Results 41 to 50 of about 278,731 (238)

Late Cretaceous-Early Paleogene volcanic rocks of Eastern Kamchatka (сomposition and isotopic-geochemical heterogeneity)

open access: yesВестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле
New and previously published isotope-geochemical material on the Upper Cretaceous-Lower Paleogene volcanic complexes of the Ozernovsky-Valaginsky segment of the Achaivayam-Valaginsky paleoarc are presented. It is found that composition of rocks composing
N.V. Tsukanov   +2 more
doaj   +1 more source

Geochemistry, petrogenesis and tectonic setting of volcanic rocks North Qazvin (Western Alborz) [PDF]

open access: yesپترولوژی, 2019
The magmatic activities in north Qazvin, as a part of the Western Alborz zone, contain a sequences of volcanic lavas associated with pyroclastic rocks with Eocene age.
Iman Monsef   +3 more
doaj   +1 more source

Liquid–Liquid Equilibrium Data for Refined Olive Pomace Oil + Oleic Acid + Ethanol + Water Systems: Application to Solvent Deacidification

open access: yesJournal of the American Oil Chemists' Society, EarlyView.
ABSTRACT This study presents the first experimental liquid–liquid equilibrium (LLE) data for quaternary systems composed of refined olive pomace oil, oleic acid, ethanol, and water at 303.15 K. These data are essential for the design and optimization of solvent‐based deacidification processes, particularly for oils with high free fatty acid (FFA ...
Jacqueline Mansano Ortega   +5 more
wiley   +1 more source

Geochemistry and tectonic setting of volcanic rocks in Ahovan area, northeast of Semnan (Central Iran) [PDF]

open access: yesپترولوژی
IntroductionVolcanic rocks widely extended throughout the Earth's continental crust (Brilhante et al., 2024). Among the different tectonic setting, a group of igneous rocks is related to volcanic arc; these rocks, according to Tang et al. (2022), include
Saeed Kamran   +4 more
doaj   +1 more source

MDL‐800‐induced SIRT6 activation decreases age‐associated osteoarthritis in mice

open access: yesArthritis &Rheumatology, Accepted Article.
Objective SIRT6 is a nuclear‐localized histone deacetylase that regulates multiple pathways associated with aging. This study aimed to determine whether systemic administration of a small molecule activator of SIRT6, MDL‐800, decreases the severity of age‐associated osteoarthritis (OA) in mice.
Matheus Moreira Perez   +13 more
wiley   +1 more source

Macaúba (Acrocomia aculeata) pulp oil ethylic biodiesel using lipase from Aspergillus oryzae: kinetic and process parameters

open access: yesBiofuels, Bioproducts and Biorefining, EarlyView.
Abstract Macaúba (Acrocomia aculeata), a native species from Brazilian biomes, has emerged as a sustainable alternative to vegetable oil production. Its fruit presents high oil yield (3–6 ton/ha), extracted from its kernel and pulp. While the kernel is suitable for food and cosmetics application, the pulp oil has been considered as a promising ...
Maria Luiza M. B. B. Gonçalves   +4 more
wiley   +1 more source

Relatório final

open access: yes, 2011
CALC ...
CALC, ALADI
core   +1 more source

Coeval interaction between magmas of contrasting composition (Late Carboniferous-Early Permian Santa Eulália-Monforte massif, Ossa-Morena Zone): field relationships and geochronological constraints

open access: yesGeologica Acta, 2017
The Santa Eulália-Monforte massif is a post-kinematic Late Carboniferous-Early Permian calc-alkaline composite massif (LC-EP) located in the Ossa-Morena Zone (OMZ, Portugal).
M.F. PEREIRA, C. GAMA, C. RODRÍGUEZ
doaj  

A Geochemical Overview of Mid-Archaean Metavolcanic Rocks from Southwest Greenland

open access: yesGeosciences, 2018
The present contribution reviews bulk-rock geochemical data for mid-Archaean (ca. 3075–2840 Ma) metavolcanic rocks from the North Atlantic Craton of southwest Greenland.
Kristoffer Szilas
doaj   +1 more source

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