Results 21 to 28 of about 40 (28)

Étude de l'effet d'inhibition du gel induit par les sulfates dans les nuages arctiques à l'aide des mesures satellitaires de CloudSat et CALIPSO [PDF]

open access: yes, 2010
Les sulfates issus de la pollution industrielle d'Eurasie et transportés à travers la basse troposphère arctique durant l'hiver sont soupçonnés d'altérer les propriétés des nuages au point d'affecter significativement le climat de cette région.
Grenier, Patrick
core  

Strengthening health systems through eHealth: two mixed-methods case studies at 10 facilities in Malawi [PDF]

open access: yes, 2018
Background International agencies such as the World Health Organisation have highlighted the potential of digital information and communications technologies to strengthen health systems, which are underpinned by the ‘building blocks’ of information ...
Kawale, Paul
core   +2 more sources

Asymmetric organocatalytic synthesis of γ-nitrocarbonyl compounds through Michael and Domino reactions

open access: yes, 2012
Recent advances in the organocatalytic enantioselective synthesis of γ-nitrocarbonyl compounds through Michael additions of either nitroalkanes to α,β-unsaturated carbonyl derivatives or enolizable carbonyl compounds to nitroalkenes are surveyed.
Roca-López, David   +5 more
core   +1 more source

Uncatalyzed Three-Component Synthesis of α-Hydrazido Phosphonates

open access: yes, 2010
5 páginas, 2 figuras, 3 tablas, 2 esquemas.Various α-hydrazido phosphonates have been easily prepared on the basis of the nucleophilic addition of diphenyl phosphite to reactive, preformed N-acylhydrazones and a three-component (aldehydes, N ...
Pudovik   +49 more
core   +1 more source

Asymmetric organocatalysis in total synthesis – a trial by fire  

open access: yes, 2012
This review covers the most recent applications of organocatalysis in the synthesis of natural products and non-natural biologically active molecules. Our aim is to showcase how organocatalytic reactions have overcome some of their teething problems and ...
Christmann, Mathias   +2 more
core   +2 more sources

Enantioselective α-and γ-alkylation of α,β- unsaturated aldehydes using dienamine activation

open access: yes, 2012
The enantioselective alkylation of α,β-unsaturated aldehydes with stabilized carbocations as electrophiles via the activation as dienamine intermediates is described.
Christmann, Mathias   +3 more
core   +2 more sources

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