高速磁浮轨道不平顺测试及分析

研究目的：提出高速磁浮轨道不平顺处理方法,分析不平顺特征,拟合形成轨道谱,为线路卒问维护提供参考。创新要点：实现了对高速磁浮轨道不平顺的提取,确定了轨道谱参数。研究方法：基于惯性基准法,运用数字信号处理方法实现对轨道不平顺的提取,采用最小二乘法拟合得剑定子向和导向面七参数轨道谱。重要结论：定子面和导向面分别在5-100m和10-100m波长范围内平顺性状态较好,由功能件安装等引起的1-5m和1—10m波长范围内的偏差应严格控制。     

植物生理学实验教学与创新能力的培养

阐述了实验教学在培养大学生创新思维和提高创新能力等方面所起的作用，介绍了在教学过程中所作的尝试。     

Rotor broken bar fault diagnosis for induction motors based on double PQ transformation

A new rotor broken bar fault diagnosis method for induction motors based on the double PQ transformation is pre-sented. By distinguishing the different patterns of the PQ components in the PQ plane,the rotor broken bar fault can be detected. The magnitude of power component directly resulted from rotor fault is used as the fault indicator and the distance between the point of no-load condition and the center of the ellipse as its normalization value. Based on these,the fault severity factor which is completely independent of the inertia and load level is defined. Moreover,a method to reliably discriminate between rotor faults and periodic load fluctuation is presented. Experimental results from a 4 kW induction motor demonstrated the validity of the proposed method.     

Association between SNP rs1800875, serum chymase and immunoglobulin E levels in patients with coronary heart disease

Objective  

The gene for mast cell chymase (CMA1) is an ideal candidate for investigating the genetic predisposition to coronary heart disease (CHD), as activated mast cells have been found to be present in a greater proportion in the shoulder region of atheroma than in normal coronary intimae. Previous studies have indicated that CMA1 promoter polymorphism rs1800875 may be involved in regulating immunoglobulin E (IgE) levels in patients with eczema, and it is associated with the progression of immunoglobulin A nephropathy.     

Genotypic differences in callus induction and plant regeneration from mature embryos of barley (Hordeum vulgare L.)

An efficient induction system and regeneration protocol based on mature barley embryos were developed. Embryos isolated from mature seeds, dehusked by hand and inoculated with longitudinally bisected sections, showed low contamination and high primary callus-forming capability. The influences of nine culture media on primary callus induction and germination from the mature embryos of barley cultivars Golden Promise and Zaoshu 3 were analyzed. The results showed that the two cultivars had much higher values of primary callus induction in the B16M6D medium as compared to the other eight medium formulations, with a frequency of 74.3% and 78.4% for Golden Promise and Zaoshu 3, respectively. Furthermore, Zaoshu 3 demonstrated particularly high stability in callus induction over the different media, indicating its potential utilization in callus induction and regeneration for its good agronomic traits and wide adaption. There were significant differences amongst 11 barley genotypes in terms of primary callus induction in the optimum medium, with percentages of callus induction and germination response ranging from 17.9% to 78.4% and 2.8% to 47.4%, respectively. Green plantlets of Dong 17, Golden Promise, and Zaoshu 3 were successfully developed from primary calli through embryogenesis, with green plant differentiation frequencies ranging from 9.7% to 21.0% across genotypes.     

边界与桥梁:博物馆与全球文化和谐

数十年来,在政治、经济和技术变化支撑下,全球沟通联络越来越多,很多国家重新开始加强边界和国家认同,以便应对真实的和网络的恐怖主义和大规模移民,这些国家变得愈发保守和多疑。博物馆作为建立边界和认同的机构,对预防这种倾向非常关键,通过文化活动和国际展览维持国家之间的良好关系,建立对话平台和沟通的桥梁,促进共同理解,致力于“全球文化和谐”,从不同角度思考文化对于我们理解世界的作用。它涉及最终扫除隐藏于学院学科和艺术、现代化和博物馆等概念中的西方文化帝国主义最后残余。全球性未来关乎对文化与文化产品的本土化理解,关乎对全球文化多元性的更新性欣赏。     

面向认知公差的精密冲压工艺适应性设计方法（英文）

目的:精密冲压工艺过程中环境变量的波动导致工件出现破裂和皱褶等缺陷。探讨精密冲压工艺过程中环境变量(工件材质、冲压速度、压力、模具间隙和温度变化等)对冲压质量的影响,研究适应性工艺设计方法,提高精密冲压工件的质量。创新点:1.通过马尔科夫模型方程,推导出环境变量与精密加工波动公差之间的关系;2.建立试验模型,成功模拟适应性冲压工艺过程。方法:1.通过实验分析,推导出冲压过程中的晶粒流动和强度变化对成型零件的尺寸公差波动产生较大的影响(图2和3);2.通过理论推导,构建环境变量与加工波动公差之间的关系,得到适应性的工艺参数调节方案(公式16);3.通过仿真模拟,运用适应性设计方法在精密冲压过程中对工艺参数进行适应性调节,验证所提方法的可行性和有效性(图5)。结论:1.精密冲压过程中工艺参数需要根据不同的环境变量进行调节;2.环境变量与加工波动公差之间存在映射关系,运用隐马尔科夫模型实现关联表征;3.运用适应性设计方法对精密冲压工艺参数进行调节,加工波动公差明显减小,工件质量得到提高。     

Indirect Searches of Dark Matter in Spacc

Dark matter （DM） is a form of matter necessary to account for gravitational effects observed in very large scale structures such as anomalies in the rotation of galaxies and the gravitational lensing of light by galaxy clusters that cannot be accounted for by the quantity of observed matter （Bertone et al. 2005）. In the standard cosmology model, dark matter, dark energy and normal matter constitute about 23%, 72% and 5% of the energy density of the universe,