Results 11 to 20 of about 1,001,244 (346)

δ-Small Submodules and δ-Supplemented Modules [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2007
Let R be a ring and M a right R-module. It is shown that (1) δ(M) is Noetherian if and only if M satisfies ACC on δ-small submodules; (2) δ(M) is Artinian if and only if M satisfies DCC on δ-small submodules; (3) M is Artinian if and only if M is an ...
Yongduo Wang
doaj   +2 more sources

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   +1 more source

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

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

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

Methylglyoxal with glycine or succinate enhances differentiation and shoot morphogenesis in Nicotiana tabacum callus

open access: yesBiologia Plantarum, 2013
The aim of this study was to evaluate the influence of methylglyoxal (MG) on organogenesis and regeneration of tobacco (Nicotiana tabacum L.) plants from callus in media containing glycine or succinate.
A. Ray, S. Ray, S. Mukhopadhyay, M. Ray
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

Preparation of optically pure δ-lactones using diastereomeric resolution with amino acid as resolving agent [PDF]

open access: yes, 2015
Synthesis of optically pure δ-lactones by diastereomeric resolution was investigated. Amino acid derivatives, which can be obtained at a relatively low cost, were used as resolving agents.
Shimotori, Yasutaka   +6 more
core   +1 more source

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