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H_(2)O及其中间体在缺电子Mn^((3+δ)+)位的自发增强吸附及其促进光催化产H_(2)O_(2)性能
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作者 尹鑫宇 石海洋 +3 位作者 王玉 王雪飞 王苹 余火根 《物理化学学报》 SCIE CAS CSCD 北大核心 2024年第10期55-57,共3页
过渡金属羟基氧化物已被证明是水氧化反应的可靠助催化剂。然而,在水氧化过程中它们对H_(2)O及其中间产物的吸附能力不足,极大制约了水氧化速率的提高。在本研究中,H_(2)O及其中间体在MnOOH助剂的缺电子Mn^((3+δ)+)上的自发增强吸附可... 过渡金属羟基氧化物已被证明是水氧化反应的可靠助催化剂。然而,在水氧化过程中它们对H_(2)O及其中间产物的吸附能力不足,极大制约了水氧化速率的提高。在本研究中,H_(2)O及其中间体在MnOOH助剂的缺电子Mn^((3+δ)+)上的自发增强吸附可以极大地促进水的快速氧化,从而在纯水体系中实现高效的光催化H_(2)O_(2)生成。首先,无定形MnOOH通过定向光诱导氧化方法选择性地沉积在AuPd改性的单晶BiVO_(4)光催化剂的(110)面上,从而制备了AuPd/BiVO_(4)/MnOOH光催化剂。光催化实验表明,所制备的AuPd/BiVO_(4)/MnOOH(0.5%)光催化剂的H_(2)O_(2)产生速率达到214μmol·L^(-1),并表现出良好的稳定性和重现性。密度泛函理论计算和X射线光电子能谱表征表明,MnOOH的自由电子可以有效地转移到BiVO_(4)上,诱导缺电子Mn位(Mn^((3+δ)+))的产生,从而自发地促进H_(2)O及其中间体的吸附,增强四电子WOR反应,导致H_(2)O_(2)的高效生成。本文关于助催化剂与主体催化剂之间强相互作用的工作为其它高效催化材料的合理设计提供了一种新的思路。 展开更多
关键词 光催化 H_(2)O_(2)生产 MnOOH助催化剂 单晶BiVO_(4) H_(2)O吸附
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Health benefits of traditional Chinese sports and physical activity for older adults: A systematic review of evidence 被引量:19
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作者 Yucheng Guo haiyang shi +1 位作者 Dinghai Yu Pixiang Qiu 《Journal of Sport and Health Science》 SCIE 2016年第3期270-280,382,共12页
Background: Traditional Chinese sports and physical activities(PAs) have a long history and are practiced by millions of Chinese. However,relatively few systematic reviews of the scientific evidence for their health b... Background: Traditional Chinese sports and physical activities(PAs) have a long history and are practiced by millions of Chinese. However,relatively few systematic reviews of the scientific evidence for their health benefits, especially for older Chinese adults, have been undertaken.Evidence acquisition: Between January and March 2016, a systematic search was conducted using the CNKI and Pub Med databases to identify studies published between 2000 and 2015. Studies were selected for review if they were designed specifically to evaluate the health benefits of traditional Chinese sports and PAs in adults aged 50 years and older in the Mainland of China. The studies included observational, uncontrolled,and randomized and controlled designs. Papers published without an English title or abstract were excluded.Evidence synthesis: The initial search identified a total of 229 studies. After removing duplicates and studies that did not meet the inclusion/exclusion criteria, 95 studies were selected for review. Special attention was given to studies of the most commonly practiced activities: Tai Ji Quan,Qigong, and Yangko exercises. A positive association between these types of exercise and health benefits was noted for healthy older adults and those with chronic diseases. Evidence on other types of activities was less clear due to the limited number of studies conducted.Conclusion: There is promising evidence that traditional Chinese sports and PAs provide many health benefits for older Chinese adults. While additional scientifically rigorous research is warranted, promoting these traditional and culturally-based sports and PAs as forms of behavioral medicine in primary and secondary prevention of diseases among the aging Chinese population will help fulfill an urgent public health need. 展开更多
关键词 CHINESE culture CHINESE martial ARTS ELDERLY Health Physical activity SPORTS
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CirroData: Yet Another SQL-on-Hadoop Data Analytics Engine with High Performance
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作者 Zheng-Hao Jin haiyang shi +2 位作者 Ying-Xin Hu Li Zha Xiaoyi Lu 《Journal of Computer Science & Technology》 SCIE EI CSCD 2020年第1期194-208,共15页
This paper presents CirroData,a high-performance SQL-on-Hadoop system designed for Big Data analytics workloads.As a home-grown enterprise-level online analytical processing(OLAP)system with more than seven-year resea... This paper presents CirroData,a high-performance SQL-on-Hadoop system designed for Big Data analytics workloads.As a home-grown enterprise-level online analytical processing(OLAP)system with more than seven-year research and development(R&D)experiences,we share our design details to the community about how to achieve high performance in CirroData.Multiple optimization techniques have been discussed in the paper.The effectiveness and the efficiency of all these techniques have been proved by our customers'daily usage.Benchmark-level studies,as well as several real application case studies of CirroData,have been presented in this paper.Our evaluations show that CirroData can outperform various types of counterpart database systems in the community,such as"Spark+Hive","Spark+HBase",Impala,DB-X/Y,Greenplum,HAWQ,and others.CirroData can achieve up to 4.99x speedup compared with Greenplum,HAWQ,and Spark in the standard TPC-H queries.Application-level evaluations demonstrate that CirroData outperforms"Spark+Hive"and"Spark+HBase"by up to 8.4x and 38.8x,respectively.In the meantime,CirroData achieves the performance speedups for some application workloads by up to 20x,100x,182.5x,92.6x,and 55.5x as compared with Greenplum,DB-X,Impala,DB-Y,and HAWQ,respectively. 展开更多
关键词 CirroData high performance SQL-on-Hadoop online analytical processing(OLAP) Big Data
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水管理对干旱区盐渍化与土地退化中和的影响
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作者 施海洋 罗格平 +12 位作者 Edwin H.Sutanudjaja Olaf Hellwich 陈曦 丁建丽 吴世新 何秀凤 陈春波 Friday U.Ochege 王渊刚 凌青 艾里西尔·库尔班 Philippe De Maeyer Tim Van de Voorde 《Science Bulletin》 SCIE EI CAS CSCD 2023年第24期3240-3251,M0006,共13页
通过优化灌溉和水资源管理以减少耕地土壤盐渍化对实现土地退化中和至关重要.各种灌溉和水资源管理措施对流域尺度盐渍化的缓解作用的有效性和可持续性尚不明确.本研究利用遥感技术估算了1984-2021年干旱区耕地的表层土壤盐度.然后,利... 通过优化灌溉和水资源管理以减少耕地土壤盐渍化对实现土地退化中和至关重要.各种灌溉和水资源管理措施对流域尺度盐渍化的缓解作用的有效性和可持续性尚不明确.本研究利用遥感技术估算了1984-2021年干旱区耕地的表层土壤盐度.然后,利用贝叶斯网络分析比较了十个大型干旱区流域(尼罗河、底格里斯-幼发拉底河、印度河、塔里木河、阿姆河、伊犁河、锡尔河、准格尔盆地、科罗拉多河和圣华金河流域)的土壤表层盐度对水资源管理(如各种灌溉和排水方式)的时空响应.在开发水平较高的流域,管理者采用滴灌和地下水灌溉,通过降低地下水水位有效地控制了土壤盐度.对于仍采用传统漫灌的流域,经济发展和政策支持对于建立“改善灌溉系统——降低盐度——增加农业收入”的良性循环至关重要.这也是实现土地退化中和目标的关键. 展开更多
关键词 Soil salinization Land degradation neutralization IRRIGATION Water management Bayesian networks DRYLANDS
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Comparative proteomic analysis of plasma from bipolar depression and depressive disorder:identification of proteins associated with immune regulatory 被引量:1
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作者 Jin Chen ChengLong Huang +10 位作者 YiRen Song haiyang shi Dong Wu YongTao Yang ChengLong Rao Li Liao You Wu JianYong Tang Ke Cheng Jian Zhou Peng Xie 《Protein & Cell》 SCIE CAS CSCD 2015年第12期908-911,共4页
Bipolar disorder(BD)is a debilitating psychiatric mood dis-order affecting approximately 1%-3%of the population worldwide(Merikangas,2007).Bipolar disorder is characterized by recurrent episodes of depression,hypomani... Bipolar disorder(BD)is a debilitating psychiatric mood dis-order affecting approximately 1%-3%of the population worldwide(Merikangas,2007).Bipolar disorder is characterized by recurrent episodes of depression,hypomania,mania,or mixed states,and it has a poor outcome,with high rates of relapse,lingering residual symptoms,cognitive impairment,and functional impairment(Moreno et al.,2007)Although various etiopathological hypotheses concerning the disease have been reported,the pathophysiology underlying BD remains poody understood(Gawryluk and Young,2011). 展开更多
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