Results 61 to 70 of about 267,998 (292)

Optimizing photoactivation of PA‐mCherry for optical pooled CRISPR screens

open access: yesFEBS Open Bio, EarlyView.
Photoactivatable PA‐mCherry finds widespread use to optically tag individual cells. However, confocal 405 nm UV laser‐scanning (normal scan) is much less efficient than widefield UV illumination, limiting the use of PA‐mCherry on confocal instruments. We remedy this limitation by reporting that rapid and repeated confocal scanning with a low‐intensity,
Sravasti Mukherjee   +3 more
wiley   +1 more source

The spectral signature of cloud spatial structure in shortwave irradiance [PDF]

open access: yesAtmospheric Chemistry and Physics, 2016
In this paper, we used cloud imagery from a NASA field experiment in conjunction with three-dimensional radiative transfer calculations to show that cloud spatial structure manifests itself as a spectral signature in shortwave irradiance fields –
S. Song   +11 more
doaj   +1 more source

Theory of single-photon transport in a single-mode waveguide coupled to a cavity containing a two-level atom

open access: yes, 2009
The single-photon transport in a single-mode waveguide, coupled to a cavity embedded with a two-leval atom is analyzed. The single-photon transmission and reflection amplitudes, as well as the cavity and the atom excitation amplitudes, are solved exactly
A. C. Hewson   +7 more
core   +1 more source

Clustering Algorithm Reveals Dopamine‐Motor Mismatch in Cognitively Preserved Parkinson's Disease

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To explore the relationship between dopaminergic denervation and motor impairment in two de novo Parkinson's disease (PD) cohorts. Methods n = 249 PD patients from Parkinson's Progression Markers Initiative (PPMI) and n = 84 from an external clinical cohort.
Rachele Malito   +14 more
wiley   +1 more source

Duality and quantum state engineering in cavity arrays

open access: yesScientific Reports, 2017
A system of two coupled cavities with N − 1 photons is shown to be dynamically equivalent to an array of N coupled cavities containing one photon. Every transition in the two cavity system has a dual phenomenon in terms of photon transport in the cavity ...
Nilakantha Meher   +2 more
doaj   +1 more source

Geometric Potential and Transport in Photonic Topological Crystals [PDF]

open access: yesPhysical Review Letters, 2010
We report on the experimental realization of an optical analogue of a quantum geometric potential for light wave packets constrained on thin dielectric guiding layers fabricated in silica by the femtosecond laser writing technology. We further demonstrate the optical version of a topological crystal, with the observation of Bloch oscillations and Zener
A. Szameit   +6 more
openaire   +4 more sources

Radiation-Induced "Zero-Resistance State" and the Photon Assisted Transport

open access: yes, 2003
We demonstrate that the radiation induced "zero-resistance state" observed in a two-dimensional electron gas is a result of the non-trivial structure of the density of states of the systems and the photon assisted transport.
A. A. Ignatov   +5 more
core   +1 more source

CSF Monoamine Metabolites and Cognitive Trajectory in Early Parkinson's Disease

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Imaging and postmortem studies indicate that abnormalities in monoaminergic neurotransmission contribute to cognitive impairment in Parkinson's disease (PD). However, it remains uncertain if cerebrospinal fluid (CSF) monoamine metabolites can serve as biomarkers of cognitive decline in early PD.
Jing‐Yu Shao   +7 more
wiley   +1 more source

Photon-Inhibited Topological Transport in Quantum Well Heterostructures [PDF]

open access: yesPhysical Review Letters, 2015
5 pages, 3 ...
Farrell, Aaron, Pereg-Barnea, T.
openaire   +3 more sources

Two-photon transport through a waveguide coupling to a whispering gallery resonator containing an atom and photon-blockade effect

open access: yes, 2012
We investigate the two-photon transport through a waveguide side-coupling to a whispering-gallery-atom system. Using the Lehmann-Symanzik-Zimmermann (LSZ) reduction approach, we present the general formula for the two-photon processes including the two ...
H. J. Carmichael   +3 more
core   +1 more source

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