Results 11 to 20 of about 11,519 (169)

Cavity‐Confined Indium Single‐Atom Catalysts Enable Localized Electron Enrichment for Highly Efficient and Selective Photocatalytic CO2 Reduction

open access: yesRare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT Single‐atom catalysts are attractive for CO2 photoreduction due to their maximized atomic utilization and tunable electronic structures. In this study, indium (In) single atoms were incorporated into graphitic carbon nitride (CN) through an impregnation‐assisted thermal polycondensation strategy.
Xueying Guo   +6 more
wiley   +1 more source

Internal physiological drivers of leaf development in trees: Understanding the relationship between non‐structural carbohydrates and leaf phenology

open access: yesFunctional Ecology, Volume 40, Issue 5, Page 1151-1164, May 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Plant phenology is crucial for understanding plant growth and climate feedback. It affects canopy structure, surface albedo, and carbon and water fluxes. While the influence of environmental factors on phenology is well‐documented, the role of plant intrinsic factors ...
Yunpeng Luo   +8 more
wiley   +1 more source

Electrospinning Synthesized Cd0.3Zn0.7S@PVDF/PAN Piezoelectric Nanofiber Membrane for Efficient Photocatalytic Hydrogen Evolution

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Photocatalytic hydrogen evolution technology is a crucial approach to achieve efficient solar energy conversion and green hydrogen production. However, traditional semiconductor photocatalysts often face issues such as weak visible‐light response, high photogenerated charge carrier recombination, and poor structural stability, severely ...
Longtao Guo   +8 more
wiley   +1 more source

在水生与气生状态下石莼光合作用对光照和温度的响应(英文) [PDF]

open access: yes, 2003
如何对付由于高潮时的水生状态与低潮时的气生状态高频率循环所导致的不同环境条件 ,是潮间带海藻的光合作用所面临的独特问题。对采自汕头沿岸的石莼 (Ulvalactuca)在水生和气生不同状态下光合作用对光照和温度的响应特性进行了测定 ,以探讨这种常见的潮间带绿藻在潮汐循环背景下的光合特性。在气生状态下 ,光饱和净光合速率 (Pmax)随气生暴露时间的变化模式可以很好地用三次方程进行描述 ,而温度影响方程的系数 ;当水分损失为 1 5 %时 ,石莼的Pmax增加至最大值 ,然后Pmax随进一步脱水而下降 ,
邹定辉,高坤山
core  

Recent Advances in Piezocatalysis and Piezo‐Photocatalysis in Energy and Environment: Materials, Design, and Applications

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Piezocatalytic technology utilizes mechanical strain or stress‐induced piezoelectric phenomena to produce robust internal electric fields, markedly improving the separation efficiency of e−‐h+ pairs. This method has emerged as a focal point in catalysis by removing reliance on conventional light or electrical energy via its mechanical‐to ...
Yue Zhou   +5 more
wiley   +1 more source

The Key Process of Colonization and Spread of Sonneratia apetala introduced in the Local Mangrove Wetland [PDF]

open access: yes, 2016
无瓣海桑(Sonneratiaapetala)于20世纪80年代引入中国后,由于其具备速生性、抗逆性等生理特点,被广泛种植于中国华南沿海地区,随着种植面积的增大,人们对于无瓣海桑的入侵潜力产生了担忧。本研究选择雷州湾北家村红树林保护区为主要研究区域,通过野外调查、野外种植、室内对照的方式研究了无瓣海桑的果实凋落、果实漂浮、土壤种子库分布、林窗内无瓣海桑的定植、光胁迫下的生理响应,为无瓣海桑防治积累了科学的理论依据。本研究结果如下: 无瓣海桑的果实一年内有两次成熟期,秋季为无瓣海桑成熟的主要季节 ...
刘凡
core  

A Review on Cracking in Laser Additive Manufacturing of Nickel‐Based Superalloys: Types, Formation Mechanisms, and Suppression Strategies

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Nickel‐based superalloys (Ni‐based superalloys) have attracted extensive attention in laser additive manufacturing (LAM) due to their capability to directly fabricate complex and high‐performance structural components. However, the rapid melting and solidification inherent to LAM result in intense thermal cycling, which induces high residual ...
Tianxiang Lin   +9 more
wiley   +1 more source

混合导光双芯光子晶体光纤及光器件研究

open access: yesGuangtongxin yanjiu, 2014
为了研究混合导光双芯PCF(光子晶体光纤)的色散特性和耦合特性,设计了一种基于全内反射和光子带隙效应两种导光机制的混合导光双芯PCF。以耦合模式理论为基础,利用有限元法和平面波展开法分析其有效折射率、耦合长度和色散特性,并对定向耦合器和光波长选择器进行了研究。仿真结果表明,该混合导光双芯PCF具有大负色散特性和良好的耦合特性。研究成果对双芯PCF的耦合特性、传感特性的理论研究及其相关器件的实际应用具有重要的参考价值。
肖颖, 董传培
doaj  

塔里木河下游地下水位对柽柳叶绿素荧光特性的影响 [PDF]

open access: yes, 2010
选取塔里木河下游3处地下水埋深>6m的监测井位作为研究点,结合典型生态监测断面的地下水位监测数据,分析不同地下水埋深处柽柳的叶绿素荧光特性和光系统的光合活性.结果表明:随着地下水埋深加大和干旱胁迫加剧,柽柳叶片的实际光化学效率、电子传输速率和光化学猝灭等参数普遍下降;非光化学猝灭和调节性能量耗散量子产量等参数显著升高,而最大光量子产量总体处于相对适宜状态.干旱胁迫下柽柳的PSII光合活性随地下水埋深增大而下降,捕获光能的过剩程度加剧,发生光抑制的几率增大,其自身良好的抗旱性和自我调节机制 ...
朱成刚   +3 more
core  

h‐BN/HfO2 Interface‐Enabled Optoelectronic Doping for Low‐Voltage, Reconfigurable MoTe2 Nanoelectronics

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Engineering the semiconductor/dielectric interface is crucial for advancing two‐dimensional (2D) nanoelectronics, where device performance is predominantly governed by interfacial defects and dielectric coupling. Optoelectronic doping based on carrier trapping at the h‐BN/SiO2 interface has enabled non‐volatile and reversible carrier ...
Zhe Zhang   +6 more
wiley   +1 more source

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