全文获取类型
收费全文 | 3216篇 |
免费 | 13篇 |
国内免费 | 3篇 |
专业分类
化学 | 1204篇 |
晶体学 | 40篇 |
力学 | 98篇 |
数学 | 322篇 |
物理学 | 1568篇 |
出版年
2022年 | 25篇 |
2021年 | 57篇 |
2020年 | 61篇 |
2019年 | 66篇 |
2018年 | 106篇 |
2017年 | 86篇 |
2016年 | 117篇 |
2015年 | 43篇 |
2014年 | 82篇 |
2013年 | 140篇 |
2012年 | 105篇 |
2011年 | 111篇 |
2010年 | 128篇 |
2009年 | 103篇 |
2008年 | 151篇 |
2007年 | 150篇 |
2006年 | 122篇 |
2005年 | 124篇 |
2004年 | 98篇 |
2003年 | 98篇 |
2002年 | 75篇 |
2001年 | 96篇 |
2000年 | 75篇 |
1999年 | 44篇 |
1998年 | 38篇 |
1997年 | 46篇 |
1996年 | 41篇 |
1994年 | 24篇 |
1993年 | 38篇 |
1992年 | 37篇 |
1991年 | 42篇 |
1990年 | 33篇 |
1989年 | 37篇 |
1988年 | 32篇 |
1987年 | 28篇 |
1985年 | 28篇 |
1984年 | 30篇 |
1983年 | 27篇 |
1982年 | 25篇 |
1981年 | 27篇 |
1979年 | 34篇 |
1978年 | 31篇 |
1977年 | 42篇 |
1976年 | 34篇 |
1975年 | 28篇 |
1974年 | 29篇 |
1973年 | 34篇 |
1972年 | 29篇 |
1971年 | 28篇 |
1970年 | 22篇 |
排序方式: 共有3232条查询结果,搜索用时 31 毫秒
1.
Odinokov S. B. Kolyuchkin V. V. Kuz’min D. V. Talalaev V. E. Khanevich P. A. Smirnov A. V. Smirnov L. I. 《Optics and Spectroscopy》2021,129(5):547-553
Optics and Spectroscopy - The scope of problems of embedding personal data when copying holograms on a photopolymer substrate with the maximum preservation of the region of a hologram during its... 相似文献
2.
Smirnov A. M. Kremleva A. V. Sharofidinov Sh. Sh. Bugrov V. E. Romanov A. E. 《Physics of the Solid State》2021,63(6):924-931
Physics of the Solid State - A theoretical model of misfit stress relaxation in film/substrate α-Ga2O3/α-Al2O3 heterostructures with allowance for lattice anisotropy of heterostructure... 相似文献
3.
Acoustical Physics - An adaptive version of the multirank Capon algorithm is constructed for acoustic-source localization by a vertical array in the case of incomplete information on the random... 相似文献
4.
Alexeev S. G. Alexeev K. S. Smirnov V. V. Barbin N. M. 《Russian Journal of General Chemistry》2022,91(1):S1-S12
Russian Journal of General Chemistry - Temperature flammability limits are one of the key indicators of fire and explosion hazard and are used in the development of measures, ensuring fire and... 相似文献
5.
Drichko I. L. Smirnov I. Yu. Bakarov A. K. Bykov A. A. Dmitriev A. A. Galperin Yu. M. 《JETP Letters》2020,112(1):45-52
JETP Letters - The DC and AC conductivities of the n-GaAs/AlAs heterostructure with two filled size quantization levels are studied within a wide magnetic field range. The electron spectrum of such... 相似文献
6.
Turyanskiy A. G. Vorob’ev N. S. Gizha S. S. Makushina V. A. Mikhal’kov Yu. M. Smirnov A. V. Pirshin I. V. Senkov V. M. Shashkov E. V. Fishman R. I. Ziyatdinova M. Z. Komel’kov A. S. 《JETP Letters》2020,112(11):734-738
JETP Letters - The possibility of stable generation of intense characteristic Cs radiation upon electronic excitation of a Mo anode target heat treated in Cs and O2 vapors is demonstrated. The... 相似文献
7.
Optics and Spectroscopy - The luminescence properties of colloidal Ag2S quantum dots (QDs) with ZnS or SiO2 shells coated with thioglycolic or 2-mercaptopropionic acids are comparatively analyzed.... 相似文献
8.
Alena A. Nastulyavichus Irina N. Saraeva Andrey A. Rudenko Roman A. Khmelnitskii Alexander L. Shakhmin Demid A. Kirilenko Pavel N. Brunkov Nikolay N. Melnik Nikita A. Smirnov Andrey A. Ionin Sergey I. Kudryashov 《Particle & Particle Systems Characterization》2020,37(5):2000010
Si nanoparticles (NPs), which are innovative promising light-harvesting components of thin-film solar cells and key-enabling biocompatible theranostic elements of infrared-laser and radiofrequency hyperthermia-based therapies of cancer cells in tumors and metastases, are significantly advanced in their near/mid-infrared band-to-band and free-carrier absorption via donor sulfur-hyperdoping during high-throughput facile femtosecond-laser ablative production in liquid carbon disulfide. High-resolution transmission electron microscopy and Raman microscopy reveal their mixed nanocrystalline/amorphous structure, enabling the extraordinary sulfur content of a few atomic percents and very minor surface oxidation/carbonization characterized by energy-dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy. A 200-nm thick layer of the nanoparticles exhibits near−mid-infrared absorbance, comparable to that of the initial 380-micron thick n-doped Si wafer (phosphor-dopant concentration ≈1015 cm−3), with the corresponding extinction coefficient for the hyperdoped NPs being 4–7 orders higher over the broadband spectral range of 1–25 micrometers. Such ultimate, but potentially tunable mid-IR structured, multi-band absorption of various sulfur-impurity clusters and smooth free-carrier absorption are break through advances in mid-infrared (mid-IR) laser and radiofrequency (RF) hyperthermia-based therapies, as envisioned in the RF-heating tests, and in fabrication of higher-efficiency thin-film and bulk photovoltaic devices with ultra-broad (UV−mid-IR) spectral response. 相似文献
9.
A One-Equation Local Correlation-Based Transition Model 总被引:1,自引:0,他引:1
10.