Results 71 to 80 of about 1,219,149 (166)

立正大学と関東大震災 [PDF]

open access: yes
書誌別タイトル ...
立正大学史料編纂室
core   +1 more source

Colloid‐Mediated Surface Reconstruction Through High‐Valence Element Integration Enables Stabilized Oxygen Redox and Fast Interfacial Kinetics in Li‐Rich Cathodes

open access: yesRare Metals, Volume 45, Issue 10, October 2026.
ABSTRACT Lithium‐rich manganese‐based cathodes (LRM) deliver high discharge capacities beyond 250 mAh g−1, but their practical deployment is restricted by irreversible oxygen redox, structural reconstruction, sluggish kinetics and unstable cathode‐electrolyte interfaces (CEI). Here, we develop a colloid‐assisted anchoring‐diffusion engineering strategy
Jia‐Nan Hao   +13 more
wiley   +1 more source

关于一个单位分数的问题

open access: yes四川大学学报. 自然科学版, 1984
把5/121表成三个单位分数的和,即求方程 5/121=1/x+1/y+1/z的正整数解问题,Blericher得到一组解为(x,y,z)=(25,759,208725)。但是,Bleri-cher不知道三项展开式能否具有一个小于208725的最大分母,这个问题容易解决。看来更有意义的问题是:(1)是否有max(x,y,z)>208725的解。本文得到(1)的全部解共21组,其中max(x,y,z)>208725的解一组。从而解决了以上问题。
刘元章
doaj  

Bidirectional Interfacial Chemical Regulation Enables Durable Aqueous Zn‐I2 Batteries

open access: yesRare Metals, Volume 45, Issue 10, October 2026.
ABSTRACT Aqueous Zn‐I2 batteries hold great promise for large‐scale energy storage, yet their practical deployment is hindered by coupled interfacial instabilities at both electrodes, where Zn‐anode parasitic reactions and cathodic polyiodide shuttle mutually aggravate each other.
Zimian Jia   +8 more
wiley   +1 more source

具有时滞的周期Lotka-Volterra系统的持久性与渐进稳定性(英文)

open access: yes四川大学学报. 自然科学版, 2004
研究了具有反馈的Lotka Volterra方程,给出了其正解具有持久性的充分条件.并利用Horn不动点定理,得到其正周期解的存在性.
曾永福, 徐道义
doaj  

O2−/F− Anion Co‐Migration Enabled Regulation of Grain Boundary Structure for Lower Impedance in Li0.32La0.56Fe0.01Ti0.94Sb0.06O3 Solid Electrolyte

open access: yesRare Metals, Volume 45, Issue 10, October 2026.
ABSTRACT Microstructural characterization of Li0.32La0.56Fe0.01Ti0.94Sb0.06O3 (LLFeTSO) using AC‐TEM revealed that Fe3+/Sb3+ ion co‐doping induces the migration of lattice oxygen to grain boundaries (GBs), enhancing GB conductivity. However, the atomic arrangement at the GBs remains highly ordered and lacks sufficient cation vacancy carriers.
Binxuan Jiang   +8 more
wiley   +1 more source

离散正交法(DOM)离散点的正交分析与程序设计

open access: yes, 2006
对能够求解一系列线性常微分方程组边值问题的数值计算方法--离散正交法(DOM)进行了离散点的正交分析,给出了计算机实现数值计算的程序设计原理与计算流程图,指出了该方法能够克服传统计算方法由于所求函数的快速增长所引起的边界效应和局部效应的缺点,给出了得到稳定计算过程的可能性.为了推广应用,文中介绍了离散正交法的基本原理、实现方法和求解过程,讨论了采用离散正交法来求解非线性问题的处理方法.并且以承受均布载荷的环形板为例 ...
白象忠, 田振国
core   +2 more sources

From Tetracycline to Sulfamethoxazole: Photocatalytic Degradation and Mechanistic Insights in Aquatic Environments

open access: yesRare Metals, Volume 45, Issue 10, October 2026.
ABSTRACT The pollution caused by antibiotics to aquatic ecosystems is becoming increasingly serious, thus more effective treatment methods are urgently required. Although the photocatalytic degradation behavior of tetracycline (TC) is relatively well understood, sulfamethoxazole (SMZ), an emerging pollutant originating from large‐scale livestock ...
Yihang Yang   +6 more
wiley   +1 more source

氮正离子-过渡金属催化分解环己基过氧化氢研究

open access: yes, 2013
环己烷液相氧化制备环己醇与环己酮(K/A 油)是重要的石油化工过程。其中,环己基过氧化氢(CHHP)是环己烷氧化的重要中间体,CHHP分解是环己烷氧化的关键步骤之一。目前工业分解CHHP的方法为碱分解法,该方法K/A油的总选择性较低,而且反应过程中消耗大量NaOH,产生的废碱渣对环境污染严重。如何实现无碱高效分解CHHP,对节约资源,降低生产成本,实现清洁生产和环境保护,具有重要的科学意义和应用价值。 论文首次对氮正离子-过渡金属均相催化CHHP分解的性能进行研究 ...
郑玺
core  

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