Results 11 to 20 of about 4,341 (167)
Rare Metals, EarlyView.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
, 2018 采用人工紫外光老化和自然老化2种方法对天然橡胶(NR)进行老化研究,利用傅里叶变换红外光谱、核磁共振波谱及紫外-可见光吸收光谱测试法对老化产物进行表征,探究了NR的老化机理。结果表明,天然橡胶抗紫外光老化能力较差,在紫外光下照射3 h,其分子结构即发生明显改变,而在自然老化的条件下,天然橡胶经过30 d结构才发生变化。天然橡胶的老化机理:双键α-H最先被活化,随后发生氧化生成醛酮等氧化产物,同时双键被加成,烯氢含量减少;老化过程中,氧化降解与交联反应同时存在,老化前期以降解为主,后期产生交联 ...
丁玲 +6 more
core +1 more source
Rare Metals, EarlyView.ABSTRACT The limited osteogenic capacity of magnesium phosphate cement (MPC) has constrained its biomedical applications, underscoring the necessity to develop MPC with enhanced physical properties and bone‐forming capabilities. In this study, a multifunctional MPC system was developed by incorporating zoledronic acid‐loaded near‐infrared (NIR ...
Bin Wang +8 more
wiley +1 more source
パンの硬化を低減する小麦粉の開発に向けたGBSS IとSS IIaの二重部分欠失コムギの品質特性に関する研究 [PDF]
, 2021 筑波大学University of Tsukuba博士（農学）Doctor of Philosophy in Agricultural Science2021この博士論文は内容の要約のみの公開（または一部非公開）になっていますdoctoral ...
Inokuma, Takayuki +2 more
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Effects of Ultrafine Grinding Pretreatment on Physicochemical Properties of Alkali- and Water-Extracted Wheat Bran Polysaccharides [PDF]
, 2023 To utilize wheat bran by-products in high value, wheat bran raw materials were pretreated with ultrafine grinding (for 0, 10, 20, and 30 min) and wheat bran polysaccharide was obtained by water extraction and alkali extraction.
Chao LI +8 more
core +1 more source
Functional Ecology, EarlyView.Read the free Plain Language Summary for this article on the Journal blog. Abstract Plant phenology is crucial for understanding plant growth and climate feedback. It affects canopy structure, surface albedo, and carbon and water fluxes. While the influence of environmental factors on phenology is well‐documented, the role of plant intrinsic factors ...
Yunpeng Luo +8 more
wiley +1 more source
International Journal of Applied Linguistics, EarlyView.ABSTRACT This study conducted linguistic analyses of the written corrective feedback (WCF) for Chinese as a second language (CSL) provided by chat generative pre‐trained transformer (ChatGPT) and human teachers (including preservice teachers and senior teachers).
Ling Zhang +2 more
wiley +1 more source
Zhongshan Daxue xuebao. Yixue kexue ban, 2022 随着婚育年龄推迟，大龄夫妇生育需求逐渐增加，生殖衰老成为社会发展面临的重要公共卫生问题。研究表明40~55岁可能为男性生育力的“分水岭”。然而，相比女性生殖衰老，男性生殖衰老特征缺乏鲜明特征，对机体的复杂影响表现为多方面。本篇综述中，我们从男性生殖内分泌、生殖腺，以及生殖附属性腺的衰老性变化角度，阐述对男性生殖衰老特征的认识。
李湘平, 邓春华
doaj
Research on properties of PAD [PDF]
, 2016 随着LED亮度的不断提升和制程的不断优化，相同光效下芯片的尺寸越缩越小，芯片制造成本也不断降低，市场占有率不断扩大。因此，对于芯片可靠性的研究及不断改善逐渐成为了LED应用所面临的难点之一，尤其缺乏芯片长期老化失效的分析以及对芯片严苛使用环境下的失效模式的分析。 本论文通过GaN基LEDs芯片端金属电极（PAD）性能的研究，分析并改善了芯片端长期老化以及在严苛工作环境下的老化可靠性。同时，在此基础上设计了新的PAD降成本结构，降低了PAD端贵金属的耗量。本文的主要结论如下： （1）对于R-PAD结构 ...
王锋
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