Results 81 to 90 of about 12,401 (280)

Half-life and spin of 60Mn^g [PDF]

open access: yes, 2006
A value of 0.28 +/- 0.02 s has been deduced for the half-life of the ground state of 60Mn, in sharp contrast to the previously adopted value of 51 +/- 6 s.
Brown, B. A.   +14 more
core   +3 more sources

Hypoxia Induces a Mitotic Survival Advantage After Radiotherapy in Head and Neck Cancer Cells

open access: yesInternational Journal of Cancer, EarlyView.
Hypoxic tumor environments significantly limit radiotherapy effectiveness against cancer, particularly in head and neck squamous cell carcinoma (HNSCC). Here, the authors tracked hypoxic and post‐hypoxic cells using a hypoxia‐fate mapping system in human papillomavirus (HPV)‐positive and HPV‐negative HNSCC models.
Marilyn Wegge   +3 more
wiley   +1 more source

Consistent Empirical Physical Formula Construction for Gamma Ray Angular Distribution Coefficients by Layered Feedforward Neural Network

open access: yesCumhuriyet Science Journal, 2018
Multipolarities of gamma rays andspins-parities of nuclear states are usually investigated by the angulardistribution of gamma rays emitted from aligned states formed by nuclearreactions.
Hüseyin Kaya   +2 more
doaj   +1 more source

Cross sections for the excitation of isovector charge-exchange resonances in 208Tl

open access: yes, 2003
The Glauber approximation for the treatment of heavy-ion scattering, has already been shown to give reliable predictions for the reaction cross section in the particular case of intermediate energy charge-exchange processes.
A. Erell   +21 more
core   +1 more source

Positron spectra from internal pair conversion observed in {238}U + {181}Ta collisions [PDF]

open access: yes, 2000
We present new results from measurements and simulations of positron spectra, originating from 238U + 181Ta collisions at beam energies close to the Coulomb barrier.
Berdermann, E.   +12 more
core   +3 more sources

Bio‐inspired nanophotonics: Structural color, chirality, and resonance metasurfaces

open access: yesInfoMat, EarlyView.
A butterfly‐wing‐inspired anisotropic plasmonic flatband resonant metasurface. Insets, photo of the butterfly, Sasakia charonda, and the SEM image of its wing scale (above); the SEM image of the metasurface (below). Abstract The dazzling colors of butterfly wings and hummingbird feathers are not painted with pigments, but crafted by nature's invisible ...
Weihan Liu, Yao Liang, Din Ping Tsai
wiley   +1 more source

RUSSIA IN THE MULTIPOLAR WORLD SYSTEM

open access: yesНаучный вестник МГТУ ГА, 2016
The article is devoted to the position of Russia in the modern «world-system», society today is undergoing revolutionary changes that have led to the fact that the Russian Federation has been facing a number of challenges: the reorganization of the state,
D. E. Krasnyansky
doaj  

Controlling Collective Quasiparticle Dynamics Beyond Decoherence in Topological Interfaces

open access: yesLaser &Photonics Reviews, EarlyView.
Gold nanoparticles placed above a deformed honeycomb plasmonic crystal couple to a chiral topological interface mode. The pseudospin‐split bands ψ+/ ψ− encode spin‐momentum locking, so emitters radiate directionally along the domain wall and share a common phase.
Fatemeh Davoodi
wiley   +1 more source

Improved Multipolar Hardy Inequalities

open access: yes, 2013
In this paper we prove optimal Hardy-type inequalities for Schrodinger operators with positive multi-singular inverse square potentials of the form $$A_{\lambda } := -\Delta- \lambda \displaystyle\sum _{1\leq i 0.$$ More precisely, we show that A λ is nonnegative in the sense of L 2 quadratic forms in \({\mathbb{R}}^{N}\), if and only if ...
Cristian Cazacu, Enrique Zuazua
openaire   +1 more source

Quantitative Analysis of Locus Coeruleus Neurons and Thalamic Noradrenergic Axons in a Progressive 1‐Methyl‐4‐phenyl‐1,2,3,6‐tetrahydropyridine Monkey Model of Parkinson's Disease

open access: yesMovement Disorders, EarlyView.
Abstract Background Parkinson's disease is mainly characterized by dopaminergic neurodegeneration in the substantia nigra pars compacta (SNc) and α‐synuclein accumulation. The locus coeruleus (LC) is also affected in Parkinson's disease and linked to some nonmotor symptoms, but the extent and timing of its degeneration remain unclear.
Megan Carrillo   +6 more
wiley   +1 more source

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