全文获取类型
收费全文 | 655篇 |
免费 | 38篇 |
专业分类
电工技术 | 8篇 |
化学工业 | 148篇 |
金属工艺 | 13篇 |
机械仪表 | 27篇 |
建筑科学 | 12篇 |
矿业工程 | 1篇 |
能源动力 | 16篇 |
轻工业 | 32篇 |
水利工程 | 15篇 |
石油天然气 | 1篇 |
无线电 | 81篇 |
一般工业技术 | 139篇 |
冶金工业 | 60篇 |
原子能技术 | 3篇 |
自动化技术 | 137篇 |
出版年
2024年 | 3篇 |
2023年 | 14篇 |
2022年 | 17篇 |
2021年 | 37篇 |
2020年 | 35篇 |
2019年 | 22篇 |
2018年 | 37篇 |
2017年 | 43篇 |
2016年 | 24篇 |
2015年 | 24篇 |
2014年 | 29篇 |
2013年 | 39篇 |
2012年 | 35篇 |
2011年 | 37篇 |
2010年 | 36篇 |
2009年 | 50篇 |
2008年 | 45篇 |
2007年 | 25篇 |
2006年 | 20篇 |
2005年 | 14篇 |
2004年 | 10篇 |
2003年 | 7篇 |
2002年 | 5篇 |
2001年 | 4篇 |
2000年 | 8篇 |
1999年 | 4篇 |
1998年 | 10篇 |
1997年 | 7篇 |
1996年 | 12篇 |
1995年 | 10篇 |
1994年 | 10篇 |
1993年 | 9篇 |
1992年 | 4篇 |
1991年 | 1篇 |
1989年 | 1篇 |
1988年 | 2篇 |
1986年 | 2篇 |
1979年 | 1篇 |
排序方式: 共有693条查询结果,搜索用时 312 毫秒
691.
Jaypalsing Ingle Bibhas Das Keshav Chaudhary Prof. Dr. Anirban Mondal Prof. Dr. Sudipta Basu 《Chembiochem : a European journal of chemical biology》2023,24(19):e202300379
Organelles are the working hubs of the cells. Hence, visualizing these organelles inside the cells is highly important for understanding their roles in pathological states and development of therapeutic strategies. Herein, we report the development of a novel highly substituted oxazoles with modular scaffolds (AIE-ER, AIE-Mito, and AIE-Lyso), which can home into endoplasmic reticulum (ER), mitochondria, and lysosomes inside the cells. These oxazoles showed remarkable aggregation-induced emission (AIE) property in water and in the solid state due to dual intramolecular H-bonding, which was confirmed by pH- and temperature-dependent fluorescence studies followed by molecular dynamics (MD) simulations and density functional theory (DFT) calculations. Confocal laser scanning microscopy studies revealed that AIE-ER, AIE-Mito, and AIE-Lyso efficiently homed into ER, mitochondria and lysosomes, respectively, in the HeLa cervical cancer cells and non-cancerous human retinal pigment epithelial RPE-1 cells within 3 h without showing any toxicity to the cells with high sub-cellular photostability. To the best of our knowledge, this is the first report of highly substituted oxazole-based small molecule AIEgens for organelle imaging. We anticipate these novel AIEgens have promise to image sub-cellular organelles in different diseased states as well as understanding the inter-organelle interactions towards the development of novel therapeutics. 相似文献
692.
Modak Pranabananda Tyagi Kushagra Chakrabarti Debalay Mitra Rahul Patra Sudipta 《Metallurgical and Materials Transactions A》2023,54(3):1024-1041
Metallurgical and Materials Transactions A - The study focuses on the processing of thick plate (≥ 12 mm) and strip (3 to 4 mm) where hot-rolling reduction is... 相似文献
693.
Thi Xuyen Nguyen Jagabandhu Patra Chia-Chien Tsai Wen-Ye Xuan Hsin-Yi Tiffany Chen Matthew S. Dyer Oliver Clemens Ju Li Subhasish Basu Majumder Jeng-Kuei Chang Jyh-Ming Ting 《Advanced functional materials》2023,33(30):2300509
High entropy oxide (HEO) has emerged as a new class of anode material for Li-ion batteries (LIBs) by offering infinite possibilities to tailor the charge–discharge properties. While the advantages of single-phase HEO anodes are realized, the effects of a secondary phase are overlooked. In this study, two kinds of Co-free HEOs are prepared, containing Cr, Mn, Fe, Ni, and Zn, for use as LIB anodes. One is a plain cubic-structure high entropy spinel oxide HESO (C) prepared using a solvothermal method. The other HESO (C+T) contains an extra secondary phase of tetragonal spinel oxide and is prepared using a hydrothermal method. It is demonstrated that the secondary tetragonal spinel phase introduces phase boundaries and defects/oxygen vacancies within HESO (C+T), which improve the redox kinetics and reversibility during electrode lithiation/delithiation. Density functional theory calculation is performed to assess the phase stability of cubic spinel, tetragonal spinel, and rock-salt structures, and validate the cycling stability of the electrodes upon charging–discharging. The secondary-phase-induced rate capability and cyclability enhancement of HEO electrodes are for the first time demonstrated. A HESO (C+T)||LiNi0.8Co0.1Mn0.1O2 full cell is assembled and evaluated, showing a promising gravimetric energy density of ≈610 Wh kg−1 based on electrode-active materials. 相似文献