全文获取类型
收费全文 | 100篇 |
免费 | 18篇 |
国内免费 | 5篇 |
专业分类
电工技术 | 2篇 |
综合类 | 5篇 |
化学工业 | 26篇 |
金属工艺 | 3篇 |
机械仪表 | 5篇 |
建筑科学 | 1篇 |
矿业工程 | 2篇 |
轻工业 | 10篇 |
无线电 | 15篇 |
一般工业技术 | 40篇 |
冶金工业 | 1篇 |
原子能技术 | 1篇 |
自动化技术 | 12篇 |
出版年
2024年 | 3篇 |
2023年 | 8篇 |
2022年 | 8篇 |
2021年 | 9篇 |
2020年 | 11篇 |
2019年 | 7篇 |
2018年 | 3篇 |
2017年 | 6篇 |
2016年 | 2篇 |
2015年 | 4篇 |
2014年 | 9篇 |
2013年 | 3篇 |
2012年 | 1篇 |
2011年 | 4篇 |
2010年 | 5篇 |
2009年 | 4篇 |
2008年 | 7篇 |
2007年 | 12篇 |
2006年 | 5篇 |
2005年 | 3篇 |
2004年 | 1篇 |
2003年 | 2篇 |
2002年 | 2篇 |
1999年 | 2篇 |
1997年 | 1篇 |
1994年 | 1篇 |
排序方式: 共有123条查询结果,搜索用时 8 毫秒
101.
Since the last few decades, the development of smart hydrogels, which can respond to stimuli and adapt their responses based on external cues from their environments, has become a thriving research frontier in the biomedical engineering field. Nowadays, drug delivery systems have received great attention and smart hydrogels can be potentially used in these systems due to their high stability, physicochemical properties, and biocompatibility. Smart hydrogels can change their hydrophilicity, swelling ability, physical properties, and molecules permeability, influenced by external stimuli such as pH, temperature, electrical and magnetic fields, light, and the biomolecules’ concentration, thus resulting in the controlled release of the loaded drugs. Herein, this review encompasses the latest investigations in the field of stimuli-responsive drug-loaded hydrogels and our contribution to this matter. 相似文献
102.
Xiaolong WANG 《等离子体科学和技术》2020,22(11):115504
The objective of this work is to contribute an understanding of the effects of electrons in the
plasmas on the mass transfer of plasma species in aqueous solution by means of the numerical
simulation based on a one-dimensional diffusion-reaction model. The plasma species are divided
into two groups, i.e. electrons and the other species, and the mass transfer in the three scenarios
has been simulated, including the systematic calculations of the depth distributions of five major
reactive species, OH, O3, HO2 , O2-, and H2O2 . In the three scenarios, the particles considered to
enter into aqueous solution are all the plasma species (the scenario I, where the mass transfer of
plasma species is a result due to the synergy of the electrons and the other plasma species), the
other species (the scenario II), and only electrons in plasma species (the scenario III),
respectively. The detailed analyses on the difference between the depth distributions of each
reactive species in these three scenarios show the following conclusions. The electrons play an
important role in the mass transfer of plasma species in aqueous solution and the synergy of the
electrons and the other plasma species (the electron-species synergy) presents its different effects
on the mass transfer. The vast majority of H2O2 are generated from a series of the electron-
related reactions in aqueous solution, which is hardly affected by the electron-species synergy.
Compared to the results when only the electrons enter into the liquid region, the electron-species
synergy evidently weakens the generation of O2-, O3 , and OH, but promotes to produce HO2 . 相似文献
103.
Chenglu Gu Zhiqiang Wang Yawen Pan Shuang Zhu Zhanjun Gu 《Advanced materials (Deerfield Beach, Fla.)》2023,35(1):2204397
Tungsten-based nanomaterials (TNMs) with diverse nanostructures and unique physicochemical properties have been widely applied in the biomedical field. Although various reviews have described the application of TNMs in specific biomedical fields, there are still no comprehensive studies that summarize and analyze research trends of the field as a whole. To identify and further promote the development of biomedical TNMs, a bibliometric analysis method is used to analyze all relevant literature on this topic. First, general bibliometric distributions of the dataset by year, country, institute, referenced source, and research hotspots are recognized. Next, a comprehensive review of the subjectively recognized research hotspots in various biomedical fields, including biological sensing, anticancer treatments, antibacterials, and toxicity evaluation, is provided. Finally, the prospects and challenges of TNMs are discussed to provide a new perspective for further promoting their development in biomedical research. 相似文献
104.
105.
106.
107.
研究和发展了一种两维荧光光谱测量及成像技术,讨论获得两维空间离散点的最佳光谱分辨率的方法.该技术以棱镜色散原理为基础,利用微透镜阵列实现对样品的离散化照明,充分发挥光学系统固有的并行处理能力,实现了在一个面阵探测器上同时记录两维空间的荧光光谱图像.与逐点扫描方法相比,该技术的扫描效率随激发点数线性提高,具有快速测量、高空间和高光谱分辨的特点,可用于生物医学领域. 相似文献
108.
109.
110.
羟基磷灰石是人体骨骼和牙齿的主要无机成分,具有良好的生物相容性和生物活性,且能诱导骨组织的生长,促进组织缺损的修复,是性能优异的骨修复材料。近年来,纳米羟基磷灰石由于其独特的性能,在生物医学领域展现出新的应用功能。但是,为了发挥纳米羟基磷灰石独特的功能特性,常常需要对其进行表面修饰,以满足生物医学应用的条件和要求。从生物医学角度,针对羟基磷灰石纳米粒子在生物显影、DNA转染、药物递送、与高分子复合、促进成骨和抑菌等方面的应用,对羟基磷灰石纳米粒子的表面修饰研究进行论述,探讨相关表面修饰思路和技术及修饰应用效果。通过表面修饰,不仅可以提高羟基磷灰石纳米粒子的分散性和悬浮稳定性,提升药物装载能力和促进成骨能力,还可以赋予其生物显影能力、主动靶向功能和抑菌能力。总之,表面修饰是一种促进羟基磷灰石纳米粒子生物医学应用的有效手段。 相似文献