Results 41 to 50 of about 1,112,853 (291)

Electron-phonon interaction via Pekar mechanism in nanostructures [PDF]

open access: yes, 2004
We consider an electron-acoustic phonon coupling mechanism associated with the dependence of crystal dielectric permittivity on the strain (the so-called Pekar mechanism) in nanostructures characterized by strong confining electric fields. The efficiency
A. A. Demidenko   +14 more
core   +2 more sources

Electric‐Field‐Controlled Dopant Distribution in Organic Semiconductors

open access: yesAdvanced Materials, 2017
Stable electrical doping of organic semiconductors is fundamental for the functionality of high performance devices. It is known that dopants can be subjected to strong diffusion in certain organic semiconductors. This work studies the impact of operating conditions on thin films of the polymer poly(3‐hexylthiophene) (P3HT) and the small molecule Spiro‐
Lars Müller   +12 more
openaire   +4 more sources

Portable Low‐Field Magnetic Resonance Imaging in People With Human Immunodeficiency Virus

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective The aging population of people with HIV (PWH) raises heightened concerns regarding accelerated aging and dementia. Portable, low‐field MRI (LF‐MRI) is an innovative technology that could enhance access and facilitate routine monitoring of PWH.
Annabel Sorby‐Adams   +14 more
wiley   +1 more source

Study on electric field distribution characteristics of the maintenance area when UHV AC transmission line crossing 220 kV tower

open access: yesThe Journal of Engineering, 2019
With the rapid development of China's power grid, it is becoming increasingly common that the multi-circuit overhead transmission lines cross over each other.
Feng Huo   +4 more
doaj   +1 more source

Grading ring parameters optimization for 220 kV metal‐oxide arrester using 3D‐FEM method and bat algorithm

open access: yesIET Science, Measurement & Technology, 2021
Aging of metal oxide surge arresters is mainly affected by the high electric stress near the high voltage electrode. It has been observed that the distribution of voltage and electric field along an arrester is non‐uniform.
Nadjim Alti   +2 more
doaj   +1 more source

The flux distribution of the three quark system in SU(3)

open access: yes, 2002
We study the abelian color-flux distribution of the three quark system in the maximally abelian gauge on SU(3) lattices. The distribution of the color electric field suggests $Y Ansatz$, which might be interpreted through the dual superconductor picture ...
Alexandrou   +13 more
core   +2 more sources

Functional Connectivity Linked to Cognitive Recovery After Minor Stroke

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Patients with minor stroke exhibit slowed processing speed and generalized alterations in functional connectivity involving frontoparietal cortex (FPC). The pattern of connectivity evolves over time. In this study, we examine the relationship of functional connectivity patterns to cognitive performance, to determine ...
Vrishab Commuri   +7 more
wiley   +1 more source

Analysis of the influence of configuration parameters on the electric field distribution of the main insulation structure of valve‐side winding of converter transformer considering electro‐thermal coupling

open access: yesIET Electric Power Applications
The variation of configuration parameters in the insulation structure of transformers significantly impacts the distribution of electric fields. Current research on electric field distribution calculations often overlooks the influence of electric field ...
Lijun Yang   +3 more
doaj   +1 more source

Analytical and numerical quantification and comparison of the local electric field in the tissue for different electrode configurations

open access: yesBioMedical Engineering OnLine, 2007
Background Electrochemotherapy and gene electrotransfer are novel promising treatments employing locally applied high electric pulses to introduce chemotherapeutic drugs into tumor cells or genes into target cells based on the cell membrane ...
Pavlin Mojca   +2 more
doaj   +1 more source

Research on Electric Field Detection of Degraded Insulators Based on a Sensitive Detection Method under Complex Operating Conditions

open access: yesApplied Sciences, 2022
Insulators are the basis of the stable operation of transmission lines, and it is particularly important to regularly detect the insulation performance of insulators.
Song Gao   +6 more
doaj   +1 more source

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