Results 41 to 50 of about 6,005,612 (360)

Exploration of natural red-shifted rhodopsins using a machine learning-based Bayesian experimental design

open access: yesCommunications Biology, 2021
Inoue, Takeuchi and colleagues propose a machine learning-based protocol to screen rhodopsins for their likelihood to be red-shifted. After experimental verification, their tool shows remarkable success at identifying rhodopsins that showed red-shift ...
Keiichi Inoue   +12 more
doaj   +1 more source

A chemical sensor based on a photonic-crystal L3 nanocavity defined in a silicon-nitride membrane [PDF]

open access: yes, 2014
The application of a silicon-nitride based L3 optical nanocavity as a chemical sensor is explored. It is shown that by adjusting the thickness of an ultra-thin Lumogen Red film deposited onto the nanocavity surface, the fundamental optical mode undergoes
Brittle, Stuart   +6 more
core   +1 more source

Anomalous blue-shift of terahertz whispering-gallery modes via dielectric and metallic tuning

open access: yes, 2019
The vast majority of resonant systems show a red-shift for the resonance frequency when a perturbation, e.g. losses, are introduced to the system. In contrast, here we report for the first time the experimental demonstration of both red- and anomalous ...
Jones, Angus Harvey   +3 more
core   +1 more source

Gravitational red-shift and deflection of slow light [PDF]

open access: yes, 2008
We explore the nature of the classical propagation of light through media with strong frequency-dependent dispersion in the presence of a gravitational field.
A. N. Jordan   +9 more
core   +3 more sources

Effects of urea on activity and conformation of acid phosphatase from wheat germ

open access: yes浙江大学学报. 农业与生命科学版, 2004
Changes in conformation and activity of acid phosphatase from wheat germ following denaturation of the enzyme by urea solutions of different concentrations were measured by the shift in fluorescence and differential UV-absorption spectrum.
WANG Li-ming   +3 more
doaj   +1 more source

Modeling of the second harmonic generation in a lens-shaped InAs/GaAs quantum core/shell dot under temperature, pressure and applied electric field effects

open access: yesResults in Physics, 2020
In this paper, we explore the second harmonic generation (SHG) in a lens-shaped InAs/GaAs quantum core/shell (LSQCS). The three-dimensional Schrödinger equation is given under the framework of the effective mass approximation and it is solved by using ...
D. Makhlouf   +3 more
doaj   +1 more source

Reconstructing the metric of the local Universe from number counts observations

open access: yes, 2017
Number counts observations available with new surveys such as the Euclid mission will be an important source of information about the metric of the Universe.
Romano, Antonio Enea   +1 more
core   +1 more source

Photon Redshift in a Magnetic field

open access: yes, 2010
Previous results from the authors concerning the arising a tiny photon anomalous paramagnetic moment are also interpreted as a red-shift in analogy to the gravitational known effect.
ELIZABETH RODRÍGUEZ QUERTS   +2 more
core   +1 more source

Red-shifts and red herrings in geographical ecology [PDF]

open access: yesEcography, 2000
I draw attention to the need for ecologists to take spatial structure into account more seriously in hypothesis testing. If spatial autocorrelation is ignored, as it usually is, then analyses of ecological patterns in terms of environmental factors can produce very misleading results.
openaire   +1 more source

Ultrafast Lasing Dynamics in a CsPbBr3 Perovskite Microplate

open access: yesAdvanced Photonics Research, 2022
The perovskite microlaser is a competitive candidate of light source for optical communication and integrated photonic circuits. Understanding the fundamental mechanism of lasing is crucial for the upcoming devices.
Ju Wang   +8 more
doaj   +1 more source

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