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Dealcoholization temperature markedly influences the surface area and porosity of the resultant MAO-supports. When the support was pretreated at lower or higher temperature, the corresponding MAO-support shows very low surface area; 2.XRD and IR analyses indicate that MAO has reacted with the residual ethanol in the supports, which is an important manner to get MAO fixed on the carrier. Morever, XPS analyse indicates that MAO can also be coordinated with MgCl_2, which is another way to get MAO fixed on the support; 3.ICP and EDX analyses indicate that dealcoholization temperature not only determined the element content on the solid catalyst, but also influences the element distribution on the carrier; 4.The activities of the supported phenoxy-imine catalysts and the properties of resultant polymers are strongly dependent on the dealcoholization temperature. The support (MSP-5) obtained by treating MgCl_2·2.56C_2H_5OH at 160℃for 4 h, then modified by MAO is very effective for immobilizing complex 3, the resultant solid catalyst (MSPC-5) shows very high activity in ethylene polymerization, and its kinetics of polymerization is stable during the reaction process. Finally, PEs with spherical morphology and high bulk density (over 0.35g/ml) were obtained, without reactor fouling; 5.In this work, polymerization conditions such as alkylaluminums, Al/Zr ratio, temperature and H_2 had a pronounced effect on the activity of MSPC-5 and properties of PE;(3). New MgCl_2-Supported Single-Site Catalysts for Ethylene Polymerization In this work, a kind of new MgCl_2 support was obtained by anhydrous MgCl_2 co-milled with solid MAO, and it is a creative contribution. Then some single-site catalysts were supported on the new MgCl_2 support, and the resulted solid catalysts were tested in ethylene polymerization, the results indicated that: 1.XRD and IR analyses indicate that MAO does be coordinated with MgCl_2, which is in good agreement with the results obtained by XPS; 2.co-mlling time had no obvious effect on the texture of support after 12 hours; 3.In this work, MgCl_2 was co-milled with solid MAO for different hours, and then complex 3 was supported on these co-milled supports. It was found that co-milling time markedly influences the activity of solid catalysts, but it had negligible effect on the kinetic profile and the properties of resultant PE.

XPS研究结果表明,MAO不仅仅只和乙醇作用,MAO还与MgCl_2本身有一定的作用,这是一个极为重要的发现; 3、通过ICP和EDX表征,发现载体的脱醇温度直接影响着元素在固体催化剂中的含量及分布; 4、脱醇温度极大地影响着负载苯氧基亚胺类催化剂的活性和聚合物的性能,特别是原始载体经160℃活化4小时制备得到的固体催化剂MSPC-5的活性明显高于其他脱醇温度条件下制得的固体催化,并且催化剂寿命长,表现出稳定的动力学行为,最终获得了高堆密度(大于0.35g/ml)的球形聚乙烯颗粒; 5、本文选择MSPC-5为研究对象,考察了聚合反应参数对催化剂的活性及其聚合物的影响,研究发现:不同的烷基铝对催化剂具有非常重要的影响,特别足TIBA对MSPC-5的助催化活性最高,烷基铝的加入量有一个较佳值,聚合温度为80度时活性最高,H_2的加入使催化剂的活性明显降低且聚合物的分子量也减小;、新型氯化镁载体负载单活性中心催化剂催化乙烯聚合本文创造性采用固体MAO与无水氯化镁直接进行共研磨,制备出了一种的新型的氯化镁载体,并将该载体用于多种单活性中心催化剂的负载化研究,研究表明: 1、通过BET、XRD的表征,再次证实了MAO与MgCl_2之间具有直接作用,与XPS的研究结果相一致; 2、当研磨时间高于12小时时,延长研磨时间对载体的结构没有显著的影响; 3、将配合物3负载于共研磨时间不同的一系列载体上,乙烯聚合结果表明,尽管共研磨时间对负载催化剂的活性具有明显的影响,但是它对聚合物的性能以及催化剂的影响不明显。

The study indicates that the Pb and Zn ore-forming elements probably come from the basement rocks; The initial Pb isotope could be derived from the crust-mantle mixing in the erogenic belt; sulfur isotope composition is enriched in heavy sulfur that may have come from the seawater sulfate in the synchronous sedimentation; the ore is characterized with REE enrichment, obvious fractionation of LREE and flat-pattern of HREE; ore-forming media is thermal brine fluid; both mineralization temperature and pressure are low; the metallogenic epoch is probably in late Dengying epoch of Sinian period.

研究表明,基底岩系可能为成矿元素Pb、Zn的主要来源;原始铅主要来源于壳幔棍合的造山带;硫同位素富集重硫,可能主要来源海水硫酸盐;矿石中稀土元素富集,轻稀土分异较明显,而重稀土分异不明显;成矿流体推测为热卤水性质,成矿温度为中低温,具有低压浅成成矿特点;矿床形成的初期应始于震旦纪灯影世晚期。

According to the effect of guanylic acid on fluorescence intensity of ligand-Cu or Fe (Ⅲ binary complex system, it is found that guanylic acid and Cu, Fe have synergic quenching effect on the fluorescence of ligand due to the formation of ternary complex.

对原始配体CPFX进行了元素分析、FT-IR、〓H-NMR、〓C-NMR、MS等手段进行了结构确证,并讨论产生这种变化的可能过程,对配合物配体间的相互作用(氢键作用、芳环堆积作用)着重进行了讨论。

Xinyi's works introject many kinds of oriental elements and primitive culture which is natural and simple.

欣一先生的作品汲取了东方文化中多种抽象元素及人类原始文化里自然而朴素的创作机质。

The system consists of the following procedure: pre-concentration of metallogenic matter in living organisms in primary depositional basin; solution, absorption and concentration of metallogenic matter in organic matter and organic thermal fluid generated from organisms during lithogenesis; migration of metallogenic matter in organic thermal fluid from basin to mountain region and activation of metallogenic elements by organic matter and organic thermal fluids in sedimentary strata in mountain regions during basin compaction and mountain building; metallization due to reactions between inorganic fluid and organic fluid bearing metallogenic matter and because of reductions and absorptions by organic matter in mountain regions.

生物成矿系统的内容是:在原始盆地接受沉积时,生物对金属成矿物质就存在预富集作用;在成岩过程中,生物转化为有机质及有机热流体,对金属成矿物质存在溶解、萃取、富集作用;在盆地压实和造山活动中,盆地中有机热流体向造山带运移,此过程流体携带大量成矿物质,对金属成矿物质存在迁移作用,而处于造山带沉积地层中的有机物及有机流体对金属成矿元素存在活化作用;盆地有机热流体与造山带含金属流体会合,以及造山带有机质及有机流体对金属元素进行还原和吸咐,最终形成金属矿床,对金属成矿物质存在成矿作用。

The effect of nitridation conditions on the properties of the products were investigated through experiments, and the influencing equation of the effect of additive element contents was gained.

通过实验研究了工艺条件对氮化产物性能的影响,并总结出掺杂元素原始成分对氮化反应速率的影响规律。

O?C?Cu isotopes. revealing that the mixed hydrothermal fluid of magmatic water and meteoric water reactivated the ore elements in the carbonate rocks and quartz diorite. Copper was transported, as Clcomplexes in the ore fluid and precipitated to enrich and thicken the primary sedimentary protore.

认为该矿床是在岩浆水和后期少量大气水的加入而形成的混合热液共同作用下,活化碳酸盐岩地层和石英闪长岩中的铜等成矿元素,形成含矿热液,并以铜的氯络合物方式运移,在弱还原性条件下使原始沉积矿胚层加厚变富。

Second, we can explain about the mythological creativity in literature from the collective unconscious to the effectiveness of psychological therapy. Quyuan utilizes a large amount of mythological elements, reaching the place of mythology and his own goal to leave Ch to find a wise king. The process of reverie makes Quyuan realize and experience the plot in old the fable tales once again. According this new experience, the gap between consciousness and unconsciousness mix and get the opportunity to be reintegrated, so does the verge of split personality.

次则从集体无意的角解释,文学中的神话创造,可以发挥心治的功效-屈原运用大古代神话元素,创造〈骚〉的神话世界,并藉由神界之完成其开楚国,寻觅贤君的愿望;而在神游的过程中,屈原也重新体验远古的神话情境,在这种原始经验之中,意与无意之间的鸿沟、濒分的人格,都在此得到重新整合的机会,从而达到短暂自我心治的效果。

This paper, through an angle of the theory,tries to decode the believes of Wujiagou folktales

本文拟从卡西尔神话理论的角度出发来解读伍家沟鬼神故事中的民间信仰观并通过这种解读寻找出故事里原始思维观念中的积极元素。

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With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。

Closes the eye, the deep breathing, all no longer are the dreams as if......

关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。