Results 61 to 70 of about 4,440,832 (298)
A stepwise emergence of evolution in the RNA world
FEBS Letters, EarlyView.How did biological evolution emerge from chemical reactions? This perspective proposes a gradual scenario of self‐organization among RNA molecules, where catalytic feedback on random mixtures plays the central role. Short oligomers cross‐ligate, and self‐assembly enables heritable variations. An event of template‐externalization marks the transition to
Philippe Nghe
wiley +1 more source
Buffon, Jefferson and the theory of New World degeneracy
Evolution: Education and Outreach, 2019 In his magnum opus, Natural History: General and Particular, Count Buffon, one of the leading natural historians of the 18th century, argued that all life in the New World, particularly North America, was degenerate—weaker, smaller and feebler—than life ...
Lee Alan Dugatkin
doaj +1 more source
History entanglement entropy [PDF]
arXiv, 2020 A formalism is proposed to describe entangled quantum histories, and their entanglement entropy. We define a history vector, living in a tensor space with basis elements corresponding to the allowed histories, i.e. histories with nonvanishing amplitudes.
arxiv
Molecular Oncology, EarlyView.This study simultaneously investigated circulating tumor cells (CTCs) and exosomes from small‐cell lung cancer (SCLC) patients. The elevated expression of JUNB and CXCR4 in CTCs was a poor prognostic factor for SCLC patients, whereas exosomal overexpression of these biomarkers revealed a high discrimination ability of patients from healthy individuals,
Dimitrios Papakonstantinou +13 more
wiley +1 more source
New Directions in the History of Written Culture
Culture & History Digital Journal, 2012 This article reviews some new directions in the history of writing practices, concentrating on Western Europe and the Americas in the nineteenth and early twentieth centuries.
Martyn Lyons
doaj +1 more source
Isogrowth Cosmology (and How to Map the Universe) [PDF]
arXiv, 2022 While general relativity ties together the cosmic expansion history and growth history of large scale structure, beyond the standard model these can have independent behaviors. We derive expressions for cosmologies with identical growth histories but different expansion histories, or other deviations. This provides a relation for isogrowth cosmologies,
arxiv
BRST Quantisation of Histories Electrodynamics [PDF]
J.Math.Phys. 43 (2002) 4801-4818, 2001 This paper is a continuation of earlier work where a classical history theory of pure electrodynamics was developed in which the the history fields have \emph{five} components. The extra component is associated with an extra constraint, thus enlarging the gauge group of histories electrodynamics. In this paper we quantise the classical theory developed
arxiv +1 more source
Czesław Miłosz’ American Experience in Światło dzienne (Daylight) [PDF]
, 2016 Miłosz’s volume Światło dzienne (Daylight, 1953) is conventionally read by critics as the political poetry deeply engaged with history. The article offers a corrective to this traditional reading by interpreting the volume as an interplay of European and
Kołodziejczyk, Ewa
core +2 more sources
Molecular Oncology, EarlyView.Analysis of ESR1 mutations in plasma cell‐free DNA (cfDNA) is highly important for the selection of treatment in patients with breast cancer. Using multiplex‐ddPCR and identical blood draws, we investigated whether circulating tumor cells (CTCs) and cfDNA provide similar or complementary information for ESR1 mutations.
Stavroula Smilkou +11 more
wiley +1 more source
Online Appendix & Additional Results for The Determinants of Social Connectedness in Europe [PDF]
arXiv, 2020 In this online appendix we provide additional information and analyses to support "The Determinants of Social Connectedness in Europe." We include a number of case studies illustrating how language, history, and other factors have shaped European social networks. We also look at the effects of social connectedness. Our results provide empirical support
arxiv