最新刊期
      卷 33 ， 期 1 ， 1994
      • Song Xinyuan,Deng Jixian
        Vol. 33, Issue 1, Pages: 1-6(1994)
        摘要：For Threshold Autoregressive(TAR) Model in which the order,the Thresh-old and the delay parameters are given,we obtain the strong convergence rate of the esti-mates of the Darameters after the strong consistency of the estimates of the parameterswere discussed.  
        关键词：threshold autoregressive;strong consistency;strong convergence rate   
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        发布时间：2023-12-11
      • Wang Hanxing
        Vol. 33, Issue 1, Pages: 7-12(1994)
        摘要：The properties of the weak topology on the space of Banach space valuedmeasures have been reserched. Sufficient and necessary conditions that the weak topo-logical space can be a seperable metric space,and that the weak topological space can beacompact metric space,are given respectively in theoreml and theorem 2.Similar re-sults about probability meaures are thus generalized.  
          
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      • Zhao Jian,Wang Hongzhen,Zhu Wuhua
        Vol. 33, Issue 1, Pages: 13-18(1994)
        摘要：Bubble dynamics is concerned with a complicated nonlinear problem.Variousbubble wall motion equations had been proposed to simplify the solving process ,inwhich the Rayleigh’s ,Trilliang’s,Gilmore’s cquations are typical.The accuracy and ap-plicable extent of the above three equations are analyzed and compared with each otherby theoretical derivation. Results show that these equations are not suitable for thecase of strong nonlinearity at large mach number and Rayleigh’s equation is failed inbubble sound propagation.The new method for identifying the accuracy of bubble wallmotion equations suggested in this paper can be used to analyze other types of bubblewall motion equations.The method for identifying the accuracy in numerical calcula-tions is also proposed.  
        关键词： bubble;cavitation;dynamical equations   
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        发布时间：2023-12-11
      • Li Luoluo
        Vol. 33, Issue 1, Pages: 19-24(1994)
        摘要：Let n nonnegative real numbers λ1λ2……,λnand A, a positive semidefiniteHermitian matrix A of order n,be given. We present sufficient conditions for the solv-ability of muItiplicative inverse eigenvalue problem（（MH）,for short）; find a nonnega-tive diagonal matrix C such that the matrix CA possesses eigenvalues λ1λ2···,λn.Wepay more attention to the effects of smaller components of{λi}.In the case n=2, thesufficient conditions are also necessary for（MH）to have solutions.  
          
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        发布时间：2023-12-11
      • Liu Jinming,Huang Chaosheng,Guo Shuohong
        Vol. 33, Issue 1, Pages: 25-30(1994)
        摘要：Using mixed action as a trial to the modified mean field theory ,we calculatethe internal energies Ep of Z(2) ,U(l)and SU(2) lattice gauge fields in 4-dimensions。Phase diagram of first order phase transition like Van derwaals curve is obtained for Z(2)group ,which cannot be obtained witn any other trial actions. A very steepcrossover in the E_p-β curve for 4-D U(1) group shows the signal of 2nd order phasetransition。 The E_p-β curve for 4-D SU(2) group is smoothx shawing only a single,con-fining phase, The results are in good agrement with the Monte Carlo results both in thestrong-coupling region and crossver region。  
          
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        发布时间：2023-12-11
      • Luo Yongjian,Ye Hua
        Vol. 33, Issue 1, Pages: 31-36(1994)
        摘要：The field dlstributions in open resonators are studied by means of Gaussianbeam-wave theory.The resonant frequency of TEMp1gmode of the open resonator withplanospherical concave mirrors is derived.Several aspects concerning the design of theresonators are diseussed.The measured Q factor is approximately equal to the theoreti-cal calculated value.  
        关键词：open resonator;Gaussian bean-wave theory;quasi optical technique   
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        发布时间：2023-12-11
      • Hu Mengyou,Chen Junliang,Ma Zhonglong
        Vol. 33, Issue 1, Pages: 37-41(1994)
        摘要：Based on the generalized threshold decomposition property,a modified binarytree search algorithm used to adjust the threshold levels is obtained. A parallel pipelinedarchitecture of stack filtering is proposed.  
        关键词： stack filtering;modified binary-tree;parallel pipelined architecture   
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        发布时间：2023-12-11
      • Zeng Wenguang,Xu Shenghui
        Vol. 33, Issue 1, Pages: 42-48(1994)
        摘要：The relations of magnetization differential with magnatic intensity describedby dM/dt-H curves are studied in Ni-Zn ferrite with a constant rate of increasing H.It is shown that dM /dt-H curves depend on the rate to increase H and dM/dt increaseswith increased H for a fixed temperature. For fixed H ,dM/dt-H curres are lower forhigher temperature. Analytic expression for dM/dt is derived and the ratio of dampingcoefficient to restoring coefficient is measured to be in order of the l0￣(-5)～10￣(-6)s.  
        关键词：differential susceptibility;domain wall;Ni-Zn ferrite;coefficient of restoringforce   
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      • Ye Baohui,Zeng Tianxian,Han Ping,Ji Liangnian
        Vol. 33, Issue 1, Pages: 49-54(1994)
        摘要：The kinetic of substitution reaction of hydroxy ligands from cis-di- hydroxybis(1 ,10-phenanthroline)cobalt(Ⅲ)ion by glycine in 30%(v/v)wa-ter-ethanol medium has been studied by spectrophotometrically at pH=8.57。The dissociative interchange mechanism(I_d ) was suggested. The rate equa- tion of the substitution reaction was established. The activation parameters △H￣+and △S￣+of the reaction was 82.83 kJ·mol￣(-1) and 79.42 J·mol￣(-1)·K￣(-1),respectively.  
          
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      • Liao Aide,Lu Jiang,Xu Wenlie,Deng Yunxiang
        Vol. 33, Issue 1, Pages: 55-60(1994)
        摘要：The cationic polymerization of α-pinene with AlEt222233  
        关键词： AlEt2Cl;t-BuCl;α-pinene;cationic polymerization   
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        发布时间：2023-12-11
      • Ouyang Wei,Felig Ke,Li Zhuomei
        Vol. 33, Issue 1, Pages: 61-66(1994)
        摘要：The ionic interaction in sulfonated EPDM ionomers containing Li￣+,Na￣+,K￣+,Mg￣(2+), Ca￣(2+)and Ba￣(2+) has been investigated in solid state。 The existence of ionic cross-linking due to aggregation of M￣+ groups is detected by solubility tests.The infraredspectra(IR ) show that the interaction between sulfonate anion and metal cation decreas-(Institute of Polymer Science ,Zhongshan University,Guangzhou 510275)es withionic radiibut increases with valence。The dynamic mechanical analysis(DMA)shows that the width of the rubber platform decreases in the order of Li￣+>Na￣+>K￣+,Mg￣(2+)>Ca￣(2+)>Ba￣(2+) and M￣(2+)>M￣+。 Both IR and DMA indicate that the ionic interactionin sulfonated EPDM ionomers depends on the charge density on cation sulface.  
          
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        发布时间：2023-12-11
      • Wang Yongrui,Zhang Yingjie,Yu Kuanjing
        Vol. 33, Issue 1, Pages: 67-72(1994)
        摘要：Nitrogen and potassium have been supllied at late growtn stage about 6～7days before/ after flowering of photoperiod-temperature sensitive genic male-sterile11nes of rice hybrids （PTGMSLR）（F1）W6154S×DF0and W6154S×Tie-San-Ai.The nitrogen content in flag leaf ,chlorophyll total contents of top 3 leaves ,green leafarea,￣（14）C-metabolism exported from flag leaf and accumulated in panicle,soluble sugarand starch contents in vegetative organs and panicle ,and gtain yield in N and K treat-menr at late growth stage increase more than that in control treatments of bare and basicmanure.The physiological aspects and grain yield are different in different rice hybrids（F1） at condition of N and K treatments at late growth stage.  
          
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        发布时间：2023-12-11
      • Zhong Heng
        Vol. 33, Issue 1, Pages: 73-78(1994)
        摘要：It was found in the study of ultrastructure of the septal pore apparatus indikaryotic hyphae of Trenlella fuciformis The pore cap consists not of a number of cupu-late bodies,but of a number of folded laminate bodies that are dome-shaped over thepore openings.The folded laminate body appears U-shaped in longitudinal section,two parallel striate in cross-section, and open circular in tilted-longitudinal section offolded laminate base. The folded laminate body of eight-fold is composed of four elec-tron-dense layers. Two clear electron-dense layers are presented on both sides of thefolded laminate body, and the inside other two electron-dense layers are blurred be-cause they may be pressed closely together. Endoplasmic reticulum(ER )is continuouswith the unit membrane of both sides of the folded laminate structure,There are severalER on both sides of the septum,From what has been described above , it can be rec-ognized that the folded laminate body is formed by fold of paired ER.In order to differfrom the dolipore/parenthesome septum of other basidiomycetes and better describe theseptal pore apparatus of Tremella ,the author 8ives a name of dolipore/laminatesomesseptum.  
          
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        发布时间：2023-12-11
      • Wu ChaoYu,Zhang Wen
        Vol. 33, Issue 1, Pages: 79-90(1994)
        摘要：A highly nonlinear artificial neural network(ANN ) model is introducedas analternative approach for river flow forecasting of the Hengshi station , the control stationof the largest key project of water and electricity in Guangdong province。 Data for modelcalibration and test include five year hourly and one year daily mean discharge·Themodel can efficiently simulate the nonlinear process of a real hydrological system,Com-parisons are made between the ANN model and the existing system analysis models,e.g.CAR,RWTL and AR models. Totally l49 models are identified in this study, in allcases,the ANN model is superior to the system analysis models in the sense of increas-ing the forecasting lead time and improving the forecasting quality at the mean time。  
          
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        发布时间：2023-12-11
      • You Liyu,Wang Anyu
        Vol. 33, Issue 1, Pages: 91-97(1994)
        摘要：A typical tropical monsoon rainstorm process during l984 ‘Mei-Yu’ peiodover Jiang-Huai River areas was analyzed in this paper. It is found that this process isresuIted from the meridional development of the westerlies in midlatitudes and a ty-phoon which developed over the South China Sea and finally landed over vietnam。Strong eastward moving warm air currents in the east part of the Tibet-trough in mid-latitudes help the low-level jet stream ,which is just located in the outer ring of the ty-phoon ,rush northward and intensify again.That is called the effect of warm advection。While the tropical monsoons invade into the mainland further and further , through themoist process effect ,strong divergence at l00 hPa and relative strong upward motiondevelop rapidly. Consequently ,heavy rain occurs.  
        关键词： Jiang-Huai River areas;heavy rain;upper-level divergence;lower-level jetstream;tropical monsoons   
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      • Huang Chengbiao
        Vol. 33, Issue 1, Pages: 98-102(1994)
        摘要：The existence,uniqueness ,stability and expression of the periodic solutionsfor a class of unsymmetric oscillators with a parameter are studied.The relationshipbetween the amplitudes of the periodic solutions and the parameters is given. Also thebifurcations are obtained.The first-order expressions of the periodic solutions ,periodand frequency are computted emplying the generlized L-P method Comparisions with thenumerical mcthod are made.  
        关键词：unsymmetric oscillator;periodic solutions;bifurcations   
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      • Shao Yuanzhi,Zhang Jieli,Zhou Rouzheng,Huang Zhengwei,Zhang Jinxiu
        Vol. 33, Issue 1, Pages: 103-105(1994)
        摘要：The magnetocaloric effects on binary gadolinium intermetallics have been ex-perimentally investigated by applying the sample with low magnetic field(～1T ) underadiadatic condition,It is shown that some binary gadolinium intermetallics ,with bothexcellent magnetocaloric effects and a lower ferromagnetic-paramagnetic curie tempera-ture than 293 K,are suitable working substances of room temperature magnetic refrig-eration.  
          
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      • Wang Guiyangsheng,Zeng Longmei,Su Jingyu
        Vol. 33, Issue 1, Pages: 106-110(1994)
        摘要：Two methods for the synthesis of threo-7,14-dihydroxyl-3,9,13-trimethyl-6-isopropenyItetradeca-(2E, 8E,12E)-rien-1-phenyIthio ether(8),a key intermediate of the synthesis of cembranolide ,were reported.The over-all yield of 8 is 24%in the first method in which geranial is a starting meterial via condensation, acetylation,oxidation and deacetylation. In the second pro-cess the overall yield of 8 is 48%from geranial through oxidation and conden-sation.  
          
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      • Shen Shunhua,Zhao Xiaokui,Lin Yongcheng
        Vol. 33, Issue 1, Pages: 111-114(1994)
        摘要：Frequency of micronuclei in human peripheral blood lymphocytes in vitro in-duced by low dose ￣(60)Co-γ ray irradiation could be inhibited by TDF(trihydroxy-methoxydihydro-flavone ).It was discovered that auxiliary sovent DMSO did not havesignificant inhibiting effect.  
          
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      • Huang Jiancheng,Wu Shaojun
        Vol. 33, Issue 1, Pages: 115-118(1994)
        摘要：This paper deals with a new Chinese record of Plasmodium found in the do-mestic hen from the Bao-ting county, Hainan , China。PLASMODIU M(Novyella) JUXTANUCLEARE.The parasite is so minute in size, That the nucleus and cytoplasm of the youngestform does not reach lu in size ,cytoplasm of the trophozoite contains three granules of(Department of Biology , Zhongshan University , Guangzhou 510275)pigment at one end of the parasite, Among them a black-brown granule is moredistinct. Divisions of the nucleus take place until three to five merozoites are produced,and the cytoplasm rapidly disappears.The gametocytes are oval ,pearshaped or slightlyelongated;the microgametOcyte possesses a large diffuse nucleus occuping most part ofthe parasite; a star-like nucleus may occasionally be found in the macrogametocytes。They may slightly displace the nucleus of the host cell ,and all stages of the parasitesare closely embedded into the nucleus of the erythrocytes.  
          
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      • Lin Peiqing,Liu Fusheng
        Vol. 33, Issue 1, Pages: 119-122(1994)
        摘要：This paper compare the main quality indexes of Prodenia litura reared byboth artificial diets and natural ones.The results indicate that the group reared by arti-ficial diets posesses better resistance to diseases , greatcr weigt of pupas , longer life ofadults and higher rate of survival.These advantages solve the feed problems of mass-rearing of Prodenia litura Fabr.  
        关键词：Prodenia litura Fabr.;artifical diets;natural diets   
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      • Liang Zhirong,Liu Yijun,Li Liejun,Chen Huafu
        Vol. 33, Issue 1, Pages: 123-125(1994)
        摘要：The thermoluminescence energy of mineral caused by temperature effect ofmoving faults must be annealed to zero when the new moving ages of faults is deter-mined with thermoluminescence technique , but in actual earthquake and geology condi-tion ,the thermoluminescence energy of mineal cannot be annealed to zero so that themeasuring result is very different from the real ages of faults We put forward a newtechnique called Thermoluminescence nen-zerolizing technique ,it need not thermolumi-nescence energy annealing to zero ,it can measure the new moving ages of faults withnon-zero thermoluminescence energy at any earthquake and geology condition , thus themeasuring precision of tne new fault moving ages can be highly improved.  
        关键词： fault;moving age;thermoluminescence   
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