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Abstract: Ferroelectric based nanocomposites are a new class of mesoscale functional materials which have a high dielectric constant and high electric field.Recent progress in this research area is reviewed briefly,and a novel ferroelectric composite with
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文摘:铁电体基纳米复合材料作为一类新型功能材料，提供了一系列“高介-高场”调制的介观系统.文章介绍了这一领域的最新研究进展，并重点报道了一类新型铁电体基纳米复合材料――铁电体半导体量子点复合材料的制备与光学性质，该材料在新型电致发光元件及量子点激光器件中有着很好的应用前景. |
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Abstract: Field experiments were conducted to observe winter wheat resp onse to nonunifo rm sprinkler irrigation under various Christiansen uniformity coefficient (CU) levels ranging from 62%to 82%.
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文摘:利用田间试验研究了不同喷灌均匀系数条件下的冬小麦耗水规律及喷灌蒸发漂移损失。 |
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Abstract: First support environment is introduced finally the test's design principle and the structure of the system is emphases discuss in the article.
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文摘:介绍了测试系统的支撑环境并重点探讨了测试的设计原则和系统结构的设计。 |
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Abstract: First, this paper deduced the diffraction equation for refractive index phase modulation holographic grating, and pointed out that the diffraction efficiency was mainly influenced by refraction index modulation, and the diffraction efficiency of
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文摘:首先推出折射率相位调制型全息光栅的衍射方程,由此说明衍射效率主要取决于调制折射率,且各级衍射光的衍射效率不同是多种原因造成的。 |
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Abstract: Focused on the metal plastic forming of valve bodies for power plant boiler,a new process named “Shear Extrusion”is described in this paper.The numerical simulation analysis is carried out by using the 3-D DEFORM software to predict the distribu
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文摘:针对电站锅炉用大型截止阀体的制造新工艺—“剪切挤压”，利用数值模拟的方法对剪挤工艺进行研究，得到了成形过程中速度、应力、应变及温度场等的分布及金属流动规律，并通过物理模拟实验进行了验证，进而为获得阀体剪挤制造的最佳成形工艺参数提供可靠依据。 |
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Abstract: Focusing on such aspects as natural drugs, natural pesticides, growth and ecologic regulators, natural dependence drugs and total synthesis of natural organic compounds, this paper reviews some compounds with greater social significance or acade
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文摘:本文从天然药物、天然农药、生长及生态调节物质、精神依赖药物和全合成等几个方面，通过评论一些有较大社会意义或学术价值的化合物，试图透视具有生理活性天然有机化合物这一常盛不衰的热点研究领域的发展脉络，及对人类生活的意义。 |
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Abstract: Following the population and the economic rapid development, the Seoul Metropolitan Government introduced a deep and wide range of reforms to its bus transport system.
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摘要：随着经济、人口的快速发展，首尔开展了一次针对地面公交系统的成功而深刻的变革。 |
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Abstract: Following the review of impact of environment and health from nuclear fuel cycle of China, the analysis is carried out to the improvement of producing and protection techniques of uranium mining and metallurgy and the decrease of impact of envir
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文摘:回顾了我国核工业在过去30多年的发展过程中环境、健康影响的变化，分析了其中的重点环节——铀矿冶设施生产和防护技术的改进对降低辐射危害的作用，并以铀矿冶设施中铀矿井废水和铀尾矿库治理的防护水平和代价为例，讨论了铀矿冶设施防护的代价效能和防护水平。 |
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Abstract: For a class of nonlinear hyperbolic equations,the existence and uniquess of a global weak solution are obtained,the dependent relation of existential interval of a classical solution on data is gained too.
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文摘:对一类非线性双曲方程给出了整体弱解的存在唯一性及古典解关于时间的存在区间对资料的依赖关系。 |
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Abstract: For discussing the impact of different compensation methods on medical service needs and utilizations, the paper includes two compensation methods, fee for service and fee per capita, and compares them under the same gender, age group, and medic
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摘要：为探讨不同费用补偿方式对医疗服务需求和利用的影响程度，本文采用按服务项目付费和按人头付费二种补偿方式，比较二种方式下相同性别、相同年龄段人群，在相同医疗保险制度模式下其门诊医疗服务的需求和利用情况。 |
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Abstract: For offsbore oil fields with large power and heating loads, butlack of asaociated gas, the solution of power and heating co-generation will improve theovemll energy efficiency and cut down operating costs, thus improving the mteof return and low
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文摘:对于电负荷和热负荷都比较大而伴生气量严重不足的海上油田，实现热电联供将会提高能源综合利用率，节省操作费用，从而提高油田收益率，降低桶油成本。 |
