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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。

This paperindicated that it was good for condensation reaction when benzene-ring bearingelectron-attaching groups. It also showed that and the 6-hydroxyl group could bereacted with acyl halide, haloid ether and halo alkene, but not with halo alkane. It wasnot only the first time to find that the reaction product of D-mannitol and aromaticaldehyde is tri-condensation derivatives, but also the first time to obtain thep-phthaldehyde-sorbitol derivatives containing eight hydroxyl groups.

研究发现:苯环上有吸电子基团时对缩合反应有利;多元醇缩醛衍生物6-羟基除与酰氯反应外,也能和卤代酸酯、溴代烯反应,但不与卤代烷反应;首次发现D-甘露醇与醛反应主要得到三缩合物;首次合成了含有8个羟基的对苯二甲醛和山梨醇的缩合物。

No doubt ,our legislative and judicative activities must obey those rules ; many other theses also has talked about that. But the difference is , this dissertation not only has talked about the martime transport service rules under GATS , but also has introduced the new negotiation about maritime transport service in Doha. Next it pointed out the difficulties of the new negotiation and predication has been given. It hopes that this part will give somewhat help to people whose work related on maritime service .

第一部分介绍了 GATS 中的海运服务规则,无疑这些规则都是我国海运服务立法和司法实践应该遵守的,以往的学术论文对此也多有涉及,所不同的是,本文除 GATS 中的海运服务规则外还就海运服务新一轮谈判的情况作了较为详尽的介绍,指出了海运服务谈判存在的现实困难,并预测了海运服务谈判的前景,以期能为从事海运服务理论研究和实践工作的人员作一定的参考借鉴。

Enterprises must innovate the marketing tactics and marketing way in order to meet knowledge type customer"s demands, Knowledge marketing has offered solved tools as innovative mode of marketing those enterprises in era of knowledge-driven economy, in the marketing system of knowledge, traditional 4Ps marketing association tactics also have been given the new meaning, formed the 4Is marketing association tactics (such as Individual product and service, Price Indenture, The Platform Bases onInternet, Knowledge Intercourse)that have already been realized and proved in practice, Except the innovation of marketing association, the way of knowledge marketing is innovating constantly too, Learning Marketing and Experience Marketing is two ways among them, They direct against three kinds of rare resources on the knowledged customer to design concrete marketing method, tool in order to obtain the knowledged customer"s attention and trust separately, Learning Marketing attracts the attention of the knowledged customer according to the knowledge learning and exchanging of enterprises" marketing employee, management employee and the whole society. Experience Marketing let knowledged customer participate in the course of the products or the service according to consumption experiencing, a kind of special marketing mode. Not only met the characteristic that the knowledged customer is fond of participation but also obtained the knowledge type customer"s trust.This article includes five chapters:Chapter one preface introduces such questions as writing background, original intention of the selected title and thinking frame in the writing course of this article and expounds the reason emphatically that how to choose knowledged customer to summarize the new customer group. Study is a way to obtain knowledge; knowledge is an achievement of study also includes the customer"s self- innovation, meanwhile, proves to the small difference between the customer and customer.Chapter two put forward the knowledged customer"s concept, defines the knowledge customer"s definition and analyze its intension and epitaxy, also discusses rare resources on the knowledged customer. This article defines the knowledged customer as those groups and individuals that utilize knowledge to guide one"s own consumption practice and constant study and carry on the knowledge innovation constantly, they have completely new traits different from the old customer, time

企业必须对营销策略和营销方式进行创新以满足知识型顾客的需求,知识营销作为知识经济时代企业的一种营销创新模式为我们提供了一个解决工具,在知识营销体系中,传统的4Ps营销组合也被赋予了新的意义,形成了4Is营销组合(即个性化的产品和服务Individual product and service、基于协商下的价格约定Price Indenture、基于网络的信息技术平台The Platform Bases on Internet、知识的交流Knowledge Intercourse),4Is营销组合已被越来越多的企业意识到并在企业的营销实践中得到了验证;除了营销组合的创新,知识营销的营销方式也在不断地创新,学习营销和体验营销便是其中两种方式,它们针对知识型顾客身上的三种稀缺性资源设计具体的营销方法、工具分别用以获取知识型顾客的注意力和信任度,其中学习营销通过企业内部营销人员、管理人员和企业外部全社会的知识学习、交流来吸引知识型顾客的注意;体验营销则通过消费体验这种特殊的方式让知识型顾客参与到产品或服务的过程

But when we examined the structure of cultivar of D. huoshanense, endomycorhiza was founded unexpectedly. And in the wild type of D. huoshanense, fungi was also founded in its stems and leaves. So the author thought that endomycorhiza is not only located in the roots of Dendiobium plants, but also exists in other organs of plants, including stems, leaves. As plant produces seeds, mycorhiza could enter into the cells of seeds. When mature seeds germinate in media, the endomycorhiza enter into the roots of cultivar.

石斛属植物与真菌共生,根为菌根,作者在研究霍山石斛组织培养型结构时发现,组织培养苗的根部也分布有真菌,而且在野生霍山石斛的茎、叶中发现有真菌,作者因而指出,真菌并不是完全分布在根部,而是遍布于整个植物体,推测植物形成种子时,真菌进入种子,所以在组织培养时,真菌随着种子的萌发,进入植物体根部。

Large-scale joint households lace cultivation, intensive processing and Minshan Trifolium pratense Minshan Phleum hastily products Minxian grass not only is the current industry needs, but also broaden the channels for peasants to increase income needs, but also the needs of the ecological environment.

大规模联户连片种植、集约化加工岷山红三叶及岷山猫尾草草产品不仅是当前岷县草产业发展的需要,也是拓宽农民增收渠道的需要,更是生态环境建设的需要。

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。

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。

This paper discusses some application cases of the error propagation law by the examples of trigonometrical survey, and presents that not only sum function and numeral multipling function in which there is only one independent observed value but also more complex functions which are equal in mathematics are not opposite in the process of error propagation according to the error propagation law.

1引言本文以三角测量为例,对误差传播定律一些应用问题进行了讨论,指出当只有一个独立的观测值时,和函数与倍数函数运用误差传播定律不会出现悖论;如果在测量工作中有多余的直接观测值,就需用平差后的间接观测值按协方差传播律来计算,这样数学中相等的函数关系才能得到同样的函

While I am on the way to the twin falls, Georgie walks to me and inform that she is leaving for Paia now. Oh! Yeah! I would like to go Paia contrast to Twin falls. As Usual, she drives to my destination and drop me off. This time, I am not only sitting in the coffee shop but also strolling the beach. This beach in Paia is very clean. I don't see any trash on it. Also, there are a few tourists surfing unlike Wakiki beach with hundred tourists although today is Saturday. I even see some ladies do sunbathing. There is something funny but weird for me. Foreigners, American and European, are neither afraid of taking a sunbath in the sunlight nor fitting their bra in the public.

准备要走出农场时Georgie正好要出门到镇上去洽公,这时只想当跟屁虫还管什麼瀑布,这次她一样把我丢在网路咖啡厅就离开,今天我没有单单待在咖啡厅,把包包放下点了杯拿铁坐热椅子后,慢慢沿著海滩方向边散步边欣赏周边风景,要把上次忘记走访给补回来,Paia海滩上的沙是白细沙,虽是周末假期但海滩上的游客并不多,不会有像在Wakiki海滩的那种人山人海的盛况出现,且海滩也很乾净没有见到垃圾的踪迹,阿朵仔果然和东方人非常不同,超级喜欢作日光浴,即使被晒的黑抹抹老了会有斑也不在意照晒不误,像我这个见光死的小白犬只敢戴著帽子全身包的紧紧的站在远处偷偷拍照,这还算是小巫见大巫,阿朵仔让我感到夸张的是连当众乔奶也非常的给它不在意,世风日下哦!

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In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是,在否定句或疑问句里,这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷

Nusa lembongan : Bali's sister island, coral and sand beaches, crystal clear water, surfing.

Nusa Dua :豪华度假村,冲浪和潜水,沙滩,水晶般晶莹剔透的水,网络冲浪。