Results 31 to 40 of about 298,753 (226)

Petrology and dating of the Permian lamprophyres from the Malá Fatra Mts. (Western Carpathians, Slovakia)

Geologica Carpathica, 2018
Calc–alkaline lamprophyres are known from several localities in the Malá Fatra Mountains. They form dykes (0.5–3 m) of varying degree of alteration that have intruded the surrounding granitoid rocks which are often incorporated xenoliths. Clinopyroxenes (
Spišiak Ján, Vetráková Lucia, Chew David, Ferenc Štefan, Mikuš Tomáš, Šimonová Viera, Bačík Peter   +6 more
doaj   +1 more source

Clues from Ab Initio Calculations on Titanium Isotopic Fractionation in Tholeiitic and Calc-Alkaline Magma Series [PDF]

, 2021
Magmatic differentiation produces positive correlations between δ49Ti and SiO2. The equilibrium Ti isotope fractionation factors of Ti-bearing minerals are essential for understanding the mechanisms driving this isotopic fractionation.
Aarons, Sarah M., Nie, Nicole Xike,, Nie, Nicole Xike, X, Hopp, Timo, Dauphas, Nicolas, Aarons, Sarah,, Aarons, Sarah, M, Johnson, Aleisha,, Greber, Nicolas,, Johnson, Aleisha, C, Zeng, Hao, Johnson, Aleisha C., Greber, Nicolas, D, Blanchard, Marc, Greber, Nicolas D., Nie, Nicole Xike, Nicolas D. Greber, Hao Zeng, Nicole Xike Nie, Marc Blanchard, Nicolas Dauphas, Timo Hopp, Sarah M. Aarons, Aleisha C. Johnson   +23 more
core   +3 more sources

Interpretable Machine Learning Framework for Nb─Si Based Alloy Design with Enhanced Fracture Toughness

Advanced Science, EarlyView.
An interpretable machine learning framework integrating SHAP and PDP analysis identifies critical design descriptors from 139 physicochemical features for Nb─Si alloys. The framework achieves <7% prediction error and guides the discovery of Nb38.5Ti38.5Si3Zr18V2 alloy with 22.791 MPa·m1/2 fracture toughness, breaking the 20 MPa·m1/2 barrier.
Dezhi Chen, Chao Xu, Jingyue Yu, Qi Wang, Hongze Fang, Shuo Yin, Turab Lookman, Ruirun Chen   +7 more
wiley   +1 more source

Biomimetic Nanomedicine for Aging‐Impaired Bone Regeneration: From Microenvironmental Dysfunction to Precision Therapeutics

Advanced NanoBiomed Research, EarlyView.
Aging disrupts the cellular, immune, vascular, and neural processes required for bone regeneration. This review connects these pathological barriers with biomimetic nanomedicine design, highlighting strategies for cellular rejuvenation, immune modulation, vascular regeneration, and neuro–bone coupling.
Zeyu Wang, He Zhang, Simo Liu, Rui Wang, Yiran Wei, Kailu Zheng, Yanming Guo, Min Li, Dian Yuan, Yuxin Liu, Lifang Feng, Yongping Ma, Yan Liu   +12 more
wiley   +1 more source

Evolution of the volcanic mechanism in the central part of the Urumieh-Dokhtar magmatic arc

Journal of Economic Geology, 2021
Introduction Cenozoic volcanic activities in the Urumieh-Dokhtar Magmatic Arc (UDMA) have occurred in three main pulses of Eocene, upper Oligocene-Pliocene, and Pio-Quaternary (Dilek et al., 2010, Sayari, 2015).
Mohammad Sayari , Mortaza Sharifi
doaj   +1 more source

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

Journal 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, Andresa Feihrmann, Guilherme Duenhas Machado, Lucio Cardozo‐Filho, Francisco Adrian Sánchez, Vladimir Ferreira Cabral   +5 more
wiley   +1 more source

Radiometric K/ag data as evidence of the geodynamic evolution of the Ždraljica ophiolitic complex, central Serbia [PDF]

Geološki Anali Balkanskoga Poluostrva, 2005
The study presents age data and petrologic characteristics of igneous rocks of the Ždraljica ophiolitic complex (ŽOC), situated in central Serbia, 150 km south of Belgrade.
Resimić-Šarić Kristina, Cvetković Vladica, Balogh Kadosa   +2 more
doaj   +1 more source

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

Biofuels, 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, Marcela C. Ferreira, Klicia A. Sampaio, Eduardo A. C. Batista, Guilherme J. Maximo   +4 more
wiley   +1 more source

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

Вестник 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, P.I. Fedorov, D.V. Kovalenko   +2 more
doaj   +1 more source

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

پترولوژی, 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, farzaneh khademian, Mohammad Rahgoshay, Alireza Jafari Rad   +3 more
doaj   +1 more source