Results 21 to 30 of about 20,004 (173)
Laser‐Driven Halide Exchange and High‐Resolution Multicolor Patterning of Perovskite Films
Rare Metals, EarlyView.ABSTRACT Translating the excellent properties of metal halide perovskites (MHPs) into practical flexible optoelectronic devices requires high‐resolution multicolor patterning techniques that are compatible with post‐fabrication processing. However, such a capability has remained elusive.
Shu Yang +6 more
wiley +1 more source
Dianci bileiqi, 1995 对电瓷原料的矿物组成进行了归类和确定了各种矿物的理论化学成分，借助微机可计算各种原料的矿物组成。本工作为配料过程和配方计算的微机化提供了有利条件。
李玉书, 李瑛
doaj
野生动物学报, 2020 本研究以12个鸟类物种为研究对象，采用全谱直读电感耦合等离子体发射光谱法（ICPOES法）测定样品中的微量元素，并对其元素的组成和含量进行分析研究。分析结果表明，17份卵壳样品中Ca 元素的含量最高，S、Na、P、Sr、Mg、K含量较高，Zn、Ce、Cu、Ta只有极少数物种的卵壳检出微量。元素检测结果采用软件IBM SPSS Statistics 22中的系统聚类法，根据元素含量对样品进行物种聚类分析，利用变异数分析法对聚类后分组物种进行元素的组间差异显著性分析。由聚类图可见 ...
孙冬婷 1 +3 more
doaj
The Main Community Structure Characteristics of Fishes in Zhangjiang Estuary Mangrove National Nature Reserve [PDF]
, 2015 本研究于2013年8月、11月、2014年3-4月、5-6月在漳江口红树林保护区三条断面进行了夏、秋、冬、春四个季节的采样，分析了漳江口红树林区鱼类的种类组成、优势种、生态类群和物种多样性及其季节变化和空间分布，探讨了主要优势种四季的体长变化特征和代表种在不同断面的体长特征，并用多元统计分析方法（聚类分析、非度量多维标度分析nMDS、相似性分析检验ANOSIM、相似性比例分析SIMPER）分析了鱼类群落结构的时空变化特征。此外，本文还初步探讨了漳江口红树林区做为鱼类产卵场、索饵场和庇护所的可能性和价值 ...
钟慧琪
core
Rare Metals, EarlyView.ABSTRACT Regulating negative parameters of metacomposites is mainly limited by their unclear mechanisms, which affects their practical applications in new sensing, communication, electromagnetic (EM) protection and other fields. This work proposes a dual‐functional competitive design strategy based on the waste corncob‐derived carbon/polyaniline ...
Qiuyun Yang +4 more
wiley +1 more source
Long-Term Trends of Macrobenthos in Southern Bohai Sea, China, in Relation toEnvironmental Changes [PDF]
, 2016 根据50多年来渤海南部海域大型底栖动物群落的历史资料,以及2011~2013年的现场调查数据,从渤海南部包括黄河口邻近海域及莱州湾大型底栖动物群落结构变化特征出发,分析了其长期演变的过程和规律,旨在阐明底栖动物群落的演变趋势,识别其重要的演变时段.并结合50年来渤海南部海域相关底栖环境因子的变化特征,探讨底栖动物群落的演变原因.过去50余年来,渤海南部海域大型底栖动物群落在物种数、生物量、丰度以及群落结构组成等方面都发生了较大的变动,具体表现为寿命长、体积大、具有高竞争力的K对策种的优势地位正逐渐丧失 ...
周政权 +5 more
core
Rare Metals, EarlyView.ABSTRACT High‐entropy alloys (HEAs) have attracted considerable interest from researchers owing to their tunable chemical compositions, exceptional structural stability, and promising catalytic properties. However, their large‐scale application is often hindered by complex manufacturing techniques and poor durability.
Sheng Guo +9 more
wiley +1 more source
Rare Metals, EarlyView.ABSTRACT The development of sodium‐ion batteries (SIBs) is limited by slow charge transfer kinetics and large material volume changes caused by the large radius of Na+. Leveraging the excellent physicochemical properties and unique heterostructures of metal selenides, ultrafine hetero‐CuFeSe2‐CoSe2 nanoparticles are in situ wrapped by ...
Ying Zhu +5 more
wiley +1 more source
The Synecological Studies on Castanopsis Forest in Fujian Province [PDF]
, 2017 锥属植物往往是亚热带常绿阔叶林的建群种，锥林研究可以为植被分类研究提供许多重要数据。本文在对福建省自然保护区内保护良好的锥林样地调查的基础上，结合收集的全省已有的多个锥林调查数据资料，对其进行群落结构、区系特征、生物多样性等群落生态学特征以及优势种种间关系研究。分析整个福建锥林群系组整体特征以及各锥林群系特征，并探讨不同锥属种群在群落中所处的作用与地位。主要结论如下： 1、锥属树种为建群种的常绿阔叶林（锥林）的乔木层常由多个种群共建，灌木层上下两层组成略有不同。由于乔灌层的郁闭度较高，草本层相对空旷 ...
江昕怡
core
Rare Metals, EarlyView.ABSTRACT Two‐dimensional (2D) nonlayered niobium nitrides have attracted considerable interest for electrochemical energy storage. However, the synthesis of these materials is hampered by their nonlayered crystal structures, which are characterized by strong three‐dimensional chemical bonding.
Rui Huo +7 more
wiley +1 more source