Results 91 to 100 of about 6,563,661 (318)
Mathematical Structure of Loop Quantum Cosmology: Homogeneous Models
Symmetry, Integrability and Geometry: Methods and Applications, 2013 The mathematical structure of homogeneous loop quantum cosmology is analyzed, starting with and taking into account the general classification of homogeneous connections not restricted to be Abelian.
Martin Bojowald
doaj +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
FEBS Letters, EarlyView.This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel +13 more
wiley +1 more source
SHIELDING OF A UNIFORM ALTERNATING MAGNETIC FIELD USING A CIRCULAR PASSIVE LOOP
Electrical engineering & Electromechanics, 2015 The magnetic and electromagnetic shields are used to reduce the magnetic field in local spaces. Usually these shields are implemented in the form of a box or a cylinder.
V. S. Grinchenko, K. V. Chunikhin
doaj
Hamiltonian Loop Group Actions and T-Duality for group manifolds
, 2004 We carry out a Hamiltonian analysis of Poisson-Lie T-duality based on the loop geometry of the underlying phases spaces of the dual sigma and WZW models.
A. Cabrera +40 more
core +1 more source
Loop space homology of spaces of small category [PDF]
Transactions of the American Mathematical Society, 1993 Only little is known concerning H ∗ ( Ω X ; k ) {H_\ast }(\Omega X;{\mathbf {k}}) , the loop space homology of a finite CW {\text {CW}} complex X X with ...
Félix, Yves, Thomas, Jean-Claude
openaire +1 more source
Diversity and complexity in neural organoids
FEBS Letters, EarlyView.Neural organoid research aims to expand genetic diversity on one side and increase tissue complexity on the other. Chimeroids integrate multiple donor genomes within single organoids. Self‐organising multi‐identity organoids, exogenous cell seeding, or enforced assembly of region‐specific organoids contribute to tissue complexity.
Ilaria Chiaradia, Madeline A. Lancaster
wiley +1 more source
A spectral sequence for the Hochschild cohomology of a coconnective dga
, 2012 A spectral sequence for the computation of the Hochschild cohomology of a coconnective dga over a field is presented. This spectral sequence has a similar flavour to the spectral sequence constructed by Cohen, Jones and Yan for the computation of the ...
Shamir, Shoham
core +1 more source
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
The loop space of the $Q$-construction
Illinois Journal of Mathematics, 1987 Quillen's Q-construction associates to an exact category M a new category QM, and the \((i+1)st\) homotopy group of \(| QM|\) is the ith algebraic K-group, \(K_ iM\). In this paper the authors provide us with a simplicial set GM which is homotopy-equivalent to the loop space of \(| QM|\); thus \(K_ iM=\pi_ i| GM|\).
Gillet, Henri, Grayson, Daniel R.
openaire +3 more sources