Results 111 to 120 of about 158,369 (302)

Self-adjoint extensions of the two-valley Dirac operator with discontinuous infinite mass boundary conditions

open access: yes, 2020
We consider the four-component two-valley Dirac operator on a wedge in R2 with infinite mass boundary conditions, which enjoy a flip at the vertex. We show that it has deficiency indices (1,1) and we parametrize all its self-adjoint extensions, relying ...
Biagio Cassano, Vladimir Lotoreichik
core   +1 more source

Higgs-portal spin-1 dark matter with parity-violating interaction

open access: yesJournal of High Energy Physics
We introduce the spin-1 U(1) X gauged field X with Z 2 odd dark parity to evade the current strong constraints on kinetic mixing. Then, X becomes stable and a candidate for the dark matter. The lowest mass dimension of interaction is six, and the type is
Kimiko Yamashita
doaj   +1 more source

Directed evolution of enzymes at the crossroads of tradition and innovation

open access: yesFEBS Open Bio, EarlyView.
An iterative cycle of data‐driven enzyme optimization comprising four stages: genetic diversification of a template enzyme, expression of protein variants, high‐throughput evaluation, and machine‐learning‐guided redesign of the next variant library.
Maria Tomkova   +2 more
wiley   +1 more source

From energy provision to protein synthesis: Tunnelling nanotubes as mediators of intercellular metabolic cooperation in cancer

open access: yesFEBS Open Bio, EarlyView.
The cytoskeleton‐mediated transport of mitochondria via tunnelling nanotubes restores respiration, increases ATP production, rescues cells from apoptosis, activates the AKT/mTOR signalling pathway, promotes cell migration and invasiveness, contributes to cancer progression and treatment resistance.
Stanislava Martínková, Jan Trnka
wiley   +1 more source

The operator scheduling for Singapore mass transit system

open access: yes, 1984
This paper presents a mathematical formulation of the train operator scheduling problem in a Mass Rapid Transit System. Integer programs (IP) with 0-1 constraints matrices arise frequently in scheduling and staffing methods.
Goh, Lek-Oon
core  

Receiver operator characteristics curve for Mass-to-thorax ratio (MTR) and composite adverse outcome or need for intervention.

open access: yes, 2016
Receiver operator characteristics curve for Mass-to-thorax ratio (MTR) and composite adverse outcome or need for intervention.
Annegret Geipel (3179022)   +8 more
core   +1 more source

DMRG study of the theta-dependent mass spectrum in the 2-flavor Schwinger model

open access: yesJournal of High Energy Physics
We study the θ-dependent mass spectrum of the massive 2-flavor Schwinger model in the Hamiltonian formalism using the density-matrix renormalization group (DMRG).
Etsuko Itou   +2 more
doaj   +1 more source

Treatment with KCL‐286, a first‐in‐class retinoic acid receptor‐β (RARβ) agonist, ameliorates neuronal DNA damage and inflammation in a mouse model of Alzheimer's disease

open access: yesFEBS Open Bio, EarlyView.
Repair of neuronal DNA damage in Alzheimer's disease by KCL‐286. (A) Amyloid‐β oligomers and plaques impair neuronal DNA repair pathways, leading to DNA double‐strand breaks and glial activation. (B) KCL‐286 activates RARβ/RXR signalling via retinoic acid response elements (RAREs), associated with increased BRCA1 expression, enhanced DNA repair and ...
Natasha Hill   +6 more
wiley   +1 more source

NNLL QCD Contribution of the Electromagnetic Dipole Operator to Gamma(anti-B -> X(s) gamma)

open access: yes, 2006
We present an independent calculation of that part of the O(\alpha_s^2) contribution to the decay width \Gamma(\bar B -> X_s \gamma) which arises from the self-interference term of the electromagnetic dipole operator O_7.
Hovhannisyan, A.   +11 more
core   +1 more source

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