37 research outputs found

    Viking Age garden plants from southern Scandinavia: diversity, taphonomy and cultural aspects

    Get PDF
    Plant finds recovered from archaeological sites in southern Scandinavia dated to the Viking Age reflect the diversity of useful plants that were cultivated and collected. This review presents the results of 14 investigations of deposits that are dated between AD 775 and 1050. The site types are categorized as agrarian, urban, military and burials. Garden plants are unevenly distributed, as the greatest diversity is recorded in features from urban contexts. We argue that taphonomic processes played an important role in the picture displayed. Archaeobotanical research results from neighbouring regions suggest that Viking Age horticulture has its roots in older traditions, and that the spectrum of garden plants is influenced by central and north-western European horticultural customs, which were to a great extent shaped by Roman occupation

    Perspectives in visual imaging for marine biology and ecology: from acquisition to understanding

    Get PDF
    Durden J, Schoening T, Althaus F, et al. Perspectives in Visual Imaging for Marine Biology and Ecology: From Acquisition to Understanding. In: Hughes RN, Hughes DJ, Smith IP, Dale AC, eds. Oceanography and Marine Biology: An Annual Review. 54. Boca Raton: CRC Press; 2016: 1-72

    Multiethnic Meta-Analysis Identifies RAI1 as a Possible Obstructive Sleep Apnea-related Quantitative Trait Locus in Men.

    Get PDF
    Obstructive sleep apnea (OSA) is a common heritable disorder displaying marked sexual dimorphism in disease prevalence and progression. Previous genetic association studies have identified a few genetic loci associated with OSA and related quantitative traits, but they have only focused on single ethnic groups, and a large proportion of the heritability remains unexplained. The apnea-hypopnea index (AHI) is a commonly used quantitative measure characterizing OSA severity. Because OSA differs by sex, and the pathophysiology of obstructive events differ in rapid eye movement (REM) and non-REM (NREM) sleep, we hypothesized that additional genetic association signals would be identified by analyzing the NREM/REM-specific AHI and by conducting sex-specific analyses in multiethnic samples. We performed genome-wide association tests for up to 19,733 participants of African, Asian, European, and Hispanic/Latino American ancestry in 7 studies. We identified rs12936587 on chromosome 17 as a possible quantitative trait locus for NREM AHI in men (N = 6,737; P = 1.7 × 10 <sup>-8</sup> ) but not in women (P = 0.77). The association with NREM AHI was replicated in a physiological research study (N = 67; P = 0.047). This locus overlapping the RAI1 gene and encompassing genes PEMT1, SREBF1, and RASD1 was previously reported to be associated with coronary artery disease, lipid metabolism, and implicated in Potocki-Lupski syndrome and Smith-Magenis syndrome, which are characterized by abnormal sleep phenotypes. We also identified gene-by-sex interactions in suggestive association regions, suggesting that genetic variants for AHI appear to vary by sex, consistent with the clinical observations of strong sexual dimorphism

    Photon beam asymmetry Sigma for eta and eta ' photoproduction from the proton

    Get PDF
    Measurements of the linearly-polarized photon beam asymmetry Σ\Sigma for photoproduction from the proton of η\eta and η\eta^\prime mesons are reported. A linearly-polarized tagged photon beam produced by coherent bremsstrahlung was incident on a cryogenic hydrogen target within the CEBAF Large Acceptance Spectrometer. Results are presented for the γpηp\gamma p \to \eta p reaction for incident photon energies from 1.070 to 1.876 GeV, and from 1.516 to 1.836 GeV for the γpηp\gamma p \to \eta^\prime p reaction. For γpηp\gamma p \to \eta p, the data reported here considerably extend the range of measurements to higher energies, and are consistent with the few previously published measurements for this observable near threshold. For γpηp\gamma p \to \eta^\prime p, the results obtained are consistent with the few previously published measurements for this observable near threshold, but also greatly expand the incident photon energy coverage for that reaction. Initial analysis of the data reported here with the Bonn-Gatchina model strengthens the evidence for four nucleon resonances -- the N(1895)1/2N(1895)1/2^-, N(1900)3/2+N(1900)3/2^+, N(2100)1/2+N(2100)1/2^+ and N(2120)3/2N(2120)3/2^- resonances -- which presently lack the "four-star" status in the current Particle Data Group compilation, providing examples of how these new measurements help refine models of the photoproduction process.Comment: 10 pages, 3 figure

    Semi-inclusive pi(0) target and beam-target asymmetries from 6 GeV electron scattering with CLAS

    Get PDF
    We present precision measurements of the target and beam-target spin asymmetries from neutral pion electroproduction in deep-inelastic scattering (DIS) using the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab. We scattered 6-GeV, longitudinally polarized electrons off longitudinally polarized protons in a cryogenic 14^{14}NH3_3 target, and extracted double and single target spin asymmetries for epeπ0Xep\rightarrow e^\prime\pi^0X in multidimensional bins in four-momentum transfer (1.0<Q2<3.21.0<Q^2<3.2 GeV2^2), Bjorken-xx (0.12<x<0.480.12<x<0.48), hadron energy fraction (0.4<z<0.70.4<z<0.7), transverse pion momentum (0<PT<1.00<P_T<1.0 GeV), and azimuthal angle ϕh\phi_h between the lepton scattering and hadron production planes. We extracted asymmetries as a function of both xx and PTP_T, which provide access to transverse-momentum distributions of longitudinally polarized quarks. The double spin asymmetries depend weakly on PTP_T. The sin2ϕh\sin 2\phi_h moments are zero within uncertainties, which is consistent with the expected suppression of the Collins fragmentation function. The observed sinϕh\sin\phi_h moments suggest that quark gluon correlations are significant at large xx.Comment: 18 preprint pages, 3 figure

    The present and future of QCD

    Get PDF
    This White Paper presents an overview of the current status and future perspective of QCD research, based on the community inputs and scientific conclusions from the 2022 Hot and Cold QCD Town Meeting. We present the progress made in the last decade toward a deep understanding of both the fundamental structure of the sub-atomic matter of nucleon and nucleus in cold QCD, and the hot QCD matter in heavy ion collisions. We identify key questions of QCD research and plausible paths to obtaining answers to those questions in the near future, hence defining priorities of our research over the coming decades

    Towards an archaeology of landscape architecture in the ancient Roman world

    No full text
    In 2 volsSIGLEAvailable from British Library Document Supply Centre- DSC:D180084 / BLDSC - British Library Document Supply CentreGBUnited Kingdo

    The Spinner-IBMM mouse is a new spontaneous mutant in the Tmie gene

    No full text
    A recessively inherited, spontaneous mutation named Spinner-IBMM (SI) was identified in a transgenic mouse colony in our institute. SI mutant mice displayed hyperactivity, including a severe circling behavior, ataxia and inability to swim. Gene mapping revealed that the causative gene was located on a 35 Mb DNA fragment on chromosome 9. Candidate genes sequencing in this DNA fragment identified a new mutant allele in the Tmie gene. The identified mutant is characterized by a nucleotide deletion in exon 5, leading to a frameshift and a premature STOP codon. It has been reported that inactivating mutations in the mouse Tmie gene result in an identical phenotype, probably resulting from defects in the inner ear. However, the exact function of the Tmie protein in the ear and other organs is still unknown. The analysis of this new mouse mutant could contribute to a better understanding of Tmie functions in vivo in the ear and other organs.SCOPUS: ar.jinfo:eu-repo/semantics/publishe
    corecore