Results 11 to 20 of about 1,146,192 (165)

Ultralight N‐Doped Interconnected Porous Carbon From Lignin: Synergistic Structural and Doping Engineering for High‐Performance Electromagnetic Wave Absorption

Rare Metals, Volume 45, Issue 6, June 2026.
ABSTRACT The development of lightweight, high‐attenuation, and broadband carbon‐based electromagnetic wave absorbers is hindered by the intrinsic trade‐off between impedance matching and dielectric dissipation. Herein, we report a facile and scalable synthesis of N‐doped lignin‐derived interconnected porous carbon (Nx‐LIPC) via hydrogen‐bond self ...
Bin‐Peng Zhang, Jin Li, Le Qiao, Ping‐Xian Feng, Zhi‐Yi Huang, Qing‐Ao Peng, Chen‐Xi Liu, Huan Wang   +7 more
wiley   +1 more source

Achieving Superior Strength‐Ductility Synergy in Bionic Magnesium‐Iron Composites by Topological Optimization

Rare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT Magnesium (Mg)‐based composites are regarded as promising lightweight materials with significant potential for structural applications. The structure–property relationships of bionic Mg‐based composites remain unclear. Herein, three honeycomb‐like Mg‐Fe composites are fabricated to uncover the underlying strengthening mechanisms.
Fan Zhang, Hui Fu, Jiahan Liu, Yudong Chen, Qiuming Peng, Tao Zhang   +5 more
wiley   +1 more source

Polarization Loss Enhancement Induced by Interfacial Contact Regulation Strategy to Develop Nickel Silicate/Reduced Graphene Oxide for Microwave Absorption and Corrosion Resistance

Rare Metals, Volume 45, Issue 5, May 2026.
ABSTRACT Interface polarization enhancement and impedance matching optimization are the keys to improving the comprehensive performance of microwave absorbing materials (MAMs). Herein, a green synthesis strategy integrating sacrificial template self‐etching, hydrothermal reaction, and annealing treatment is proposed to successfully fabricate urchin ...
Zhenzhen Tian, Tianming Jia, Xucai Kan, Beibei Zhan, Junfei Ding, Yunpeng Qu, Xiu Gong, Yanli Chen, Xiaosi Qi   +8 more
wiley   +1 more source

Synergistic Electron Density and Oxygen Defect Regulation in Fluorite High‐Entropy Oxides for Superior Ionizing Radiation Shielding

Rare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Lightweight and lead‐free radiation shielding materials remain urgently needed. This work designed a fluorite high‐entropy oxide (FHEO) system through a combined computational–experimental route. Density functional theory based on special quasi‐random structures was used to identify thermodynamically stable fluorites from a wide compositional ...
Xiangjie Duan, Jie Zhao, Zhipeng Li, Shuaida Song, Na Zhou, Xingyi He, Jizhuang Fan, Ping Xu, Bo Tian, Yunchen Du   +9 more
wiley   +1 more source

Life Stage‐Specific Genetic Diversity and Landscape Characteristics Collectively Influence Genetic Recovery in Pometia pinnata Population 生活史阶段特异的遗传多样性与景观特征对番龙眼种群遗传恢复的协同影响

Integrative Conservation, Volume 5, Issue 1, Page 137-149, March 2026.
Pometia pinnata demonstrated life‐stage‐specific genetic responses to landscape features, with asymmetric gene flow patterns and population recovery following historical bottlenecks, revealing complex topographic and demographic influences on forest genetic structure.
Madhuparna Chatterjee, Xiao‐Na Shao, Feng Liu, Guang‐Hong Cao, Zheng‐Feng Wang, Lu‐Xiang Lin   +5 more
wiley   +1 more source

Sun Bear Ecology and Conservation: Multiscale Habitat Associations in Southeast Asia 马来熊的生态与保护:东南亚地区的多尺度生境关联研究

Integrative Conservation, Volume 5, Issue 1, Page 125-136, March 2026.
We collated detections of the sun bear from new and previously published camera trap studies across its range. We then analysed these detections at two different spatial scales to assess the habitat associations and diel activity of this species. We found that the sun bear is tolerant to moderate habitat disturbances. ABSTRACT Degraded tropical forests,
Alexander Hendry, Harsh K. Pahuja, Zachary Amir, Ilyas Nursamsi, Jonathan H. Moore, Matthew Scott Luskin   +5 more
wiley   +1 more source

基于颗粒阻尼技术的数控机床轻量化研究 [PDF]

, 2018
随着数控机床向高精度、高速度和绿色化发展,轻量化数控机床的优势越来越明显。以ZN-XK2840数控龙门镗铣床为例,提出一种基于颗粒阻尼技术的数控机床轻量化设计方法。首先通过有限元法对常规数控机床结构的静态性能进行分析,对其壁厚进行优化,对轻量化的机床结构的静态性能进行分析,确保其最大变形量和强度满足使用要求;然后对常规数控机床的动特性如模态特性、谐响应进行分析。颗粒阻尼技术能够在振动传递路径有效降低机床结构振动,通过建立颗粒系统-龙门铣床动力学模型 ...
边贺川, 许展豪, 肖望强
core   +1 more source

A Tale of Two Programs? Stigma and Administrative Burdens in CHIP and Medicaid

World Medical &Health Policy, Volume 18, Issue 1, March 2026.
ABSTRACT One contributing factor to undersubscriptions is administrative burdens. To explore whether program stigma affects attitudes about administrative burdens, a survey (N = 2204) was fielded to assess differences in attitudes about seven policies decreasing administrative burdens and two policies increasing administrative burdens.
Simon F. Haeder
wiley   +1 more source

Mesoporous Hollow Carbon Spheres/Nanofibers Anchored With Conductive Bimetallic for Efficient Microwave Absorption

Rare Metals, Volume 45, Issue 2, February 2026.
ABSTRACT To break electromagnetic wave absorption (EMA) tech's single‐attenuation bottleneck, enhancing multi‐wave absorption synergy in composites is key for microstructure design. This study uses mesoporous hollow carbon spheres to make metal nanospheres with cobalt, iron, and nickel nanoparticles, then encapsulates them via electrospinning into a ...
Wei‐Lian Zhang, Shuang Xu, Xia Li, Ya‐Hui Yin, Cheng‐Long Sun, Zi‐Long Yu, Chun Zhao, Di Lan, Zi‐Rui Jia, Guang‐Lei Wu, Xian‐Zhen Xu   +10 more
wiley   +1 more source

Designing High‐Strength and High‐Ductility Cast Mg–Zn–Al–Mn–Sn Alloys via τ‐Mg32(Al,Zn)49 Phase Tuning and Twin Boundary Toughening Optimisation

Rare Metals, Volume 45, Issue 2, February 2026.
ABSTRACT Achieving a simultaneous enhancement of strength and ductility remains a critical bottleneck for the large‐scale and cost‐effective engineering application of magnesium alloys. In this work, guided by first‐principles calculations, we tailored the τ‐Mg32(Al,Zn)49 phase and optimised twin boundary, thereby designing and successfully ...
Yun‐Xuan Zhou, Wen‐Jun Tian, Hao Lv, Quan Dong, Hong Yang, Pu‐Hua Yu, Jun Tan, Xian‐Hua Chen, Fu‐Sheng Pan   +8 more
wiley   +1 more source