全文获取类型
收费全文 | 206篇 |
免费 | 15篇 |
国内免费 | 1篇 |
专业分类
电工技术 | 3篇 |
化学工业 | 45篇 |
金属工艺 | 4篇 |
机械仪表 | 4篇 |
建筑科学 | 4篇 |
能源动力 | 34篇 |
轻工业 | 20篇 |
水利工程 | 13篇 |
石油天然气 | 1篇 |
无线电 | 23篇 |
一般工业技术 | 36篇 |
冶金工业 | 8篇 |
原子能技术 | 3篇 |
自动化技术 | 24篇 |
出版年
2023年 | 4篇 |
2022年 | 10篇 |
2021年 | 10篇 |
2020年 | 8篇 |
2019年 | 15篇 |
2018年 | 20篇 |
2017年 | 15篇 |
2016年 | 9篇 |
2015年 | 5篇 |
2014年 | 8篇 |
2013年 | 20篇 |
2012年 | 15篇 |
2011年 | 33篇 |
2010年 | 19篇 |
2009年 | 14篇 |
2008年 | 3篇 |
2007年 | 1篇 |
2006年 | 1篇 |
2005年 | 3篇 |
2003年 | 1篇 |
2000年 | 1篇 |
1998年 | 2篇 |
1997年 | 1篇 |
1996年 | 1篇 |
1994年 | 1篇 |
1986年 | 1篇 |
1985年 | 1篇 |
排序方式: 共有222条查询结果,搜索用时 93 毫秒
221.
Alexander Baer Ingo Hoffmann Najet Mahmoudi Alexandre Poulhazan Matthew J. Harrington Georg Mayer Stephan Schmidt Emanuel Schneck 《Small (Weinheim an der Bergstrasse, Germany)》2023,19(22):2300516
For prey capture and defense, velvet worms eject an adhesive slime which has been established as a model system for recyclable complex liquids. Triggered by mechanical agitation, the liquid bio-adhesive rapidly transitions into solid fibers. In order to understand this mechanoresponsive behavior, here, the nanostructural organization of slime components are studied using small-angle scattering with neutrons and X-rays. The scattering intensities are successfully described with a three-component model accounting for proteins of two dominant molecular weight fractions and nanoscale globules. In contrast to the previous assumption that high molecular weight proteins—the presumed building blocks of the fiber core—are contained in the nanoglobules, it is found that the majority of slime proteins exist freely in solution. Only less than 10% of the slime proteins are contained in the nanoglobules, necessitating a reassessment of their function in fiber formation. Comparing scattering data of slime re-hydrated with light and heavy water reveals that the majority of lipids in slime are contained in the nanoglobules with homogeneous distribution. Vibrating mechanical impact under exclusion of air neither leads to formation of fibers nor alters the bulk structure of slime significantly, suggesting that interfacial phenomena and directional shearing are required for fiber formation. 相似文献