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Mapping the inversion efficiency (finv): Comparison between adiabatic pulses for use in MP2RAGE-based T1-mapping

Accuracy in MP2RAGE-based T1-mapping relies on knowledge of the imperfect inversion efficiency (finv) of the inversion pulse. Here we map the inversion efficiency of different adiabatic inversion pulses in human brain at 7T. We identified a mean finv=0.86, which is substantially lower than the finv=0.96 typically assumed in MP2RAGE. We further observed a lower finv in white matter (WM) than in the

Comparison of MRI methods for measuring whole-brain oxygen extraction fraction under different geometric conditions at 7T

Background and Purpose: Cerebral tissue oxygenation is a critical brain viability parameter, and the magnetic properties of hemoglobin offer the opportunity to noninvasively quantify oxygen extraction fraction (OEF) by magnetic resonance imaging (MRI). Ultrahigh-field MRI shows advantages such as increased sensitivity to magnetic susceptibility differences and improved signal-to-noise ratio that c

Persistently egalitarian? Swedish income inequality in 1613 and the four-estate parliament

There is a widespread perception that present-day Nordic egalitarianism is the outcome of a long historical continuity, where the strong political position of peasant farmers and weak feudalism were marking characteristics of pre-industrial society. However, little empirical evidence so far exists on the distribution of income for the early modern period. In this paper, we draw on the schedule and

A Comparative Study of the Innate Humoral Immune Response to Avian Influenza Virus in Wild and Domestic Mallards

Domestic mallards (Anas platyrhynchos domesticus) are traditionally used as a model to investigate infection dynamics and immune responses to low pathogenic avian influenza viruses (LPAIVs) in free-living mallards. However, it is unclear whether the immune response of domestic birds reflects the response of their free-living counterparts naturally exposed to these viruses. We investigated the exte

Exploring the potential of the glycerol-3-phosphate dehydrogenase 2 (GPD2) promoter for recombinant gene expression in Saccharomyces cerevisiae

A control point for keeping redox homeostasis in Saccharomyces cerevisiae during fermentative growth is the dynamic regulation of transcription for the glycerol-3-phosphate dehydrogenase 2 (GPD2) gene. In this study, the possibility to steer the activity of the GPD2 promoter was investigated by placing it in strains with different ability to reoxidise NADH, and applying different environmental con

Measurable time is governable time: Exploring temporality and time governance in childcare social work

This article deals with the workings of time governance in welfare professional settings. A contribution is made to current literature by offering insights into how ‘governing by the clock’ works at the micro-level in everyday interaction and why clock time is purposeful for the operation of power in a welfare bureaucratic context. The main argument posited is that measurability and decontextualis

Coping with Chronic Warfare : The Athenian Experience

In Classical Athens, being at war was more common than peace. The military expenditures were correspondingly large. The main puzzle, however, is notfinancial, but where the Athenians found the multitude of rowers needed for their ships. It was not until the end of the Peloponnesian War that there were good reasons to use slaves as rowers. The Spartan occupation of Decelea in 413 BCE had profound eIn Classical Athens, being at war was more common than peace. The military expenditures were correspondingly large. The main puzzle, however, is not financial, but where the Athenians found the multitude of rowers needed for their ships. It was not until the end of the Peloponnesian War that there were good reasons to use slaves as rowers. The Spartan occupation of Decelea in 413 BCE had profound

Ethical Orientation and Research Misconduct Among Business Researchers Under the Condition of Autonomy and Competition

The topics of ethical conduct and governance in academic research in the business field have attracted scientific and public attention. The concern is that research misconduct in organizations such as business schools and universities might result in practitioners, policymakers, and researchers grounding their decisions on biased research results. This study addresses ethical research misconduct b

Time-resolved luminescence spectroscopy of ultrafast emissions in BaGeF6

Phase-pure crystalline micropowder samples of BaGeF6 were prepared and studied under excitation by tuneable synchrotron radiation and 10 keV electron beam. Time-resolved photoluminescence emission and excitation spectra and a set of single emission decay curves were recorded at 7 K for the exciting photon energy region of 4.3–45 eV. Several intrinsic emissions were revealed in BaGeF6 and their ori