Results 41 to 50 of about 1,355,674 (190)

具阻尼及动态边界条件的弹性板的指数可稳定性(英文)

open access: yes四川大学学报. 自然科学版, 2004
研究了具阻尼及动态边界条件的弹性板的指数可稳定性.运用C0 半群指数稳定性的频率域判据,得到了这种弹性系统的指数稳定性.
蒋卫生, 刘艳, 黄发伦
doaj  

Poverty, Inequality, and Social Security During the COVID‐19 Pandemic: Evidence From Linked Swiss Tax Data

open access: yesPoverty &Public Policy, Volume 18, Issue 3, September 2026.
ABSTRACT This paper examines the impact of the COVID‐19 pandemic on income and wealth inequality in Switzerland, with a particular focus on poverty dynamics and the role of the social security system. Using newly linked administrative tax data for four large cantons covering over a third of the Swiss population, we track changes in household income and
Oliver Hümbelin   +2 more
wiley   +1 more source

Advanced Electrospun Nanofiber Epidermal Electronics for Electrophysiological Monitoring: From Conformal Interfaces to Multimodal Closed‐Loop Systems

open access: yesRare Metals, Volume 45, Issue 9, September 2026.
ABSTRACT Epidermal bioelectronics is a transformative technology for continuous health monitoring and human‐computer interaction. However, the mechanical and physiological mismatch at the skin–device interface limits its long‐term application. Electrospun nanofiber membranes (ENMs), with their unique three‐dimensional hierarchical porous network and ...
Jiahua Ni   +7 more
wiley   +1 more source

A Locally Retentive HfO2–STING Nano‐Radiosensitizer Hydrogel for Enhanced Radioimmunotherapy in Esophageal Cancer

open access: yesRare Metals, Volume 45, Issue 9, September 2026.
ABSTRACT Esophageal squamous cell carcinoma (ESCC) remains associated with frequent local recurrence and distant metastasis despite advances in radiochemotherapy and immunotherapy, highlighting the need for therapeutic strategies that improve both local tumor control and systemic antitumor immune responses.
Dongdong Wang   +7 more
wiley   +1 more source

分数阶随机微分方程的修正隐式数值格式

open access: yes四川大学学报. 自然科学版, 2015
对H>1/2且随机积分为前向积分的分数阶布朗运动驱动的随机微分方程,为改善显式Euler格式和Milstein格式的稳定性,基于修正隐式技术构造了修正隐式Euler格式和Milstein格式,证明了修正隐式格式较显式格式有更大的稳定步长集,且在一定条件下修正隐式Euler格式是A稳定的.数值模拟显示,步长在稳定步长集内时数值格式稳定,步长在稳定步长集边界附近时误差几乎不改变,而步长在稳定步长集外时数值格式极度不稳定,从而验证了修正隐式格式在保持数值稳定性上的优越性和稳定步长集的合理性.
王维滨, 罗懋康
doaj  

Nanoporous/Nanocrystalline/Amorphous Multiphase Surfaces on Amorphous Alloy Fibers for Enhanced Oxygen Evolution Reaction Performance

open access: yesRare Metals, Volume 45, Issue 9, September 2026.
ABSTRACT The development of high‐performance and cost‐effective oxygen evolution reaction (OER) electrocatalysts is critical for the large‐scale deployment of green hydrogen technologies. Among various candidates, amorphous alloys have emerged as promising OER catalysts owing to their long‐range disordered atomic structures, high energy states, and ...
Bo Li   +10 more
wiley   +1 more source

激波稳定性(Ⅱ)

open access: yes, 1989
本文用D′yakov的normal mocle方法讨论任意状态方程介质中的平面定常激波在二维小扰动下的稳定性,用直接的数学方法和新的物理考虑导出激波稳定性与参数i~2(dv/dp)_H在不同流场条件下的关系,结果表明此关系比较复杂,而过去的D yakov-Erpenbeck不稳定条件只是一个极端情形。尤其是发现在参数i~2(dv/dp)_H的两个稳定区域之间还存在不稳定区域,而这正对应于Griffiths等的实验中所观察到的不稳定激波,将结果用于完全气体激波时发现当绝热指数r>5/3时激波可能不稳定 ...
黄迎雷
core   +1 more source

AunCu2(n=1~4)团簇的量子化学研究(英文)

open access: yes四川大学学报. 自然科学版, 2008
在相对论有效势近似下,用密度泛函方法B3LYP和LANL2DZ基组,系统计算了金掺杂铜原子团簇AunCu2(n=1~4)的可能稳定结构,确定了低能量异构体的稳定结构.比较研究AunCu2和Aun的稳定性,结果表明:掺入两个Cu原子改变了纯金团簇的稳定性趋势.计算结果还再现了封闭结构稳定性的振荡性.
魏成富, 郭建军, 许生林
doaj  

The Evolution of Metal Halide Perovskite Transistors

open access: yesRare Metals, Volume 45, Issue 9, September 2026.
ABSTRACT Metal halide perovskites (MHPs) offer a revolutionary pathway for next‐generation field‐effect transistors (FETs) because of their exceptional carrier mobilities and cost‐effective processability. However, their transition to practical electronics is significantly challenged by intrinsic instability and imbalanced charge transport. This review
Jiangnan Xia   +8 more
wiley   +1 more source

Predictive M‐Site Design of MAX‐Derived CoNi Composites: Dual‐Scale TaC + L12 Strengthening Enabled by Rare Metal Ta

open access: yesRare Metals, Volume 45, Issue 9, September 2026.
ABSTRACT In MAX‐phase‐derived metal–matrix composites, the M‐site element simultaneously governs carbide chemistry and matrix precipitate stability, yet it has traditionally been selected empirically rather than from a predictive criterion linking M‐site choice to carbide chemistry, matrix alloying, and L12 stability; moreover, the reaction pathway ...
Wei Yang   +8 more
wiley   +1 more source

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