Results 111 to 120 of about 502,313 (277)

Engineering 2D Materials for High‐Current‐Density Electrocatalytic Water Splitting

Rare Metals, EarlyView.
ABSTRACT Water electrolysis is a key method for sustainable hydrogen production, using water as an abundant resource. However, efficient and stable operation at high current densities remains challenging due to energy losses, catalyst degradation, and limited ion–electron transport.
Tianqi Guan, Mingjie Wang, Hanyuan Zhang, Shutong Qin, Yutong Feng, Jiao Dai, Weilin Xu, Jun Wan, Huanyu Jin   +8 more
wiley   +1 more source

Estimates for eigenvalues of Dirichlet biharmonic operator on hyperbolic manifold(双曲流形上的Dirichlet重调和特征值估计)

Zhejiang Daxue xuebao. Lixue ban, 2009
利用Payne-Pólya-Weinberger引入的而被杨洪苍教授改进的“实验函数技巧”的方法,通过对实验函数g的适当选取,得到了双曲流形上的Dirichlet重调和特征值的估计.
LUMin(陆敏)
doaj   +1 more source

Deep Learning–Driven Surface‐Enhanced Raman Scattering–Lateral Flow Immunoassay With Au Nanostars for High‐Accuracy Respiratory Virus Detection

Rare Metals, EarlyView.
ABSTRACT The high accuracy in surface‐enhanced Raman scattering‐lateral flow immunoassays (SERS–LFIAs) is critical for reliable point‐of‐care testing (POCT) in clinical diagnostics. Conventional approaches are often affected by sampling variability and uneven distribution of immunoprobes, leading to unreliable signal fluctuations.
Shuai Zhao, Yan‐Yan Li, Cheng‐Long Lin, Mei‐Mei Xu, Wei‐Da Zhang, Dan Li, Yu‐Si Peng, Masaki Tanemura, Tian‐Shuo Zhao, Yong Yang   +9 more
wiley   +1 more source

Two-point boundary value problems of a class of singular fourth-order ordinary differential equations(一类奇异4阶常微分方程的两点边值问题)

Zhejiang Daxue xuebao. Lixue ban, 2010
考察了4阶两点边值问题的正解，其中非线性项f（t，u，v）可以在t=0，t=1及u = 0，v=0处奇异.结论表明这个问题可以具有1~3个正解，只要非线性项的连续部分在某些有界集上的“高度”都是适当的.
YAOQing-liu(姚庆六)
doaj   +1 more source

Orbitally Driven Anomalous Thermal Transport Under High Pressure in Gallium Nitride

Rare Metals, EarlyView.
ABSTRACT Extreme conditions such as high pressure offer opportunities for innovative materials design and applications. For over a century, studies on thermal transport in crystals under high hydrostatic pressure have shown that lattice thermal conductivity generally exhibits a monotonic increase with pressure.
Zong‐Hao Yuan, Ai‐Ling Chen, Dong‐Hai Wei, Tian‐Fu Cao, Lin‐Feng Yu, Xiao‐Xia Wang, Hui‐Min Wang, Tao Ouyang, Guang‐Zhao Qin   +8 more
wiley   +1 more source

极紫外掩模的同步辐射在波长高分辨成像仿真研究

He jishu
极紫外（Extreme Ultraviolet，EUV）光刻要求近乎无缺陷的EUV掩模，需要对EUV掩模缺陷进行高分辨率的在波长成像分析，分析结果用于后续的修复工艺。同步辐射可以提供优质、洁净的EUV光，结合傅里叶合成照明技术，可有效合成较大的数值孔径（Numerical Aperture，NA），实现对EUV掩模缺陷的高分辨分析，该技术已在多个国际同步辐射装置上得到广泛应用。受限于传统圆形波带片数值孔径特性，国际上EUV掩模检测的最高分辨率仅达到22 nm。为了进一步提升成像分辨率 ...
苏 子净, 刘 海岗, 孟 祥雨, 张 祥志, 赵 波, 郭 智, 王 勇, 邰 仁忠   +7 more
doaj   +1 more source

The Dirichlet boundary value problem on a left sub-domain of the level- 3 Sierpinski Gaskets(SG3左半定义域上的Dirichlet 边值问题)

Zhejiang Daxue xuebao. Lixue ban, 2019
调和函数在SG3 上的Dirichlet 边值问题是分形分析领域的重要研究内容之一。考虑通过垂直切割自相似图形SG3，得到SG3 上的特定定义域。对于边界值为Cantor 集的新的自相似图形，试图探讨在该定义域上的性质。在研究SG3 左半定义域上的Dirichlet 边值问题的过程中，借助SG3 上的二元有理点的调和函数值和正则导数求解格林函数。进一步，运用调和函数的有限能以及弱公式化等方法，最终得到了SG3左半定义域上的格林函数表达式及其相应的定理。
CAIJiejie(蔡洁洁), WUBo(吴波)
doaj   +1 more source

In Situ MOF Pyrolysis Construction of Hierarchical Porous Co‐Nanoparticles/Carbon Cloth Composites for Enhanced Electromagnetic Wave Shielding and Absorption

Rare Metals, EarlyView.
ABSTRACT The development of high‐performance electromagnetic protection materials integrating broadband absorption and effective shielding capabilities is hindered by challenges in simultaneously optimizing multiple electromagnetic properties through conventional material designs.
Changlong Du, Lei Yu, Jieping Wang, Sichun Xiong, Pengpeng Mou, Lianrui Li, Zhi Nie, Gengping Wan, Jianguo Wen, Guizhen Wang   +9 more
wiley   +1 more source

Existence and multiplicity of positive solutions to nonlinear fourth-order three-point boundary value problems(非线性四阶三点边值问题的正解存在性与多解性)

Zhejiang Daxue xuebao. Lixue ban, 2008
考察了非线性四阶三点边值问题的正解.通过构造适当的锥并且利用相应的积分方程证明了n个正解的存在性.主要工具是锥上的Krasnosel'skii不动点定理.
YAOQing-liu(姚庆六)
doaj   +1 more source

Gravity‐Driven Inclination Sensor Based on Liquid Metal Interface Migration in Anisotropic Microchannels for Information Transmission and Continuous Surface Topography Scanning

Rare Metals, EarlyView.
ABSTRACT With the continuous advancement of materials science and technology, the rare metal gallium has increasingly emerged as a promising alternative to the toxic metal mercury. Although existing research has predominantly focused on the high electrical conductivity and excellent deformability of liquid metal (LM), its intrinsic fluidic property ...
Feifan Guo, Fei Zhan, Guoqing Wang, Xuedong Qiang, Min Mao, Hongbin Zhao, Lei Wang   +6 more
wiley   +1 more source