Results 111 to 120 of about 66,752 (296)

Distribution of Positron Annihilation Lifetime Components

open access: yesمجلة بغداد للعلوم, 2008
The intensities of the positron annihilation lifetime components are shown to be related to the free volume model, and the theoretical value of the ratio between the singlet to the triplet state intensities, described by the ratio η, is shown to follow ...
Ahmed Abdul-Razzaq Selman   +1 more
doaj   +1 more source

Intrinsic Phonons as a Dynamic Control Knob for Catalytic Reactivity in 2D Materials

open access: yesAdvanced Science, EarlyView.
Intrinsic phonon excitations are demonstrated to serve as a dynamic control knob for catalytic reactivity in 2D materials. Mode‐selective lattice vibrations reconstruct the electronic structure, lower oxygen evolution reaction barriers, establishing a phonon‐engineering paradigm for dynamically regulating electrocatalysis beyond conventional static ...
Kai Ren   +5 more
wiley   +1 more source

Annihilation by Michel Houellebecq

open access: yes
'A Litmus test in France's roiling hostilities', Houellebecq's satire is compelling yet the recent revelations of the Gisele Pelicot mass rape trial cast a retroactive toxicity onto Houellebecq’s misogyny; a Monsieur Tout-Le-Monde vibe dogs the writer’s ...
O'Connor, F.
core   +3 more sources

Tests of the JETSET Bose-Einstein correlation model in the

open access: yes, 2007
Introduction Recent interest in profound studies of the Bose-Einstein correlations (BEC in what follows) was sparked by reports on possible influence of this phenomenon on the measured value of the W boson mass in e + e \Gamma annihilation 1;2 ...
Gamma Annihilation Process
core  

Voltage‐Driven Non‐Volatile Interconversion Between Giant Single‐Domain and Multidomain Magnetic States in a Multiferroic Heterostructure

open access: yesAdvanced Science, EarlyView.
Non‐volatile voltage control of magnetic configurations is achieved in a strain‐coupled multiferroic heterostructure. Voltage pulses reversibly interconvert giant single‐domain and multidomain magnetic states, which remain stable at zero applied voltage. ABSTRACT Voltage control of magnetic states in multiferroic heterostructures represents a promising
M. Ghidini   +11 more
wiley   +1 more source

Engineering Ultrastable Intrinsic Radicals: Graphene Quantum Dots With NIR‐II Emission for Dynamic Deep‐Tissue Bioimaging

open access: yesAdvanced Science, EarlyView.
Stable radicals are attractive for photonic and quantum information technologies but are often limited by instability. We stabilize intrinsic radicals in graphene quantum dots via 2D polymerization of perylene derivatives, where bilayer defect confinement suppresses quenching (100–500 K).
Qin Xu   +9 more
wiley   +1 more source

Annihilation

open access: yes, 2008
The ever-present possibility of death forces upon us the question of life’s meaning and for this reason death has been a central concern of philosophers throughout history. From Socrates to Heidegger, philosophers have grappled with the nature and significance of death. In Annihilation, Christopher Belshaw explores two central questions at the heart of
openaire   +2 more sources

Positron annihilation in Ni3Al: Theory and experiment

open access: yes, 2001
SCOPUS: cp.kinfo:eu-repo/semantics ...
Mondelaers, Willy   +19 more
core  

Molecular‐Level Pore Engineering for Precise Separation via Active Solvent‐Mediated Interfacial Polymerization

open access: yesAdvanced Science, EarlyView.
We demonstrate that microemulsion solvents can actively template molecular‐level pores within selective layer during interfacial polymerization. By creating localized quasi‐homogeneous polymerization zones, the membrane achieved a 7.1‐fold enhancement in water permeance with increased selectivity.
Feng Li   +4 more
wiley   +1 more source

Positron–Electron Annihilation in Hydrogen–Antihydrogen Collisions

open access: yes, 2004
The rate of direct positron–electron annihilation in cold hydrogen–antihydrogen collisions has been calculated and compared to the rate of proton–antiproton annihilation. We show that the lepton annihilation rate in H̄H collisions depends on the relative
Dalgarno, A.   +11 more
core   +1 more source

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