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121.
Mathematische Zeitschrift - 相似文献
122.
A new cyber infrastructure for rheology (CIR) has the potential of integrating the diverse rheological knowledge of experts around the world. In a multi-disciplinary effort, experts in specialized topics of rheology began to write CIR-modules that seamlessly merge into a general code so that it can be used by a wide range of engineers and scientists. At the center of CIR is a platform operating system that connects a wide range of dedicated software modules. These CIR-modules perform calculations and return the corresponding results to a central graphics screen. The computer platform allows the detailed analysis of experimental data, the communication of data, and the prediction of rheological material functions from a wide range of theories in rheology. Rheologists can access each other’s experimental results, make predictions with each other’s theories and simulate with each other’s computer codes. Through such collaboration, seemingly disparate theories and experimental observations can be linked and taken to their limits, thereby leading to unexpected insights and new questions. Beyond the pool of experts, CIR will draw industrial users into the rheology discussion. Easy-to-use CIR-tools will allow industrial rheologists to adjust rapidly to the changing needs and the pressure to obtain short-term solutions in a competitive environment. CIR has the potential of generating ideas for novel materials and novel manufacturing methods. At the same time, it will supply the tools to examine ideas quantitatively and to push these ideas even further. User-friendly methods are essential not only for research and application, but also for the teaching of rheology. We envision tools that allow a student to move seamlessly and rapidly between experimental data and the most advanced rheological theories, simulations, and modeling of applications. In-depth data analysis and evaluation of theory should become easy enough to be performed after reasonable training and without relying on over-simplifications. This will enable the student to reach a deeper understanding of rheology and to appreciate the significance that rheology has in technical applications. Even untrained talent may get introduced quickly into advanced concepts of rheology.Presented at the Annual Meeting of European Society of Rheology, Grenoble, April 2005 相似文献
123.
Holomorphic vector bundles on primary Kodaira surfaces 总被引:2,自引:0,他引:2
124.
Probabilities for the spin-forbidden transitions from the b1Σ+ and a1Δ states to the X3Σ? ground state of NH have been evaluated by a first-order perturbation expansion into S-eigenfunctions Nine 3Π and 1Π, five 1Σ+ and three 3Σ? states have been calculated by the MRD CI method at the experimental equilibrium distance of the X3Σ? state (1.0362 Å) which cover a vertical spectral region of = 100000 cm?1. The expansion terms of the perturbation sum are spin-orbit coupling coefficients obtained by using the Breit-Pauli one- and two-electron spin-orbit operator. The radiative lifetime of b1Σ+ has been determined in the Franck-Condon approximation to be 72 ms from ab initio data and 97 ms if experimental excitation energies for the low-lying valence states are employed. Recent experiments give a somewhat shorter lifetime for the corresponding 0-0 transition of 53 ms. The lifetime is governed by the transition to the 3Σ?±1 level of the non-rotating molecule, borrowing its intensity mainly from the A3Π → X3Σ? dipole transition. The second possible transition to the Ω = 0 level of the ground state is found to be weak. A similar relation of μ1/μ0 is expected for all the hydrogen containing isovalent molecules such as PH and AsH. The radiative lifetime of the a1Δ state has been calculated to be = 1.7 s. Recent matrix experiments predict a gas-phase lifetime of at least 3 s. Further experimental and theoretical investigations are in progress to clarify this unusual finding that the experimentally determined lifetime is longer than that calculated theoretically. 相似文献
125.
Marian Matłoka 《Fuzzy Sets and Systems》1985,15(3):255-262
In this paper a Fixed-Point Theorem and an application is presented. 相似文献
126.
In this paper new topological concepts connected with fuzzy multi-valued functions theory-as presented in the first part of this work-are introduced and their properties are investigated. As will be shown in future papers these concepts and properties are indispensable in connection with the analysis of fuzzy economic systems. 相似文献
127.
A two-dimensional symmetric stretching-bending potential surface for the electronic ground state of the XeF2 molecule has been computed by means of self-consistent field and multi-reference configuration interaction methods. At the correlated level of treatment it is found that the linear nuclear arrangement of XeF2 with XeF bond distances close to 200 pm corresponds only to a local minimum on the potential energy surface separated from the dissociation products Xe + 2F by a high energy barrier. The results of a vibrational analysis study enable a reliable reproduction and interpretation of available experimental data concerning the infrared spectrum of the molecule. 相似文献
128.
The reactions are reported between selenite and 1,2-dimercaptoethane (DME) or thioacetic acid (TAA) to form moderately stable derivatives having an enhanced absorptions in the 230–360 nm region in combining molar ratios 3:2 and 4:1, respectively. Both reactions invariably yield one product corresponding to the selenium-containing derivative of DME or TAA. The formation of products is a pH dependent process. The equilibrium constants of reactions between selenite and DME or TAA were measured. 相似文献
129.
Konstantin Mischaikow Marian Mrozek Pawel Pilarczyk 《Foundations of Computational Mathematics》2005,5(2):199-229
We introduce an efficient algorithm to compute the homomorphism
induced in (relative) homology by a continous map.
The algorithm is based on a cubical approximation of the map
and the theory of multivalued maps.
A software implementation of the algorithms introduced in this paper
is available at [27]. 相似文献
130.
Daniel Vegh Marian Landl Renata Pavlovicova Hans Kuzmany Peter Zalupsky 《Chemistry of Heterocyclic Compounds》1995,31(10):1238-1240
New phihalocyanine analogues were prepared based on 2,5-diamond-3,4-dicyanothiophene and diaminomaleo-nitrile.Department of Organic Chemistry, Slovak Technical University, Bratislava, Slovakia. Institute für Festkörperphysik der Universität Wien, Wien, Austria. Published in Khimiya Geterotsiklicheskikh Soedinenii, No. 10, pp. 1409–1411, October, 1995. Original article submitted September 24, 1995. 相似文献