查询词典 n-tetracosane

Nonlinear optical organic materials have more advantages than inorganic materials. Based on the molecule design, a new D-π-A structure NLO chromophore molecule [4-nitro-4'-N,N-di aminoazobenzene] 3 with nitro, azobenzene and epoxy is synthesized.

以环氧氯丙烷、苯胺、对硝基偶氮苯胺为原料，设计并合成了一种具有推拉电子结构、含双环氧基的偶氮类有机非线性光学发色团分子4-硝基－4'-N，N-二缩水甘油氨基偶氮苯。

Polyimide/nano carborundum composite films were made from pyromellitic dianhydride、4, 4'-aminodiphenyl ether、N, N'-dimethyl acetamide and nanometer carborundum.

以均苯四甲酸二酐、4，4'-二氨基二苯醚、N，N'-二甲基乙酰胺为原料，经化学合成反应制备了聚酰亚胺／纳米碳化硅复合薄膜。

64 proven stable exertional anginal patients were randomly divided into group A (n=32) and group B (n=32). The conventional treatments were given to each group, and at the same time TMZ (20 mg Tid )was added to group B.

64例稳定性劳力型心绞痛患者随机分为A组(n=32)及B组(n=32)： A组为常规药物治疗； B组为常规药物治疗基础上，加用曲美他嗪20mg每日3次，治疗12周。

The PA2 value for α blocking were 7.46±0.20 (n=8) in rat anococcygeal muscles and 7.11±0.27 (n=8) for β blocking in guinea pig atrium.

阻断α1受体的PA2为7.46±0.20(n=8)；阻断β1受体的PA2值为7.11±0.27(n=8)。

Quinazolin-4(3H)-ones(1) were conveniently synthesized from anthranilic acids and amidines,which could be chloridized with POCl_3 to obtain 4-chloroquinazolines (2).The reaction of 2 and 1H-pyrazol-3-amine would give two types of products.In the presence of acid or base,the C-N bond would be formed between the 4-position carbon of 2 and the NH_2 of 1H-pyrazol-3-amine.While the C-N bond between the 4-position carbon of 2 and the NH of 1H-pyrazol-3-amine would be formed when Pd catalyst was utilized.

以邻氨基苯甲酸类化合物和脒为原料，可方便地获得喹唑啉-4(3H)-酮类产物(1)，1经POCl_3氯化可到4-氯代喹唑啉化合物(2)。2与3-氨基-1H-吡唑化合物反应可得到两种类型的产物，在酸、碱条件下2的4位碳和3-氨基-1H-吡唑化合物的NH_2发生C-N成键反应；在Pd催化条件下，2的4位碳则和3-氨基-1H-吡唑化合物的环内NH发生C-N成键反应。

Patients were randomly assigned either dexamethasone (n=24) or placebo (n=19) and receied 9 months of treatment with standard first-line antituberculosis drugs.

患者被随机分成两组，一组给予地塞米松(n=24)，一组给予安慰剂(n=19)，同时接受9个月的一线标准抗结核药治疗。

Methods:48 patients with liver cirrhosis and portal hypertension who received portal azygous disconnection and splenectomy were randomly assigned 2 groups,group control (n=24) and group therapy (n=24),except normal therapy,the patients of 2 group were separately cured by hypodermic injection of rhGH(8u,group therapy) and normal saline (2ml,control group) at second day for 7 days after operation.

48例肝硬化门脉高压已行门奇静脉断流和脾切除术患者术后随机分为治疗组（n=24）及对照组（n=24），两组术后除常规治疗外，于术后第2天每天分别皮下注射rhGH和生理盐水2ml，连续注射7d。

Methods:48 patients with liver cirrhosis and portal hypertension who received portal azygous disconnection and splenectomy were randomly assigned 2 groups,group control (n=24) and group therapy (n=24),except normal therapy,the patients of 2 group were separately cured by hypodermic injection of rhGH(8u,group therapy) and normal saline (2ml,control group) at second day for 7 days after operation.

公文大全免费帮您找文章，进入目的：探讨人重组生长激素对肝硬化门脉高压患者术后早期免疫功能的影响。方法：48例肝硬化门脉高压已行门奇静脉断流和脾切除术患者术后随机分为治疗组（n=24）及对照组（n=24），两组术后除常规治疗外，于术后第2天每天分别皮下注射rhGH和生理盐水2ml，连续注射7d。

Benzoperoxide/N,N-dimethylaniline initiator system that can eliminate the danger of using MEKPO/Co salt system used in UPR at room temperature was studied in this paper.

采用过氧化苯甲酰/N，N-二甲基苯胺固化体系室温条件下对不饱和聚酯树脂进行固化，可以降低常用的过氧化酮/钴盐体系的危险性。

The ultraviolet-visible absorption spectra, optical constants (complex refractive index N=n+ik) of the thin films and thermal characterizations of three kinds of novel nickel-azo dyes based on 4-methylthiazole, benzothiazole and 6-methylbenzothiazole were investigated.

分别对三种以 4 甲基噻唑、苯并噻唑和 6 甲基苯并噻唑作为重氮组份，以 3 二乙氨基苯酚作为偶合组份的偶氮染料的镍螯合物的光谱、热学性质和薄膜的光学常数(复折射率N =n+ik)及光存储性能进行了研究。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。