Results 41 to 50 of about 11,801 (277)
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
Relaxor-PT Single Crystal Piezoelectric Sensors
Crystals, 2014 Relaxor-PbTiO3 piezoelectric single crystals have been widely used in a broad range of electromechanical devices, including piezoelectric sensors, actuators, and transducers.
Xiaoning Jiang, Jinwook Kim, Kyugrim Kim
doaj +1 more source
Poling effect on distribution of quenched random fields in a uniaxial relaxor ferroelectric
, 2005 The frequency dependence of the dielectric permitivity's maximum has been studied for poled and unpoled doped relaxor strontium barium niobate $Sr_{0.61}Ba_{0.39}Nb_{2}O_{6}:Cr^{3+}$ (SBN-61:Cr). In both cases the maximum found is broad and the frequency
Buse K. +10 more
core +1 more source
Ferroelectric and dielectric characterization studies on relaxor- and ferroelectric-like strontium-barium niobates [PDF]
, 2013 Ferroelectric domain structure evolution induced by an external electric field was investigated by means of nematic liquid crystal (NLC) method in two strontium-barium niobate single crystals of nominal composition: Sr_{0.70}Ba_{0.30}Nb_{2}O_{6} (SBN:70 -
Dec, J. +3 more
core +4 more sources
FEBS Letters, EarlyView.The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li +2 more
wiley +1 more source
Materials Research Express, 2022 The microstructure, dielectric properties, relaxor behavior, and energy storage efficiency of un-substituted and niobium (Nb) substituted (Ba _0.85 Ca _0.15 )(Zr _0.1 Ti _0.9 ) _1-x Nb _x O _3 (for x = 0, 0.02 and 0.05) samples prepared by the solid ...
Vineetha P +4 more
doaj +1 more source
Dipole-glass concept and history-dependent phenomena in relaxors
, 2010 The possibility to explain basic physical properties of relaxors within the concept of the dipole-glass transition is discussed. We argue that this concept provides the only consistent picture accounting of all known anomalous features of relaxors.
Timonin, P. N.
core +1 more source
Anelastic relaxor behavior of Pb(Mg1/3Nb2/3)O3 [PDF]
, 2013 Elastic storage modulus and loss of relaxor lead magnesium niobate ceramics, Pb(Mg1/3Nb2/3)O3, have been measured with dynamic mechanical analyzer in single cantilever mode in the temperature range from 170 K to 320 K and at frequencies from 0.1 Hz to 50
Damjanovic, Dragan, Ursic, Hana
core +2 more sources
Structural insights into an engineered feruloyl esterase with improved MHET degrading properties
FEBS Letters, EarlyView.A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa +5 more
wiley +1 more source
Ferroelectric-to-relaxor crossover in Sb doped PLZT x/52/48 (2 ≤ x ≤ 16) piezoelectric ceramics
Journal of Asian Ceramic Societies, 2014 Dielectric behavior and diffuse phase transition have been investigated in Sb doped lead lanthanum zirconate titanate (PLZT) ceramics to understand the role of La and Sb in ferroelectric-to-relaxor crossover.
Sheng Tong, Zhiyuan Ling
doaj +1 more source