Results 51 to 60 of about 248,313 (294)
Health Promotion & Physical Activity, 2020 Introduction: Aging facial skin is a natural and unavoidable process. It involves a gradual weakening of the biological activity of cells, extension of regenerative processes and reduction of adaptability.
Monika Wilk +3 more
doaj +1 more source
, 2017 We report on a time-domain study of parametric synchronization in a magnetic tunnel junction based spin torque nano-oscillator (STNO). Time-domain measurements of the instantaneous frequency ($f_{i}$) of a parametrically synchronized STNO show random ...
Dürrenfeld, Philipp +4 more
core +1 more source
Advanced Functional Materials, EarlyView.Cu‐based catalysts as a cornerstone in advancing sustainable energy technologies are fully reviewed in this manuscript, highlighting their potential in photo‐ and electrocatalysis. It includes metallic copper, copper oxides, copper sulfides, copper halide perovskites, copper‐based metal–organic frameworks (MOFs), and covalent organic frameworks (COFs),
Jéssica C. de Almeida +16 more
wiley +1 more source
HRO-OFDM Scheme Design and Optimization for a Hybrid RF/VLC Baseband System
IEEE Photonics Journal, 2017 A hybrid radio frequency (RF) and visible light communication (VLC) system can provide better data rate performance and user experience, and only the hybrid RF/VLC systems that use independent RF access points (APs) and VLC APs have been currently ...
Fangzhou Wu, Li Chen, Weidong Wang
doaj +1 more source
Spin torque resonant vortex core expulsion for an efficient radio-frequency detection scheme [PDF]
, 2015 Spin-polarised radio-frequency currents, whose frequency is equal to that of the gyrotropic mode, will cause an excitation of the core of a magnetic vortex confined in a magnetic tunnel junction.
A Chanthbouala +40 more
core +2 more sources
Design of Pedometer with Radio Frequency (RF)
Journal of Agricultural Faculty of Gaziosmanpasa University, 2017 Süt sığırı yetiştiriciliğinde verimlilik ve ekonomik durumu etkileyen başlıca faktör üreme performansıdır. Üreme performansına etkili en önemli faktör ise kızgınlığın doğru olarak belirlenmesidir. Kızgınlığın zamanında belirlenememesi tohumlamanın gecikmesine, gebelik oranının düşmesine ve doğum aralığının uzamasına yol açmaktadır.
ÖZGÜVEN, Mehmet Metin, TAN, Mustafa
openaire +3 more sources
Advanced Functional Materials, EarlyView.Electric control of magnetic tunnel junctions offers a path to drastically reduce the energy requirements of the device. Electric field control of magnetization can be realized in a multitude of ways. These mechanisms can be integrated into existing spintronic devices to further reduce the operational energy.
Will Echtenkamp +7 more
wiley +1 more source
Variational Mode Decomposition-Based Radio Frequency Fingerprinting of Bluetooth Devices
IEEE Access, 2019 Radio frequency fingerprinting (RFF) is based on identification of unique features of RF transient signals emitted by radio devices. RF transient signals of radio devices are short in duration, non-stationary and nonlinear time series.
Alghannai Aghnaiya +2 more
doaj +1 more source
Antimultipath communication by injecting tone into null in signal spectrum [PDF]
, 1987 A transmitter for digital radio communication creates a null by balanced encoding of data modulated on an RF carrier, and inserts a calibration tone within the null. This is accomplished by having the calibration tone coincide in phase and frequency with
Davarian, Faramaz
core +1 more source
Transport of charged particles by adjusting rf voltage amplitudes
, 2011 We propose a planar architecture for scalable quantum information processing (QIP) that includes X-junctions through which particles can move without micromotion.
A. Kehlberger +29 more
core +1 more source