全文获取类型
收费全文 | 125篇 |
免费 | 5篇 |
专业分类
电工技术 | 1篇 |
化学工业 | 32篇 |
机械仪表 | 4篇 |
建筑科学 | 1篇 |
能源动力 | 4篇 |
轻工业 | 18篇 |
无线电 | 13篇 |
一般工业技术 | 27篇 |
冶金工业 | 3篇 |
自动化技术 | 27篇 |
出版年
2023年 | 6篇 |
2022年 | 11篇 |
2021年 | 11篇 |
2020年 | 10篇 |
2019年 | 9篇 |
2018年 | 8篇 |
2017年 | 4篇 |
2016年 | 9篇 |
2015年 | 4篇 |
2014年 | 6篇 |
2013年 | 6篇 |
2012年 | 5篇 |
2011年 | 17篇 |
2010年 | 4篇 |
2009年 | 4篇 |
2008年 | 3篇 |
2007年 | 5篇 |
2006年 | 2篇 |
2005年 | 3篇 |
1998年 | 1篇 |
1995年 | 1篇 |
1994年 | 1篇 |
排序方式: 共有130条查询结果,搜索用时 15 毫秒
41.
Hesham Elhariry Abeer A. Abuzaid Ghada M. Khiralla Youssuf Gherbawy 《International Journal of Food Science & Technology》2014,49(4):1132-1141
The present work aimed to determine the bioactive compounds in two rosemary water extracts (RWE1 and RWE2) and to assess their antimicrobial, anti‐adhesive and antibiofilm potentials against the food‐related Bacillus and Pseudomonas species at concentrations; 4, 8, 12, 16 and 20 mg mL?1. Phenolic compounds and isoflavones in the RWEs were determined using HPLC. The concentrations of most bioactive compounds of RWE1 (benzoic, ellagic, gallic and rosmarinic acids, daidzein and genistein) were higher than that of RWE2. The MIC90 of RWE1 and RWE2 against all tested bacteria was 12 and 16 mg mL?1, respectively. The anti‐adhesive and antibiofilm doses were higher than MIC90. RWE1 and RWE2 showed potential reduction in the bacterial cell adhesion to HEp‐2 cells – 17.5–64.7 and 12.2–52.9%, respectively. In conclusion, this study emphasises the effective use of RWE as a natural anti‐adhesive and antibiofilm agent against Bacillus and Pseudomonas, without difficult extraction procedure. 相似文献
42.
Yan Zhou Tadanori Kurosawa Wei Ma Yikun Guo Lei Fang Koen Vandewal Ying Diao Chenggong Wang Qifan Yan Julia Reinspach Jianguo Mei Anthony Lucas Appleton Ghada I. Koleilat Yongli Gao Stefan C. B. Mannsfeld Alberto Salleo Harald Ade Dahui Zhao Zhenan Bao 《Advanced materials (Deerfield Beach, Fla.)》2014,26(22):3767-3772
43.
44.
45.
Holger Keitel Ghada KarakiTom Lahmer Susanne NikullaVolkmar Zabel 《Engineering Structures》2011,33(12):3726-3736
The process of analysis and design in structural engineering requires the consideration of different partial models of loading, structural material, structural elements and analysis type, among others. All of these, need an adequate modelling as individuals and as coupled sets to catch a behaviour of interest. This paper proposes an innovative algorithm to facilitate quantitative measures to evaluate coupled partial models in structural engineering. Adapting graph theory and utilising variance based sensitivity analysis enable evaluation and drawing conclusions regarding the combinations of partial models in an engineering system. The algorithm is applied in bridge engineering, analysing bridge behaviour considering dynamic loading, creep and shrinkage material models and further considering geometric nonlinear effects. 相似文献
46.
H. M. Hassan O. M. O. Habib Evelin B. Moawad Ghada G. El‐Bana A. M. El Defrawy 《Lubrication Science》2011,23(3):119-138
2‐Methyl‐benzo[d][1,3]oxazin‐4‐one ( 1 ) was used as a key intermediate for the synthesis of different benzoxazinone and quinazolinone derivatives. In order to evaluate the applicability of the synthesised benzoxazinones and quinazolinones as antioxidant additives for lube oil, these antioxidant additives decomposed the alkyl peroxide radicals and/or alkyl hydrogen peroxides to produce esters, ketone and hydroxy compounds rather than carboxylic acids. The compounds that showed antioxidant efficiency were tested as corrosion inhibitors using three types of metals: Cu, Al and Fe. Copyright © 2011 John Wiley & Sons, Ltd. 相似文献
47.
Rutin and esculin have been polymerised by laccase. Five fractions with M(w)ˉ between 2127.42 and 8331.85g/mol for oligorutins, and between 688.12 and 6973g/mol for oligoesculins, were obtained. Fourier transformed infrared analysis showed that oligorutins were formed through C-C, C-O and CO linkages, while oligoesculins were obtained through C-C linkages. Monomers, their oligomers and their metabolites exhibited no mutagenic effect. Oligorutins and oligoesculins were more efficient in reducing the mutagenicity of methyl methanesulphonate, by, respectively, 69% and 64.8% in the presence of Salmonella typhimurium TA104, and 79.7% and 68.9% in the presence of S. typhimurium TA102, than were their monomers. The same oligomers revealed greater significant inhibitory effect of 2-aminoanthracene mutagenicity (respectively 82.4% and 79.3% in the presence of S. typhimurium TA104, and 89.2% and 82.9% in the presence of S. typhimurium TA102), than their monomers. Our results strongly suggest the enhancement of the tested monomer antimutagenicity after polymerisation. 相似文献
48.
49.
Super-resolution techniques are used to reconstruct an image with a high resolution from one or more low-resolution image(s). In this paper, we proposed a single image super-resolution algorithm. It uses the nonlocal mean filter as a prior step to produce a denoised image. The proposed algorithm is based on curvelet transform. It converts the denoised image into low and high frequencies (sub-bands). Then we applied a multi-dimensional interpolation called Lancozos interpolation over both sub-bands. In parallel, we applied sparse representation with over complete dictionary for the denoised image. The proposed algorithm then combines the dictionary learning in the sparse representation and the interpolated sub-bands using inverse curvelet transform to have an image with a higher resolution. The experimental results of the proposed super-resolution algorithm show superior performance and obviously better-recovering images with enhanced edges. The comparison study shows that the proposed super-resolution algorithm outperforms the state-of-the-art. The mean absolute error is 0.021 ± 0.008 and the structural similarity index measure is 0.89 ± 0.08. 相似文献
50.
Al-Afandy Khalid A. El-Shafai Walid El-Rabaie El-Sayed M. Abd El-Samie Fathi E. Faragallah Osama S. El-Mhalaway Ahmed Shehata Ahmed M. El-Banby Ghada M. El-Halawany Mohamed M. 《Multimedia Tools and Applications》2018,77(19):25709-25759
Multimedia Tools and Applications - Digital watermarking is an efficient and promising mechanism for protecting the copyright of the transmitted multimedia information. Thus, this paper presents... 相似文献