Results 11 to 20 of about 39,298 (172)

Assessing limits of sustainable seed harvest in wild plant populations. [PDF]

Conserv Biol
Abstract Seed harvesting from wild plant populations is key for ecological restoration, but it may threaten the persistence of the source populations. Consequently, several countries have set guidelines limiting the proportions of harvestable seeds. However, these guidelines are inconsistent and lack a solid empirical basis.
Bucharova A, Bossdorf O, Scheepens JF, Salguero-Gómez R.   +3 more
europepmc   +2 more sources

High‐Cycle Fatigue Behavior and Deformation Mechanisms of Al0.5CoCrFeNi High‐Entropy Alloy by Laser Powder Bed Fusion

Rare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT Laser powder bed fusion (LPBF) can fabricate high‐entropy alloys (HEAs) with refined microstructure and enhanced mechanical properties. However, the deformation and fatigue mechanisms of Al‐containing HEAs produced by LPBF remain unclear. In this work, we systematically investigate the tensile properties, deformation mechanisms, and high‐cycle
Dan Zheng, Pengda Niu, Kefu Gan, Tiechui Yuan, Ruidi Li   +4 more
wiley   +1 more source

Highly Stable Aqueous Zinc Anodes Enabled by Synergistic Modulation of Interface and Solvation Structures

Rare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT The stability of aqueous Zn2+ batteries is severely hindered by parasitic reactions at the Zn anode/electrolyte interface. Herein, itaconic acid (IA) is introduced as an effective electrolyte additive to achieve a highly stable zinc anode. Remarkably, IA concurrently modulates both the zinc anode/electrolyte interfacial structure and the Zn2 ...
Chenggang Wang, Dingzheng Li, Chuanlin Li, Xixi Zhang, Xiaoyu Luan, Xijin Xu   +5 more
wiley   +1 more source

Construction of CoP/Mn2P Heterojunctions via One‐Step Phosphorization Coupled With Hollow Hard Carbon Spheres as Supports: Enabling Ultrastable Long‐Cycle Sodium‐Ion Anodes Over a Wide Temperature Range

Rare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Driven by global energy transition and sustainability, sodium‐ion batteries (SIBs) have emerged as key alternatives to lithium‐ion batteries for low‐to‐medium energy storage, because of abundant sodium resources and low cost. However, their commercialization is hindered by the lack of anodes with high capacity, fast kinetics, and long‐term ...
Shuang‐Lin Cai, Yong‐Qi Ye, Jin wei Yan, Yu‐Han Yuan, Jia Liang, Hai Huang, Ye Zeng, Xiao‐Hong Fan, Ming‐Ming Tao, Jie Lei, Gui‐Fang Li, Yi Li, Ding‐Rong Deng, Qi‐Hui Wu   +13 more
wiley   +1 more source

Oxygen Vacancy Engineering of Ultrafine ZnAl2O4 Nanoparticles as a Robust Protective Layer for Dendrite‐Free and Long‐Lifespan Aqueous Zn Metal Anodes

Rare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT Aqueous zinc‐ion batteries (AZIBs) hold great promise for safe and sustainable energy storage, but their commercialization is impeded by severe Zn dendrite growth and interfacial instability. To address these challenges, we propose a defect engineering strategy employing ultrafine ZnAl2O4 (ZAO) nanoparticles (∼5 nm) with oxygen vacancy defects
Yilun Ren, Haifeng Bian, Qing Zhou, Biao Wang, Hao Wu, Chunrong Zhao, Bing Yu, Rong Yang, Jiantao Wang, Xiangkang Meng   +9 more
wiley   +1 more source

Regulating TGO Nucleation and Growth of MCrAlX Coatings via Femtosecond Laser Remelting: The Role of Reactive Elements in the Oxidation Resistance

Rare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT MCrAlX coatings are widely used as bond coats in thermal barrier coating systems to protect turbine blades from high‐temperature oxidation. However, their oxidation resistance is often restricted by uncontrolled microstructures, surface roughness, and aggregation of reactive elements (REs). In this study, high‐repetition‐rate femtosecond laser
Wei Qian, Xiangcheng Li, Yinqun Hua, Xiaofeng Zhang, Yong Feng, Xiaonan Wang, Szymon Tofil, Jie Cai   +7 more
wiley   +1 more source

Synergistic Anode/Cathode Optimization Engineering by Hierarchical Porous N‐Doped Carbon Fibers for Efficient Zinc Batteries

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, Qing Wu, Fu‐Sheng Luo, Jin‐Long Zhang, Ze‐Yu Yan, Xiu‐De Liu, Jun Huang   +6 more
wiley   +1 more source

Surface Sulfate Modification Promoted Excitons Extraction of BiOBr Nanosheets for Efficient 1O2 Photosynthesis and Chlorophenols Dechlorination

Rare Metals, Volume 45, Issue 2, February 2026.
ABSTRACT Photocatalytic molecular oxygen (O2) activation provides a sustainable approach to produce singlet oxygen (1O2) for organic contaminants detoxification. However, the charge carriers‐involved pathway usually suffers from unsatisfactory 1O2 production efficiency owing to energy loss caused by photogenerated hole‐mediated superoxide species (•O2−
Yan‐Biao Shi, Zhi‐Ping Yang, Chen‐Chen Zhang, Pin‐Ji Chen, Hao‐Yang Fu, Xu‐Peng Liu, Hao Li, Bo Lai, Li‐Zhi Zhang   +8 more
wiley   +1 more source

Synthesis and Properties of Platinum-based Nano-cactalysts of High Activity and Durability for Oxygen Reduction Reaction [PDF]

, 2014
成本和寿命是制约质子交换膜燃料电池（PEMFC）发展的两个重要问题。其中电池成本又可以通过延长使用寿命进行降低。因此，延长电池寿命是提升燃料电池整体性能的一个有效途径。氧还原反应(ORR)是燃料电池的阴极反应，由于其反应动力学迟缓，导致阴极极化严重。PEMFC工作中出现30%~40%的电压损失主要来自阴极ORR。与阳极氢气氧化相比，ORR需要更多的铂催化剂。因此提高阴极ORR催化剂的性能，尤其耐久性，是提升燃料电池的整体性能，降低燃料电池成本的重要途径。铂是目前最好的氧还原催化剂，鉴于铂的不可替代性 ...
王鸿辉
core  

渗水对光缆寿命的影响

Guangtongxin yanjiu, 2007
光缆的寿命是由光缆中所使用的材料寿命和光缆中光纤的寿命两方面来决定的。光缆长期使用过程中,难免要处于水汽环境中,水分对光缆材料寿命和光纤寿命均有影响。因此,光缆的渗水性能是评价光缆质量的重要指标之一,也是考核光缆环境性能的一个重要方面,是保证光缆寿命（2530年）的重要因素之一。文章探讨了水分对光缆寿命的影响以及如何采取有效措施降低这种影响。
史惠萍, 李宏强
doaj