Results 161 to 170 of about 169,014 (352)

Homo‐epitaxy and twinning produce complex nanostructures in cryogenic calcite

open access: yesJournal of Applied Crystallography, EarlyView.
A transmission electron microscopy study of cryogenic calcite samples reveals the homo‐epitaxial intergrowths of {1120}//{1120}rotated, {0001}//{1100} and {1102}//{1108} interfaces, all being energetically favorable, along with their cooperation with {1014} twinning.Calcite is famous for the rich diversity of oriented crystal growths.
Péter Németh   +3 more
wiley   +1 more source

Influence of Drying Protocol on the Setting and Crystalline Phase Formation of Calcium Silicate‐Based Sealers

open access: yesAustralian Endodontic Journal, EarlyView.
ABSTRACT The objective of this study was to assess the hydration, crystalline structure, and setting of bioceramic ready‐to‐use and powder/liquid sealers in dry and wet root canal dentine. Thirty‐two single‐rooted human teeth were embedded in acrylic resin and sectioned into 2‐mm segments.
Thiago Bessa Marconato Antunes   +8 more
wiley   +1 more source

Mesoporous Calcite by Polymer Templating

open access: green, 2008
Miles Page   +4 more
openalex   +2 more sources

Speleothems [PDF]

open access: yes, 2006
Borsato, A   +3 more
core   +1 more source

Eye makeup in Northwestern Iran at the time of the Assyrian Empire: a new kohl recipe based on manganese and graphite from Kani Koter (Iron Age III)

open access: yesArchaeometry, EarlyView.
Abstract Kohl was ubiquitous in ancient Egypt and the Middle East, and routinely included among the toiletries deposited in burials. For Egypt, kohl recipes are increasingly well‐studied and known to use a range of inorganic and organic ingredients. Although these are often lead‐based, manganese‐ and silicon‐rich compounds are also attested.
Silvia Amicone   +7 more
wiley   +1 more source

Supplementary material to "Reconstruction of drip-water δ 18 O based on calcite oxygen and clumped isotopes of speleothems from Bunker Cave (Germany)"

open access: gold, 2012
T. Kluge   +12 more
openalex   +1 more source

Soil wetting and drying processes influence stone artefact distribution in clay‐rich soils: A case study from Middle Gidley Island in Murujuga, northwest Western Australia

open access: yesArchaeometry, EarlyView.
Abstract Soils that contain swelling clay minerals (e.g., montmorillonite) expand and contract during wetting and drying, causing movement within the soil profile. This process, known as argilliturbation, can alter artefact distributions, destroy stratigraphy and complicate the interpretation of archaeological deposits.
Caroline Mather   +11 more
wiley   +1 more source

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