缺氮 的英文怎麼說

中文拼音 [quēdàn]
缺氮 英文
minus nitrogen
  • 缺 : Ⅰ動詞1 （缺乏; 短少） be short of; lack 2 （殘缺） be missing; be incomplete 3 （該到而未到） be ...
  • 氮 : 名詞[化學] nitrogen （7號元素, 符號n）
  1. 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。
  2. 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。
  3. Cytoarchitectonics of neuronal nitric oxide synthase immunopositve neurons in caudate putame of rats with cerebral ischemia

    腦缺血大鼠尾殼核神經元型一氧化氮合酶免疫陽性神經元的細胞構築
  4. Daw so v l, daw son t m, batley d a, et al. mechanism of nitric oxide mediated neurotoxity in primarty brain cultures [ j ]. j neurosic, 1993, 13 ( 6 ) ： 2651

    陳琳，高署，胡成穆，等.一氧化氮及一氧化氮合酶在腦缺血損傷中的作用[ j ] .安徽醫藥， 2004 ， 2 （ 8 ） ： 5
  5. The calcium products, a variety of elements nitrogen, which is necessary for some nutrients seedling growth can induce root growth seedling vigor, flower, bao lei, 4. 2 peach, rapid calcium, nitrogen and other trace elements that can prevent root blight, fusarium wilt, leaf, blight of rot. weak seedling bud abortion, a potent rotten peach can enhance seedling drought and frost - proof, anti premature senility, anti - std calciprivia plant capacity promotion developed root seedlings seedlings healthy and steady early, squaring focus block chu high boll early, rapid expansion of peach, peach increased weight gain., 1999 chang, the color white lint high, up to 25 to 35 % yield

    本產品含鈣、氮多種元素，是棉苗生長所必需有的養份，能促使棉苗根部生長旺盛，保花、保蕾、膨桃，能快速補鈣、氮等微量元素，可預防根枯病、枯萎病、小葉病、立枯病，對爛根、弱苗、花蕾敗育，爛桃有特效，能提高棉苗抗旱、防凍、抗早衰、抗植物缺鈣性病能力，促進根系發達、苗壯苗健、穩長早發、現蕾集中、座鈴率高、成鈴早、膨桃快、桃增大增重、吐絮暢、色澤白、衣分高，增產可達25 - 35 % 。
  6. Abstract : fdp has many actions for mice, such as antifatigue, antioxygen - deficient, decreasing urinary nitrogen output of fatigue mice, improving glycogenesis and decreasing glycogen consumption

    文摘:福達平（ fdp ）對小鼠具有抗疲勞、耐缺氧、降低疲勞小鼠血清中尿素氮質量濃度、促進糖原儲備、降低糖原消耗等作用。
  7. The effects of simvastatin on expression of nitric oxide synthase in cultured human endothelial cells dur ing hypoxia - reoxygenation

    缺氧復氧損傷對血管內皮細胞一氧化氮合成酶基因表達的影響及辛伐他汀的干預作用
  8. Corn is one of the best indicators for nitrogen deficiency among the field-crop plants.

    玉米是大多數大田作物中缺氮的最好的指示植物。
  9. Eng. ) 1. know the fertilizers ( the appearance, properties, physical and chemical nature which includes the organic and inorganic fertilizers ) ; 2. determining the quality ( three major elements of the fertilizers ) and quantity ( the content of the moisture, nitrogen, phosphorus, and potassium ) of chemical fertilizer ; 3. the fertilizer composition expresses and calculation of the amount of application ; 4. it is cultivated in a pot or nutrient solution to test fertilizer effects ; 5. observe plant body : besides observing one ' s own test cultivated in a pot, and another diagnose the picture is for comparing ; 6. making of the compost

    中） 1 .認識肥料（包括有機、無機肥料的外觀、性狀、理化性質） ； 2 .化學肥料的定性（肥料的三要素）及定量（水分、氮、磷、鉀的含量）檢定； 3 .肥料成分表示方法及肥料施用量的計算； 4 .盆栽試驗或水耕試驗（印證報酬漸減率、麥氏理論或肥料元素缺乏徵狀，並進行農藝性狀調查） ； 5 .植體觀察：除了觀察自己的盆栽試驗以外，另備有診斷圖片以供比較； 6 .有機堆肥的製作。
  10. Expression changes of nitric oxide synthase after cerebral ischemia reperfusion injury in rats and the effect of timosaponin on it

    腦缺血再灌注損傷后一氧化氮合酶表達變化及知母總皂苷對其影響
  11. Influence of glucose - insulin potassium on the content of amino acid and the concentration of nitric oxide in rat brain after acute cerebral ischemic reperfusion

    極化液對急性腦缺血再灌注大鼠腦內氨基酸和一氧化氮濃度的影響
  12. Putting the potassium permanganate into the filter can improve its effect, the removal of organics and ammonia is increased, the influent concentration can satisfy the water reuse standard. but the turbidity of influent is unsatisfactory. the c / n ratio is the key factor to influence the nitrogen - removal of the anoxic / aerobic two - stage baf when the reflux ratio 、 hydraulic loading and the ratio of gas to liquid in aerobic filter are fixed. the anoxic / aerobic two - stage baf has a good removal of organics at different c / n ratio when the reflux ratio is 2, hydraulic loading is 2. 55m ~ 3 / m ~ 2 ? h and the ratio of gas to liquid in aerobic filter is 3 : 1. the influent concentration of organics is blow 7mg / l. from the beginning to 30cm of the anoxic filter, the removal of the organics is significant ; as the c / n ratio increasing, the influent concentration of ammonia is decreasing. when the c / n ratio is 3. 60, the enfluent concentration of ammonia is 3. 05mg / l which satisfies the water reuse standard. when the c / n ration is less than 3. 60, because of the imperfection

    迴流比為2 : 1 ，水力負荷為2 . 55m3 / m2 ? h ，好氧柱氣水比為3 : 1時試驗表明:不同的c / n （ 1 . 05 7 . 45 ）下，兩級曝氣生物濾池對有機物有很好的去除作用，出水有機物濃度小於7mg / l ，其中在缺氧柱進水端30cm內對有機物的去除最為明顯;隨著c / n的增加，系統出水氨氮濃度降低，當c / n為3 . 60時，出水氨氮濃度降到3 . 05mg / l ，已經滿足回用水的氨氮標準; c / n < 3 . 60時，因為缺氧柱的不完全反硝化，體系中硝酸鹽氮和亞硝酸鹽氮發生積累影響了好氧柱的硝化反應使氨氮降解效果較差;系統對總氮的去除隨著c / n的增加而增加，當c / n為3 . 60時，出水總氮已經降到11 . 18mg / l ，滿足回用水的要求。
  13. Irradiation defects decompounded and recombined with oxygen impurity and large quantity of nucleation centers were introduced in czsi bulk during annealing at 1100. in nitrogen atmosphere, more defects were induced in fast neutron irradiated czsi than in argon atmosphere

    不同氣氛下快中子輻照直拉硅中缺陷形成的差異很大， 1100的高溫退火中，與氬氣氛相比，氮氣氛退火樣品中出現了更多缺陷。
  14. We researched fabrication at different asputtering and annealing atmosphere, the different process conduced different electrical properties. we can conclude a higher annealing temperature and higher proportion of o2 during reactive sputtering favors the improvement of electrical performances of hfo2 dielectrics ; 4. the analysis of i - v curves of these devices displays different leakage current mechanism under different area of applied bias - voltage ; as to silc. there are different leakage current mechanism at influence of sil. c ; 5

    研究表明，在優化工藝條件下制備的hfo _ 2介質層中，襯底注入條件下由於其較低的體和界面缺陷密度，漏電流的輸運機制主要以schottky發射為主; silc效應導致hfoz / si界面缺陷態的增加，從而使得襯底注入條件下，柵泄漏電流機制不僅有schottky發射還有f一p發射機制起主要作用; 5 ）初步研究了氮化的hfo : （ hroxny ）柵介質的電學特徵。
  15. In some plants, a mild nitrogen deficiency at certain stages of development may be desirable.

    許多植物中，輕度缺氮在其發育的某些階段可能是適宜的。
  16. As regards fertility status, almost all soils are deficient in n and about 90 % are low to medium in p

    至於肥力狀況，幾乎所有土壤缺氮，約90 %土壤低磷或中磷。
  17. Assessed form mar - scope, the soil nutrient of the cultivated land was nitrogen - sufficient, phosphorus - deficient and potassium - opportune

    而從宏觀角度評價，黔江耕地的土壤養分可概括為缺氮貧磷適鉀。
  18. The study was performed to explore how image technique can be used to diagnose the nitrogen deficiency in plant

    本研究工作利用圖像處理技術對植物缺氮進行診斷，為建立一套完整的氮營養診斷專家系統提供理論依據。
  19. The research included two parts. firstly, the statistic methods of image histogram and arithmetic of measuring areas of 2d - materials were introduced by using the character data of plant which was in nitrogen deficiency condition, and then designed the soft with visual c + +

    本研究工作分為兩個部分，第一部分主要根據植物缺氮時的特徵值，提出圖像處理的直方圖統計和二維物體面積測量的方法，並提出演算法，利用visualc + +根據演算法編寫提取特徵值的軟體。
  20. Secondly, soybeans were cultivated under different nitrogen level in nutrient solution ; the soft was used to statistics the histogram of leaf rgb color value and to calculate the leaf area. the statistics of biomass also was done. the combination of the two ways has revealed the relationship between the digitization rule of rgb and nitrogen level in leaf

    第二部分在不同的供氮條件下，培養出具有典型缺氮特徵的大豆，利用診斷軟體對葉片圖像進行rgb灰度直方圖統計和葉面積的綜合計算，同時也進行生物量的統計，兩者結合揭示數字化葉片rgb特徵值與供氮水平之間的規律。
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