Results 51 to 60 of about 629,173 (167)
, 2023 In October 2020, a report by the European Commission revealed that 90% of Europeans are concerned about the environmental impacts of chemical products.
Raccary, Bastien
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Pigment‐Macromolecule Complexes Isolation from Sea Urchin Biomineral Waste for Coloring Materials
Chemistry–Methods, Volume 6, Issue 1, January 2026.A methodology has been developed to extract the colored organic fraction occluded within seashell biomineral waste. Applied to sea urchin skeletons, free polyhydroxylated naphthoquinone (PHNQ) pigments and PHNQ‐macromolecule complexes are isolated. These complexes show superior pH stability in purple hues compared to free PHNQ, which shifts from red to
Claudio Ferreira +12 more
wiley +1 more source
Do Island Spiders Descend From Trees? – A Tale of Island Colonisation and Niche Expansion
Journal of Biogeography, Volume 52, Issue 12, December 2025.ABSTRACT Aim Oceanic islands are known for being home to drastically different communities compared to the mainland, as their isolation and limited area significantly favour clades able to travel long distances over water. On spiders, this happens mainly, although not exclusively, through ballooning whose propensity is unevenly distributed across ...
R. Costa +4 more
wiley +1 more source
Aperçu sur le développement de la chimie inorganique et analytique en Roumanie
, 1988 Spacu Petru G. Aperçu sur le développement de la chimie inorganique et analytique en Roumanie. In: Bulletin de la Classe des sciences, tome 74, 1988. pp.
Petru G. Spacu, Spacu, Petru G.
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Bibliographie analytique de l’Afrique antique L (2016)
, 2021 La Bibliographie analytique de l'Afrique antique fait suite aux bibliographies parues sous les signatures de J. Desanges et S. Lancel, d’abord dans le Bulletin d’Archéologie Algérienne (I, 1962-1965, à III, 1968, pour les publications des années 1961 à ...
Villey, Thomas +7 more
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CHIMIA, 1977 The 1253.6 eV induced photo-electron spectra of solid selenides and red selenium are compared with the industrially used glass Ge33As12Se56. Corresponding to the low Se/Ge ratio, the germanium I values are low, the Auger signals indicate a high Wagner ...
Renata Reisfeld +3 more
doaj +1 more source
CHIMIA, 1976 Thiogermanate and thioarsenite glasses containing bivalent calcium or lead have low phonon wave-numbers and enhance line-emission of trivalent lanthanides by less extensive multi-phonon de-excitation and by energy transfer.
Renata Reisfeld +3 more
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Etude par C.L.H.P. de la réaction glucoside de malvidine-acetaldéhydecomposé phénolique
OENO One, 1987 La catéchine ou l'épicatéchine réagissent sur le monoglucoside de malvidine en présence d'acétaldéhyde pour donner dans un premier temps deux composés de condensation fortement colorés.
Jean-Pierre Roggero +3 more
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Grands pharmaciens : Georges Denigès (1859-1951). Quelques aspects de son œuvre en chimie analytique
, 2002 Devaux Guy. Grands pharmaciens : Georges Denigès (1859-1951). Quelques aspects de son œuvre en chimie analytique. In: Revue d'histoire de la pharmacie, 90ᵉ année, n°336, 2002. pp.
Devaux, Guy
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Contribution à l'étude de l'affinité chimique (systèmes réversibles).
, 1909 Kopftitel: Laboratoire de Chimie Analytique de l'Université de GenèveThèse Sc.
Golblum, Henryk. +1 more
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