Results 11 to 20 of about 725,304 (294)

Schrödinger operators with δ and δ′-potentials supported on hypersurfaces [PDF]

open access: yes, 2013
Self-adjoint Schrödinger operators with δ and δ′-potentials supported on a smooth compact hypersurface are defined explicitly via boundary conditions.
Lotoreichik, Vladimir   +2 more
core   +4 more sources

Intermediate temperature SOFC single cell test using Nd1.95NiO4+δ as cathode [PDF]

open access: yes, 2007
This work deals with SOFC single cell tests using neodymium nickelate Nd1.95NiO4+δ as cathode material. This MIEC oxide exhibits high values of both surface exchange coefficient (k) and oxygen diffusion coefficient (D*), as well as high electronic ...
Ansart, Florence   +11 more
core   +1 more source

Internal friction investigation of phase transformation in nearly stoichiometric LaMnO3+δ [PDF]

open access: yes, 2005
Rhombohedral LaMnO3+δ powders, prepared by two different soft chemistry routes (co-precipitation and hydrothermal synthesis), are sintered at 1400 °C for 2 h in air. Measurements of internal friction Q−1(T) and shear modulus G(T), at low frequencies from
Calmet, Christophe   +7 more
core   +1 more source

Structural, electrochemical and magnetic characterization of the layered-type PrBa0.5Sr0.5Co2O5+δ perovskite [PDF]

open access: yes, 2014
Structural, electrical and magnetic properties of the layered cobaltite PrBa0.5Sr0.5Co2O5+δ have been investigated by means of neutron diffraction, electron diffraction, thermogravimetric analysis and SQUID magnetometry.
Irvine, John T.S.   +8 more
core   +1 more source

Quantum critical Eliashberg theory, the Sachdev-Ye-Kitaev superconductor and their holographic duals

open access: yesnpj Quantum Materials, 2022
Superconductivity is abundant near quantum critical points, where fluctuations suppress the formation of Fermi liquid quasiparticles and the BCS theory no longer applies.
Gian-Andrea Inkof   +2 more
doaj   +1 more source

Sum connectedness in proximity spaces

open access: yesApplied General Topology, 2021
The notion of sum δ-connected proximity spaces which contain the category of δ-connected and locally δ-connected spaces is defined. Several characterizations of it are substantiated. Weaker forms of sum δ-connectedness are also studied.
Beenu Singh, Davinder Singh
doaj   +1 more source

Carbon nutrition of mature green orchid Serapias strictiflora and its mycorrhizal fungus Epulorhiza sp.

open access: yesBiologia Plantarum, 2010
We studied the nutritional modes of the orchid Serapias strictiflora and its mycorrhizal fungus Epulorhiza sp. using the differences in carbon isotopic composition (δ13C) of C3 orchid and C4 maize tissues. We found that if cultivated in substrate lacking
K. Látalová, M. Baláž
doaj   +1 more source

Βιβλιοπαρουσίαση: "Δεσμός, συναίσθημα και διαπροσωπικές σχέσεις" (2005)

open access: yesΨυχολογία: το Περιοδικό της Ελληνικής Ψυχολογικής Εταιρείας, 2020
ΔΕΝ ΔΙΑΤΙΘΕΤΑΙ ...
Γεώργιος Δ. Σιδερίδης
doaj   +1 more source

Transgenic barley producing essential polyunsaturated fatty acids

open access: yesBiologia Plantarum, 2014
Polyunsaturated fatty acids (PUFAs) affect diverse physiological processes and human health. Most cereals are poor in n-3 and n-6 PUFAs. Using biolistics, barley (Hordeum vulgare L. cv.
D. Mihálik   +10 more
doaj   +1 more source

Preparation of Optically Active δ-Tri- and δ-Tetradecalactones by a Combination of Novozym 435-catalyzed Enantioselective Methanolysis and Amidation [PDF]

open access: yes, 2015
A combination of Novozym 435-catalyzed methanolysis and amidation using racemic N-methyl-5-acetoxytridecan- and tetradecanamides as a substrate proceeded in good enantioselectivity to afford the corresponding (R)-N-methyl-5-acetoxyalkanamides, (S)-N ...
Shimotori, Yasutaka   +3 more
core   +1 more source

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