全文获取类型
收费全文 | 167篇 |
免费 | 0篇 |
专业分类
电工技术 | 2篇 |
化学工业 | 7篇 |
金属工艺 | 21篇 |
机械仪表 | 4篇 |
矿业工程 | 2篇 |
水利工程 | 4篇 |
石油天然气 | 10篇 |
无线电 | 24篇 |
一般工业技术 | 36篇 |
冶金工业 | 5篇 |
原子能技术 | 50篇 |
自动化技术 | 2篇 |
出版年
2021年 | 2篇 |
2019年 | 2篇 |
2016年 | 8篇 |
2015年 | 1篇 |
2014年 | 2篇 |
2013年 | 5篇 |
2012年 | 4篇 |
2011年 | 5篇 |
2010年 | 4篇 |
2009年 | 3篇 |
2008年 | 3篇 |
2007年 | 2篇 |
2005年 | 2篇 |
2004年 | 3篇 |
2003年 | 3篇 |
2002年 | 2篇 |
2001年 | 3篇 |
2000年 | 4篇 |
1998年 | 1篇 |
1997年 | 1篇 |
1994年 | 1篇 |
1990年 | 2篇 |
1988年 | 1篇 |
1987年 | 1篇 |
1986年 | 6篇 |
1984年 | 1篇 |
1983年 | 1篇 |
1982年 | 2篇 |
1981年 | 3篇 |
1980年 | 5篇 |
1979年 | 7篇 |
1978年 | 1篇 |
1977年 | 4篇 |
1976年 | 5篇 |
1975年 | 1篇 |
1974年 | 6篇 |
1973年 | 4篇 |
1972年 | 10篇 |
1971年 | 6篇 |
1970年 | 5篇 |
1969年 | 1篇 |
1968年 | 5篇 |
1966年 | 8篇 |
1965年 | 7篇 |
1964年 | 3篇 |
1963年 | 2篇 |
1961年 | 3篇 |
1960年 | 1篇 |
1959年 | 1篇 |
1958年 | 1篇 |
排序方式: 共有167条查询结果,搜索用时 15 毫秒
1.
The effect of thermal annealing in the temperature range T a=300–600°C of films of microcrystal-line hydrogenated silicon (μc-Si:H) lightly doped with boron on the spectral dependences of the absorption coefficient (α) at photon energies hν=0.8–2.0 eV, dark conductivity (σd), and photoconductivity (Δσph) was studied at room temperature. With increasing annealing temperature, a nonmonotonic variation of α (at hν<1.2 eV), σd, and Δσph was observed. The data obtained are attributed to a change in the concentration of electrically active impurities and formation of defects, caused by hydrogen effusion and bond restructuring at high annealing temperatures. 相似文献
2.
3.
Changes in the dark conductivity of erbium-doped amorphous hydrogenated silicon (a-Si:H(Er)) films after their preliminary illumination at room temperature have been studied. The effect of a compensating boron impurity on the photoinduced change in the conductivity of a-Si:H(Er) films is analyzed. It is established that the magnitude and the sign of the change in conductivity depend on the duration of illumination and position of the Fermi level in the mobility gap. Possible mechanisms leading to a photoinduced change in the conductivity of a-Si:H(Er) films are discussed. 相似文献
4.
5.
A. G. Kazanskii E. I. Terukov A. V. Ziminov O. B. Gusev A. V. Fenukhin A. G. Kolosko I. N. Trapeznikova Yu. A. Nikolaev Bey Modu 《Technical Physics Letters》2005,31(9):782-784
We have studied the luminescence and optical absorption of thin films of copper phthalocyanine (CuPc) with a modified molecular
structure of the peripheral fragments. The coefficient of absorption in the near-IR and visible range (absorption by defects)
and the photoluminescence spectra exhibit correlated changes depending on the modification of the CuPc structure. 相似文献
6.
A. V. Emelyanov A. G. Kazanskii P. K. Kashkarov O. I. Konkov N. P. Kutuzov V. L. Lyaskovskii P. A. Forsh M. V. Khenkin 《Technical Physics Letters》2014,40(2):141-144
We have studied the Raman spectra of initially amorphous hydrogenated silicon (a-Si:H) films upon their exposure to femtosecond laser-radiation pulses with the fluence varied within 30–155 mJ/cm2. The distribution of the volume fraction of a crystalline phase over the surface of processed films is determined for the first time and a correlation is established between changes in this value and the hydrogen content in a-Si:H films upon the crystallization induced by femtosecond laser radiation. 相似文献
7.
8.
9.
D. P. Litevchuk M. F. Kazanskii P. P. Lutsik 《Journal of Engineering Physics and Thermophysics》1972,23(1):909-912
The macropore structure of quartz sand has been studied experimentally by various methods on the basis of various physical phenomena.Translated from Inzhernerno-Fizicheskii Zhurnal, Vol. 23, No. 1, pp. 145–150, July, 1972 相似文献
10.
V. M. Kazanskii Yu. N. Koipish V. Ya. Antonov A. E. Afanas'ev G. M. Borisova D. N. Onchukov A. P. Kuznetsov V. L. Prokof'ev V. I. Dotsenko T. P. Ryzhkova R. N. Kutov E. K. Vishnevskii R. N. Rubinshtein V. K. Kivran R. I. Ayukaev L. I. Guseva L. F. Yankelev A. V. Golubkovich M. V. Petraevskii A. V. Mashkov A. M. Azizov V. A. Kirpikov I. I. Leifman N. M. Belyaev I. N. Manusov V. F. Lyashenko T. I. Nikolaeva I. F. Istratov P. T. Checha V. I. Pogreb L. I. Borovik M. P. Kuz'min O. L. Chistyakov 《Journal of Engineering Physics and Thermophysics》1976,30(4):483-494