Results 61 to 70 of about 72,650 (303)

Scan path entropy and Arrow plots: Capturing scanning behavior of multiple observers

Frontiers in Psychology, 2013
Designers of visual communication material want their material to attract and retain attention. In marketing research, heat maps, dwell time, and time to AOI first hit are often used as evaluation parameters.
Ignace T C Hooge, Guido eCamps
doaj   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

A quantum solution to the arrow-of-time dilemma [PDF]

, 2008
The arrow of time dilemma: the laws of physics are invariant for time inversion, whereas the familiar phenomena we see everyday are not (i.e. entropy increases).
A. Peres, D. Z. Albert, D. Z. Albert, E. Borel, E. P. Gyftopoulos, F. Reif, H. Price, H. D. Zeh, J. Loschmidt, L. Szilard, L. S. Schulman, Lorenzo Maccone, P. C. W. Davies, R. Landauer, R. Penrose, T. Gold, W. H. Zurek   +16 more
core   +2 more sources

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

Time arrow without past hypothesis: a toy model explanation

New Journal of Physics
The laws of Physics are time-reversible, making no qualitative distinction between the past and the future—yet we can only go towards the future. This apparent contradiction is known as the ‘arrow of time problem’.
Pablo Arrighi, Gilles Dowek, Amélia Durbec   +2 more
doaj   +1 more source

Entropy Derived from Causality

Entropy, 2020
The second law of thermodynamics, with its positive change of entropy for a system not in equilibrium, defines an arrow of time. Interestingly, also, causality, which is the connection between a cause and an effect, requests a direction of time by ...
Roland Riek
doaj   +1 more source

Structural insights into lacto‐N‐biose I recognition by a family 32 carbohydrate‐binding module from Bifidobacterium bifidum

FEBS Letters, EarlyView.
Bifidobacterium bifidum establishes symbiosis with infants by metabolizing lacto‐N‐biose I (LNB) from human milk oligosaccharides (HMOs). The extracellular multidomain enzyme LnbB drives this process, releasing LNB via its catalytic glycoside hydrolase family 20 (GH20) lacto‐N‐biosidase domain.
Xinzhe Zhang, Naoki Sunagawa, Toma Kashima, Kiyohiko Igarashi, Akimasa Miyanaga, Shinya Fushinobu   +5 more
wiley   +1 more source

Quantum Theory of Irreversibility

, 2005
A generalization of the Gibbs-von Neumann relative entropy is proposed based on the quantum BBGKY [Bogolyubov-Born-Green-Kirkwood-Yvon] hierarchy as the nonequilibrium entropy for an N-body system.
A. Pérez-Madrid, Bedeaux, Boercker, Bogoliubov, de Groot, Dorfman, Pérez-Madrid, Reguera, Rondoni, Schlöglm, van Kampen, Vollmer, von Neumann, Wehrl, Zwanzig   +14 more
core   +2 more sources

Interplay between circadian and other transcription factors—Implications for cycling transcriptome reprogramming

FEBS Letters, EarlyView.
This perspective highlights emerging insights into how the circadian transcription factor CLOCK:BMAL1 regulates chromatin architecture, cooperates with other transcription factors, and coordinates enhancer dynamics. We propose an updated framework for how circadian transcription factors operate within dynamic and multifactorial chromatin landscapes ...
Xinyu Y. Nie, Jerome S. Menet
wiley   +1 more source

Fisher's arrow of `time' in cosmological coherent phase space

, 1998
Fisher's arrow of `time' in a cosmological phase space defined as in quantum optics (i.e., whose points are coherent states) is introduced as follows. Assuming that the phase space evolution of the universe starts from an initial squeezed cosmological ...
B. ROY FRIEDEN, Frieden B. R., Gasperini M., Grishchuk L., Grishchuk L. P., H. C. ROSU, Plastino A. R., Rothman T., Winitzki S., Zel’dovich Ya. B.   +9 more
core   +1 more source