Results 21 to 30 of about 1,584,092 (142)
International Journal of Applied Linguistics, EarlyView.ABSTRACT Self‐directed Learning (SDL) is an important skill for learners of all ages and phases of life. Generative AI facilitates self‐directed second language (L2) learning by providing interactive, personalised access to online resources. However, existing research on AI‐assisted self‐directed L2 learning focuses on adult learners in higher ...
Qing Ma +4 more
wiley +1 more source
Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT With the rapid development of flexible electronics, there is an increasing demand for hydrogel‐based sensors with rapid fabrication, robust mechanical performance, and stable sensing behavior. Herein, a green and ultrafast self‐catalytic strategy is developed to fabricate a multifunctional hydrogel based on tannic acid‐coated cellulose ...
Jin Qian +6 more
wiley +1 more source
, 2016 本发明提供一种多束光合成聚焦装置，包括聚焦组件和至少一多束光合成组件；多束光合成组件用于将多束不同方向入射光进行合成；包括至少两激光器、与激光器数量等同的光纤及准直器和一偏转总成；每根光纤均与一激光器连接，每个准直器均与一光纤连接；偏转总成包括至少一用于改变经由准直器出射的光束方向的反射镜；聚焦组件用于将平行光束进行汇聚；包括镜架和设在镜架内的聚焦透镜。本发明能将多束不同方向的光合成为夹角在0～30度之间的多束平行光，最终经一聚焦透镜后汇聚，可在辊面上同时或分时产生微坑组，增加单位时间内的毛化区域 ...
杨兵 +5 more
core +2 more sources
Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT Traditional electromagnetic shielding materials mainly focus on attenuating electromagnetic interference (EMI), but they still fail to meet the growing demands of modern flexible electronic devices and Internet‐related information technologies.
Zhi Lei +6 more
wiley +1 more source
Gaoya dianqi, 2016 检测变压器绝缘纸聚合度是判断其固体绝缘老化程度最直接有效的方法,实验室制取了53个不同聚合度的变压器绝缘纸样,采用国标法（粘度法）检测其聚合度。通过漫反射光谱仪对所有纸样进行扫描,结合偏最小二乘回归法建立了绝缘纸聚合度与光谱参数间的定量模型,模型相关系数为0.951 9,预测均方根误差RMSEP为67.5。该方法检测绝缘纸聚合度的精密度和准确度基本满足工程应用要求,为变压器固体绝缘状态提供了一种快捷、无损的检测方式。
蔡德华 +3 more
doaj
Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT Lignin hydrogenolysis is a promising route to separable aromatic monomers, yet practical upgrading is still hindered by macromolecular mass‐transfer limitations and the aggregation/deactivation of metal sites. Herein, we propose a “dual‐confinement” strategy to construct ultrafine Ru nanoclusters supported on lignin‐based N‐doped hierarchical ...
Tianjin Li +11 more
wiley +1 more source
Gongye shui chuli, 2008 不同聚合度的聚乙二醇单甲醚丙烯酸酯分别与丙烯酸(AA)在水溶液中聚合,得到两种聚醚型共聚物阻垢剂T-400和T-1000。考察了阻垢剂用量、钙离子浓度、溶液pH,以及温度、时间对其阻磷酸钙垢率的影响,并与其他阻垢剂进行了比较。结果表明,聚醚型阻垢剂具有优异的阻磷酸钙垢的性能,对钙离子容忍度较高,受温度影响较小,可用于高pH的水系统中,并长时间有效;聚醚侧基的聚合度大小对其阻磷酸钙垢性能影响不大。
孙绪兵, 罗玉梅, 梁兵
doaj +2 more sources
Hybrid Flexible–Soft Neural Interface as a Practical Solution for Long‐Term Implants
Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT Implantable neural interfaces face persistent challenges in long‐term functionality due to chronic immune responses, mechanical mismatch with tissue, and material corrosion in vivo. The commonly used flexible materials, such as polyimide and parylene‐C (poly[monochloro‐p‐xylylene]), have advantages in low water vapor permeability and high ...
Bowen Ji +13 more
wiley +1 more source
化整为零:聚合物/粘土纳米复合材料的微观结构和阻隔性能 [PDF]
, 2006 在聚合物基体中掺入少量的层状硅酸盐所制备的聚合物/粘土纳米复合材料,其阻隔性能明显地优于纯聚合物及其传统的复合材料.实验及分析结果表明,聚合物/粘土纳米复合材料的微观结构和阻隔性能主要受控于粘土剥离后的径厚比.一简单的重整化群模型被用来评估粘土几何因素(诸如径厚比、取向、剥离程度等)对聚合物/粘土纳米复合材料阻隔性能的影响 ...
米耀荣, 卢春生
core +2 more sources
Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT The regeneration of osteoporotic bone defects is severely hampered by compromised endogenous healing capacity, demanding advanced strategies that actively orchestrate pro‐osteogenic microenvironments. Here, we report an integrated, self‐powered osteo‐regenerative system that uniquely leverages a dual ultrasound‐responsive piezoelectric ...
Bing Tan +6 more
wiley +1 more source