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- Ammonium is toxic and is converted to organic nitrogen compounds in the root. 銨有毒,在植物根部被轉化為有機含氮化合物。
- The N in the SOM existed mainly in the form of organic nitrogen, and the soil C:N was significantly correlated with SOM. 土壤中的氮素主要以有機氮的形式存在于土壤有機質(zhì)中,土壤碳氮比與有機質(zhì)含量顯著(zhù)相關(guān)。
- There are four major processes in biogeochemical cycling: nitrification fixation;organic nitrogen ammonification;nitrification, and denitrification. 這一地區氮的生物地球化學(xué)循環(huán)包括:生物固氮、有機氮的氨化、氮的硝化、反硝化等4個(gè)主要過(guò)程。
- The reaction of organic nitrogen compounds in wastewater with chlorine will form toxic and harmful organic chloramines during the chlorination. 在氯消毒過(guò)程中,污水中的含氮有機物與氯反應會(huì )生成有毒有害的有機氯胺。
- The effects of inorganic and organic nitrogen sources on synthesis and secretion of gentamicin in shake flask fermetation were studied. 研究了無(wú)機與有機氮源對慶大霉素合成與分泌的影響。
- The production of erythromycin in the shake flask is apparently influenced by adding different kinds of organic nitrogen source. 紅色糖多孢菌的搖瓶培養基中采用不同有機氮源時(shí)紅霉素的效價(jià)明顯不同。
- Dissolved organic carbon(DOC) and dissolved organic nitrogen(DON) are rarely measured together when studying dissolved organic matter(DOM) in lake water. 溶解有機氮(dissolved organic nitrogen;DON)與溶解有機碳(dissolved organic carbon;DOC)相結合在湖泊水體溶解有機質(zhì)(dissolved organic matter;DOM)的研究中少有報道.
- The result showed that thereby suggesting lactic acid could be produced more economically by using CSL as organic nitrogen,and reduce the pollution of CSL to the environment. 在保證生產(chǎn)能力的同時(shí),使用玉米漿為有機氮源對進(jìn)一步降低L-乳酸生產(chǎn)成本,減少玉米漿對環(huán)境的污染進(jìn)行了探索。
- The wastewater of hexanolactam (nylon) fiber production in Shijiazhuang Synthetic Fiber manufactory is high concentrated with organic nitrogen compounds. 己內酰胺錦綸化纖廢水屬于高含氮高濃度有機廢水。
- The results suggested that the yield of L-ornithine was increased 26.4% by using yeast hydrolysate as organic nitrogen source and 10.4% by adding 1.0% succinic acid. 結果表明;使用廢酵母作為有機氮源后;L-鳥(niǎo)氨酸的產(chǎn)量增加了26.;4%25。加入1
- Results show that, nitrogen removal rate in the sedimentation tank (ST) unit is not apparent, where the mineralization of organic nitrogen to NH4(superscript +) may happen. 研究表明,沉淀池除氮效果最不明顯,在該區內有機氮可能發(fā)生礦化作用而轉變?yōu)榘钡?/li>
- The removal effects on COD,SS and organic nitrogen and the main process parameters were investigated.The effect of salinity on wastewater bio-treatment was discussed. 考察了該工藝對廢水COD、固體是浮物(SS)、有機氮等的出除效果,關(guān)鍵工藝參數,同時(shí)探討了鹽濃度對廢水生物處理效果的影響。
- The range of organic nitrogen forms was nonhydrolysable N>amino acid N>ammonium N> hydrolysable unidentified N>amino sugar N under fertilization conditions. 不同施肥處理有機氮各組分含量隨著(zhù)土層的加深而下降,與有機質(zhì)的變化規律一致;
- The nitrogen,which is in ammonium in the ammonia sulfite pulping waste liquor of rice straw,is converted into organic nitrogen by using oxide-ammonium decomposition method. 稻草亞硫酸銨法制漿廢液采用氧化氨解的方法,將廢液中的銨態(tài)氮轉化為有機氮。
- The application of organic fertilizer is necessary in supplying the resource of potassium of soils and alleviating the disequilibrium of N,P,K and increasing the use efficiency of organic nitrogen. 證明有機肥是土壤鉀的重要來(lái)源,施用有機肥對于緩解氮磷鉀比例失衡有重要作用;
- Deep oxidation of volatile organic nitrogen pollutants such as N-dimethylformsmide (DMF) and butylamine could be achieved under the catalysis of PCN-1 and PCN-2. The activtiy of the two catalysts were studied. 介紹了兩種催化劑PCN-1,PCN-2型對含氮有機物如N,N-二甲基甲酰胺(DMF)、正丁胺、環(huán)己胺、苯胺、硝基苯等深度氧化的活性及控NO_x能力。
- It is shown from the recent studies that organic nitrogen compounds are an important component of atmospheric nitrogen deposition and make a nonnegligible contribution to the global nitrogen cycling. 摘要近幾年的研究表明,有機氮化合物是大氣氮沉降的重要組成部分,對全球氮循環(huán)的貢獻不可忽視。
- Due to higher content of protein in chondroitin sulfate wastewater and low measured value of ammonia nitrogen, organic nitrogen was neglected in designing wastewater treatment process. 硫酸軟骨素廢水中蛋白質(zhì)含量雖然較高,但氨氮測定值較低,導致有機氮問(wèn)題在設計時(shí)容易被忽視。
- Distribution and fate of nitrogen fertilizer in various soil nitrogen pool at wheat seedling stage 小麥苗期施入氮肥在土壤不同氮庫的分配和去向
- Air consists chiefly of nitrogen. 空氣主要由氮氣組成。