Results 11 to 20 of about 577 (227)

In-depth experimental search for a coupling between gravity and electromagnetism with steady fields [PDF]

open access: yesScientific Reports
Any means to control gravity like electromagnetism is currently out of reach by many orders of magnitude even under extreme laboratory conditions. Some often poorly executed experiments or pseudoscience theories appear from time to time claiming for ...
M. Tajmar, M. Kößling, O. Neunzig
doaj   +2 more sources

18 GHz electromagnetic field induces permeability of Gram-positive cocci [PDF]

open access: yesScientific Reports, 2015
AbstractThe effect of electromagnetic field (EMF) exposures at the microwave (MW) frequency of 18 GHz, on four cocci, Planococcus maritimus KMM 3738, Staphylococcus aureus CIP 65.8T, S. aureus ATCC 25923 and S. epidermidis ATCC 14990T, was investigated.
Nguyen, The Hong Phong   +6 more
openaire   +3 more sources

Electromagnetic sensor for measuring the dielectric permeability of materials

open access: yesVisnyk of V.N. Karazin Kharkiv National University, series “Radio Physics and Electronics”, 2020
Relevance: Problems of control and determination of electrophysical parameters of materials of different physical nature are relevant in terms of the development of express methods of analysis of substances in various fields of science and technology, in particular, in biotechnology and biomedicine.
openaire   +1 more source

Fast and Accurate Non-Linear Time-Domain Modeling of Synchronous Machines

open access: yesIEEE Access
The paper presents a novel method for non-linear 2D magnetic analyses of synchronous electric machines, with the emphasis on permanent magnet and synchronous reluctance AC machines with distributed windings.
Mario Vukotic   +3 more
doaj   +1 more source

Electromagnetics with time-varied vacuum permittivity and permeability

open access: yes, 2023
Manuscript and Supplemental document, 27 pages, 11 ...
openaire   +2 more sources

Wearable Smart Patches on Sustainable Chitosan With Reversible Microbial Growth‐Inhibitory Properties

open access: yesAdvanced Functional Materials, EarlyView.
ABSTRACT Chitosan, a polysaccharide upcycled from biowaste, has long promised sustainable, biocompatible, and antimicrobial films and devices, an appeal reinforced by its recent regulatory recognition, with several chitosan‐based antibacterial dressings gaining clearance through the Food and Drug Administration's 510(k) pathway.
Jacopo Nicoletti   +16 more
wiley   +1 more source

Gradient‐Conductivity Architecture Enables Synchronous Enhancement of Sensitivity and Detection Range in Multifunctional All‐Paper Sensors

open access: yesAdvanced Functional Materials, EarlyView.
A gradient‐engineered all‐paper sensor is fabricated by integrating MXene and in situ grown AgNPs within hierarchical cellulose networks. The device breaks the sensitivity–detection range trade‐off through cascaded conductive pathways, enabling ultrahigh pressure sensitivity, humidity–pressure decoupled dual‐mode sensing, and outstanding EMI shielding,
Ao Li   +7 more
wiley   +1 more source

Research on the Influence of Asynchronous Coil Launcher (Coil AC Pulse Linear Motor) Shell on the Launch Efficiency

open access: yesHigh Voltage
The effect of a metal shell on the launch efficiency of an asynchronous coil launcher (coil AC pulse linear motor) remains insufficiently understood in terms of the underlying mechanisms and principles. To address this gap, this study conducted extensive
Gongxuan Chen   +5 more
doaj   +1 more source

Rapid Microwave Plasma Engineering of HfO2/C@C Core‐Shell Fibrous Membrane Toward Flexible High‐Performance Electromagnetic Wave Absorption

open access: yesAdvanced Functional Materials, EarlyView.
Rapid microwave plasma torch engineering tunes crystal phases, carbon graphitization and oxygen‐vacancy defects in HfO2/C@C core‐shell fibrous membranes. Synergistic multi‐loss effects optimize impedance matching to deliver −65.75 dB reflection loss and a 7.37 GHz effective bandwidth for flexible electromagnetic wave absorption.
Qichao Ding   +14 more
wiley   +1 more source

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