一种称为neonicotinoids的新烟碱类杀虫剂导致世界各地的蜜蜂大范围死亡。
Pesticides called neonicotinoids are widely implicated in the deaths of honeybees across the world.
土豆，作为美国最喜爱的白色蔬菜，是维生素c、钾、维生素b6、烟碱酸和硫铵的一个很好来源。
America's favorite white vegetable, the potato, is an excellent source of vitamin c, potassium, vitamin B6, niacin and thiamin.
吸烟之所以危害健康是因为烟草中含有多种损害健康的化学物质，包括60来种致癌物质、烟碱、砷、一氧化碳和尼古丁。
Tobacco smoke is hazardous because it contains a number of unhealthy chemicals, including some 60 carcinogens (cancer-causing agents), tar, arsenic, carbon monoxide and nicotine.
美国和欧洲的环保人士称，新烟碱类杀虫剂正造成蜜蜂数量下降。
Environmentalists in the United States and Europe say chemicals called neonicotinoids are causing a drop in the number of bees.
吡虫啉为新型氯代烟碱类杀虫剂。
这些尼古丁替代品中的烟碱含量足以刺激心脏。
The amount of nicotine in these nicotine substitutes can be enough to excite the heart.
为微生物降烟碱的研究及应用提供了理论依据。
This study lays the foundation for the application of nicotine biodegradation.
本发明涉及新型烟碱类杀虫剂烯啶虫胺的组合物。
The invention relates to a composition of novel nicotinamide insecticide nitenpyram.
②振荡提取对活性炭滤嘴中吸附的烟碱量萃取不完全；
Shaking was not sufficient for nicotine extraction in charcoal filter.
终产品的烟碱纯度可达98.8%，达到医药级产品的要求。
The purity of nicotine in final product was 98.8%, reaching the requirement of medication product.
结论黄芪在一定程度上能保护HUVEC细胞免受烟碱损害。
Conclusion Astragalus can protect HUVEC against nicotine to some extent.
结论：膜片钳技术使探讨烟碱受体拮抗药的作用位点成为可能。
CONCLUSION: the patch clamp technique makes it possible to observe the action sites of nicotine receptor antagonists.
烟草发状根培养中，激素对发状根生长和烟碱合成有较大影响。
Phytohormones affected obviously the growth and nicotine content of the hairy root.
还原糖含量略有提高，烟碱含量降低显著，对多酚含量影响较小。
Reducing sugar was improved slightly, nicotine content was reduced remarkably and polyphenolic content was affected slightly.
实验证明从废次烟叶中同时提取茄尼醇和烟碱的方法，是可行的。
The method of the simultaneous extraction of nicotine and solanesol from the discard is introduced in this text. It was testified to be feasible.
新烟碱类杀虫剂是取代高毒有机磷、有机氯类杀虫剂的最佳品种。
The novel nicotinamide insecticide is the optimal variety to replace highly-poisonous organophosphorus and organochlorine insecticides.
研究了室温条件下结构相似的烟酸和烟酰胺以及烟碱的太赫兹光谱。
The terahertz (THz) spectra of nicotinic acid, nicotinamide and nicotine were studied at room temperature. The time-domain THz spectra were measured.
轻症或可疑为烟碱酸缺乏症者只用均衡饮食治疗即可收到满意效果。
Mild cases of niacin deficiency respond to a well-balanced diet alone.
通过田间试验，研究了不同施氮量对晒烟烟叶产量和烟碱含量的影响。
The field trials were done to study on the effects of nitrogen amount on the yield and nicotine content of sun-cured tobacco.
考察了浸提液的碱浓度、浸提温度和蒸馏加盐量对烟碱提取率的影响。
The effects of the concentration of sodium hydroxide solution, immersing temperature and the amount of salt added during distillation on the yield of nicotine were examined.
根系中果糖含量增加比较显著，且与根系中烟碱含量的增加趋势相同。
The fructose content increased remarkably in root system, whose increase tendency is same as nicotine content in root system.
研究了菌株DN2降解烟碱的特性和对烟草废弃物中烟碱的降解情况。
The kinetics of nicotine degradation by O. intermedium DN2 and its application in tobacco waste were investigated.
测定了河南烤烟(40级)各等级烟叶的烟碱含量和烟气烟碱传输量。
The content of tobacco leaf nicotine and smoking nicotine of40 grades leaves of he nan flue - cured tobacco is determined.
另外，非去极化肌松药还可以改变烟碱样受体的类脂膜，改变其离子通道。
In addition, non depolarizing neuromuscular blocking drugs may alter the lipid membrane around the nicotinic cholinergic receptors, changing the properties of the ion channel.
并以溶剂萃取法对烟碱粗制品纯化，以烟碱和软脂酸的成盐反应精制烟碱。
The unrefined nicotine was purified using solvent extraction and the nicotine was refined by a salification reaction of nicotine and palmitic acid.
本文论述了利用流体静力学原理对硫酸烟碱的提取工序进行工艺改造的方法。
The method of using hydrostatic principle to improve technology for extracting nicotine sulfate was described .
考察了粒度对烟末总糖、总氮和烟碱含量近红外(N IR)预测值的影响。
The effects of particle sizes of tobacco fines on the estimated values of total sugar, total nitrogen and nicotine contents with NIR were studied.
重点讨论了夹带剂在超临界萃取烟草中烟碱、茄尼醇、精油等有效成分中的应用。
It is emphatically discussed that the entrainer is applied for supercritical fluid extraction (SFE) of available components in tobacco, such as nicotine, solanesol and ethereal oil.
神经元烟碱受体广泛地分布于中枢神经系统并参与脑内信号传导系统的调节过程。
Neuronal nicotinic acetylcholine receptors (nAChRs) are widely distributed in the central nervous system, and they participate in complex neuronal signal transduction and regulation in the brain.
神经元烟碱受体广泛地分布于中枢神经系统并参与脑内信号传导系统的调节过程。
Neuronal nicotinic acetylcholine receptors (nAChRs) are widely distributed in the central nervous system, and they participate in complex neuronal signal transduction and regulation in the brain.
应用推荐