全文获取类型
收费全文 | 115篇 |
免费 | 6篇 |
专业分类
电工技术 | 9篇 |
化学工业 | 19篇 |
金属工艺 | 5篇 |
建筑科学 | 4篇 |
能源动力 | 1篇 |
轻工业 | 7篇 |
无线电 | 7篇 |
一般工业技术 | 28篇 |
冶金工业 | 21篇 |
原子能技术 | 8篇 |
自动化技术 | 12篇 |
出版年
2023年 | 1篇 |
2022年 | 3篇 |
2021年 | 1篇 |
2020年 | 1篇 |
2019年 | 3篇 |
2018年 | 4篇 |
2017年 | 1篇 |
2015年 | 4篇 |
2014年 | 3篇 |
2013年 | 7篇 |
2012年 | 4篇 |
2011年 | 8篇 |
2010年 | 5篇 |
2009年 | 3篇 |
2008年 | 5篇 |
2007年 | 5篇 |
2006年 | 3篇 |
2005年 | 4篇 |
2003年 | 3篇 |
2002年 | 1篇 |
2000年 | 3篇 |
1999年 | 1篇 |
1998年 | 6篇 |
1997年 | 3篇 |
1996年 | 4篇 |
1995年 | 4篇 |
1994年 | 4篇 |
1993年 | 3篇 |
1992年 | 2篇 |
1991年 | 3篇 |
1987年 | 2篇 |
1986年 | 2篇 |
1985年 | 3篇 |
1984年 | 1篇 |
1983年 | 2篇 |
1982年 | 3篇 |
1981年 | 1篇 |
1980年 | 1篇 |
1979年 | 1篇 |
1977年 | 1篇 |
1968年 | 1篇 |
1967年 | 1篇 |
排序方式: 共有121条查询结果,搜索用时 15 毫秒
1.
Scientometrics - Computer-assisted methods and tools can help researchers automate the coding process of literature reviews and accelerate the literature review process. However, existing... 相似文献
2.
M. Kolbe J. Brillo I. Egry D. M. Herlach L. Ratke D. Chatain N. Tinet C. Antion L. Battezzati S. Curiotto E. Johnson N. Pryds 《Microgravity science and technology》2006,18(3-4):174-177
Since the beginning of materials science research under microgravity conditions immiscible alloys have been an interesting subject. New possibilities to investigate such systems are offered by containerless processing techniques. Of particular interest is the ternary system Cu-Fe-Co, and its limiting binaries, Cu-Co and Cu-Fe. They all show a metastable miscibility gap in the regime of the undercooled melt. Within the ESA-MAP project “CoolCop”, different aspects of this alloy have been investigated; results obtained so far are reported here. 相似文献
3.
Ammoniaksynthese als Beispiel einer stofflichen Nutzung von intermittierend erzeugtem Wasserstoff 下载免费PDF全文
Simon Schulte Beerbühl Dr. Bärbel Kolbe Dr. Christoph Roosen Prof. Dr. Frank Schultmann 《化学,工程师,技术》2014,86(5):649-657
Producing hydrogen‐rich chemicals, such as methane, ammonia or methanol, from renewable energy may foster the integration of renewables into the current energy system. Here, a flexible ammonia synthesis concept is introduced, which is then compared to the widely discussed power‐to‐gas concepts on a technical and economic level. The current ammonia prices result in comparably high hydrogen‐specific revenues, which imply the ability to operate the system more profitable under fluctuating electricity prices and thereby increase the plant capacity factor. 相似文献
4.
5.
W. Weissflog P. Mckel A. Kolbe H. Kresse G. Pelzl K. Mohr H. Zaschke 《Advanced Synthesis \u0026amp; Catalysis》1984,326(3):457-466
Synthesis and Properties of Liquid Crystalline Derivatives of Rhodanine Substituted benzylidene-rhodanines 3 – 8 were prepared both by condensation of 1 a – f with suitable aldehydes and by acylation of 2a – g with substituted benzoyl chlorides or cinnamoyl chlorid. The mesomorphic properties of the compounds are discussed in respect to molecular structure with the aid of i.r.-, Raman- and u.v./vis-spectra of 3d , 3k , 4 , 5 , 6g , 8a . We have investigated the dielectric and electrooptic behaviour of 31 . 相似文献
6.
Within the framework of a recent criticality safety evaluation (CSE) performed for the licensing of a new commercial wet storage pool using MCNPX-2.5.0 along with the ENDF/B-VII.0 and JEFF-3.1 continuous energy cross-section libraries, the maximum permissible initial fuel-enrichment limit for water reflected configurations was found to be dependant upon the applied neutron cross section library. More detailed investigations showed that the difference is mainly caused by different sublibraries for thermal neutron scattering based on parameterizations of the S(α, β) scattering matrix. This paper addresses the main findings of these investigations and emphasizes which configurations are particularly sensitive to the parameterization of S(α, β) applied in the CSE analysis. The results are presented in an attempt, on the one hand, to assess more precisely the sensitivity upon thermal scattering modeling data in CSE of wet storage pools, and on the other hand, to assess whether the data employed in the most recent neutron data libraries can be considered as an improvement for this type of analyses. 相似文献
7.
8.
9.
10.
Horst Biermann Ulrich Martin Christos G. Aneziris Anja Kolbe Angelika Müller Wolfgang Schärfl Mathias Herrmann 《Advanced Engineering Materials》2009,11(12):1000-1006
Novel composites on basis of austenitic stainless TRIP‐steel as matrix with reinforcements of Mg‐PSZ are presented. Compact rods were produced by cold isostatic pressing and sintering, square honeycomb samples by the ceramic extrusion technique. The samples are characterized by optical and scanning electron microscopy before and after deformation, showing the microstructure and the deformation‐ induced martensite formation. The mechanical properties of samples with 5 vol% zirconia are superior compared to zirconia‐free samples and composites with higher zirconia contents in terms of bending and compression tests. The honeycomb samples exhibit extraordinary high specific energy absorption in compression. 相似文献