Results 61 to 70 of about 21,051 (150)

String compactification, QCD axion and axion-photon-photon coupling

open access: yes, 2007
It is pointed out that there exist a few problems to be overcome toward an observable sub-eV QCD axion in superstring compactification. We give a general expression for the axion decay constant.
A.R. Zhitnitsky   +17 more
core   +1 more source

Topics in Quantum Computers

open access: yes, 1996
I provide an introduction to quantum computers, describing how they might be realized using language accessible to a solid state physicist. A listing of the minimal requirements for creating a quantum computer is given.
A Barenco   +32 more
core   +2 more sources

Evaluation of Exposure Assessment Methods and Procedures for Induction Hobs

open access: yesBioelectromagnetics, Volume 46, Issue 7, October 2025.
ABSTRACT Induction hobs generate strong alternating magnetic fields to heat pots by inducing eddy currents. These fields are the strongest close to the bottom of the cookware, but stray fields at large distances can still be substantial. In general, these are higher than the reference levels defined by international electromagnetic exposure safety ...
Jingtian Xi   +4 more
wiley   +1 more source

First Principles Calculations of Ionic Vibrational Frequencies in PbMg1/3Nb2/3O3

open access: yes, 2003
Lattice dynamics for several ordered supercells with composition PbMg1/3Nb2/3O (PMN) were calculated with first-principles frozen phonon methods. Nominal symmetries of the supercells studied are reduced by lattice instabilities.
Burton, E. P.   +2 more
core   +1 more source

Heavy Metals, Gut Microbiota, and Biochemical Markers: Unraveling the Complexities of Obesity

open access: yesMicrobiologyOpen, Volume 14, Issue 5, October 2025.
Elevated excretion of heavy metals in obese individuals is correlated with specific gut microbiome shifts and worsened metabolic health, suggesting environmental toxins may contribute to obesity by altering gut ecology. ABSTRACT Obesity is a global public health threat.
Ahmed Basim Mohamed Alamer   +2 more
wiley   +1 more source

Del telégrafo a la app: la evolución y el estado actual de los prestadores de remesas desde los Estados Unidos hasta México, ca. 1980-2020*

open access: yesEl Trimestre Económico
Este artículo ofrece una primera aproximación a la evolución de la estructura y los participantes en el mercado de remesas del corredor entre los Estados Unidos y México.
Bernardo Bátiz Lazo   +1 more
doaj   +1 more source

Domestic Debt and Economic Growth in Nigeria: An ARDL Bounds Test Approach

open access: yesEconomics and Business, 2019
The study examines the long-run relationship between domestic debt and the fiscal policy of economic growth in Nigeria in the period from 1981 to 2013 owing to government reforms in the financial system, particularly due to the establishment of the Debt ...
Ibrahim Ayuba K., Khan Shazida Mohd
doaj   +1 more source

On the cohomology of some exceptional symmetric spaces

open access: yes, 2016
This is a survey on the construction of a canonical or "octonionic K\"ahler" 8-form, representing one of the generators of the cohomology of the four Cayley-Rosenfeld projective planes.
A. Borel   +20 more
core   +1 more source

Tension chord model for CFRP‐prestressed structural concrete

open access: yesStructural Concrete, Volume 26, Issue 5, Page 6576-6593, October 2025.
Abstract This paper introduces a mechanical model for steel‐reinforced concrete prestressed with bonded CFRP rods and presents the findings of an experimental campaign conducted to validate the model. The study is part of a project aiming at developing a railway bridge system in Switzerland that utilizes stainless steel reinforcing bars combined with ...
Andreas Näsbom   +3 more
wiley   +1 more source

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