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The principles and process of cyclohexanone oximation in hydroxylamine-cyclohexanone process were introduced. Influencing factors such as temperature, feed-in distribution of cyclohexanone, pH value of buffer solution and pulse speed were discussed in detail. After some improvement measures were put forward and applied according to these factors, the efficiency of oximation reaction increased.

介绍了羟胺-环己酮法中环己酮肟反应的原理及工艺流程,讨论了反应温度、环己酮进料的分布、缓冲溶液的pH值、脉冲速度等因素对肟反应效率的影响,针对各个影响因素提出了改进肟反应条件的措施并应用于生产实践,提高了肟反应效率。

Pcr products were visualized under uv after agarose electrophresis. results: the hypermethylation of blu gene promoter was detected in all the 12 frozen tissue cases (100%) and 8 out of 35 paraffine embedded tissue cases (23%) by methylated primer and the hypermethylation of arf was observed in 1 of 20 frozen cases and 3 of 35 paraffine embedded cases.

结果:在12例鼻nk/t细胞淋巴瘤冰冻组织病例中,12例均有blu基因高度甲基,仅1例有arf基因高度甲基;35例石蜡组织病例中,blu基因高度甲基8例,arf基因高度甲基3例。

The process of the present invention consists in bringing into contact, on the one hand, gaseous phosphorus pentafluoride or a gaseous mixture comprising phosphorus pentafluoride and hydrochloric acid, and, on the other hand, a solution of lithium fluoride in hydrofluoric acid, in a column (10) having a sufficient number of transfer units to carry out the reaction of PF5 with LiF under the chosen conditions of temperature, of pressure and of molar ratio of the two contrasting reactants and with complete or substantially complete absorption of the PF5 in the column.

本发明方法是让气态五氟磷或五氟磷与盐酸的气态混合物与氟锂的氟氢酸溶液在塔(10)中接触,该塔转单元数足以在选定温度、压力与两种反应剂摩尔比条件下使PF5与LiF反应,塔中五氟磷完全或基本完全被吸收。

The following conclusions have been gotten from a large amount of experiments and determinations: Triiodide, pentaiodide, heptaiodide, nonaiodide, undecaiodide of solid tetra-n-butyl ammonium polyiodides and tetrabutyl ammonium bromide polyiodides can be synthesized by solid phase process which is a economic easy way, while its not suitable for synthesizing solid tetramethyl ammonium polyiodides; Solution polyiodides of triiodide, pentaiodide can be synthesized through the complexation process, and TX-10 is a better complexing agent; Triiodide, pentaiodide, heptaiodide resinic polyiodides were synthesized by ion-exchange of resinifying process, and that is a viable easy way.

在大量实验和分析的基础上,可得到以下结论:用固相法可以合成出碘三、碘五、碘七、碘九和碘十一形式的正四丁基多碘铵固体高聚碘和四丁基多碘铵固体高聚碘系列合物,是制备高聚碘的经济、方便的合成方法,但此法对合成四甲基多碘铵固体高聚碘系列合物并不适用;TX-10是合成溶液高聚碘较佳的络合剂,通过其络合作用可以合成出碘三和碘五形式的溶液高聚碘;采用树脂法,通过离子交换,合成出了碘三、碘五和碘七形式的树脂高聚碘,此法简单可行。

There are many methods in dealing with this problem, such as naive factorization, QCD factorization approach, perturbative QCDfactorization approach, etc.

长期以来,为了提高强子矩阵元计算的精度,人们提出了多种因子方法,例如:简单因子方法、QCD因子方法、pQCD因子方法,等等。

College of Life Science,Hebei University, Baoding 071002,ChinaAbstract: The activesite of immobilized penicillin G acylase can be determined according to the precipitantproduced in the reaction between phenylacetic acid and capture reagent. Moreover, thelocalization of the immobilized penicillin G with different activity is done as well.

固定青霉素G酰酶活性的X射线微分析—活性定位姚子华黄永章仇满德王书香张贺迎武金霞潘延云周艳芬摘要:利用苯乙酸与捕捉剂反应天生的沉淀,确定固定青霉素G酰酶的催活性部位。

Based on the source terms and fusion burn-up equations,a three-temperature plasma model is founded in which the electrons,ions,and the radiation filed are represented by separate temperatureskT_e,kT_i and kT_r,respectively,where kT_r is characterized by a Planckian distribution.

第四章建立了考虑α粒子慢的两温模型和三温模型,首先导出了考虑慢的α粒子对等离子体的能源项,替换已有的两温模型的等离子体能量密度方程中的能源项,将其改进为考虑α粒子慢过程的两温模型,与瞬时沉积能量的两温模型作了对比,在不同的初始温度密度条件下考察了α粒子慢对等离子体聚变燃烧的影响。

Through studying differences of concepts among these three types of migrant workers, trend of concept development can be concluded as: Rationalization of organizational or collective identification, plebification of pursuing of right and power, modernization of values and citizenization of legal sense and professional ethics.

在考察三种类型农民工群体思想观念差异性的基础上,指出其思想观念的发展趋势:组织认同理性、权利追求公民、价值观念现代、法制观念市民和职业道德市民

And it is expected to replace the expensive organic polymer coagulants which were often suspected of being dangerous to human.The preparation technique of HSPSAS was introduced in this paper. The parameters of the process were discussed by the method of orthogonal design, such as molar ratio of Al/Si, the pH of polysilicate, the aging time of polysilicate, the pH of PSAS, the aging time of PSAS, intake of PSAS, and so on, and then an optical technology was obtained.

本文介绍了聚硅酸硫酸铝絮凝剂的制备工艺,并利用正交设计的方法,对其中Al/Si摩尔比、硅酸熟pH值、聚硅酸熟时间、药品熟pH、药品熟时间、投药量等制备参数进行了分析和讨论,得到优的制备条件,确定了更为合理的制备工艺。

Ore deposit, have been studied detailly; the orebody pattern (sedimental bedded ores combined with stringer ores of hydrothermal origin) is also outlined; four metallogenic epoches are devided; the zoning of mineralization (including zones of ores, elements, mineral assemblages and temperature of mineralization) have been depicted; the main types of wall-rock alteration are characterized as propylitization of basic rocks and pyritization-sericitization-silicification of acidic pyroclastic rocks; the origin of ores and seven kinds of main minerals have been studied; and the metamorphism and deformation of orebodies is thought mainly due to the shearing and the intrusion of subvolcanic rocks

研究了七个矿带特别是I号矿床的矿床地质特征,描绘了矿体的双层结构(沉积矿石与热液充填交代的细网脉状矿石),划分了四个成矿期次,区分了矿分带(包括矿石组构的成因分带、元素分带、矿物组合分带、温度分带),指出了围岩蚀变的主要特征是细碧岩青盘岩而石英角斑质凝灰岩黄铁绢英岩;对矿石及七种主要矿石矿物的成因作了研究;探讨了矿体的变质、变形,指出韧性剪切及次火山岩侵入的热力作用和应力作用是导致矿体变质变形的主要原因

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推荐网络例句

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm~150rpm时取得最大值,此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世,形体几无变化。

When I was in school, the rabbi explained everythingin the Bible two different ways.

当我上学的时候,老师解释《圣经》用两种不同的方法。