Results 41 to 50 of about 1,567,571 (289)

Exact charged black-hole solutions in D-dimensional f(T) gravity: torsion vs curvature analysis [PDF]

open access: yes, 2012
We extract exact charged black-hole solutions with flat transverse sections in the framework of D-dimensional Maxwell-f(T) gravity, and we analyze the singularities and horizons based on both torsion and curvature invariants.
Capozziello, Salvatore   +3 more
core   +2 more sources

Time dependent hydraulic falls and trapped waves over submerged obstructions [PDF]

open access: yes, 2014
We consider the classical problem of a free surface flowing past one or more disturbances in a channel. The fluid is assumed to be inviscid and incompressible, and the flow, irrotational.
Page, Charlotte, Parau, Emilian
core   +1 more source

Cell surface interactome analysis identifies TSPAN4 as a negative regulator of PD‐L1 in melanoma

open access: yesMolecular Oncology, EarlyView.
Using cell surface proximity biotinylation, we identified tetraspanin TSPAN4 within the PD‐L1 interactome of melanoma cells. TSPAN4 negatively regulates PD‐L1 expression and lateral mobility by limiting its interaction with CMTM6 and promoting PD‐L1 degradation.
Guus A. Franken   +7 more
wiley   +1 more source

Why gravity is not an entropic force [PDF]

open access: yes, 2010
The remarkable connections between gravity and thermodynamics seem to imply that gravity is not fundamental but emergent, and in particular, as Verlinde suggested, gravity is probably an entropic force.
Shan, Gao
core   +1 more source

The generalized second law of thermodynamics in generalized gravity theories

open access: yes, 2008
We investigate the generalized second law of thermodynamics (GSL) in generalized theories of gravity. We examine the total entropy evolution with time including the horizon entropy, the non-equilibrium entropy production, and the entropy of all matter ...
Bin Wang   +18 more
core   +1 more source

Phenotypic and genotypic characterization of single circulating tumor cells in the follow‐up of high‐grade serous ovarian cancer

open access: yesMolecular Oncology, EarlyView.
Single circulating tumor cells (sCTCs) from high‐grade serous ovarian cancer patients were enriched, imaged, and genomically profiled using WGA and NGS at different time points during treatment. sCTCs revealed enrichment of alterations in Chromosomes 2, 7, and 12 as well as persistent or emerging oncogenic CNAs, supporting sCTC identity.
Carolin Salmon   +9 more
wiley   +1 more source

The information metric on the moduli space of instantons with global symmetries

open access: yesPhysics Letters B, 2016
In this note we revisit Hitchin's prescription [1] of the Fisher metric as a natural measure on the moduli space of instantons that encodes the space–time symmetries of a classical field theory. Motivated by the idea of the moduli space of supersymmetric
Emanuel Malek   +2 more
doaj   +1 more source

Quantum Gravity: Has Spacetime Quantum Properties? [PDF]

open access: yes, 2009
The incompatibility between GR and QM is generally seen as a sufficient motivation for the development of a theory of Quantum Gravity. If - so a typical argumentation - QM gives a universally valid basis for the description of all natural systems, then ...
Hedrich, Reiner
core   +1 more source

A New Property of the Electromagnetic/Yang-Mills-Conformal Gravity System in Spherical Symmetry

open access: yes, 2019
We find a new property in $W^2$-conformal gravity in spherical symmetry. We demonstrate that the charge of the electromagnetic field varies with respect to the partial scaling symmetry (conformal transformations in subspaces of a spacetime) in the ...
Zhang, Hongsheng
core   +1 more source

Inhomogeneous gravity [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2005
We study the inhomogeneous cosmological evolution of the Newtonian gravitational 'constant' G in the framework of scalar-tensor theories. We investigate the differences that arise between the evolution of G in the background universes and in local inhomogeneities that have separated out from the global expansion. Exact inhomogeneous solutions are found
Clifton, T, Mota, DF, Barrow, JD
openaire   +4 more sources

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