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1.
E. A. Ekimov E. L. Gromnitskaya D. A. Mazalov A. F. Pal’ V. V. Pichugin S. Gierlotka B. Palosz J. A. Kozubowski 《Physics of the Solid State》2004,46(4):755-757
Superhard nanodiamond-SiC ceramics are prepared by infiltrating liquid Si into porous nanodiamond compacts under pressure.
Synthesized samples are 2.2 mm thick and 3–4 mm in diameter. The effect of particle size of dynamically synthesized nanodiamond
powders on silicon infiltration and SiC phase formation is studied. It is established that silicon does not penetrate into
the pores of nanodiamond powders if the original particle size is smaller than 0.5–1.0 μm. The critical pore size for infiltration
is 100–200 nm. A study of the microstructure of the samples showed the presence of the nanometer-and submicron-scale SiC phase.
The ultrasound velocities are measured in the prepared compacts, and the elastic moduli are calculated.
__________
Translated from Fizika Tverdogo Tela, Vol. 46, No. 4, 2004, pp. 734–736.
Original Russian Text Copyright ? 2004 by Ekimov, Gromnitskaya, Mazalov, Pal’, Pichugin, Gierlotka, Palosz, Kozubowski. 相似文献
2.
S. B. Érenburg L. N. Mazalov N. V. Bausk M. K. Drozdova 《Journal of Structural Chemistry》1994,35(4):517-522
SKα, SKβ, ClKβ, ClKβ, and PdLβ2 X-ray fluorescent and PdK EXAFS spectra were obtained for some organic solutions of dialkyl sulfide complexes with palladium
chloride. Solvent effects on the electronic and spatial structure of complexes in solution are discussed. In the benzene solution
of [PdCl22(C6H13)2S], complex molecules interact with solvent molecules along a coordinate that is perpendicular to the plane of the complex
molecule.
Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences. Translated fromZhurmal Strukturnoi Khimii, Vol. 35, No. 4, pp. 105c111, July–August, 1994.
Translated by L. Smolina 相似文献
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G. F. Khudorozhko L. G. Bulusheva L. N. Mazalov V. E. Fedorov I. P. Asanov É. A. Kravtsova G. K. Parygina Yu. V. Mironov 《Journal of Structural Chemistry》1996,37(4):626-632
An X-ray amorphous phase of molybdenum tetrasulfide with the analytical formula MoS4 has been sythesized. Quantum chemical modeling of the suggested local structure of MoS4 and EHT calculation of the electronic structure of the basic (Mo2S4)4+ fragment are reported. The electronic structure of molybdenum tetrasulfide and its lithium intercalates was investigated
by X-ray emission and X-ray photoelectron spectroscopy. It is shown that the change in the electronic structure of the starting
molybdenum tetrasulfide to four lithium atoms per formula unit in the intercalate may be considered in the rigid band model.
Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences. Translated fromZhurnal Strukturnoi Khimii, Vol. 37, No. 4, pp. 727–734, July–August, 1996.
Translated by L. Smolina 相似文献
9.
Intermolecular interactions in solid hydrogen fluoride are studied by the combined quantum chemical and X- ray diffraction
method. The structure of crystalline HF is modeled by (HF)n chains (n =2, 3,...,20, by an (HF)45 cluster consisting of five (HF)9 chains, and by an (HF)108 cluster consisting of twelve (HF)9 chains with nearly zero dipole moment. The quantum chemical calculations of the clusters are performed by the semiempirical
AM1 method, which is most suitable for electronic structure investigations of hydrogen fluoride, as shown by comparing the
X- ray experimental and theoretical spectra. The theoretical X- ray spectra are also compared with the experimental FKα spectra of gaseous and solid hydrogen fluoride. For more detailed studies of electronic interactions in crystalline HF, fragrnent
analysis of MOs of the clusters with respect to the MOs of the central molecule is carried out.
Translated fromZhumal Strukturnoi Khimii, Vol. 38, No. 4, pp. 686–695, July–August, 1997. 相似文献
10.
X-Ray and X-ray Photoelectron Spectroscopy Studies of the Electronic Structure of Borane Derivatives
V. D. Yumatov E. A. Il'inchik L. N. Mazalov O. V. Volkov V. V. Volkov 《Journal of Structural Chemistry》2001,42(2):281-295
This paper reviews the results of electronic structure studies of a number of typical members of borane series by X-ray and X-ray photoelectron spectroscopy using quantum chemical calculations. Fragment analysis of the molecular orbital structure is given. The nature of chemical interaction in boron cluster compounds is studied on models: simple molecules NH3, BH3, and BF3 and their adducts NH3BH3 and NH3BF3. The electronic structure of B10H12L2 type compounds with Lewis bases L = NH3, (CH3)2S, (C6H5)3P is analyzed. The complexes are considered in terms of the concept of donor–acceptor interactions between the fragments. The donor–acceptor bond has contributions from both occupied and vacant acceptor orbitals. X-ray photoelectron data on the charged states of atoms in the compounds are overviewed. Electron distribution in complex compounds with transition metals [(1,2-B9C2H11)2M]–, M = FeIII, CoIII, NiIII, and NiIV and chain type polycobaltocarborane anions {[(3)-1,2-B9C2H11]2Co
n
[(3,6)-1,2-B8C2H10]n-1}
n–
, n = 2-7, is considered. 相似文献