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91.
Ewa Rozycka‐Sokolowska Bernard Marciniak Volodymyr Pavlyuk 《Acta Crystallographica. Section C, Structural Chemistry》2006,62(4):o162-o164
The planar benzene rings in the title compound, C15H16O2, are inclined at an angle of 82.61 (9)° to one another. There are two intramolecular hydrogen bonds of types O—H⋯π and C—H⋯O. The molecules are linked by strong O—H⋯O hydrogen bonds into a one‐dimensional network, which is compared with that of related compounds. 相似文献
92.
We propose a system of first-order equations of motion all solutions of which are solutions of a system of second-order equations of motion for the supersymmetric Yang–Mills theory with a scalar multiplet. We find N = 1 transformations under which the systems of first- and second-order equations of motion are invariant. 相似文献
93.
Pavlo Solokha Serena De Negri Adriana Saccone Volodymyr Pavlyuk Bernard Marciniak Jean‐Claude Tedenac 《Acta Crystallographica. Section C, Structural Chemistry》2007,63(2):i13-i16
Single crystals of diterbium dinickel trimagnesium, Tb2Ni2Mg3, were synthesized from the elements by induction melting. The novel compound crystallizes in the space group Cmmm with one Mg atom of site symmetry mmm and the Tb, Ni and other Mg atom in m2m positions. This ternary compound represents a new structure type that is derived from Ru3Al2B2 by way of Wyckoff site distribution. The two‐layer structure of Tb2Ni2Mg3 is a new representative of a homologous linear structure series of general formula R′k+nX2nR′′2m+k based on structural fragments of the α‐Fe, CsCl and AlB2 structure types. The Tb atoms in the structure are enclosed in 17‐vertex polyhedra, while rhombododecahedra and distorted rhombododecahedra surround the Mg atoms, and equatorially tricapped trigonal prisms form around the Ni atoms. All interatomic distances indicate metallic type bonding. 相似文献
94.
A. A. Kaminskii A. F. Konstantinova V. P. Orekhova A. V. Butashin R. F. Klevtsova A. A. Pavlyuk 《Crystallography Reports》2001,46(4):665-672
Monoclinic α-KRE(WO4)2 crystals are grown. Their structure is described in two crystallographic settings. The principal refractive indices are determined and the coefficients and characteristic wavelengths are used for calculating refractive indices by the Selmeyer formulas. The data on the anisotropic parametric Raman generation in these crystals under the picosecond pumping are discussed. 相似文献
95.
The title compound is prepared from the elements (670 K, 3 d; annealing at 1070 K, 3 h) and its structure is determined by single crystal XRD. 相似文献
96.
Yu. I. Slyvka A. V. Pavlyuk B. R. Ardan N. T. Pokhodilo E. A. Goreshnik P. Yu. Demchenko 《Russian Journal of Inorganic Chemistry》2012,57(6):815-821
Copper(I) ??-complexes of the compositions [Cu(C12H13N5O)(NO3)] · 0.5H2O (1) and [Cu(C12H13N5O)(CF3COO)] (2) (C12H13N5O is N-allyl-5-amino-1-phenyl-1H-1,2,3-triazole-4-carboxamide) were obtained by alternating-current electrochemical synthesis, and their crystal structures were studied by X-ray crystallography. Crystals of the compounds are monoclinic, space group C2/c with the unit cell parameters a = 21.3976(15) ?, b = 8.0335(4) ?, c = 18.6027(13) ?, ?? = 114.422(2)°, V = 2911.6(3) ?3, Z = 8 for 1; and a = 18.3578(18) ?, b = 9.8700(10) ?, c = 20.9094(18) ?, ?? = 106.883(3)°, V = 3625.3(6) ?3, Z = 8 for 2. In both structures, N-allyl-5-amino-1-phenyl-1H-1,2,3-triazole-4-carboxamide acts as a bridging tridentate chelating ligand and forms with copper(I) atoms infinite chains containing [CuC4NO] seven-membered rings. The chains are linked to form a three-dimensional framework due to hydrogen bonds (N)H??O, which involve nitrogen atoms of amino and amide groups of the ligand. The coordination sphere of Cu(I) atoms consists of olefin bond of the allyl C=C group, O atom of the carbonyl group, N(3) atom of the triazole nucleus of the organic ligand, and an oxygen atom of nitrate (compound 1) or trifluoroacetate (compound 2) anion, respectively. 相似文献
97.
Ihor Chumak Volodymyr Pavlyuk Grygoriy Dmytriv Hermann Pauly Helmut Ehrenberg 《ChemInform》2013,44(8):no-no
Li1.95Ag1.05In3 is prepared from the elements (Ta crucible, 1100 °C for 15 min followed by annealing at 150 °C for 1 month) and characterized by single crystal XRD and TB‐LMTO‐ASA computations. 相似文献
98.
Sergey F. Solodovnikov Zoya A. Solodovnikova Lyudmila I. Yudanova Anatoly A. Pavlyuk 《Journal of solid state chemistry》2009,182(7):1935-1943
Orthorhombic lithium zinc molybdate was first chosen and explored as a candidate for double beta decay experiments with 100Mo. The phase equilibria in the system Li2MoO4-ZnMoO4 were reinvestigated, the intermediate compound Li2Zn2(MoO4)3 of the α-Cu3Fe4(VO4)6 (lyonsite) type was found to be nonstoichiometric: Li2−2xZn2+x(MoO4)3 (0≤x≤0.28) at 600 °C. The eutectic point corresponds to 650 °C and 23 mol% ZnMoO4, the peritectic point is at 885 °C and 67 mol% ZnMoO4. Single crystals of the compound were prepared by spontaneous crystallization from the melts and fluxes. In the structures of four Li2−2xZn2+x(MoO4)3 crystals (x=0; 0.03; 0.21; 0.23), the cationic sites in the face-shared octahedral columns were found to be partially filled and responsible for the compound nonstoichiometry. It was first showed that with increasing the x value and the number of vacancies in M3 site, the average M3-O distance grows and the lithium content in this site decreases almost linearly. Using the low-thermal-gradient Czochralski technique, optically homogeneous large crystals of lithium zinc molybdate were grown and their optical, luminescent and scintillating properties were explored. 相似文献
99.
100.