Results 31 to 40 of about 2,838,123 (325)

RNA-seq highlights parallel and contrasting patterns in the evolution of the nuclear genome of fully mycoheterotrophic plants

open access: yesBMC Genomics, 2018
Background While photosynthesis is the most notable trait of plants, several lineages of plants (so-called full heterotrophs) have adapted to obtain organic compounds from other sources.
Mikhail I. Schelkunov   +2 more
doaj   +1 more source

On Strictly Positive Fragments of Modal Logics with Confluence

open access: yesMathematics, 2022
We axiomatize strictly positive fragments of modal logics with the confluence axiom. We consider unimodal logics such as K.2, D.2, D4.2 and S4.2 with unimodal confluence ⋄□p→□⋄p as well as the products of modal logics in the set K,D,T,D4,S4, which ...
Stanislav Kikot, Andrey Kudinov
doaj   +1 more source

New data on bioacoustics and courtship behaviour in grasshoppers (Orthoptera, Acrididae, Gomphocerinae) from Russia and adjacent countries [PDF]

open access: yesZooKeys
The songs of seven grasshopper species of subfamily Gomphocerinae from Russia, Ukraine, Georgia, and Kazakhstan were studied. We analysed not only the sound, but also the stridulatory movements of the hind legs to more entirely describe the songs.
Varvara Vedenina   +2 more
doaj   +3 more sources

Electrophysiology of the rhythmic defecation program in nematode Heterorhabditis megidis

open access: yesScientific Reports, 2017
The nervous system controls most rhythmic behaviors, with a remarkable exception. In Caenorhabditis elegans periodic defecation rhythm does not appear to involve the nervous system.
Victor P. Kuznetsov   +3 more
doaj   +1 more source

A Model in Which Well-Orderings of the Reals First Appear at a Given Projective Level, Part III—The Case of Second-Order PA

open access: yesMathematics, 2023
A model of set theory ZFC is defined in our recent research, in which, for a given n≥3, (An) there exists a good lightface Δn1 well-ordering of the reals, but (Bn) no well-orderings of the reals (not necessarily good) exist in the previous class Δn−11 ...
Vladimir Kanovei, Vassily Lyubetsky
doaj   +1 more source

On the ‘transmission sense of information’ [PDF]

open access: yesBiology & Philosophy, 2012
In order to illuminate the role of information in biology, Bergstrom and Rosvall (Biol Philos 26:159–176, 2011a; Biol Philos 26:195–200, 2011b) propose a ‘transmission sense of information’ which builds on Shannon’s theory. At the core of the transmission sense is an appeal to the reduction in uncertainty in receivers and to etiological function.
openaire   +3 more sources

Chlamydia pan-genomic analysis reveals balance between host adaptation and selective pressure to genome reduction

open access: yesBMC Genomics, 2019
Background Chlamydia are ancient intracellular pathogens with reduced, though strikingly conserved genome. Despite their parasitic lifestyle and isolated intracellular environment, these bacteria managed to avoid accumulation of deleterious mutations ...
Olga M. Sigalova   +7 more
doaj   +1 more source

Model Selection by Balanced Identification: the Interplay of Optimization and Distributed Computing

open access: yesOpen Computer Science, 2020
The technology of formal quantitative estimation of the conformity of mathematical models to the available dataset is presented. The main purpose of the technology is to make the model selection decision-making process easier for the researcher.
Sokolov Alexander V.   +1 more
doaj   +1 more source

On the Benefits of Listen before Talk Scheme for NB-Fi Networks

open access: yesSensors, 2023
NB-Fi (Narrow Band Fidelity) is a promising protocol for low-power wide-area networks. NB-Fi networks use license-exempt Industrial, Scientific, and Medical (ISM) bands and, thus, NB-Fi devices can work in two modes: with and without Listen Before Talk ...
Irina Pavlova   +3 more
doaj   +1 more source

Elbow matching accuracy in young and elderly humans under unusual mechanical constraints

open access: yesFrontiers in Neuroscience, 2016
Experiment was carried out to study the proprioception accuracy of elderly (61-83 years old) and young (22-36 years old) subjects during contralateral elbow matching in sagittal plane.
Vera Talis, Yuri Levik
doaj   +1 more source

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