查询词典 nitrate

Revealed that nitrate reductase is differentially expressed in arbuscular mycorrhizas of maize and concluded that NO 3 – may be transferred from fungus to plant.

显示，硝酸盐还原酶的差异表达丛枝菌根玉米，结果显示：NO 3 -可转菌类植物。

The separation of tocopherols and tocotrienols by using the method of adsorption chromatography on silica and on silica impregnated with silver nitrate have been discussed. Satisfactory separation could be obtained with argentation column chromatography by eluting batchwise with n-hexane containing increasing amounts of diethyl ether. More than 90% of vitamin E amount in eluate was tocotrienols.

以乙醚正己烷混合溶液为淋洗液，探讨了硅胶柱层析和硝酸银硅胶柱层析分离生育三烯酚和生育酚的效果，结果表明：通过改变淋洗液中乙醚含量可以将生育酚和生育三烯酚大部分分离：硝酸银硅胶柱层析分离生育三烯酚和生育酚的效果明显高于硅胶柱层析，其洗脱液中生育三烯酚可占V〓总量的90％以上，最高达98.47％。

Nitrate reducing strains were isolated using dilute soil suspension spread plate techniques from soil that sampled from the rhizosphere of Arundo donax L..

采用稀释土壤悬液-涂布平板法从芦竹根际土壤中分离出22株具有硝酸盐还原能力的细菌，从中筛选出一株产气快、脱氮率高的反硝化细菌LZ14。

L1 (near-ambient) or 100 lL ? L1 CO2. Transcripts of the principal Ci and NO3 assimilatory genes RUBISCO LSU and nitrate reductase displayed very strong diel oscillations with peaks at the end of the scotophase.

Ci 和NO3-同化基因的转录本RUBISCO LSU和硝酸盐还原酶显示出非常强烈的昼夜节律的波动，并在夜间末期达到最大值。

In comparison with the reported corresponding sequences, the putative amino acid sequence shares high homology with assimilatory nitrate reductase of other microalgae, with identity 78% to Dunaliella tertiolecta, 60% to Volvox carteri, 58% to Chlamydomonas reinhardtii, and 50% to Chlorella vulgaris, respectively.

2.3 杜氏盐藻NR基因原核表达载体在大肠杆菌中的表达和功能鉴定(1)pMAL-NR-2组大肠杆菌SDS-PAGE结果显示：在140kDa左右出现一条特异性条带，分子量与MBP-NR融合蛋白相符（BMP+NR=42.5kDa+99.5kDa=142kDa），在IPTG（0.15mmol/L）37℃诱导时，该蛋白量占全菌蛋白的21.06％；对照组无此特异带。

Basial nitrogen fertilizer of traditional treatment can beget leaching loss of soil nitrate before top-dressing, but top-dressing beget hardly the leaching loss because cotton assimilated large numbers of nitrogen for accelerated growing.

传统处理施肥量高，基肥比例大易引起土壤硝态氮的淋移损失，损失数量与棉花生育时期有关，棉花生育期追氮由于棉花对氮素的大量吸收，硝态氮淋移损失相对较小。

These results suggested that the stimulation effect of local nitrate on LR growth is dependent on auxin. And the auxin mainly comes from the basipetal transport from shoot to roots, but not from the seed or the basipetal transport of auxin from root tip to LR growth sites.

这些结果表明，局部供应硝酸盐对侧根生长的促进作用依赖于生长素，这些生长素主要来源于地上部生长素向侧根生长部位的直接供应，而不是来源于种子或由根尖向侧根发生部位的生长素向基运输。

Domestic products raw material, which bastnasite was used as active component for DeSOx additives, were selected to use for the first time, the bastnasite can replace industrial cerium nitrate, it may improve DeSOx activity and abrasive resistance, due to admission bastnasite, but also reduce cost of material of DeSOx additives.

本文采用三种方法拟在活性组分的选择、活性评价及作用机理等方面对DeSOx添加剂强度进行有益的探索；尤其首次选用国产原料——氟碳铈矿作为镁铝尖晶石DeSOx添加剂的活性载体，使得氟炭铈矿可以代替工业硝酸铈，它既可提高脱硫添加剂的活性和耐磨强度，还可以降低原料成本。

The effects of solvent on the bromization reaction and oxidant on the formolation reaction of the target product were studied. The results show that the optimum solvent for the bromization reaction and the optimum oxidant for the formolation reaction of the target product were carbon tetrachloride and ceric ammonium nitrate, and their yields were 86.7% and 89.3% respectively.

同时就溴化反应中的溶剂以及甲酰化反应中的氧化剂对两类反应的影响分别进行了研究，结果表明溴化反应的最佳溶剂为四氯化碳，反应产率达到86.7%，甲酰化反应的最佳氧化剂为硝酸铈铵，产率达到89.3%。

A bacterial strain ADZ1 that demonstrated higher efficient in the aerobic denitrification was isolated from the sewage of urban rivers on the selective medium, Bromothymol Blue, after enriched in the shaking flasks. The reduction efficiency for nitrate and the total nitrogen reached 93.1% and 34.7% within 48 hours respectively. Sequence of 16S rRNA suggested that strain ADZ1 belongs to the genus of Pseudamonas, and further was identified as Pseudomonas putida by VITE K?

采用富集培养和BTB平板法从城市河道污水中筛选、分离获得了一株高效的好氧反硝化菌株ADZ1， 48 h内对硝酸盐的降解率为93.1%，总氮的去除率为34.7%。16S rRNA测序及系统发育分析结果表明该菌株属于Pseudamonas sp。，经VITEK？

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。