Results 61 to 70 of about 484,828 (297)

Electron spin rephasing in $n$-type (001) GaAs quantum wells

, 2012
We investigate the electron spin dephasing in the presence of spin phase recovering by a serried $\pi$-pulse sequence in $n$-type (001) GaAs quantum wells in a wide range of temperature and density regimes.
Shen, K., Wu, M. W.
core   +1 more source

Overview of molecular signatures of senescence and associated resources: pros and cons

FEBS Open Bio, EarlyView.
Cells can enter a stress response state termed cellular senescence that is involved in various diseases and aging. Detecting these cells is challenging due to the lack of universal biomarkers. This review presents the current state of senescence identification, from biomarkers to molecular signatures, compares tools and approaches, and highlights ...
Orestis A. Ntintas, Sylvia Vagena, Pavlos Pantelis, Giorgos Theocharous, Russel Petty, Konstantinos Evangelou, Vassilis G. Gorgoulis   +6 more
wiley   +1 more source

Residual Lifetime Prediction for Multi-State System Using Control Charts to Monitor Affecting Noise Factor on Deterioration Process

Journal of Applied Research on Industrial Engineering, 2018
In this research, multi-state complex systems are analyzed in order to measure reliability and predict residual of systems’ lifetime under the effect of an out of control noise factor.
Neda Gol-Ahmadi, Sadigh Raissi
doaj   +1 more source

Survival law in a potential model

, 2004
The radial equation of a simple potential model has long been known to yield an exponential decay law in lowest order (Breit-Wigner) approximation. We demonstrate that if the calculation is extended to fourth order the decay law exhibits the quantum Zeno
A. Beskow, A. M. Lane, C. Cohen-Tannoudji, C. N. Friedman, I. I. Gol’dman, L. A. Khalfin, P. Facchi, Pietro P. Rotelli, R. J. Cook, S. R. Wilkinson, Stefano De Leo, V. S. Olkhovsky, V. S. Olkhovsky   +12 more
core   +2 more sources

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Theoretical Notions with Practical Applications Regarding the Statistical Calculation of Dental Bur Wear

Applied Sciences
This paper presents theoretical notions with practical applications for establishing the lifetime of a dental bur (durability and reliability) based on the wear of the active part and considering a series of statistical indicators.
Filip Ilie
doaj   +1 more source

Heavy quark expansion for heavy hadron lifetimes: completing the 1 / m b 3 $$ 1/{m}_b^3 $$ corrections

Journal of High Energy Physics, 2020
We complete the calculation of the contributions from the dimension six operators in the heavy quark expansion for the total lifetime of heavy hadrons. We give the leading order expressions for the Wilson coefficients of the Darwin term ρ D and the spin ...
Th. Mannel, D. Moreno, A. A. Pivovarov
doaj   +1 more source

The role of lipid metabolism in neuronal senescence

FEBS Open Bio, EarlyView.
Disrupted lipid metabolism, through alterations in lipid species or lipid droplet accumulation, can drive neuronal senescence. However, lipid dyshomeostasis can also occur alongside neuronal senescence, further amplifying tissue damage. Delineating how lipid‐induced senescence emerges in neurons and glial cells, and how it contributes to ageing and ...
Dikaia Tsagkari, Eleftheria Panagiotidou, Nektarios Tavernarakis   +2 more
wiley   +1 more source

CALCULATION OF RESIDUAL LIFETIME FOR LIFTING INSTALATION – GANTRY CRANE MPT 20/5 [PDF]

Fiabilitate şi Durabilitate, 2013
In this paper is presented step-by-step the calculus made in order to establishing the residuallifetime of a lifting crane using also non-destructive methods to establish the actual state of machine andareas subject to study, conducting to an extension ...
Cătălin IANCU, Florin VÎLCEANU
doaj  

Electromagnetic Cascade in the Early Universe and its Application to the Big-Bang Nucleosynthesis

, 1994
We investigate the electromagnetic cascade initiated by injection of very high energy photons in the early Universe and calculate the cascade spectrum by solving a set of Boltzmann equations numerically.
Kawasaki, M., Moroi, T.
core   +1 more source