Results 71 to 80 of about 914 (194)

Reflection characteristics of a composite planar AMC surface

AIP Advances, 2012
This study investigates the reflection characteristics of a composite Artificial Magnetic Conductor (AMC) surface consisting of multiple orthogonal gradient AMC surfaces arranged in a two-dimensional periodic pattern.
Ruey-Bing Hwang, Yueh-Lin Tsai
doaj   +1 more source

Novel Roles for the Ectoenzyme CD38 in the Maintenance of Transcriptional and Metabolic Homeostasis in Astrocytes

Glia, Volume 74, Issue 2, February 2026.
CD38 deficiency influences brain NAD/NAM metabolism. Global CD38 deficiency drives changes in astrocyte mitochondrial, metabolic, senescence, and neurodegenerative‐related genes. CD38 deficiency alters glial reactivity and astrocyte bioenergetics. ABSTRACT CD38 is an ectoenzyme that converts NAD+ to NAM to help maintain bioenergetic homeostasis.
S. Basak, A. M. Colafrancesco, R. D. Hernandez, X. Wei, L. J. McMeekin, D. Dang, M. Simmons, J. L. Browning, K. Noel, F. Zhou, F. E. Lund, J. S. Saad, S. G. Watsen, A. M. Pickrell, R. M. Cowell, M. L. Olsen   +15 more
wiley   +1 more source

Self‐Healing Materials from Electronically Integrated Microscopic Robots

Advanced Intelligent Systems, Volume 8, Issue 1, January 2026.
Submillimeter robots can use electronically controlled electrodeposition to assemble into a material structure. The resulting aggregate possesses ultralow density, high strength‐to‐weight ratio, and can heal from damage. Further afield, these results clear a path to materials that organize or adapt by directing matter and information at the microscale.
Lucas C. Hanson, William H. Reinhardt, Marc Z. Miskin   +2 more
wiley   +1 more source

Miniaturized bendable 400 MHz artificial magnetic conductor

, 2015
International audienceA bendable artificial magnetic conductor (AMC) with a resonant frequency of 400 MHz is proposed. The dimensions of the unit cell are 50 × 50 mm2 or 0.07 × 0.07 λ0. The miniaturization is achieved with closely coupled patches printed
PRESSE, Anthony, Tarot, Anne-Claude
core   +1 more source

KARAKTERISASI DAYA SERAP TUNABLE ABSORBER BERBASIS ARTIFICIAL MAGNETIC CONDUCTOR (AMC) MENGGUNAKAN DIODA VARAKTOR DAN KAPASITOR [PDF]

, 2020
Kemajuan teknologi saat ini berkembang sangat pesat. Terutama pada bidang penyerap gelombang elektromagnetik mikrostrip yang berbasis Artificial Magnetic Conductor (AMC). Teknik yang dilakukan pada perkembangan penyerap gelombang elektomagnetik pada AMC
MUTHIA HANIFAH
core  

Ultra-Wideband Robust RCS Reduction with Triangle-type AMC Structure [PDF]

Radioengineering, 2018
A novel planar artificial magnetic conductor (AMC) structure is presented for ultra-wideband radar cross section reduction (RCSR). The structure consists of three different AMC tiles in a quadruple triangle-type chessboard configuration.
T. Song, L. L. Cong, C. M. Tong
doaj  

Identifying early changes in imaging, plasma, and digital cognitive biomarkers that correspond to Alzheimer's disease pathology in the presence of autopsy‐confirmed co‐pathologies

Alzheimer's &Dementia, Volume 22, Issue 1, January 2026.
Abstract INTRODUCTION Alzheimer's disease (AD) biomarkers are assessed on their ability to detect AD pathophysiology in vivo, with confirmation of AD neuropathology only at autopsy. METHODS Positron emission tomography (PET), plasma, and cognitive AD biomarkers were compared to AD neuropathology in Harvard Aging Brain Study participants (10 cognitively
Charles D. Chen, Cinthya Aguero, Alexandra Melloni, Brian C. Healy, Emma G. Thibault, Jessie Fanglu Fu, Michelle E. Farrell, Stephanie Schultz, Hyun‐Sik Yang, Jean‐Pierre Bellier, Jasmeer Chhatwal, Pia Kivisäkk Webb, Steven Arnold, Dana Penney, Randall Davis, Dorene Rentz, Teresa Gomez‐Isla, Reisa A. Sperling, Keith A. Johnson, Julie C. Price   +19 more
wiley   +1 more source

Antenna performance enhancement with Artificial Magnetic Conductor(AMC)

, 2016
Artificial Magnetic Conductor (AMC) is a metamaterial which is widely used nowadays in antenna designs. AMC mimics the behavior of Perfect Magnetic Conductor (PMC) which is not available in nature.
Dewan, R., Rahim, M. K. A.
core  

Ultra-wideband antenna with tunable artificial magnetic conductor

, 2014
This paper presents a tunable Artificial Magnetic Conductor (AMC) unit cell design by means of four copper strips. With the inclusion of copper strips, the initial reflection phase of dual band AMC changes from 2.45 GHz and 5.8 GHz to single frequency of
Dewan, R., Yusoff, M. F. M., Hamid, M. R., M. R. Hamid, M. F. M. Yusoff, M. K. A. Rahim, R. Dewan, H. A. Majid, Rahim, M. K. A., Majid, H. A.   +9 more
core   +1 more source

Integrated Self‐Resonating Microwave Source With Concurrent Dual‐Band and Polarisation Reconfigurability

Electronics Letters, Volume 62, Issue 1, January/December 2026.
This letter presents a compact integrated self‐resonating microwave source capable of simultaneous dual‐band operation and polarization reconfiguration. The reconfigurable pulse‐triggered network charges the antenna to a high DC potential and then triggers the accumulated charges to oscillate, therefore directly converting DC energy into concurrent ...
Manman Cui, Huai‐Tian Zhou, Jun‐Hao Lai   +2 more
wiley   +1 more source