全文获取类型
收费全文 | 1506篇 |
免费 | 92篇 |
国内免费 | 61篇 |
出版年
2023年 | 17篇 |
2022年 | 28篇 |
2021年 | 37篇 |
2020年 | 36篇 |
2019年 | 51篇 |
2018年 | 51篇 |
2017年 | 35篇 |
2016年 | 31篇 |
2015年 | 45篇 |
2014年 | 79篇 |
2013年 | 105篇 |
2012年 | 69篇 |
2011年 | 70篇 |
2010年 | 68篇 |
2009年 | 78篇 |
2008年 | 67篇 |
2007年 | 86篇 |
2006年 | 69篇 |
2005年 | 39篇 |
2004年 | 63篇 |
2003年 | 50篇 |
2002年 | 46篇 |
2001年 | 33篇 |
2000年 | 30篇 |
1999年 | 29篇 |
1998年 | 23篇 |
1997年 | 18篇 |
1996年 | 13篇 |
1995年 | 24篇 |
1994年 | 14篇 |
1993年 | 15篇 |
1992年 | 12篇 |
1991年 | 12篇 |
1990年 | 10篇 |
1989年 | 8篇 |
1988年 | 9篇 |
1987年 | 7篇 |
1986年 | 6篇 |
1985年 | 17篇 |
1984年 | 29篇 |
1983年 | 15篇 |
1982年 | 16篇 |
1981年 | 10篇 |
1980年 | 23篇 |
1979年 | 15篇 |
1978年 | 12篇 |
1977年 | 11篇 |
1976年 | 8篇 |
1975年 | 5篇 |
1973年 | 9篇 |
排序方式: 共有1659条查询结果,搜索用时 15 毫秒
31.
Xinliang Li Mian Li Qi Yang Guojin Liang Zhaodong Huang Longtao Ma Donghong Wang Funian Mo Binbin Dong Qing Huang Chunyi Zhi 《Liver Transplantation》2020,10(36)
The traditional method to fabricate a MXene based energy storage device starts from etching MAX phase particles with dangerous acid/alkali etchants to MXenes, followed by device assembly. This is a multistep protocol and is not environmentally friendly. Herein, an all‐in‐one protocol is proposed to integrate synthesis and battery fabrication of MXene. By choosing a special F‐rich electrolyte, MAX V2AlC is directly exfoliated inside a battery and the obtained V2CTX MXene is in situ used to achieve an excellent battery performance. This is a one‐step process with all reactions inside the cell, avoiding any contamination to external environments. Through the lifetime, the device experiences three stages of exfoliation, electrode oxidation, and redox of V2O5. While the electrode is changing, the device can always be used as a battery and the performance is continuously enhanced. The resulting aqueous zinc ion battery achieves outstanding cycling stability (4000 cycles) and rate performance (97.5 mAh g?1 at 64 A g?1), distinct from all reported aqueous MXene‐based counterparts with pseudo‐capacitive properties, and outperforming most vanadium‐based zinc ion batteries with high capacity. This work sheds light on the green synthesis of MXenes, provides an all‐in‐one protocol for MXene devices, and extends MXenes’ application in the aqueous energy storage field. 相似文献
32.
33.
《Bioorganic & medicinal chemistry letters》2020,30(18):127417
Solid preclinical evidence links vasopressin to social behavior in animals, so, extensive work has been initiated to find new vasopressin V1a receptor antagonists which can improve deteriorated social behavior in humans and can treat the core symptoms of autistic behavior, as well. Our aim was to identify new chemical entities with antagonizing effects on vasopressin V1a receptors. Continuing our previous work, we found an in vitro and in vivo orally active V1a selective antagonist molecule (40) among [1,2,4]triazolo[4,3-a][1]benzazepines. 相似文献
34.
35.
36.
Gabriella Galatà Andrés C. García-Montero Thomas Kristensen Ahmed A.Z. Dawoud Javier I. Muñoz-González Manja Meggendorfer Paola Guglielmelli Yvette Hoade Ivan Alvarez-Twose Christian Gieger Konstantin Strauch Luigi Ferrucci Toshiko Tanaka Stefania Bandinelli Theresia M. Schnurr Torsten Haferlach Sigurd Broesby-Olsen Hanne Vestergaard William J. Tapper 《American journal of human genetics》2021,108(2):284-294
37.
Raveendra Melavanki Kalpana Sharma Basappa Chanabasapa Yallur Raviraj Kusanur Kishor Kumar Sadasivuni Diksha Singh Smita Mane Kariyappa Katagi Shridhar V. Pattar 《Luminescence》2021,36(1):163-168
Continuous monitoring of glucose and sugar sensing plays a vital role in diabetes control. The drawbacks of the present enzyme‐based sugar sensors have encouraged the investigation into alternate approaches to design new sensors. The popularity of fluorescence sensors is due to their ability to bind reversibly to compounds containing diol. In this study we investigated the binding ability of phenyl boronic acid P1 for monosaccharides and disaccharides (sugars) in aqueous medium at physiological pH 7.4 using steady‐state fluorescence and absorbance. P1 fluorescence was quenched due to formation of esters with sugars. Absorbance and fluorescence measurements led to results that indicated that the sugars studied could be ordered in terms of their affinity to P1, as stated: sucrose > lactose > galactose > xylose > ribose > arabinose. In each case, the slope of modified Stern–Volmer plots was nearly 1, indicating the presence of only a single binding site in boronic acids for sugars. Docking studies were carried out using Schrodinger Maestro v.11.2 software. The binding affinity of phenyl boronic acid P1 with periplasmic protein (PDB ID 2IPM and 2IPL) was estimated using GlideScore. 相似文献
38.
39.
40.