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Soil Organic Carbon,Carbon Fractions and Nutrients as Affected by Land Use in Semi-Arid Region of Loess Plateau of china

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Pedosphere 2010年第2期20卷 146-152页

作者： LIU Xun,LI Feng-Min,LIU Da-Qian and SUN Guo-Jun Key Laboratory of Arid and Grassland Ecology of the Ministry of Education,school of Life Sciences,Lanzhou university,Lanzhou 730000 (china) [a] Key Laboratory of Arid and Grassland Ecology of the Ministry of Education School of Life Sciences Lanzhou University Lanzhou 730000 (China)

Cropland (CP),native grassland (NG) and two shrub land treatments which were converted from cropland in 1985:seabuckthorn (Hippophae rhamnoides L.) (ST),and branchytamarisk (Tamarix ramosissima) (BT) were investigated to evaluate effects of land use conversion on soil organic carbon (SOC) and soil nutrients in the semi-arid region of the Loess Plateau of *** organic carbon (TOC),light fraction organic carbon (LFOC),heavy fraction organic carbon (HFOC),total N (TN),nitrate nitrogen (NO 3-N) and nitrite nitrogen (NO 2-N),ammonium nitrogen (NH + 4-N),total P,and available P (AP) were *** results showed that SOC in NG,ST and BT were 12.7%,27.7% and 34.8% higher than that of the cropland,***,light fraction (LF) dry matter,ratio of TOC to TN (C/N) and the ratio of TOC to AP (C/P) were higher in the shrub land or native grassland than in the *** had the highest TN,the sum of NO 3-N and NO 2-N,TP and AP due to the use of chemical *** significantly correlated with LFOC,HFOC and C/*** significantly correlated with dry matter of the LF and C/***,the sum of NO 3-N and NO 2-N and AP were significantly negatively correlated with TOC and ***,land use conversion from cropland to shrub land,or maybe grassland,contributed to SOC sequestration and improved soil nutrients stabilization.

关键词： cropland heavy fraction organic carbon light fraction organic carbon native grassland shrub land

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一种新的基于插件和脚本的远程控制构架设计

武汉理工大学学报 2009年第11期31卷 109-112页

作者：赵斌夏红霞张皓宋华珠武汉理工大学计算机科学与技术学院武汉430070

针对传统的远程控制软件耦合度高、不易扩展等缺点,给出了一种新的脚本驱动的插件式远程控制系统开发构架。它使用插件技术作为设计框架,利用统一的接口屏蔽平台间的差异,通过脚本语言驱动功能插件,降低了系统的耦合度,并提高了系统可... 详细信息

针对传统的远程控制软件耦合度高、不易扩展等缺点,给出了一种新的脚本驱动的插件式远程控制系统开发构架。它使用插件技术作为设计框架,利用统一的接口屏蔽平台间的差异,通过脚本语言驱动功能插件,降低了系统的耦合度,并提高了系统可配置性。通过C++和Lua实现该构架的原型,验证了该构架的合理性和有效性。

关键词：远程控制插件框架脚本语言面向服务架构

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唐诗中凤凰意象的世俗化和唯美化

四川大学学报（哲学社会科学版） 2001年第5期 64-69页

作者：李虎子中南民族学院文学院硕士生湖北武汉430073

商周龙凤的整体形象是威严和神异 ,与龙的这一形象不断得到强化相反 ,凤凰的神异和威严却慢慢消失 ,从祥瑞、凤喻人和唐人生活中的凤凰三个方面复原唐诗中的凤凰形象。

关键词：凤凰意象世俗化唯美化文学研究唐代诗歌

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论电子商务消费者个人信息及其保护

图书情报工作 2009年第8期53卷 130-133页

作者：徐敬宏文利民北京邮电大学人文学院北京100876 武汉大学经济与管理学院武汉430072

介绍电子商务消费者个人信息,包括消费者个人基本情况信息、个人网络活动信息和个人网络空间储存的信息;对消费者个人信息的侵害主要表现为非法收集和非法利用电子商务消费者个人信息。消费者个人信息安全主要体现在消费者对自己的个人... 详细信息

介绍电子商务消费者个人信息,包括消费者个人基本情况信息、个人网络活动信息和个人网络空间储存的信息;对消费者个人信息的侵害主要表现为非法收集和非法利用电子商务消费者个人信息。消费者个人信息安全主要体现在消费者对自己的个人信息拥有如下权利:消费者个人信息收集的知情权、个人信息收集的选择权、个人信息的控制权、个人信息安全的请求权和个人信息使用的限制权。指出保护电子商务消费者个人信息,需要建立起消费者的自我保护、行业自律和法律规制三道防线。

关键词：电子商务消费者消费者个人信息个人信息安全

A New Method for Reducing Commutation Torque Ripples in BLDC Motors

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Journal of Shanghai university(English Edition) 2001年第1期5卷 71-75页

作者： ZHANG Xiang jun, CHEN Bo shi school of Electromechanical Engineering and Automation, Shanghai university, Shanghai 200072, china ost.tau.ac.il

A new compensation method and an algorithm for compensating for the commutation torque ripples of the trapezoidal EMF brushless DC motor are put forward. Simulation and experimental results show that this method is co... 详细信息

关键词： sensorless drive trapezoidal EMF brushless DC motor commutation torque ripple

Kinematic Analysis of Mobile Manipulator for Measurement and Maintenance in Dangerous Environment

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武汉理工大学学报 2006年第S3期28卷 983-988页

作者： CUI Genqun LI Chunshu ZHANG Minglu school of Mechanical Engineering,Hebei university of Technology,Tianjin 300062,china, school of Mechanical Engineering Hebei University of TechnologyTianjin 300062China

This paper studies the kinematic modeling of a mobile manipulator that consists of 5-DOF manipulator and an autonomous wheeled mobile *** an artificial neural network to realize the coordination motion between manipulator and mobile platform is *** the basis of the task specifications,the algorithm determines the appropriate control variables to respond to the well tracking *** control strategy employed for either subsystem is achieved by using a robust supervised controller.A learning paradigm is used to produce the required reference variables for an overall cooperative behavior of the sys- *** results are presented to show the effectiveness of this approach.

关键词： mobile manipulator kinematics analysis nonholonomic constraints cooperative behavior artificial neural network

Serviceability and Reinforcement of Low Content Whisker in Portland Cement

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Journal of wuhan university of Technology(Materials Science) 2011年第4期26卷 749-753页

作者：曹明莉 school of Civil Engineering Dalian University of Technology

In order to explore the serviceability and reinforcement of CaCO3 whisker in portland cement matrix, the durability of CaCO3 whisker and effect of low whisker content（0%-4.0%） on the working performance and mechanical properties of portland cement were investigated. The experimental results show that CaCO3 whiskers have a good stability and serviceability in cement, and should not significantly alter the rheological properties of the cement paste. The flexural and compressive strength of portland cement reinforced by CaCO3 whiskers was increased by 33.3% and 12.83%, respectively.

关键词： CaCO3 whisker portland cement serviceability workability reinforcement

Protection of Human Rights Under china's Legal System——An interview with Prof. Wan Exiang

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The Journal of Human Rights 2005年第1期4卷 8-11页

作者： Wang Kongxiang, Xuan Hailin are PhD candidates at the Law school of wuhan university, and Gu Shengkai is a staff reporter of the Human Rights magazine. Law school of wuhan university Human Rights magazine

Wan Exiang, professor of the Law school of wuhan university, doubles as justice and vice-president of china's Supreme People's Court. He is also vice-chairman of the Revolutionary Committee of the Chinese Kuomintang, one of the democratic parties in china, and member of the Tenth National Committee of the Chinese People's Political Consultative Conference, china's highest consulting body. Prof. Wan is reputed in china and abroad for his achievements in study of international human rights laws and also as the founder of the wuhan university Center for Protection of the Rights of the Underprivileged in Society, the first of its kind ever set up in the country. Since its founding a decade ago, the center has won a fame for the quality legal services it renders to needy people in their tens of thousands, including disabled people, juveniles, women and workers laid off from state-owned enterprises in the course of china's economic restructuring. While a press favorite at home, the center has received coverage by the NHK TV of Japan, Washington Post of the United States, Phoenix TV of Hong Kong and numerous other media outside the Chinese mainland. Following is an interview with Prof. Wan Exiang, in which he discussed how human rights are protected under china's legal system and in what ways the system should be improved.

关键词： An interview with Prof view Protection of Human Rights Under china’s Legal System Wan Exiang

Wavelength Channel Bandwidth of Wavelength-Selective Devices

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Journal of Shanghai university(English Edition) 2001年第1期5卷 48-52页

作者： XIAO Yan ping, WU Ya ming school of Communication and Information Engineering, Shanghai university, Shanghai 200072, china school of Communication and Information Engineering Shanghai University Shanghai China

Narrow bandwidth is a crucial factor in a high performance wavelength selective device(WSD). There are many different expressions to estimate bandwidths of many different WSDs. In this paper, we derive an important rule that the differential time delay between two coupling modes is the most important factor deciding the wavelength channel bandwidth for several different WSDs. This rule reveals that larger differential time delay between two coupling modes results in higher discrimination level of the operating wavelength. Based on the rule, a novel design of wavelength selective coupler that has a bandwidth narrower than normal couplers is presented.

关键词： wavelength channel bandwidth wavelength selective device(WSD) differential time delay