Results 71 to 80 of about 11,793 (168)
TAXON, Volume 74, Issue 1, Page 133-154, February 2025.Abstract Phylogenetic relationships in the South African daisy genus Dimorphotheca have long been uncertain, with the taxonomy of the genus relying on a few morphological traits, most prominently capitulum sexual system (e.g., cypsela type) and ray colour, which may not be evolutionarily conserved.
Thaabiet Parker +4 more
wiley +1 more source
La fortificació de Catalunya: la introducció de les noves teories europees sobre el bastió (1675-1733) [PDF]
, 1998 -
Vivar Lombarte, Gustavo
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Fortification and Frontier: The Project Drawn up by Juan Martín Zermeño for Puebla de Sanabria in 1766 [PDF]
, 2017 Following the death of engineer General Jorge Próspero de Verboom in 1744 and after a few years of transition in the management of Spanish fortifications, Juan Martín Zermeño took on the role, initially with a temporary mandate, but then definitively ...
Echarri-Iribarren, Víctor
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Beilstein Journal of Organic Chemistry, 2013 Polystyrene sulfonate polymer brushes, grown on the interior of the microchannels in a microreactor, have been used for the anchoring of gallium as a Lewis acid catalyst.
Rajesh Munirathinam +7 more
doaj +1 more source
Nitrate And Bicarbonate Selective Chemfets [PDF]
, 1995 The development of durable anion selective CHEMFET micro sensors is described. Selectivity in these sensors is either obtained from differences in hydration energy of the anions (the Hlofmeister series, giving nitrate selectivity) or by introduction of a
Antonisse, Martijn M.G. +2 more
core +1 more source
Synthesis of pyrrolizines by intramolecular capture of 1,4-dipolar intermediates in reactions of enamines with dimethyl acetylenedicarboxylate [PDF]
, 1981 Solvent polarity and reaction temperature strongly influence the reactions of dimethyl acetylenedicar-boxylate (DMAD) with 1-pyrrolidinyl enamines of acyclic and cyclic ketones. Whereas DMAD and 1-[1-phenyl-2-(phenylthio)ethenyl]pyrrolidine (3) give only
Harkema, S. +5 more
core +3 more sources
Le roi, l’armée et la science sous le règne de Carlos III
Bulletin du Centre de Recherche du Château de Versailles, 2006 The second half of the eighteenth century in Spain, symbolized by Charles III’s ascension to the throne in 1759, is marked by a revival of the spirit of modernity, the development of techniques and scientific research. Two major facts illustrate this new
Jean-Paul Le Flem
doaj +1 more source
Estimating the age of fire in the Cape flora of South Africa from an orchid phylogeny [PDF]
, 2010 Fire may have been a crucial component in the evolution of the Cape flora of South Africa, a region characterized by outstanding levels of species richness and endemism.
Antonelli, A +3 more
core +2 more sources
Biology Open, 2018 The central nervous system (CNS) has specific barriers that protect the brain from potential threats and tightly regulate molecular transport. Despite the critical functions of the CNS barriers, the mechanisms underlying their development and function ...
Lisanne Martine van Leeuwen +8 more
doaj +1 more source
Photodefinition of channel waveguide in electro-optic polymer [PDF]
, 2004 Polymers with optically active nonlinear chromophores have been shown to have a promising future in low cost and high speed electro–optic device applications. However, a main question of concern is the photochemical stability of the chromophores for long
Balakrishnan, M. +8 more
core +1 more source