全文获取类型
收费全文 | 299篇 |
免费 | 13篇 |
国内免费 | 1篇 |
专业分类
电工技术 | 8篇 |
化学工业 | 56篇 |
金属工艺 | 7篇 |
机械仪表 | 12篇 |
建筑科学 | 6篇 |
能源动力 | 13篇 |
轻工业 | 20篇 |
无线电 | 16篇 |
一般工业技术 | 88篇 |
冶金工业 | 36篇 |
原子能技术 | 7篇 |
自动化技术 | 44篇 |
出版年
2023年 | 6篇 |
2022年 | 11篇 |
2021年 | 15篇 |
2020年 | 10篇 |
2019年 | 2篇 |
2018年 | 10篇 |
2017年 | 5篇 |
2016年 | 9篇 |
2015年 | 6篇 |
2014年 | 7篇 |
2013年 | 13篇 |
2012年 | 15篇 |
2011年 | 24篇 |
2010年 | 16篇 |
2009年 | 19篇 |
2008年 | 19篇 |
2007年 | 16篇 |
2006年 | 11篇 |
2005年 | 11篇 |
2004年 | 5篇 |
2003年 | 9篇 |
2002年 | 13篇 |
2001年 | 3篇 |
2000年 | 4篇 |
1999年 | 1篇 |
1998年 | 8篇 |
1997年 | 3篇 |
1996年 | 2篇 |
1995年 | 5篇 |
1994年 | 6篇 |
1993年 | 5篇 |
1992年 | 5篇 |
1991年 | 1篇 |
1990年 | 1篇 |
1989年 | 4篇 |
1988年 | 1篇 |
1987年 | 1篇 |
1985年 | 1篇 |
1982年 | 1篇 |
1980年 | 2篇 |
1979年 | 2篇 |
1978年 | 2篇 |
1976年 | 1篇 |
1962年 | 1篇 |
1961年 | 1篇 |
排序方式: 共有313条查询结果,搜索用时 15 毫秒
311.
312.
Angela Dziedzic Rafal Szelenberger Michal Kacprzak Piotr Czarny Ewelina Synowiec Joanna Saluk-Bijak Tomasz Sliwinski Marzenna Zielinska Michal Bijak 《International journal of molecular sciences》2022,23(9)
The pathophysiology of atherosclerosis and acute coronary syndrome (ACS) is related to interactions between immune cells, endothelium, and blood platelets. An increasing number of reports confirm the link between excessive immune activation and cellular cross-talk with ACS incidence. Our genetic and proteomic analysis was performed on strictly selected atherosclerotic patients with non-fatal ACS without typical risk factors and healthy donors. Results showed changes in the gene expression levels of the various inflammatory factors derived from the peripheral blood cells that drive the over-activation of the immune system. The enhanced activation of the immune system may lead to the overexpression of the pro-inflammatory mediators, which causes self-perpetuating machinery of processes associated with thrombosis. In our preliminary study, we confirmed an altered expression of genes associated with the inflammation and overall interaction of the vascular microenvironment. Furthermore, 5 of 92 analyzed genes, CCL2, CCR2, CSF2, GZMB, and ICOS, were expressed only in patients with ACS. In conclusion, the augmented expression of the pro-inflammatory genes from the peripheral blood cells may be a crucial genetic factor leading to the occurrence of acute inflammation and thus be significant in ACS pathogenesis. 相似文献
313.
Antonio G. De Crisci Rafal Gieleciak Md Hosnay Mobarok Mohamed Ali Tri Dung Ngo Keyur Goswami Ataullah Khan Jinwen Chen 《加拿大化工杂志》2023,101(5):2633-2645
Bitumen-derived asphaltenes are rich in carbon but of low value and contain other elements such as nitrogen, sulphur, oxygen, vanadium, and nickel. Their use as a feedstock for producing carbon fibre (CF) is largely under-investigated. In this study, electrospinning was used to create asphaltene fibres (AFs), which is a pre-carbon fibre material, from asphaltenes. Various operational parameters were investigated in order to improve the spinning abilities, such as the concentration of asphaltenes in toluene, pumping rate, voltage, and distance between the tip of the needle to the collector. Results indicated that asphaltenes concentrations had the greatest effect on the quality of the produced AFs, with the range of asphaltenes concentrations from 45 to 50 wt.% being suitable for producing the AFs, while voltage, pumping rate, and tip distance had less of an effect on electrospun AF production. 相似文献