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Studies of isolation and structural characterization on a polysaccharide from Serissa serissoides (DC.) Druce

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Studies of isolation and structural characterization on a po...

A Communication Protocol and Monitoring Policy for Input/Output Vehicles in an Automatic Storage and Retrieval System

中国化学会第十四届有机分析及生物分析学术研讨会

作者： HUANG Mei-yan~1 WEI Wan-xing~(*2) (1.College of Chemistry and Chemical Engineering,Guangxi University,nanning 530004 2.Medical Scientific Research Center,Guangxi Medical University,nanning 530021)

Serissa serissoides(DC.) Druce polysaccharide (SSP) was first isolated from Serissa serissoides (DC.) *** polysaccharide was consisted of glucose and man- nose *** of the polysaccharide was determined by means of UV,IR,GC, methylation and *** results indicated that SSP has a main chain a-D-(1→4)- glucosan,and branches α-D-(1→3)-Mannosan,α-D-(1→6)-Mannosan,α-D-(1→2)- Mannosan,linked to the main chain at O-6.

关键词： Serissa serissoides(DC.)druce Polysaccharide Structural analysis

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武汉理工大学学报 2006年第S2期28卷 538-542页

作者： LI Li~1 LI Wenfeng~2 LIAO Xiaoping~1 SU Wengui~1 LIN Yizhong~1 1.School of Mechanical Engineering,Guangxi University,nanning 530004,China 2.College of Logistics Engineering,Wuhan University of Technology,Wuhan 430063,China School of Mechanical Engineering Guangxi UniversityNanning 530004China College of Logistics Engineering Wuhan University of TechnologyWuhan 430063China

The acquisition and processing of equipment information is pivotol to control and management of the automated storage and retrieval *** work of this paper is based on the automatic storage and retrieval experimental system of Wuhan University of ***,the output/input flow and the control information of storage/retrieval vehicle are studied and the plotting finite state machine model of the stacking crane is ***,the communication protocol between the center con- trol management computer and the PLC of stacking crane is ***,the stacking crane’ s monitoring data,which in- clude operating time,running states and real-time position status,are gained by analyzing the communication *** de- tailed program for the acquisition and processing of monitoring information is *** method is suitable for the equipment monitoring of the whole system,and provides a platform for studying the intelligent control and optimal scheduling strategies of AS/RS.

关键词： AS/RS stacking crane protocol finite state machine

Promoting Autonomous Learning In Institutions of Higher Learning in the Chinese Context

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玉林师范学院学报 2001年第2期22卷 96-101页

作者： CHEN Qun1 CHEN Yong_fu2 (1,2.M.A., University of Brighton, UK Lecturer, Guangxi University, nanning, Guangxi, China 530004) University of Brighton UK Guangxi University NanningGuangxiChina530004

In recent years, autonomous learning that centres on the learner is getting increasing interest in institutions of higher learning in China. This paper is an attempt to examine why the teachercentred approach that often produces unsatisfactory results is widely employed in the country. It also presents the rationale and discusses how both Chinese teachers and learners could do to make autonomous learning effective. The authors stresses that the learner should set his/her goals（s）, plan the workframe and carry out his/her learning accordingly whilst the teacher should undertakes proper monitoring and evaluation. The authors hold that the learner's age, aptitude and intelligence, motivation, personality, cognitive and learning styles deeply influence autonomous learning. As most Chinese learners of FL may like to work independently rather than collaboratively, this might adversely affect their autonomous learning.

关键词： autonomous learning factors monitoring evaluation

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支持工程合作设计事务的扩充分层封锁机制

计算机工程与应用 2002年第7期38卷 47-49页

作者：李陶深廖国琼广西大学计算机与信息工程学院南宁530004

简单读/写锁模型对工程合作设计事务支持较弱。该文结合工程数据库的层次性,提出了基于2PL的扩充分层封锁机制,能够较好地支持工程合作设计事务的进行和提高事务的并发度。

关键词：工程数据库设计事务并发控制分层封锁相容性矩阵工程合作

The Influence of Free Water Content on Dielectric Properties of Alkali Active Slag Cement Paste

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Journal of Wuhan University of Technology(Materials Science) 2007年第4期22卷 774-777页

作者：李继忠 University of Science and Technology Beijing Beijing Urban Construction Group Co. LtdConcrete Branch CompanyBeijing 100039China

The dielectric performance of alkali activated slag （AAS） cement paste was investigated in the frequency range of 1 to 1000 MHz. The experimental results showed the unstable dielectric properties of harden paste were mostly influenced by the fraction of free water in paste or absorbed water from ambient, but not including hydration water and microstructure. The free water was completely eliminated by heat treatment at 105 ℃ about 4 hours, and then its dielectric loss was depressed; but with the exposure time in air increasing, the free water adsorption in ambient air made the dielectric property of harden cement paste to be bad. The temperature and relative humidity of environment was the key factors of free water adsorption; hence, if the influence of free water on dielectric constant was measured or eliminated, the cement-based materials may be applied in humidity sensitive materials or dielectric materials domains.

关键词： alkali activated slag cement (AASC) dielectric constant dielectric loss relative humidity free water adsorption

Investigation on the 773 K isothermal section of La-Fe-Sn ternary systems by X-ray powder diffraction

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Rare Metals 2010年第6期29卷 567-571页

作者： CHEN Xiang ZHUANG Yinghong CHEN Yungui Key Laboratory of Nonferrous Metal and New Processing Technology of Materials (Ministry of Education of China) Guangxi University Nanning 530004 China Department of Physics and Electronic Information Engineering Neijiang Teachers College Neijiang 641002 China Department of Metallic Materials Engineering Sichuan University Chengdu 610065 China

The 773 K isothermal section of the La-Fe-Sn ternary system was investigated and constructed by X-ray powder diffraction（XRD）.The existence of two reported ternary intermetallic compounds,La6Fe13Sn and La3FeSn6,is confirmed in this *** with other R-Fe-Sn phase diagrams（R = Pr and Sm）,the binary alloys Fe3Sn and Fe5Sn3 are not *** compound Fe3Sn2 was observed from the XRD pattern of Fe3Sn2 samples,but it is not an equilibrium phase at 773 K and decomposes into Fe and FeSn phases completely for a longer heat treated *** to now,the crystal structure data of La2Sn3 has not been reported,so the X-ray pattern of La2Sn3 was only *** phase relationship for this compound was drawn by a dotted line.

关键词： intermetallics quenching phase diagrams X-ray diffraction.

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天然甜茶保健饮料加工技术的研究

食品科技 2002年第4期27卷 50-52页

作者：李秋庭广西大学生物糖业工程学院南宁530005

研究了天然甜茶保健饮料的生产工艺,并着重研究了最佳浸提条件及如何解决天然甜茶保健饮料产生混浊沉淀、色泽褐变、风味改变等问题。研制出色泽清亮、香气宜人、甘甜清凉可口的天然无糖保健饮料。

关键词：天然甜茶保健饮料生产工艺浸提条件稳定性品质控制

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广义双线性系统的镇定

陕西师范大学学报（自然科学版） 2002年第3期30卷 1-4页

作者：梁家荣广西大学计算机与信息工程学院广西南宁530004

通过引入E 渐近稳定性的概念 ,利用Liapunov方法研究广义双线性系统 ,设计了一个镇定控制器 ,保证闭环系统E 渐近稳定和Liapunov意义下渐近稳定 .作为应用。

关键词：广义双线性系统 Liapunov函数渐近稳定镇定控制器 Liapunov方法 E-渐近稳定性

GRB 090423:Marking the death of a massive star at z=8.2

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Science China(Physics,Mechanics & Astronomy) 2010年第S1期53卷 64-68页

作者： LIN Lin1,LIANG EnWei2 & ZHANG ShuangNan3 1 Department of Physics and Center for Astrophysics,Tsinghua University,Beijing 100084,China 2 Department of Physics,Guangxi University,nanning 530004,China 3 Key Laboratory of Particle Astrophysics,Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China Department of Physics and Center for Astrophysics Tsinghua University Beijing China Department of Physics Guangxi University Nanning China Key Laboratory of Particle Astrophysics Institute of High Energy Physics Chinese Academy of Sciences Beijing China

GRB 090423 is the new high-z record holder of Gamma-ray bursts(GRBs) with *** present a detailed analysis of both the spectral and temporal features of GRB 090423 observed with Swift/BAT and Fermi/*** find that the T90 observed with BAT in the 15-150 keV band is 13.2 s,corresponding to-1.4 s at z=*** once again gives rise to the issue of whether the progenitors of high-z GRBs are massive stars or mergers since the discovery of GRB 080913 at z=*** comparison with the T90 distribution in the burst frame of the current redshift-known GRB sample,we find that it is marginally grouped into the long group(Type II GRBs).The spectrum observed with both BAT and GBM is well fitted by a power-law with exponential cutoff,which yields an Ep=(50.4±7.0) *** event satisfies the Amati-relation well for Type II GRBs within their 3σ uncertainty *** results indicate that this event would be produced by the death of a massive *** on the Amati-relation,we derive its distance modulus,which follows the Hubble diagram of the concordance cosmology model at a redshift of-8.2.

关键词： gamma-ray bursts high energy phenomenon cosmology