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中国科学

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Science in China,Ser.B

本刊主要报道化学基础研究及应用研究方面具重要意义的创新性研究成果. 涉及的学科主要包括理论化学、物理化学、无机化学、有机化学、高分子化学、生物化学、环境化学、化学工程等。

发文量：5611
被引量：1994
H指数：0
开始收录时间：1982(10)
CNKI综合因子：1.188
维普期刊影响因子： 0.278
万方期刊影响因子：0.36
创刊时间：1950

国内刊号/CN：CN 11-1789/N

国际刊号/ISSN：1674-7291
发行周期：月刊

邮发代号：80-203
主管单位：中国科学院

主办单位：中国科学院;国家自然科学基金委员会

中国科学-联系信息

主编：Li-Jun Wan
电话：010-64016732 64016350
邮箱：chemistry@scichina.org
地址：北京市东黄城根北街16号
邮编：100717

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中国科学 >2023年第2期

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1.THE CRYSTAL STRUCTURE, ELECTRONIC STRUCTURE AND SUPERCONDUCTIVITY OF Bi₂Sr₂Ca_1-xY_xCu₂O_8+y
- 陈祖耀;朱英杰;刘先明;王楠林;张其瑞;杨丽;钱逸泰;
- 《中国科学》 | 1992年第7期
摘要：The effect of Y substitution for Ca on the crystal structure and electronic states of Bi₂Sr₂CaCu₂O_8+y was studied. It is found that the modulation period of the incommensurate superlattice along b axis decreases from 4.7b to about 4.0b gradually, which implies the change of the extra oxygen atoms residing within double Bi-O layers. Two kinds of modulation structures with periods of 4b and 8b exist in the same compound as Ca is completely substituted by Y. XPS was employed to study the change in the electronic structure. The results suggest that the variation of superconductivity is not caused by the slight change in crystal structure, but rather by the hole filling in O2p orbitals in CuO₂ layers. For this substituted system, it is still the case where one hole in Cu3d orbital （3d9） is corresponding to the strong correlation antiferromaguetic insulator, and an extra hole in O2p orbital in CuO₂ layer （3d9L） to the superconductor.
- high temperature superconductor Bisub2/subSrsub2/subCasub1-x/subYsubx/subCusub2/subO（8+y） modulation structure conductor-insulator transition X-ray photoemission spectroscopy (XPS).;
2.QUASI-RESONANCE OF BAROTROPIC ATMOSPHERIC WAVE MOTION AND MID-LATITUDE LOW-FREQUENCY OSCILLATION
- 陆维松;
- 《中国科学》 | 1992年第7期
摘要：It is proved, based on the quasi--geostropic barotropic vortex equation and the quasi-resonance conditions K₁+ K₂+ K₃=0 and ω₁ +ω₁ +ω₃ =Δω, that the analytic solution ofthe 3--wave amplitude of quasi--resonance is an elliptical function. The approximate expressionfor the periodic variation of wave energy is thus obtained under certain conditions. Boththe approximate expression and numerical calculation indicate that the period of energyvariation approaches the period 1/Δω corresponding to the quasi--resonance frequency biasΔω itself. When Δω～（0.1--0.025）o（ω_j）, the energy variation period is 12---46 days andwhen Δω=0, it is 25--568 days. Therefore, the occurrence of frequency bias Δω is probablya new important mechanism for the formation of mid-latitude low--frequency oscillation.This also accounts for the result of the numerical test Egger （1978） did on blocking causedby the resonance of two topographic stationary waves and one free slow wave.
- quasi-resonance mid-latitude low-frequency oscillation blocking;
3.MANIFOLDS WITH CONSTANT CODIMENSIONAL INVOLUTION
- 岳清奇;
- 《中国科学》 | 1992年第7期
摘要：This paper finds a group of special generators for Thom-cobordism ring MO. From this, we obtain a necessary and sufficient condition of α∈ J_n~k for all k.
- cobordism group characteristic number Stong-manifold Γ-operation.;
4.NECESSARY AND SUFFICIENT BOUNDARY INTEGRAL EQUATIONS FOR PLANE HARMONIC FUNCTIONS
- 胡海昌;
- 《中国科学》 | 1992年第7期
摘要：It is discovered that the customary boundary integral equations for plane harmonic functions are neither necessary nor sufficient. This is due to a misunderstanding that a boundary integral representation not covering all plane harmonic functions is regarded as such. This representation is modified in the present paper to cover all plane harmonic functions. Then two necessary and sufficient boundary integral equations, one with direct and the other with indirect unknowns, are established.
- boundary value problem of harmonic function boundary integral equation boundary element method.;
5.THE EVOLUTION OF MODERN OYSTER BIOHERMS AND THE ECOLOGICAL CHARACTER AND THE PALEOEN-VIRONMENTAL SIGNIFICANCE
- 耿秀山;傅命佐;徐孝诗;李培英;
- 《中国科学》 | 1992年第7期
摘要：In this paper, the morphology, sedimentary structure, bioherm--building mollusk assem-blages and their growing and piling-up models of modern oyster bioherms in the estuariesof the Zimaigou and Xiaoqing Rivers are described and expounded, the environmentalconditions for the development of oyster bioherms, such as the dynamical geomorphicbackground, water depth, hydrodynamic factors and ecological conditions in the estuaries,are analyzed, the relationship of the successively seaward migrating of oyster biohermswith average annual sea-level changes and the erosion--accretion processes in the estuariesare probed and explained, and the geological significance of oyster bioherms in the studyof Quaternary marine environmental evolution is presented.
- modern oyster bioherm ecological environment average annual sea level palaeoenvironment;
6.ISOMORPHISMS BETWEEN ENDOMORPHISM RINGS OF FREE MODULES
- 许永华;
- 《中国科学》 | 1992年第7期
摘要：In this paper we give the following main results: (ⅰ) Let F(?) and G(?) be two free modules. Then F(?) and G(?) are semi-linearly isomorphic if and only if End F(?) and End G(?) are strictly isomorphic. (ⅱ) We give a new method to generalize the Bolla theorem in 1985 which gave a categorical description for isomorphism between End F(?) and End G(?). (ⅲ) The Wolfson theorem is a corollary of our theorem.
- free modules semi-linear isomorphisms endomorphisms strict isomorphisms category equivalence.;
7.ON THE INDEX OF EIGENVALUES OF TRANSPORT OPERATOR IN INHOMO GENEOUS MEDIA
- 姚爱翔;阳名珠;
- 《中国科学》 | 1992年第7期
摘要：By methods of operator theory, this paper discusses index problem of eigenvalues for transport operator in inhomogeneous media. A relation between the index problem and the corresponding integral operator is found. It is shown that every realeigenvalue of the transport operator is of index one.
- transport operator inhomogeneous media.;
8.NEUROCOMPUTATION OF VISUAL RELATIVE MOTION INFORMATION
- 郭爱克;杨先一;
- 《中国科学》 | 1992年第7期
摘要：In this paper the neurocomputation of figure-ground relative motion information in thevisual system of the fly have been investigated in great detail by a combination of quanti-tative behavioural experiments and computational model simulations. Only torque responsesabout the vertical axis of the tethered flying flies (Musca domestica) were determined inthe behavioural experiment. The main results of behavioural experiments are: (i) The dynam-ics of the torque responses depends not only on the phase relationship between figure andbackground motion but also on the oscillation frequency of the figure and ground. (ii) Inall the phase relations tested, the time courses are a characteristic fingerprint of the partic-ular phase relationship. (iii) The variation of the amplitude of the response peaks is an espe-cially sensitive indicator for the variability of figure--ground discrimination behaviour. The main results of computer simulations are: (i) The "computer fly", the networkmodel of both the SF-system and
- figure-ground discrimination elementary movement detector largefield system small-field system neurocomputation;
9.SPECTROSCOPIC CHARACTERISTICS AND ENERGY TRANSFER PROCESSES IN C-PHYCOCYANIN FROM CYANOBACTERIUM Westiellopsis prolifica
- 夏安东;张新夷;孟继武;侯尚公;
- 《中国科学》 | 1992年第7期
摘要：The spectroscopic characteristics and pathways of energy transfer in the C--phycocyaninmonomer （αβ） and trimer（αβ）₃ isolated from cyanobacterium Westiellopsis prolifica havebeen investigated by absorption, excitation, fluorescence, fluorescence excitation polarizationand fluorescence polarization spectra and the deconvolution of those spectra. The phenome-non of an energy--back--transfer within a C--phycocyanin trimer has been found, and a tentativemodel of the bidirectional energy transfer is proposed by us, which describes well our exper-imental results.
- C-phycocyanin monomer trimer energy-back-transfer strong coupling interaction;
10.STRUCTURE AND CHARACTERISTICS OF LEFT CLIFFORD SEMIGROUPS
- 朱聘瑜;郭聿琦;岑嘉评;
- 《中国科学》 | 1992年第7期
摘要：As generalization of Clifford semigroups, left Clifford semigroups are defined and ξ-products for such semigroups and their semilattice decompositions are studied. In particular, considering how a semilattice decomposition becomes a strong semilattice decomposition and ξ-product becomes spined product, some structure theorems and characteristics for this class of semigroups are obtained.
- left Clifford semigroup semilattice and strong semilattice of left groups ξ-prduct and spined product.;
11.PSEUDO-DIFFERENTIAL OPERATORS AND DERIVATIVES ON LOCALLY COMPACT VILENKIN GROUPS
- 苏维宜;
- 《中国科学》 | 1992年第7期
摘要：Many mathematicians pay their great attention to the study of the concept of derivatives for functions defined on locally compact Vilenkin groups. In this paper, this topic is investigated by virtue of so-called pseudo-differential operators. We give the definitions of derivatives and integrals of functions defined on locally compact Vilenkingroups and study their properties, then give an application example.
- locally compact Vilenkin group pseudo-differential operator pointwise and strong derivative pointwise and strong integral.;
12.GRAPHICAL REPRESENTATION OF THE SUB-SOLIDUS PHASE RELATIONSHIPS IN THE RECIPROCAL SALT SYSTEM Si, Al, Y/N, O
- 孙维莹;严东生;田增英;
- 《中国科学》 | 1992年第7期
摘要：This is a paper for the sub-solidus phase relationships in the full system Si₃N₄-A1NAl₂O₃-SiO₂-Y₂O₃-YN. Within this system there exist seventy-six compatibility tetrahedra.
- phase relationships Si Al Y/N O system Sisub3/subNsub4/sub α’-Sialon β’-Sialon.;
13.SEQUENCE STRUCTURE OF ETHYLENE-VINYL SUBSTITUTED COPOLYMER WITH 13C NMR IV——CHLORINATED POLYETHYLENE
- 周子南;戴莹琨;田文晶;吴盛容;景凤英;冯之榴;
- 《中国科学》 | 1992年第7期
摘要：The substituent chemical shift （SCS） has been applied to the assignment of the 13C NMRspectrum of chlorinated polyethylene （CPE）. CPE of different chlorine contents has been em-ployed and their sequence structure discussed. The results show that characteristic of CPEwith medium chlorine content is the dichloroethane structure in molecular chain. SCS param-etets have been obtained from the 13C NMR spectra. It was found that the effects of chlorinecontent and temperature on SCS are negligible, but the substituent parameter S₁ reduced by0.39 ppm when C₂Cl₄ was added to solvent ODCB.
- chlorinated polyethylene 13C NMR sequence structure substituent chemieal shift;
14.A cDNA CLONE WITH ANTIONCOGENE ACTIVITY
- 刘定干;王达;陈珍珍;李载平;野田亮;井川洋二;
- 《中国科学》 | 1992年第7期
摘要：A cDNA clone, p14--6, which has an antioncogene activity on the v--Ki--Ras oncogene-transformed malignant cell line DT, was found. This clone was recovered from the revertantR14 cells, which had been isolated by transfections of DT cells with a normal human fibro-blast cDNA library cloned in pcD2, an Okayama-Berg vector. When transfected into DT cells,p14--6 clone gave rise to phenotypical flat reversion in 5--15% of DT transfectant colo-nies. The p14--6--transfected flat cell line, RR, was proven to be a true revertant with signif-icantly reduced malignancy by in ritro and in riro malignancy tests. All other clones recov-ered from R14 cells were unable to cause this reversion. Molecular hybridizations showedthat the p14--6 was inserted into RR genome as tandem repeats, and no structural changewas found in the D--Ki--Ras oncogene in RR genome. These facts suggest that the antioncogeneactivity of the p14--6 clone on the DT cells may be exerted through expression of thecDNA contained in this clone. Possib
- antioncogene cDNA transfection reversion;
15.INVOLUTION NUMBER SEQUENCE AND DIMENSIONS OF THE COMPONENTS IN FIXED POINT SET OF AN INVOLUTION Ⅱ
- 吴振德;杨华建;刘宗泽;
- 《中国科学》 | 1992年第7期
摘要：By the application of the involution number sequence introduced in the previous paper~[1], we prove in this paper that the fixed point set of any smooth unfree involution on (S~1)~n must be constant-dimensional.
- Wu class Stiefel-Whitney class involution number sequence Leray-Hirsch theorem.;
16.THREE-POINT TRANSITION FUNCTIONS FOR TWO-PARAMETER MARKOV CHAINS AND THEIR FOUR SYSTEMS OF PARTIAL DIFFERENTIAL EQUATIONS
- 郭军义;杨向群;
- 《中国科学》 | 1992年第7期
摘要：Analytic properties of three-point transition functions for wide-past Markov chains with two parameters are investigated. The concept "Standardness" is introduced. For standard three-point transition functions, four systems of leftward, rightward, downward and upward partial differential equations are derived.
- wide-past Markov chain family of three-point transition functions standardness.;
17.RAMAN MAGNETIC RESONANCE IN AX_n SYSTEMS
- 杨代文;叶朝辉;
- 《中国科学》 | 1992年第7期
摘要：It is demonstrated in terms of heteronuclear coupling systems AX_n (n=1, 2 and 3) that multiple quantum (MQ) transitions of various orders can be displayed in the perturbation of a weakly continuous wave (CW) R. F. field. The effect of CW frequency offset and R. F. field strength on the observed MQ transition is discussed. The one-dimensional (1-D) MQ NMR has some advantages, such as high sensitivity, easy assignment of its spectrum, only requiring 1-D Fourier transform. Therefore it has a broad prospect for application. The Raman effect produced by the CW irradiation is interpreted.
- multiple quantum (MQ) NMR one-dimensional MQ NMR Raman magnetic resonance (RMR).;
18.THE CANONICAL FORM OF UNCONTROLLABLE NONLINEAR CONTROL SYSTEMS
- 刘晓平;王景才;张嗣瀛;
- 《中国科学》 | 1992年第7期
摘要：This paper considers uncontrollable control systems, and gives the definition of the canonical form for such systems. Necessary and sufficient conditions for the existence of the canonical form are derived.
- canonical form nonlinear control system state-coordinate transformation.;
19.THEORETICAL STUDY OF CHAIN MICROSTRUCTURE OF COPOLYMERS IN ANIONIC COPOLYMERIZATION WITH CONSTANT MONOMER RATIO
- 胡孝东;颜德岳;徐祥铭;
- 《中国科学》 | 1992年第8期
摘要：In this work, the sequence distribution of copolymers generated in anionic copolymeriza-tion with a constant comonomer ratio has been theoretically investigated by means of non-steady state kinetic technique. The microstructural parameters of the copolymer, such as se-quence distribution functions, the average length of sequence and mole fractions of dyads andtriads, are derived by rigorously solving the kinetic differential equations. Furthermore, theseparameters are connected with reaction time and initial conditions and therefore become pre-dictable.
- sequeuce distribution chain microstructure anionic copolymerization;
20.RESONANCE RAMAN SPECTRA AND MOLECULAR ORIENTATION DISTRIBUTION OF INTERFACIAL MONOLAYERS
- 田永驰;王靖远;张韫宏;梁映秋;
- 《中国科学》 | 1992年第8期
摘要：An orientation distribution model has been suggested for interfacial monomolecular lay-ers by taking account of the orientational uniaxiality of long-chain amphiphilic molecules inmonolayers. The resonance Raman spectra of azo-containing monolayers are the oreticallytreated on the basis of the model. Order parameters P₂ and (P₄ are obtained from polar-ized Raman measurements, giving rise to distribution graphs. These analyses indicate thatthe orientation distribution alters upon the increase of adsorption amount and displays inter-esting variation among different interfacial monolayers. The aggregate aspects of the 2-dimensional condensed states are also discussed from the viewpoint of molecular orientation.
- interfacial monolayer resonance Raman spectra molecular orientation distribution 2D condensed matter;
21.INTERPOLATING SEQUENCES FOR A~∞(φ)-FUNCTIONS
- 肖杰;
- 《中国科学》 | 1992年第8期
摘要：Let φ be a normal function on [0, 1) and A~∞(φ) of functions f analytic on the unit disk D={z: |z|1} with sup {φ(|z|)|f(z)|: z∈D}∞. A sequence {z_n}(?)D defines an operator T from A~∞(φ) to l~∞ by Tf=(φ(|z_n|)f(z_n)}for f∈A~∞. A necessary and sufficient condition for TA~∞(φ)=l~∞ is given by inf
- normal function A~∞(φ)-function Carleson measure weakly separated uniformly separated.;
22.HYDRAULIC CHARACTERISTICS OF OPEN CHANNEL FLOWS OVER ROUGH BEDS
- 董曾南;王晋军;陈长植;夏震寰;
- 《中国科学》 | 1992年第8期
摘要：Due to the very fine space resolution and high noise-reduction capability of the improved laboratory-made laser Doppler anemometer, the temporal mean velocity and velocity fluctuation in uniform, rough bed open channel turbulent flows were measured in full detail nd a large amount of information about the wall region was obtained. The influence of boundary roughness on flow characteristics was examined by changing the relative smoothness scale, H/k_s, of the flow. It is proposed that there are three sorts of bed roughness, namely, the large scale roughness, the medium one and the small one. The small scale roughness is of more universal significance to engineering practice, and much attention is devoted to the characteristics of the flow over boundaries of such a sort of roughness.
- open channel flow turbulence rough bed.;
23.THE STRUCTURE BASIS OF THE POOR FIBRIN SPECIFICITY OF UROKINASE(Ⅱ)——THE INHIBITION OF UROKINASE A CHAIN 149--157 ON THE FIBRIN STIMULATED ACTIVATION OF PLASMINOGEN BY TISSUE TYPE PLASMINOGEN ACTIVATOR
- 宋安;刘建宁;余瑞荣;崔大敷;周同明;崔恒苒;朱德煦;
- 《中国科学》 | 1992年第8期
摘要：In view of the similarity of the charge distribution between fibrin A_α148--161 and Achain 149--157 of urokinase,the latter might compete with fibrin A_α148--161 when singlechain pro-urokinase is converted to double chain urokinase.To test this, the stretch of uro-kinase A chain 135--157 was separated from the low molecular weight urokinase, a competi-tive binding between this stretch and fibrin to tPA kringle-2 was shown by radio-bindingassay. The inhibition of the stretch on the fibrin stimulated activation of plasminogen wasdemonstrated in the caseinolytic system. The synthesized novapeptide urokinase A chain 149--157 (R-peptide) showed a significant inhibition on the activation of plasminogen in the pres-ence of fibrin. By contrasting finely with R-peptide, a synthesized novapeptide in which Arg154and Arg156 were replaced by Asp (D-peptide) did not show any inhibition effect on the fi-brin stimulated activation of plasminogen by tPA. These results suggest that the positivelycharged residues in the
- tissue type plasminogen activator (tPA) urokinase (UK) pro-urokinase (Pro-UK) fibrin kringle;
24.A NEW EXPLICIT BOUND IN LANDAU’S THEOREM
- 李忠;
- 《中国科学》 | 1992年第8期
摘要：Let f（z）=a_o+a₁z+… be holomorphic in the unit disk {z: |z|1} and omit the values 0 and 1. It is proved in this paper that |a₁|≤2|a₀|{|log|a₀||+Γ4（1/4）/4π2-mRe（a_n8 + 1）} where m0.04 is a constant, ε=1 as |a₀|≤1 and ε=-1 as |a₀|1. This result is a precise version of the well-known theorem of Landau and an improvement of the results of W. Lai[1], J. A. Hempel[2] and J. A. Jenkins[3]
- hyperbolic metric Landau’s Theorem function theory.;
25.q-DEFORMED BOSON REPRESENTATIONS OF UNIVERSAL ENVELOPING ALGEBRAS IN THE CASE WHERE q IS A ROOT OF UNITY
- 孙昌璞;葛墨林;
- 《中国科学》 | 1992年第8期
摘要：By further improving the method of q-deformed boson realization, the standard basis is built for the typical subalgebra chains. When q is a root of unity, the irreducible and indecomposable representations of quantum universal enveloping algebras (A_l-1)q and （C_l）q are constructed and their reduction structure and decompositions are analyzed.
- quantum group quantum universal enveloping algebra indecomposable representation subalgebra chain.;
26.CRYSTAL NUCLEATION AND FORMATION OF BULK METALLIC GLASS IN UNDERCOOLED Pd₄₀Ni₄₀P₂₀ MELT UNDER HIGH PRESSURE
- 许应凡;黄新明;王文魁;
- 《中国科学》 | 1992年第8期
摘要：This paper reports a new method for the preparation of bulk metallic glass. A fragment of cast Pd₄₀Ni₄₀P₂₀ alloy was put into a Belt anvil high-pressure cell, and a bulk metallic glass with the size up to 4.0 mm in diameter was obtained by applying pressure of 5.5 GPa. The cooling rate used for the melt quenching was as low as 10 K/s under pressure. Samples were examined by using X-ray diffraction and differential thermal analysis（DTA）to confirm whether they are of vitrification or not. The microstructures of the sample were observed by using a scanning electron microscope and an optical microscope. The effect of pressure on the kinetics of crystal nucleation and growth is also investigated.
- metallic glass undercooling and nucleation high pressure experiment.;
27.CHARACTERISTICS OF THE TRIGONIOIDACEAN EVOLUTION AND THE REGULARITY OF THEIR GENETIC MATERIAL MUTATIONS
- 郭福祥;
- 《中国科学》 | 1992年第8期
摘要：The paper discusses the characteristics of the trigonioidacean evolution, including stagecharacter, pattern of the punctuated equilibria, periodic reappearance phenomenon of similarmorphology and synchronous orientation parallelism.This indicates that the trigonioida-ceans were themselves the material foundation cf their evolution.It is pointed out that thecharacteristics reflect the regularity of their genetic material mutations.
- bivalves punctuated equilibria synchronous orientation parallelism isomorphism genetic material mutation;
28.CONSTRUCTION OF INDECOMPOSABLE POSITIVE DEFINITE UNIMODULAR HERMITIAN FORMS
- 朱福祖;
- 《中国科学》 | 1992年第8期
摘要：This paper gives a method to construct indecomposable positive definite unimodular Hermitian (?)-lattices of any rank n with m(?)3 (mod 4). It is proved that we can construct: (i) for any natural number n, an indecomposable positive definite normal unimodular (?)-(resp. (?)-lattice of rank n, except n=2, 3, 4,5 (resp. n=2, 3) (in the exceptional cases there are no lattices with the desired properties), and (ⅱ) for any n=4k(resp. n=2k), an indecompoaable positive definite even unimodular (?) lattice of rank n.
- indecomposable lattice unimodular lattice genus normal lattice even lattice.;
29.DOMAIN DECOMPOSITION HYBRID METHOD FOR NUMERICAL SIMULATION OF BLUFF BODY FLOWS——THEORETICAL MODEL AND APPLICATION
- 凌国灿;凌国平;王运平;
- 《中国科学》 | 1992年第8期
摘要：The discrete vortex method is not capable of precisely predicting the bluff body flow separation and the fine structure of flow field in the vicinity of the body surface. In order to make a theoretical improvement over the method and to reduce the difficulty in finite-difference solution of N-S equations at high Reynolds number, in the present paper, we suggest a new numerical simulation model and a theoretical method for domain decomposition hybrid combination of finite-difference method and vortex method. Specifically, the full flow field is decomposed into two domains. In the region of O(R) near the body surface (R is the characteristic dimension of body), we use the finite-difference method to solve the N-S equations and in the exterior domain, we take the Lagrange-Euler vortex method. The connection and coupling conditions for flow in the two domains are established. The specific numerical scheme of this theoretical model is given. As a preliminary application, some numerical simulations for flows
- domain decomposition hybrid method finite-difference method vortex method numerical simulation circular cylinder-separated flow.;
30.HOFER-ZEHNDER CAPACITY AND ITS APPLICATION IN M×R2n
- 马仁义;
- 《中国科学》 | 1992年第8期
摘要：In this paper, we study the Hofer-Zehnder capacity and the Weinstein conjecture in symplectic manifold (M×R2n, ω（?）σ). Let us define l₁（M, ω）=inf{ω, α|0, α∈π₂（M）}. Suppose l₁（M, ω）O, Oπr22/1 l₁（M, ω）. Then C_HZ（M×B（r））=C_HZ（M×Z（r））=πr2. In the case M is a point {P}, we obtain the well-known result at present. For n1, consider on Cpn-1 the standard symplectic form co such that ω[u]=n for a generator u of H₂(CPn-1. Suppose Oπr22/1 n. ThenC_HZ（M×B（r））=C_HZ（M×Z（r））=πr2.As an application, we claim that the Weinstein conjecture in M×Z（r） is proved correct.
- symplectic capacity periodic solution pseudo-holomorphic curves Weinstein conjecture.;

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曾用名：中国科学B辑(英文版);Science in China(Ser.B);中国科学B辑(英文版)(Science in China(Chemistry))(11-1789/N 1006-9291);Science in China(Series B:Chemistry);中国科学B辑（英文版）（Science in China(Chemistry))(11-1789/N 1006-9291）
创刊时间：1950
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热门主题：SUB MOLECULAR SYNTHESIS STRUCTURE RADICAL FLUORESCENCE PREFACE N- REACTION POLYMER
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Chemistry:Chemistry (miscellaneous);

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