Results 71 to 80 of about 524,795 (331)
Is Small Perfect? Size Limit to Defect Formation in Pyramidal Pt Nanocontacts [PDF]
, 2007 We report high resolution transmission electron microscopy and ab initio calculation results for the defect formation in Pt nanocontacts (NCs). Our results show that there is a size limit to the existence of twins (extended structural defects).
D. S. Galvão +5 more
core +3 more sources
Chondrocyte Differentiation of Human Endometrial Gland-Derived MSCs in Layered Cell Sheets
The Scientific World Journal, 2013 Recently, regenerative medicine using engineered three-dimensional (3D) tissues has been focused. In the fields of cell therapy and regenerative medicine, mesenchymal stem cells (MSCs) are attractive autologous cell sources.
Waki Sekine +5 more
doaj +1 more source
Sodium doping in brookite TiO2 enhances its photocatalytic activity
Beilstein Journal of Nanotechnology, 2022 We report in this work that sodium doping of brookite TiO2 effectively enhances its photocatalytic activity, which becomes three times higher than that of the quasi-spherical brookite TiO2.
Boxiang Zhuang +3 more
doaj +1 more source
A stepwise emergence of evolution in the RNA world
FEBS Letters, EarlyView.How did biological evolution emerge from chemical reactions? This perspective proposes a gradual scenario of self‐organization among RNA molecules, where catalytic feedback on random mixtures plays the central role. Short oligomers cross‐ligate, and self‐assembly enables heritable variations. An event of template‐externalization marks the transition to
Philippe Nghe
wiley +1 more source
, 2005 This tale treats competition within the family and, in particular, betrayal among brothers. It explores the contradiction inherent in peer-relationships within the family: siblings from the same mother/parentage (here epitomized by twins) are ...
Merolla, Daniela
core
The twin paradox in compact spaces [PDF]
, 2001 Twins travelling at constant relative velocity will each see the other's time dilate leading to the apparent paradox that each twin believes the other ages more slowly.
D. Stevens +10 more
core +2 more sources
Erratum: Neuroblastoma in monozygotic twins – a case of probable twin to twin metastasis [PDF]
British Journal of Cancer, 2001 Concordance for neuroblastoma in monozygotic twins has been reported only rarely, and the cause of the shared pathology has not been established. We describe a case of infant monozygotic twins developing tumours that were morphologically, clinically and molecularly indistinguishable, but with a delay of 6 months between times of presentation.
Tony Gordon +5 more
openaire +3 more sources
FEBS Letters, EarlyView.The enzyme 5‐lipoxygenase (5‐LOX) catalyzes the first step in the biosynthesis of leukotrienes (LTs) involved in inflammatory pathophysiology. After cellular stimulation, 5‐LOX translocates to the nucleus, interacting with the 5‐LOX‐activating protein (FLAP) to form LTA4 from arachidonic acid (AA).
Erik Romp +5 more
wiley +1 more source
Probing dense matter in neutron stars with axial w-modes [PDF]
, 2009 We study the problem of extracting information about composition and equation of state of dense matter in neutron star interior using axial w-modes. We determine complex frequencies of axial w-modes for a set of equations of state involving hyperons as ...
Debades Bandyopadhyay +4 more
core +1 more source