Results 71 to 80 of about 13,020 (240)

Video3_Coacervation of biopolymers on muscovite surface.AVI [PDF]

open access: yes, 2022
The first life was believed to emerge in the early Earth via a process involving synthesis of organic compounds and formation of protocells. However, it is still a puzzle how the protocell with hierarchal structure and desirable functions was ...
Zhijun Liu (35566)   +5 more
core   +1 more source

A Newly Discovered Tablet‐Making Facility in Nineveh: Insights From Scientific Analysis

open access: yesArchaeometry, EarlyView.
ABSTRACT This paper addresses the question of tablet technology in the Neo‐Assyrian capital city of Nineveh. Recent excavations in the lower town of Nineveh by the Iraqi–Italian Archaeological Expedition uncovered an exceptional assemblage of more than 200 tablets from an elite residence that appears to have included a scriptorium.
Mathilde Jean   +7 more
wiley   +1 more source

Surface structure of natural muscovite [PDF]

open access: yes, 2010
The aim of this project is to study the atomic surface structure of a natural muscovite crystal thanks to the synchrotron radiation light and the grazing incidence X-ray diffraction (GIXRD).The muscovite studied [(K0.92Na0.08) (Al1.86Fe3+0.01Mg.0.07 Fe2 ...
MALFERRARI, Daniele   +4 more
core  

Luminescence properties of natural muscovite relevant to optical dating of contaminated quartz samples [PDF]

open access: yes, 2018
Muscovite is a mineral commonly found along quartz in sediments, where the latter is the mineral of choice in numerous optically stimulated luminescence (OSL) dating studies.
A. Timar-Gabor   +14 more
core   +3 more sources

Learning Across the Divide: Understanding Knowledge Sharing Through Petrographic Analysis on Ceramics From the Rhine‐Meuse Delta During the Middle to Late Neolithic Transition (3400–2200 bce)

open access: yesArchaeometry, EarlyView.
ABSTRACT Vlaardingen (VL) communities on the Dutch West coast (3400–2200 bce) are part of a unique, long‐term continuity in the European Neolithic. Despite large‐scale changes in European populations during the Neolithic, the genomic diversity and cultural practices of VL communities can be retraced to the Mesolithic.
Jisca de Bruin   +3 more
wiley   +1 more source

Understanding the Liberation of Asphaltenes on the Muscovite Surface [PDF]

open access: yes, 2017
Separation of heavy hydrocarbons from mineral surfaces is the key step for unconventional oil production and remediation of oil-contaminated soils. The presence of asphaltene and the coexistence of mineral rocks are considered as the most challenge ...
Hong Sui (727766)   +3 more
core   +1 more source

Influence of mica on unconfined compressive strength of a cement-treated weathered granite gravel

open access: yesJournal of the South African Institution of Civil Engineers, 2012
The road construction industry faces a shortage of naturally occurring gravel materials that meet the requirements for base or even at times sub-base quality. This situation is exacerbated in some cases by the occurrence of mica in soils.
M R Mshali, A T Visser
doaj  

Neural Networks and Multivariate Analysis Based on Geochemical Data to Determine Stone Provenance From Ancient Calabrian Quarries (Southern Italy)

open access: yesArchaeometry, EarlyView.
ABSTRACT This study shows an innovative approach to determine the origin of some Calabrian rocks quarried used in ancient times. Twenty‐five quarries, distributed in all the Calabrian provinces (Southern Italy), were studied and sampled. Ten samples were taken from each quarry, for a total of 250 samples.
Domenico Miriello   +5 more
wiley   +1 more source

Mineralogy of graphite-bearing schists and calculation of graphitization temperature in the Band-e-Cherk district, Anarak metallogenic zone [PDF]

open access: yesعلوم زمین خوارزمی, 2023
The Band-e-Cherk exploration area is located in the structural zone of central Iran, northeast of the city of Ardestan, and the Anarak metallogenic zone.
Majid Ghasemi Siani   +4 more
doaj  

Assessment and Correction of Non‐Linearity Effects for In Situ Rb‐Sr Geochronology Applied to High 87Rb/86Sr Mica

open access: yesGeostandards and Geoanalytical Research, EarlyView.
Key Points Measurement of 86Sr at count rates < 1500 cps can result in statistical bias. Non‐linear signals in analogue detection mode (e.g., Rb) present a challenge for accurately dating high 87Rb/86Sr mica (> 1000). Accounting for these considerations, high 87Rb/86Sr mica are dated here with accuracies of ∼ 1%.
Duane C. Petts   +5 more
wiley   +1 more source

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