Results 51 to 60 of about 1,135,168 (297)

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

Predicting Nuclear Level Density Using a Physics-Informed Neural Network with Multi-Task Learning

Applied Sciences
The accurate determination of nuclear level density (NLD) is essential for a wide range of applications in nuclear science, including reactor design, nuclear astrophysics, and nuclear data evaluation.
Bora Canbula
doaj   +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

Chromatin phase separation and nuclear shape fluctuations are correlated in a polymer model of the nucleus

Nucleus
Abnormal cell nuclear shapes are hallmarks of diseases, including progeria, muscular dystrophy, and many cancers. Experiments have shown that disruption of heterochromatin and increases in euchromatin lead to nuclear deformations, such as blebs and ...
Ali Goktug Attar, Jaroslaw Paturej, Edward J. Banigan, Aykut Erbaş   +3 more
doaj   +1 more source

Alveolar Bone Density Reduction in Rats Caused by Unilateral Nasal Obstruction

Balkan Medical Journal, 2019
Background: Oral breathing can cause morphological changes in the oral and maxillofacial regions. Aims: To investigate whether oral breathing affected structural changes in bone tissues. Study Design: Animal experimentation.
Xue Wang, Yongge Cao, Zhenhua Liu, Zihan Wang, Xiaoying Chu, Lei Wang, Xuanxuan Hu, Han Zhao, Zhanqiu Diao, Fengting Peng, Hui Ye, Zhensheng Cao   +11 more
doaj   +1 more source

Nuclear symmetry energy and its density slope at normal density extracted from global nucleon optical potentials

, 2010
Based on the Hugenholtz-Van Hove theorem, it is shown that both the symmetry energy E$_{sym}(\rho)$ and its density slope $L(\rho)$ at normal density $\rho_0$ are completely determined by the global nucleon optical potentials that can be extracted ...
B. A. Li, Bao-An Li, C. Mahaux, Chang Xu, J. Dabrowski, Lie-Wen Chen, P. E. Hodgson   +6 more
core   +1 more source

The accretion mechanism in low-power radio galaxies [PDF]

, 2008
We study a sample of 44 low-luminosity radio-loud AGN, which represent a range of nuclear radio-power spanning 5 orders of magnitude, to unveil the accretion mechanism in these galaxies.
A. Capetti, Allen, Auriemma, B. Balmaverde, Balmaverde, Balmaverde, Bennett, Best, Best, Binney, Blandford, Blanton, Boehringer, Bondi, Burns, Bîrzan, Capetti, Capetti, Chiaberge, Churazov, de Ruiter, Di Matteo, Diehl, Donzelli, Fabian, Forman, Giovannini, Gliozzi, Hardcastle, Heinz, Isobe, Kraft, Kriss, Lasota, Lauer, Loewenstein, Marconi, Marconi, Mauch, Narayan, Nusser, Pellegrini, Quataert, R. D. Baldi, Rawlings, Smith, Tremaine, Valentijn, Willott, Zanni   +49 more
core   +1 more source

Self-consistent description of nuclear level densities

Nuclear Physics A, 1981
Abstract We present a self-consistent calculation of the nuclear level density based on a generalization to finite temperature of a modified Thomas-Fermi method. A simple expression is derived for the so-called level density parameter a entering the expression of the density of states ρ(E) = E − 5 4 exp [2√aE] and relating the excitation
Division de Physique Théorique ∗ ∗ Laboratoire associé au CNRS. , Institut de Physique Nucléaire, F-91406 Orsay Cedex, France ( host institution ), Barranco, M. ( author ), Treiner, J. ( author )   +2 more
openaire   +2 more sources

Microscopic calculation of symmetry projected nuclear level densities [PDF]

Physical Review C, 2009
We present a quantum Monte Carlo method with exact projection on parity and angular momentum that is free of sign-problems for seniority-conserving nuclear interactions. This technique allows a microscopic calculation of angular momentum and parity projected nuclear level densities. We present results for the $^{55}$Fe, $^{56}$Fe and $^{57}$Fe isotopes.
Van Houcke,, K., Rombouts, Stefan M. A., Heyde,, K., Alhassid, Y.   +3 more
openaire   +4 more sources

Reciprocal control of viral infection and phosphoinositide dynamics

FEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source