Results 41 to 50 of about 1,727,151 (295)
Contribution of Orbital Angular Momentum to the Nucleon Spin
, 2017 We have calculated the Orbital Angular Momentum of quarks and gluons in the nucleon. The calculations are carried out in the next to leading order utilizing the so-called valon model.
Arash, Firooz +3 more
core +1 more source
Il Nuovo Cimento, 1960 The theorem for distributions in the angles θ, ϕ is extended to the third Euler angle, ϕ, whereupon it becomes equivalent to the rotational invariance of the responsible interactions. An interpretation of half-angle terms in the general rate formula is given.
openaire +2 more sources
Structural biology of ferritin nanocages
FEBS Letters, EarlyView.Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley +1 more source
Angular momentum of a strongly focussed Gaussian beam [PDF]
, 2004 A circularly polarized rotationally symmetric paraxial laser beams carries hbar angular momentum per photon as spin. Focussing the beam with a rotationally symmetric lens cannot change this angular momentum flux, yet the focussed beam must have spin less
Heckenberg, Norman R. +2 more
core +1 more source
On the transformations generated by the electromagnetic spin and orbital angular momentum operators
, 2014 We present a study of the properties of the transversal "spin angular momentum" and "orbital angular momentum" operators. We show that the "spin angular momentum" operators are generators of spatial translations which depend on helicity and frequency and
Fernandez-Corbaton, Ivan +2 more
core +1 more source
Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system
FEBS Letters, EarlyView.Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley +1 more source
Disegnare con, 2012 A piece of architecture can be investigated in search of a geometrical model which explanes the rules of its nature and the way they become real in the act of building. Some topics often arise and the answers proposed by architects in various periods let
Mario Manganaro
doaj +1 more source
Ultra-compact radio sources: angular-size/redshift data [PDF]
, 2013 A compilation of angular-size/redshift data for ultra-compact radio sources is presented, which data derive from a 2.29 GHz VLBI survey undertaken by Preston et al. The sample has formed the basis of a number of investigations, which attempt to determine
Jackson, John, Jannetta, Adrian
core
Self-organization and symmetry-breaking in two-dimensional plasma turbulence [PDF]
, 2010 The spontaneous self-organization of two-dimensional magnetized plasma is investigated within the framework of magnetohydrodynamics with a particular emphasis on the symmetry-breaking induced by the shape of the confining boundaries.
Bos, Wouter +2 more
core +3 more sources
AAA+ protein unfoldases—the Moirai of the proteome
FEBS Letters, EarlyView.AAA+ unfoldases are essential molecular motors that power protein degradation and disaggregation. This review integrates recent cryo‐electron microscopy (cryo‐EM) structures and single‐molecule biophysical data to reconcile competing models of substrate translocation.
Stavros Azinas, Marta Carroni
wiley +1 more source