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111.
D. M. Tsymbarenko I. A. Martynova N. V. Ryzhkov N. P. Kuz’mina 《Russian Journal of General Chemistry》2017,87(6):1209-1216
Aluminum hydroxocarboxylates derived from butyric, pivalic, valeric, and isovaleric acids were synthesized and characterized. The synthesized hydroxocarboxylates were suspended in isopropanol and reacted with diethylenetriamine and monoethanolamine, which acted as hydrolyzing and complex-forming agents, to obtain precursor solutions for chemical deposition of smooth amorphous alumina films on metal substrates. 相似文献
112.
Physics of Atomic Nuclei - The aneutronic D3–He (deuterium–helium-3) fuel cycle is considered as a viable alternative to D–T (deuterium–tritium) fusion since it is... 相似文献
113.
Konstantin I. Maslakov Yury A. Teterin Mikhail V. Ryzhkov Aleksej J. Popel Anton Yu. Teterin Kirill E. Ivanov Stepan N. Kalmykov Vladimir G. Petrov Ian Farnan 《International journal of quantum chemistry》2019,119(24):e26040
The nature of the chemical bond in UO2 was analyzed taking into account the X-ray photoelectron spectroscopy (XPS) structure parameters of the valence and core electrons, as well as the relativistic discrete variation electronic structure calculation results for this oxide. The ionic/covalent nature of the chemical bond was determined for the UO8 (D4h) cluster, reflecting uranium's close environment in UO2, and the U13O56 and U63O216 clusters, reflecting the bulk of solid uranium dioxide. The bar graph of the theoretical valence band (from 0 to ~35 eV) of XPS spectrum was built such that it was in satisfactory agreement with the experimental spectrum of a UO2 single crystalline thin film. It was shown that unlike the crystal field theory results, the covalence effects in UO2 are significant due to the strong overlap of the U 6p and U 5f atomic orbitals with the ligand orbitals, in addition to the U 6d atomic orbital (AO). A quantitative molecular orbital (MO) scheme for UO2 was built. The contribution of the MO electrons to the chemical bond covalence component was evaluated on the basis of the bond population values. It was found that the electrons of inner valence molecular orbitals (IVMO) weaken the chemical bond formed by the electrons of outer valence molecular orbitals (OVMO) by 32% in UO8 and by 25% in U63O216. 相似文献
114.
A. F. Glova A. Yu. Lysikov D. D. Malyuta S. S. Nelyubin P. I. Peretyatko Yu. F. Ryzhkov 《Physics of Atomic Nuclei》2016,79(14):1663-1670
An experimental installation with a laser plasmatron based on a continuous wave CO2 laser with a radiation power of up to 3.5 kW has been created. The plasmatron design makes it possible to bring out the plasma jet into atmospheric air both along and across the laser beam direction. The spatial temperature distributions on the metal substrate surface heated by the plasma jet are measured. The threshold power for optical discharge maintenance as a function of the gas flow rate and the focal length of the focusing lens are obtained for an Ar and Ar/CH4/H2 gas mixture under atmospheric pressure; the radiation spectrum of the discharge plasma is measured. A one-dimensional model of the discharge for estimation of its geometrical parameters in a convergent laser beam with consideration of radiation refraction on the discharge is given. 相似文献
115.
M. V. Ryzhkov L. D. Finkelshtein É. Z. Kurmaev V. A. Gubanov 《Journal of Structural Chemistry》1995,36(4):578-583
The spin-polarized discrete variational Xa method is used to calculate clusters that model the electronic structures of CuO, La2CuO4, and Nd2CuO4. It, is shown that in each of the compounds the unoccupied portion of the valence band involves mainly the O2p states, the
contributions from the Cu3d orbitals being significantly smaller. The effects of the nature of holes in the valence band and
of the structure of the close environment of copper on the low-energy CuK spectra and the X-ray photoelectron spectra of the
above systems are discussed.
Institute of Solid State Chemistry, Ural Branch, Russian Academy of Sciences. Translated fromZhumal Struktumoi Khimii, Vol. 36, No. 4, pp. 636–643, July–August., 1995.
Translated by I. Izvekova 相似文献
116.
G. A. Obanin A. S. Fokin Ya. V. Burgart O. V. Ryzhkov Z. E. Skryabina V. I. Saloutin O. N. Chupakhin 《Russian Chemical Bulletin》2000,49(7):1231-1236
Methods for the synthesis of the earlier unknownN-substituted 2-(5,6,7,8-tetrafluoro-4-oxo-1,4-dihydroquinolin-3-yl)glycoxylic acids their esters from copper chelate of ethyl
pentafluorobenzoylpyruvate were developed. The structure of intermediate ethyl 4-(R-amino)-2-oxo-3-pentafluorobenzoylbut-3-enoates
is discussed.
Published inIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 7, pp. 1234–1239, July, 2000. 相似文献
117.
M. A. Mochalov R. I. Il’kaev V. E. Fortov A. L. Mikhailov Yu. M. Makarov V. A. Arinin S. K. Grishechkin A. O. Blikov V. A. Ogorodnikov A. V. Ryzhkov V. K. Gryaznov 《JETP Letters》2010,92(5):300-304
The thermodynamic properties of a highly compressed deuterium plasma have been measured using an explosive spherical experimental chamber. The experiment has been performed with an X-ray diffraction complex consisting of three betatrons and a multichannel optoelectronic system of the detection of X-ray images of the process of the explosive spherical compression of deuterium. The density of the shock-compressed deuterium plasma ρ = (4.3 ± 0.7) g/cm3 at the pressure P = 1830 GPa has been detected at the initial pressure of gaseous deuterium P 0 = 267 atm and the temperature T 0 = 10.5°C. Under such conditions, the plasma is strongly nonideal (Γ ~ 450) with the degenerate (nλ e 3 ~ 280) electron component and with an electron density of about 2.8 × 1023 cm?3. 相似文献
118.
119.
Fokin A. S. Burgart Ya. V. Ryzhkov O. V. Saloutin V. I. 《Russian Chemical Bulletin》2001,50(4):689-692
The title compounds react with o-phenylenediamine and o-aminophenol at the ethoxalyl fragment to form heteryl-substituted quinoxalones and benzooxazinones, respectively. o-Aminobenzenethiol acts as both an S-nucleophile replacing the F atom and an N-nucleophile replacing the carbonyl group in the ethoxalyl fragment. Under more drastic conditions, cyclization proceeds to form benzothiazinones. 相似文献
120.
M. V. Ryzhkov V. A. Gubanov Yu. A. Teterin A. S. Baev 《Zeitschrift für Physik B Condensed Matter》1985,59(1):1-6
The electronic structure of the light RE oxides CeO2, Pr2O3 and Nd2O3 has been studied by the cluster discrete variational DV-X method and X-ray photoelectron spectroscopy. The interpretation of XPE spectra basing on the MO model is given. The various electronic states contributions to the chemical bonding in the oxides are investigated. 相似文献