查询词典 precursor

CuS thin film composed of nano/micro tubes with diameters in the range of 150 to 200 nm and lengths up to several microns and CuO thin film composed of nano/micro crystals with sizes ranging from 150 to 250 nm have been successfully prepared through a gas-solid sulfurization and oxidation reaction using well-aligned CuCl nanorod films as precursor.

在本文中，以由氯化亚铜纳米棒组成的薄膜为前驱体，分别通过气-固相的硫化和氧化反应获得了由直径150到200纳米，长度达数微米的硫化铜管组成的薄膜和粒径为150到200纳米的氧化铜纳米/微米晶所组成的薄膜。

Objective To observed the effect of APP17 peptide (β-Amyloid precursor protein,APP,319～335 peptide sec- tion),on the hippoeampal neuron expression of Insulin receptor,Insulin receptor substrate-1 (IRS-1) in cardiopulmonary re- suscitation rats.

目的观察APP17肽对心肺复苏大鼠海马神经元CA1区胰岛素受体、胰岛素受体底物-1(IRS-1)表达的影响。

On the normotensive rat, bilateral microinjection of L-arginine (16 n mol/0.1 ul/site), a precursor of nitric oxide into the rVLM, caused a decrease in BP, HR and the pressor response induced by the dPAG stimulation, while microinjection of NG-methyl-Larginine (L-NMMA, 16 n mol/0.1 ul/site), a blockade for NO to form, into the rVLM bilaterally, caused an increase in BP, HR and the pressor response induced by the dPAG stimulation. There was no effect of both drugs mentioned above on the tachycardiac response induced by the dPAG stimulation.

五、在正常血压大鼠，于双侧rVLM微量注射一氧化氮前体(16nmol/0.1μl/site)可引起BP降低、HR减慢、以及电刺激dPAG诱发的防御性升压反应减弱；而于同区微量注射生成一氧化氮的拮抗剂N〓-甲基-L-精氨酸(16nmol/0.1μl/site)则可引起BP升高、HR加快、以及电刺激dPAG诱发的防御性升压反应增强；而上述两药对电刺激dPAG诱发的防御性加快心率反应均无明显作用。

Finally, the construction of a tetracyclic core of the target molecule was achieved by oxidation of the furan ring and intramolecular Michael addition. The total synthesis of 8-demethyl-pallavicinin B will be completed after two or three more operations starting from a pivotal precursor.

在构建目标分子骨架结构的研究中，成功的运用过酸氧化呋喃环-分子内Michael加成策略构建了四环体系，再经过两到三步的转化即将可以完成8-去甲基-pallavicinin B的全合成。

MgO nanowires were synthesized at a lower temperature (600℃) by pulsed liquid injection MOCVD with β–diketonate Mg2 magnesium bis (2,2,6,6–tetramethyl- 3,5-heptanedionate, with formula Mg(C11H19O2)2 as precursor.

使用脉冲液滴注入式MOCVD，将Mg2（即：双（2，2，6，6，-四甲基-3，5-庚二酮酸）镁，其分子式是Mg(C11H19O2)2 ）作为反应前驱体，在较低温度下（600℃）合成MgO纳米线。

Here we synthesize mesoporous titanosilicate MTS-9 and ferrisilicate MFS-9 by using zeolite TS-1 and FeS-1 seed solution as inorganic precursor respectively and triblock copolymer surfactant as template.

我们分别使用TS-1和FeS-1导向剂为无机原料，以三嵌段共聚化合物表面活性剂为模板，合成了钛硅介孔分子筛MTS-9和铁硅介孔分子筛MFS-9。

Here we synthesize mesoporous aluminosilicate MAS-7 and MAS-9 and titanosilicate MTS-9 by using Beta, ZSM-5 and TS-1zeolite seed solution as inorganic precursor respectively and triblock copolymer surfactant as template.

我们分别使用Beta ，ZSM-5和TS-1导向剂为无机原料，以三嵌段共聚化合物表面活性剂为模板，合成了硅铝介孔分子筛MAS-7和MAS-9，钛硅介孔分子筛MTS-9。

Using titanyl sulfate as the TiO_2 source,the experiments for synthesizing TiO_2 nanoparticles were carried out by detonating the mixed explosives composed of the TiO_2 precursor,ammonium nitrate(NH_4NO_3)and cyclortrimethylenetrinitramine,the structures and properties of the as-prepared TiO_2 nanoparticles were also characterized, meanwhile in combination with detonation theory and experimental measurement,detonation parameters,such as detonation heat,detonation temperature were calculated,and detonation velocity was also measured.

以硫酸氧钛为钛源，引爆由氧化钛前驱体、硝酸铵和黑索金组成的混合炸药，进行爆轰合成氧化钛纳米粉的实验研究，对纳米氧化钛的结构和性质进行表征；结合爆轰理论计算和实验测量得到爆热、爆温和爆速等爆轰参数。

The barium-strontium titanyl oxalate precursor powder was prepared successfully by using the simple oxalate chemical coprecipitation method. The pyrolysis of BSTO at 905℃ in air produced barium-strontium titanate powder. BST powder was characterized with SEM, TEM, XRD and FT-IR, which revealed that the powder was spherical, highly pure, perovskite, and the average particle diameter was 36nm.

采用草酸盐化学共沉淀法制备了草酸氧钛锶钡前驱体，通过905℃高温煅烧，制得了高纯纳米钛酸锶钡，并利用SEM、TEM、FT-IR和XRD对其进行了表征；并将该粉体应用于水中重金属镉离子的吸附。

The nitrides with high specific surface area from oxide precursor can be prepared through temperature-programmed reduction via topotactic reaction in ammonia or nitrogen under strict reduction conditions.

在基本不破坏氧化物前驱体晶体结构和严格的氮化条件下，氧化物前驱体通过程序升温氮化经由&局部规整反应&可以制备出高表面积的过渡金属氮化物。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。