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91.
Huan-Yan Xu Yuan Wang Tian-Nuo Shi Hang Zhao Qu Tan Bo-Chao Zhao Xiu-Lan He Shu-Yan Qi 《材料科学前沿(英文版)》2018,12(1):21-33
Multi-walled carbon nanotubes (MWCNTs) can act not only as a support for Fe3O4 nanoparticles (NPs) but also as a coworker with synergistic effect, accordingly improving the heterogeneous Fenton-like efficiency of Fe3O4 NPs. In this study, Fe3O4 NPs were in situ anchored onto MWCNTs by a moderate co-precipitation method and the as-prepared Fe3O4/MWCNTs nanocomposites were employed as the highly efficient Fenton-like catalysts. The analyses of XRD, FTIR, Raman, FESEM, TEM and HRTEM results indicated the formation of Fe3O4 crystals in Fe3O4/MWCNTs nanocomposites prepared at different conditions and the interaction between Fe3O4 NPs and MWCNTs. Over a wide pH range, the surface of modified MWCNTs possessed negative charges. Based on these results, the possible combination mechanism between Fe3O4 NPs and MWCNTs was discussed and proposed. Moreover, the effects of preparation and catalytic conditions on the Fenton-like catalytic efficiency were investigated in order to gain further insight into the heterogeneous Fenton-like reaction catalyzed by Fe3O4/MWCNTs nanocomposites. 相似文献
92.
Li Dongyu Ni Xiang Zhang Xiaoyan Liu Liwei Qu Junle Ding Dan Qian Jun 《Nano Research》2018,11(11):6023-6033
Nano Research - Aggregation-induced emission luminogens (AIEgens) are fluorescent agents that are ideal for bioimaging and have been widely used for organelle targeting, cellular mapping, and... 相似文献
93.
Li Yixiang An Huanxiao Wang Xiaobing Wang Pan Qu Fei Jiao Yan Zhang Kun Liu Quanhong 《Nano Research》2018,11(2):1038-1056
Nano Research - Applying ultrasound (US) to drug delivery and disease therapy is important work. Sonodynamic therapy (SDT)—a comprehensive therapy using US and a sonosensitizer—exhibits... 相似文献
94.
95.
Wen Guang Qu Wonseok Oh Alain Pinsonneault 《The Journal of Strategic Information Systems》2010,19(2):96-108
Although research on the business impact of IT outsourcing abounds, little is known about the relative strategic value of IT outsourcing and IT insourcing. Drawing upon the knowledge-based view of the firm, this study postulates that, compared with IT outsourcing, IT insourcing is more effective for developing IT-enabled business processes (IEBP), which subsequently lead to superior firm performance. Our analysis of the data from InformationWeek and Compustat shows that IT insourcing is positively associated with IEBP, while the relationship between IT outsourcing and IEBP is not statistically significant. We also find that IEBP have a significant influence on firm performance. Finally, the effect of IT sourcing mechanisms on IEBP and the effect of IEBP on firm performance are both moderated by the type of innovation related to IEBP. The results suggest that in order to improve their performance firms should consider IT an integral part of their strategic core and should be proactively involved in the internal development of IT resources. We conclude with managerial implications and directions for future research. 相似文献
96.
FacetAtlas: multifaceted visualization for rich text corpora 总被引:1,自引:0,他引:1
Cao N Sun J Lin YR Gotz D Liu S Qu H 《IEEE transactions on visualization and computer graphics》2010,16(6):1172-1181
Documents in rich text corpora usually contain multiple facets of information. For example, an article about a specific disease often consists of different facets such as symptom, treatment, cause, diagnosis, prognosis, and prevention. Thus, documents may have different relations based on different facets. Powerful search tools have been developed to help users locate lists of individual documents that are most related to specific keywords. However, there is a lack of effective analysis tools that reveal the multifaceted relations of documents within or cross the document clusters. In this paper, we present FacetAtlas, a multifaceted visualization technique for visually analyzing rich text corpora. FacetAtlas combines search technology with advanced visual analytical tools to convey both global and local patterns simultaneously. We describe several unique aspects of FacetAtlas, including (1) node cliques and multifaceted edges, (2) an optimized density map, and (3) automated opacity pattern enhancement for highlighting visual patterns, (4) interactive context switch between facets. In addition, we demonstrate the power of FacetAtlas through a case study that targets patient education in the health care domain. Our evaluation shows the benefits of this work, especially in support of complex multifaceted data analysis. 相似文献
97.
文章分析了主题图的相关理论和传统文献组织方法优劣,论证了主题图在文献资源组织中的可行性,提出了基于主题图的文献资源组织模型及构建方法,引申了基于该模型的文献检索、主题导学、个性化资源推荐等应用研究。 相似文献
98.
基于ZigBee和GPRS的风电场远程监控系统研究 总被引:1,自引:0,他引:1
文章设计了一种基于ZigBee无线传感器网络和GPRS技术的风电场远程监控系统,可以对风力发电机组的发电机参数、状态参数、机械参数、环境参数等信息进行现场采集和监控,编制了适合应用于各类风电场的基于ZigBee无线传感器网络和GPRS技术的监控软件,能够很好地完成对风电场监控与管理的功能。 相似文献
99.
Accurate protein secondary structure prediction plays an important role in direct tertiary structure modeling, and can also significantly improve sequence analysis and sequence-structure threading for structure and function determination. Hence improving the accuracy of secondary structure prediction is essential for future developments throughout the field of protein research.In this article, we propose a mixed-modal support vector machine (SVM) method for predicting protein secondary structure. Using the evolutionary information contained in the physicochemical properties of each amino acid and a position-specific scoring matrix generated by a PSI-BLAST multiple sequence alignment as input for a mixed-modal SVM, secondary structure can be predicted at significantly increased accuracy. Using a Knowledge Discovery Theory based on the Inner Cognitive Mechanism (KDTICM) method, we have proposed a compound pyramid model, which is composed of three layers of intelligent interface that integrate a mixed-modal SVM (MMS) module, a modified Knowledge Discovery in Databases (KDD1) process, a mixed-modal back propagation neural network (MMBP) module and so on.Testing against data sets of non-redundant protein sequences returned values for the Q3 accuracy measure that ranged from 84.0% to 85.6%,while values for the SOV99 segment overlap measure ranged from 79.8% to 80.6%. When compared using a blind test dataset from the CASP8 meeting against currently available secondary structure prediction methods, our new approach shows superior accuracy.Availability: http://www.kdd.ustb.edu.cn/protein_Web/. 相似文献
100.
当前激光干涉仪的信号处理系统主要采用单片机技术和4细分辨向电路,存在硬件电路复杂、易受外界干扰、难以实现复杂算法等问题.因此,提出了将DSP技术引入到激光干涉仪的信号处理系统中,设计了一种用于处理干涉条纹信号的专用电路.具体研究了改进的8细分算法,并给出了系统的主要程序.实验结果表明,基于DSP的激光干涉仪具有电路简单、功能强大等优点,进一步提高了激光干涉仪的测量精度和分辨力. 相似文献