The weak dielectric properties and the lack of magnetic loss of manganese-based absorbers are obstructed as the new generation of electromagnetic wave absorption(EMA)materials applying in microelectronic devices.Herei...The weak dielectric properties and the lack of magnetic loss of manganese-based absorbers are obstructed as the new generation of electromagnetic wave absorption(EMA)materials applying in microelectronic devices.Herein,the sulfuration and subsequent compounding strategies have been employed to enhance the EMA performance of multi-shell nanosphere-shaped Mn_(2)O_(3)materials.With the narrow bandgap,the as-obtained MnS possesses reinforced electrical conductivity,which is conducive to conductivity loss.More importantly,the presence of potential difference between different phases will form space charge region at the heterogeneous interface,thus favoring interfacial polarization.Additionally,the improvement of magnetic loss is attributed to the presence of Co_(3)O_(4)nanoparticles.Consequently,the composites present enhanced EMA performance than original Mn_(2)O_(3).Specifically,the minimum reflection loss of as-prepared composites is−51.4 dB at the thickness of 1.8 mm and the broad effective absorption bandwidth reaches 6.2 GHz at 1.9 mm.The low matching thickness and high absorption efficiency in this work can provide a convincing reference when designing distinguished manganese-based absorbers.展开更多
Chromosomes in eukaryotic cell nuclei are highly compacted and finely organized into hierarchical threedimensional(3 D) configuration. In recent years, scientists have gained deeper understandings of 3 D genome struct...Chromosomes in eukaryotic cell nuclei are highly compacted and finely organized into hierarchical threedimensional(3 D) configuration. In recent years, scientists have gained deeper understandings of 3 D genome structures and revealed novel evidence linking 3 D genome organization to various important cell events on the molecular level. Most importantly, alteration of 3 D genome architecture has emerged as an intriguing higher order mechanism that connects disease-related genetic variants in multiple heterogenous and polygenic neuropsychological disorders, delivering novel insights into the etiology. In this review, we provide a brief overview of the hierarchical structures of 3 D genome and two proposed regulatory models,loop extrusion and phase separation. We then focus on recent Hi-C data in the central nervous system and discuss 3 D genome alterations during normal brain development and in mature neurons. Most importantly,we make a comprehensive review on current knowledge and discuss the role of 3 D genome in multiple neuropsychological disorders, including schizophrenia, repeat expansion disorders, 22 q11 deletion syndrome, and others.展开更多
基金supported by the Natural Science Foundation of Shandong Province(No.ZR2019YQ24)Taishan Scholars and Young Experts Program of Shandong Province(No.tsqn202103057)the Qingchuang Talents Induction Program of Shandong Higher Education Institution(Research and Innovation Team of Structural-Functional Polymer Composites).
文摘The weak dielectric properties and the lack of magnetic loss of manganese-based absorbers are obstructed as the new generation of electromagnetic wave absorption(EMA)materials applying in microelectronic devices.Herein,the sulfuration and subsequent compounding strategies have been employed to enhance the EMA performance of multi-shell nanosphere-shaped Mn_(2)O_(3)materials.With the narrow bandgap,the as-obtained MnS possesses reinforced electrical conductivity,which is conducive to conductivity loss.More importantly,the presence of potential difference between different phases will form space charge region at the heterogeneous interface,thus favoring interfacial polarization.Additionally,the improvement of magnetic loss is attributed to the presence of Co_(3)O_(4)nanoparticles.Consequently,the composites present enhanced EMA performance than original Mn_(2)O_(3).Specifically,the minimum reflection loss of as-prepared composites is−51.4 dB at the thickness of 1.8 mm and the broad effective absorption bandwidth reaches 6.2 GHz at 1.9 mm.The low matching thickness and high absorption efficiency in this work can provide a convincing reference when designing distinguished manganese-based absorbers.
基金supported by Science and Technology Commission of Shanghai Municipality(19ZR1405400)。
文摘Chromosomes in eukaryotic cell nuclei are highly compacted and finely organized into hierarchical threedimensional(3 D) configuration. In recent years, scientists have gained deeper understandings of 3 D genome structures and revealed novel evidence linking 3 D genome organization to various important cell events on the molecular level. Most importantly, alteration of 3 D genome architecture has emerged as an intriguing higher order mechanism that connects disease-related genetic variants in multiple heterogenous and polygenic neuropsychological disorders, delivering novel insights into the etiology. In this review, we provide a brief overview of the hierarchical structures of 3 D genome and two proposed regulatory models,loop extrusion and phase separation. We then focus on recent Hi-C data in the central nervous system and discuss 3 D genome alterations during normal brain development and in mature neurons. Most importantly,we make a comprehensive review on current knowledge and discuss the role of 3 D genome in multiple neuropsychological disorders, including schizophrenia, repeat expansion disorders, 22 q11 deletion syndrome, and others.
