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Table of Content
25 May 2002, Volume 22 Issue 2
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Some Results on the n - Lie Algebras
2002, 22(2): 105-108,113. DOI:
10.3969/j.issn.1000-1565.2002.02.001
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The authors studied some properties on n + 1 dimensional n - Lie algebras, and we proved that when dimension of dim A 1> 1, the dimension of Cartan subalgebra of A is n - 1. And also proved that n + k dimensional n - Lie algebra is simple if and only if it has not ideals that the dimension are not more than k and A = [ A A ], and other results about Cartan subalgebras of n - Lie algebras.
Enterprise Optimum Decision Model for Developing New Products
2002, 22(2): 109-113. DOI:
10.3969/j.issn.1000-1565.2002.02.002
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Oscillation Theorems of Second Order Nonlinear Differential Equations
2002, 22(2): 114-117. DOI:
10.3969/j.issn.1000-1565.2002.02.003
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The authors discuss a class of second order nonlinear differential equations. By using the generalized Riccati transformation and the integral averaging technique, new osciallation criteria are obtained for all solutions of the equations to be oscilltory. Our results generalized and extend some known oscillation criteria in the literature.
Three-dimensional Reconstruction of Vascular Slice
2002, 22(2): 118-123. DOI:
10.3969/j.issn.1000-1565.2002.02.004
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Research on Mechanism of Spatial Diffusion of Technological Innovation
2002, 22(2): 124-128. DOI:
10.3969/j.issn.1000-1565.2002.02.005
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Analysis of the Pattern Formation in Dielectric Barrier Discharges by Spatial Correlation Function
2002, 22(2): 129-132. DOI:
10.3969/j.issn.1000-1565.2002.02.006
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KF/Al2O3 Induced the Condensation of Aromatic Aldehydes with Acetophenone in Ethanol under Ultrasound
2002, 22(2): 133-135. DOI:
10.3969/j.issn.1000-1565.2002.02.007
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Synthesis of Polystyrene Telechelic Prepolymer with Chloroacetic Acid/Ferrous Chloride - hydrogen
2002, 22(2): 136-140. DOI:
10.3969/j.issn.1000-1565.2002.02.008
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Study on Thermal Properties of Wood Treated with Flame Retardants
2002, 22(2): 141-144. DOI:
10.3969/j.issn.1000-1565.2002.02.009
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Determination of Capsaicinoid Components with RP - HPLC Method
2002, 22(2): 145-147. DOI:
10.3969/j.issn.1000-1565.2002.02.010
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Study on Energy Transfer Among Acridine Yellow and Fluorescence Dyes
2002, 22(2): 148-153. DOI:
10.3969/j.issn.1000-1565.2002.02.011
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Hemocyte Culture of Penaeus japonicus
2002, 22(2): 154-156,160. DOI:
10.3969/j.issn.1000-1565.2002.02.012
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The Bio - diversity and Protection of Reptile in Lishan National Nature Reserve
2002, 22(2): 157-160. DOI:
10.3969/j.issn.1000-1565.2002.02.013
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A New Encoding and Decoding Scheme of BCH Code
2002, 22(2): 161-164,207. DOI:
10.3969/j.issn.1000-1565.2002.02.014
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A Multi-agent System Based on VIP and VC
2002, 22(2): 165-169. DOI:
10.3969/j.issn.1000-1565.2002.02.015
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Application of Classified Cache Database in Web Query System
2002, 22(2): 170-174. DOI:
10.3969/j.issn.1000-1565.2002.02.016
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Design Based on the CAN Fieldbus Technology of the Switching Power Supply Monitoring Control System
2002, 22(2): 175-179. DOI:
10.3969/j.issn.1000-1565.2002.02.017
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Automatic Measurement Technique for Rail- wear Based on Computer Vision
2002, 22(2): 180-183. DOI:
10.3969/j.issn.1000-1565.2002.02.018
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Vision Structure and Superconductivity of Mg1-xNaxB2 Compounds
2002, 22(2): 184-185. DOI:
10.3969/j.issn.1000-1565.2002.02.019
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The structural properties and superconductivity of Mg1-xNaxB2 compounds are reported in this paper. Bulk samples X- ray diffraction (XRD) results indicate that the samples crystallize in a hexagonal structure. Due to the chemical activity of Mg powders, a sample amount of MgO impurity phase is detected by X-ray diffraction. Magnetization measurement results indicate that the non- stoichiometry of MgB2 has no influence on the superconducting transition temperature and the transition temperature width. And the introduction of Na almost has no effect on the transition temperature.
A Rapid Method for Preparation of PCR Template Using SDS
2002, 22(2): 186-188. DOI:
10.3969/j.issn.1000-1565.2002.02.020
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The structural properties and superconductivity of Mg1-xNaxB2 compounds are reported in this paper. Bulk samples X- ray diffraction (XRD) results indicate that the samples crystallize in a hexagonal structure. Due to the chemical activity of Mg powders, a sample amount of MgO impurity phase is detected by X-ray diffraction. Magnetization measurement results indicate that the non- stoichiometry of MgB2 has no influence on the superconducting transition temperature and the transition temperature width. And the introduction of Na almost has no effect on the transition temperature.
Biosynthesis of the Avermetins
2002, 22(2): 189-194,201. DOI:
10.3969/j.issn.1000-1565.2002.02.021
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Applications of Biotechnology on Fruit Trees Research
2002, 22(2): 195-201. DOI:
10.3969/j.issn.1000-1565.2002.02.022
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Study Advances on Selective Absorption to Light Wavelengths in the Development of Plants
2002, 22(2): 202-207. DOI:
10.3969/j.issn.1000-1565.2002.02.023
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双月刊,1962年创刊
主管:河北省教育厅
主办:河北大学
编辑出版:《河北大学学报(自然科学版)》编辑部
主 编:傅广生
ISSN:1000-1565
CN:13-1077/N
邮发代号:18-257
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