Table of Content

25 February 2001, Volume 21 Issue 1

   Next Issue

Criterion for Semisimplicity of an n-Lie Algebra

ZHANG Zhi-xue,LI Hua-jun,YAN Man-fu

2001, 21(1):  3-6.  DOI: 10.3969/j.issn.1000-1565.2001.01.002

Asbtract ( 376 )   PDF (160KB) ( 296 )  

References | Related Articles | Metrics

The authors make a definition of non-degeneracy for the killing form of an n-Lie algebra and prove that an n-Lie algebra is semisimple if and only if its killing form is non-degenerate.The authors also give an example which sho ws that a semisimple n-Lie algebra need not to be a direct sum of simple ideals.

Function Simulation Based on Support Vector Machine

Li Kai,Guo Zi-xue

2001, 21(1):  7-8.  DOI: 10.3969/j.issn.1000-1565.2001.01.003

Asbtract ( 458 )   PDF (83KB) ( 297 )  

References | Related Articles | Metrics

Support Vector Machine (SVM)is an effective and ge neral method for representing complex function in high dimensional space.A nonli near regression algorithm based on SVM is presented to make functi on simulation.

Research on a Solution of Elliptic Boundary Value Problems by Using Theories of Accretive Operators

WEI Li,NAN Shu-qin,LIU Yuan-xing

2001, 21(1):  9-16.  DOI: 10.3969/j.issn.1000-1565.2001.01.004

Asbtract ( 386 )   PDF (392KB) ( 271 )  

References | Related Articles | Metrics

By using the perturbation results on sums of ranges of nonlinear accretive operators of Calvert-Gupta,the authors study the suff icient condition of the existence of the solution of one kinds of nonlinear Neum ann boundary value problem in Lp(Ω)(2≤p<+∞).The equation discussed is more general than that of Gupta-Hess and the equation is discussed in more general space Lp(Ω)(2≤p<+∞)instead of L2(Ω).

Reproducing Kernel Method for Solving Euler Equations

ZHANG Qin-li

2001, 21(1):  17-25.  DOI: 10.3969/j.issn.1000-1565.2001.01.005

Asbtract ( 437 )   PDF (298KB) ( 325 )  

References | Related Articles | Metrics

A new method for calculating Euler equations is presented by means of the theory of reproducing kernel space and finite difference meth od.The results show that the method has much advantages,such as hi gher precision,better stability,less work and other things than any other methods in that the reproducing kernel function has good local property and its derived function is wavelet function.

Some New Criterion of Robust Stability for a Type of Uncertain Time-Delay Systems

HUANG Jing-pin

2001, 21(1):  26-29.  DOI: 10.3969/j.issn.1000-1565.2001.01.006

Asbtract ( 452 )   PDF (152KB) ( 260 )  

References | Related Articles | Metrics

By using the method of constructing positively defin ite matrix,some new results for robust stability of uncertain time-delay systems are derived,and the stability degree is also discussed.As compared with previou s related results,the method in this paper need not to compute norm and minimum eigenvalues of the matrices.

Theorem on Contracting Maps for Halfmetric Space and Exist of Solution on Integral Equation in Orlica Space

SU Yong-fu

2001, 21(1):  30-33.  DOI: 10.3969/j.issn.1000-1565.2001.01.007

Asbtract ( 388 )   PDF (137KB) ( 336 )  

References | Related Articles | Metrics

The author proves theorem on contracting maps for halfme tric space and the existance of solution and the Continuousness of integ ral operator integral equation in Orlica space.

Energy Distribution of Electrons and H Atoms on the Surface of the Substrate during Electron Assisted Chemical Vapor Deposition of Diamond

DONG Li-fang,ZHANG Yu-hong,CHEN Jun-ying

2001, 21(1):  34-37.  DOI: 10.3969/j.issn.1000-1565.2001.01.008

Asbtract ( 454 )   PDF (152KB) ( 332 )  

References | Related Articles | Metrics

Hydrogen dissociation in the process of electron assisted chemicalvap or deposition（EACVD）of diamond thin films is simulated by using Monte Carlomethod. The model of hydrogen dissociation through electron impacting is suggested . The energy distribution of electrons and H atoms on the surface of the substra te are obtained. The results are of great importance to the study of diamond thi n films deposited by EACVD.

Wind Accretion of the System of the Ba Star and the Contamination Factor

LIU Jun-hong,HE Zhong-chi,TIAN Wen-sheng

2001, 21(1):  38-40.  DOI: 10.3969/j.issn.1000-1565.2001.01.009

Asbtract ( 379 )   PDF (138KB) ( 340 )  

References | Related Articles | Metrics

Taking account of δr≠0，through the equation of conservation of orbital angular momentum,orbital parameters equations on the mass change are re-deduced.The equations of the orbital parameters are used to calculate the evolution of the orbital parameters and amount of accreted matter to the Ba stars.The effect of the parameters on the contamination factor are dis cussed.

Effect of Activator and Coactivator on the Luminescence Center of ZnS:Mn,Cu Material

DONG Guo-yi,WEI Zhi-Ren,LI Zhi-qiang,YANG Zhi-ping

2001, 21(1):  41-44.  DOI: 10.3969/j.issn.1000-1565.2001.01.010

Asbtract ( 426 )   PDF (122KB) ( 305 )  

References | Related Articles | Metrics

The effect of Br- and I- on the Mn2+ and Cu+ lumin escence center of Zn S:Mn,Cu*X was investigated. The luminescence spectra and excitation luminescenc e waveform was investigated. We found the evidence effect of Br- on the half life of excitation stater of Mn2+ and Cu+ luminescence center.The lumine s cence intensity of Cu+ green luminescence center increase with Br- increase. The half life of excitation stater of Cu2+ decrease with the Br- increas e.The half life of excitation stater of Mn2+ increase with the Br+ incre ased.

Synthesis of 5,6-Dihydro-2,3-Diphenyl-1,4-Dioxeneand 5,6-Dihydro-2,3-Diphenyl-1,4-Oxathiin under Microwave Irradiation

LI Hui-zhang,YANG Xu-zhe,LI Tong-shuang,WANG Shu-xiang,LI Ji-tai

2001, 21(1):  45-48.  DOI: 10.3969/j.issn.1000-1565.2001.01.011

Asbtract ( 422 )   PDF (140KB) ( 286 )  

References | Related Articles | Metrics

5,6-dihydro-2,3-diphenyl-1,4-dioxene and 5,6-dihydro-2,3-dip henyl-1,4- oxathiin were synthesized by the reaction of benzoin with ethylene glycol or 2-m ercaptoethanol under microwave irradiation. The reaction time was shortened abou t 300-fold and the yields was improved when compaved with classical method.A rapid syn thesis and the mechanism of the reaction has been discussed.

Synthesis of Diacetals from Aldehydes and Ketones with Pentaerythritol Catalysed by TiO2/SO42- Solid Superacid

SUN Xu,WANG Xiao-feng,JIN Tong-Shou,LI Tong-shuang

2001, 21(1):  49-52.  DOI: 10.3969/j.issn.1000-1565.2001.01.012

Asbtract ( 383 )   PDF (135KB) ( 528 )  

References | Related Articles | Metrics

Synthesis of diacetals in 85%～97% yields from aldehydes and ketones with 2,2-bis(hydroxymethyl)propane-1,3-diol is carried out in refluxin g benzene or toluene with TiO2/SO42- solid superacid as catalyst.

Kinetics of Oxidation of Malic Acid by Ditelluratoargentate(Ⅲ) Ion in Alkaline Medium

SHAN Jin-Huan,WANG Li,SHEN Shi-Gang,LIU Bao-sheng,SUN Han-wen

2001, 21(1):  53-56.  DOI: 10.3969/j.issn.1000-1565.2001.01.013

Asbtract ( 429 )   PDF (164KB) ( 334 )  

References | Related Articles | Metrics

The kinetics of oxidation of malic acid by ditell uratoargentate(Ⅲ)ion was studied by spectrophotometry in alkaline medium. The reaction rate sho wed first order dependence on Ag(Ⅲ)and positive fractional order dependence on malic acid.kobs decreased with the increase in ［OH-］［TeO2- 4］ respectively. The active species and a plausible mechanism involving two-electron transfer have b een proposed .All the experimental phenomena can be explained by the rate equa tion derived from the mechanism. The rate constants of the rate-determining ste p together with the activation parameters have also been calculated.

Graft Copolymerization of Methyl Acrylate onto Soluble Starch Initiated with Potassium Diperiodatocuprate(Ⅲ)

LIU Ying-hai,ZHANG Jin-song,LI Wei-ping

2001, 21(1):  57-60.  DOI: 10.3969/j.issn.1000-1565.2001.01.014

Asbtract ( 436 )   PDF (145KB) ( 529 )  

References | Related Articles | Metrics

The graft copolymerization of soluble starch was carried out using potassium diperiodatocuprate(Ⅲ) as the initiator in alkaline medium. It wa s found that Cu(Ⅲ)-starch system was an efficient redox initiator for the graf t copolymerization. The effect of initiator concentration, monomer concentration , reaction temperature on graft copolymerization was investigated. IR and therma lanalysis have determined the structure of the graft copolymer.

Determination of Trace Molybdenum(Ⅳ) by Catalytic Fluorimetric

BAO Suo-yan,LI Shu-cun,WANG Gui-hua,HU Han-fang

2001, 21(1):  61-64.  DOI: 10.3969/j.issn.1000-1565.2001.01.015

Asbtract ( 348 )   PDF (157KB) ( 396 )  

References | Related Articles | Metrics

A new kinetic fluorimetric method was proposed for the determination of trace molybdenum. The method is based on the fluorescence quenching of acridine yellow by the reaction product of hydrogen peroxide and potassium iodide with Mo(Ⅵ) as a catalyst in phosphoric acid solution. The detection limit is 0.15 μg/L. T he linear range of determination is 0.16～2.4 μg/L.The method suffers on interf erences from more than 20 foreign ions. The method has been applied to the deter mination of trace molybdenum in tea, green bean and mineral water samples with s atisfactory results.

Investigation on Montmorillonite-Iron(Ⅲ) Catalyst

WANG Zhong-jun

2001, 21(1):  65-67.  DOI: 10.3969/j.issn.1000-1565.2001.01.016

Asbtract ( 327 )   PDF (104KB) ( 296 )  

References | Related Articles | Metrics

Montmorillonite-iron(Ⅲ)catalyst is prepared.By means of X ray powder diffraction and electron microscope the structural properties of the catalyst a re studied.Fe(Ⅲ) exists in the lager of montmorillonite-iron catalyst.The s tructure of montmorillonite has no change.The quartz composition in the cata lyst is about 22%～24%.The structural defecd of montmorillonite in EC1 and E C 2 is less than that of EC4,EC5 and EC6.The rate of transformation is hig h and the velocity is rapid when EC4,EC5 and EC6 are used as catalysts,at the sa me time the separation is simple and can be used repeatedly.

Study on Cultivation Conditions of Phaeodactylum tricornutum

ZHOU Qiu-xiang,ZHANG De-qiang,SUN Han-wen

2001, 21(1):  68-71.  DOI: 10.3969/j.issn.1000-1565.2001.01.017

Asbtract ( 554 )   PDF (211KB) ( 541 )  

References | Related Articles | Metrics

The cultivation conditions of Phaeod actylum tricornutum , one of ocean microalgae, has been i nvestigated in this paper. It indicates that biomass concentration was 441 mg/L in ten days cultivation period under the following photoautotrophic cultivation conditions: a culture at 20 ℃, the o riginal pH 8.0, No.4 medium, urea as nitrogen source, nitrogen concentration 0.0 1 mol/L. The results show that photoautotrophic growth gives the lower biomass concentration than photoheterotrophy on sugars and P. tricornutum is a good source of EPA. This paper provides a good foundation for the further study of EPA poten tial production of P. tricornutum.

Comparative Analysis of Behaviour Between Ochotona daurica and Ochotona Curzoniae in the Sympatric Coexistence

ZHANG Dao-chuan,FAN Nai-Chang,YIN Hong

2001, 21(1):  72-77.  DOI: 10.3969/j.issn.1000-1565.2001.01.018

Asbtract ( 557 )   PDF (215KB) ( 653 )  

References | Related Articles | Metrics

The sympatric coexistence of Ochotona cu rzoniae and O.daurica was found at Niannosoma area of Gangcha county, Q inghai province (is located 37°10'N. 49°40'E). In this area, we observed the behaviors of two pika species , and carried on a comparative study. 23 kinds of pika's behavior were desc ribed including 9 non-social behaviors and 14 social behaviors.For non-social b ehavior, the pattern of alert behavior of two pika species was different. O.daurica has hoarding behavior. O.curzoniae has mowing behavior ,this is different from those that lives in non-sympatric co-existent areas. 　　Non-social behavior of O.daurica comprised 95.85% of the all obs erved behaviors, non-social behavior of O.curzoniae comprise d 87.41%, the frequency o f non- social behavior was significant difference between two pika species (X 2=7.06,X2＞X20.01). Feeding is the most common non-social behavio r in two pika species. The second is alert behavior. O.curzoniae spent more time in alerting, and O.daurica spent more time in feed ing. 　　Social behavior of O.daurica comprised 4.14% of the all observe d behaviors, O.curzoniae's social behavior comprised 12.59% o f the all observed behaviors . There was significant difference on the frequency of social behavior between two pika species(X2=87.7,X2＞X20.01). O.curzoniae spent more time in social relation of interspecies. 　　In social behavior, affiliative behavior of O.curzoniae is the most common social behavior,it comprised 74.78% of the all observed social behav iors, the second is play-like behavior, the least is aggressive behavior,it com prised 9.90%. On the contrary,aggressive behavior of O.daurica i s the most common social behavior, it comprised 60.81% of the all observed soci al behaviors, the second is affiliative behavior,play-behavior is the least ,it comprised 5.41%. O.curzoniae is more social than O.daur ica, the social degree of O.curzoniae was higher than that of O.daurica, the attack character of individual in O.daurica population was stronger than that in O.curzoniae population.

One New Spider Species of the Genus Gnaphosa (Araneae: Gnaphosidae) from China

ZHANG Jun-xia,SONG Da-xiang

2001, 21(1):  78-79.  DOI: 10.3969/j.issn.1000-1565.2001.01.019

Asbtract ( 523 )   PDF (111KB) ( 293 )  

References | Related Articles | Metrics

The present paper deals with one new species of the family Gnaphosidae belonging to the genus Gnaphosa. Type specimens are deposited in the College of Life Sciences, Hebei University. All measurements given are in millimeters.

Behaviour and Habit of Building Nest of Polistes rothneyi grahmi Vecht

YANG Xiao-feng,REN Guo-Dong

2001, 21(1):  80-84.  DOI: 10.3969/j.issn.1000-1565.2001.01.020

Asbtract ( 790 )   PDF (189KB) ( 973 )  

References | Related Articles | Metrics

The Polistes rothneyi grahmi Vecht is reported about its biological characters in building nest for the first time,including aspects of locating,constructing,ec ological adaptation,nest-building behavior,etc. The Polistes rothneyi is selec tive in the location of its nest, trees and eaves sheltered from the wind and su nlight are the common selections; taking the first four cabinets as basis and co re, the Polistes rothneyi places new cabinets round and round, every cabinet is at the junction of other two cabinets; the shape and construction of the nest of Polistes rothneyi are resulted in the long struggle of survival, adapting to th e natural environment and coordinating with their living activities such as buil ding nests, laying eggs, growing of larvals, pupating, etc.:1) The building of the nest is for the sake of reproduction, so the need in reproduction has great effect on it, that is, the conditions in laying eggs, growing of larvals and pu pating determine the number and size of cabinets;2) The round-shaped, cymbal-li ke structure and the location of eggs in nests reflect the adaptation of surviva l.

Burst-Error-Correcting Software Implementation in the Serial Communication of Single-Chip Microprocessor

WAGN Lan-xun,ZHANG Suo-Liang

2001, 21(1):  85-89.  DOI: 10.3969/j.issn.1000-1565.2001.01.021

Asbtract ( 451 )   PDF (154KB) ( 456 )  

References | Related Articles | Metrics

An burst-error-correcting scheme,which interleavig Hamming coding,for the serial communication of single-chip microcomputer is presented .The advantage of the new mistake control scheme is that the burst-error can be come of random-error and be correctd by using it.

A Algorithm for the Automatic Extracting of Form Characters in Printed Document

TIAN Xue-dong,LI Xin-fu,GUO Bao-lan

2001, 21(1):  90-93.  DOI: 10.3969/j.issn.1000-1565.2001.01.022

Asbtract ( 424 )   PDF (113KB) ( 648 )  

References | Related Articles | Metrics

On the base of the analysis of form's structure, a method with scale-changed connected area feature is put forward used for table extraction. So a researching algorithm of connected area is given, a function o f routing change position is defined for the distinguish of table and graph. And the results of experiment is introduced.

Analysis of Query Method's Performance in the Browser/Server

REN Zhi-bo,BIAN Xiao-fan

2001, 21(1):  94-97.  DOI: 10.3969/j.issn.1000-1565.2001.01.023

Asbtract ( 293 )   PDF (115KB) ( 414 )  

References | Related Articles | Metrics

In B/S model, there are two methods to query database. This paper use dynamic SQL to compare with store procedure, analysing the query efficiency of the two methods and the overload of Web server and sql server . It has value to project design.

Progress of Studies on Polymer Nano-Materials

AN Quan-fu,GAO Jun-gang

2001, 21(1):  98-102.  DOI: 10.3969/j.issn.1000-1565.2001.01.024

Asbtract ( 445 )   PDF (150KB) ( 817 )  

References | Related Articles | Metrics

The preparation and application of polymer nano-materials and polymer/inorganic nanocopomsites are reviewed.