Synergistic enhancement effect of SiC whisker and nano-particle on mechanical properties of Co4Sb11.5Te0.5 skutterudite

2020 ◽  
Vol 185 ◽  
pp. 66-70
Author(s):  
Feng Guo ◽  
Pengfei Wen ◽  
Bo Duan ◽  
Yao Li ◽  
Xilong Zhou ◽  
...  
2019 ◽  
Vol 2019 ◽  
pp. 1-10 ◽  
Author(s):  
Yuxiang Huang ◽  
Yue Qi ◽  
Yahui Zhang ◽  
Wenji Yu

At present, China is the world's largest producer of bamboo resource possessor and bamboo processing. The main processing method of bamboo recombination technology is rolling and compaction, by which a reconstituted material with bamboo fibrotic veneer as matrix and phenolic resin as reinforcement is prepared. It has excellent physical and mechanical properties and can replace high-quality wood to manufacture various engineering structural materials and building decoration materials. This paper reviewed the research process and progress of bamboo recombination technology, the existing technical problems and prospects, in order to provide references for future research on bamboo recombination theory and production practice. In recent years, as a new material with controllable properties, designable structures, and adjustable dimensions, bamboo reconstituted materials have been comprehensively studied from the aspects of pressing process parameters, physicochemical mechanical properties evaluation system, and microstructure characterization, but the research is not comprehensive and has not in-depth view. In the future, the relationship between microstructure and performance should be emphatically studied to clarify the law of mechanical performance change and ultimate mechanical performance under synergistic enhancement effect, as well as the performance change and interface formation of the resin during the entire molding process. Meanwhile, the reliability and relevance of applied research should be further expanded, and the integration of natural and artificial aging environment, process and performance, and macro- and microscales should be strengthened.


2021 ◽  
Vol 11 (7) ◽  
pp. 1277-1283
Author(s):  
Yujie Xiao ◽  
Guilin Huang ◽  
Yibo Xiang

The 5-fluorouracil (5-FU) was a classical chemotherapy drug. The administrational carrier of nano-particle provides enhancement effect prior to target and reduce side effect. But the specific function of nano-particle on the peritoneal metastasis of breast cancer was poorly understood. Our study was designed to discover the biological function of anti-tumor nano-particle with new type 5-FU on breast cancer. The nano-particle of 5-fluorouracil (5-FU-NPs) was prepared by multiple emulsion method. The distribution of particle size was analyzed by electron microscope. The proliferation and apoptosis of cell in breast cancer was interfered by 5-FU solution (control group) or 5-FU-NPs. Cell cycle was assessed by flow cytometry and proliferation was detected by MTT and cell clone technology. The rat was injected with 5-FU solution (control group) or 5-FU-NPs intraperitoneally followed by analysis of tumor volume and size. The average tumor diameter was 200±10.84 nm. The encapsulation rate and loading rate was 81.6±5.7% and 7.29±0.14% respectively. The apoptosis of MCF-7 cell treated by 5-FU-NPs was increased significantly with abundant rounded and floating apoptotic cellular morphology as well as reduced quantity of surviving cells. The number of bacterial colony induced by 5-FU-NPs, which could interdict cell cycle. The 5-FU-NPs could restrain tumor cell growth in peritoneal metastasis of breast cancer. The new-type nano-particle of 5-FU loaded with PEG-PLGA could retard breast cancer cell proliferation and peritoneal metastasis of breast cancer in rats.


2011 ◽  
Vol 243-249 ◽  
pp. 5941-5945
Author(s):  
Ya Fang Zhang ◽  
Lin Li ◽  
Hao Liu

With numerical modeling in meso level, impaction of incorporating polypropylene fibers with two different geometry dimensions on flexural strength and toughness of hybrid fiber concrete has been studied in this paper. Mechanism of such hybrid fiber reinforcement has also been analyzed. The results show that hybrid of fibers with different geometric dimensions would bring about synergy, thus fiber enhancement effect could be demonstrated. Furthermore, the closer the incorporation ratio of these two kinds fibers are to each other, the more evident the enhancement will be produced. The most optimized hybrid ratio is in between 2:1 and 1:1.


ACS Sensors ◽  
2019 ◽  
Vol 4 (11) ◽  
pp. 2958-2965 ◽  
Author(s):  
Yan Zhai ◽  
Yunshan Zheng ◽  
Zhiyuan Ma ◽  
Yanzheng Cai ◽  
Feng Wang ◽  
...  

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