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Pillared montmorillonite, as a representative of Sandwich like pillared interlayered clays ,caught many scientist"s attention not only because of its special structure of two-dimensional sheets but also its excellent activity of catalysis and adsorption. It is well documented that the method to prepare PILM, ion-exchanging, needed a long periods and was affected by many factors, and that the product had low thermal stability especially hydro-thermal stability which was the primary obstruction of its using in large-scale production. At the same time, PILM was well documented prepared with Na-montmorillonite, while there were a few documents about PILM prepared with Ca-montmorillonite. The large cost of remodel of Ca-montmorillonite to Na-montmorillonite was another obstacle of the application of PILM, while Ca-montmorillonite was widely distributed in nature, as a result, to prepare PILM with Ca-montmorillonite has practical significance. What"s more, PILM was mainly studied as a catalyst in oil refining process till now, but rarely documented in other catalysis reactions, especially in coal liquification filed which also needed high activity catalyst.
以柱撑蒙脱石为代表的具有"三明治"结构的柱撑粘土矿物因其特殊的二维孔道结构和优良的催化和吸附性能近年来成为国内外广泛关注和研究的热点,但是目前国内外大量报道的PILM制备大多采用离子交换法,生产周期很长,影响因素很多,并且产物热稳定性不够高,特别是水热稳定性较差,这是其不能在实际中大规模生产和应用的主要障碍,因此制备一种高稳定性的PILM意义非常;文献中大量报道的都是钠基蒙脱石合成的柱撑粘土矿物,传统的离子交换法必须将钙基蒙脱石钠化改型,其成本相当高,而自然界中大量存在的却是钙基蒙脱石,直接用钙基蒙脱石合成柱撑粘土矿物有很现实的意义,但目前这方面的报道却很少见;另外,迄今为止,PILM作为催化剂的研究领域主要在石油的炼制中应用,而在煤炭的液化中却鲜有报道,如果能在煤炭转化领域应用这一成果,其影响也将是相当大的。
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Pillared montmorillonite, as a representative of Sandwich like pillared interlayered clays ,caught many scientist's attention not only because of its special structure of two-dimensional sheets but also its excellent activity of catalysis and adsorption. It is well documented that the method to prepare PILM, ion-exchanging, needed a long periods and was affected by many factors, and that the product had low thermal stability especially hydro-thermal stability which was the primary obstruction of its using in large-scale production. At the same time, PILM was well documented prepared with Na-montmorillonite, while there were a few documents about PILM prepared with Ca-montmorillonite. The large cost of remodel of Ca-montmorillonite to Na-montmorillonite was another obstacle of the application of PILM, while Ca-montmorillonite was widely distributed in nature, as a result, to prepare PILM with Ca-montmorillonite has practical significance. What's more, PILM was mainly studied as a catalyst in oil refinin g process till now, but rarely documented in other catalysis reactions, especially in coal liquification filed which also needed high activity catalyst.
以柱撑蒙脱石为代表的具有"三明治"结构的柱撑粘土矿物因其特殊的二维孔道结构和优良的催化和吸附性能近年来成为国内外广泛关注和研究的热点,但是目前国内外大量报道的PILM制备大多采用离子交换法,生产周期很长,影响因素很多,并且产物热稳定性不够高,特别是水热稳定性较差,这是其不能在实际中大规模生产和应用的主要障碍,因此制备一种高稳定性的PILM意义非常;文献中大量报道的都是钠基蒙脱石合成的柱撑粘土矿物,传统的离子交换法必须将钙基蒙脱石钠化改型,其成本相当高,而自然界中大量存在的却是钙基蒙脱石,直接用钙基蒙脱石合成柱撑粘土矿物有很现实的意义,但目前这方面的报道却很少见;另外,迄今为止,PILM作为催化剂的研究领域主要在石油的炼制中应用,而在煤炭的液化中却鲜有报道,如果能在煤炭转化领域应用这一成果,其影响也将是相当大的。
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Not only does this doctrine, joining issue with sensualism, demonstrate that the mind is a living energy, which, far from letting itself be absorbed by influences from without, forms its necessary and universal principles by its own action under the pressure of experience -- not only this, but it also safeguards the autonomy of human reason against that encroachment of the Divine which the ontologists maintained.
这不但学说,加入问题与感觉,证明心中是一个有生命的能量,这非但没有让自己吸收的影响力,如果没有,形式,其必要的普遍原则,由它自己的行动的压力下,经验-不仅如此,但它也有保障的自主权,人类理性反对侵略的神圣其中ontologists保持下去。
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It not only can be men, but also of female trousers outfit, the benefits of garments, fabrics, not only in the elegant and natural and relaxed, give a person with showily uncommon temperament.
它不但可制男女裤装,而且又是女性制套裙装、童装的实惠面料,成装穿着,不仅高雅洒脱,而且宽松自然,给人以华贵不凡的气质。
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So when we felt another kind of tetra-dimensional, extreme, music-like art made up of colors and lines in Malevich and Tatlin's experiment in the early of last century, people had to get used to the visional format from Kandinsky, Pollock, Mondrian and Roscoe. The brand-new artistic experiment is further rooted into experience of our religion, music, philosophy, life and other staffs not only from format to content, but also from theory to techniques. And the traditional plane paintings are used to annotate the art meaning of non-representation. But Chinese are unwilling. It is only the format product of powerful culture in expanding, rather that there are lots of differences between the western abstract and oriental "image".
所以当我们从上个世纪初在马列维奇、塔特林的实验中,体验到一种被称为四度的、极致的、音乐似的、或者说将色彩和线编制成为另一种艺术自由的端倪时,人们就不得不习惯由康定斯基、波洛克、蒙德里安和罗斯科所带给我们的视觉图式,它们从形式到内容、从理论到技巧,无不变本加厉地把这种全新的艺术实验根植于我们对宗教、音乐、哲学、生活以及诸多问题的体验中,并用传统的二维平面绘画来诠释出非具象的艺术意义,不过这些对中国人来说,很可能是不情愿的,它只是强势文化在扩张中的样式产物,更何况这些西方式的抽象与东方式的"意象"仍然有着极大的差异。
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One of the key tasks of ecopolis development is to enhance urban ecosystem service, especially the service of lung (urban green, forests and agriculture land), kidney, skin, exit, and artery (channels, roads and metabolism networks) so as to realize a state of purification, greening, vitalization and beautification. On the other hand, the goal of ecopolis is not only the "green" of natural ecosystem, but also the "red" of human ecosystem. The "eco" in ecopolis is neither a return to primitive nature or only environment protection, nor a conquer over nature, but a integration of green rhythm (blue sky, green field, fertile land, green water) and red network (industry, transportation, city and town, culture vein), a tradeoff between environment and economy and a harmony among heaven, earth and human.
生态城市建设的核心是要强化城市的肺、肾、皮、口和脉这些生态基础设施的服务功能,实现城市的净化、绿化、活化和美化;另一方面,生态城市不只要有自然生态的绿韵(蓝天、绿野、沃土、碧水),还要有人文生态的红脉(产业、交通、城镇、文脉)及其相互的融和,而不只是保护城市环境或生物。
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It is the fluorosilicic ion that exsits in the slurry and plays an important role in flotation, fluorosilicic ion not only reacted with Fe〓 on the surface of aegirine to form ionic compound, but also formed stable Si-F bond in Si-O etching reaction. Only ionic compound was obtained when it was attached to hematite surface according to the theories of coordination chemistry, Compared with SiF〓, Fatty acid ion preferentially acts with Fe〓 on the minerals surface, therefore, SiF〓 Can't obstruct the adsorption of collector on the surface of hematite completly, but can reduce the flotation recovery of aegirine selectively.
运用FTIR、XPS等测试方法仔细研究了氟硅酸盐抑制剂对含铁硅酸盐钠辉石的选择性抑制作用机理,氟硅酸盐在弱酸性条件下对赤铁矿浮选的抑制作用很微弱,而对含铁硅酸盐钠辉石强烈抑制,从而扩大了两者之间的浮选差异;SiF〓是矿浆中起抑制作用的主要成分,SiF〓不仅与钠辉石表面的Fe〓形成离子型配合物,而且还与Si-O键形成稳定的Si-F共价键,而与赤铁矿表面只能形成离子型配合物,根据晶体配位场理论,与SiF〓相比较羧酸根离子将优先与矿物表面Fe〓发生配位作用,因此SiF〓的存在并不能完全阻碍捕收剂在赤铁矿表面的吸附作用,却能够选择性地抑制钠辉石的上浮。
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DCs acquired by our reformed methods express both CD83 and CD 14 molecules highly, and have a higher density than other domestic reports. The higher TNF in DCs culture medium of HC patient suggests DCs in patient still have antigen presenting ability and by optimization the culture medium would improve its presenting ability and have a potential value in design and application individual vaccine. Although antigens pulsed DCs have a decrescent antigen presenting ability but BCG HSP70 could induce its mature and improve its presenting ability. Suggests BCG HSP70 would be a useful mature inducer. Lymphocytes primed by DCs based HC vaccine have the specific cytotoxicity against HCC lines. The CTL after freezing and anabiotic could prophylaxis and therapy HC xenograft on nude mouse. The results also suggests that CD4〓 lymphocytes play a important role in HC with a good differentiation and would be useful in treatment this kind of HC. After being activated by Peptide LLNQHACAV of hAFP and apoptotic HCCs pulsed DCs respectively, the culture medium of activated lymphocytes both contains a high level Th1 cytokines IL-12 and TNF. Primed lymphocytes appeared a characteristic of NK cells. DCs not only inhibited the growth of human HCC and other cancer cells in vitro but also prevented the growth of HC xenograft on nude mouse in vivo. There are at least three kinds of mechanism playing important role in DC based vaccine ,there are inhibition of DCs, HC specific CTL and cytokines pathway.
诱导出的DC共同表达CD83和CD14分子,CD83分子表达明显高于国内报道;肝癌患者DC培养上清中TNF水平高于健康人,提示肝癌患者DC仍具一定的抗原呈递能力,适当调控可使其行使APC功能,以期在肝癌个体化疫苗中发挥作用;DC负载肝癌可溶性抗原后,抗原呈递能力降低,BCG HSP70可促进DC成熟,增加其抗原呈递能力,预示BCG HSP70有可能成为促进DC活化和成熟的另一重要分子;肝癌DC疫苗在体外诱导肝癌特异性淋巴细胞,活化的淋巴细胞在体外对肝癌细胞的杀伤以特异性CTL为主,同时分泌较高水平Th1型细胞因子IL-12和TNF,并抑制4种肝癌细胞生长;冷冻复苏后的肝癌特异性淋巴细胞可以预防和抑制人肝癌裸鼠皮下移植瘤,提示DC负载肝癌可溶性抗原后诱发的MHC-Ⅱ类限制性CD4〓T细胞有可能在分化程度高的肝癌治疗中发挥作用;用DC和HLA-A2〓DC分别负载凋亡肝癌细胞和hAFP218-226位LLNQHACAV HLA-A2限制性九肽,在体外诱导肝癌特异性淋巴细胞,活化后的CTL细胞分泌较高水平的Th1型细胞因子IL-12和TNF,并具较强杀伤活性,此CTL同时具备NK细胞特征;DC对肿瘤细胞的抑制作用可能是通过吞噬实现的,Fas-L在DC抑制中也起一定作用;DC对人肝癌裸鼠皮下移植瘤的抑制率为97%;在肝癌DC疫苗的作用中,至少联合3种以上机制,即通过DC的直接作用、肝癌特异性CTL和细胞因子途径直接或间接地杀伤和抑制肝癌细胞。
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In addition to physicians the Vedic Aryans also held in contempt Atharvan astrologers as well as magic, but from this came not only astrology but also the beginning of Ayurvedic medicine.
除了医生的吠陀雅利安人也举行了蔑视Atharvan占星家以及魔术,而是来自这是不仅占星术,而且还开始阿育吠陀医学。
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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 PolymerizationIn 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。
- 推荐网络例句
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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。
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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。
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A single payment file can be uploaded from an ERP system to effect all pan-China RMB payments and overseas payments in all currencies.
付款指令文件可从您的 ERP 系统上传到我们的电子银行系统来只是国内及对海外各种币种付款。