氮 的英文怎麼說

中文拼音 [dàn]
氮 英文
名詞[化學] nitrogen （7號元素, 符號n）
  1. Study on desurphurization and denitrification of the absorptive catalyst from lignite

    褐煤基吸附催化劑脫硫脫氮的研究
  2. Strain hn could ammonize organic nitrogen compounds and nitrify ammonia itself when it grew on acetamide companying the formation of ammonia and nitrite

    該菌株能以乙酞胺為唯一碳源和氮源進行氨化作用和硝化作用並產生亞硝酸。
  3. Synthesis and crystal structure of - d - o - acetyl - glycopyranosyl azide

    吡喃葡萄糖疊氮化物的合成及晶體結構
  4. They clearly demonstrated that nitrogenase could catalyze the reduction of acetylene as well as n2

    他們明確地證明，固氮酶能催化乙炔以及N2的還原。
  5. Effect of acid rain on leaching loss of nitrogen and phosphorus

    酸雨對紫色土氮磷淋失的影響
  6. It can also restrain the decomposition of organic substances in the soil and the bind of nitrogen, and wash away the nutritious elements, such as magnesium, calcium, and potassium. the acid rain deprives the soil. it acidifies the rivers and lakes, and dissolves the heavy metal in the soil into water, therefore poisons the fish

    它可以直接使大片森林死亡，農作物枯萎；也會抑制土壤中有機物的分解和氮的固定，淋洗與土壤粒子結合的鈣、鎂、鉀等營養元素，使土壤貧瘠化；還可使湖泊、河流酸化，並溶解土壤和水體底泥中的重金屬進入水中，毒害魚類；加速建築物和文物古跡的腐蝕和風化過程；可能危及人體健康。
  7. Effects of atmospheric nitrogen deposition on forest soil acidification

    大氣氮沉降對森林土壤酸化的影響
  8. Effects of the iontophoresis of aconitine on the pain threshold of the rat adjuvant arthritis

    電針對大鼠足底疼痛病灶所屬脊髓節段一氧化氮合酶陽性反應的影響
  9. After analyzing purple soil sampled from neijiang, leshan ofsichuan provinec and yuanmou of yunnan province, the contrast results of microbe quantity feature between surface and subsurface purple soil were obtained as follows. the content of soil organic matter, total and available nitrogen, phosphorous and potassium of surface was higher than subsurface, not relating to the type of purple soil and soil utilization way. the quantity of microbe _ bacteria, actinomyces and mould in surface purple soil was higher than subsurface, which indicated that the organic matter and airy condition in surface soil was more suitable for microbes growing. there was the same tendency in profile change of microbe quantity in purple soil located in temperate _ humid climate of sichuan basin in contrast with dry _ hot climate of yuanmou, yunnan. the nutrient situation of purple soil in sichuan basin shown that state of surface was better than subsurface, while in yuanmou of yunnan the state was on the contrary due to the degradation of surface soil

    實驗室對四川內江、樂山和雲南元謀不同類型紫色土表層和亞表層微生物數量特性的比較分析表明：土壤有機質、氮磷鉀全量及其速效量均表現為表層高於亞表層，與紫色土類型和利用方式無關；三大類土壤微生物細菌、放線菌和黴菌數量均表現出表層高於亞表層，表明紫色土表層的有機質和通氣性優于亞表層，適宜於這三大類微生物生長；溫濕氣候條件下的四川盆地和乾熱氣候條件下的雲南元謀其紫色土微生物數量的剖面變化具有相同的趨勢，唯土壤營養狀況在四川盆地紫色土中表現為表層優于亞表層，而在雲南元謀紫色土中由於表層土壤的退化作用表現為亞表層優于表層的相反情況。
  10. The rhizosphere microflora dynamics of bacteria, actinomyces, fungi and four bacterial physiological groups of kentucky bluegrass under different quality of illumination were studied by adopting selective culture medium to explain scientifically response regular of this grass to different illumination condition

    摘要研究了草地早熟禾在不同光照條件下其根際與非根際細菌、真菌、放線菌以及氨化細菌、硝化細菌、好氣性纖維素分解菌、固氮菌生理類群的區系動態變化，擬從根際土壤微生物數量變化方面來闡述草地早熟禾對不同光照條件的響應規律。
  11. Acyl amine compounds containing nitrogen are rare in the plant essential oil

    含氮的酚胺類化合物在植物揮發油中並不多見。
  12. Fertiliser nitrogen must be a sensibly used tool and not an addiction in intensive grassland management.

    在集約的草地管理中，氮肥必須是合理使用的一種手段，而不是一種嗜好。
  13. Adenine a nitrogenous base ( 6 - amino - purine ) found in dna and rna

    腺嘌呤：在dna和rna中發現的含氮的堿基（ 6氨基嘌呤） 。
  14. Gas - filled shock absorber injected with pure n2, which not only keeps stability of damping force, but also reduce aerification and foaming, meanwhile, extend the effective life

    氣壓式內充入純氮氣，不僅可保持阻尼的穩定性，還可減少油液汽化及泡沫化，延長產品有效壽命。
  15. 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
  16. Ammonifiers in suzhou creek can not use inorganic nitrogen and carbamide as nitrogen source ; additional carbon source and garbage lixivium have little influence on ammonifiers growth ; high content of salt and low temperature restrain ammonifiers growth ; alkalescent condition has little influence on ammonifiers, but acidic condition restrain ammonifiers growth ; the biomass of ammonifiers are not necessary correlated with the function of ammonifiers, adding glucose with 1g / l content into the water sample obviously promote the growth and function of ammonifiers. physiological groups of bacteria play significant role in the translation and

    蘇州河的氨化菌無法利用無機氮和尿素作為氮源；在營養條件充足時添加額外c源和富含有機物的垃圾浸出液對氨化菌的生長基本無影響；高鹽度和低溫抑制氨化菌生長；堿性條件對氨化菌的生長影響不大，酸性條件對氨化菌生長具有抑制作用；氨化菌生物量的消長與轉氨活性之間不存在必然聯系， 1g / l的葡萄糖對蘇州河水樣中氨化菌的數量和轉氨功能具有明顯的促進作用。
  17. Fast neutrons are also captured by nitrogen.

    快中子也可以被氮吸收。
  18. The total rna was isolated from pokeweed ( phytolacca americana ) leaves using the method of guanidine isothiocyante and used as template to amplify the total length and deleted mutant pokeweed antiviral protein ( pap ) gene by rt - pcr and then the pap gene was cloned into pgem - t vector. the sequencing results showed that pap gene had 99. 9 % identity comparing with the pap gene nucleotide sequence reported by lin et al ( 1991 ). the iptg - inducible expression vector containing the pap gene was constructed and transferred into e. coli bl21 ( de3 ) - plyss

    將缺失型pap基因克隆到植物表達載體pbi121中，通過液氮冷凍法將重組質粒轉入農桿菌lba4404細胞中，然後採用葉盤法，在該農桿菌的介導下將pap基因導入普通煙草中，經過卡那黴素抗性篩選，最後獲得了轉pap基因的工程煙草植株，摩擦接種煙草花葉病毒（ tmv ） ，與非轉基因煙草相比，能夠推遲癥狀表現達2月之久，說明pap基因能夠在其它植物體內產生有活性的高抗病毒的蛋白質。
  19. Cyanide can serve as precursor for the amide nitrogen of asparagine.

    氰化物可以作一個天門冬酰胺的酰胺氮前體。
  20. The amide nitrogen of glutamine or asparagine functions more effectively than ammonia.

    谷酰胺或天門冬酰胺的酰胺氮作用較氨更有效。
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