Results 91 to 100 of about 1,023,583 (388)

Gauge Model of Quark-Lepton Nonuniversality

open access: yes, 2002
We propose a gauge model where quark-lepton universality is an accidental symmetry which is only approximate, in analogy to the well-accepted notion that strong isospin is accidental and approximate.
Li, Xiao-Yuan, Ma, Ernest
core   +1 more source

Fate of Accidental Symmetries of the Relativistic Hydrogen Atom in a Spherical Cavity [PDF]

open access: yes, 2015
The non-relativistic hydrogen atom enjoys an accidental $SO(4)$ symmetry, that enlarges the rotational $SO(3)$ symmetry, by extending the angular momentum algebra with the Runge-Lenz vector.
Al-Hashimi, M. H.   +2 more
core   +2 more sources

Functional Materials for Environmental Energy Harvesting in Smart Agriculture via Triboelectric Nanogenerators

open access: yesAdvanced Functional Materials, EarlyView.
This review explores functional and responsive materials for triboelectric nanogenerators (TENGs) in sustainable smart agriculture. It examines how particulate contamination and dirt affect charge transfer and efficiency. Environmental challenges and strategies to enhance durability and responsiveness are outlined, including active functional layers ...
Rafael R. A. Silva   +9 more
wiley   +1 more source

Accidental dark matter: Case in the scale invariant local B -L model [PDF]

open access: yes, 2015
We explore the idea of accidental dark matter (aDM) stability in the scale invariant local $U(1)_{B-L}$ model, which is a theory for neutrino and at the same time radiatively breaks scale invariance via quantum mechanical dynamics in the $U(1)_{B-L ...
Jun Guo   +3 more
semanticscholar   +1 more source

Advanced Cellulose‐Based Gels for Wearable Physiological Monitoring: From Fiber Modification to Application Optimization

open access: yesAdvanced Functional Materials, EarlyView.
This review discusses cellulose‐based hydrogels technology, analyzes their application progress in physiological signal monitoring, and explores the effects of pretreatment, crosslinking, and molding methods on gel performance, to provide valuable insights into the efficient utilization of plant fibers and the environmentally friendly development of ...
Zhiming Wang   +8 more
wiley   +1 more source

Department of Health's accidental injury research initiative [PDF]

open access: yes, 2005
In 1999 the Government?s White Paper, Saving Lives, Our Healthier Nationidentified accidental injury as a priority for action. It set national targets to reducethe rates of death associated with accidental injury in England by 2010 by at leastone fifth ...
Ward, H
core  

Jet Substructure by Accident [PDF]

open access: yes, 2013
We propose a new search strategy for high-multiplicity hadronic final states. When new particles are produced at threshold, the distribution of their decay products is approximately isotropic.
Cohen, Timothy   +3 more
core   +2 more sources

Realization of Complex‐Shaped Magnetic Nanotubes with 3D Printing and Electrodeposition

open access: yesAdvanced Functional Materials, EarlyView.
Complex‐shaped magnetic nanotubes were fabricated by coating three‐dimensional nanoscaffolds fabricated with focused electron beam induced deposition with a magnetic coating via electrodeposition. X‐ray magnetic microscopy and simulations revealed an azimuthal magnetic configuration within the nanotubes and pinning of domain walls at curved vertices ...
Claudia Fernández‐González   +15 more
wiley   +1 more source

Crossing conditions in coupled cluster theory [PDF]

open access: yes, 2017
We derive the crossing conditions at conical intersections between electronic states in coupled cluster theory, and show that if the coupled cluster Jacobian matrix is nondefective, two (three) independent conditions are correctly placed on the nuclear ...
Kjønstad, Eirik F.   +3 more
core   +2 more sources

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