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1. To age or not to age: Anatomy of a supercooled liquid’s response to a high alternating electric field

   https://doi.org/10.1063/5.0138149  

   Richert, Ranko ( January 2023 , The Journal of Chemical Physics)

   Physical aging and structural recovery are the processes with which the structure of a system approaches equilibrium after some perturbation. Various methods exist, that initiate structural recovery, such as changing the temperature or applying a strong, external static field. This work is concerned with high alternating electric fields and their suitability to study structural recovery and aging. The present work demonstrates that rationalizing the nonlinear dielectric response of a supercooled liquid to high-amplitude ac-fields requires multiple fictive temperatures. This feature is in stark contrast to structural recovery after a temperature down-jump or a considerable increase in the static electric field, for which a single parameter, the fictive temperature or material time, describes the structural change. In other words, the structural recovery from a high ac-field does not adhere to time aging–time superposition, which is so characteristic of genuine aging processes. 

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2. Age group DNA methylation differences in lemon sharks ( Negaprion brevirostris ): Implications for future age estimation tools

   https://doi.org/10.1002/ece3.9226  

   Beal, Andria Paige ; Hackerott, Serena ; Feldheim, Kevin ; Gruber, Samuel H. ; Eirin‐Lopez, Jose M. ( August 2022 , Ecology and Evolution)
3. The Ice Core Gas Age‐Ice Age Difference as a Proxy for Surface Temperature

   https://doi.org/10.1029/2021GL094241  

   Buizert, Christo ( October 2021 , Geophysical Research Letters)
4. Age of Information for Updates With Distortion: Constant and Age-Dependent Distortion Constraints

   https://doi.org/10.1109/TNET.2021.3091493  

   Bastopcu, Melih ; Ulukus, Sennur ( December 2021 , IEEE/ACM Transactions on Networking)
5. Calendar Age of the Baigetobe Kurgan from the Iron Age Saka Cemetery in Shilikty Valley, Kazakhstan

   https://doi.org/10.1017/RDC.2015.15  

   Panyushkina, Irina P ; Slyusarenko, Igor Y ; Sala, Renato ; Deom, Jean-Marc ; Toleubayev, Abdesh T ( March 2016 , Radiocarbon)

   Abstract This study addresses the development of an absolute chronology for prominent burial sites of Inner Asian nomadic cultures. We investigate Saka archaeological wood from a well-known gold-filled Baigetobe kurgan (burial mound #1 of Shilikty-3 cemetery) to estimate its calendar age using tree-ring and 14 C dating. The Saka was the southernmost tribal group of Asian Scythians, who roamed Central Asia during the 1st millennium BC (Iron Age). The Shilikty is a large burial site located in the Altai Mountains along the border between Kazakhstan and China. We present a new floating tree-ring chronology of larch and five new 14 C dates from the construction timbers of the Baigetobe kurgan. The results of Bayesian modeling suggest the age of studied timbers is ~730–690 cal BC. This places the kurgan in early Scythian time and authenticates a previously suggested age of the Baigetobe gold collection between the 8th and 7th centuries BC derived from the typology of grave goods and burial rites. Chronologically and stylistically, the Scythian Animal Style gold from the Baigetobe kurgan is closer to Early Scythians in the North Caucasus and Tuva than to the local Saka occurrences in the Kazakh Altai. Our dating results indicate that the Baigetobe kurgan was nearly contemporaneous to the Arjan-2 kurgan (Tuva) and could be one of the earliest kurgans of the Saka-Scythian elite in Central Asia. 

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