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781.
In this paper, the transition wavelength and wave function overlap of type-II InxGa1-xAs/GaAs1-ySby quantum wells are numerically calculated using a 4-band k · p Hamiltonian model. The simulation results indicate that absorption wavelength from 2 to 4?μm can be achieved with a strain compensated quantum well structure. The transition wavelength and wave function overlap can be optimized by properly selecting the thicknesses and composition of the quantum well layers. 相似文献
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Cutler P Bell DJ Birrell HC Connelly JC Connor SC Holmes E Mitchell BC Monté SY Neville BA Pickford R Polley S Schneider K Skehel JM 《Electrophoresis》1999,20(18):3647-3658
A single dose of puromycin aminonucleoside (PAN) given parenterally to rats induces ultrastructural glomerular changes and a nephrotic syndrome similar in many respects to human minimal change nephropathy. The exact aetiologies of both the human and the experimental syndromes are unknown, and are probably multifactorial. However, among the observed consequences in humans and rats is increased plasma protein excretion in urine, beginning in the latter typically 3-6 days after PAN administration. In view of this, two-dimensional polyacrylamide gel electrophoresis (2-D PAGE) has been used to profile urinary proteins during PAN-induced nephrotoxicity and subsequent recovery in the rat. In addition, urinary high performance liquid chromatography (HPLC) profiles and high resolution proton nuclear magnetic resonance (NMR) spectroscopy has been utilised to simultaneously detect toxin-induced changes in the relative concentrations of a number of metabolites. The proteomic approach, in conjunction with these other techniques, has the potential to provide significantly more mechanistic information than is provided readily by traditional clinical chemistry. 相似文献
783.
Zhang YZ Mallik UP Clérac R Rath NP Holmes SM 《Chemical communications (Cambridge, England)》2011,47(25):7194-7196
Two cyano-bridged single-molecule magnets of {Fe(III)(4)Ni(II)(2)} and {Fe(III)(6)Ni(II)(3)} stoichiometry are described via their magnetic properties described in the frame of geometrical core distortions and orientations of their local anisotropy axes. 相似文献
784.
Dr. Maart van Druenen Dr. Timothy Collins Dr. Fionán Davitt Dr. Jessica Doherty Dr. Gillian Collins Prof. Dr. Zdeněk Sofer Prof. Justin D. Holmes 《Chemistry (Weinheim an der Bergstrasse, Germany)》2020,26(72):17581-17587
Black phosphorus (BP) has extraordinary properties, but its ambient instability remains a critical challenge. Functionalization has been employed to overcome the sensitivity of BP to ambient conditions while preserving its properties. Herein, a simultaneous exfoliation–functionalization process is reported that functionalizes BP flakes during exfoliation and thus provides increased protection, which can be attributed to minimal exposure of the flakes to ambient oxygen and water. A tetrabutylammonium salt was employed for intercalation of BP, resulting in the formation of flakes with large lateral dimensions. The addition of an aryl iodide or an aryl iodonium salt to the exfoliation solvent creates a scalable strategy for the production of functionalized few-layer BP flakes. The ambient stability of functionalized BP was prolonged to a period of one week, as revealed by STEM, AFM, and X-ray photoelectron spectroscopy. 相似文献
785.
Shi Bai Caitlin M. Quinn Sean T. Holmes Cecil Dybowski 《Magnetic resonance in chemistry : MRC》2020,58(11):1010-1017
We report 43Ca and 13C solid-state nuclear magnetic resonance (NMR) spectroscopic studies of the ethylene glycol solvate of atorvastatin calcium. The 13C and 43Ca chemical shift and 43Ca quadrupolar coupling tensor parameters are reported. The results are interpreted in terms of the reported X-ray diffraction crystal structure of the solvate and are compared with the NMR parameters of atorvastatin calcium trihydrate, the active pharmaceutical ingredient in Lipitor®. Hartree–Fock and density functional theory calculations of the NMR parameters based on a cluster model derived from the optimized X-ray diffraction crystal structure of the ethylene glycol solvate of atorvastatin calcium are in reasonable agreement with the experimental 43Ca and 13C NMR measurables. 相似文献
786.
Dutta Dhrubajyoti Basu Rajlaxmi Banerjee Soumitro Holmes Violeta Mather Peter 《Nonlinear dynamics》2018,94(4):2979-2993
Nonlinear Dynamics - Many physical situations involve chaotic systems implemented in hardware. Among them one-dimensional piecewise linear maps are popular candidates for such applications because... 相似文献
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