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1.
Avramenko Andriy A. Shevchuk Igor V. Dmitrenko Nataliia P. Skitsko Ivan F. 《Journal of Thermal Analysis and Calorimetry》2022,147(22):12709-12719
Journal of Thermal Analysis and Calorimetry - The paper focuses on the analytical analysis of the propagation of a normal shock wave in an adiabatic gas flow with nanoparticles. A modified... 相似文献
2.
A. Yu Yeremin N. L. Zamarashkin S. A. Kharchenko 《Journal of Mathematical Sciences》1998,89(6):1591-1606
An algorithm for translating unstable eigenvalues of single-input partial pole assignment problems based on rank-one transformations
is suggested. Special attention is paid to the practical case where translations are constructed using inexact spectral information
provided by the Arnoldi procedure. Estimates of the resulting perturbations of stable and translated poles are derived. These
estimates depend on the accuracy of spectral information about the unstable poles. The algorithm proposed is illustrated with
numerical examples. Bibliography: 11 titles.
Translated fromZapiski Nauchnykh Seminarov POMI, Vol. 229, 1995, pp. 5–28.
Translated by A. Yu. Yeremin. 相似文献
3.
4.
S. N. Petrakov B. I. Drevko L. A. Fomenko V. G. Kharchenko 《Chemistry of Heterocyclic Compounds》1991,27(7):800-800
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 7, p. 996, July, 1991. 相似文献
5.
A. F. Pronin V. G. Kharchenko A. A. Bagatur'yants 《Chemistry of Heterocyclic Compounds》1976,12(12):1338-1340
The electronic structure of the thiapyrylium cation with allowance for and neglect of the 3d orbitals of sulfur was investigated by the self-consistent field MO LCAO method within the CNDO/2 (complete neglect of differential overlap) approximation. Inclusion of the 3d AO of sulfur in the basis leads to slight redistribution of the electron density to favor equalization of the charges on the carbon atoms. A qualitative correlation of the calculated populations of the atoms with the chemical shifts of the PMR spectrum of the thiapyrylium cation was obtained.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 12, pp. 1627–1629, December, 1976. 相似文献
6.
V. G. Kharchenko S. N. Chalaya T. M. Konovalova 《Chemistry of Heterocyclic Compounds》1975,11(2):125-136
The literature data touching upon the synthesis of thiapyrylium salts and the stability of the thiapyrylium cation as compared with its isoelectronic analogs, as well as the nucleophilic, oxidation, anion-exchange, and other reactions of the salts with substituted and unsubstituted thiapyrylium cations are examined in this review. 相似文献
7.
Apparent two-dimensional behavior of TiO2 nanotubes revealed by light absorption and luminescence 总被引:1,自引:0,他引:1
Bavykin DV Gordeev SN Moskalenko AV Lapkin AA Walsh FC 《The journal of physical chemistry. B》2005,109(18):8565-8569
Optical absorption and photoluminescence (PL) properties of colloidal TiO(2) nanotubes, produced by the alkali hydrothermal method, were studied at room temperature in the range 300-700 nm. Nanotubes having an internal diameter in the range 2.5-5 nm have very similar optical properties, in contrast to the expected behavior for quasi-1-D systems. This is explained by the complete thermal smearing of all 1-D effects, due to the large effective mass of charge carriers in TiO(2), resulting in an apparent 2-D behavior of TiO(2) nanotubes. 相似文献
8.
Binding of bis-picolylamine-naphthalene diimide-peptide nucleic acid conjugates to complementary DNA is strongly dependent upon Zn2+; ultimately, hybridization is switched ON in the presence muM Zn2+. 相似文献
9.
-Ketols formed as a result of intramolecular cyclization of 1,5-diketones by alkaline condensation of aldehydes with ketones are converted to 9-R-sym-octahydroxanthenes by the action of acids. Treatment of the -ketols with acids in the presence of hydrogen sulfide leads to the corresponding 9-R-sym-octahydrothioxanthenes. The spectral characteristics of the compounds obtained are given, and some of their properties are described.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 12, pp. 1615–1619, December, 1978. 相似文献
10.
A. F. Pronin J. Kovač R. Kada V. G. Kharchenko 《Chemistry of Heterocyclic Compounds》1979,15(12):1279-1283
The a complexes of furan, thiophene, pyrrole, pyridine, and benzene with the hydride ion were calculated by the MINDO/3 method. The affinities of the indicated aromatic rings and a number of substituted furans for the H– ion were estimated. It is shown that the relative magnitude of the affinity correlates qualitatively with the experimental data on the relative rates of the reaction of the examined compounds with nucleophilic reagents. The following order of increasing reactivities of unsubstituted aromatic rings was obtained: pyrrole相似文献