Results 281 to 290 of about 7,611,389 (379)

Research on Reform in Mathematics Education, 1993-2000 [PDF]

open access: green, 2002
John A. Ross   +2 more
openalex   +1 more source

Switchable Bidirectional Sound Absorption Via Exceptional Point Modulation in Acoustic Metastructures with Interleaved Resonator Coupling

open access: yesAdvanced Science, EarlyView.
A switchable bidirectional acoustic metastructure is proposed, enabling broadband and frequency‐selective absorption via interleaved resonator coupling and exceptional point modulation. It outperforms traditional unidirectional designs, offering compact, efficient sound control from both directions and establishing a generalized framework for extending
Zichao Guo   +7 more
wiley   +1 more source

Highly Efficient Air Sterilization via Low‐Temperature Interfacial Evaporation in Inductively Heated Superhydrophilic Ferromagnetic Filters

open access: yesAdvanced Science, EarlyView.
The first low‐temperature interfacial evaporation air sterilization technology is presented. It is based on a superhydrophilic ferromagnetic micro/nano‐structured stainless‐steel filter, showing ultra‐efficient inductive heating. This technology has demonstrated over 99.6% of SARS‐CoV‐2 and RSV elimination at temperatures in the 60–80 °C range.
Arnau Fons   +15 more
wiley   +1 more source

Suppressing the Electron–Phonon Coupling in 2D Perovskite Cs3Sb2I9 for Lead‐Free Indoor Photovoltaics

open access: yesAdvanced Science, EarlyView.
The study has developed an in situ anion‐exchange strategy to fabricate Pb‐free Sb‐based perovskite‐inspired materials (Sb‐PIMs) and solar cells, achieving a record indoor efficiency of 8.2% and a 3.4% power conversion efficiency under 1 sun illumination.
Yixin Guo   +6 more
wiley   +1 more source

Home - About - Disclaimer - Privacy