Results 31 to 40 of about 7,460,073 (366)

Towards an Improved Test of the Standard Model’s Most Precise Prediction

open access: yesAtoms, 2019
The electron and positron magnetic moments are the most precise prediction of the standard model of particle physics. The most accurate measurement of a property of an elementary particle has been made to test this result.
G. Gabrielse   +3 more
doaj   +1 more source

Electronic Markets and Electronic Hierarchies [PDF]

open access: yesCommunications of the ACM, 1987
Abstract The innovations in information technologies of the past two decades have radically reduced the time and cost of processing and communicating information. These reductions have in turn brought many changes in the ways that tasks are accomplished in firms.
Thomas W. Malone   +2 more
openaire   +2 more sources

Baryon breakdown in black hole

open access: yesFrontiers in Physics, 2022
According to relativity theory, a black hole is a distinct region in spacetime; according to astronomical observations, it is a celestial body transforming matter into high-energy jets.
Lauri Lehmonen, Arto Annila
doaj   +1 more source

Ex vivo analysis of root canal cleaning using Endo-PTC associated to NaOCl and different irrigant solutions

open access: yesBrazilian Oral Research, 2010
The aim of this study was to assess qualitatively, by means of SEM images, the cleaning of the dentin walls of root canals after chemical-surgical preparation using Endo-PTC cream with 0.5% and 1% sodium hypochlorite and different final irrigating ...
Andrea Kanako Yamazaki   +4 more
doaj   +1 more source

Chlorambucil effect on B lymphocites in the peripheral blood of patients with chronic lymphocytic leukemia: Cell ultrastructure investigation [PDF]

open access: yesVojnosanitetski Pregled, 2003
B type Chronic Lymphocytic Leukemia (B-CLL) is a malignant disease characterized by the progressive accumulation of morphologically mature, but immunologically dysphunctional CD 5+ lymphocytes in the blood, bone marrow and lymphatic organs in the early ...
Brajušković Goran R.   +2 more
doaj   +1 more source

Electron-Hole Diffusion Lengths Exceeding 1 Micrometer in an Organometal Trihalide Perovskite Absorber

open access: yesScience, 2013
Unrestricted Travel in Solar Cells In the past 2 years, organolead halide perovskites have emerged as a promising class of light-harvesting media in experimental solar cells, but the physical basis for their efficiency has been unclear (see the ...
S. Stranks   +8 more
semanticscholar   +1 more source

Total, direct and dissociative electron impact ionization cross sections of the acetylene molecule [PDF]

open access: yesJournal of the Serbian Chemical Society, 2000
The total electron impact ionization cross sections of the acetylene molecule have been measured in the incident electron energy range from threshold to 1000 eV.
Josifov Goran   +3 more
doaj   +3 more sources

Laser-Wakefield Electron Beams as Drivers of High-Quality Positron Beams and Inverse-Compton-Scattered Photon Beams

open access: yesFrontiers in Physics, 2019
The fast-paced development of laser-wakefield electron acceleration has recently culminated in the generation of electron beams with extreme characteristics, including femtosecond-scale duration, mrad divergence, and high-energy.
Aaron Alejo   +3 more
doaj   +1 more source

On the question of the radius of elementary particles [PDF]

open access: yesE3S Web of Conferences, 2023
This article belongs to the field of theoretical physics, specifically the study of elementary particles. We discuss the parameters of elementary particles, their interactions with gravitational potential and magnetic fields, stability with respect to ...
Safonova Nina
doaj   +1 more source

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