全文获取类型
收费全文 | 404篇 |
免费 | 8篇 |
国内免费 | 1篇 |
专业分类
耳鼻咽喉 | 8篇 |
儿科学 | 1篇 |
妇产科学 | 6篇 |
基础医学 | 81篇 |
口腔科学 | 11篇 |
临床医学 | 64篇 |
内科学 | 126篇 |
皮肤病学 | 2篇 |
神经病学 | 18篇 |
特种医学 | 8篇 |
外科学 | 49篇 |
预防医学 | 7篇 |
药学 | 11篇 |
肿瘤学 | 21篇 |
出版年
2023年 | 2篇 |
2022年 | 9篇 |
2021年 | 17篇 |
2020年 | 4篇 |
2019年 | 5篇 |
2018年 | 3篇 |
2017年 | 2篇 |
2016年 | 2篇 |
2015年 | 9篇 |
2014年 | 6篇 |
2013年 | 6篇 |
2012年 | 10篇 |
2011年 | 7篇 |
2010年 | 5篇 |
2009年 | 5篇 |
2008年 | 10篇 |
2007年 | 13篇 |
2006年 | 11篇 |
2005年 | 11篇 |
2004年 | 14篇 |
2003年 | 13篇 |
2002年 | 20篇 |
2001年 | 9篇 |
2000年 | 13篇 |
1999年 | 4篇 |
1998年 | 3篇 |
1994年 | 2篇 |
1993年 | 3篇 |
1992年 | 12篇 |
1991年 | 19篇 |
1990年 | 14篇 |
1989年 | 16篇 |
1988年 | 12篇 |
1987年 | 15篇 |
1986年 | 14篇 |
1985年 | 12篇 |
1984年 | 5篇 |
1983年 | 11篇 |
1982年 | 3篇 |
1980年 | 2篇 |
1979年 | 3篇 |
1978年 | 6篇 |
1976年 | 4篇 |
1975年 | 3篇 |
1974年 | 6篇 |
1973年 | 9篇 |
1972年 | 13篇 |
1971年 | 4篇 |
1970年 | 3篇 |
1969年 | 3篇 |
排序方式: 共有413条查询结果,搜索用时 15 毫秒
411.
Mariia Chernykh Dmytro Zavalny Viktoriya Sokolova Stanislav Ponomarenko Svitlana Prylutska Yuliia Kuziv Vasyl Chumachenko Andrii Marynin Nataliya Kutsevol Matthias Epple Uwe Ritter Jacek Piosik Yuriy Prylutskyy 《Materials》2021,14(13)
A new water-soluble thermosensitive star-like copolymer, dextran-graft-poly-N-iso-propilacrylamide (D-g-PNIPAM), was created and characterized by various techniques (size-exclusion chromatography, differential scanning calorimetry, Fourier-transform infrared (FTIR) spectroscopy, and dynamic light scattering (DLS) spectroscopy). The viability of cancer cell lines (human transformed cervix epithelial cells, HeLa) as a model for cancer cells was studied using MTT and Live/Dead assays after incubation with a D-g-PNIPAM copolymer as a carrier for the drug doxorubicin (Dox) as well as a D-g-PNIPAM + Dox mixture as a function of the concentration. FTIR spectroscopy clearly indicated the complex formation of Dox with the D-g-PNIPAM copolymer. The size distribution of particles in Hank’s solution was determined by the DLS technique at different temperatures. The in vitro uptake of the studied D-g-PNIPAM + Dox nanoparticles into cancer cells was demonstrated by confocal laser scanning microscopy. It was found that D-g-PNIPAM + Dox nanoparticles in contrast to Dox alone showed higher toxicity toward cancer cells. All of the aforementioned facts indicate a possibility of further preclinical studies of the water-soluble D-g-PNIPAM particles’ behavior in animal tumor models in vivo as promising carriers of anticancer agents. 相似文献
412.
Volodymyr Kulyk Zoia Duriagina Andrii Kostryzhev Bogdan Vasyliv Valentyna Vavrukh Olexandra Marenych 《Materials》2022,15(15)
Yttria-stabilized zirconia (YSZ) is well-known as a material with perfect mechanical, thermal, and electrical properties. It is used for manufacturing various high-temperature components for aerospace and energy generation, as well as wear- and corrosion-resistant devices in medicine. This work investigated the effect of a Y2O3 addition to ZrO2 on the microstructure and mechanical properties of YSZ ceramics produced by one sintering schedule. ZrO2 ceramics doped with 3, 4, 5, 6, 7, and 8 mol% Y2O3 (designated 3YSZ through to 8YSZ) were prepared by using conventional sintering at 1550 °C for 2 h in argon. The effect of yttria content was analyzed with respect to grain size, morphology of the microstructural features, phase composition, parameters of fracture surface, and flexural strength. The 7YSZ ceramics sintered at 1550 °C for 2 h showed the highest level of flexural strength due to the formation of the fine-grained microstructure containing mainly the monoclinic and tetragonal zirconia phases. The fracture micromechanism in the studied YSZ ceramics is discussed. 相似文献
413.