Results 11 to 20 of about 410,227 (240)

The Creation of Defects with Core Condensation [PDF]

open access: yes, 2006
Defects in superfluid 3He, high-Tc superconductors, QCD colour superfluids and cosmic vortons can possess (anti)ferromagnetic cores, and their generalisations.
A. Swarup   +6 more
core   +1 more source

Shock-Induced Defects in Bulk Materials [PDF]

open access: yesMRS Proceedings, 1997
ABSTRACTIn this paper examples of the shock-induced defects produced during shock compression which correlate with microstructure / mechanical property changes induced in materials due to shock prestraining are discussed. The characteristics of the shock impulse(peak shock pressure, pulse duration, and rarefaction rate) imparted to the material under ...
openaire   +3 more sources

Annihilation of edge dislocations in smectic A liquid crystals [PDF]

open access: yes, 2004
This paper presents a theoretical study of the annihilation of edge dislocations in the same smectic plane in a bulk smectic-A phase. We use a time-dependent Landau-Ginzburg approach where the smectic ordering is described by the complex order parameter ...
M. Ambrožič   +19 more
core   +4 more sources

Vacancy defect distributions in bulk ZnO crystals [PDF]

open access: yesSPIE Proceedings, 2007
We have used positron annihilation spectroscopy to study vacancy defects in ZnO single crystals grown by various methods from both commercial and academic sources. The combination of positron lifetime and Doppler broadening techniques with theoretical calculations provides the means to deduce both the identities and the concentrations of the ...
Filip Tuomisto, David C. Look
openaire   +2 more sources

Defect-induced magnetism in graphite through neutron irradiation

open access: yes, 2014
We have investigated the variation in the magnetization of highly ordered pyrolytic graphite (HOPG) after neutron irradiation, which introduces defects in the bulk sample and consequently gives rise to a large magnetic signal.
Arenholz, Elke   +7 more
core   +3 more sources

Hydrogen-induced defects in bulk niobium

open access: yesPhysical Review B, 2004
Our aim in the present work was to investigate changes of the defect structure of bulk niobium induced by hydrogen loading. The evolution of the microstructure with increasing hydrogen concentration was studied by x-ray diffraction and two complementary techniques of positron annihilation spectroscopy (PAS), namely positron lifetime spectroscopy and ...
Čížek, Jakub   +8 more
openaire   +4 more sources

Higher-order Floquet topological phases with corner and bulk bound states [PDF]

open access: yes, 2019
We report the theoretical discovery and characterization of higher-order Floquet topological phases dynamically generated in a periodically driven system with mirror symmetries.
Kumar, Abhishek   +2 more
core   +3 more sources

Point defects on the (110) surfaces of InP, InAs and InSb: a comparison with bulk [PDF]

open access: yes, 2006
The basic properties of point defects, such as local geometries, positions of charge-transfer levels, and formation energies, have been calculated using density-functional theory, both in the bulk and on the 110 surface of InP, InAs, and InSb. Based on
A. Höglund   +9 more
core   +1 more source

Brane Decay and Defect Formation

open access: yes, 2007
Topological defects are generically expected to form in models of brane inflation. Brane-anti-brane annihilation provides a way to gracefully end inflation, and the dynamics of the tachyon field results in defect formation.
Arttu Rajantie   +4 more
core   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

open access: yesFEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li   +2 more
wiley   +1 more source

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