Results 81 to 90 of about 92,071 (290)

Resonating valence-bond physics on the honeycomb lattice

open access: yes, 2014
We study bond and spin correlations of the nearest-neighbour resonating valence bond (RVB) wavefunction for a SU($2$) symmetric $S=1/2$ antiferromagnet on the honeycomb lattice.
Damle, Kedar   +2 more
core   +1 more source

Black Holes and the SYM Phase Diagram [PDF]

open access: yes, 1998
Making combined use of the Matrix and Maldacena conjectures, the relation between various thermodynamic transitions in super Yang-Mills (SYM) and supergravity is clarified.
A. Sen   +37 more
core   +5 more sources

EDNRB‐dependent endothelin signaling reduces proliferation and promotes proneural‐to‐mesenchymal transition in gliomas

open access: yesMolecular Oncology, EarlyView.
Glioma cells mainly express the endothelin receptor EDNRB, while EDNRA is restricted to a perivascular tumor subpopulation. Endothelin signaling reduces glioma cell proliferation while promoting migration and a proneural‐to‐mesenchymal transition associated with poor prognosis. This pathway activates Ca2+, K+, ERK, and STAT3 signalings and is regulated
Donovan Pineau   +36 more
wiley   +1 more source

Multidirectional Power Flow Control among Double Winding Six-Phase Induction Machine Winding Sets [PDF]

open access: yes
This paper presents an indirect rotor-field oriented control (IRFOC) algorithm for symmetrical six-phase double-winding induction machines with four three-phase sub-winding sets.
Abduallah, AA, Dordevic, O, Jones, M
core  

On a new fixed point of the renormalization group operator for area-preserving maps

open access: yes, 2006
The breakup of the shearless invariant torus with winding number $\omega=\sqrt{2}-1$ is studied numerically using Greene's residue criterion in the standard nontwist map. The residue behavior and parameter scaling at the breakup suggests the existence of
A. Wurm   +29 more
core   +1 more source

Time-reversal-invariant $C_2$-symmetric higher-order topological superconductors

open access: yes, 2020
We propose a minimal lattice model for two-dimensional class DIII superconductors with $C_2$-protected higher-order topology. While this class of superconductors cannot be topologically characterized by symmetry eigenvalues at high symmetry momenta, we ...
Sarma, Sankar Das   +2 more
core   +1 more source

Turn-to-turn fault protection technique for synchronous machines without additional voltage transformers [PDF]

open access: yes, 2017
This paper presents a novel protection technique for the detection of inter-turn faults in synchronous machines. It is based on the calculation of voltage in the stator windings from the usual phases and neutral voltage, typically available in ...
Gyftakis, Konstantinos N.   +2 more
core   +1 more source

Engineered extracellular vesicles enriched with the miR‐214/199a cluster enhance the efficacy of chemotherapy in ovarian cancer

open access: yesMolecular Oncology, EarlyView.
Loss of the miR‐214/199a cluster is associated with recurrence in ovarian cancer. Engineered small extracellular vesicles (m214‐sEVs) elevate miR‐214‐3p/miR‐199a‐5p in tumor cells, suppress β‐catenin, TLR4, and YKT6 signaling, reprogram tumor‐derived sEV cargo, reduce chemoresistance and migration, and enhance carboplatin efficacy and survival in ...
Weida Wang   +12 more
wiley   +1 more source

Predictive Power Control of Novel N*3-phase PM Energy Storage Motor for Urban Rail Transit

open access: yesEnergies, 2020
High power density energy storage permanent magnet (PM) motor is an important energy storage module in flywheel energy storage system for urban rail transit. To expand the application of the PM motor in the field of urban rail transit, a predictive power
Wenjuan Zhang   +4 more
doaj   +1 more source

Chiral d-wave superconductivity on the honeycomb lattice close to the Mott state

open access: yes, 2014
We study superconductivity on the honeycomb lattice close to the Mott state at half-filling. Due to the sixfold lattice symmetry and disjoint Fermi surfaces at opposite momenta, we show that several different fully gapped superconducting states naturally
Black-Schaffer, Annica M.   +2 more
core   +1 more source

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