全文获取类型
收费全文 | 586篇 |
免费 | 3篇 |
专业分类
化学 | 315篇 |
晶体学 | 4篇 |
力学 | 22篇 |
数学 | 28篇 |
物理学 | 220篇 |
出版年
2022年 | 6篇 |
2018年 | 7篇 |
2017年 | 6篇 |
2016年 | 10篇 |
2014年 | 6篇 |
2013年 | 11篇 |
2011年 | 10篇 |
2010年 | 15篇 |
2009年 | 8篇 |
2008年 | 12篇 |
2007年 | 26篇 |
2006年 | 14篇 |
2005年 | 12篇 |
2004年 | 11篇 |
2003年 | 17篇 |
2002年 | 27篇 |
2001年 | 13篇 |
2000年 | 9篇 |
1999年 | 8篇 |
1998年 | 15篇 |
1996年 | 8篇 |
1994年 | 6篇 |
1993年 | 13篇 |
1991年 | 8篇 |
1990年 | 7篇 |
1989年 | 10篇 |
1988年 | 6篇 |
1987年 | 11篇 |
1986年 | 16篇 |
1985年 | 16篇 |
1984年 | 8篇 |
1983年 | 10篇 |
1982年 | 9篇 |
1981年 | 13篇 |
1980年 | 11篇 |
1979年 | 7篇 |
1978年 | 11篇 |
1977年 | 6篇 |
1976年 | 13篇 |
1975年 | 9篇 |
1974年 | 12篇 |
1973年 | 11篇 |
1972年 | 9篇 |
1971年 | 8篇 |
1970年 | 11篇 |
1969年 | 9篇 |
1967年 | 10篇 |
1966年 | 8篇 |
1965年 | 7篇 |
1959年 | 7篇 |
排序方式: 共有589条查询结果,搜索用时 15 毫秒
581.
582.
L. N. Strunov V. G. Antonenko S. B. Borzakov Yu. T. Borzunov E. V. Chernykh V. F. Chumakov Yu. I. Ivanshin S. A. Dolgii M. Finger Jr. M. Finger L. B. Golovanov D. K. Guriev A. Janata A. D. Kovalenko V. A. Krasnov N. A. Kuzmin A. N. Livanov P. K. Maniakov E. A. Matyushevsky A. A. Morozov G. P. Nikolaevsky A. A. Nomofilov Tz. Panteleev I. L. Pisarev Yu. P. Polunin A. N. Prokofiev V. Yu. Prytkov P. A. Rukoyatkin V. I. Sharov R. A. Shindin M. Slunečka V. Slunečková A. Yu. Starikov T. A. Vasiliev I. P. Yudin I. V. Zaitsev A. A. Zhdanov V. N. Zhmyrov 《The European physical journal. Special topics》2008,162(1):125-132
The measurements of np-spin observables at 0° have been performed for the first time on the Delta-Sigma experimental facility of LHE JINR up to
P
n
= 4.5 GeV/c using the monochromatic neutron beam. They include detailed measurements of the Δσ
L(np) spin differences and the study of the np → pn elastic charge-exchange process. In the Δσ
L(np) and −Δσ
L(I = 0) energy dependencies over the energy region Tkin = 1.2–3.7 GeV the peculiarity at 1.8 GeV was observed. Such energy behavior was predicted by the QCD approach as a signal
of the NN → 6q phase transition. For the exhaustive investigation of this effect it is necessary to measure the energy dependence of the
complete set of np observables with both longitudinal (L) and transverse (T) polarizations of the neutron beam and proton target. This will allow Direct Reconstruction of all three NN forward Scattering Amplitudes (DRSA) to be performed, and the observed peculiarity to be checked around Tkin = 1.8 GeV and at the higher energies using the Argand diagrams method. 相似文献
583.
We present Monte Carlo simulations of the reaction kinetics corresponding to two coupled catalytic oscillators in the case when oscillations result from the interplay between the reaction steps and adsorbate-induced surface restructuring. The model used is aimed to mimic oscillations on a single nm catalyst particle with two kinds of facets or on two catalyst particles on a support. Specifically, we treat the NO reduction by H(2) on a composite catalyst containing two catalytically active Pt(100) parts connected by an inactive link. The catalyst is represented by a rectangular fragment of a square lattice. The left- and right-hand parts of the lattice mimic Pt(100). With an appropriate choice of the model parameters, these sublattices play a role of catalytic oscillators. The central catalytically inactive sublattice is considered to be able only to adsorb NO reversibly and can be viewed as a Pt(111) facet or a support. The interplay of the reactions running on the catalytically active areas occurs via NO diffusion over the boundaries between the sublattices. Using this model, we show that the coupling of the catalytically active sublattices may synchronize nearly harmonic oscillations observed on these sublattices and also may result in the appearance of aperiodic partly synchronized oscillations. The spatio-temporal patterns corresponding to these regimes are nontrivial. In particular, the model predicts that, due to phase separation, the reaction may be accompanied by the formation of narrow NO-covered zones on the left and right sublattices near the boundaries between these sublattices and the central sublattice. Such patterns cannot be obtained by using the conventional mean-field reaction-diffusion equations based on the mass-action law. The experimental opportunities to observe the predicted phenomena are briefly discussed. (c) 2001 American Institute of Physics. 相似文献
584.
Our measurements indicate that under temperature-programmed conditions the N2O decomposition occurs on Rh(1 0 0) between 60 and 140 K and results in the appearance of two N2 desorption peaks related to N2 molecules leaving the surface during and after N2O dissociation events, respectively. Both peaks are observed even at low initial coverages. This and other features of N2 desorption are explained by using Monte Carlo simulations taking into account attractive N2O-O lateral interactions stabilizing N2O adsorption. The results presented are compared with those obtained earlier for Rh(1 1 0). 相似文献
585.
586.
A. N. Prokofiev C. E. Allgower L. S. Azhgirej J. Ball M. Beddo Y. Bedfer A. Boutefnouchet J. Bystricky Ph. Demierre J. -M. Fontaine V. Ghazikhanian D. Grosnick Z. Janout Z. F. Janout V. A. Kalinnikov T. E. Kasprzyk B. A. Khachaturov R. Kunne F. Lehar A. de Lesquen D. Lopiano V. N. Matafonov I. L. Pisarev N. M. Piskunov A. A. Popov D. Rapin J. -L. Sans H. M. Spinka G. D. Stoletov S. Trentalange Yu. A. Usov V. V. Vikhrov B. Vuaridel C. A. Whitten A. A. Zhdanov 《Czechoslovak Journal of Physics》1999,49(2):29-36
Method and results of the beam polarization measurements are presented. The measurements were carried out at the proton polarized beam of Saturne-II accelerator as well as at the JINR (Dubna) synchrophasotron vector polarized deuteron beam. The analysis of the elastic (quasi-elastic) pp-scattering polarization is used as a method of the polarization measurements. The energy range of the measurement is 1.0≤T p ≤2.8 GeV for polarized proton and 1.66≤T d ≤7.3 GeV for polarized deuteron beams. 相似文献
587.
V. P. Zhdanov 《JETP Letters》2011,93(9):551-554
Recent experiments indicate that many viruses can move between cells directly via the cell-cell contacts without diffusing
through the extracellular environment. We present the first generic kinetic model describing intracellular viral kinetics
in combination with this mode of spread of virions. Our Monte Carlo simulations show the specifics of the propagation of the
infection front in this case. 相似文献
588.
Prekul A. F. Shchegolikhina N. I. Belosludov V. R. Gets K. V. Zhdanov R. K. Bozhko Yu. Yu. Belosludov R. V. Chen L.-J. Khoroshilov A. L. Bogach A. V. Demishev S. V. Krasikov K. M. Polovets S. E. Shitsevalova N. Yu. Filipov V. B. Sluchanko N. E. Shilkin D. A. Fedyanin A. A. Zabolotnykh A. A. Volkov V. A. Ivanov A. V. Zipunova E. V. Khilkov S. A. Chernozatonskii L. A. Demin V. A. 《JETP Letters》2022,116(8):586-588
JETP Letters - An Erratum to this paper has been published: https://doi.org/10.1134/S002136402234001X 相似文献
589.
Scaling of alkali lasers to higher powers requires using multiple diode lasers for pumping. The first (to our knowledge) results of a cw rubidium laser pumped by two laser diode arrays are presented. A slope efficiency of 53%, total optical efficiency of 46%, and output power of 17 W have been demonstrated. 相似文献