Author Keywords: Attenuated total reflection (ATR); IR-ATR spectra; Horizontal ATR technique; Reaction monitoring 相似文献
全文获取类型
收费全文 | 789篇 |
免费 | 30篇 |
国内免费 | 1篇 |
专业分类
电工技术 | 13篇 |
综合类 | 4篇 |
化学工业 | 225篇 |
金属工艺 | 13篇 |
机械仪表 | 12篇 |
建筑科学 | 51篇 |
矿业工程 | 3篇 |
能源动力 | 10篇 |
轻工业 | 65篇 |
水利工程 | 15篇 |
无线电 | 53篇 |
一般工业技术 | 167篇 |
冶金工业 | 22篇 |
原子能技术 | 3篇 |
自动化技术 | 164篇 |
出版年
2023年 | 6篇 |
2022年 | 14篇 |
2021年 | 28篇 |
2020年 | 10篇 |
2019年 | 16篇 |
2018年 | 14篇 |
2017年 | 17篇 |
2016年 | 32篇 |
2015年 | 24篇 |
2014年 | 27篇 |
2013年 | 40篇 |
2012年 | 36篇 |
2011年 | 50篇 |
2010年 | 31篇 |
2009年 | 33篇 |
2008年 | 42篇 |
2007年 | 52篇 |
2006年 | 39篇 |
2005年 | 15篇 |
2004年 | 16篇 |
2003年 | 17篇 |
2002年 | 17篇 |
2001年 | 9篇 |
2000年 | 10篇 |
1999年 | 24篇 |
1998年 | 9篇 |
1997年 | 13篇 |
1996年 | 8篇 |
1995年 | 12篇 |
1994年 | 13篇 |
1993年 | 8篇 |
1992年 | 11篇 |
1991年 | 8篇 |
1990年 | 10篇 |
1989年 | 10篇 |
1988年 | 9篇 |
1987年 | 9篇 |
1986年 | 9篇 |
1985年 | 6篇 |
1984年 | 4篇 |
1983年 | 6篇 |
1982年 | 3篇 |
1980年 | 4篇 |
1979年 | 5篇 |
1978年 | 11篇 |
1977年 | 7篇 |
1975年 | 3篇 |
1973年 | 4篇 |
1927年 | 2篇 |
1901年 | 2篇 |
排序方式: 共有820条查询结果,搜索用时 0 毫秒
141.
The infrared horizontal ATR technique was adapted to be applied for in situ reaction monitoring even at high pressure and high temperature. Different types of reactors and flow cells were built which can be used for recording IR ATR spectra at pressures up to 200 bar and temperatures up to 300°C.
The use of the horizontal ATR technique is shown by the following application examples:
• addition reaction of n-butyl isocyanate with butyric alcohol;
• investigation of the equilibrium of isocyanate, HCl and carbamic acid chloride at elevated pressure and temperature;
• monitoring the polycondensation of bifunctional alcohols and carbonic acids;
• recording spectra of polymer melts at 280°C.
142.
143.
Monostrand Prestressing with unbonded Tendons. Application, Experiences, Advantages, Economic Viability Prestressing of strands with unbonded tendons has proved to be effective in practice without reservation. The additional procedure is not inconsiderable, but should be regarded in its context, since it will be more than compensated for by the convincing advantages like crack‐freeness, low deflection of components, etc., in the long run. The article below discusses recent findings and experiences. Additionally, it deals with expanded fields of application, such as partial prestressing, flat slabs, hollow‐block slabs with long span, and, as a quantum leap, the prestressed flat slab made of steel fibre concrete. 相似文献
144.
Johann Vollmann Christina N Fritz Helmut Wagentristl Peter Ruckenbauer 《Journal of the science of food and agriculture》2000,80(9):1300-1306
Seed protein content is important for both feed and food utilisation of soybean. In soybeans grown in Central Europe, considerable variation in protein content was due to seasonal influences, as demonstrated in different experiments from a breeding programme. In soybean genotypes of early maturity groups, average to high protein content (range 399—476 g kg−1) was found in years with high air temperature and moderate rates of rainfall during the seed‐filling period, whereas seed protein content was drastically reduced (range 265–347 g kg−1) in seasons of insufficient nitrogen fixation or higher amounts of precipitation during seed filling. In a set of 60 genotypes, protein content was increased both by late nitrogen fertilisation before the onset of seed filling and by inoculation of seed with nitrogen‐fixing rhizobia. Despite the high degree of environmental modification, genetic variation of seed protein content was considerable, and genotype × environment interaction was of low magnitude. Therefore selection of early maturing soybean genotypes with improved seed protein content appears to be feasible and is only limited by the moderately negative correlation between protein content and seed yield. © 2000 Society of Chemical Industry 相似文献
145.
146.
147.
148.
Elias J Gizowska M Brodard P Widmer R Dehazan Y Graule T Michler J Philippe L 《Nanotechnology》2012,23(25):255705
Here, an easy and effective electrochemical route towards the synthesis of gold thin films with well-controlled roughness, morphology and crystallographic orientation is reported. To control these different factors, the applied potential during deposition played a major role. A tentative nucleation and growth mechanism is demonstrated by means of electrochemical characterizations and a formation mechanism is proposed. Interestingly, the differences in geometry and orientation of the different gold deposits have shown a clear correlation with the electrocatalytical activity in the case of oxygen sensing. In addition, not only the electrocatalytical activity but also the surface-enhanced Raman scattering of the gold deposits have been found to depend both on the roughness and on the size of the surface nanostructures, allowing a fine tuning by controlling these two parameters during deposition. 相似文献
149.
150.
A new experimental approach for the characterization of the diametrical elastic modulus of individual nanowires is proposed by implementing a micro/nanoscale diametrical compression test geometry, using a flat punch indenter. A 250 nm diameter single crystal silicon nanowire is compressed inside of a scanning electron microscope. Since silicon is highly anisotropic, the wire crystal orientation in the compression axis is determined by electron backscatter diffraction. In order to analyze the load-displacement compression data, a two-dimensional analytical closed-form solution based on a classical contact model is proposed. The results of the analytical model are compared with those of finite element simulations and to the experimental diametrical compression results and show good agreement. 相似文献