Results 11 to 20 of about 7,630 (187)

Caracterização do regime transiente em EDFAs [PDF]

open access: yes, 2011
Mestrado em Engenharia FísicaO presente trabalho propõe-se a relatar o desenvolvimento de duas interfaces gráficas para a simulação dos modelos estacionário e dinâmico de um amplificador de fibra dopada com érbio (EDFA), bem como a caracterização ...
Almeida, Telmo David Pelicano
core   +2 more sources

Transient regime of Kerr-frequency-comb formation [PDF]

open access: yesPhysical Review A, 2012
Temporal growth of an optical Kerr frequency comb generated in a microresonator is studied both experimentally and numerically. We find that the comb emerges from vacuum fluctuations of the electromagnetic field on timescales significantly exceeding the ringdown time of the resonator modes.
Savchenkov, Anatoliy A.   +5 more
openaire   +2 more sources

Coherence enhanced transient lasing in XUV regime [PDF]

open access: yesLaser Physics Letters, 2012
8 pages, 11 ...
Jha, Pankaj K.   +2 more
openaire   +2 more sources

Nonlinear vibration phenomena in hydrodynamically supported rotor systems

open access: yesGAMM-Mitteilungen, Volume 46, Issue 1, March 2023., 2023
Abstract It is a well‐known fact, that hydrodynamically supported systems are prone to nonlinear vibrations. Their exact simulative prediction with respect to frequency and amplitude is complicated by the fact that different system properties interact.
Steffen Nitzschke   +2 more
wiley   +1 more source

Transient regimes and crossover for epitaxial surfaces [PDF]

open access: yesPhysical Review E, 2010
We apply a formalism for deriving stochastic continuum equations associated with lattice models to obtain equations governing the transient regimes of epitaxial growth for various experimental scenarios and growth conditions. The first step of our methodology is the systematic transformation of the lattice model into a regularized stochastic equation ...
Haselwandter, Christoph A.   +1 more
openaire   +3 more sources

Genetic disorders of thyroid development, hormone biosynthesis and signalling

open access: yesClinical Endocrinology, Volume 97, Issue 4, Page 502-514, October 2022., 2022
Abstract Development and differentiation of the thyroid gland is directed by expression of specific transcription factors in the thyroid follicular cell which mediates hormone biosynthesis. Membrane transporters are rate‐limiting for cellular entry of thyroid hormones (TH) (T4 and T3) into some tissues, with selenocysteine‐containing, deiodinase ...
Carla Moran   +5 more
wiley   +1 more source

Direct regulation of shikimate, early phenylpropanoid, and stilbenoid pathways by Subgroup 2 R2R3‐MYBs in grapevine

open access: yesThe Plant Journal, Volume 110, Issue 2, Page 529-547, April 2022., 2022
Significance Statement Subgroup 2 R2R3 MYBs have been shown to upregulate stilbene synthase expression in grapevine; however, their broader roles in the regulation of secondary metabolism remained unclear. Combining whole genome gene co‐expression networks, cistrome data for MYB13/14/15, and MYB15 overexpression we identified new regulatory targets ...
Luis Orduña   +16 more
wiley   +1 more source

Fluoreszenz‐detektierte Pump‐Probe‐Spektroskopie

open access: yesAngewandte Chemie, Volume 133, Issue 34, Page 19015-19024, August 16, 2021., 2021
Eine ultraschnelle Pump‐Probe‐Spektroskopie mit Fluoreszenzdetektion wurde entwickelt. Durch die Kombination von empfindlicher Fluoreszenzdetektion mit ultraschneller pulsbegrenzter Zeitauflösung bietet dieser Ansatz eine komplementäre Technik zum Standard der transienten Absorption.
Pavel Malý, Tobias Brixner
wiley   +1 more source

Aufdeckung der Rolle von Hydrogencarbonat‐Ionen bei der Bildung von Calciumcarbonat im nahezu neutralen pH‐Bereich

open access: yesAngewandte Chemie, Volume 133, Issue 30, Page 16843-16850, July 19, 2021., 2021
Hydogencarbonat‐Ionen spielen eine wichtige Rolle bei der Calciumcarbonatbildung im nahezu neutralen pH‐Bereich. Ihr struktureller Einbau in amorphe Zwischenstufen kann auf Basis eines Modells, in dem Hydrogencarbonat‐Ionen an Pränukleationscluster binden, quantitativ erklärt werden. Die Entdeckung könnte für ein verbessertes Verständnis z. B.
Yu‐Chieh Huang   +9 more
wiley   +1 more source

Übergangsmetallkomplexe als Katalysatoren für die elektrische Umwandlung von CO2 – eine metallorganische Perspektive

open access: yesAngewandte Chemie, Volume 133, Issue 21, Page 11732-11792, May 17, 2021., 2021
Dieser Aufsatz illustriert und kategorisiert die gegenwärtig favorisierten molekularen Mechanismen für die elektrochemisch induzierten, durch homogene Übergangsmetallkomplexe geförderten Umwandlungspfade von CO2. Die daraus resultierenden Einblicke werden mit den Konzepten und Elementarschritten der metallorganischen Katalyse untermauert, um Strategien
Niklas W. Kinzel   +2 more
wiley   +1 more source

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