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51.
Dassié D Eschbach R Hubert F Hubert P Isaac MC Izac C Leccia F Mennrath P Vareille A Longuemare C Mauger F Danevich F Kouts V Tretyak VI Vassilyev Y Zdesenko Y Barabash AS Kornoukov VN Lepikhin YB Umatov VI Vanushin IA Augier C Blum D Campagne JE Jullian S Lalanne D Laplanche F Natchez F Pichenot G Szklarz G Arnold R Guyonnet JL Lamhamdi T Linck I Piquemal F Scheibling F Brudanin V Egorov V Kochetov O Nozdrin A Vylov T Zaparov S Nicholson HW Sutton CS 《Physical review D: Particles and fields》1995,51(5):2090-2100
52.
Molero D Suárez M Martínez-Alvarez R Verdecia Y Martín N Seoane C Ochoa E 《Magnetic resonance in chemistry : MRC》2004,42(8):704-708
1H and 13C NMR spectroscopic data for 4-aryl-3,4-dihydro-6-methyl-2(1H)pyridone derivatives were fully assigned by a combination of one- and two- dimensional experiments (DEPT, HMBC, HMQC, COSY, NOE). 相似文献
53.
Linck RC Spahn CW Rauchfuss TB Wilson SR 《Journal of the American Chemical Society》2003,125(29):8700-8701
Models for the active site of the acetyl CoA synthase (ACS) were synthesized by attachment of Cu+ and Ni(0) to nickel diaminodithiolate (S2N2) and diamidodithiolate (S2N2') complexes. The Ni-Ni species form stable CO adducts, i.e., [{(CO)2Ni}{NiS2N2'}]2-, whereas the Cu-NiS2N2 and Cu-NiS2N2' models do not. These results provide supporting evidence for a biological role for reduced nickel in ACS. 相似文献
54.
Alhmed Morales Estael Ochoa Margarita Surez Yamila Verdecia Leandro Gonzlez Nazario Martín Margarita Quinteiro Carlos Seoane Jos L. Soto 《Journal of heterocyclic chemistry》1996,33(1):103-107
The title compounds 6 have been prepared in a one-step procedure from the corresponding 4-aryl substituted 5-alkoxycarbonyl-6-methyl-3,4-dihydropyridones 4 in good yields. Quantum chemical calculations reveal a non-planar molecule with a distorted dihydropyridone ring and two favoured conformations. The 13C nmr data and theoretical calculations support a strong push-pull effect on the olefinic moiety. 相似文献
55.
Héctor Novoa de Armas Norbert M. Blaton Oswald M. Peeters Camiel J. De Ranter Margarita Suárez Estael Ochoa Yamila Verdecia Esperanza Salfrán 《Journal of chemical crystallography》2000,30(4):237-243
The synthesis and structural characterization of Methyl 6-chloro-4-(2-chlorophenyl)-5-formyl-2-methyl-1,4-dihydropyridine-3-carboxylate is described. The structure was refined to R1 = 0.0470 for 2665 reflections (with I > 2(I)). Crystal data: C15H13C12NO3, monoclinic,space group P21/c, a = 11.163(9), b = 14.484(8), c = 9.422(7) Å, V = 1512.9(19) Å3, Z = 4. The results of crystallographic and molecular modeling (AM1) were compared. The Cl atom attached to the phenyl group has two possible orientations, having 75% (sp) and 25% (ap) occupancy, respectively. The molecules in the crystal are held together by means of intermolecular hydrogen bonds of the type N=H...O and by C=H...O interactions. 相似文献
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Hctor Novoa De Armas Norbert Blaton Oswald M. Peeters Camiel De Ranter Margarita Surez Emilio Rolando Yamila Verdecia Estael Ochoa Nazario Martín Margarita Quinteiro Carlos Seoane Jos L. Soto 《Journal of heterocyclic chemistry》2000,37(6):1575-1581
A series of substituted 1,4‐dihydropyridines (1,4‐DHPs) has been synthesised following the well‐known Hantzsch's procedure for symmetrical 1,4‐DHP. The structures of these compounds have been thoroughly studied by X‐ray crystallographic analysis and semiempirical (AMI) calculations. A good agreement is found between the theoretical and experimental results. In all cases, the most stable conformation fulfils all the requirements needed for exhibiting an antagonist calcium effect. 相似文献
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Salfrán E Suárez M Molero D Martínez-Alvarez R Verdecia Y Ochoa E Alvarez A Seoane C Herrera A Martín N 《Magnetic resonance in chemistry : MRC》2006,44(6):637-640
The 1H and 13C NMR spectroscopic data for 4-aryl-1,4,5,6,7,8-hexahydro-2,7,7,5-oxo-quinoline 3-substituted derivatives have been fully assigned by the combination of one- and two dimensional experiments (DEPT, HMBC, HMQC, COSY, NOE). 相似文献