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碳化硅基材料在电磁波吸收领域的研究进展 被引量:5
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作者 夏元佳 陈国兵 +3 位作者 赵爽 费志方 张震 杨自春 《化学进展》 SCIE CAS CSCD 北大核心 2024年第1期145-158,共14页
研究高性能电磁波吸收材料对提升武器装备隐身性能和解决电磁污染问题具有重大意义。碳化硅(SiC)材料具有良好的耐高温、抗腐蚀和化学稳定性,在电磁波吸收领域展现出良好的应用前景,然而本征SiC材料的吸波性能较弱,如何提升其吸波性能... 研究高性能电磁波吸收材料对提升武器装备隐身性能和解决电磁污染问题具有重大意义。碳化硅(SiC)材料具有良好的耐高温、抗腐蚀和化学稳定性,在电磁波吸收领域展现出良好的应用前景,然而本征SiC材料的吸波性能较弱,如何提升其吸波性能是一个重要的研究课题。本文从SiC材料吸波机理出发,首先分析总结了不同形貌SiC基吸波材料(核壳结构、气凝胶结构、纤维结构、中空结构、MOFs结构等)的研究现状,并详细介绍了SiC与碳化硅纤维、碳材料、磁性物质等复合材料在吸波领域的研究进展,同时综述了特殊类型SiC基吸波材料(SiC基高温吸波材料、SiC基吸波超材料、SiC基多功能吸波材料)的发展现状,最后展望了其未来的发展方向。 展开更多
关键词 碳化硅 吸波 复合材料 形貌调控 超材料
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Rapid Measurement and Control of Nitrogen-Vacancy Center-Axial Orientation in Diamond Particles 被引量:1
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作者 guobin chen Yang Hui +2 位作者 Junci Sun Wenhao He Guanxiang Du 《Chinese Physics Letters》 SCIE CAS CSCD 2020年第11期44-47,共4页
Determination and control of nitrogen-vacancy(NV)centers play an important role in sensing the vector field by using their quantum information.To measure orientation of NV centers in a diamond particle attached to a t... Determination and control of nitrogen-vacancy(NV)centers play an important role in sensing the vector field by using their quantum information.To measure orientation of NV centers in a diamond particle attached to a tapered fiber rapidly,we propose a new method to establish the direction cosine matrix between the lab frame and the NV body frame.In this method,only four groups of the ODMR spectrum peaks shift data need to be collected,and the magnetic field along±Z and±Y in the lab frame is applied in the meantime.We can also control any NV axis to rotate to the X,Y,Z axes in the lab frame according to the elements of this matrix.The demonstration of the DC and microwave magnetic field vector sensing is presented.Finally,the proposed method can help us to perform vector magnetic field sensing more conveniently and rapidly. 展开更多
关键词 CENTERS DIAMOND ATTACHED
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Comparative transcriptome sequencing and weighted coexpression network analysis reveal growth-related hub genes and key pathways in the Chinese soft-shelled turtle(Pelodiscus sinensis)
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作者 guobin chen Tong Zhou +2 位作者 Jizeng Cao Guiwei Zou Hongwei Liang 《Water Biology and Security》 2024年第4期65-76,共12页
The Chinese soft-shelled turtle(Pelodiscus sinensis)exhibits sexual dimorphism.Compared with females,males are considered to have higher economic value due to their accelerated growth,greater body mass,and longer skir... The Chinese soft-shelled turtle(Pelodiscus sinensis)exhibits sexual dimorphism.Compared with females,males are considered to have higher economic value due to their accelerated growth,greater body mass,and longer skirt width.Studies focused on these sex disparities have largely neglected potential sex differences in growth.Here,we performed RNA sequencing of muscle tissue components from 1-year-old specimens to reveal gene expression patterns in P.sinensis.In our male and female cohorts,our analysis revealed,respectively,388 and 526 upregulated differentially expressed genes(DEGs)and 1129 and 635 downregulated DEGs.Through weighted coexpression network analysis(WGCNA)and integration with phenotype data,we established two main gene modules:a light yellow module encompassing 191 genes(e.g.,ACACB,CTH,HADHA,and CTNNB)that demonstrated a positive correlation with population traits,and a black module comprising 298 genes(e.g.,CAV3,PIK3CD,SMAD3,and VEGFA)that demonstrated a negative correlation with population traits.We also performed a DEG evaluation and gene set enrichment analysis across individuals of different sizes and noted that pathways such as protein digestion and assimilation(ko04974),were substantially augmented in larger specimens.In these pathways,the collagen(COL)and solute carrier(SLC)gene families were noted to be crucial for sustaining body structure and facilitating nutrient and metabolite transportation.In conclusion,we elucidated the essential modules,pivotal genes,and pathways involved in gene expression differences among various P.sinensis size groupings.Our results provide novel insights for future studies on growth discrepancies in P.sinensis. 展开更多
关键词 Growth Sexual dimorphism Pelodiscus sinensis Comparative transcriptome sequencing
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