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Rare-event sampling analysis uncovers the fitness landscape of the genetic code.
PLoS Comput Biol
April 2023
Graduate School of Sciences, The University of Tokyo, Hongo, Tokyo, Japan.
The genetic code refers to a rule that maps 64 codons to 20 amino acids. Nearly all organisms, with few exceptions, share the same genetic code, the standard genetic code (SGC). While it remains unclear why this universal code has arisen and been maintained during evolution, it may have been preserved under selection pressure.
View Article and Find Full Text PDFStatistical Study of the Properties of Magnetosheath Lion Roars.
J Geophys Res Space Phys
July 2018
Institute of Geophysics and Planetary Physics and Earth and Space Sciences, University of California, Los Angeles, CA, USA.
Lion roars are narrowband whistler wave emissions that have been observed in several environments, such as planetary magnetosheaths, the Earth's magnetosphere, the solar wind, downstream of interplanetary shocks, and the cusp region. We present measurements of more than 30,000 such emissions observed by the Magnetospheric Multiscale spacecraft with high-cadence (8,192 samples/s) search coil magnetometer data. A semiautomatic algorithm was used to identify the emissions, and an adaptive interval algorithm in conjunction with minimum variance analysis was used to determine their wave vector.
View Article and Find Full Text PDFFinding the one: optimal choosiness under sequential mate choice.
J Evol Biol
August 2018
Division of Ecology and Evolution, Research School of Biology, The Australian National University, Acton, Canberra, ACT, Australia.
When mates are encountered sequentially, each encounter involves a decision whether to reject the current suitor and risk not finding a better mate, or to accept them despite their flaws. I provide a flexible framework for modelling optimal choosiness when mate encounters occur unpredictably in time. The model allows for temporal variation in the fitness benefits of mating, including seasonal breeding conditions, accrual of mate search costs, survival of the choosing individual or senescence of gametes.
View Article and Find Full Text PDFSearch for an Ultralight Scalar Dark Matter Candidate with the AURIGA Detector.
Phys Rev Lett
January 2017
INFN, Sezione di Padova, Via Marzolo 8, I-35131 Padova, Italy.
A search for a new scalar field, called moduli, has been performed using the cryogenic resonant-mass AURIGA detector. Predicted by string theory, moduli may provide a significant contribution to the dark matter (DM) component of our Universe. If this is the case, the interaction of ordinary matter with the local DM moduli, forming the Galaxy halo, will cause an oscillation of solid bodies with a frequency corresponding to the mass of moduli.
View Article and Find Full Text PDFEvidence for a new resonance and search for the Y(4140) in the gammagamma-->phiJ/psi process.
Phys Rev Lett
March 2010
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing.
The process gammagamma-->phiJ/psi is measured using a data sample of 825 fb{-1} collected with the Belle detector. A narrow peak of 8.8{-3.
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