全文获取类型
收费全文 | 68篇 |
免费 | 1篇 |
专业分类
电工技术 | 1篇 |
化学工业 | 18篇 |
金属工艺 | 5篇 |
机械仪表 | 1篇 |
建筑科学 | 1篇 |
能源动力 | 1篇 |
轻工业 | 1篇 |
水利工程 | 1篇 |
无线电 | 7篇 |
一般工业技术 | 18篇 |
冶金工业 | 14篇 |
自动化技术 | 1篇 |
出版年
2021年 | 1篇 |
2019年 | 3篇 |
2016年 | 1篇 |
2014年 | 2篇 |
2011年 | 2篇 |
2010年 | 2篇 |
2009年 | 3篇 |
2008年 | 2篇 |
2006年 | 2篇 |
2002年 | 2篇 |
2001年 | 1篇 |
2000年 | 1篇 |
1998年 | 3篇 |
1997年 | 1篇 |
1996年 | 1篇 |
1995年 | 1篇 |
1994年 | 1篇 |
1993年 | 3篇 |
1989年 | 1篇 |
1988年 | 2篇 |
1986年 | 1篇 |
1984年 | 2篇 |
1983年 | 1篇 |
1981年 | 1篇 |
1980年 | 1篇 |
1979年 | 5篇 |
1978年 | 1篇 |
1977年 | 4篇 |
1976年 | 2篇 |
1975年 | 3篇 |
1974年 | 2篇 |
1973年 | 2篇 |
1972年 | 5篇 |
1966年 | 2篇 |
1965年 | 1篇 |
1964年 | 1篇 |
排序方式: 共有69条查询结果,搜索用时 15 毫秒
1.
This paper studies a system of partial differential equations modelling the behaviour of a reverse flow reactor. For the parameters appropriate for the oxidation of ammonia on a Pt/Al2O3 catalyst in a typical laboratory set-up, the reactor may be split into regions where approximate formulas that determine its behaviour are deduced. Numerical calculations are presented and can be used to compare with the analytical formulas. The physical insight gained from the asymptotic analysis suggests a new switching strategy which is the subject of numerical experiments. The switching strategy is found to be efficient at minimising the ammonia exiting the reactor after reversal. 相似文献
2.
3.
Vladislav Sadykov Vladimir Sobyanin Natalia Mezentseva Zakhar Vostrikov Vladimir Pelipenko Sergey Tikhov Lyudmila Bobrova Julian R.H. Ross Vladimir Ulyanitskii 《Fuel》2010,89(6):1230-180
Active components comprised of fluorite-like Lnx(Ce0.5Zr0.5)1−xO2−y (Ln = La, Pr, Sm) and perovskite-like La0.8Pr0.2Mn0.2Cr0.8O3 mixed oxides and their composites with yttria-doped zirconia (YSZ) promoted by precious metals (Pt, Ru) and/or Ni were supported on several types of heat-conducting substrates (compressed Ni-Al foam, Fecralloy foil or gauze protected by corundum layer, Cr-Al-O microchannel cermets, titanium platelets protected by oxidic layer) as well as on honeycomb corundum monolithic substrate. These structured catalysts were tested in pilot-scale reactors in the reactions of steam reforming of methane, selective oxidation of decane and gasoline and steam/autothermal reforming of biofuels (ethanol, acetone, anisole, sunflower oil). Applied procedures of supporting nanocomposite active components on monolithic/structured substrates did not deteriorate their coking stability in real feeds with a small excess of oxidants, which was reflected in good middle-term (up to 200 h) performance stability promising for further up-scaling and long-term tests. Equilibrium yield of syngas at short contact times was achieved by partial oxidation of decane and gasoline without addition of steam usually required to prevent coking. For the first time possibility of successive transformation of biofuels (ethanol, acetone, anisole, sunflower oil) into syngas at short contact times on monolithic catalysts was demonstrated. This was provided by a proper combination of active component, thermal conducting monolithic substrates and unique evaporation/mixing unit used in this research. 相似文献
4.
D. W. Palmer V. A. Dravin V. M. Konnov E. A. Bobrova N. N. Loiko S. G. Chernook A. A. Gippius 《Semiconductors》2001,35(3):325-330
Light-emitting diodes based on GaAs crystals ion-implanted with ytterbium and oxygen were fabricated. The current-voltage and capacitance-voltage characteristics of these diodes were analyzed. The deep-level centers were studied by the deep-level transient spectroscopy. The electroluminescence spectra of the structures include the emission lines related to optical transitions within the 4f shell of Yb3+ ions. 相似文献
5.
6.
7.
8.
K. K. Azroyan G. I. Bobrova A. V. Luikov G. D. Rabinovich 《Journal of Engineering Physics and Thermophysics》1966,11(1):35-39
The authors have made an experimental examination and verification of the molecular separation effect in binary mixtures under the influence of viscous momentum transfer. 相似文献
9.
10.