下降。

Three N treatments , the yield of15kg / 667m2nitrogen processing maximum , 20kg / 667m2nitrogen processing production has declined , indicating that the decline of nitrogen fertilizer overdose causes the yield of rapeseed .

本文用热力学原理分析了Si-Mn氧化物还原的热力学条件，并根据其热力学分析结果，对水雾化Si-Mn钢粉采用热塑性树脂涂层，在高纯氮气氛中进行脱氧的新工艺研究。

We applied the thermodynamic principle to analyze the thermodynamic condition for deoxidizing the oxide of Si-Mn . According to our result , we designed a new technigue , the surface of water-atomized Si-Mn steel powder deoxidized in pure N2 with thermoset resin .

将失活催化剂在500℃的空气流中焙烧数小时后，再用（NH4）2SO4溶液浸渍补充流失的SO42-，最后，在高纯氮气流中焙烧4小时。

Deactivated catalyst can be regenerated by calcination in dry air at 500 ℃ for a couple of hours . Next , the calcined catalyst was impregnated a certain amount of ( NH4 ) 2SO4 . Finally , it was calcined in dry nitrogen at 500 ℃ for 4h .

结果表明，合适的施氮量（公顷施纯氮210kg）可以增加群体叶面积指数、提高光合速率、改善群体光环境，最终达到增加产量和改善品质之目的。

The result showed that appropriate nitrogen fertilizer ( N210kg · hm-2 ) could raise yield and improve quality by increasing canopy leaf area index , raising net photosynthesis rate and improving the light environment .

合理的肥料运筹是获得高产的调节手段，中籼杂交稻每公顷施纯氮225kg左右，中粳稻每公顷施纯氮292.5kg，有利获得高产。

Reasonable nitrogen management was an adjusting method of achieving high yield . It was useful for high yield to use pure nitrogen 225kg / hm 2 in medium japonica hybrid rice and 292.5kg/hm 2 in medium indica rice .

并提出，在北方粳稻栽培区，每公顷氮肥施用量在120kg纯氮的条件下，补肥和穗肥的施用量应各为总氮量的30%为宜。

The same time , in north japonica rice region , make it a condition that fertilizing amount is 120 kg / hm2 ( pure nitrogen ), supplemental fertilizer and earing fertilizer should be used both are 30 % of amount nitrogen .

结果表明：上海郊区不同土壤类型种植的单季晚稻，用肥在每亩施有机肥750kg猪塮的基础上，亩施7.5～10kg纯氮。

The results obtained have been shown that the rational fertilizer amount for single cropping system late rice grown on the different type of soil in the suburbs of Shanghai , spreaded 1500 Jins and 15-20 Jins nitrogen per Mu at the same time .