Results 91 to 100 of about 663,607 (334)

Using the Noether symmetry approach to probe the nature of dark energy

, 2011
We propose to use a model-independent criterion based on first integrals of motion, due to Noether symmetries of the equations of motion, in order to classify the dark energy models in the context of scalar field (quintessence or phantom) FLRW ...
A. D. Dolgov, A. V. Aminova, Andronikos Paliathanasis, C. Wetterich, G. Bluman, H. Stephani, L. Amendola, Michael Tsamparlis, P. J. Olver, P. J. Steinhardt, S. Capozziello, Spyros Basilakos   +11 more
core   +1 more source

Redox‐dependent binding and conformational equilibria govern the fluorescence decay of NAD(P)H in living cells

FEBS Letters, EarlyView.
In this work, we reveal how different enzyme binding configurations influence the fluorescence decay of NAD(P)H in live cells using time‐resolved anisotropy imaging and fluorescence lifetime imaging microscopy (FLIM). Mathematical modelling shows that the redox states of the NAD and NADP pools govern these configurations, shaping their fluorescence ...
Thomas S. Blacker, Nimit Mistry, Nicoletta Plotegher, Elizabeth R. Westbrook, Michael D. E. Sewell, John Carroll, Gyorgy Szabadkai, Angus J. Bain, Michael R. Duchen   +8 more
wiley   +1 more source

Toy models for gravitational and scalar QED decoherence

, 2020
We investigate the dynamics of two quantum mechanical oscillator system-bath toy models obtained by dimensionally truncating linearized gravity coupled to a massive scalar field and scalar QED.
Blencowe, M. P., Xu, Qidong
core  

Dynamics of Scalar field in a Brane World

, 2002
We study the dynamics of a scalar field in the brane cosmology. We assume that a scalar field is confined in our 4-dimensional world. As for the potential of the scalar field, we discuss three typical models: (1) a power-law potential, (2) an inverse ...
A. Mazumdar, A. R. Liddle, A. S. Majumdar, A. Vilenkin, B. Ratra, B. Spokoiny, B. Whitt, C. Csaki, D. Langlois, D. Wands, E. J. Copeland, E. J. Copeland, F. Lucchin, G. Huey, I. Antoniadis, I. Zlatev, J. D. Barrow, J. Khoury, J. M. Cline, J. Preskill, K. Maeda, K. Maeda, Kei-ichi Maeda, Kohta Yamamoto, L. H. Ford, L. Mendes, L. P. Grishchuk, L. Randall, L. Randall, N. Arkani-Hamed, N. Goheer, N. Kaloper, P. Binétruy, P. Binétruy, P. Hořava, P. Hořava, P. J. Steinhardt, P. Kanti, R. M. Hawkins, R. Maatens, R. R. Caldwell, S. C. Davis, S. Mizuno, S. Mukohyama, S. Tsujikawa, Shuntaro Mizuno, T. Nihei, T. Shiromizu, T. W. B. Kibble, V. A. Rubakov, V. Sahni, Y. Shtanov   +51 more
core   +1 more source

Exploring lipid diversity and minimalism to define membrane requirements for synthetic cells

FEBS Letters, EarlyView.
Designing the lipid membrane of synthetic cells is a complex task, in which its various roles (among them solute transport, membrane protein support, and self‐replication) should all be integrated. In this review, we report the latest top‐down and bottom‐up advances and discuss compatibility and complexity issues of current engineering approaches ...
Sergiy Gan, Victoria Scarpelli, Marten Exterkate   +2 more
wiley   +1 more source

Real scalar fields on manifolds [PDF]

Journal of Physics A: Mathematical and Theoretical, 2008
A generic theory of a single real scalar field is considered, and a simple method is presented for obtaining a class of solutions to the equation of motion. These solutions are obtained from a simpler equation of motion that is generated by replacing a set of the original coordinates by a set of generalized coordinates, which are harmonic functions in ...
openaire   +3 more sources

Entropic quantization of scalar fields [PDF]

AIP Conference Proceedings, 2015
10 pages. Presented at MaxEnt 2014, the 34th International Workshop on Bayesian Inference and Maximum Entropy Methods in Science and Engineering (September 21--26, 2014, Amboise, France)
Ariel Caticha, Selman Ipek
openaire   +4 more sources

C‐mannosylation promotes ADAMTS1 activation and secretion in human testicular germ cell tumor NEC8 cells

FEBS Letters, EarlyView.
C‐mannosylation is a unique form of protein glycosylation. In this study, we demonstrated that ADAMTS1 is C‐mannosylated at Trp562 and Trp565 in human testicular germ cell tumor NEC8 cells. We found that C‐mannosylation of ADAMTS1 is essential for its secretion, processing, enzymatic activity, and ability to promote vasculogenic mimicry. These findings
Takato Kobayashi, Takehiro Suzuki, Ryota Kawahara, Natsumi Harai, Naoshi Dohmae, Siro Simizu   +5 more
wiley   +1 more source

Bulk scalar field in DGP braneworld cosmology

, 2007
We investigated the effects of bulk scalar field in the braneworld cosmological scenario. The Friedmann equations and acceleration condition in presence of the bulk scalar field for a zero tension brane and cosmological constant are studied. In DGP model
Aoyanagi H, Brax P, Davis S C, Israel W, P K Suresh, Rizwan ul Haq Ansari   +5 more
core   +1 more source

Microbial exopolysaccharide production by polyextremophiles in the adaptation to multiple extremes

FEBS Letters, EarlyView.
Polyextremophiles are microorganisms that endure multiple extreme conditions by various adaptation strategies that also include the production of exopolysaccharides (EPSs). This review provides an integrated perspective on EPS biosynthesis, function, and regulation in these organisms, emphasizing their critical role in survival and highlighting their ...
Tracey M Gloster, Ebru Toksoy Öner
wiley   +1 more source