Results 11 to 20 of about 228 (151)
Styryllactones and Acetogenins from the Fruits of
Natural Product Communications, 2014 Two new styryllactones, macrocalactone (1) and 3-deoxycardiobutanolide (2), were isolated from the fruits of Goniothalamus macrocalyx Ban (Annonaceae), together with seven known compounds including four acetogenins, annonacin (3), solamin (4 ...
Quy Hung Trieu +9 more
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Dynamiques environnementales, 2023 En bordure du golfe de Tarente, d’anciennes terrasses marines quaternaires soulevées à proximité de l’Apennin lucanien réalisent un étagement de plateaux, entre 30 et 330 mètres d’altitude. Elles sont corrélées aux niveaux marins de la chronologie isotopique enregistrés depuis 600 000 ans.
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Uranium and radium diffusion in organic‐rich sediments (sapropels)
Geochemistry, Geophysics, Geosystems, 2011 Among the late Quaternary Mediterranean sapropels, the S5 (125 ka) is one of the best preserved due to its high organic carbon content that has limited postdepositional oxidation.
A. Gourgiotis +4 more
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Geodinamica Acta, 1993 ResumenLes resultats de 47 nouvelles analyses du desequilibre 230Th/234U/238U, realisees sur des tests de mollusques fossiles et des neoformations carbonatees associees, sont discutes en fonction de leur degre de validite en terme d’âges. Les systemes geochimiques U-Th parfaitement clos sont l’ex ception.
Christiane Causse +3 more
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Direct Growth of 2D Bilayers on Au(111) for Low‐Coercive Sliding Ferroelectricity
Advanced Materials, EarlyView.Controlled CVD growth of stacking‐defined bilayer ReS2 on Au(111) enables parallel‐stacked bilayers with intrinsic sliding ferroelectricity, a strong piezoelectric response, and an ultralow coercive voltage. Atomic‐resolution imaging and in situ measurements further reveal the decisive role of clean interfaces in achieving low‐barrier ferroelectric ...
Honglin Chen +7 more
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Archaeological Prospection, EarlyView.ABSTRACT This document is a report on the field application of non‐invasive geophysical and robotic prospecting methods at the submerged Neolithic site of La Marmotta (Lake Bracciano, Italy), within the LAHKE (LAke Heritage Knowledge and Exploration) project; the study focuses on the practical validation, adaptation and transfer of existing ...
dell' Erba Ramiro +4 more
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FlexMat, EarlyView.Addressing the challenges inherent in dry reforming of methane (DRM), this paper focuses on the structural design and performance optimization of Ni‐based catalysts. The modulation strategies for DRM are systematically reviewed across four dimensions: the micromorphology of active metals, metal‐support interactions, electronic modifications by ...
Bowei Cao, Junlei Zhang, Wanglei Wang
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Les terrasses d'abrasion marine de la côte syrienne
Revue de géographie alpine, 1954 de Vaumas Etienne. Les terrasses d'abrasion marine de la côte syrienne. In: Revue de géographie alpine, tome 42, n°4, 1954. pp. 633-664.
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Geological Journal, EarlyView.The composition of intrusive rocks suggests that the magma was likely generated in a subduction‐related setting. The arc crustal thickness in the Phnom Sro Ngam and Halo Prospects was probably < 40 km during emplacement. Zircon U–Pb age range indicates a correlation with Loei Fold Belt magmatic activity.
Sirisokha Seang +6 more
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Journal of Quaternary Science, EarlyView.ABSTRACT Subfossil insect communities from the Quartz Creek site provide a detailed record of both Late Pleistocene steppe–tundra and Holocene boreal forest ecosystems in central Yukon Territory, Canada. Fifteen Pleistocene assemblages (marine isotope stages [MIS] 4 to 2) are dominated by steppe–tundra and dry‐tundra taxa, particularly the weevils ...
Scott L. Cocker +4 more
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