Results 51 to 60 of about 629,686 (290)
Phase-lock loop frequency control and the dropout problem [PDF]
, 1968 Technique automatically sets the frequency of narrow band phase-lock loops within automatic lock-in-range. It presets a phase-lock loop to a desired center frequency with a closed loop electronic frequency discriminator and holds the phase-lock loop to ...
Attwood, S., Kline, A. J.
core +1 more source
Effects of order parameter self-consistency in a $s_\pm$-s junction
, 2016 The properties of Josephson tunneling between a single band s-wave superconductor and a two band $s_\pm$ superconductor are studied, in relation to recent experiments involving iron-based superconductors.
Berg, Erez +2 more
core +1 more source
Two-dimensional higher-order topology in monolayer graphdiyne
, 2020 Based on first-principles calculations and tight-binding model analysis, we propose monolayer graphdiyne as a candidate material for a two-dimensional higher-order topological insulator protected by inversion symmetry.
Ahn, Junyeong +3 more
core +1 more source
Spur-reduction techniques for PLLs using sub-sampling phase detection [PDF]
, 2010 A low-spur sub-sampling PLL exploits an amplitude-controlled charge pump which is immune to current source mismatch. A DLL/PLL dual-loop architecture and buffering reduces the disturbance of the sampler to the VCO. The 2.2GHz PLL in 0.18-μm CMOS achieves
Bohsali, Mounhir +4 more
core +3 more sources
Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing
FEBS Letters, EarlyView.Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley +1 more source
Research on clinical application of two different eruption blocking appliances
口腔疾病防治, 2016 Objective To observe the clinical efficacy in patients treated with two different eruption blocking appliances.Methods Totally 40 children (21 boys, 19 girls), aged 6.5-8.5 years old, having premature eruption of permanent tooth were randomly divided ...
CHENG Min +4 more
doaj +1 more source
Quasiparticle states of the Hubbard model near the Fermi level
, 2006 The spectra of the t-U and t-t'-U Hubbard models are investigated in the one-loop approximation for different values of the electron filling. It is shown that the four-band structure which is inherent in the case of half-filling and low temperatures ...
A. A. Abrikosov +10 more
core +1 more source
Time after time – circadian clocks through the lens of oscillator theory
FEBS Letters, EarlyView.Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo +2 more
wiley +1 more source
Dual-Band MIMO Antenna for 5G/WLAN Mobile Terminals
Micromachines, 2021 This paper presents a dual-band four-element multiple-input-multiple-output (MIMO) array for the fifth generation (5G) mobile communication. The proposed antenna is composed of an open-loop ring resonator feeding element and a T-shaped radiating element.
Jianlin Huang +5 more
doaj +1 more source
Dynamical screening in bilayer graphene
, 2011 We calculate 1-loop polarization in bilayer graphene in the 4-band approximation for arbitrary values of frequency, momentum and doping. At low and high energy our result reduces to the polarization functions calculated in the 2-band approximation and in
Gamayun, O. V.
core +1 more source