Results 91 to 100 of about 3,411,153 (359)

Holographic Dark Energy from Fluid/Gravity Duality Constraint by Cosmological Observations

, 2018
In this paper, we obtain a holographic model of dark energy using the fluid/gravity duality. This model will be dual to a higher dimensional Schwarzschild black hole, and we would use fluid/gravity duality to relate to the parameters of this black hole ...
Abreu, Everton M. C., Bonilla, Alexander, Faizal, Mir, Pourhassan, Behnam   +3 more
core   +1 more source

Affine equation of state from quintessence and k-essence fields [PDF]

, 2007
We explore the possibility that a scalar field with appropriate Lagrangian can mimic a perfect fluid with an affine barotropic equation of state. The latter can be thought of as a generic cosmological dark component evolving as an effective cosmological ...
Amedeo Balbi, Amendola L, Babichev E, Balbi A, Bertacca D Matarrese S Pietroni M, Chiba T, Claudia Quercellini, Ellis G F R, Holman R Naidu S, Marco Bruni, Pietrobon D, Seljak U, Spergel D N, Visser M, Wainwright J   +14 more
core   +2 more sources

Kiselev black holes in anti-de Sitter spacetime are not viable

Nuclear Physics B
While the Kiselev black hole solution does not describe a perfect fluid quintessence, it is possible that dark energy fluid is not isotropic, and so one may hope that the solution may still describe at least locally a black hole embedded in such a dark ...
Jiayi Xia, Yen Chin Ong
doaj   +1 more source

DARK FLUID: A UNIFIED FRAMEWORK FOR MODIFIED NEWTONIAN DYNAMICS, DARK MATTER, AND DARK ENERGY [PDF]

The Astrophysical Journal, 2010
Empirical theories of dark matter (DM) like modified Newtonian dynamics (MOND) gravity and of dark energy (DE) like f(R) gravity were motivated by astronomical data. But could these theories be branches rooted from a more general and hence generic framework?
Zhao, H., Li, B.
openaire   +2 more sources

A Cre‐dependent lentiviral vector for neuron subtype‐specific expression of large proteins

FEBS Letters, EarlyView.
We designed a versatile and modular lentivector comprising a Cre‐dependent switch and self‐cleaving 2A peptide and tested it for co‐expression of GFP and a 2.8 kb gene of interest (GOI) in mouse cortical parvalbumin (PV+) interneurons and midbrain dopamine (TH+) neurons.
Weixuan Xue, Sandrine Picaud, Régine Hepp, Stéphanie Pons, Uwe Maskos, Bertrand Lambolez, Ludovic Tricoire   +6 more
wiley   +1 more source

Could pressureless dark matter have pressure?

, 2012
A two-fluid dark matter model, in which dark matter is represented as a two-component fluid thermodynamic system, without interaction between the constituent particles of different species, and with each distinct component having a different four ...
Albuquerque, Bernal, Bertolami, Bharadwaj, Binney, Boehmer, Boehmer, Boehmer, Boriello, Borowiec, Briscese, Burkert, Capozziello, Capozziello, Chavanis, Chavanis, Francisco S.N. Lobo, Fuchs, Giannios, Haager, Haager, Harko, Harko, Harko, Harko, Hernández, Herrera, Hogan, Klypin, Letelier, Letelier, Madsen, Martins, Matos, Mielke, Navarro, Navarro, Nucamendi, Ostriker, Overduin, Padmanabhan, Peebles, Persic, Rubin, Saxton, Su, Tiberiu Harko   +46 more
core   +1 more source

Bounce universe induced by an inhomogeneous dark fluid coupled with dark matter [PDF]

Modern Physics Letters A, 2014
We investigate cosmological models with a linear inhomogeneous time-dependent equation-of-state (EoS) for the dark energy, coupled with dark matter, leading to a bounce cosmology. Equivalent descriptions in terms of the EoS parameters for an exponential, a power-law, or a double exponential form of the scale factor a is obtained.
Brevik, I., Obukhov, V. V., Timoshkin, A. V.   +2 more
openaire   +2 more sources

Targeting EZH2 reverses thyroid cell dedifferentiation and enhances iodide uptake in anaplastic thyroid cancer

FEBS Letters, EarlyView.
Anaplastic thyroid cancer (ATC) lacks iodide uptake ability due to MAPK activation increasing the expression of the histone methyltransferase EZH2, which represses thyroid differentiation genes (TDGs) such as the sodium iodide symporter (NIS). Dual inhibition of MAPK (U0126) and EZH2 (EPZ6438/Tazemetostat) reverses this mechanism, thus restoring TDG ...
Diego Claro de Mello, Marcella Maringolo Cristovão, Guilherme Henrique, Vinicius Gonçalves Rodrigues, Caroline Serrano‐Nascimento, Edna Teruko Kimura, Cesar Seigi Fuziwara   +6 more
wiley   +1 more source

Unifying dark energy and dark matter with a scalar field

, 2005
The standard model of cosmology considers the existence of two components of unknown nature, ``dark matter'' and ``dark energy'', which determine the cosmological evolution. Their nature remains unknown, and other models can also be considered.
Arbey, A.
core   +1 more source

Peptide‐based ligand antagonists block a Vibrio cholerae adhesin

FEBS Letters, EarlyView.
The structure of a peptide‐binding domain of the Vibrio cholerae adhesin FrhA was solved by X‐ray crystallography, revealing how the inhibitory peptide AGYTD binds tightly at its Ca2+‐coordinated pocket. Structure‐guided design incorporating D‐amino acids enhanced binding affinity, providing a foundation for developing anti‐adhesion therapeutics ...
Mingyu Wang, Grace Du, Charity Yongo‐Luwawa, Angelina Lu, Brett Kinrade, Kim Munro, Karl E. Klose, William D. Lubell, Peter Davies, Shuaiqi Guo   +9 more
wiley   +1 more source