Results 71 to 80 of about 1,533,087 (281)

The arrow of time: from universe time-asymmetry to local irreversible processes

, 2007
In several previous papers we have argued for a global and non-entropic approach to the problem of the arrow of time, according to which the ''arrow'' is only a metaphorical way of expressing the geometrical time-asymmetry of the universe.
A. Bohm, A. Bohm, A. Bohm, A. Bohm, A. Bohm, A. Grünbaum, B.F. Schutz, D. Albert, H. Price, H. Reichenbach, J. Earman, J. Earman, J.P. Paz, K. Huang, L. Boltzmann, L. Sklar, M. Castagnino, M. Castagnino, M. Castagnino, M. Castagnino, M. Castagnino, M. Castagnino, M. Castagnino, M. Castagnino, M. Castagnino, M. Tabor, M. Visser, Mario Castagnino, Matías Aiello, N. Birrell, N. Bogoliubov, O. Penrose, Olimpia Lombardi, P. Ehrenfest, P. Roman, P.C. Davies, P.C. Davies, P.D. Lax, P.R. Levstein, R. Balliant, R. Caldwell, R. Haag, R. Penrose, R.G. Sachs, R.P. Feynman, S. Brush, S. Hawking, S. Weinberg, S. Weinberg   +48 more
core   +1 more source

Time's arrow and pupillary response [PDF]

Psychophysiology, 2005
AbstractThe psychological arrow of time refers to our experience of the forward temporal progression of all natural processes. To investigate whether and how time's arrow is mentally coded in individual everyday events, a relatedness judgment task was used. The items each consisted of a verb (probe) and an adjective or participle (target). The temporal
Nuthmann, A, van der Meer, Elke E.
openaire   +3 more sources

Thermodynamic optimization in laminar and fully developed flow in double pipe heat exchanger with arrow-shaped extended surfaces: A novel design

Case Studies in Thermal Engineering
An innovative design of extended fins in the form of arrow fins is optimized for high performance heat transfer in a double pipe heat exchanger (DPHX).
Ghazala Ashraf, Sardar Bilal, Muhammad Ishaq, Syed Khalid Saifullah, A.S. Alqahtani, M.Y. Malik   +5 more
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

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

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

FEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi, Pilar Samperio Ventayol, Natalie Burkard, Nicolas Schlegel, Carmen Aguilar, Sina Bartfeld   +5 more
wiley   +1 more source

The Quantum Mechanical Arrows of Time

, 2013
The familiar textbook quantum mechanics of laboratory measurements incorporates a quantum mechanical arrow of time --- the direction in time in which state vector reduction operates.
B. Basu, C.J. Isham, E. Wigner, F. Hoyle, H. Price, H.J. Groenewold, J. Neumann von, J.B. Hartle, J.B. Hartle, J.B. Hartle, J.B. Hartle, J.B. Hartle, J.B. Hartle, J.B. Hartle, J.B. Hartle, J.B. Hartle, L. Boltzmann, M. Gell-Mann, M. Gell-Mann, M. Gell-Mann, R. Laflamme, R. Omnès, R.B. Griffiths, S.W. Hawking, S.W. Hawking, W.J. Cocke, Y. Aharonov, Y. Aharonov, Y. Aharonov   +28 more
core   +1 more source

The arrow of time

The Astrophysical Journal, 1975
A model of the universe which resolves the apparent contradiction between the historical and the thermodynamic arrows of time is presented. Both arrows are reconciled with the almost time-symmetric character of physical laws at the microscopic level. The theory implies that the universe is unfolding in time but not unraveling. (BJG)
openaire   +1 more source

The Universal Arrow of Time [PDF]

Foundations of Physics, 2012
Statistical physics cannot explain why a thermodynamic arrow of time exists, unless one postulates very special and unnatural initial conditions. Yet, we argue that statistical physics can explain why the thermodynamic arrow of time is universal, i.e., why the arrow points in the same direction everywhere.
Kupervasser, Oleg, Nikolić, Hrvoje, Zlatić, Vinko   +2 more
openaire   +3 more sources

Organoids in pediatric cancer research

FEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source