Results 41 to 50 of about 1,691,948 (154)
ABSTRACT Currently, the photocatalytic performance of ZnO has been severely limited by its weak light response ability and sluggish charge carrier dynamics, which considerably hinder its extensive application in photocatalytic fields. Herein, through anchoring the synthesized K6PMo11FeO40·nH2O (PMo11Fe) onto ZnO nanosheets, a novel S‐scheme ...
Xinjia Zhang +8 more
wiley +1 more source
通过对一年生和多年生的生物质及其热解油组成的分析,探讨了影响生物质热解油组成及其酸度的重要因素是生物质中的金属盐矿物质,金属盐舍量增加,致使热解油收率降低、酸含量增加。对现有的生物质热解工艺进行了比较和评述 ...
姚建中 +4 more
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ABSTRACT Lignin hydrogenolysis is a promising route to separable aromatic monomers, yet practical upgrading is still hindered by macromolecular mass‐transfer limitations and the aggregation/deactivation of metal sites. Herein, we propose a “dual‐confinement” strategy to construct ultrafine Ru nanoclusters supported on lignin‐based N‐doped hierarchical ...
Tianjin Li +11 more
wiley +1 more source
本发明公开了一种净化水质生物沉床的方法,它包括下列步骤:A、沸石床的制作;B、沸石的处理;C、调节沸石床在水面下的深度;D、沉水植物的栽种;E、沸石床可固定或不固定;F、调节沸石床,以保持沉水植物的生长和水体的景观。本发明改善了受富营养化污染水体的质量,提高了水体的透明度,遏止了“藻华”的爆发,促进了水域中生物多样性的恢复,制作简单,成本低 ...
敖鸿毅, 付长营, 高镜清, 方涛
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ABSTRACT TiN films deposited by physical vapor deposition (PVD) are widely used as protective films due to their high hardness and wear resistance. However, their application under high‐load conditions is limited by poor load‐bearing capacity and susceptibility to spalling on soft substrates.
Ziyu Wang +6 more
wiley +1 more source
本文介绍了利用生物质废弃物和微生物制氢的几种技术,分析了每种技术的制氢原理、制氢效益和发展状况;并提出生物质催化气化制氢是实现能源结构转变及环境保护的有效手段 ...
常杰, 吕鹏梅
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ABSTRACT Lithium metal anode and zinc metal anode have attracted considerable attention owing to their high theoretical capacity, low electrochemical potential, and superior electronic conductivity. However, their practical applications are greatly hindered by inherent issues such as uncontrollable dendritic growth and interfacial instability ...
Jing Wang +10 more
wiley +1 more source
本发明公开丁一种植物生长调节组合物,除了常规的惰性加工助剂外,含有作为活性成分的下列组合:A)天然脱落酸和B)2,4-D丙酸;同时该植物生长调节组合物,还可包括组分C)至少一种选自下列的植物生长调节物质:草甘膦,茉莉酸 ...
陈虎保, 李大祥, 谭红, 范先国
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ABSTRACT Ti‐15Mo‐2.5Ag alloy exhibited a low modulus and strong antibacterial ability but poor bioactivity. To resolve this problem, sandblasting and anodization were used to create a hydrophilic and nano‐Ag2O‐containing TiO2 coating. Subsequently, the microstructure and physicochemical properties were investigated by scanning electron microscopy, X ...
Yanchun Xie +11 more
wiley +1 more source
生物同质化是指特定时间段内两个或多个生物区在生物组成和功能上的趋同化过程, 包括遗传同质化、种类组成同质化和功能同质化三个方面.近年来, 生物同质化问题已引起生态学界的高度重视, 成为保护生物地理学的一个全新议题, 但在国内的相关研究较少.本文从生物同质化概念的发展历程入手, 对生物同质化三个方面的度量方法和驱动因素分别做了介绍和评述, 指出外来物种入侵和本土物种灭绝是导致生物同质化的最主要原因, 其他能促进这两个过程的活动, 如环境退化和干扰、城市化和生境同质化等都会对生物同质化有影响 ...
姜闯道 +4 more
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