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991.
L. F. Mashadieva Z. T. Gasanova Yu. A. Yusibov M. B. Babanly 《Russian Journal of Inorganic Chemistry》2017,62(5):598-603
Phase equilibria in the Cu–Cu2Se–As were investigated by differential thermal analysis and X-ray powder diffraction analysis. Informative plots describing this system were constructed, viz., the polythermal sections Cu0.667Se0.333–As, Cu0.667Se0.333–Cu0.735As0.265, and Cu0.8Se0.2–As, the isothermal section of the phase diagram at 300 K, and the projection of the liquidus surface. The obtained results differ from the published data in length of fields of primary crystallization of phases and in coordinates of a number of invariant equilibrium points. 相似文献
992.
M. G. Demidova N. O. Shaparenko T. Yu. Podlipskaya A. I. Bulavchenko 《Russian Journal of Inorganic Chemistry》2017,62(6):715-722
Stable SiO2 and TiO2 organosols were prepared by hydrolyzing tetraethyl orthosilicate (TEOS) in the presence of 6–12 M NH3 and titanium(IV) isopropylate (TTIP) in reverse microemulsions of 0.12–0.25 M bis(2-ethylhexyl) sulfosuccinate (Aerosol OT, AOT) in n-decane with the aqueous pseudophase content of 2–3 vol %, 0.018–0.090 M TEOS, and 0.15–0.55 vol %, 0.003–0.025 M TTIP. The degree of hydrolysis was monitored by IR spectroscopy (for TEOS) and spectrophotometry (for TTIP). Oxide nanoparticles were characterized by photon-correlation spectroscopy (PCS) (D h = 8–100 nm) and laser electrophoresis (ζ-potential = 7.4–11.6 mV). The occurrence of surface potential made it possible to separate the oxides from the excess of surfactant by nonaqueous electrophoresis and to determine particle sizes (7–40 nm) by means of transmission electron microscopy (TEM). 相似文献
993.
E. Yu. Matveev S. S. Akimov A. S. Kubasov A. I. Nichugovskii A. S. Nartov V. M. Retivov K. Yu. Zhizhin N. T. Kuznetsov 《Russian Journal of Inorganic Chemistry》2017,62(6):808-813
The reactions of 1,4-dioxane-substituted closo-decaborate anion ([B10H9O2C4H8]–) with metal acetylenides, diethyl malonate, ethyl acetoacetate, triethyl orthoformate, acetylacetone, and malonodinitrile were studied. The reactions were shown to be accompanied with substituent ring opening and attachment of the corresponding pendant functional group. The obtained compounds were characterized by various physicochemical methods (IR and polynuclear NMR spectroscopy, ESI mass spectrometry). 相似文献
994.
L. D. Popov V. V. Tkachev Yu. P. Tupolova S. A. Borodkin G. V. Shilov E. A. Ugolkova O. I. Askalepova A. S. Burlov V. V. Lukov I. N. Shcherbakov S. I. Levchenkov V. V. Minin 《Russian Journal of Inorganic Chemistry》2017,62(7):893-899
o-Tosylaminobenzaldehyde dimethylpyrimidyl hydrazone and its copper(II), nickel(II), and zinc(II) complexesare synthesized and studied. According to the X-ray diffraction data, the zinc(II) complex has the structure of a tetragonal pyramid with the N3O donor ligand environment. According to EPR and magnetochemistry data, the copper(II) complex has a similar structure of the chelate core. In the nickel(II) complex, the solvent molecule completes the coordination core to an octahedron. 相似文献
995.
S. I. Bezzubov A. A. Bilyalova I. V. Kuznetsova K. G. Pavlov Yu. M. Kiselev V. D. Dolzhenko 《Russian Journal of Inorganic Chemistry》2017,62(8):1085-1089
A new cyclometalated iridium(III) complex [Ir(L)2(Hdcbpy)] (1) has been synthesized, where L is 1-benzyl-2-phenylbenzimidazole and Hdcbpy is monoprotonated 4,4′-dicarboxy-2,2′-bipyridine. The structure of complex 1 has been determined by X-ray diffraction. The optical properties of complex 1 have been studied, and the quantum yield of luminescence has been measured. 相似文献
996.
The solubility was studied in the system NaCl–AlCl3?SrCl2–HCl–H2O of the eutonic type at 25°C in the section 28 wt % HCl. It was determined that it is possible to derive equations of the solubility surface of crystallizing salts and to calculate the composition of the eutonic solution. 相似文献
997.
L. I. Demina L. G. Kuz’mina S. V. Demin N. A. Shokurova V. I. Zhilov A. Yu. Tsivadze 《Russian Journal of Inorganic Chemistry》2017,62(11):1536-1543
The complex formation of lithium with benzo-15-crown-5 (B15C5) was investigated. The complexes LiB15C5H2OX, where X = Cl? (1), I? (2), (3), (5), and LiBF4B15C5 (4) were synthesized and studied by IR spectroscopy. Complexes 1–4 were examined by X-ray diffraction. According to IR spectroscopy data, the crown ether conformation changes upon dissolution. The interaction of the extracted complex with the solvent was identified. 相似文献
998.
L. S. Skogareva S. Yu. Kottsov T. O. Shekunova A. E. Baranchikov O. S. Ivanova A. D. Yapryntsev V. K. Ivanov 《Russian Journal of Inorganic Chemistry》2017,62(9):1141-1146
It has been shown for the first time that the use of hydrogen peroxide allows precipitation of rare earth orthophosphates (La–Tb) from phosphoric acid solutions at temperatures below 100°C. Either anhydrous or hydrated orthophosphates with monazite or rhabdophane structure, respectively, can be obtained depending on rare earth element position in lanthanide series and precipitation conditions (orthophosphoric acid and hydrogen peroxide concentration). Hydrated orthophosphates with rhabdophane structure can be prepared by precipitation with hydrogen peroxide for all studied rare earth elements. 相似文献
999.
M. O. Agafonkina N. P. Andreeva Yu. I. Kuznetsov S. F. Timashev 《Russian Journal of Physical Chemistry A, Focus on Chemistry》2017,91(8):1414-1421
The adsorption of substituted 1,2,3-benzotriazoles (R-BTAs) onto copper is measured via ellipsometry in a pure borate buffer (pH 7.4) and satisfactorily described by Temkin’s isotherm. The adsorption free energy (?ΔG a 0 ) values of these azoles are determined. The (?ΔG a 0 ) values are found to rise as their hydrophobicity, characterized by the logarithm of the partition coefficient of a substituted BTA in a model octanol–water system (logP), grows. The minimum concentration sufficient for the spontaneous passivation of copper (C min) and a shift in the potential of local copper depassivation with chlorides (E pt) after an azole is added to the solution (i.e., ΔE = E pt in ? E pt backgr characterizing the ability of its adsorption to stabilize passivation) are determined in the same solution containing a corrosion additive (0.01М NaCl) for each azole under study. Both criteria of the passivating properties of azoles (logC min and ΔE) are shown to correlate linearly with logP, testifying to the role played by surface activity of this family of organic inhibitors in protecting copper in an aqueous solution. 相似文献
1000.
E. Yu. Tyulyaeva N. G. Bichan T. N. Lomova A. S. Semeikin 《Russian Journal of Inorganic Chemistry》2017,62(12):1576-1583
The spectral (UV–Vis, IR, and NMR 1H) properties and the state of oxorhenium(V) complexes with 5,15-bis(4′-methoxyphenyl)-3,7,13,17-tetramethyl-2,8,12,18-tetraethylporphin H2P (O=Re(X)P) in protic solvents have been studied depending on the axial trans-ligand X– (X = Cl, OPh, or OH). The O=Re(Cl)P, O=Re(OPh)P, and O=Re(OH)P in AcOH and CF3COOH are subjected to reaction of substitution their axial ligands with solvent molecules or anions, while remaining stable to the dissociation of M–N bonds and to oxidation both to the macrocyclic ligand and to the central metal cation. Quantitative parameters of the coordination of molecular oxygen by O=Re(Cl)P in 17.4–18.2 M H2SO4 to form O=Re(O2)P+ · Cl– have been obtained, these parameters being independent of the initial H2SO4 concentration. The character of peripheral functional substituents in H2P has been shown to be responsible for the stability of the studied oxo complexes to chemical oxidation in aerated acids. 相似文献