Results 21 to 30 of about 10,541 (259)

Dating old hollow trees by applying a multistep tree-ring and radiocarbon procedure to trunk and exposed roots

MethodsX, 2018
In the process of dating the oldest trees, which are often hollow, we developed a new method that combines tree-ring cross dating and wiggle matching radiocarbon techniques on wood samples extracted from the stem and from exposed roots. The method can be
Gianluca Piovesan, Franco Biondi, Michele Baliva, Lucio Calcagnile, Gianluca Quarta, Alfredo Di Filippo   +5 more
doaj   +1 more source

RADIOCARBON INVESTIGATION OF THE BIG BAOBAB OF OUTAPI, NAMIBIA

Studia Universitatis Babes-Bolyai Chemia, 2021
The article reports the AMS (accelerator mass spectrometry) radiocarbon dating results of the Big baobab of Outapi, which is the largest African baobab of Outapi, Namibia.
Adrian PATRUT, Roxana T. PATRUT, Laszlo RAKOSY, Demetra RAKOSY, Ileana-Andreea RATIU, Karl F. VON REDEN   +5 more
doaj   +1 more source

Discovery of annual growth in a modern olive branch based on carbon isotopes and implications for the Bronze Age volcanic eruption of Santorini

Scientific Reports, 2021
The volcanic eruption of Santorini in the Bronze Age left detectable debris across the Mediterranean, serving as an anchor in time for the region, synchronizing chronologies of different sites.
Yael Ehrlich, Lior Regev, Elisabetta Boaretto   +2 more
doaj   +1 more source

Crystallinity assessment of anthropogenic calcites using Raman micro-spectroscopy

Scientific Reports, 2023
Anthropogenic calcite is a form of calcium carbonate produced through pyrotechnological activities, and it is the main component of materials such as lime binders and wood ash.
Michael B. Toffolo, Iddo Pinkas, Ana Álvaro Gallo, Elisabetta Boaretto   +3 more
doaj   +1 more source

RADIOCARBON INVESTIGATION OF THE PEDUNCULATE OAK OF BOTOSANA, ROMANIA

Studia Universitatis Babes-Bolyai Chemia, 2018
The article discloses the AMS (accelerator mass spectrometry) radiocarbon dating results of the pedunculate oak of Botoşana. Four wood samples were extracted from its trunk.
Adrian PATRUT, Nicolae ROBU, Vasile SAVU, Roxana T. PATRUT, Laszlo RAKOSY, Ileana-Andreea RAŢIU, Daniel A. LOWY, Dragos MARGINEANU, Karl F. von REDEN   +8 more
doaj   +1 more source

The Bolivian Radiocarbon Database: A Countrywide Compilation of Radiocarbon Dates

Journal of Open Archaeology Data, 2023
The radiocarbon dating record from sites in the territory that comprises the Plurinational State of Bolivia has been previously included in datasets that are either obsolete, inaccurate, or incomplete.
José M. Capriles
doaj   +1 more source

RADIOCARBON INVESTIGATION OF TWO LARGE AFRICAN BAOBABS FROM KIZIMKAZI, ZANZIBAR, TANZANIA

Studia Universitatis Babes-Bolyai Chemia, 2022
The article reports the AMS (accelerator mass spectrometry) radiocarbon dating results of Kizimkazi Big tree and Kizimkazi II baobab, two large African baobabs from Zanzibar, Tanzania.
Adrian PATRUT, Roxana T. PATRUT, Laszlo RAKOSY, Ileana-Andreea RATIU, Jenö BODIS, Nassor Mahmoud NASSOR, Karl F. VON REDEN   +6 more
doaj   +1 more source

A label-free quantification method for assessing sex from modern and ancient bovine tooth enamel

Scientific Reports
Identification of the sex of modern, fossil and archaeological animal remains offers many insights into their demography, mortality profiles and domestication pathways.
Paula Kotli, David Morgenstern, Fanny Bocquentin, Hamoudi Khalaily, Liora Kolska Horwitz, Elisabetta Boaretto   +5 more
doaj   +1 more source

The beginnings of S-shaped temple rings in Bohemia from the perspective of archaeological analysis and radiocarbon dating

Archeologické Rozhledy
Jewellery represents important evidence not only for the reconstruction of fashion and cultural development but also provides significant support for the chronology of the periods studied.
Nikola Koštová, Kateřina Tomková, Naďa Profantová, Petr Limburský   +3 more
doaj   +1 more source

Autonomous Machine Learning‐Based Classification and Arrangement of Submillimeter Objects Using a Capillary Force Gripper

Advanced Intelligent Discovery, EarlyView.
This study presents an automated system integrating a capillary force gripper and machine learning‐based object detection for sorting and placing submillimeter objects. The system achieved stable and simultaneous manipulation of four object types, with an average task time of 86.0 seconds and a positioning error of 157 ± 84 µm, highlighting its ...
Satoshi Ando, Naoto Watanabe, Chihiro Sekine, Shogen Sekiguchi, Ohmi Fuchiwaki   +4 more
wiley   +1 more source