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161.
162.
Muse Oke RosalindTanYan Ching LesterG. Carter KennethA. Johnson Huanting Liu StephenA. McMahon MalcolmF. White Carlos Bloch CatherineH. Botting MartinA. Walsh AishahA. Latiff MalcolmW. Kennedy Alan Cooper JamesH. Naismith 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2008,120(41):7971-7974
163.
A.C. Carter G.P. Carver R.J. Nicholas J.C. Portal R.A. Stradling 《Solid State Communications》1977,24(1):55-60
The intensities of the bound to bound transitions of the shallow donors in silicon and CdTe are found to be strongly electric field dependent when observed by photoconductivity techniques at low temperatures. Under these conditions significant differences can be detected between the photoconductive spectrum and the same transitions observed in absorption. The photoconductive peaks are shifted consistently to lower frequency compared with the absorption spectrum and additional peaks appear which are not significant features in absorption. These additional peaks are believed to result from the formation of molecular complexes of donors. The strong electric field dependence of the bound transitions observed in photoconductivity, the shift to lower frequency of the peaks and the enhancement of the additional lines can all be explained qualitatively on the assumption that the mechanism responsible for the generation of the photosignal involves hopping between the excited states of the molecular complexes 相似文献
164.
C.P. Bust J.R. Carter W.W. Neale J.G. Rushbrooke D.R. Ward R.E. Ansorge B.Y. Oh M. Pratap G. Sionakides G.A. Smith J. Whitmore R. Raja L. Voyvodic 《Nuclear Physics B》1978,140(3):409-422
We have investigated the reactions . The final state is dominated by diffractive production of a system which shows a strong tendency to form . The process is also observed in this reaction, indicating an energy dependence of s?1.5±0.1. The channel shows less single diffraction, and has a doubly diffractive component consistent with pomeron factorization. Strong Δ++(Δ++) production is agoain seen, but in contrast to the channel we also observe considerable ?0 production. 相似文献
165.
R.E. Ansorge J.R. Carter R.P. Mount W.W. Neale R. Raja J.G. Rushbrooke 《Nuclear Physics B》1975,97(3):439-444
We present data on the inclusive neutron spectra produced in the forward direction by the interactions of 23.85 GeV/c protons in a copper target. The results are in good agreement with the predictions of the triple-Regge model. 相似文献
166.
S.F. Biagi M. Bourquin A.J. Britten R.M. Brown H. Burckhart A.A. Carter J.R. Carter Ch. Doré P. Extermann M. Gailloud C.N.P. Gee W.M. Gibson J.C. Gordon R.J. Gray P. Igo-Kemenes W.C. Louis T. Modis P. Mühlemann R. Weill 《Physics letters. [Part B]》1982,112(3):277-280
From a sample of 735 000 Ξ? decays, we have obtained a new upper limit for the branching ratio . The result is 1.9 × 10?5 at the 90% confidence level. 相似文献
167.
J. Carter R.G. Clarkson V. Hnizdo R.J. Keddy D.W. Mingay F. Osterfeld J.P.F. Sellschop 《Nuclear Physics A》1976,273(2):523-532
Angular distributions for 16O + 24Mg and 12C + 24Mg elastic and inelastic (2+, 1.37 MeV state in 24Mg) scattering have been measured at energies spanning the Coulomb barrier. Apart from the structure typical of strong destructive Coulomb-nuclear interference, the data exhibit some additional specific features. Coupled channel calculations were performed, along with DWBA calculations to analyse the data using fixed coupling strengths deduced from the results of Coulomb excitation work. The importance of higher-order effects such as reorientation, is demonstrated. 相似文献
168.
169.
Rate constants for the gas phase reactions of O3 and OH radicals with 1,3-cycloheptadiene, 1,3,5-cycloheptatriene, and cis- and trans-1,3,5-hexatriene and also of O3 with cis-2,trans-4-hexadiene and trans -2,trans -4-hexadiene have been determined at 294 ± 2 K. The rate constants determined for reaction with O3 were (in cm3 molecule-1s?1 units): 1,3-cycloheptadiene, (1.56 ± 0.21) × 10-16; 1,3,5-cycloheptatriene, (5.39 ± 0.78) × 10?17; 1,3,5-hexatriene, (2.62 ± 0.34) × 10?17; cis?2,trans-4-hexadiene, (3.14 ± 0.34) × 10?16; and trans ?2, trans -4-hexadiene, (3.74 ± 0.61) × 10?16; with the cis- and trans-1,3,5-hexatriene isomers reacting with essentially identical rate constants. The rate constants determined for reaction with OH radicals were (in cm3 molecule?1 s?1 units): 1,3-cycloheptadiene, (1.31 ± 0.04) × 10?10; 1,3,5-cycloheptatriene, (9.12 × 0.23) × 10?11; cis-1,3,5-hexatriene, (1.04 ± 0.07) × 10?10; and trans 1,3,5-hexatriene, (1.04 ± 0.17) × 10?10. These data, which are the first reported values for these di- and tri-alkenes, are discussed in the context of previously determined O3 and OH radical rate constants for alkenes and cycloalkenes. 相似文献
170.
The different types of surface intersection which may occur in linear configurations of triatomic molecules are reviewed, particularly with regard to the way in which the degeneracy is split as the molecule bends. The Renner-Teller effect in states of symmetry Π, Δ, Φ, etc., and intersections between Σ and Π, Σ and Δ, and Π and Δ states are discussed. A general method of modelling such intersecting potential surfaces is proposed, as a development of the model previously used by Murrell and Carter and co-workers for single-valued surfaces. Some of the lower energy surfaces of H2O, NH2, O3, C3, and HNO are discussed as examples. 相似文献