查询词典 nicotine

Investigation of nicotine-degrading bacterial resources not only has basilic scientific significance, but also lays an experimental foundation for exploitation of new nicotine-degrading bacterial agents and owning the independent intellectual property rights.

论文对尼古丁微生物降解资源的调查研究不但具有重要的科学意义，还将为开发新的降解菌株，获得自主知识产权奠定基础。

The nicotine stain on one's fingers can be eradicated by a file or some other means, but the nicotine deposit can hardly be removed from one's lungs except by giving up smoking and by other treatment.

手指上的尼古丁可以采取一些办法来去掉，但是在肺部的尼古丁却不是那么地容易去掉，除非采取戒烟或通过其它医疗手段。

In the proton NMR spectra of nicotine, all proton peaks of nicotine moved to downfield, the resonance emanating from nicotine preferentially broadened.

尼古丁与两种蛋白相互作用，改变了尼古丁的化学位移，并使得〓H NMR峰的分辨率降低，峰变宽。尼古丁诱导蛋白质的二级结构改变，血红蛋白α螺旋结构减少，并出现一个新的子峰；白蛋白的α螺旋也减少。

The results indicated that the degradation process of nicotine with no-induced strain DN2 followed inverse S-shaped curve, and degradation process of nicotine with induced cells of DN2 followed Eckenfelder mode. The half life of nicotine degradation was 17.43 h and 4.10 h, respectively.

结果表明，未经烟碱诱导的降解曲线呈倒S曲线，半衰期为17.43 h；经烟碱诱导的降解曲线符合Eckenfelder动力学模型，半衰期为4.10 h。

Results:①In normal extracellular solution, the non-selective cholinergic agonist acetylcholine and the muscarinic agonist muscarine both caused the increace of [Ca2+]i in separately 21 out of 25 and 14 out of 18 VHCs I, while only 3 out of 20 and 2 out of 16 VHCs I had a weak increase of [Ca2+]i if investigated in calcium free extracellular solution; nicotine could increase the [Ca2+]i in 7 out of 32 VHCsⅠonly at enough high concentration(up to 10 mmol/L) in normal extracellular solution, this [Ca~(2+)]_i increase by nicotine at high concentration could not be investigated if at calcium free solution.

结果①非选择性胆碱能受体激动剂乙酰胆碱、M型胆碱能受体激动剂毒蕈碱在正常细胞外液中均可引起大部分(21/25， 14/18)单离VHCⅠ[Ca~(2+)]_i的升高，但无钙外液中ACh、muscarine仅使少部分(3/20，2/16)VHCⅠ[Ca~(2+)]_i升高且作用减弱；正常外液中，N型受体激动剂尼古丁仅在高浓度(≥10 mmol/L)时引起部分(7/32) VHCⅠ[Ca~(2+)]_i升高，在低浓度时对胞内钙离子浓度影响不明显，无钙外液中，10 mmol/L nicotine对胞内钙离子浓度影响不明显。

To explore the influence on the expression of orexin A in the hypothalamus and orexin type 1 receptor (OX1R) in the medulla of neonatal rats after prenatal nicotine exposure, the 20 pregnant rats were divided into 2 groups randomly. Either nicotine (6 mg/kg per day) or normal saline solution (as same volume as nicotine group) was administered into the pregnant rats hypodermically from the fifth day to the end of gestation.

为了观察出生前尼古丁暴露对新生大鼠下丘脑orexin A及延髓内orexin 1型受体（OX1R）表达的影响，本实验将20只雌性成年大鼠随机均分为二组，怀孕后第5 d开始每天分别皮下注射尼古丁6 mg/kg或等量的生理盐水，直至分娩。

A series of PVC membrane electrodes with nicotine containing different plasticizeres such as octyl phthalate, nonyl phthalate and di octyl dicaproate, and electric active substances such as association of nicotine-tetraphenyl borane, nicotine-silicotungstic acid, nicotine-phospho-wolframic acid and nicotine-Reineckate ammonium were prepared.

以尼古丁为研究对象，研制了一系列含有不同增塑剂(苯二甲酸二辛酯、苯二甲酸二壬酯和癸二酸二辛酯)和电活性物质(尼古丁四苯硼缔合物、尼古丁硅钨酸缔合物、尼古丁磷钨酸缔合物和尼古丁雷氏盐缔合物)的PVC膜电极。

The susceptibilities of the 3th instar larvae of Spodoptera litura fed on diets treated with nicotine and rutin to AucaNPV, fipronil and spinosad were studied. The activities of CarE and GSTs in different treated cutworms were also tested. The results showed that the nicotine enhanced significantly the susceptibility of Spodoptera litura to insecticides, and the susceptibility enhanced as the nicotine concentration in the diets increased.

以在人工饲料中添加植物次生物质的方法，研究了取食不同含量烟碱、芸香苷的斜纹夜蛾Spodoptera litura 3龄幼虫对银纹夜蛾核多角体病毒、氟虫腈及多杀菌素的敏感性，同时测定了各处理组幼虫体内羧酸酯酶和谷胱甘肽转移酶的活性。

Many products, such as nicotine gum, nicotine sprays, or nicotine inhalers, may be helpful to people trying to quit smoking.

许多产品，如尼古丁口香糖、尼古丁喷剂，或尼古丁吸入器，可以帮助人们尝试戒烟。

It is conducive to uptake soil nitrogen for flue-tobacco on dryland soil with maize-tobacco rotation before topping (60 days after transplanting) and uptake soil nitrogen for flue-tobacco on paddy soil with rice-tobacco rotation after topping.2 The nitrogen utilization efficiency of rapeseed cake, rice straw and rape straw were 19.5%, 15.5%, 8.1% respectively, and the inorganic fertilizer nitrogen utilization efficiency were 41.1%, 42.7% and 35.7% under the combined application of organic additives and inorganic nitrogen fertilizer. The contribution rate of rapeseed cake, rice straw, rape straw to accumulated nitrogen of flue-cured tobacco were 1.0%, 2.4%, 2.7% respectively by the combined application of organic additives and nitrogen fertilizer. Flue-cured tobacco for organic nitrogen absorption meet with the nitrogen needs laws of high-quality tobacco, indicating that the combined application organic additives and inorganic nitrogen fertilizer reduces the nicotine content of tobacco, an increase of sugar/nicotine ratio and improved the quality of tobacco. In which the role of rice and rape straw is greater than the rapeseed cake can be used as measures to lower nicotine.3 Nitrogen accumulation in flue-cured tobacco with the total nitrogen input was a significant positive correlation during the growth stage of flue-cured tobacco. The total nitrogen input for the 156.3-405.5kg.hm-2, in which the soil nitrogen mineralization capacity account for 22.6%-54.3%, with an average of 34.5%, that is, soil nitrogen mineralization accounted for 1/3 of the total nitrogen input.

旱地轮作土壤有利于烤烟生长前期对土壤氮素的吸收，水旱轮作土壤增加了烤烟生长后期对土壤氮的吸收。2在有机添加物与无机氮肥配施条件下，烤烟对有机添加物中氮的吸收规律基本符合优质烟的需氮规律，其中烤烟对菜籽饼肥、稻草秸秆、油菜秸秆所含氮素的利用率分别为19.5%、15.5%、8.1%，所配施无机氮肥的利用率分别为41.1%、42.7%和35.7%，菜籽饼肥、稻草秸秆、油菜秸秆对烤烟氮素累积量的贡献分别为1.0%、2.4%、2.7%。3不同轮作方式及添加有机物条件下氮素平衡结果显示，烤烟生长期间的氮输入总量为156.3-405.5kg.hm-2，其中矿化氮量为输入总氮量的22.6%-54.3%，平均为34.5%，约为输入总氮量的1/3；肥料氮的利用率为31.4%-42.7%；植烟土壤氮素表观损失率在37.5%-57.2%，平均为46.9%，约为输入总氮量的一半。

It is also known as one of the most poisonous naturally occurring substances.

它也被称为一个最自然发生的有毒物质。

The greatest stress is found at the location on the cross section where V is the largest.

最大应力出现在横截面上V为最大的地方。