Sökresultat

Filtyp

Din sökning på "*" gav 527340 sökträffar

Nyheter bland svenska stångfibblor

The revision of Pilosella presented by the author in 2001 is here updated with new records and taxa, and recent international advancements in the field are briefly presented and discussed. The taxonomy of the previous revision, based on the "genotypic cluster species concept" of Mallet and the principles that species should be circumscribed as groups of individuals whose intermediates are rare and

Feminism

Historic differences in livelihoods, work roles and the access to resources lead to differences in how women and men are exposed to and impacted by climate change. Policymakers and civil society groups have come to realize that gender matters in the governance of climate issues and there is an emerging scholarship in this field. However, the attention is mainly on women, rather than on gender, for

Contribution of stern layer and membrane polarization to the spectral induced polarization of porous media

Recently there is an increasing interest in the understanding of the Spectral Induced Polarization (SIP) phenomenon in porous media. The complex electrical conductivity of porous geological materials has a frequency dependent behavior than can be associated to three main mechanisms: Maxwell-Wagner (MW) polarization, Membrane polarization, Electrical double layer (EDL) polarization. This paper aims

The extreme light infrastructure—attosecond light pulse source (ELI-ALPS) project

Globally, large international research infrastructures have over many decades promoted excellence in science and technology. Aligned with the international practice, the Europe Strategy Forum for Research Infrastructures (ESFRI) has developed and keeps updating a roadmap for research infrastructures. The Extreme Light Infrastructure (ELI) is one of the two large scale Laser Research Infrastructure

No title

REDD is one of the latest additions to a series of incentive-based mechanisms for reducing carbon emissions. Although international negotiations have not eliminated uncertainties regarding its social, economic and political implications, many developing and emerging countries have begun to engage in REDD. Peru, the country with the world’s fourth largest tropical forest area has good reason to par

Laser-Based Investigations of Combustion Phenomena in Gas Turbine Related Burners

Experiments were performed on various combustion devices to investigate the flames employing different optical measurement techniques under atmospheric pressure conditions. Non-intrusive laser-based techniques provided in-situ information concerning different parameters of the combustion process, with a high degree of temporal and spatial resolution. In the thesis work, different parameters of int

Study of ordered hadron chains with the ATLAS detector

The analysis of the momentum difference between charged hadrons in high-energy proton-proton collisions is performed in order to study coherent particle production. The observed correlation pattern agrees with a model of a helical QCD string fragmenting into a chain of ground-state hadrons. A threshold momentum difference in the production of adjacent pairs of charged hadrons is observed, in agree

Measurement of lepton differential distributions and the top quark mass in tt¯ production in pp collisions at √s=8 TeV with the ATLAS detector

This paper presents single lepton and dilepton kinematic distributions measured in dileptonic tt¯ events produced in 20.2fb - 1 of s=8 TeV pp collisions recorded by the ATLAS experiment at the LHC. Both absolute and normalised differential cross-sections are measured, using events with an opposite-charge eμ pair and one or two b-tagged jets. The cross-sections are measured in a fiducial region cor

Micro-Raman spectroscopy for the detection of stacking fault density in InAs and GaAs nanowires

We investigate the relation between crystal stacking faults in individual wurtzite InAs and GaAs nanowires and the intensity of the forbidden longitudinal optical (LO) phonon mode in the Raman spectra. Micro-Raman spectroscopy and transmission electron microscopy are combined on the same individual nanowires to evaluate the LO mode intensity as a function of the stacking fault density. A clear inc

Floquet engineering of long-range p -wave superconductivity : Beyond the high-frequency limit

It has been shown that long-range p-wave superconductivity in a Kitaev chain can be engineered via an ac field with a high frequency [M. Benito, Phys. Rev. B 90, 205127 (2014)PRBMDO1098-012110.1103/PhysRevB.90.205127]. For its experimental realization, however, theoretical understanding of Floquet engineering with a broader range of driving frequencies becomes important. In this paper, focusing on

The large enriched germanium experiment for neutrinoless double beta decay (LEGEND)

The observation of neutrinoless double-beta decay (0νββ) would show that lepton number is violated, reveal that neu-trinos are Majorana particles, and provide information on neutrino mass. A discovery-capable experiment covering the inverted ordering region, with effective Majorana neutrino masses of 15 - 50 meV, will require a tonne-scale experiment with excellent energy resolution and extremely

The contribution of feminist perspectives to climate governance

Feminist analysis focuses on gender relations, thereby it goes beyond a mere focus on women and women’s role in climate governance. While the representation of women in politics and governance is of relevance to such studies, feminist theory makes it possible to also seriously discuss and question the relation between women’s and men’s interests and values in the gender order, and problematize the

Estrogen receptor alpha gene polymorphisms and bone mineral density : haplotype analysis in women from the United Kingdom

Genetic factors are important in the pathogenesis of osteoporosis and the estrogen receptor has been suggested as a possible candidate gene for regulation of bone mineral density (BMD). We investigated the relationship between PvuII, XbaI, and dinucleotide (TA)n repeat polymorphisms of the estrogen receptor alpha (ER-alpha) gene and BMD in a study of women from northeast Scotland in the United Kin

Susceptibility to Paget's disease of bone is influenced by a common polymorphic variant of osteoprotegerin

UNLABELLED: To clarify the role of the TNFRSF11B gene encoding osteoprotegerin (OPG), in Paget's disease of bone (PDB) we studied TNFRSF11B polymorphisms in an association study of 690 UK subjects and in a worldwide familial study of 66 kindreds. We found that the G1181 allele of TNFRSF11B, encoding lysine at codon 3 of the OPG protein, predisposes to both sporadic and familial PDB.INTRODUCTION: P

Liver diseases in Adult Life after Childhood Cancer in Scandinavia (ALiCCS) : A population-based cohort study of 32,839 one-year survivors

Information on late onset liver complications after childhood cancer is scarce. To ensure an appropriate follow-up of childhood cancer survivors and reducing late liver complications, the need for comprehensive and accurate information is presented. We evaluate the risk of liver diseases in a large childhood cancer survivor cohort. We included all 1-year survivors of childhood cancer treated in th

Current evidence of oral anticoagulant reversal : A systematic review

Introduction Approximately 4–6% of patients treated with oral anticoagulants (OAC) will suffer from major hemorrhage or be in need of urgent surgery necessitating anticoagulant reversal therapy. Several new oral anticoagulants and reversal agents have been introduced that make it difficult for physicians to stay updated on the current evidence of reversal management. This study aims to review the