Results 41 to 50 of about 11,589,324 (344)

Non-perturbative terahertz high-harmonic generation in the three-dimensional Dirac semimetal Cd3As2 [PDF]

Nature Communications, 2019
Harmonic generation is a general characteristic of driven nonlinear systems, and serves as an efficient tool for investigating the fundamental principles that govern the ultrafast nonlinear dynamics.
S. Kovalev, Renato M. A. Dantas, S. Germanskiy, J. Deinert, B. Green, I. Ilyakov, N. Awari, Min Chen, M. Bawatna, Jiwei Ling, F. Xiu, P. V. van Loosdrecht, Piotr Surówka, T. Oka, Zhe Wang   +14 more
semanticscholar   +1 more source

Predicting the Future Burden of Renal Replacement Therapy in Türkiye Using National Registry Data and Comparative Modeling Approaches

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Chronic kidney disease is a growing public health problem worldwide, and the number of patients requiring renal replacement therapy is steadily increasing. Türkiye has experienced a similar rise in both the incidence and prevalence of renal replacement therapy over the past decades; however, national‐level projections of future ...
Arzu Akgül, Neriman Sıla Koç, Berrak Itır Aylı   +2 more
wiley   +1 more source

Spin Heat Engine Coupled to a Harmonic-Oscillator Flywheel. [PDF]

Physical Review Letters, 2018
We realize a heat engine using a single-electron spin as a working medium. The spin pertains to the valence electron of a trapped ^{40}Ca^{+} ion, and heat reservoirs are emulated by controlling the spin polarization via optical pumping.
D. Lindenfels, Oliver Grab, C. Schmiegelow, V. Kaushal, J. Schulz, Ferdinand Schmidt-Kaler, U. Poschinger   +6 more
semanticscholar   +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, Carolin Ector, Hanspeter Herzel   +2 more
wiley   +1 more source

Some Properties and Graphical Applications of a New Subclass of Harmonic Functions Defined by a Differential Inequality

Mathematics
This paper establishes new results related to geometric function theory by presenting a new subclass of harmonic functions with complex values within the open unit disk, characterized by a second-order differential inequality.
Sibel Yalçın, Hasan Bayram, Georgia Irina Oros   +2 more
doaj   +1 more source

Zum Verhältnis von Harmonik und Instrumentation ›vor Wagner‹ [PDF]

Zeitschrift der Gesellschaft für Musiktheorie, 2014
Bereits in Kompositionen aus der Mitte des 18. Jahrhunderts lassen sich Akkorde finden, deren harmonische Funktionen nicht allein durch Merkmale begründet werden, die in den Bereich tonaler Kategorien fallen (wie Akkordtyp, Stufenrelation, Beziehung auf ...
Michael Polth
doaj   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

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, Pedro A. Sánchez‐Murcia, Bernd Nidetzky   +2 more
wiley   +1 more source

DONKIN'S DIFFERENTIAL OPERATORS FOR HOMOGENEOUS HARMONIC FUNCTIONS

St. Petersburg Polytechnical University Journal: Physics and Mathematics, 2019
The work continues the study of Donkin operators for homogeneous harmonic functions. Previously, a basic list of such first-order operators for three-dimensional harmonic functions was obtained.
Berdnikov Alexander, Gall Lidia, Gall Nikolaj, Solovyev Konstantin   +3 more
doaj   +1 more source

The local uniform convergence of positive harmonic function sequence

Tạp chí Khoa học Đại học Huế: Khoa học Tự nhiên, 2023
The Harnack distance on space  and its conformal invariance were constructed and studied by Herron. In this paper, we obtain the Harnack distance on domains  in . Then, we use this concept to investigate some properties of the positive harmonic function
Dang Thinh Do, Le Dieu Linh Tran, Nhat Quy Hoang   +2 more
doaj   +1 more source

Heat and work fluctuations for a harmonic oscillator

, 2012
The formalism of Kundu et al. [J. Stat. Mech. (2011) P03007], for computing the large deviations of heat flow in harmonic systems, is applied to the case of single Brownian particle in a harmonic trap and coupled to two heat baths at different ...
B. Derrida, R. Wong, Sanjib Sabhapandit
core   +2 more sources