Results 101 to 110 of about 3,340,845 (318)
Strongly Bound Frenkel Excitons on TiO2 Nanoparticles: An Evolutionary and DFT Approach
International Journal of PhotoenergyAn evolutionary algorithm was employed to locate the global minimum of TiO2n nanoparticles with n=2–20. More than 61,000 structures were calculated with a semiempirical method and reoptimized using density functional theory. The exciton binding energy of
Oscar Olvera-Neria +5 more
doaj +1 more source
Symmetric ground states for a stationary relativistic mean-field model for nucleons in the nonrelativistic limit [PDF]
, 2012 In this paper we consider a model for a nucleon interacting with the $\omega$ and $\sigma$ mesons in the atomic nucleus. The model is relativistic, but we study it in the nuclear physics nonrelativistic limit, which is of a very different nature from the
Esteban, Maria J., Nodari, Simona Rota
core +3 more sources
Understanding and measuring mechanical signals in the tumor stroma
FEBS Open Bio, EarlyView.This review discusses cancer‐associated fibroblast subtypes and their functions, particularly in relation to extracellular matrix production, as well as the development of 3D models to study tumor stroma mechanics in vitro. Several quantitative techniques to measure tissue mechanical properties are also described, to emphasize the diagnostic and ...
Fàtima de la Jara Ortiz +3 more
wiley +1 more source
3D printed magnets for neutron spin manipulation [PDF]
EPJ Web of Conferences, 2019 Devices for manipulation of the neutron spin are vital for experiments in neutron optics such as neutron interferometry. Here we introduce a new type of such devices which are based on a magnetic material that can be 3D printed in complex shapes. We have
Wagner Richard +7 more
doaj +1 more source
On the origin of quantum mechanics
, 2005 Action at distance in Newtonian physics is replaced by finite propagation speeds in classical post--Newtonian physics. As a result, the differential equations of motion in Newtonian physics are replaced by functional differential equations, where the ...
Bohr +38 more
core +1 more source
From the Mendeleev periodic table to particle physics and back to the periodic table [PDF]
, 2006 We briefly describe in this paper the passage from Mendeleev's chemistry (1869) to atomic physics (in the 1900's), nuclear physics (in the 1932's) and particle physics (from 1953 to 2006).
A.O. Barut +19 more
core +6 more sources
Introduction to light forces, atom cooling, and atom trapping [PDF]
, 1995 This paper introduces and reviews light forces, atom cooling and atom trapping. The emphasis is on the physics of the basic processes. In discussing conservative forces the semi-classical dressed states are used rather than the usual quantized field dressed states.
arxiv +1 more source
Colloquium: Atomic quantum gases in periodically driven optical lattices [PDF]
, 2016 Dynamics of quantum many-body systems is one of the most complex problems in physics since it involves the time evolution of a large number of particles that interact with each other under the influence of external forces. With ultracold atoms in optical
A. Eckardt
semanticscholar +1 more source
FEBS Open Bio, EarlyView.We investigated a potential protective effect of acacetin, a naturally occurring flavonoid, against methylglyoxal (MGO)‐induced endothelial dysfunction in human umbilical vein endothelial cells and its mechanism of action. Acacetin can could inhibit MGO‐induced intracellular calcium ion influx, enhance the expression levels of phosphorylated ...
Zhen Zhang +7 more
wiley +1 more source
Heliyon, 2018 The effect of a low-energy germanium detector collimator with different diameters on the measurement of the X-ray fluorescence of palladium (Pd) was studied experimentally.
Mohammad W. Marashdeh
doaj