Results 61 to 70 of about 77,425 (318)

Barrow holographic dark energy models in Lyra and general relativity theories

Journal of New Results in Science
This study investigates the Barrow holographic dark energy (BHDE) matter distribution in the Bianchi I universe model in Lyra and General Relativity Theories.
Sezgin Aygün, Arzu Aktaş
doaj   +1 more source

Shear free solutions in General Relativity Theory

, 2011
The Goldberg-Sachs theorem is an exact result on shear-free null geodesics in a vacuum spacetime. It is compared and contrasted with an exact result for pressure-free matter: shear-free flows cannot both expand and rotate.
B.J. Carr, C.B. Collins, C.B. Collins, C.G. Tsagas, E. Newman, E. Schücking, G.F.R. Ellis, G.F.R. Ellis, G.F.R. Ellis, George F. R. Ellis, H. Balasin, H. Bondi, H. Bondi, H. Elst van, H. Elst van, I. Robinson, J. Carminati, J.M.M. Senovilla, J.V. Narlikar, L. Wylleman, M. Bruni, N. Van den Bergh, N. Van den Bergh, P.K.S. Dunsby, R. D’Inverno, R. Maartens, R. Penrose, R. Penrose, R. Penrose, R.K. Sachs, S. Dain, S. Matarrese, S.W. Hawking, S.W. Hawking, W. Israel   +34 more
core   +1 more source

Novel and unscrutinized immune entities of the zebrafish gut

FEBS Letters, EarlyView.
Understudied cells of the zebrafish immune system include bona fide immune cells and epithelial (‐derived) cells with immune functions. Research focusing on zebrafish cells which demonstrate similarities to mammalian immune cell counterparts may help us understand the pathologies in which they are implicated. Currently available and advanced tools make
Audrey Inge Schytz Andersen‐Civil, Marine Mantel, Julia Soh, Serge Mostowy, Sylvia Brugman, Gilles Claude Vanwalleghem   +5 more
wiley   +1 more source

(Compactified) black branes in four dimensional f(R)-gravity

Physics Letters B, 2018
A new family of analytical solutions in a four dimensional static spacetime is presented for f(R)-gravity. In contrast to General Relativity, we find that a non trivial black brane/string solution is supported in vacuum power law f(R)-gravity for ...
N. Dimakis, Alex Giacomini, Andronikos Paliathanasis   +2 more
doaj   +1 more source

Twisted Gravitational Waves

, 2018
In general relativity (GR), linearized gravitational waves propagating in empty Minkowski spacetime along a fixed spatial direction have the property that the wave front is the Euclidean plane.
Bini, Donato, Chicone, Carmen, Mashhoon, Bahram   +2 more
core   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

Some exact non-vacuum Bianchi VI0 and VII0 instantons

, 1999
We report some new exact instantons in general relativity. These solutions are K\"ahler and fall into the symmetry classes of Bianchi types VI0 and VII0, with matter content of a stiff fluid.
't Hooft G, 't Hooft G, Abramowitz M, Aliev A N, Belavin A A, Byrd P F, Cayley A, Gibbons G, John D Barrow, Lorenz-Petzold D, Lorenz-Petzold D, Lukash V, McLaughlin D, Misner C, P M Saffin, Ryan M, Spokoiny B L, Yves Gaspar   +17 more
core   +1 more source

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

FEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho, Shin Morioka, Junko Sasaki, Takehiko Sasaki   +3 more
wiley   +1 more source

On the limits of Brans-Dicke spacetimes: a coordinate-free approach

, 1993
We investigate the limit of Brans-Dicke spacetimes as the scalar field coupling constant omega tends to infinity applying a coordinate-free technique. We obtain the limits of some known exact solutions. It is shown that these limits may not correspond to
A. Karlhede, A. Karlhede, A. Koutras, A. R. G. Sánchez, C. Brans, C. Romero, C. Romero, C. Romero, D. Kramer, D. Lorenz, E. Cartan, F. M. Paiva, F. M. Paiva, G. C. Joly, H. Nariai, H. Nariai, J. O'Hanlon, M. A. H. MacCallum, M. A. H. MacCallum, R. Geroch, R. Penrose, R. Penrose   +21 more
core   +2 more sources

Multidimensional OMICs reveal ARID1A orchestrated control of DNA damage, splicing, and cell cycle in normal‐like and malignant urothelial cells

Molecular Oncology, EarlyView.
Loss of the frequently mutated chromatin remodeler ARID1A, a subunit of the SWI/SNF cBAF complex, results in less open chromatin, alternative splicing, and the failure to stop cells from progressing through the cell cycle after DNA damage in bladder (cancer) cells. Created in BioRender. Epigenetic regulators, such as the SWI/SNF complex, with important
Rebecca M. Schlösser, Florian Krumbach, Eyleen Corrales, Geoffroy Andrieux, Christian Preisinger, Franziska Liss, Alexandra Golzmann, Melanie Boerries, Kerstin Becker, Ruth Knüchel, Stefan Garczyk, Bernhard Lüscher   +11 more
wiley   +1 more source