Results 41 to 50 of about 1,885,079 (269)

Control of femtosecond multi-filamentation in glass by designable patterned optical fields

open access: yesAIP Advances, 2016
We present a scheme for realizing femtosecond multi-filamentation with designable quantity and locations of filaments, based on the control of multi-focal spots formed by patterned optical fields (POFs) composed of multiple individual optical fields ...
Ping-Ping Li   +8 more
doaj   +1 more source

Weak Approachability [PDF]

open access: yesMathematics of Operations Research, 1992
In this paper, we study repeated games with vector payoffs. Following Blackwell [2], we define weak approachability and its dual property, weak excludability. We use results from differential games with fixed duration to prove that every set is either weakly approachable or weakly excludable.
openaire   +3 more sources

Three phosphatase families form a community: The phosphohydrolases that act upon inositol pyrophosphates

open access: yesFEBS Letters, EarlyView.
Inositol pyrophosphates are energy‐rich signaling molecules that perform critical functions in cells. Three different families of phosphatases hydrolyze the β phosphate of the inositol pyrophosphate molecules: two have narrow specificities and one is promiscuous.
Ronda J. Rolfes
wiley   +1 more source

CUBIC HYPER KU-IDEALS

open access: yesJournal of New Theory, 2017
–It is known that, the concept of hyper KU-algebras is a generalization of KU-algebras. In this paper, we define cubic (strong, weak,s-weak) hyper KU-ideals of hyper KU-algebras and related properties are ...
Samy Mohammed Mostafa   +2 more
doaj  

If the weak were strong and the strong were weak [PDF]

open access: yesSciPost Physics, 2019
We explore the phase structure of the Standard Model as the relative strengths of the SU(2) S U ( 2
Tong, David, Lohitsiri, Nakarin
openaire   +3 more sources

Design and analysis strategies for robust microbiome ageing research

open access: yesFEBS Letters, EarlyView.
The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik   +5 more
wiley   +1 more source

Triaxial closed-loop measurement based on a single-beam zero-field optically pumped magnetometer

open access: yesFrontiers in Physics, 2022
In this study, we propose an approach for the simultaneous measurement of triaxial magnetic fields using a single-beam zero-field optically pumped atomic magnetometer, in which a rotational high-frequency (ω1) and another high-frequency (ω2) modulated ...
Kun Wang   +14 more
doaj   +1 more source

The Weaknesses of Weak Preemptionism

open access: yesThe Philosophical Quarterly, 2020
Abstract According to preemptionism, a layperson should treat the fact that an epistemic authority believes p as a reason to believe p that replaces her other reasons relevant to believing p and is not simply added to them. Many authors have found the unqualified version of preemptionism, as defended by Linda Zagzebski, too strong.
openaire   +1 more source

Reconstructing enzyme evolution by protein engineering

open access: yesFEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler   +2 more
wiley   +1 more source

Role of photonic angular momentum states in nonreciprocal diffraction from magneto-optical cylinder arrays

open access: yesAIP Advances, 2014
Optical eigenstates in a concentrically symmetric resonator are photonic angular momentum states (PAMSs) with quantized optical orbital angular momentums (OAMs). Nonreciprocal optical phenomena can be obtained if we lift the degeneracy of PAMSs.
Tian-Jing Guo   +5 more
doaj   +1 more source

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