Results 31 to 40 of about 615,749 (292)
Landau Levels versus Hydrogen Atom
UniverseThe Landau problem and harmonic oscillator in the plane share a Hilbert space that carries the structure of Dirac’s remarkable so(2,3) representation.
Tekin Dereli +2 more
doaj +1 more source
rac-N-[Hydroxy(4-pyridyl)methyl]picolinamide: a hemiamidal
Acta Crystallographica Section E, 2010 The title compound, C12H11N3O2, a hemiamidal, was synthesized by solvent-free aldol condensation at room temperature by grinding picolinamide with isonicotinaldehyde in a 1:1 molar ratio.
Muhammad Altaf, Helen Stoeckli-Evans
doaj +1 more source
Perturbation hydrogen-atom spectrum in deformed space with minimal length
, 2006 We study energy spectrum for hydrogen atom with deformed Heisenberg algebra leading to minimal length. We develop correct perturbation theory free of divergences.
M. Abramowitz +2 more
core +1 more source
Cell wall target fragment discovery using a low‐cost, minimal fragment library
FEBS Letters, EarlyView.LoCoFrag100 is a fragment library made up of 100 different compounds. Similarity between the fragments is minimized and 10 different fragments are mixed into a single cocktail, which is soaked to protein crystals. These crystals are analysed by X‐ray crystallography, revealing the binding modes of the bound fragment ligands.
Kaizhou Yan +5 more
wiley +1 more source
3-(4-Chlorophenyl)-5-(4-fluorophenyl)-4,5-dihydro-1H-pyrazole-1-carbothioamide
Acta Crystallographica Section E, 2013 In the title compound, C16H13ClFN3S, the pyrazole ring adopts an envelope conformation with the methine C atom being the flap atom. The chloro- and fluorobenzene rings are twisted out of the plane of the pyrazole ring [dihedral angles = 15.12 (11 ...
Edward R. T. Tiekink +3 more
doaj +1 more source
, 2003 A spectroscopic application of the atom laser is suggested. The spectroscopy termed 2PACC employs the coherent properties of matter-waves from a two pulse atom laser. These waves are employed to control a gas-surface chemical recombination reaction.
Chikkatur A. P. +2 more
core +1 more source
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
Hydrogen/nitrogen/oxygen defect complexes in silicon from computational searches
, 2009 Point defect complexes in crystalline silicon composed of hydrogen, nitrogen, and oxygen atoms are studied within density-functional theory (DFT). Ab initio Random Structure Searching (AIRSS) is used to find low-energy defect structures.
Andrew J. Morris +3 more
core +1 more source
Tau acetylation at K331 has limited impact on tau pathology in vivo
FEBS Letters, EarlyView.We mapped tau post‐translational modifications in humanized MAPT knock‐in mice and in amyloid‐bearing double knock‐in mice. Acetylation within the repeat domain, particularly around K331, showed modest increases under amyloid pathology. To test functional relevance, we generated MAPTK331Q knock‐in mice.
Shoko Hashimoto +3 more
wiley +1 more source
4-Chloro-N-(pyrimidin-2-yl)aniline
Acta Crystallographica Section E, 2009 The two aromatic rings in the title compound, C10H8ClN3, open the angle at the planar N atom to 128.00 (12)°. The amino N atom of one molecule forms a hydrogen bond to the 1-N atom of an adjacent pyrimidyl ring, generating a hydrogen-bonded ...
A. Bakar Maizathul Akmam +2 more
doaj +1 more source