the periodic solution of nonlinear differential equation with real coefficient negative definite matrix

the kinetics and mechanism of solvent extraction of iron(ⅲ) with a n-octane solution of 2-ethylhexyl phosphonic acid mono 2-ethylhexyl ester ( hehehp, ha) has been studied at ionic strength 0.1 and 298 ± 1k by means of the high-speed stirring method.

298±1K下用高速搅拌池法考察了2-乙基己基膦酸单2-乙基己基酯（HEHEHP）-正辛烷溶液从0.100mol·dm~（-3）硝酸盐水相中萃取Fe（Ⅲ）的动力学。

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the complex way and intrinsic activity of peg were greatly influenced by its concentration. in the solvent of xylene and n-octane, the catalytic activity of peg immobilized on the polymer was increased and had a maximum value at the ring-substitution of 15%.

结果表明，PEG浓度对其本征反应性有很大影响，PEG固载后其催化活性升高并在环取代率为15%时有一极大值。

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the determinations obtained with different amount of n-octane added to vary the foam stability show that a good linear relationship exists between the foam stability factor and the interfacial elasticity modulus, e, or the foam deformability, for n2/ bs-12 foam.

加入不同量正辛烷改变N2气/BS-12泡沫的稳定性，求得泡沫稳定系数与界面弹性模量E（即泡沫变形能力）之间有良好的线性关系。图11参8。

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experimental results in the simulated system of n-octane/ n-heptane/ isoamyl alcohol indicate that steam distillation could extract components of lower boiling point or higher polarity in preference, so it is possible to be applied for the cutting and purification of lavender oil.

针对正辛烷/正庚烷/异戊醇模拟体系的水蒸气蒸馏实验表明，水蒸气蒸馏能优先提取混合物中低沸点、强极性组分，可用于薰衣草油的精制和切割。

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( 1) gd_2o_3: tb~ ( 3+) luminescent nanoparticles were prepared in the reverse microemulsions based on triton x-100/ n-hexyl alcohol, n-octane, and water.

通过滴定作出TX&100/正己醇/正辛烷/水的部分拟三元相图，在W/O型微乳液的纳米反应器中合成了纳米Gd2O3：Tb~（3+）荧光粉，结构表征证实其为立方氧化钆。

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at high pressure, the density and viscosity for pure substances of the n-pentane, cyclohexane, n-octane, isooctane, benzene and ethylbenzene were measured by vibrating-wire viscometer in different temperature range.

在高压下利用高温高压振动丝密度粘度仪测定了正戊烷、环已烷、正辛烷、异辛烷、苯、乙苯在不同温度范围内的密度和粘度。

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the distillation-desorption experiments of n-hexane, n-heptane and n-octane from 0.5 nm molecular sieve are carried out at 433,453 and 473 k, respectively.

在433、453和473K下进行了正己烷、正庚烷和正辛烷从0.5nm分子筛上蒸馏脱附实验。

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but for the zeolite based catalysts basic nitrogen compound should be added to the n-octane feed and a lower reaction temperature is required in order to suppress its high cracking activity.

含分子筛催化剂则用较低的反应温度并在正辛烷中加入一定量的碱性氮化物，以便抑制催化剂过高的裂解活性。

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hydrogenation-dehydrogenation and acidic functions of hydrocracking catalysts were characterized by the use of model compounds of toluene and n-octane in a microreactor.

本文报导了在微型反应器中用模型化合物甲苯及正辛烷表征催化剂的加氢-脱氢及加氢裂解功能的方法。

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an n-octane/ stainless steel heat pipe blackbody has been developed with maximum cavity diameter of 60 mm arid working temperature range from 50 ℃ to 200 ℃.

研制了正辛烷/不锈钢热管式黑体辐射源。该源最大口径φ60mm，工作温度为（50～200）℃。

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desorption of thiophene, benzene and n-octane on nay and cey zeolites

噻吩、苯和正辛烷在NaY和CeY分子筛上的热脱附

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the main contents of this paper are as follows: 1. effects of channel structure and acidity of molecular sieves on hydroisomerization of n-octane.

本论文考察代表不同孔道结构、酸性强度的分子筛上正辛烷异构化性能，确定可以用于长链正构烷烃异构化分子筛的特点。

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study of cross-linked smectite for hydroisomerization of n-octane

交联蒙脱土用于正辛烷异构化的研究

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selective adsorption of thiophene, benzene and n-octane on y zeolites

噻吩、苯和正辛烷在Y型分子筛上的选择性吸附

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catalytic performance of co/ wo_3/ zro_2 catalyst in n-octane hydroisomerization

Co/WO3/ZrO2催化正辛烷临氢异构化反应性能

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studies of the microemulsion of the gemini surfactant/ alcohol/ n-octane/ brine system

Gemini表面活性剂/醇/正辛烷/盐水体系微乳液的研究

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an n-octane/ stainless steel heat pipe blackbody

正辛烷/不锈钢热管式黑体源

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research of n-octane isomerization over tungsten based catalysts

钨基催化剂上正辛烷异构化反应性能研究

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study on isobaric vle data for the system of dimethyl carbonate and n-octane

碳酸二甲酯-正辛烷体系等压气液相平衡研究

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objective to study effects of ectopic expression of bcsc-1 gene on the malignant activities of human nasopharyngeal carcinoma cell cne-2l2.

目的研究BCSC-1基因异位表达对人鼻咽癌细胞CNE-2L2恶性生物学行为的影响。

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