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307 results for “fission”
Speciation through chromosomal fusion and fission in Lepidoptera
<p>28 Mai 2020<br> Phylogenetic trees, the chromoSSE script and the input data for the chromoSSE models belonging to the publication "<strong>Speciation through chromosomal fusion and fission in <em>Lepidoptera" </em></strong>doi 10.1098/rstb.2019.0539. For more information, contact jurriaan.devos@unibas.ch or kay.lucek@unibas.ch.</p> <p>The zipped folder "trees" contains three posterior distributions of chronograms for each of 16 genera, based on a sample of 100 trees each.<br> Each tree includes the outgroup taxon, and the ingroup-outgroup split was dated based on one of three strategies:<br> - For the files named GENUS_tmax_pl.tre based on the reported maximum (oldest) age of the reported interval;<br> - For the files named GENUS_tmed_pl.tre based on the reported median age;<br> - For the files named GENUS_tmax_pl.tre based on the reported minimum (youngest) age of the reported interval.<br> Note that the outgroups were pruned prior to diversification rate analysis.<br> The median age files were used as input for the ChromoSSE analysis; all files were used an input for the analyses based on Brownian Motion.</p> <p>The file "chromoSSE.Rev" contains a script that runs the cromoSSE models.<br> Inorder to use this script RevBayes needs to be installed. This can be done by using the link: https://revbayes.github.io/download.<br> It can be run with the command line:<br> $> rb chromoSSE.Rev --args 1<br> As a argument every number between 1 and 16 can be used. And represent a genera:<br> 1 = Colias, 2 = Erebia, 3 = Eunica, 4 = Eurema, 5 = Heliconius, 6 = Ithomia, 7 = Lycaena,<br> 8 = Lysandra, 9 = Memphis, 10 = Morpho, 11 = Oleria, 12 = Papilio, 13 = Pieris,<br> 14 = Polyommatus, 15 = Pteronymia, 16 = Taygetis.<br> The process runs automatically and generates MCMC outputfiles and stores them in the directory "output".<br> Each tree that is analyzed returns three files:<br> -The files named "GENUS.ChromoSSE_anc_statesX.log" logfile of the states;<br> -The files named "GENUS.ChromoSSE_finalX.tree" tree output of the analysis;<br> -The files named "GENUS.ChromoSSE_modelX.log" logfile of the model.<br> The files can be easily accessed by using the software Tracer: https://beast.community/tracer</p> <p>The zipped folder "data" contains input files needed for the chromoSSE analysis.<br> To run each analysis a tree "GENUS.pruned.trees" and a tsv-file "GENUS.pruned.states.tsv" with the number of chromosomes per species is needed.<br> In the trees all species without a chromosom number were excluded.</p>
Compilation of cumulative fission yields for Xe-131, Xe-131m, Xe-133, Xe-133m, Xe-135 and Xe-135m
<p>Values on cumulative fission yields for the Xenon isotopes <sup>131</sup>Xe, <sup>131m</sup>Xe, <sup>133</sup>Xe, <sup>133m</sup>Xe, <sup>135</sup>Xe and <sup>135m</sup>Xe were compiled from the nuclear data libraries ENDF/B-VIII.0, GEFY-8.1, JEFF-3.3 and JENDL-4.0, partly available via the Nuclear Data Services of the the International Atomic Energy Agency. This dataset lists the collected values and their uncertainties as reported.</p>
SpEDIT: A fast and efficient CRISPR/Cas9 method for fission yeast
<p>Underlying data and extended data for:</p> <p><em>SpEDIT</em>: A fast and efficient CRISPR/Cas9 method for fission yeast</p>
Solitary foundation or colony fission in ants: an intraspecific study shows that worker presence and number increase colony foundation success
<p>Datasets for the paper published in Oecologia entitled "Solitary foundation or colony fission in ants: an intraspecific study shows that worker presence and number increase colony foundation success"</p> <p>Script_article.R : R code to analyze the data</p> <p>Data.txt : Growth data</p> <p>donnees_survie.txt : Survival data</p> <p>donnees_presence_nid.txt : Data of the presence of queens in the nest</p>
Do food distribution and competitor density affect agonistic behaviour within and between clans in a high fission-fusion species?
<p>Socioecological theory attributes social variation in female-bonded species to differences in within- and between-group competition, shaped by food distribution. Strong between-group contests are expected over large, monopolisable resources, but not when low-quality food is distributed across large, undefended home ranges. Within-group contests are expected to be more frequent with increasing heterogeneity in feeding sites. We tested these predictions in female Asian elephants, which show traits associated with infrequent contests – predominant graminivory, overlapping home ranges, and high fission-fusion. We examined how agonistic interactions within and between female elephant clans (social groupings) vary with food distribution and competitor density. We found stronger between-clan contests than that known from neighbouring forests and more frequent agonism between females between clans than within clans. Such strong between-clan contest is attributable to food patchiness as the Kabini grassland in the study area had three times the grass biomass as adjacent forests. Within-clan agonism was also frequent but was not influenced by food distribution, contradicting socioecological predictions. Contrary to recent claims, increasing within-clan agonism with group (party) size showed that ecological constraints operate despite high fission-fusion in Asian elephants. Thus, despite graminivory and fission-fusion, within-clan and between-clan agonism can be frequent, especially at high population density.</p>
Spontaneous fission half-lives of actinides and superheavy elements
<p>The uploaded files contain data colected during the studies of the super-heavy elements within the micro-micro model LSD. The results of the studies were published in the paper : J. Marin Blanco, A. Dobrowolski, A. Zdeb, and J. Bartel, Phys. Rev. C <strong>108</strong>, 044618 – Published 30 October 2023. Addidtionaly, there is uploaded the pdf file of the publication. The results are related to the project No. 2021/43/P/ST2/03036 co-funded by theNational Science Centre and the European Union FrameworkProgramme for Research and Innovation Horizon 2020 under the Marie Skłodowska-Curie grant agreement no. 945339.</p> <p> </p>
Supporting information for: An assessment of monazite fission-track thermochronology as a proxy for low-magnitude cooling, Catalina-Rincon Metamorphic Core Complex, AZ, U.S.A.
<p><span>The following supporting information contains: The detailed location and age data for the geochronological, isotopic, and geochemical data used in this study, and their associated publications. Detailed thermochronometric data and associated thermal history modelling information for all thermochronology and modelling presented in the study.</span></p>
MSR SIMULATION WITH CGEMS: SALT AND FISSION PRODUCT EVAPORATION
<p>Conference proceedings: 10th Europen Review Meeting on Severe Accident Research, ERMSAR 2022</p>
MSR Simulation With cGEMS: Fission Product Release And Aerosol Formation
<p>The release of fission products and fuel materials from a molten salt fast reactor fuel in hypothetical accident conditions was investigated. The molten salt fast reactor in this investigation features a fast neutron spectrum, operating in the thorium cycle, and it uses LiF-ThF4-UF4 as a fuel salt. A coupling between the severe accident code MELCOR and thermodynamical equilibrium solver GEMS, the so-called cGEMS, with the updated HERACLES database was used in the modeling work. The work was carried out in the frame of the EU SAMOSAFER project. At the beginning of the simulation, the fuel salt is assumed to be drained from the reactor to the bottom of a confinement building. The containment atmosphere is nitrogen. The fission products and salt materials are heated by the decay heat, and due to heating, they are evaporated from the surface of a molten salt pool. The chemical system in this investigation included the following elements: Li, F, Th, U, Zr, Np, Pu, Sr, Ba, La, Ce, and Nd. In addition to the release of radioactive materials from the fuel salt, the formation of aerosols and the vapor phase species in the modeled confinement were determined.</p>
r-process abundances in neutron star merger dynamical ejecta given different fission yields
<p>This data release contains nucleosynthesis predictions following Vassh et al. (2020) for the r-process abundances of binary neutron star merger ejecta based on the simulation trajectories of Radice et al. (2018), which were mapped to parametrized trajectories based on their neutron-richness (Ye), entropy (s), and expansion timescale (tau). The neutron star merger scenarios considered here cover a wide range of neutron star masses. Calculations were performed with the PRISM code (Mumpower et al. 2018) which accounts for nuclear reheating. Results are reported for two fission yield sets, the Finite Range Liquid Drop Model (FRLDM, Mumpower et al. 2020) and 50/50 symmetric splits. All calculations assumed FRDM12 (Möller et al. 2016) for the nuclear mass model and apply the SFHO equation of state when obtaining the initial composition from nuclear statistical equilibrium (NSE).</p> <p>When using these nucleosynthesis yields, please cite this Zenodo data release (Vassh 2022). Refer to Vassh et al. (2020) for further details on the nuclear physics inputs, to Mumpower et al. (2018) for further details on FRLDM, and to Radice et al. (2018) for further details on the merger ejecta trajectories.</p>
Table 1 in Fission track dating of obsidian source samples from the Willaumez Peninsula, Papua New Guinea and eastern Australia
<p>Table 1. Measurement of thermal neutron fluence.1</p><table><tbody><tr><th>monitor</th><th>external detector</th><th>B (109ntl)</th><th>trackdensity onext.detector (105tcm2)</th><th>thermal neutronfluence (1015ncm2)</th></tr></tbody><tbody><tr><th>Auwire</th><td>TODO</td><td>TODO</td><td>TODO</td><td>2.399±0.034</td></tr><tr><th>Cowire</th><td>TODO</td><td>TODO</td><td>TODO</td><td>2.392±0.025</td></tr><tr><th>CNlglass</th><td>mIca</td><td>1.873±0.025</td><td>13.43±0.26</td><td>2.515±0.036</td></tr><tr><td>makrofol</td><td>1.863±0.023</td><td>13.24±0.26</td><td>2.468±0.058</td></tr><tr><th>CN2glass</th><td>mIca</td><td>1.985±0.007</td><td>12.34±0.25</td><td>2.449±0.051</td></tr><tr><td>makrofol</td><td>2.016±0.041</td><td>12.31±0.25</td><td>2.482±0.072</td></tr></tbody></table><p>1 Calibration of glass dosimeters (B value measurement) was performed by using cobalt and gold monitors (Bonetti <i>et al.,</i> 1994). The thermal neutron fluence value used in the age measurements has been obtained as a weighted mean of the values listed in the last column.</p>
FIGURE 1. Snake chromosomes. A in Karyotypes of Coralsnakes (Reptilia: Elapidae) from the Western Hemisphere, with Comments on Intraspecific Variation and Centric Fission of Chromosomes
FIGURE 1. Snake chromosomes. A. Karyotype of Micruroides euryxanthus (2n = 34, with 14 macrochromosomes and 20 microchromosomes), AMNH R-109413, male. B. Karyotype of Micrurus tener (2n = 32 in males, 33 in females, with 16 macrochromosomes and 16 microchromosomes in males, 17 microchromosomes in females), AMNH R-110075, female illustrated with ZW1W2 sex chromosome heteromorphism. Scale bar = 10 µm.
Development of an OpenFOAM Multiphysics Solver for Solid Fission Products Transport in the Molten Salt Fast Reactor - Dataset
<p>Dataset associated with the PHYSOR 2022 conference paper "Development of an OpenFOAM Multiphysics Solver for Solid Fission Products Transport in the Molten Salt Fast Reactor"</p>
Do food distribution and competitor density affect agonistic behaviour within and between clans in a high fission-fusion species?
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Data from: Social ties drive post-fission group choice in blue monkeys
Open the record for dataset details and reuse information.
Data from: Fission–fusion processes weaken dominance networks of female Asian elephants in a productive habitat
Dominance hierarchies are expected to form in response to socioecological pressures and competitive regimes. We assess dominance relationships among free-ranging female Asian elephants (Elephas maximus) and compare them with those of African savannah elephants (Loxodonta africana), which are known to exhibit age-based dominance hierarchies. Both species are generalist herbivores, however, the Asian population occupies a more productive and climatically stable environment relative to that of the African savannah population. We expected this would lower competition relative to the African taxon, relaxing the need for hierarchy. We tested whether 1) observed dominance interactions among individuals were transitive, 2) outcomes were structured either by age or by social unit according to 4 independent ranking methods, and 3) hierarchy steepness among classes was significant using David's score. Elephas maximus displayed less than a third the number of dominance interactions as observed in L. africana, with statistically insignificant transitivity among individuals. There was weak but significant order as well as steepness among age-classes but no clear order among social units. Loxodonta africana showed significant transitivity among individuals, with significant order and steepness among age-classes and social units. Elephas maximus had a greater proportion of age-reversed dominance outcomes than L. africana. When dominance hierarchies are weak and nonlinear, signals of dominance may have other functions, such as maintaining social exclusivity. We propose that resource dynamics reinforce differences via influence on fission–fusion processes, which we term "ecological release." We discuss implications of these findings for conservation and management when animals are spatially constrained.
Phylogenetic distribution of regeneration and asexual reproduction in Annelida: fission evolves in regenerative clades
<p>Supplementary Data</p> <p>Invertebrate Biology 2016</p> <p>Includes annelid regeneration and fission database (comma separated text table), 2 PDF documents containing field descriptions and full references, 1 Nexus formatted file containing multiple-sequence alignment and RAxML tree, and 1 Geneious formatted file containing multiple-sequence alignment and RAxML tree</p>
A computational toolbox to investigate the metabolic potential and resource allocation in fission yeast
<p>Computational models and figure data for the publication "A computational toolbox to investigate the metabolic potential and resource allocation in fission yeast" (preprint on <a href="https://doi.org/10.1101/2022.05.04.490403"><em>bioRxiv</em></a>). Data put together by Pranas Grigaitis, p.grigaitis [at] vu.nl.</p> <p> </p> <p><em>Abstract</em></p> <p>The fission yeast <em>Schizosaccharomyces pombe</em> is a popular eukaryal model organism for cell division and cell cycle studies. With this extensive knowledge of its cell and molecular biology, <em>S. pombe</em> also holds promise for use in metabolism research and industrial applications. However, unlike the baker’s yeast <em>Saccharomyces cerevisiae</em>, a major workhorse in these areas, cell physiology and metabolism of <em>S. pombe</em> remain less explored. One way to advance understanding of organism-specific metabolism is construction of computational models and their use for hypothesis testing. To this end, we leverage existing knowledge of <em>S. cerevisiae</em> to generate a manually-curated high-quality reconstruction of <em>S. pombe’s</em> metabolic network, including a proteome-constrained version of the model. Using these models, we gain insights into the energy demands for growth, as well as ribosome kinetics in <em>S. pombe</em>. Furthermore, we predict proteome composition and identify growth-limiting constraints that determine optimal metabolic strategies under different glucose availability regimes, and reproduce experimentally determined metabolic profiles. Notably, we find similarities in metabolic and proteome predictions of <em>S. pombe</em> with <em>S. cerevisiae</em>, which indicate that similar cellular resource constraints operate to dictate metabolic organization. With these use cases, we show, on the one hand, how these models provide an efficient means to transfer metabolic knowledge from a well-studied to a lesser-studied organism, and on the other, how they can successfully be used to explore the metabolic behaviour and the role of resource allocation in driving different strategies in fission yeast.</p>
Multiphysics analysis of an in-core fission product removal system for the Molten Salt Fast Reactor - Dataset
<p>Dataset associated to the conference paper "Multiphysics analysis of an in-core fission product removal system for the Molten Salt Fast Reactor", Proceedings of the International Conference Nuclear Energy for New Europe (NENE2022), Portoroz, Slovenia, September 12–15, 2022.</p>
Supplementary of Bayesian Evaluation of Incomplete Fission Yields
<p>This part employ a code to read parameters of the trained Bayesian neural network which are stored in the log file, and output the averaged function values and Confidence Interval (CI) of fission yields. The instructions are given in the attached BNN-fission.PDF file. </p> <p> </p>
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