除氮 的英文怎麼說

中文拼音 [chúdàn]
除氮 英文
denitrify
  • 除 : Ⅰ動詞1 （去掉） get rid of; eliminate; remove 2 [數學] （用一個數把另一個數分成若干等份） divide:...
  • 氮 : 名詞[化學] nitrogen （7號元素, 符號n）
  1. Using ethyl cyanoacetate, triethyl orthoformate and methylhydrazine as main raw materials, the herbicide pyrazosulfuron was prepared through the reactions of substitution, amination, cylclization, diazotization and chlorosulfonation

    摘要以氰乙酸乙酯、原甲酸三乙酯和甲肼等為主要原料，通過取代、胺化、環化、重氮化和氯磺化等反應制得了除草劑吡嘧磺隆原料藥。
  2. The results showed that the mean proportion of polymorphic loci ( ppb ) of anabasis aphylla, which comprised 3 subpopulations ( 58 individuals sampled ), generated by 16 primers was 94. 56 %, the value of ppb of ceratocarpus arenarius, which had 4 subpopulations ( 80 individuals sampled ), using 16 primers was 98. 00 %. the paper had proved that the higher genetic diversity and the genetic differentiation existed in the populations of boih anabasis aphylla and ceratocarpus arenarius, while the latter had much more genetic diversity than the former. moreover, the study discussed the shannon information index and nei ' s gene diversity index of the two species natural populations, which indicated that there were more genetic variations within the subpopu

    另外，通過rapd資料的聚類分析及相關性分析研究，發現無葉假木賊和角果藜自然種群的遺傳結構與綠洲沙漠過渡帶的微生境生態因子（主要是土壤因子）相關，其中無葉假木賊亞種群遺傳多樣性水平不僅與土壤含水量（ w ） 、鉀鈉離子濃度（ k + na ）和氯離子濃度（ cl ）呈顯著的正相關（ p 0 . 05 ） ，還與土壤中有機質（ som ） 、全氮（ nt ）和全磷（ pt ）含量呈顯著的負相關；同時，角果藜種群的遺傳多樣性水平與土壤中有機質（ som ）和全氮（ nt ）含量呈顯著的正相關，而與co _ 3 ~ （ 2 - ）濃度呈顯著的負相關；除此之外，其它土壤生態因子與兩物種遺傳多樣性水平的相關性均不顯著（卜0 . 05 ） 。
  3. In order to decrease expenditure and increase total economic efficiency, the key technique consisted of a complete sets of base fertilizer heavily, stabilizing n, increasing p and k, herbicide, coordinating of irrigation, fertilization and dpc regulation in first - flowering time, water - saving by furrow irrigation, simple pruning of cotton plants, chemical accelerating the ripening and so on

    以重施基肥，穩氮增磷增鉀，化學除草，初花期水、肥、控同步，溝灌節水，簡化整枝及化學催熟等項技術組裝配套，達到節支省工，提高整體經濟效益。
  4. This device helps vent gas that boils off from the liquid oxygen tank, and also bathes the top of the tank in warmed nitrogen to prevent ice from forming.

    這個裝置有助於排除液氧燃料箱蒸發的氣體，並且它還可以用加溫氮氣籠罩箱頂，以防結冰。
  5. In combination with project example of the application of microporous aeration and carrousel 2000 oxidation ditch process in a municipal sewage treatment plant, the advantages and disadvantages of the process flow compared with others were described ; the basic principle of degrading organic substance and removing phosphorous and nitrogen by means of the process flow was analyzed ; the main design parameters and economic and technical indices for various structures were put forward

    結合某城市污水處理廠採用微孔曝氣、卡魯塞爾- 2000型氧化溝工藝的工程實例，闡述了該工藝流程相對于其它工藝流程的優、缺點;分析了該工藝流程降解有機物及除磷、脫氮的基本原理;並提出了該工藝流程中各構築物的主要設計參數及技術經濟指標。
  6. Effect of nitrate concentration on phosphorus removal in denitrifying dephosphatation system

    硝氮對反硝化除磷系統效率的影響
  7. Effects of removal of the shoot apex and leaf wounding on nitrogen uptake and nicotine production were studied with tobacco plants grown in sand or hydroponic medium under the controlled conditions

    摘要採用砂培和營養液培養方法，研究了在營養生長階段切除頂芽和葉片損傷對煙株生長、體內煙堿濃度、氮濃度及吸氮量的影響。
  8. It was suggested that the urban sewage of shanghai city be de - nitrogenized and de - phosphorusized before releasing in order to control the occurrence of red tide

    ?控制赤潮的發生，建議上海城市污水排放前進行脫氮除磷處理。
  9. 67 - 154. 02 % ( no determinate in paddy field on quaternary red clay ), respectively. after organic amendments and fertilizers were added to the metsulfuron - methyl - contaminated soils, microbiai biomass c increased by 0. 23 - 113. 14 % in paddy field on desalting muddy polder, 0. 30 - 46. 48 % in blue clayed paddy, and 1. 82 - 83. 76 % in paddy field on quaternary red clay, respectively, microbiai biomass n in correspoading soils by 4. 27 - 67. 87 %, 5. 43 - 58. 36 % and 5. 05 - 95. 40 %, respectively, and microbiai biomass p by 6. 03 - 139. 59 % 4. 09 - 141. 26 % ( no determinate in paddy field on quaternary red clay ), respectively

    （ 4 ）添加有機、無機物質后，勞去津除草劑污染的三種土壤中微生物生物量碳、氮隨培養時間變化的趨勢基本一致，即0 ~ 7d微生物生物碳、氮降低，但第7d時，添加有機、無機物質的處理中微生物生物量碳、氮均高於僅加養去津的處理和空白對照; 7 ~ 14d微生物生物量碳、氮迅速增加; 14 ~ 42d又下降， 42d后變化較小。
  10. With the domestic and foreign advanced oxidizing preconditioning ( it can remove ammonia and nitrogen organic material, humic acid, magnesium and hvm film ) separating technology, it separated solid precipitant from brine so as to obtain purified salt brine

    該工藝採用國內外先進的氧化預處理除氨氮有機物、腐植酸、鎂和hvm膜分離技術將反應生成的固體沉澱物從鹵水中分離出來，從而得到純凈的鹽鹵水。
  11. Phosphates and sodium nitrate are used for the sequestration of insoluble calcium or magnesium salts, while the task of removing mineral deposits from stainless steel surfaces is facilitated by the use of acid solutions, usually solutions of nitric or phosphoric acid

    磷酸鈉及硝酸鈉用於隔離不能溶解的鈣鹽或鎂鹽，而從不銹鋼表面去除沉積的無機物通常使用酸溶液，一般是用含氮酸或磷酸溶液。
  12. The solution was then sparged with nitrogen to remove any residual benzene or any chlorine formed in the oxidation step.

    然後用氮噴射溶液，除去任何殘留的苯和在氧化時生成的氯。
  13. Batch experiment on reduction of nitrate in water by nanoscale zero valent iron particles

    納米鐵去除水中硝酸鹽氮的批試驗
  14. In order to produce monoclonal antibodies, first, several v. dahliae isolates were grown in liquid czapeak medium, after rinsing mycelia and eliminating zoospores, the fungal tissue was homogenized with the pestle in liquid nitrogen and then transferred to test tubes and was centrifuged in tris - hcl buffer

    在制備抗原的過程中，首先液體振蕩培養了若干株棉花黃萎病菌，經過沖洗除孢子、液氮研磨，用tris - hcl抽提，再離心制得菌絲蛋白提取液，可作為電泳樣品。
  15. Generally, soil total p increases after burning, but the soil total p after moderate and high intensity fires returned to level before burning slower than after low intensity fires, which is consistent with soil available n. the changes of soil k, mg are great after burning

    但6年以後，土壤氮的含量有增加的趨勢。除少數跡地外，火燒後土壤全磷含量在若干年內呈增加的趨勢，但中、高強度火燒跡地土壤全磷含量的恢復較低強度火燒跡地慢。
  16. Briefly, the method includes four steps : culturing a sample to the maximum growth of autochthonous microorganism, filtering to remove the original biomass, inoculating the filtrate with certain kind of nitrogen fixing bacterium and determining the bacterial growth potential

    該方法主要包括4個步驟：將樣本在合適的條件下培養，讓土著微生物得到最大限度的生長，然後過濾或離心去除初級生物量，在濾液中接入固氮細菌，並測定固氮細菌的生長潛能。
  17. To remove nitrogen from wastewater using biological nitrification, biological de - nitrification, biological nitrification de - nitrification, chlorination and ion exchange, etc

    除氮：去除廢污水中氮成分，常用的方法有：生物硝化法、生物脫硝法、生物硝化
  18. Advanced treatment is the treatment to further remove nitrogen, phosphate, solids, salt, color and odor from the biologically treated effluent as well as to achieve disinfection. advanced treatment is also called tertiary treatment

    高級處理系指廢污水經過生物處理后，再將其放流水予以除氮、除磷、除固體物、除鹽、脫色、除臭及消毒等處理程序，高級處理亦稱為三級處理。
  19. According to simplifying activated sludge process no. 1 model ( asm1 ), n - removal dynamic models in continuously mixed, continuously fed activated sludge process ( asp ) are established by employing expert experience about activated sludge process. then predictive control approach is applied to optimal control of this process. the simulation results show that it can cover the relative expert experiences more widely by applying mld to modeling and control of activated sludge process

    5 .應用mld法，對asmi模型進行簡化，建立了連續進水間歇曝氣活性污泥法除氮動態模型，通過模擬結果，可知:採用mld方法，可以充分利用有關連續進水間歇曝氣活性污泥法的專家經驗知識，加入到模型中，使模型更加精確，控制和優化的效果更好。
  20. Abstract : effective removal of no by catalytic process has attracted extensive attentions and a host of the novel catalysts have been developed in the last decade

    文摘:如何看效地脫除氮氧化物是目前空氣污染治理的一個重點和難點，催化還原和催化分解是目前研究得較多的脫除氮氧化物方法。
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