Results 51 to 60 of about 10,085 (234)

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

Archaeometry, 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, Stefano Columbu, Raffaella De Luca, Marco Lezzerini, Mirco Taranto, Fabrizio Antonelli   +5 more
wiley   +1 more source

Neptunium(V) sorption on quartz and albite in aqueous suspension; Annual progress report

, 1991
The behavior of neptunium in the subsurface environment is of interest since neptunium isotopes are included in nuclear waste. Previous work investigated the sorption behavior of Np onto {alpha}-Fe{sub 2}O{sub 3} (hematite), an accessory mineral of the ...
Kohler, M., Leckie, J. O.
core   +1 more source

The Raman Fingerprints of Quartz, Albite and Calcite [PDF]

, 2023
Here we consider a processing method for Raman spectra, suitable to determine the positions of the peaks and their shoulders. This processing is based on the behavior of the first derivative. It can be used as a preprocessing method for a further fitting
Sparavigna, Amelia Carolina
core   +1 more source

Accounting for retarded weathering products in comparing methods for quantifying carbon dioxide removal in a short-term enhanced weathering study

Frontiers in Climate
Various approaches are currently used to quantify the carbon dioxide removal (CDR) associated with enhanced weathering (EW), which involves amending soils with crushed silicate minerals.
Emily E. E. M. te Pas, Elliot Chang, Elliot Chang, Alison R. Marklein, Rob N. J. Comans, Mathilde Hagens   +5 more
doaj   +1 more source

Cost effective red emitting Eu3+ doped natural sodium feldspar (NaAlSi3O8) powder and photophysical changes on transition to glassy state

Results in Optics, 2023
There is a need for low cost red emitting materials for commercial phosphor converted white light emitting diodes (pc-WLEDs) due to low color rendering index (CRI) and high correlated color temperature (CCT) of currently existing InGaN pumped YAG:Ce3 ...
Prasenjit Saha, Rakesh Shukla, Reshmi Thekke Parayil, Santosh K. Gupta, S.N. Achary, A.K. Tyagi   +5 more
doaj   +1 more source

Materials Characterization and Technological Aspects of Hellenistic Grey Ware Lamps From Nysa‐Scythopolis (Israel): Evidence Suggesting Local Production?

Archaeometry, EarlyView.
ABSTRACT Grey ware lamp fragments and a production waster from Tell Iẓṭabba (Israel) were analyzed to determine their manufacturing technology and provenance. These were compared with a light brown‐orange reference fabric from the same site.
Dana Ashkenazi, Anat Cohen‐Weinberger, Achim Lichtenberger, Oren Tal   +3 more
wiley   +1 more source

Subliquidus glass-glass immiscibility along the albite-diopside join

, 1983
A calorimetric study has shown that glasses along the albite-diopside join in the system albiteanorthite-diopside have positive enthalpies of mixing.
Navrotsky, A., Chan, I., Henry, D. J., Mackinnon, Ian D. R.   +3 more
core   +1 more source

Ceramic Raw Materials and Technological Choices in Iron Age Tyre (Lebanon): A Multiproxy, Fabric‐Based Approach

Archaeometry, EarlyView.
ABSTRACT This study presents a systematically integrated, multiproxy characterisation of Iron Age ceramics from Tyre (Lebanon). Ninety‐nine ceramic samples from stratified Iron Age contexts on Tyre's Acropolis, together with a small Late Bronze Age and raw‐clay reference set, were analysed using petrography, microfossil identification, X‐ray ...
Francisco J. Núñez Calvo, Michał Krueger, Violeta Moreno Megías, Jędrzej Proch, Anna Waskowska, Ali Khalil Badawi   +5 more
wiley   +1 more source

Analisa Struktur dan Mineralogi Batuan dari Sungai Aranio Kabupaten Banjar

Jurnal Fisika Flux, 2017
Penelitian ini bertujuan untuk mengetahui komposisi mineral dan struktur secara mikro dari permukaan batuan yang terdapat di Sungai Aranio, Kabupaten Banjar.
Sudarningsih Sudarningsih, Totok Wianto, Dewi Amelia Widiyastuti   +2 more
doaj   +3 more sources

Initialer Magmatismus und seine Erzbildung in der Beleuchtung des Koli-Kaltimogebiets [PDF]

Bulletin of the Geological Society of Finland, 1969
In the Koli—Kaltimo area, North Karelia, Finland, the initial igneous activity of the Karelidic zone has produced diabase dikes and spilitic sills. Some of the sills have differentiated forming spilitic rock associations, which range from peridotite to ...
T. Piirainen
doaj   +1 more source