Results 81 to 90 of about 24,784 (188)

Sodiumation of Biomass‐Derived Quinones Enables High‐Rate and Long‐Life Cathodes for Sodium‐Ion Batteries

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT Biomass‐derived quinones are promising green and sustainable cathode materials for sodium‐ion batteries (SIBs), yet their practical application is hindered by poor cycling stability due to dissolution in conventional electrolytes. Herein, we demonstrate that sodiumation is an effective strategy to enhance both rate capability and cycling ...
Xinyue Zhu   +4 more
wiley   +1 more source

不同坡度下玉米生长期紫色土坡面径流及其

open access: yesShuitu Baochi Xuebao, 2019
为探明紫色土横垄坡面径流与可溶性有机碳流失对不同坡度的响应特征,通过径流小区和野外人工模拟降雨相结合的方法,探讨了不同坡度条件下玉米各生育期地表径流、壤中流及其可溶性有机碳(DOC)流失特征。结果表明:玉米各生育期同一降雨时间段地表径流量均表现为20° > 15° > 10°,壤中流径流量却表现为10° > 15° > 20°。不同坡度下,玉米生育期地表径流量大小总体表现为苗期 > 成熟期 > 拔节期 > 抽雄期,壤中流量整体表现为抽雄期 > 拔节期 > 苗期 > 成熟期 ...
可溶性有机碳流失特征何淑勤   +3 more
doaj  

基于CDEGS的交流供电方式下城市轨道交通工频电磁场分析

open access: yesGaoya dianqi, 2020
为了避免直流牵引供电系统的杂散电流问题,在地铁、轻轨等城市轨道交通设计中,越来越多的考虑和采用交流供电制式。通过对城市轨道交通交流供电方案进行分析,基于某城市的某地铁机场线路结构数据,运用CDEGS软件建立了交流供电方式下的城市轨道交通牵引供电系统模型,研究分析了交流供电方式下城市轨道交通沿线电磁场分布及其电磁辐射对人体和周围环境的影响。结果表明:牵引网空间电场以铁路中心点呈对称分布;随着距离铁路中心点垂直距离的增加,电场强度先增加后减少;单车工况下牵引网空间磁场呈不成对称分布 ...
靳忠福
doaj  

An analysis of the distance parameter of spatial interaction model in the greater Tokyo metropolitan area [PDF]

open access: yes, 1985
Thesis--University of Tsukuba, D.Sc.(A), no. 295, 1985.
Ito Satoru, 伊藤 悟
core  

Vertically Oriented Single‐Layer Grains for a Highly Bifunctional Perovskite Photovoltaic Light‐Emitting Device

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT The realization of bifunctional perovskite devices integrating photovoltaic (PV) and light‐emitting diode (LED) capabilities requires precisely controlled grain architectures to facilitate dual carrier transport pathways. In this work, sulfaguanidine (SG) molecules were introduced into the perovskite solution to reconstruct the crystallization
Jiong Li   +7 more
wiley   +1 more source

Smart LED Lighting with brightness control and adjustable color temperature [PDF]

open access: yes, 2015
光带给人类以光明与希望。LED光源更是在照明领域崭露头角,与传统的照明方式相比,LED照明不仅能简单地进行亮度调节,还能进行各种色彩与色温调节。本论文根据市场对节能、健康、舒适和智能照明的需求,设计并实现了一款调光调色温球泡灯智能控制系统。设计开发了一款10W的2.4G射频智能调光调色温LED照明驱动系统,可实现30米距离的遥控控制。该驱动系统所涉及功率范围能功率因数大于0.8。在此基础上提出一种基于PWM的算法对两路白光LED进行独立的调光调色温,完成了控制电路和遥控器的整套系统集成 ...
陈巧敏
core  

Synergy of Built‐In Electric Field and Surface Reconstruction of Co–NiS/Ni3S2 Nanowires for Enhanced Bifunctional Activity and Anti‐Chlorine Corrosion in Seawater Electrolysis

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT The development of efficient and stable bifunctional electrocatalysts is a key challenge for the industrialization of hydrogen production by water electrolysis. In this work, Co‐doped NiS/Ni3S2 heterostructured nanowire arrays (Co–NiS/Ni3S2 NA) were successfully constructed by precisely modulating the phase‐selective behavior of nickel ...
Xing‐Hang Liu   +2 more
wiley   +1 more source

A study on regional differences of air passenger flow patterns and the cause of the regional differnces [PDF]

open access: yes, 1992
Chapter 1 Introduction I-1 Previous studies Regular air service in Japan was begun on 1922 or 1923 by Japan Air Transport Institute (Sakai-Tokushima), East and West Regular Air Service (Tokyo-Osaka) and Japan Air Lines (Osaka-Beppu) (Kimura and Masui ...
Ida Yoshiyasu, 井田 仁康
core  

Tunable Redox‐Active Anhydride‐Based Linear Polymer as Organic Cathodes for Chemically Self‐Charging Aqueous Zinc–Ion Batteries

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT Chemically self‐charging aqueous zinc‐ion batteries (AZIBs) have emerged as promising candidates for energy storage technologies owing to their environmental autonomy and structural simplicity. Nonetheless, the self‐charging performance is significantly compromised by the limited potential difference between cathodes and oxygen, as well as the
Yan Wang   +5 more
wiley   +1 more source

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