Results 21 to 30 of about 39,483 (195)

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

open access: yesRare Metals, Volume 45, Issue 2, February 2026.
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   +9 more
wiley   +1 more source

Composite‐Field Annealing Enables Superior High‐Temperature Noise Stability in Fluxgate Sensors With Co‐Rich Amorphous Microwires

open access: yesRare Metals, Volume 45, Issue 2, February 2026.
ABSTRACT Fluxgate sensors with Co‐rich amorphous microwires, widely used for their low noise in magnetic field measurements, encounter significant challenges in high‐temperature environments such as well drilling and geological exploration. Prolonged thermal aging degrades the performance of Co‐rich amorphous microwires, resulting in increased noise ...
Lining Pan   +10 more
wiley   +1 more source

Comparison of ultrasound with computed tomography and whole‐body diffusion‐weighted MRI in prediction of surgical outcome using ESMO‐ESGO criteria in patients with tubo‐ovarian carcinoma: prospective ISAAC study

open access: yesUltrasound in Obstetrics &Gynecology, Volume 67, Issue 2, Page 207-219, February 2026.
ABSTRACT Objective To test the non‐inferiority of extended abdominopelvic ultrasound examination compared with contrast‐enhanced computed tomography (CT) and whole‐body diffusion‐weighted magnetic resonance imaging (WB‐DWI/MRI) in discriminating preoperatively between resectable and non‐resectable disease based on the European Society for Medical ...
D. Fischerova   +26 more
wiley   +1 more source

关于IPTV业务组播质量劣化问题的研究

open access: yes智能城市应用
IPTV的组播业务是通过利用组播协议的特性,充分利用网络设备对数据的复制转发能力,将用户机顶盒的视频流量下沉到离用户最近的网元。相比传统的RTSP(实时流传输协议)提供客户端到服务端的实时视频传输,组播的部署能够大幅度节省平台建设及网络资源。组播卡顿问题对组播复制点下移工作中,IPTV业务直播卡顿反映较为多,看电视节目有马赛克现象或者屏幕卡顿现象。文章对组播部署过程中卡顿问题进行了分析总结,提供了通用的故障处理的方法。
文杰 张
semanticscholar   +1 more source

Yttrium Addition Co‐Enhances the Plasticity and Corrosion Resistance of TiB2‐Refined Al‐Mg‐Zn Alloys

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT To address the degradation of corrosion resistance induced by Al‐5Ti‐B grain refiner during the strengthening of Al‐Mg‐Zn alloys, this study innovatively employed a rare earth element yttrium (Y) alloying strategy to achieve synergistic enhancement of mechanical strength and corrosion resistance.
Wen‐Tao Qin   +9 more
wiley   +1 more source

Realizing Ultrahigh Dielectric Constant With Ultrawide Temperature Stability in Dual‐Phase BNT‐BST Ceramics by SPS Sintering

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT Ceramic capacitors are critical components in advanced electronic devices, primarily due to their multi‐functionalities in energy/information storage and conversion. However, poor temperature stability remains a long‐standing challenge for practical applications, especially at extremely high‐ or low‐temperature conditions (e.g., > 200°C or ...
Zhi‐Peng Li   +7 more
wiley   +1 more source

Thermohydrogen‐Induced α→β Phase Transition and Interfacial Aggregation: A Diffusion Bonding Mechanism for Ti65 Alloy at Low Temperatures

open access: yesRare Metals, Volume 45, Issue 1, January 2026.
ABSTRACT Diffusion bonding (DB) of near‐α titanium alloys requires high temperatures, which can cause grain coarsening, structural deformations, and degradation of the workpiece's mechanical characteristics. In this study, thermal hydrogen processing (THP) was applied to Ti65, combined with selective magnetron sputtering of a Ti‐Al thin film to promote
Liang‐Wei Kang   +9 more
wiley   +1 more source

氧化锌压敏电阻劣化过程中变温率的研究及应用

open access: yesDianci bileiqi, 2017
针对目前主要通过压敏电压U1mA和漏电流I两个参数来检测氧化锌压敏电阻的劣化程度,然而因为U1mA和I存在"拐点效应",无法及时有效地判断氧化锌压敏电阻的劣化程度。因此研究一种能反映氧化锌压敏电阻劣化程度的方法尤为重要。根据氧化锌压敏电阻的热稳定性和老化机理,提出氧化锌压敏电阻劣化过程中会伴随着温度的变化。通过对氧化锌压敏电阻进行热稳定劣化试验,试验分析发现:氧化锌压敏电阻的变温区域为阀片内部,随着热阻的变化,氧化锌压敏电阻的温度也发生变化。得出变温率可以作为一个考量氧化锌压敏电阻劣化程度的量,同时 ...
张过有
doaj  

岡山大学における核燃料物質の安全管理のための劣化ウランと天然ウランの鑑別について [PDF]

open access: yes, 2008
In Japan, the Law for the Regulation of Nuclear Source Materials, Nuclear Fuel Materials and Reactors (Regulation Law) controls the nuclear fuel materials such as thorium (Th), uranium (U) and plutonium (Pu).
Hanafusa, Tadashi   +6 more
core  

Food security in slow‐onset disasters: A policy review in Southeast Asian regions

open access: yesWorld Medical &Health Policy, Volume 16, Issue 3, Page 353-375, September 2024.
Abstract Slow‐onset disasters, a neglected climatic event, affect the agricultural sector in Southeast Asia and threaten regional food security. Improving food security in slow‐onset disasters requires policy development by both regional and national governments.
Hiep N. Le   +4 more
wiley   +1 more source

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