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Combining the performance evaluation (activity, selectivity and stability) and the characterization of the catalysts (XRD, TPD, FTIR and the pore structure measure), it can be concluded that :(1)The activity of modified β is higher than MCM-22, but the selectivity of ethylbenzene is lower about 3% than that of MCM-22;(2)The mounts of diethylbenzene and the other by-products are higher 1.7 times and 1.5 times than these of MCM-22 respectively;(3)The catalytic performance of zeolite mixture is nearly equal to modified β, but the selectivity of ethylbenzene is higher about 0.5% than that of modified β;(4)The catalytic activity of zeolite is mainly correlated with the number of acid sites, strength and distribution, and the distribution of products is determined by the binding energy of ethylbenzene and the pore structure, while the stability of catalyst is affected by the amount of poly-ring aromatic alkylate and the pore structure.
以性能评价和特性表征(XRD、TPD、FTIR和孔结构测定)相结合的方式,对上述三种催化剂性能比较的结果表明:(1)改性的活性明显高于MCM-22,但乙苯选择性却低于MCM-22绝对差约3%;(2)改性(上二乙苯和其他副产物的生成量分别约为MCM-22上对应值的1.7和1.5倍左右;(3)混合型催化剂的性能与改性相仿,但乙苯选择性提高0.5%左右;(4)对乙苯合成,沸石催化剂的活性主要取决于其B酸中心数、酸强度及酸分布,产物分布则取决于催化剂表面的乙苯脱附能垒值和孔道结构,而稠环芳烃的生成量和催化剂孔道结构是影响催化剂稳定性的主要因素。
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Authorities shall consider all available evidence on the proper allocation of costs, including that which is made available by the exporter or producer in the course of the investigation provided that such allocations have been historically utilized by the exporter or producer, in particular in relation to establishing appropriate amortization and depreciation periods and allowances for capital expenditures and other development costs. Unless already reflected in the cost allocations under this sub paragraph, costs shall be adjusted appropriately for those non recurring items of cost which benefit future and/or current production, or for circumstances in which costs during the period of investigation are affected by start up operations.
当局应考虑全部现有的成本适当分配的证据,包括出口商或生产商在调查过程中作出的分配证据,其前提是该分配在历史上一直被出口商或生产商所使用,特别应对有关确立适当的分期付款和折旧期限、按资费用以及其它开发成本的补助费加以考虑,除非根据本款项规定已在成本分配中得到反映,否则成本应对那些有利于将来或当前生产的非经常性项目成本作出适当的调整,或者对在调查期间成本费用因刚开始生产而受到影响的情况作出适当的调整。
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I consider the people who constitute a society or nation as the source of all authority in that nation, as free to transact their common concerns by any agents they think proper, to change these agents individually, or the organization of them in form or function whenever they please; that all the acts done by those agents under the authority of the nation, are the acts of the nation, are obligatory on them, and enure to their use, and can in no wise be annulled or affected by any change in the form of the government, or of the persons administering it.
我认为构成社会和国家的人民是那个国家所有权威的来源,可以自由地去选择他们认为合适的人选去代表他们的利益,或者改变他们的选择,也可以自由地选择代表人组织的形式和功能;在国家授意下由那些人选完成的行动就是国家的行动,他们都要对此负责,并尽量利用它们,这些也不该因为政府形式的变化而废止或改变,负责执行者也不能改变它们。老绿赞成的,我不能统统反对!
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Globalization should be the content and resuit affected by objective reality, by subjective desire and by mutual-effect between the two, its heart is unprecedented development on the basics of productive forces.
全球化包括客观现实、主观战略和主客观相互作用这三个层次相互促进、共同作用的内容及其结果,核心是生产力发展基础上交往关系的空前活跃。
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From the statistical data analysis, real estate in the first quarter of this year's investment growth rate as high as 41.1 percent, slightly lower than the 43% investment in fixed assets increases, while the experience of about half a year of control, solid cast in the August an increase of 26.2 percent, while real estate investment during the first 8 months the average is still 28.8%, indicating the need to increase the real estate industry is still quite the consolidation efforts, otherwise they will be a waste of limited land resources, and in many aspects negative effects:(1) urban land supply is relatively limited, and particularly in coastal cities for the likelihood, the land and property prices in speculations will be driven by continuing higher, so that industrial and commercial service industries and residential property prices and rental values of retail trend or, an increase investor, home-owners or hirers of the burden of adverse business, and they may even like Hong Kong after a number of years due to land and property prices and rents are too expensive to make industrial and commercial operation of the service industry high cost, and even so that the quality of life for the people affected by high land prices and property prices have a lower erosion.
从统计数据分析,房地产在今年第一季度的投资增长速度高达百分之41.1 ,稍低于43 %,固定资产投资增加,而经验约半年的控制,固投在8月增加了26.2点,房地产投资在头8个月的平均水平仍然是28.8 %,表明有必要增加房地产业仍然相当巩固的努力,否则将会浪费有限的土地资源,而且在许多方面的负面影响:( 1 )城市土地供应相对有限,特别是在沿海城市的可能性,土地和房地产价格在投机的推动下将继续走高,因此,工业和商业服务行业及住宅物业价格和租金价值的零售趋势,或增加投资,以家庭为业主或租户的负担,不利的业务,他们甚至可能会像香港一样若干年后,由于土地和物业价格及租金过于昂贵,使工业和商业运作的服务行业成本高,甚至,这样的生活质量受影响的人高地价楼价较低侵蚀。
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A correlation of the experimentaldynamic response of the vessels with the theoretical finite element calculations ispresented and discussed.1 The response of the end caps is dominated by transverseand torsional deformation of the plates.The membrane strain is negligible compareto the lateral strain.2 In the lengthwise direction of the inner cylinder,themembrane strain has the same magnitude as that of the bending strain. But for theouter cylinder,the former is much smaller than the later at the same direction.3 Forboth the inner shell and the outer shell,hoop strains are primarily due to themembrane deformation.The amplitude of the circumferential flexural strain isconsiderably small.4 Peak strains in the vicinity of the connection portion of theend caps and the shells are very high.This is important to assess the safety of thecontainer in case of repeated use or tests.5 The applying load to the end cap isdifferent from that to the inner shell plate, but peak stains and nodal displacementsof these two structural parts are nearly the same.It can be inferred that the dynamicresponse of the end cap is greatly affected by the structural vibration excited by theimpulsive loading.
结果表明:1在本文所考虑的载荷水平下,平板变形以板的横向弯曲和扭曲为主,中面应变幅值比较小。2对于内容器,其纵向变形中弯曲应变和中面应变大小接近;而对于外容器,其纵向变形以弯曲为主,中面变形比较小。3内、外壳体的环向变形主要是中面应变,弯曲应变分量很小。4平板和壳体连接处应变很大,这对于多次使用或实验时评价结构安全有指导意义。5尽管内筒底板和大封头上的作用载荷有一定差别,但应变峰值和节点位移峰值基本相近,这说明脉冲载荷激发起来的结构振动对封头的动态响应有很大影响。
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By analyzing their testing and fracturing data,it is concluded that single infill well 's production rate is affected by its infill way and a good result could be gained where infilled at areas without being involved by water and abnormal pressure caused by water injection.
安塞油田 1996~ 1999年共打加密调整井 6 5口,通过对这些加密井的试油、压裂资料分析,认为加密井的单井产量受其加密方式的影响,在水未波及地带或注水形成的异常高压区加密均取得较好的效果。
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The main research tasks and results are as follows:(1) Through comparing the stress intensity factor of compact tension specimen calculated by finite element software with the theoretical value, the feasibility of calculating fracture parameters of crack tip in ABAQUS software was verified.(2) The relationship between the elastic modulus of the material and research scale was studied based on deriving the cohesive stress theory and other relevant theories. And the elastic modulus of the material on meso-scale was determined.(3) Global model and sub-model of the finite element were built in th...e macro-scale, and stress-strain field nearby the crack tip was analyzed, and the results show that the detailed stress-strain in the crack tip could be obtained by using the sub-model technique.(4) In meso-scale, the crack growth model was also established by assuming the crack propagating along the grain boundary, and the detailed stress-strain field in the crack tip was obtained.(5) The effect of crack length on Von Mises stress, and maximum principal stress and strain was analyzed in meso-scale when equivalent KI equals 30MPa.m1/2. And the results show that except for crack tip area, the stress-strain distribution in whole specimen is not affected.
主要完成研究内容和取得成果如下:(1)利用有限元软件计算出紧凑拉伸试样的裂纹尖端应力强度因子KI值,其结果与理论值一致,从而验证了利用ABAQUS计算裂纹尖端相关断裂参量的可行性;(2)在研究内聚应力等相关理论的基础上,推导出了研究尺度与材料弹性模量的近似关系,并确定了介观尺度上的弹性模量;(3)在宏观尺度上建立了全局有限元计算模型和子模型,得到了裂纹尖端应力应变场分布,结果表明利用子模型技术获得比较准确的裂纹尖端应力应变场分布是可行的;(4)在介观尺度上利用平均晶粒尺度的方式建立了裂纹沿晶扩展模型,得到了裂纹尖端断裂过程区的微观应力应变场;(5)当应力强度因子为30MPa.m1/2时,分析了介观尺度上在裂纹沿晶扩展过程中裂纹长度对Mises应力、最大主应力和应变的影响,结果表明,裂纹扩展长度对试样整体应力应变分布影响不大,而对裂纹尖端区域有较大影响;(6)介。。。
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It was also found that the strength of FF specimen is close to the sumation of the strengths of FC and FS specimens with the same board thickness and screw spacing as FF specimen. As compared the test results with the research findings from Li [2]and Luo [3], It can be concluded that the failure mode of specimen is affected by both the sheathing thickness and the stud thickness. Different from this study, the failure mode of Li's test specimens is torsional-flexural buckling for most cases. The predicted values computed based on the AISI Specification seem to be conservative as compared to the tested values of FF specimens. Therefore, it is suggested that the effective length factor, K, can be taken as 0.5 to determine the wall stud assembly strength.
在三种不同试体组合分析时也发现,具外覆材支撑之立柱与外覆材受压内含支撑之立柱,两者之破坏强度相加,约等於具外覆材之墙体之破坏强度;试验结果与李岱真、罗浩之研究比较后,发现不同厚度之立柱与不同厚度之矽酸钙板之间束制关系明显影响强度之差异,且李岱真之试体破坏模式多为整体扭转-挠曲挫屈破坏,与本研究有较大差异;对於具外覆材之墙体与AISI预测值比较后,AISI规范预测值较保守,因此本研究有效长度系数建议采用0.5。
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What geminiviruses that can be acquired by whitefly and the possibility for virus transmission are affected by the host plants, the special protein of geminiviruses as well as the GroEL proteins synthesized by endosymbionts of the vector.
寄主植物、双生病毒的一些特殊蛋白以及烟粉虱内共生菌产生的QroEL蛋白,都可影响烟粉虱携带的双生病毒种类及传毒的可能性。
- 推荐网络例句
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She gently rebuff ed him, but agreed that they could be friends
她婉言拒绝了,但同意作为朋友相处。
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If in the penal farm, you were sure to be criticized.
要是在劳改农场,你等着挨绳子吧!
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Several theories about reigniting and extinguishing of the arc have been refered.
本文综合考虑了几种电弧重燃和熄灭理论。