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101.
Formation of x-ray images by the action of an optical image on a diffracting lithium niobate crystal
V. N. Trushin A. A. Zholudev M. A. Faddeev E. V. Chuprunov A. F. Khokhlov 《Technical Physics》1997,42(9):1052-1054
A possible mechanism for the formation and processing of an x-ray image using a corresponding optical image as a template
is considered. The method is based on the thermal influence of light on the x-ray diffraction parameters of an LiNbO3 crystal. A mechanism for the influence of the gradients of the temperature fields formed in the crystal on the x-ray structural
parameters of the crystal is proposed. Information which permits the evaluation of some practical aspects of the application
of the observed effect in technology is given.
Zh. Tekh. Fiz. 67, 76–79 (September 1997) 相似文献
102.
G. A. Akopdzhanov V. B. Anikeev V. A. Bezzubov S. P. Denisov A. A. Durum Yu V. Gilitsky S. N. Gurzhiev V. M. Korablev V. I. Koreshev A. V. Kozelov E. A. Kozlovsky V. I. Kurbakov V. V. Lipaev V. A. Onuchin A. M. Rybin Yu M. Sapunov A. A. Schukin M. M. Soldatov D. A. Stoyanova K. I. Trushin I. A. Vasilyev V. I. Yakimchuk S. A. Zvyagintsev 《The European Physical Journal C - Particles and Fields》2005,40(3):343-347
103.
D. I. Tetelbaum S. A. Trushin A. N. Mikhaylov V. K. Vasil'ev G. A. Kachurin S. G. Yanovskaya D. M. Gaponova 《Physica E: Low-dimensional Systems and Nanostructures》2003,16(3-4):410
The influence of P ion doping on the photoluminescence (PL) of the system of nanocrystals in SiO2 matrix (SiO2:Si) both without annealing and after annealing at various temperatures (provided before and after additional P implantation) is investigated. The Si and P implantation was carried out with ion energies of 150 keV and doses ΦSi=1017 cm−2 and ΦP=(0.1–300)×1014 cm−2 (current density j3 μAcm−2). The system after Si implantation was formed at 1000°C and 1100°C (2 h). For the case of SiO2:Si system as-implanted by P, the intensity of PL was drastically quenched, but partially retained. As for the step-by-step annealing (at progressively increased temperatures) carried out after P implantation, the sign and degree of doping effect change with annealing temperature. The possible mechanisms of these features are discussed. 相似文献
104.
高能重离子碰撞中正负荷电粒子比单事例起伏研究 总被引:2,自引:0,他引:2
用强子和弦级联模型,JPCIAE及相应的Monte Carlo事例产生器,研究相对论性核–核碰撞中有限快度区间内正负荷电粒子比单事例起伏与能量、中心度、共振态衰变及快度间隔的关系.JPCIAE模型能够较好地符合CERN/SPS能区Pb+Pb碰撞的实验结果.本文还用此模型预言了RHIC能区Au+Au碰撞和ALICE能区Pb+Pb碰撞中的正负荷电粒子比单事例起伏.可以看出碰撞能量、中心度、共振态衰变及快度间隔对正负荷电粒子比单事例起伏的影响都不大. 相似文献
105.
106.
We show that the pseudospin, being an additional degree of freedom for carriers in graphene, can be efficiently controlled by means of the electron-electron interactions which, in turn, can be manipulated by changing the substrate. In particular, an out-of-plane pseudospin component can occur leading to a zero-field Hall current as well as to polarization-sensitive interband optical absorption. 相似文献
107.
We develop a Galois theory for systems of linear difference equations with periodic parameters, for which we also introduce linear difference algebraic groups. We apply this to constructively test if solutions of linear q-difference equations, with q ∈ ?* and q not a root of unity, satisfy any polynomial ζ-difference equations with ζ t = 1, t ≥ 1. 相似文献
108.
The formation of the impurity phase in materials containing nanopores is investigated theoretically. The formation of impurity clusters on the inner surface of pores is studied using the thermodynamic approach. The most advantageous states of metal impurities in silicon are determined, and comparison with available experimental data is carried out. The possibility of the formation of cobalt nanoclusters in subsurface cavities in copper is substantiated theoretically. 相似文献
109.
Theoretical study was performed to investigate how the hydration of cadmium ca-tion influences the structure and properties of guanine.The aqueous environment was simulated by both explicit solvent(1-5 water molecules) model and implicit solvent model.For complexes in which Cd2+ attached to the N(7) and O(6) sites of guanine,energy analysis together with the Natural Bonding Orbital(NBO) analysis were performed to elucidate the bonding characteristics in detail.The most stable structures are penta-coordinate complexes without aqua ligand located at the guanine site.Higher number of water ligands corresponds to higher stabilization energies.Average bonding energies of G-Cd increase with the number of water molecules.Bonding energies of water ligands depend on its position in the complexes.The charge distribution of guanine changed with increasing the number of water ligands,which may also influence the base-pairing pattern of guanine.There is positive charge transfer from guanine to aqua ligand as the number of the hydration waters increases.IEFPCM optimization has results comparable to the [CdG(H2O)5]2+ structure 5a. 相似文献
110.
以水溶性聚合物为保护剂,采用化学还原法制备了银纳米粒子,分别利用透射电子显微镜、紫外可见光谱、同步光散射光谱等手段对其进行了表征,并探索了制备银纳米粒子的最佳实验条件。通过将银纳米粒子-聚合物溶液进行脱水,得到含有银纳米粒子的固态聚合物膜。将固态聚合物膜重新溶解于水,其水溶液的紫外可见光谱与脱水前的溶液进行了比较,发现两者性质并无明显差异。因此,将银纳米粒子分散固定在聚合物膜中是一种崭新而有效的银纳米粒子制备和存储方法。 相似文献