324 research outputs found
Debata "Dzień dzisiejszy i perspektywy dydaktyki historii w Polsce na tle europejskim"
"W Instytucie Historycznym Uniwersytetu Wrocławskiego 23 stycznia
2013 r. odbyła się sesja naukowa związana z jubileuszem czterdziestolecia
Zakładu Dydaktyki Historii i Wiedzy o Społeczeństwie IH UWr,
połączona z promocją księgi jubileuszowej, dedykowanej Pani Profesor
Grażynie Pańko, obecnemu kierownikowi tego Zakładu, a pracownikowi
od samego początku jego istnienia. Sesję rozpoczęła dwuipółgodzinna debata
na temat „Dzień dzisiejszy i perspektywy dydaktyki historii w Polsce
na tle europejskim”, której autoryzowane streszczenie znajduje się poniżej." (fragm.
Satellite DNA in Paphiopedilum subgenus Parvisepalum as revealed by high-throughput sequencing and fluorescent in situ hybridization
Background: Satellite DNA is a rapidly diverging, largely repetitive DNA component of many eukaryotic genomes. Here we analyse the evolutionary dynamics of a satellite DNA repeat in the genomes of a group of Asian subtropical lady slipper orchids (Paphiopedilum subgenus Parvisepalum and representative species in the other subgenera/sections across the genus). A new satellite repeat in Paphiopedilum subgenus Parvisepalum, SatA, was identified and characterized using the RepeatExplorer pipeline in HiSeq Illumina reads from P. armeniacum (2n = 26). Reconstructed monomers were used to design a satellite-specific fluorescent in situ hybridization (FISH) probe. The data were also analysed within a phylogenetic framework built using the internal transcribed spacer (ITS) sequences of 45S nuclear ribosomal DNA.
Results: SatA comprises c. 14.5% of the P. armeniacum genome and is specific to subgenus Parvisepalum. It is composed of four primary monomers that range from 230 to 359 bp and contains multiple inverted repeat regions with hairpin loop motifs. A new karyotype of P. vietnamense (2n = 28) is presented and shows that the chromosome number in subgenus Parvisepalum is not conserved at 2n = 26, as previously reported. The physical locations of SatA sequences were visualised on the chromosomes of all seven Paphiopedilum species of subgenus Parvisepalum (2n = 26–28), together with the 5S and 45S rDNA loci using FISH. The SatA repeats were predominantly localisedin the centromeric, peri-centromeric and sub-telocentric chromosome regions, but the exact distribution pattern was species-specific.
Conclusions: We conclude that the newly discovered, highly abundant and rapidly evolving satellite sequence SatA is specific to Paphiopedilum subgenus Parvisepalum. SatA and rDNA chromosomal distributions are characteristic of species, and comparisons between species reveal that the distribution patterns generate a strong phylogenetic signal. We also conclude that the ancestral chromosome number of subgenus Parvisepalum and indeed of all Paphiopedilum could be either 2n = 26 or 28, if P. vietnamense is sister to all species in the subgenus as suggested by the ITS data
Study of the decay
The decay is studied
in proton-proton collisions at a center-of-mass energy of TeV
using data corresponding to an integrated luminosity of 5
collected by the LHCb experiment. In the system, the
state observed at the BaBar and Belle experiments is
resolved into two narrower states, and ,
whose masses and widths are measured to be where the first uncertainties are statistical and the second
systematic. The results are consistent with a previous LHCb measurement using a
prompt sample. Evidence of a new
state is found with a local significance of , whose mass and width
are measured to be and , respectively. In addition, evidence of a new decay mode
is found with a significance of
. The relative branching fraction of with respect to the
decay is measured to be , where the first
uncertainty is statistical, the second systematic and the third originates from
the branching fractions of charm hadron decays.Comment: All figures and tables, along with any supplementary material and
additional information, are available at
https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-028.html (LHCb
public pages
Measurement of the ratios of branching fractions and
The ratios of branching fractions
and are measured, assuming isospin symmetry, using a
sample of proton-proton collision data corresponding to 3.0 fb of
integrated luminosity recorded by the LHCb experiment during 2011 and 2012. The
tau lepton is identified in the decay mode
. The measured values are
and
, where the first uncertainty is
statistical and the second is systematic. The correlation between these
measurements is . Results are consistent with the current average
of these quantities and are at a combined 1.9 standard deviations from the
predictions based on lepton flavor universality in the Standard Model.Comment: All figures and tables, along with any supplementary material and
additional information, are available at
https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2022-039.html (LHCb
public pages
Möglichkeiten der Verwendung von humoristischen Elementen im Geschichtsunterricht
Möglichkeiten der Verwendung von humoristischen Elementen im GeschichtsunterrichtHumorist elements and anecdotes make history more concrete and vivid for the pupils. They also illustrate how people react on political situations. Polish people have great experience in the humoristic perception of kings and party-leaders
Infantilized adults or confident consumers? Enterprise discourse in the UK retail banking industry
In this paper we examine the implications of enterprise discourse within the context of a culture of consumption. Drawing on empirical work on the UK retail banking industry we demonstrate how retail banking in the UK is central to constructing 'confident consumers' in a consumerist society and demonstrate how enterprise and consumption have reframed the interaction between banks and the consumer. We identify a rhizomic network that spans across diverse activities and electronic traces, and a variety of data sources and statistical techniques that mediate between the industry players. We argue that there has been a fundamental shift in rationality from 'social obligation' to 'confident consumers' which leads to a tension between confident consumers and infantilized adults. Copyright © 2008 SAGE Publications
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