Table of Content

    15 March 2000, Volume 21 Issue 1
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    Key disciplines
    A Study on the Biomass of the Young Plantation of Rhus chinensis and R. punjabensis
    LI Jing, LI Hu-Ming, CHEN Gong-Xi, SHI Jin-Xiao
    journal6, 2000, 21(1):  1-5. 
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    The biomass and its allocation of the young plantation of Rhus chinensis and R. punjabensis was determined with the average standard tree method. According to the data From 22 standard trees of different basal diameter classes, the following regression equations to estimate the biomass of each organs for Rhus chinensis and R. punjabensis were described from single plant : W= aDb, W= a( D2H )b. With signi ficant correlation coefficients 0. 970 0~
    0.998 2, small standard error 0.019 5~ 0.051 3, the equations had practical values. The results obtained showedthat the total biomass the gallaphid summer host plants stand in three- year old is 1 540. 6 g/m2, among which thebiomasses of tree layer , understory layer and litterfall are 1 291.0 g/ m2
    , 157.0 g/ m2, 92. 6 g/m2 respectively. Thebiomass components ratio of each organ is trunk ( 50.7%) > leave ( 20.9% ) > root ( 14.9%) > branch ( 13.5%) .
    Measurement of Nutriments N, P, K and their seasonal changes in Kiwifruit, Actinidia deliciosa cv. Miliang- 1
    LIU Ying-Di, SHI Jin-Xiao, LI Jing
    journal6, 2000, 21(1):  6-10. 
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    The measurement of the nutriments, nitrogen, phosphorus, potassium and their seasonal changes in k-iwifruit, Actinidia deliciosa cv. Miliang-1, was carried in 1996 and 1997. The results showed that the average nitrogen content in root is higher than that in leaf and stem. But the phosphorus and potassium content in is higher than that in root and stem. The seasonal changes of these 3 nutriments content in plant, and relationship between nutriment
    content and soil nutriment supply are also discussed in this paper. Authors considered that the kiwi fruit tested herewas short of nitrogen and potassium supply, and phosphorus supply was sufficient on the whole.
    Extraction and Determination of the Root Hlavone Compound of Xiangxi Rhododendron
    PENG Xiao-Chun, WANG Hui-Xian, LIU Wen-Ping, ZHANG Hui
    journal6, 2000, 21(1):  11-12. 
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    The hlavone compound of Xiangxi Rhododendron can be extracted from its root by ethanol leach, soxhled extraction, isolation and purification. The contents of the total flavonids and oneness were determined by spectrophotometry and PLC. It was shown that total flavonids is 0.189%~0.225% and rutionoside is 3.77~ 3.89  g/ml.
    Doctoral Forum
    Preliminary Study for Numerical Prediction of Disastrous Disturbance Events in Solar-terrestrial Space——Six Step SolutionMethod for Interplanetary Shock Dynamics
    FENG Xue-Shang, WEI Feng-Si
    journal6, 2000, 21(1):  13-17. 
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    The prediction of disastrous space weather is a hot topic among solar-terrestrial physics and high technological fields. We propose that the future forecasting of the physical conditions that the violent solar disturbance causes at the earth by propagating in solar wind depends heavily on the numerical method.This paper analyses the existing problems we are facing in the numerical prediction of disastrous disturbance events in solar-terrestrial space, and then gives some suggestions for future study. For such a purpose, a six step solution method is developed to deal with one-dimensional symmetric interplanetary shock dynamics. It should be point out that that initial ization of fully self-consistent 3-D MHD codes considering the solar-interplanetary- geomagnetic coupled relations with initial-boundary values at 1R of the global output of solar plasma and magnetic field using available solar observations is an essential requirement in space weather operational codes for forecasting purposes.
    Phase Transition in Electrorheological Fluid
    ZHAO He-Ping, LI De-Jun
    journal6, 2000, 21(1):  18-21. 
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    Based on the point- dipole model, we have calculated the free energy of electrorheological fluid by using statitical method. The phase transition from liquid to solid is investigated by considering the osmotic pressure of particles in the suspension. Our results show that the osmotic pressure become negative when the applied field exceeds acritical value Ec and then the liquid experiences a phase transition to a solid phase.
    Mathematics
    On the Degrees of Irreducible Factors of Composite Polynomials
    LE Mao-Hua, LI Zhong
    journal6, 2000, 21(1):  22-24. 
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    Let F be a number field. Let g ( x ) and h( x ) be polynomials over F with the degrees m and n respectively. In this paper we prove that if g(x) is irreducible over F, then the degrees of irreducible factors of the composite olynomial g (h(x) ) over F do not less than m.
    Stability of One-leg Methods of Nonlinear Multi-delays Differential Equations
    WANG Wen-Qiang, XIAO Fei-Yan, LI Shou-Fu
    journal6, 2000, 21(1):  25-29. 
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    In this paper,we gave a sufficient condition of asymptotic stability for nonlinear multi-delays dif ferential equations , and then, we discuss the case of many delays which depends on the base of the part work in the thesis Huang [1] and gain some same results.
    The Prime Powers in Sums of Squares of Two Consecutive Positive Integers
    LI Zhong
    journal6, 2000, 21(1):  30-31. 
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    Let x,n be positive integers, and let p be a prime. In this paper we prove that if p>109 and x2+(x+1)2= pn, then either n= 1 or n= 2.
    On the Prime Divisors of Generalized Mersenne Numbers
    CHEN Rong-Ji
    journal6, 2000, 21(1):  32-33. 
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    Let p be an odd prime, and let a be a positive inte ger w th a> 1.Further let X ( a , p ) = ( ap- 1) / ( a - 1)and Y( a, p ) = ( ap+ 1) / ( a+ 1) . In this paper we prove that if  q= 2p+ 1 is a prime, then q is a prime divisor of X  ( a, p ) or Y( a, p ) according as ( a/ q) = 1 and q a- 1 or ( a / q) = - 1 and q a+ 1,where ( a/ q ) is the Legendre symbol.
    Physics and electronics
    A Genetic Programming Method in Brain Stem Auditory Evoked Potential Test
    BAI Dong-Ya, PENG Hong
    journal6, 2000, 21(1):  34-36. 
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    In this paper, the genetic programming method is proposed for brain stem auditory evoked potential test. Wecons truct the model for brain stem auditory evoked potential test. The experiment has shown the performance of the method that is better than that of tradition method. It can be applied to clinical processes.
    Exact Solutions to Some Coupled Nonlinear Equations
    HU Jian-Lan
    journal6, 2000, 21(1):  37-40. 
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    In this paper , by direct algebraic method and suitable ansatz exact taveling wave solutions are given to some coupled nonlinear equations of physical interest, such as the coupled Zakharov-Kuznetsov and the coupled kadomtsev-Petviashili equations describing the interaction of long nonlinear waves in fluid flows.
    Deformation of Particles Suspended in ER Fluids
    ZHOU Xiao-Qing, WU Yun-Wen, ZHAO He-Ping
    journal6, 2000, 21(1):  41-42. 
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    By using electrodynamics method, research has been into shape change and volume change of particles suspended in ER fluids by electric field and relative rate of change for the volume and shape is calculated, electrodilatancy effect is explained.
    Chemistry and chemical engineering
    QSPR Study on Gas Chromatography Retention Index of Organic Compounds
    LUO Bei-Ping, PENG Xiao-Chun, REN Bi-Ye
    journal6, 2000, 21(1):  43-49. 
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    A colored hydrogen- depleted graph was proposed to replace a molecular graph so as to obtain good discrimination of the complex organic compounds by dyeing both the edges and the vertices. Furthermore, the topological index Xu based on the adjacency matrix A and distance matrix D was derived and further adapted to the multiplybonds,heteroatom-containing compounds by using the related ratio of bond length to C-C bond length in place of the adjacent topological distance and the valence δi  in place of the degree of vertex vi. The index was highly correlated with the gas chromatography retention index of alkanes and cyclanes and alcohols and ketones and esters , and promised to be a useful parameter in the QSPR/ QSAR research.
    Determination of Calcium and Magnesium in Mn3O4 by Flame Atomic Absorption Spectrography
    YAO Jun, MA Ming-You, CHEN Shang, XIAO Zhuo-Bing, QUAN Zhi-Zhong, LI Yu-Lin, ZHANG Yong-Kang
    journal6, 2000, 21(1):  50-51. 
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    The sample of Mn3O4 is digested with HCl, then Lasalt and Srsalt are added as release agents to offset 70 percent of influence of matrix Mn, the contents of calcium and magnesium are determined directively which achieve favorable result. This method proved to be convenient, rapid and exact. The recovery of method is 95. 8%~98. 7% , the relative standard deviation is 2.43%~ 3.28%.
    Micro Mechanisms of Cell Cycle Regulation and Checkpoint Control
    LI Li, HUANG Heng-Yu
    journal6, 2000, 21(1):  52-55. 
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    The present paper study on cell cycle regulation in the course of cell proliferation in eukaryotic cell. The conclusion included the micro mechanisms of cell cycle regulation centres on cyclin- CDKs and the checkpoint control of functional factors on CKI, ATM, p53, Rb . In addition, exogenous signal also act on cell cycle in eukaryotic cell indirectly.
    Scientific research bulletin
    The Parameter Estimation About Reduplication Linear Model
    DUAN Yu
    journal6, 2000, 21(1):  56-57. 
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    In the paper, least squares method is used to estimat the parameter about reduplication linear model. There by the liken and the forecasting precision of the model is enhance.
    The Shape of the Least Energy Solution of Quasilinear Elliptic Equations
    ZENG Xian-Zhong, XIONG Zhi-Guang
    journal6, 2000, 21(1):  58-62. 
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    This paper deals wi th the shape of the least energy solut ion of quasilinear el liptic equations involving criticale xponents- v pu = - Div( | Du|p- 2Du) = Q( x ) | u|p*- 2u+ E | u|R - 1u   x I 8 ,u| 98= 0,where 8 is a bounded domain in RNwith smooth boundary 98, 0< E< K 1, and Ey 0. Q( x ) I C( 8) , RI [ 1, p*) .The fol lowing conclusions are proved:The least energy solution uE of the equat ions satisfies ( after passing to a subse -quence) :| DuE |p   w  Q-N- ppm   SNpDx 0, as Ey 0, in the sense of measure.| uE |p*   w  Q-Npm   SNpD x0, as Ey 0, in the sense of measure.Where Qm= maxx I 8Q( x ) = Q( x 0) , D x 0 be the Dirac mass at x 0, S is the bes t Sobolev cons tant.
    Design and Implementation of New Pattern System of Automatic Obtainning and Dealing with Network Information
    XIE Yi-Chen
    journal6, 2000, 21(1):  63-66. 
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    This paper introduces a design and implementation of new pattern system of automatic obtainning and dealing with newtork information. From the two ways of improving efficiency and saving network traffic, analyses this system's characteristic and used technology.
    Characters of Measurable Field in Harmony π Spaces
    YU Xue-Jiang, YANG Hai-Tao
    journal6, 2000, 21(1):  67-68. 
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    In this paper, two characters of measurable field of harmony π spaces are obtained.
    Semi-open Sets and Semi-Continuity in Intuitionistic Fuzzy Special Topological Spaces
    YANG Xin-Mei
    journal6, 2000, 21(1):  69-72. 
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    The notions of semi-open sets and semi-continuity in intuitionistic were introduced, their some properties were obtained: an intuitionistic fuzzy special set is an intuitionistic fuzzy special semi-open set if and only i f A  cl [ int ( A) ] , Ai : i∈I be an arbitrary family of IFSSOS's , then O is an I FSSOS, Let A  Y ~ X ~and A is an IFSSOS in(X , σ) , then A is an IFSSOS in ( Y, φ); Continucty implies semi-continuity but not conversely, Strongly semi-continuity implies semi-continuity but not conversely,The function f : X  Y is semi-continuous  f and only if for f ( x ) O, O is an IFSSOS in Y there exis ts and IFSSOS A in X such that x ∈A and f ( A )  O,The function f : X→Y is strongly semi- continuous if and only if the preimage of each IFSSCS in Y IFSSCS in X .
    Discuss for Experimental Conditions to  Fuse of  C10H8
    WU Yun-Wen, ZHOU Xiao-Qing, XIAO Guang-Wen, ZENG Qing-Li, LIU Sheng-Chang
    journal6, 2000, 21(1):  73-77. 
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    In this paper, by means of researches for experimental conditions to fuse of C10H8, obtain a better method of experiment, experimental results accord with theory.
    Improve on Method of Separation and Synthesis of 4- Hydroxyphenyl- 21H, 23H- Porphine
    OUYang-Yu-Zhu , PENG Qing-Jing, ZOU Xiao-Yong
    journal6, 2000, 21(1):  78-81. 
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    Method of separat ion of a hydroxyphenyl- 21H, 23H- porphine[ 5- ( 4- hydroxyphenyl) - 10, 15, 20-triphenyl- 21H, 23H- porphine( H2TPPOH) ] and many hydroxyphenyl- 21H, 23H- porphine[ 5, 10- di( 4- hydroxyphenyl) - 15, 20- diphenyl- 21H, 23H- porphine( H2TPP( OH) 2) ; 5- phenyl- 10, 15, 20- tri( 4- hydrox yphenyl) - 21H, 23H- porphine( H2TPP( OH) 3) ] was improved.The results showed that in the course of separating all kinds of hydroxyphenyl porphine, by the new method, the separate efficiency and product purity were better, the using amount of eluant was less and the column separation times was shorter. In addition, the influence of the ratio of reactants, drop speed of pyrrole solution and operational method on the yield of synthesing all kinds of hydroxyphenyl porphine were inves  tigated,wi th 3:1. 05:4( C6H4CHO: HOC6H4CHO:C4H5N, mole ratio) , drop pyrrole solution in 3 minutes and strong motor stir, the yield of the H2TPPOH was increased.
    Extraction of Setcreasea Purpurea Pigment and Its Stability
    WU Zhu-Qing
    journal6, 2000, 21(1):  82-83. 
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    The extraction technology of natural pigment from Setcreasea Purpurea was studied in this paper. The physicochemical properties of the pigment were discussed. It is provided on some theoretical bases and technical data for the extraction and application of the pigment.
    Advance in Research of Epimedium L. Ecophysiology
    SHI Jin-Xiao, LI Hu-Ming, LIU Ying-Di, CHEN Jun
    journal6, 2000, 21(1):  84-85. 
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    Here is a review of ecophysiological researches of Epimedium L . in this paper.The literature in last 10 years in this field is very poor.The achievements only include the differentiation in flavonoids contents andmorphological discrepancies of different species, or morphological discrepancies and different contents of the same species from di fferent producing areas and with dif ferent phenological characteristics , ect. The authors suggest that it is need to study physiology and ecophysiology of Epimedium L . , and to establish theoretical foundation for continually exploiting-utilizing and cultivating.
    The Study on the Culture of Tulipa gesneriana in Xiangxi Area
    HUANG Heng-Yu, LI Li, LIU Guo-Chen, YANG Sheng-Hui
    journal6, 2000, 21(1):  86-88. 
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    The present paper through studying on introduced 4 variet ies of Tulipa gesneriana at E. R. I. of Jishou university, research some questions that will appear in the course of culturation and try to resolve them in Xiangxi area.
    Mathematics
    Sustainable Development in Ecological Forest
    LI De-Xiang
    journal6, 2000, 21(1):  89-91. 
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    Natural resources are the base of the forest and the motive force for the sustained growth of the forest. The coordinated growth among population, resources, enviroment and ecological forest serves our purpose harmoniously,which is an inexorable trend for our society's development.
    Scientific research bulletin
    The Clinical Significance of Abnormalities in NST Monitoring
    ZHANG Feng-Jin, CHENG Qiu-Rong
    journal6, 2000, 21(1):  92-94. 
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    To explore the clinical significance of NST ( non-stress test) monitoring in fetal heart rate.Method 60 cases of abnormal NST monitoring graphs indicating fetal distress were undergone cesarean section, and the abnormal finding during the operation. Result ( 1) Transient deceleration or scatlered deceleration was mainly seen in oligohydramnios( 55%, 30%) . ( 2) Transient acceleration was mainly due to corproblems ( 83.3% ) . ( 3) Low feasibility of the baseline, especially the flat types, was a demonstration of fetus oxygine lackage. ( 4) In the cases of combined pattern of deceleration and acceleration, prolapse of cord was suggested. Conclusion the abnormalities in fetal heart rate monitoring with non-stress test indicated high risk factors and close attention must be paid to these fetuses.
    Surgical Treatment of Aged Carcinoma of Esophagus and Carcinoma of Cardia
    NIE Xiang-Yang, LI Qing, HUANG Yong, ZHOU Gui-Lin, GU Yue-Qi
    journal6, 2000, 21(1):  95-96. 
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    Aim: to review the surgical experience in treatment of aged carcinoma of esophagus and carcinoma of cardia. Clinical material and method: there were twelve aged patients who all as sociated multiple systems abnormal including respiratory system, cardiovascular system and malnutrition. 10 patients underwent tumour excision ( radical cure and conservat ive cure) , and 2 patients underwent ascertainment. Result: there were no operative deaths. The operation excision rate is 83.33% , and 3 partients had postoperative complications. Conclusion: senility is not the contraindication of operation. To aged patients, the treatment in perioperative is important and the disease of respiratory system and malnutrition should be improved before operation.And efficient management to airway and sustaining nutrition can reduce the postoperative compoications. So the postoperative evaluation to aged carcinoma of esophagus and carcinoma of cardia patients,we not only think much of the survival rate, but also the survival quality.
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