Results 1 to 10 of about 1,027,593 (241)

THE UREA DEARRANGEMENT [PDF]

open access: yesJournal of the American Chemical Society, 1922
n ...
Davis, Tenney L., Underwood, H. W.
openaire   +3 more sources

N-Sulfinylpyrrolidine-containing ureas and thioureas as bifunctional organocatalysts

open access: yesBeilstein Journal of Organic Chemistry, 2021
The synthesis of bifunctional N-sulfinylureas and thioureas with an appended pyrrolidine unit is presented. These organocatalysts were evaluated in Michael additions of aldehydes to nitroalkenes both under solvent-free conditions and in solution.
Viera Poláčková   +5 more
doaj   +1 more source

Preparation of High-Performance Enteromorpha Prolifera–Based Porous Carbons by Nitrogen Modification and Their Electrochemical Performance

open access: yesFrontiers in Energy Research, 2021
This study presents a novel method to improve the electrochemical performance of porous carbons (PCs) by simply adjusting the elemental composition of their precursors with nitrogen-rich materials as additives.
Ming Li   +5 more
doaj   +1 more source

Anion Binding Studies of Urea and Thiourea Functionalized Molecular Clefts

open access: yesFrontiers in Chemistry, 2021
Two rationally designed 4-nitrophenyl-based molecular clefts functionalized with thiourea (L1) and urea (L2) have been synthesized and studied for a variety of anions by UV-Vis and colorimetric techniques in DMSO. Results from the binding studies suggest
Utsab Manna   +4 more
doaj   +1 more source

Islamic stock markets and potential diversification benefits

open access: yesBorsa Istanbul Review, 2015
The aim of this paper is to investigate whether the dynamic integration across a large set of developed and emerging Islamic stock markets allows potential diversification benefits in tranquil and turmoil periods.
Mouna Boujelbène Abbes   +1 more
doaj   +1 more source

The Impact of Teachers’ Communication Styles on Pupils’ Self- safety Throughout the Learning Process [PDF]

open access: yes, 2013
Over the last decade, numerous research studies have revealed the multiple roles a teacher must implement: trainer, communicator, developer and shaper of students’ personalities, counsellor, and provider of secure learning environments for students, etc.
Urea, Roxana
core   +1 more source

"The formation of urea" [PDF]

open access: yesExperimental Biology and Medicine, 1904
n ...
Stookey, L. B., Granger, A. S.
openaire   +3 more sources

Atomic scale insights into urea–peptide interactions in solution [PDF]

open access: yes, 2016
The mechanism by which proteins are denatured by urea is still not well understood, especially on the atomic scale where these interactions occur in vivo.
Gillams, Richard J.   +4 more
core   +3 more sources

La literatura de tradición oral en la provincia de Jaén

open access: yesBoletín de Literatura Oral, 2017
This article offers a review of the main contributions to fieldwork, documentation and other related topics on the Jaen’s (Spain) oral literature, from the earliest attested examples to the present.
Marta Urea Herrador
doaj   +1 more source

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