狗血浆中哌唑嗪的含量测定方法及其在药代动力学中的应用

建立并评价了一种简单灵敏的方法测定狗血浆中PZS的含量.该方法利用HPLC-FLD结合乙醚萃取的前处理方法,采用C18色谱柱(150 mm×4.6 mm,5 μm),流动相为30％乙腈和70％乙酸-乙酸钠缓冲液(pH=3.6),荧光检测器的激发波长为258 nm,发射波长为387 nm,在流动相流速为1.0 mL/mi...     

利用语义约束实现用户个性化的服务组合算法

为了提高服务组合的质量和效率,提出了一种基于语义约束的服务组合算法.算法中,首先利用2层语义匹配算法对用户需求和服务库中的服务进行比较,利用用户约束性个性化需求对符合匹配的服务进行筛选,从而在第一时间缩小了服务组合算法执行过程中服务的搜索空间,然后对候选的服务组合组件进行用户趋向性个性化需求计算,选择其中最符合用户个性化需求的服务构成最终的服务组合.通过仿真实验证明,该算法有效提高了服务组合算法的运行效率,并且保证了用户的个性化需求得到最大满足.     

美国华盛顿大学研究生培养对交通运输工程学科的借鉴

对美国华盛顿大学研究生培养的特色进行了总结和介绍,按照“如何做研究-研究选题-研究方法-成果展示”四个步骤进行了详细阐述。为提高交通运输工程学科研究生的培养质量,从引入《Transportation Seminar》、学科交叉培养、出国交流、课程设置和面对面讨论5个方面进行了具体讨论,以期为交通运输工程学科研究生培养提供借鉴和参考。     

风雨耦合作用下的城市道路行车风险评估

从道路条件、天气条件和设施条件3个方面选取18个影响因素,基于DAMATEL方法,建立直接影响矩阵并规范化,获得综合影响矩阵,得到三层次风雨耦合作用下的城市道路风险评估体系,结合模糊综合评价以及层次分析法确定各级评价指标的权重,建立了一个相对完整的评价体系,并将其应用于当地的风险评估中,为当地的交通管理控制以及降低行车风险提供了一定的理论参考。     

应用健康信念模式提高大学生体育锻炼的参与性

目的:应用健康信念模式教育对大学生体育锻炼的态度和大学生参与体育锻炼的积极性进行调查研究.方法:选取2012级排球班学生90名.分为实验组45名,对照组45名.实验组运用健康信念模式进行健康教育干预,对照组按常规方式进行健康教育.干预前后对两组进行统计分析.结果发现,进行健康信念模式教育的学生对体育锻炼的态度和体育锻炼的依从性与常规教育方式相比,都具有显著性差异(p<0.05).结论,应用健康信念模式教育可明显提高大学生对体育锻炼的态度,提高大学生参加体育锻炼的依从性.     

Deterioration of Yungang Grottoes: Diagnosis and research

Yungang Grottoes, in Datong City of Shanxi Province, China, as the state-level key cultural relic preservation organ, have been subjected to severe degradation due to natural and human factors over the years. Since January 2010, site investigation and research on Yungang Grottoes, assisted by the Xi’an Relics Protection Center and Yungang Grottoes Cultural Research Institute, have been carried out in the laboratory of cultural relics conservation materials in Zhejiang University. Our investigation of the deterioration characteristics of these grottoes is presented here. The paper describes about 12 types of diseases in detail represented by dust deposit, salt crystallization and black crust. Relevant samples have been collected and analyzed by means of SEM, FT-IR, XRD and EDAX to study the potential hazard to the sandstones and conservation methods, which could be used to help guide remediation efforts directed at reducing the weathering problem.     

Premier Wen Jiabao Visits China Culture Center in Cairo

On December 7, 2009, visiting Chinese Premier Wen Jiabao visited China Culture Center in Cairo, Eygpt and granted awards to nine Egyptians who had made outstanding contribution to China-Egypt cultural exchange, it was the first time that Chinese state leaders visited this cultural center since its inauguration 8 years ago.     

Fear as political dynamics: Chinese peasant workers’ struggle over social security

This article attempts to understand the subject formation of Chinese peasant workers by exploring the emotional dynamics of their struggle for social security, in particular, the new political possibilities created by emotional forces, and the complex ways they experience and articulate the distinctive kind of emotional politics that binds peasant workers with the state in their co-production of emotionally charged power relations, identities, and subjectivities. It formulates an analytical framework that explores the emotional politics of fear that plays out in the context of economic restructuring. In contemporary China, the conflict triggered by social insurance contributions has become a component of the ensuing social crisis, where many protest events are triggered by widespread outrage at the violation of legal rights to social insurance and other welfare security. This research focuses on the struggle of a group of peasant workers at a UNIQLO supplier in Shenzhen, exploring how their fears for the future are constituted, and how their emotional feelings of insecurity motivate collective action and reconfigure their emotional identity and subjectivity in the face of extreme risk. Informed by a relational understanding of emotions, this paper investigates the complex ways in which the proliferation of fear, as a result of an anticipated pain in the future, articulates the process of subject-making in the face of increasing instability and precarity. The study attempts to demonstrate the centrality of fear for China’s sociopolitical order and the radical action of labor resistance.     

Accurate and broadband manipulations of harmonic amplitudes and phases to reach 256 QAM millimeter-wave wireless communications by time-domain digital coding metasurface

We propose a theoretical mechanism and new coding strategy to realize extremely accurate manipulations of nonlinear electromagnetic harmonics in ultrawide frequ...     

甘肃省业余羽毛球运动员后场正手击高远球的运动学分析

运用文献资料法、三维影像分析测试和图像分析法、数理统计和综合分析法,对甘肃省业余优秀羽毛球运动员后场正手击高远球技术的参数进行分析.结果显示:甘肃省业余羽毛球运动员的肌肉质量和力量在竞技对抗能力上处于劣势.通过相关性检验,发现准备阶段、引拍阶段是影响甘肃省业余羽毛球运动员整体技术的关键阶段.准备阶段肘关节角度直接影响挥拍阶段顶肘、吊拍的动作衔接;引拍阶段躯干扭转角度小影响腰腹背肌肌力的储备量;挥拍击球阶段动作基本符合“鞭打”的原理;随前阶动作还原速率过慢,影响下一次动作的准备.因此建议甘肃省业余优秀羽毛球运动员应注重专项力量和身体灵活性的训练,来弥补先天身体形态上的不足;应依据身体形态的指标选拔优秀苗子,把培养甘肃省青少年羽毛球后备力量作为一个长期阶段性的目标;以专业运动员技术动作的关节角度为标准,学习、纠正和完善自身动作,保证技术动作的合理掌握和运用,从而有效提高甘肃省各年龄段业余羽毛球运动的整体水平.