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Objective To investigate the effect of remifentanil combined with propofol in totally intravenous anesthesia on children undergoing tonsillectomy.

目的 探讨瑞芬太尼、丙泊全凭静脉麻醉与芬太尼、丙泊和异氟烷静吸复合麻醉在小儿扁桃体摘除术中应用的比较。

The results showed that the phenolics in cranberry would reduced. The free quercetin showed the best stability. And the flavonoids and proanthocyanidins were the second. The total phenolics showed the worst stability.

结果显示,蔓越莓中的类化合物含量会随储存时间而下降,其中以游离态quercetin之安定性最佳,总类黄酮及前花青素则其次,在总类化合物之安定性最差。

Both IS and NA increased heart rate, while propranolol (Pro, 25#mu#g per min) produced a decrease. Phentolamine (Phen, 25#mu#gper min) had no effect. All these effects were similar in vagotomized as well as in unoperated rats. It was shown that the reversal of the effect of sympathetic nervous system on gastric acid secretion is not due to changes in circulation.

IS和NA增加大鼠心率,心得安(25μg/min)显著地减少它,而妥拉明(25ug/min)没有明显的作用;IS, NA、心得安或妥拉明对迷走神经完整、VT即刻和三月后的大鼠心率的影响均无差异,表明VT后交感神经系统调节胃酸分泌的作用吃变化并非循环改变的结果。

The kinetic and thermodynamic characteristics of adsorption of urushiol resin were systematically studied for tea -polyphenols.

研究了漆树脂吸附茶多的动力学和热力学特性。

The result shows that catalyst concentration, reaction time, urushiol concentration and temperatures affect the polymer yield in oxypolymerization of urushiol system.

讨论了该配合物作为催化剂,催化漆氧化聚合反应时,催化剂浓度、时间、底物浓度以及温度对漆氧化聚合反应的影响。

Rational reaction condition is that ratio of the Cu(superscript 2+) schiff base complex of disproportionated rosin amine is 3%, urushiol concentration is 68.8 g/L, the system of reaction reacts 36 h at 30℃ in alcohol dissolvent.

结果表明,氧化聚合反应的理想条件是以乙醇为溶剂,加入3%歧化松香胺席夫碱-铜配合物催化剂,漆浓度为0.0688g/ml,在30℃下反应36h后,漆聚合物的沉淀得率为51.3%。

Urushiol -based epoxy acrylate was prepared from urushiol, epichlorohydrin and acrylic acid.

以漆、环氧氯丙烷、丙烯酸为主要原料,通过两步反应合成了漆基环氧丙烯酸酯,其结构经IR表征。

In China,natural lacquer has been studied for a long time.Because to separate natural homologous is very difficult,it is almostimpossible to obtain a great deal of pure sample.So the structure ofmain constitute of Chinese lacquer urushiol has not an identicalresult due to the incomplete structural data. The urushiol diacetate derived from urushiol have beensuccessfully separated using centrifugal rotational TLC withpreparative silica get thin layer coated silver nitrate.

天然漆的研究,在我国有较长的历史,漆组分及结构做过一些工作,但由于天然同系物之间分离的困难,不易大量得到纯的样品,只能通过零星结构数据推断结构,致使中国生漆漆主要组分的结构没有一致的认识与确切的结论。

In this paper, urushiol-Titanium chelate polymer was synthesized through tetrabutyl titanate reacting with the product which is from polymerization between urushiol and formaldehyde, which endows urushiol and Titanium atom with macromolecular performance and functional performance, respectively.

根据其结构特点,本研究利用漆先后与甲醛和钛酸丁酯聚合形成高聚物,使得漆高分子功能化、钛原子高分子化。

We are satisfied that thefive main components were pure and plenty enough for NMR study. The structure and configuration of key component of urushiol weresuccessfully determined by using 〓 and 〓 conventioanl method,DEPTtechnique,homo- and heteronuclear chemical shift correlation 2D-NMR,2D-J resolved NMR,heteronuclear relayed coherence transfer 2D-NMR,and relaxation time measurement.The assignment of resonances for 〓and 〓 were confirmed.

对中国生漆含量最大的关键漆组分,在〓常规NMR谱和DEPT编辑谱的基础上,采用同核及异核化学位移相关二维谱,同核J分辨谱和异核中继相干传递二维谱等2D—NMR方法,并结合弛豫时间〓测定技术等,完全确定了占中国生漆总量60%左右的有两双键共轭的三烯漆的结构与构型。

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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。

There is no differences of cell proliferation vitality between labeled and unlabeled NSCs.

双标记神经干细胞的增殖、分化活力与未标记神经干细胞相比无改变。