Results 31 to 40 of about 1,139,267 (146)
有理数域Q的全实扩张的虚二次扩域称之为CM域.本文证明了:若K为Q的有限次代数扩张,并有α∈K使α实数域R,且对K中任何单位η,均有η=ζη.其中ζ为K中单位根,η表示η的复共轭,则K为CM域.并由此指出“M.-H.Le,Anoteonperfectpowersoftheformxm-1+…+x+1,ActaArith.,69,1(1995),91-98 ...
袁平之
doaj
Engineering Photothermal Nanoplatforms for Multimodal Theranostics and Biosensing
ABSTRACT Photothermal platforms bridge materials science and biomedicine, emerging as a transformative frontier in biomedical applications. They offer spatiotemporally precise, noninvasive modalities with cell‐type‐independent efficacy for treating a range of diseases.
Xiao Han +3 more
wiley +1 more source
ABSTRACT Wearable sweat sensors face persistent trade‐offs between multiplexed detection, signal stability, and wearing comfort. Here, we present a Janus electronic skin (e‐skin) with dual‐mode functionality, offering both thermal and moisture comfort.
Zhi‐Mei Mu +12 more
wiley +1 more source
本实用新型涉及飞行器发动机流量调节和控制领域,提供一种喉道面积可调的临界文氏管,实现了飞行器发动机所需气体流量的调节和控制,具有精度高、调节速度快、成本低和避免重复工作等优点,包括呈L形的限位座,所述限位座的水平段的末端上侧一体成型有安装台阶,且安装台阶上固定有阀体,阀体的内部设有扩散腔,阀体的上端设有贯通扩散腔的入口接头,且阀体背离限位座竖直段的一侧设有贯通扩散腔的文氏管;限位座竖直段的外壁上安装有直线步进电机,且直线步进电机的输出端贯穿限位座的竖向一段并通过转接头连接有调节顶针 ...
程迪 +6 more
core
基于后退欧拉法和变分原理推导了非线性的时域有限元电场计算方程。利用时域有限元方法分析了含不同应力控制管时的电缆终端电场分布。分析结果表明,采用由电容性和非线性电阻性材料复合绝缘结构的应力控制管时,电缆终端的电场分布最为均匀。
宫瑞磊 +4 more
doaj
ABSTRACT Aqueous Zn‐ion batteries (AZIBs) are expected to become one of the most promising candidates for large‐scale energy storage, but are impeded by uncontrollable dendrite growth and parasitic reactions. In this study, we propose a simple mechanical shot‐peening (SP) approach for restructuring commercial Zn foils into highly exposed (002)‐textured
Xu Ma +7 more
wiley +1 more source
ABSTRACT The use of Ti6Al4V alloy in dental implantation is constrained by its high elastic modulus and biological inertness, which lead to delayed osseointegration and a high failure risk. Additionally, its chemical incompatibility with hydroxyapatite (HA) impedes the development of stable bioactive composites.
Shangyong Zuo +8 more
wiley +1 more source
设F=Fq是一个q元有限域,q=qf,f≥1,p是一个奇素数.作者仅用组合方法并结合特征和的一些结果,非常简洁地给出了有限域F=Fq上一类方程:xdn11a1xd11+…+an1+1xdn1+1,1+…+an11…xd1n1n11…xdn1+1n2n21…xdn1n1n1xdns1xdn21=b+…+ans+an2+1xdn2+1,1+an11…xdn2n2n21…xdn1+1n3n31…xdnsnsns当指数满足一定条件时在Fns上解数的一个直接公式,这里dij>0,ai∈F b∈F ...
王文松, 孙琦
doaj
Bidirectional Interfacial Chemical Regulation Enables Durable Aqueous Zn‐I2 Batteries
ABSTRACT Aqueous Zn‐I2 batteries hold great promise for large‐scale energy storage, yet their practical deployment is hindered by coupled interfacial instabilities at both electrodes, where Zn‐anode parasitic reactions and cathodic polyiodide shuttle mutually aggravate each other.
Zimian Jia +8 more
wiley +1 more source

