飽和氮 的英文怎麼說
中文拼音 [bǎohédàn]
飽和氮
英文
r415saturated nitrogen(r-
Synthesis and characteristic of unsaturated alicyclic nitrogen heterocyclic crownethers
不飽和脂環氮雜冠醚的合成和結構表徵Saturated nitrogen tetroxide
飽和四氧化二氮Based on 2 - d - optimum orthogonal design field experiment in the jointing - heading period of phleum pratense l., the results show that potassium content is the most productive on the seed yield, phosphorus comes next and nitrogen the least
摘要採用二因素d -飽和最優設計,通過貓尾草拔節抽穗期的根氮、磷、鉀和莖葉氮、磷、鉀的含量對其種子產量和產量因子進行灰關聯熵分析。The central concept of alfisols is that of soils that have an argillic, a kandic, or a nitric horizon and a base saturation of 35 % or greater
淋溶土的主要特性是有粘化層,高嶺層或氮化層和鹽基飽和度達35或以上。Therefore, measurements of fertilization should ensure adequate n, p, k nutrient supply in the earlier and mid periods of maize growth, especially k application should be fully made before elongating stage, but a large amount of n fertilizer should be applied in tasseling and filling stages for uptake by plant to promote plump seeds so as to attain high maize yield
因此,施肥措施應保證在玉米生育早期和中期充足的氮磷鉀養分供應,尤其施鉀應在拔節前全部完成,但是在抽雄期和拔節期應施用大量氮促成飽滿籽粒而獲得玉米高產。Through analyzing the effect of temperature and nitrogen on crude oil viscosity the influences of different nitrogen injection volume and injection modes on steam displacement are contrasted, the mechanism of nitrogen - assisted steam stimulation is clarified, which includes : heat carrying capacity is raised, the saturation of remaining oil is reduced after nitrogen - assisted injection is made ; crude oil flow is enhanced because of nitrogen compression and dispersion and the change of oil flow shape ; water back - production rate is improved by expanding the steam sweep volume and compensating in - situ energy ; steam distillation effect is enhanced
通過分析溫度、氮氣對原油粘度的影響,對比不同注氮量、不同注入方式等對蒸汽驅油效果的影響,弄清了氮氣輔助蒸汽增產的機理主要表現在:氮氣輔助后增加攜熱能力,降低殘余油飽和度,氮氣的壓縮膨脹作用分散和改變了原油流動形態,增強了原油流動性;擴大蒸汽的波及體積,補充地層能量,提高回採水率,強化蒸汽蒸餾效應。The polarographic catalytic waves of organic compounds, such as protein, flavone, steroide, quinine, - unsaturated carbonyl compound, nitrogen - containing substances and charged surfactants, and their application are briefly introduced
簡要介紹蛋白質、黃酮類化合物、甾族類化合物、醌類化合物、 ,不飽和羰基化合物、含氮化合物和荷電表面活性劑等不同種類有機化合物的極譜催化波及其應用。In field study, the expenment on nitrogen transport and transformation in soils with different irrigation ( with both ground water and sewage effluent ) and fertilization levels has been conducted. with considenng the n - uptake, nitrification and demtrification processes, a model for describing no2 - - n transport and transformation in unsaturated soil has been applied. results show that, the n03 + - n accumulating in soil is contributed more by fertilization but lees by irrigation with sewage effluent, and the model can be used to simulate no3 - - n transport in soils
在室外進行了不同清污水灌水量與施肥條件下氮素遷移轉化試驗,同時進行了考慮根系吸收,硝化和反硝化的田間非飽和no _ 3 ~ - ? n遷移轉化模型的數值模擬,研究結果表明與施肥相比,污水灌溉對土壤中no _ 3 ~ - ? n累積的貢獻較小,所建立模型可用於模擬no _ 3 ~ - ? n在土壤中的遷移。The content of total fatty acids and polyunsaturated fatty acids per unit filtered water in the two lakes ( zhongxin and xiannu ) was remarkably higher than that of the two reservoirs. however, the content of two types of fatty acids per unit biomass of algae in the latter was higher than that of the former. meanwhile, the content of total fatty acids and polyunsaturated fatty acids per unit biomass of algae was evidently correlated with that of tn ( - 0. 646, - 0. 655 ) and tp ( - 0. 511, - 0. 400 )
從單位水量看,脂肪酸和多不飽和脂肪酸在氮、磷營養水平較高的中心湖和仙女湖濃度明顯高於兩座水庫;但從單位藻類生物量看,總脂肪酸和多不飽和脂肪酸含量與tn ( - 0 . 646 , - 0 . 655 ) 、 tp ( - 0 . 511 , - 0 . 400 )呈負相關,也就是說,在營養水平相對較低的流溪河水庫,單位藻類生物量脂肪酸和不飽和脂肪酸含量明顯高於中心湖和仙女湖。The results showed, the breakthrough curve of nitrate vertical transport in saturated condition was more or less non - symmetrical, mainly due to the different proportion of mobile and immobile water in the soil and soil physical properties
結果表明,在飽和條件下,硝態氮垂直運移過程的穿透曲線呈現不對稱形狀和拖尾現象,主要由於土壤中存在著動水和不動水的比例不同和土壤的物理性質所致。2. co ( salen ) / nafion modified platinum electrode ( 1 ) the nitric oxide in the medium of natural seawater was determined using co ( salen ) / nafion modified platinum electrode for the first time, the best conditions are found as follows : the time of exclusion of oxygen bubbled with nitrogen for the electrochemical cell is 30min, the preparation time of saturated solution is 30min, the enrichment time is 3min when the concentration of nitric oxide is 10 - 6 mol / l and 7min when 10 - 7 mol / l and the electrochemical responses of the modified platinum microelectrode to no were evaluated by scanning from 0. 2v to iv
天然海水介質中~氧化氮的電化學鋇定二、 eo ( sa一en ) znanon修飾電極1 .首次用co ( salen )閃afion修飾鉑電極對天然海水介質中的一氧化氮進行了測定,確定了最佳實驗條件,即反應池通氮除氧30min , no飽和溶液的制備時間為3omin , no溶液濃度在10一6mol / l時?富集時間是3min ,濃度在10一7mol / l時富集時間是7min ,電位掃描范圍0 . 2一1The effects of forest fires on soil moisture content, separate coefficient, porosity, water - retaining capacity, organic matter, available n, available ca, fungi and fine root significantly varied between the years after burning. the effects of forest fires on soil separate coefficients, porosity, saturated water - retaining capacity, available mg, fine root significantly varied between the fire intensity
火燒後年限對土壤含水率、分散系數、孔隙度、持水量、有機質、有效氮、有效鈣、真菌、細根系生物量的影響有顯著差異;火燒強度對上壤分散系數、孔隙度、飽和持水量、有效鎂、細根系生物量的影響有顯著差異。The data needed by the research are collected from relevant materials and field sampling, including the soil saturation hydraulic conductivity, soil bulk density, various kinds of chemical parameters of soil layer ( such as organic nitrogen, organic phosphorus and soluble phosphorus ), the transformation of organic carbon content of soil layer and the land use in 1993 etc.
筆者兩次參加對研究區的實地考察,並進行相關數據的收集和實測,包括1993年土地利用、土壤飽和導水率、土壤容重和土壤各種化學參數(如有機氮、有機磷和可溶性磷等) ,以及后來所進行的土壤層有機碳含量的轉化等。The thermal decompostion kinetics of up / montmorillonite nanocomposites under nitrogen was studied. the reaction order and apparent activation energy of nanocomposites were obtained by freeman - carroll method. the results indicate the thermal stability of nanocomposites is higher than pure up ' s
研究了氮氣氣氛下不飽和聚酯蒙脫土納米復合材料的熱分解動力學,用freeman - carroll法確定了復合材料的反應級數n和表觀反應活化能e 。Nation modified platinum electrode ( 1 ) the nitric oxide in the medium of natural seawater was determined using nafion modified platinum electrode for the first time, the best conditions are found as follows : the time of exclusion of oxygen bubbled with nitrogen for the electrochemical cell is 30min, the preparation time of saturated solution is 30min, the enrichment time is 5min and the electrochemical responses of the modified platinum microelectrode to no were evaluated by scanning from 0. 2v to iv
主要研究結果如下:一、 nafion修飾鉑電極1首次用nafion修飾鉑電極對天然海水介質中的一氧化氮進行了測定,確定了最佳實驗條件,即反應池通氮除氧30min , no飽和溶液的制備時間為30min ,富集時間是5min ,電位掃描范圍0 . 2 1 . 0v ,並且確定了nafion修飾電極的檢出限是1 mol l ,線性范圍1 76 . 9 mol l ,相關性良好。Under unsaturated condition, the duration of the transport process was obviously prolonged, peak value of the breakthrough curve raised, the preferential flow was not significant and the curve was gently
在非飽和條件下,硝態氮運移過程的時間明顯加長,穿透曲線的峰值增高,優先流不明顯,穿透曲線平緩。Ecophysiological mechanism underlying the impacts of nitrogen saturation in terrestrial ecosystems on plants
陸地生態系統氮飽和對植物影響的生理生態機制分享友人