Results 131 to 140 of about 5,216,810 (303)
β‐Catenin/c‐Myc Axis Modulates Autophagy Response to Different Ammonia Concentrations
Advanced Biology, Volume 9, Issue 3, March 2025.Ammonia, detoxified by the liver into urea and glutamine, impacts autophagy differently at varying levels. Low ammonia activates autophagy via c‐Myc and β‐catenin, while high levels suppress it. Using Huh7 cells and Spf‐ash mice, c‐Myc's role in cytoprotective autophagy is revealed, offering insights into hyperammonemia and potential therapeutic ...
S. Sergio +11 more
wiley +1 more source
Charge-transfer excited states using a constrained density functional method
, 2010 Growing interest in characterizing charge-transfer (CT) processes inherent in many chemical interactions, such as metal surface-adsorbate catalysis or light harvesting processes, has prompted a demand for practical electronic structure methods with ...
Olguin, Marco +2 more
core +1 more source
Statistical density of nuclear excited states
Ядерна фізика та енергетика, 2015 A semi-classical approximation is applied to the calculations of single-particle and statistical level densities in excited nuclei. Landau's conception of quasi-particles with the nucleon effective mass m* < m is used.
V. M. Kolomietz
doaj
Red electroluminescent Cu4I4 bipyramids with external quantum efficiency beyond 40%
Nature CommunicationsThe development of red cluster light-emitting devices (CLED) lags far behind blue and green congeners with respect to efficiencies, since multiple excited states of red cluster molecules are involved in non-radiation during electroluminescence.
Jie Ren +8 more
doaj +1 more source
Excited-State Spectra of Strongly Correlated Molecules from a Reduced-Density-Matrix Approach
, 2018 Excited-state energies are computed in the space of single-electron transitions from the ground state from only a knowledge of the two-electron reduced density matrix (2-RDM). Previous work developed and applied the theory to small molecular systems with
S. Hemmatiyan +7 more
core +1 more source
Advanced Engineering Materials, Volume 27, Issue 6, March 2025.ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur +5 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.A numerical–experimental framework is developed for characterizing multi‐matrix fiber‐reinforced polymers (MM‐FRPs) combining epoxy and polyurethane matrices. Harmonic bending tests are integrated with finite element model updating (FEMU) to simultaneously identify elastic and viscoelastic material parameters.
Rodrigo M. Dartora +4 more
wiley +1 more source
Morphology-Dependent Coherent Formation of Intrachain and Interchain States in Conjugated Copolymers
Ultrafast ScienceExcited states with diverse configurations are observed simultaneously upon optical pumping in many donor–acceptor copolymers, acting as precursor states for charge generation or as trap states in organic optoelectronic devices.
Qian Li +8 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal +2 more
wiley +1 more source