Results 21 to 30 of about 388,017 (131)

Liquid/Solid EGaIn@Ag Heterostructure Catalyst Enabling CO2 Electroreduction to CO in a Three‐Membrane Electrolyzer With Co‐Production of K2CO3 and Cl2

open access: yesRare Metals, Volume 45, Issue 9, September 2026.
ABSTRACT Electrochemical carbon dioxide reduction reaction (CO2RR) powered by renewable electricity offers a sustainable route for producing value‐added carbonaceous chemicals. Herein, a three‐membrane electrolyzer was employed to directly co‐generate carbon monoxide (CO), chlorine (Cl2), and potassium carbonate (K2CO3) from the electrolysis of CO2 and
Shuai Wu   +10 more
wiley   +1 more source

In Situ Rare Earth Nanoparticle Reinforcement of NiCoCrAlYTa Coatings via HCPEB Modification: Insights Into Early Oxidation Behavior and Microstructural Evolution

open access: yesRare Metals, Volume 45, Issue 9, September 2026.
ABSTRACT NiCoCrAlYTa coatings are widely used as bond coats in thermal barrier coating (TBC) systems for gas turbines and aeroengines to provide oxidation resistance and support the formation of a protective thermally grown oxide (TGO). Herein, high‐current pulsed electron beam (HCPEB) modification was utilized to strengthen a NiCoCrAlYTa coating by ...
Xiangcheng Li   +6 more
wiley   +1 more source

MoS2‐Modified Bamboo‐Like Nitrogen‐Doped Carbon Nanotubes Encapsulating Ni Nanoparticles Enabling Synergistic Adsorption–Catalysis for High‐Performance Lithium–Sulfur Batteries

open access: yesRare Metals, Volume 45, Issue 8, August 2026.
ABSTRACT The commercialization of lithium–sulfur batteries (Li–S batteries) has been hindered by the shuttle effect of lithium polysulfides (LiPSs) and sluggish redox kinetics. In this study, we constructed a three‐dimensional hollow conductive network host material for sulfur with synergistic enhancement effects.
Jie Yang   +6 more
wiley   +1 more source

Doping‐Engineered Modulation of Oxygen Vacancy Formation Energy in Gallium Oxide for High‐Performance Solar‐Blind UV Photodetectors

open access: yesRare Metals, Volume 45, Issue 8, August 2026.
ABSTRACT Solar‐blind ultraviolet (UV) photodetectors (SBPDs) play a critical role in applications including UV communication and fire warning systems. Gallium oxide (Ga2O3) has emerged as a promising material due to its wide bandgap and low cost, but suffers from high dark current and slow response speed caused by oxygen vacancy (VO) defects. This work
Yuhao Lin   +14 more
wiley   +1 more source

气体激光中的对流效应 [PDF]

open access: yes, 1984
介质流动对于气体激光功率输出的大幅度提高,起着决定性的作用。分析表明:表征连续波激光的饱和强度和光功率密度(或小信号增益系数)均随流速而非线性地增大,并趋向各自的极限值;饱和强度的增加量约不超过10倍;光功率密度的大幅度增加起因于激励能在气流中的累积。这些结论与常用理论关于饱和强度随流速线性且无限地增大,光功率密度增大起因于饱和强度增大的结论并不相同 ...
高智
core   +2 more sources

Dual‐Functional Carbon Dots as Electrolyte Additives for Enhancing Cathode Catalysis and Anode Stability in Li–O2 Batteries

open access: yesRare Metals, Volume 45, Issue 8, August 2026.
ABSTRACT Li–O2 batteries garner widespread attention owing to their remarkable theoretical specific capacity. Nevertheless, the feasible implementation of the system is hindered by sluggish cathode reaction kinetics and poor anode stability. Herein, the carbon dots (CDs) with ‐OH, ‐NH2, and ‐COOH groups are synthesized and employed as electrolyte ...
Ying Li   +9 more
wiley   +1 more source

Farm‐Scale Recharge Pits for Improving Local Groundwater Availability: Insights From a Hardrock Watershed in Rajasthan, India

open access: yesWorld Water Policy, Volume 12, Issue 3, August 2026.
ABSTRACT Groundwater depletion is a major challenge in semiarid, hard‐rock regions where irrigation demands often exceed natural recharge. This study evaluates the effectiveness of farm‐scale recharge pits as a local, supplementary, and community‐managed groundwater recharge solution in the Dharta catchment of Rajasthan, India. Alongside check dams and
Prahlad Soni   +4 more
wiley   +1 more source

Between Dependence and Alienation: Understanding the Digital Minimalist Behavior of Chinese Millennials—An Analysis Based on SEM and fsQCA

open access: yesJournal of Adolescence, Volume 98, Issue 5, Page 1715-1736, July 2026.
ABSTRACT Introduction Following rapid iterations in media technologies, Chinese millennials (born between 1980 and 1995) find themselves in a paradoxical state where digital saturation exists alongside fatigue, making them central practitioners of digital minimalist behavior.
Chao Zhang, Yinze Hao, Jingwen Li
wiley   +1 more source

受对流边界层影响的过山气流

open access: yes, 1994
建立了一个自由大气与对流边界层相耦合的解析模式 ...
齐瑛, 傅抱璞
core   +2 more sources

深水井筒两相流温度分布计算方法研究

open access: yesHaiyang gongcheng zhuangbei yu jishu, 2018
气液两相流广泛存在于深水油气开采过程中,由于水下井口装置的结构限制,只能测得油管流体和生产环空流体的井口温度。本文考虑气液两相流体在生产过程的传热机理,基于质量,动量和能量守恒方程,通过拟稳态法建立深水井筒两相流温度分布计算模型。计算结果表明,油管流体及环空流体温度随着井深的降低而降低,最外层环空温度变化最大;油管井口温度随着管内气体的表观速度增加而降低,随着液体的表观速度增加而增加。气液流速比越低,油管流体井口温度越高,气液流速比越高,井口温度越低;环空温度随着气液流速比的增加而降低。
唐宜家, 马天寿, 何玉发, 陈平
doaj  

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