Results 101 to 110 of about 3,197,248 (349)
General analysis of type I second-harmonic generation with elliptical Gaussian beams
, 1997 One can enhance second-harmonic generation in angle-tuned crystals by focusing the fundamental to an elliptical waist in the crystal. We present a general analysis for type I phase-matched uniaxial and biaxial crystals that will find particular ...
Walz, Jochen +4 more
core
The number of individuals alive in a branching process given only times of deaths
The study of many population growth models is complicated by only partial observation of the underlying stochastic process driving the model. For example, in an epidemic outbreak we might know when individuals show symptoms to a disease and are removed ...
Ball, Frank, Neal, Peter
core +1 more source
FEBS Letters, EarlyView.Drosophila park mutants serve as a model for Parkinson's disease. We used this strain to investigate the connection between oxidative stress and the circadian clock mechanism. We showed that increased oxidative stress affects the physiology of pacemaker cells, disrupting their daily structural plasticity. Lack of rhythmic signaling from pacemaker cells
Kamila Zientara +3 more
wiley +1 more source
New results on multivariate phase-type distributions
, 2022 Phase-type distributions are used for mathematical modelling within numerous scientific fields of both engineering and commercial interests, such as genetics, transport optimisation, and insurance mathematics.
Larsen, Nicolai Siim
core
FEBS Letters, EarlyView.Inositol pyrophosphates are energy‐rich signaling molecules that perform critical functions in cells. Three different families of phosphatases hydrolyze the β phosphate of the inositol pyrophosphate molecules: two have narrow specificities and one is promiscuous.
Ronda J. Rolfes
wiley +1 more source
Acetylcholine Mediates Dynamic Switching Between Information Coding Schemes in Neuronal Networks
Frontiers in Systems Neuroscience, 2019 Rate coding and phase coding are the two major coding modes seen in the brain. For these two modes, network dynamics must either have a wide distribution of frequencies for rate coding, or a narrow one to achieve stability in phase dynamics for phase ...
James P. Roach +10 more
doaj +1 more source
On Phase-Type Distribution in Ruin Theory [PDF]
, 2017 The aim of this paper is to serve as an introduction to the use of phase-type distributions and at the same time to outline their use in ruin theory. Phase-type distributions, a particular class of matrix-exponential distributions, have the important ...
M. Pietroluongo
core
Hydrodynamics and mass transfer in bubble column: Influence of liquid phase surface tension [PDF]
, 2007 According to literature, few experiments are performed in organic solvents which are mostly used in commercial gas–liquid reactors. However, it is commonly accepted that data obtained in aqueous solution allow to predict the surface tension effects, and ...
Billet, Anne-Marie +2 more
core +1 more source
Molecular Oncology, EarlyView.Aptamers are used both therapeutically and as targeting agents in cancer treatment. We developed an aptamer‐targeted PLGA–TRAIL nanosystem that exhibited superior therapeutic efficacy in NOD/SCID breast cancer models. This nanosystem represents a novel biotechnological drug candidate for suppressing resistance development in breast cancer.
Gulen Melike Demirbolat +8 more
wiley +1 more source
Phase-Type Distributions and Majorization
The Annals of Applied Probability, 1991 Aldous and Shepp recently proved that the Erlang distribution of a given order is the least variable phase-type distribution of that order, in the sense of minimizing the coefficient of variation. Here we prove that it is also least variable in the sense of majorization.
openaire +2 more sources