Results 31 to 40 of about 5,336 (213)
The research on optical properties of InN and InGaN films [PDF]
, 2016 随着人类社会进入信息化社会，信息量飞速增长。为适应生活的需求以及时代的要求，以半导体为代表的材料和器件迅速发展，遍及人类生活的各个领域。InN与InGaN材料因其带隙随In组分x变化从0.7到3.4eV连续可调，其对应的吸收光谱的波长从紫外部分(365nm)可以一直延伸到近红外部分(1770nm)，几乎完整地覆盖了整个太阳光谱，这为设计新型太阳能电池、超高亮度发光二极管（LED）以及全彩显示提供了极大的可能，所以InN与InGaN材料近年来逐渐成为研究的热点。由于薄膜的光学常数（如折射率、吸收系数 ...
叶春芽
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Novos Estudos - CEBRAP, 2021 O objetivo deste artigo é argumentar que situações de privação material são inerentemente coercitivas. Para isso, avaliam-se teorias da justiça para as quais a pobreza não representaria uma forma de intervenção coercitiva em contextos de livre-mercado. Argumenta-se aqui que a pobreza precisa ser concebida como uma posição social subordinada e, portanto,
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Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT The poor Zn chemistry of Zn metal anode and sluggish reaction kinetics of cathodes at high mass loadings are two crucial issues for hindering the application of aqueous Zn‐ion batteries (AZIBs). Herein, the hierarchical porous N‐doped carbon fibers (HPNCFs) were proposed to simultaneously optimize the reversibility of Zn plating/stripping of ...
Song Yang +6 more
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Sexo é maldição, ódio é amor [PDF]
Revista Latinoamericana de Psicopatologia Fundamental, 2015 e o amor. Porem nao se trata do amor idealizado, mas sim daquilo que ele comporta de paradoxal, da sua face maldita, obscena e tragica. E no estudo das obras literarias de Nelson Rodrigues, Gregorio de Matos e Fernando Pessoa que este livro demonstra a afirmacao freudiana de que os artistas ja sabiam o que mais tarde a psicana-lise veio revelar: a ...
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野生动物学报, 2009 在铜锌生物学作用基础上,阐述了毛皮动物对铜锌的营养需要,并根据国外的标准给出了适宜的推荐量;同时,针对毛皮动物铜锌缺乏的症状,分析其缺乏的可能原因及评价铜锌营养状况的方法;最后,结合铜锌比、铜锌超氧化物歧化酶说明铜锌两种微量元素在毛皮动物营养中的相互关系。
魏韬 +4 more
doaj
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT With the rapid development of the energy storage industry, aqueous zinc‐ion batteries (AZIBs) have attracted considerable attention in the field of energy storage because of their inherent advantages, thereby emerging as a promising research direction with significant potential.
Lingjiao Fu +8 more
wiley +1 more source
Zhongshan Daxue xuebao. Yixue kexue ban, 2014 摘 要: 【目的】 研究以钙磷为基础的含锌?氟离子矿化液对牙釉质理化性能的影响?【方法】 将因治疗需要而拔除的成人第三磨牙牙冠制作成牙釉质切片?分别以含不同浓度氟离子和锌离子的钙磷饱和矿化液处理牙釉质切片,分为处理组:CaP-ZnF? CaP-F? CaP-Zn?CaP组和双蒸水DDW对照组?采用扫描电镜?X 射线衍射仪和红外光谱仪,检测矿化液处理组和对照组牙釉质切片的表面特性?【结果】 扫描电镜观察到经矿化液处理后的牙釉质切片表面有聚集的微晶沉积?X 射线衍射仪分析牙釉质表层沉积的羟基磷灰石晶体显示 ...
谷海晶
doaj
The Study of Band Engineering and Polarization-induced Doping in AlGaN-based Deep Ultraviolet Light-Emitting Diode [PDF]
, 2016 Ⅲ族氮化物作为新一代半导体材料，具有宽直接带隙、高电子漂移率、高热导率、耐高温、抗腐蚀、抗辐射等优点，适合制作高频、高功率、耐高温和抗辐射的电子器件，比如AlGaN基紫外发光二极管。但是紫外发光二极管依然存在低量子效率、低光输出功率等问题，提高晶体质量和载流子注入效率是解决问题的两个主要思路。影响载流子注入效率的一个重要因素是内部极化场引起的能带弯曲，本文基于APSYS软件，主要围绕紫外LED的能带调控和极化诱导掺杂展开研究。 首先，本文回顾了紫外LED的发展历程，介绍了AlGaN半导体材料的结构和性质，
刘松青
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RURIS (Campinas, Online), 2015 Este ensaio tem o objetivo de apresentar um fragmento da etnografia sobre o conhecimento naturalístico dos pescadores artesanais da Carrasqueira – pequeno povoado localizado na costa central portuguesa. O material etnográfico, produzido entre os anos de 2010 e 2011, expõe como os pescadores carrasqueiros denominam alguns dos seres que constituem a ...
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Orbitally Driven Anomalous Thermal Transport Under High Pressure in Gallium Nitride
Rare Metals, Volume 45, Issue 2, February 2026.ABSTRACT Extreme conditions such as high pressure offer opportunities for innovative materials design and applications. For over a century, studies on thermal transport in crystals under high hydrostatic pressure have shown that lattice thermal conductivity generally exhibits a monotonic increase with pressure.
Zong‐Hao Yuan +8 more
wiley +1 more source