全文获取类型
收费全文 | 681篇 |
免费 | 31篇 |
出版年
2022年 | 12篇 |
2021年 | 20篇 |
2020年 | 12篇 |
2019年 | 10篇 |
2018年 | 11篇 |
2017年 | 9篇 |
2016年 | 17篇 |
2015年 | 29篇 |
2014年 | 34篇 |
2013年 | 48篇 |
2012年 | 40篇 |
2011年 | 48篇 |
2010年 | 42篇 |
2009年 | 33篇 |
2008年 | 38篇 |
2007年 | 31篇 |
2006年 | 29篇 |
2005年 | 44篇 |
2004年 | 37篇 |
2003年 | 34篇 |
2002年 | 35篇 |
2001年 | 4篇 |
2000年 | 3篇 |
1999年 | 8篇 |
1998年 | 6篇 |
1996年 | 5篇 |
1995年 | 3篇 |
1994年 | 4篇 |
1993年 | 3篇 |
1990年 | 2篇 |
1989年 | 4篇 |
1987年 | 4篇 |
1986年 | 3篇 |
1985年 | 3篇 |
1984年 | 4篇 |
1983年 | 4篇 |
1982年 | 2篇 |
1981年 | 2篇 |
1980年 | 13篇 |
1979年 | 2篇 |
1976年 | 2篇 |
1975年 | 3篇 |
1972年 | 1篇 |
1971年 | 1篇 |
1970年 | 1篇 |
1966年 | 2篇 |
1965年 | 1篇 |
1964年 | 1篇 |
1963年 | 1篇 |
1962年 | 3篇 |
排序方式: 共有712条查询结果,搜索用时 15 毫秒
101.
102.
103.
104.
Kumar Narendra Kumari Vandna Ram Chand Thakur Kiran Tomar Sudhir Kumar 《Applied microbiology and biotechnology》2018,102(4):1599-1615
Applied Microbiology and Biotechnology - Foodstuffs and water are the key sources of cadmium biomagnifiaction. The available strategies to mitigate this problem are unproductive and expensive for... 相似文献
105.
L.V.M. Rao Neeraj Datta M. Mahadevan Sipra Guha-Mukherjee Sudhir K. Sopory 《Phytochemistry》1984,23(9):1875-1879
Of the different hormones tested, cytokinins stimulated nitrate-induced nitrate reductase (NR) activity in the dark. The optimal stimulation was obtained at 16 hr and this was sensitive to tungstate, 6-methylpurine and cycloheximide. The cytokinin stimulation of NR activity was further enhanced by brief irradiation with red light, but this effect was not noticed when leaves were exposed to far-red light. Both kinetin and red light, when given together, or given with a darkness interruption, stimulated the NR activity more than with either of them alone. 相似文献
106.
107.
108.
109.
The berries of the plant Anamirta cocculus afforded picrotin, picrotoxinin, methyl picrotoxate and two new sesquiterpene γ-lactones, dihydroxypicrotoxinin and picrotoxic acid, whose structures were determined by spectroscopic methods. 相似文献
110.
Nakrieko KA Welch I Dupuis H Bryce D Pajak A St Arnaud R Dedhar S D'Souza SJ Dagnino L 《Molecular biology of the cell》2008,19(4):1462-1473
Integrin-linked kinase (ILK) is key for cell survival, migration, and adhesion, but little is known about its role in epidermal development and homeostasis in vivo. We generated mice with conditional inactivation of the Ilk gene in squamous epithelia. These mice die perinatally and exhibit skin blistering and severe defects in hair follicle morphogenesis, including greatly reduced follicle numbers, failure to progress beyond very early developmental stages, and pronounced defects in follicular keratinocyte proliferation. ILK-deficient epidermis shows abnormalities in adhesion to the basement membrane and in differentiation. ILK-deficient cultured keratinocytes fail to attach and spread efficiently and exhibit multiple abnormalities in actin cytoskeletal organization. Ilk gene inactivation in cultured keratinocytes causes impaired ability to form stable lamellipodia, to directionally migrate, and to polarize. These defects are accompanied by abnormal distribution of active Cdc42 to cell protrusions, as well as reduced activation of Rac1 upon induction of cell migration in scraped keratinocyte monolayers. Significantly, alterations in cell spreading and forward movement in single cells can be rescued by expression of constitutively active Rac1 or RhoG. Our studies underscore a central and distinct role for ILK in hair follicle development and in polarized cell movements, two key aspects of epithelial morphogenesis and function. 相似文献