Results 41 to 50 of about 1,054 (181)

¹⁴C wiggle-matching of short tree-ring sequences from post-medieval buildings in England [PDF]

, 2019
This study tests whether accurate dating by AMS radiocarbon wiggle-matching short tree-ring series (c. 30 annual rings) in the period after AD 1510 can be achieved routinely.
Bayliss, Alex, Freeman, S. P.H.T., Marshall, Peter, Cook, G., Tyers, C., Freeman, S.P.H.T., Farid, Shahina, P. Marshall, C. Tyers, Cook, Gordan, T. Knowles, Farid, S., A. Bayliss, Marshall, P., Doğan, Turhan, Knowles, T., Doğan, T., Tyers, Cathy, G. Cook, Knowles, Timothy, S.P.H.T. Freeman, C. Bronk Ramsey, T. Doğan, E. İlkmen, Bayliss, A., S. Farid, İlkmen, E., Freeman, Stuart P H T, Bronk Ramsey, Christopher, Bronk Ramsey, C.   +29 more
core   +1 more source

Radiocarbon Calibration for Japanese Wood Samples [PDF]

, 2003
The radiocarbon content of Japanese cedars was measured by accelerator mass spectrometry for decadal tree-ring samples from the period of 240 BC to AD 900. Conventional gas counting was also used for part of the samples.
Sahara, Makoto, Imamura, Mineo,, Plicht, Johannes van der, Mitsutani, Takumi, van der Plicht, Johannes, Sahara, Makoto,, Sakamoto, Minoru, Mitsutani, Takumi,, Imamura, Mineo, Plicht, Johannes van der,, Sakamoto, Minoru,   +10 more
core   +1 more source

Bayesian 14C-rationality, Heisenberg Uncertainty, and Fourier Transform

Documenta Praehistorica, 2020
Following some 30 years of radiocarbon research during which the mathematical principles of 14C-calibration have been on loan to Bayesian statistics, here they are returned to quantum physics.
Bernhard Weninger, Kevan Edinborough
doaj   +1 more source

Self‐Assembled Monolayers in p–i–n Perovskite Solar Cells: Molecular Design, Interfacial Engineering, and Machine Learning–Accelerated Material Discovery

Advanced Materials, EarlyView.
This review highlights the role of self‐assembled monolayers (SAMs) in perovskite solar cells, covering molecular engineering, multifunctional interface regulation, machine learning (ML) accelerated discovery, advanced device architectures, and pathways toward scalable fabrication and commercialization for high‐efficiency and stable single‐junction and
Asmat Ullah, Ying Luo, Stefaan De Wolf
wiley   +1 more source

Bayesian evaluation of the southern hemisphere radiocarbon offset during the holocene

, 2009
While an interhemispheric offset in atmospheric radiocarbon levels from AD 1950–950 is now well established, its existence earlier in the Holocene is less clear, with some studies reporting globally uniform 14C levels while others finding Southern ...
Turney, Chris S.M., Palmer, Jonathan G., Ramsey, Christopher Bronk, Turney, Chris, Hogg, Alan, Hogg, Alan G., Palmer, Jonathan, Bronk Ramsey, Christopher, Turney, Chris; id_orcid   +8 more
core   +1 more source

Consensus Formation and Change are Enhanced by Neutrality

Advanced Science, EarlyView.
Neutral agents are shown to enhance both the formation and overturning of consensus in collective decision‐making. A general mathematical model and experiments with locusts and humans reveal that neutrality enables robust consensus via simple interactions and accelerates consensus change by reducing effective population size.
Andrei Sontag, Janina A. Hoffmann, Tim Rogers, Christian A. Yates   +3 more
wiley   +1 more source

Editorial

Internet Archaeology, 2003
The first article to be published in this issue was a research article by Symonds and Ling on concepts of time and travel in early medieval England.
Judith Winters
doaj   +1 more source

SERRATE Regulates Floral Meristem Activity by Antagonizing SHOOT MERISTEMLESS and Repressing Cytokinin Signaling

Advanced Science, EarlyView.
Floral meristem (FM) activity is crucial for the initiation of floral organs. In this study, SE represses IPT7 expression and cytokinin signaling via both the miR171c‐5p–KNAT2 and miR164c–CUC1/2–KNAT2 regulatory modules, thereby repressing FM activity. In contrast, STM induces both KNAT2 and IPT7 expression.
Wen Yang, Yiting Wang, Yuxin You, Zhiyue Wu, Dongbao Li, Xin Wang, Yongsheng Chang, Hang Zhao, Tao Zhu, Dijun Chen, Wei Chen, Bo Sun   +11 more
wiley   +1 more source

Short-Term Magnetic Field Variations From the Post-depositional Remanence of Lake Sediments

Frontiers in Earth Science, 2018
Paleomagnetic records obtained from lake sediments provide important constraints on geomagnetic field behavior. Secular variation recorded in sediments is used in global geomagnetic field models, particularly over longer timescales when archeomagnetic ...
Andreas Nilsson, Neil Suttie, Mimi J. Hill   +2 more
doaj   +1 more source

DMS‐MaPseq and DREEM Analyses Implicate the Critical Role of RNA Structural Dynamics in Turnip Yellow Mosaic Virus Pathogenicity

Advanced Science, EarlyView.
RNA structural profiling of Turnip Yellow Mosaic Virus by DMS‐MaPseq and DREEM analyses uncover that viral genome‐wide RSS is highly complicated and heterogeneous, with alternative RSSs widely distributed across the genome. Notably, the viral 3’ tRNA‐like structure adopts alternative conformations in vivo.
Jiaying Zhu, Changhao Li, Chisimbily Onyia, Xindi Li, Xingxing Yan, Songxiao Zhong, Taerin Oh, Xiuren Zhang   +7 more
wiley   +1 more source