农业保险保障水平影响农民增收的模拟分析

使用全国29个省的2010～2019年的面板数据，对我国农业保险保障水平影响农民增收的成效进行模拟分析。实证结果表明：提高我国农业保险的保障水平对农民经营纯收入的增加产生了积极的作用。从全国来看，农业保险保障水平提高1%，促进农业人均净收入增加0.0104%；农业保险保障水平对农村居民家庭收入影响具有不平衡性，对东、中部等我国保障水平高、财政自给能力强的地区的作用效果更显著。因此，中央财政应加大财政补贴农业保险的力度和范围，提高农业保险保障水平，对财政自给能力弱的地区给予更大的补贴比例。     

CSS样式在网页美化中的作用

介绍了利用CSS样式表提高网页维护的更新效率的方法。通过设置CSS样式来实现网页滤镜特效,从而改善网页的外观,达到美化网页的作用。最后,用实例说明了CSS样式在美化网页中的应用及其所达到的效果。     

大跨度空间张弦结构玻璃采光顶工程质量监督要点

结合某采光顶三向张弦钢结构工程,分析探讨了大跨空间张弦结构体系的质量监督要点,着重从行为、实体、资料三大方面进行详细的分解分析,指出了工程质量监督中的重点检查对象、检查深度及要求,为类似工程提供了质量监督经验。     

p‐Si/SnO2/Fe2O3 Core/Shell/Shell Nanowire Photocathodes for Neutral pH Water Splitting

Silicon is one of the promising materials for solar water splitting and hydrogen production; however, it suffers from two key factors, including the large external potential required to drive water splitting reactions at its surface and its instability in the electrolyte. In this study, a successful fabrication of novel p‐Si/n‐SnO₂/n‐Fe₂O₃ core/shell/shell nanowire (css‐NW) arrays, consisting of vertical Si NW cores coated with a thin SnO₂ layer and a dense Fe₂O₃ nanocrystals (NCs) shell, and their application for significantly enhanced solar water reduction in a neutral medium is reported. The p‐Si/n‐SnO₂/n‐Fe₂O₃ css‐NW structure is characterized in detail using scanning, transmission, and scanning transmission electron microscopes. The p‐Si/n‐SnO₂/n‐Fe₂O₃ css‐NWs show considerably improved photocathodic performances, including higher photocurrent and lower photocathodic turn‐on potential, compared to the bare p‐Si NWs or p‐Si/n‐SnO₂ core/shell NWs (cs‐NWs), due to increased optical absorption, enhanced charge separation, and improved gas evolution. As a result, photoactivity at 0 V versus reversible hydrogen electrode and a low onset potential in the neutral solution are achieved. Moreover, p‐Si/n‐SnO₂/n‐Fe₂O₃ css‐NWs exhibit long‐term photoelectrochemical stability due to the Fe₂O₃ NCs shell well protection. These results reveal promising css‐NW photoelectrodes from cost‐effective materials by facile fabrication with simultaneously improved photocathodic performance and stability.