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A GC headspace injection method for the determination of residual organic solvents such as methanol, ethanol, acetonitrile, dichloromethane, ethylacetate, 4 methyl 2 pentanone, toluene, DMF, chloroform and tetrahydrofuran in tazobactam was established.

建立了气相色谱顶空进样法测定三唑巴坦中甲醇、乙醇、乙腈、二氯甲烷、乙酸乙酯、甲基异丁基酮、甲苯、N ,N′-二甲基甲酰胺、氯仿和四氢呋喃等有机溶剂的残留量。

One of these compounds, 2-diethyl- aminoethyl-5--(4-methoxybenzylidene) cyclo- pentanone hydrochloride (T81) possessed sig- nificant antiinflammatory and analgesic ac- tivity when administered orally.

Ⅲ类化合物完全无抗癌活性,对其中一个化合物2-二乙胺乙基-5--(4-甲氧基苯亚甲基)环戊酮盐酸盐(T81)试验结果表明,它经口给药时具有显著的抗炎、镇痛活性。

The electrolyte, which is different from the conventional electrolyte of the ethylene-boric acid system, consists of ethylene, dimethylformamide, ammonium hexandioic and polyhydric alcohol but water.

它是以乙二醇和二甲基甲酰胺为主溶剂,以己二酸铵为溶质,以多元醇为热稳定剂的非水系工作电解液。本文对新型工作电解液和一般工作电解液进行了比较。

Amoung 10 compounds (polyhydroxy substituted N-benzoylserotonin derivatives), compound 4 shows the highest number of ε. The ε of compound 4 is high up to 11.43 × 103㎝-1M-1, which is the 2.84 times of the ε of control group, octyl salicylate. Moreover, compound 4 can absorb all the wavelength if UVB (280 nm - 320 nm), so compound 4 can provide the best protection from UVB. Additionally, this study also discovers that the compound 5 not only can absorb UVB, but also can absorb UVA.

而本研究所合成之多羟基取代N-色洛冬宁苯甲醯胺衍生物(化合物1 ~ 10)莫耳吸收系数最高者为化合物4,其在波长306 nm的莫耳吸收系数达11.43 × 103㎝-1M-1,为对照组水杨酸辛酯的莫耳吸收系数的2.84倍,且化合物4的吸收波长涵遝蒤紖VB波长(280 ~ 320 nm)的范围,故化合物4能提供UVB波长的最佳防护;另外化合物5除了具有UVB波长的吸收外,还具有UVA波长的吸收作用。

In the study of UV absorbing test, polyhydroxy substituted N-benzoylserotonin derivatives (compound 1-10) shows better ability to absorb UV and shows wider range of absorbing UVB than control group, octyl salicylate. With respect to octyl salicylate, octyl salicylate can abosorb the highest wavelength up to 306 nm under UVB (wavelength ranges 280 nm ~320 nm), and the ε is 4.03 × 103 ㎝-1M-1. However, the ε of polyhydroxy substituted N-benzoylserotonin derivatives (compound 1-10) under 306 nm range 4.14 × 103 ~ 11.45 × 103㎝-1M-1. It is reasonable that the compounds in this study can not only absorb the individual wavelength amoung the wavelenght of UVB, but also absorb wider range of wavelength.

在紫外线可见光吸收测试结果显示,相较於对照组水杨酸辛酯在UVB波长(280 ~ 320 nm)范围最大吸收波长为306 nm,其莫耳吸收系数为4.03 × 103 ㎝-1M-1,而多羟基取代之N-色洛冬宁苯甲醯胺衍生物(化合物1 ~ 10)在306 nm的莫耳吸收系数介於4.14 × 103 ~ 11.45 × 103㎝-1M-1,其吸收紫外线的效果皆优於对照组水杨酸辛酯,且其在UVB波长的范围吸收波长的光谱也较宽广,可知每个化合物并非只是对UVB波长范围内的单一波长有吸收度,而是对UVB波长范围具有较宽广的光谱吸收。

The immediate effects of this pharmacologic action are to increase the availability of norepinephrine and serotonin in the synapse and to increase stimulation of the postsynaptic neuron.

药理学活性的瞬即效应是为了提高突触对去甲肾上腺素和 5-羟色胺的利用率,也为了增值突触后神经元的兴奋。

In this paper,pyromellitic dianhydride,1,2,3,4-cyclobutanetetracarboxylic dianhydride,4[(4-aminophenyl)-bis(4-methoxyphenyl)methyl]benzeneamine,4-hexyloxy-biphenyl-3′,5′-diaminobenzoate,and additive ADD-34 were used to synthesize four PIs.

文章用均苯四甲酸二酐,4[(4-氨基苯基)-二(4-甲氧基苯基)甲基]苯胺,1,2,3,4-环丁烷四羧酸二酐,4-己烷氧基联苯酚-3′,5′-二胺基苯甲酸酯和不同含量的添加剂制备了聚酰亚胺液晶取向剂。

Polyamic acidsolution were synthesized from pyromellitic dianhydrideand 4,4"-diaminodiphenylusing solution polycondensation with N,N"-dimethylacetamideas a solvent.

采用均苯四甲酸酐和4,4'-二氨基二苯醚作为单体,合成聚酰亚胺的前驱体聚酰胺酸。

With the in-situ single-stage self-metallization protocol,surface-silvered polyimide film has been prepared using pyromellitic dianhydride/ 4,4\'-oxydianiline-based polyimide as the matrix and (1,1,1-trifluoro-2,4-pentadionato)silveras the silver precursor.

在原位一步自金属化法中,以均苯四甲酸酐/4,4\'-二胺基二苯醚基聚酰亚胺为基体,以三氟乙酰丙酮银作为银的母体制备出了表面金属化的聚酰亚胺银复合薄膜。

The solid-liquid reaction method was used for the preparation of HPLC aryl-bonded silica gel stationary phases, including 3, 5-dinitrobenzyl, quinolinyl ether and 1, 1'-di(2-naphthol) ether bonded silica gel stationary phases by using N-(β-aminoethy1)-γ-aminopropylmethyldimethoxy silane and 3-glyci-doxypropyl trimethoxylsilane as coupling reagents, respectively.

采用固液相连续反应,以N--γ-氨丙基甲基二甲氧基硅烷和γ-丙基三甲氧基硅烷为偶联剂,分别制备了二硝基苯甲酰胺基、喹啉醚基和联萘酚醚基三种芳基键合硅胶固定相。

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The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

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