Intense laser fields are known to induce strong ionization in atoms. In nanoclusters, ionization is only stronger, resulting in very high charge densities that lead to Coulomb explosion and emission of accelerated highly charged ions. In such a strongly ionized system, it is neither conceivable nor intuitive that energetic negative ions can originate. Here we demonstrate that in a dense cluster...

The protein product of the CUP1 locus in Cu-resistant Saccharomyces cerevisiae has been purified and characterized. The protein was found to lack the first 8 amino acids predicted by the nucleotide sequence of the gene. The residues removed from the amino-terminal region include 5 hydrophobic residues, two of which are aromatic. The unique amino terminus starting at Gln9 of the putative DNA tra...

The deleterious effects of disorder are amplified in lower dimensions, where long-range coherence is, at best, only marginally stable. A case in point is the destruction of superconductivity in ultrathin granular' and continuous metal films. The disorder is parametrized by the film sheet resistance and the data suggest a zero-temperature threshold for quenching global superconducting coherence ...

activation probe G.Bonheure, M.Hult, A.Fenyvesi, S.Äkäslompolo, D.Carralero, D.Degering, A.de-Vismes Ott, M.Garcia-Munoz, B.Gmeiner, A.Herrmann, M.Laubenstein, G.Lutter, J. Mlynar, H.W.Mueller, V.Rohde, W.Suttrop, G.Tardini and the ASDEX Upgrade Team ERM-KMS, B-1000 Brussels, Belgium, Partner in the Trilateral Euregio Cluster EC-JRC-IRMM, Retieseweg 111, B-2440 Geel, Belgium Nuclear Research In...

Understanding the corrosion of uranium is important for its safe, long-term storage. Uranium metal corrodes rapidly in air, but the exact mechanism remains subject to debate. Atom Probe Tomography was used to investigate the surface microstructure of metallic depleted uranium specimens following polishing and exposure to moist air. A complex, corrugated metal-oxide interface was observed, with ...

BACKGROUND Few attempts were made for alleviating the physical/psychological problems among the cardiac valve-replaced patients and no comprehensive study was done based on the experiences of such patients. This study was undertaken to describe the stressful experiences of the heart valve-replaced patients. MATERIALS AND METHODS In this qualitative study performed during 2012-2013 with a cont...

Introduction Conclusions References Tables Figures Back Close Full Screen / Esc This discussion paper is/has been under review for the journal Atmospheric Chemistry and Physics (ACP). Please refer to the corresponding final paper in ACP if available. Abstract Introduction Conclusions References Tables Figures Back Close Full Screen / Esc Abstract Effect of the exclusion of crustal ions (Ca 2+ ,...

We combined the hybrid density functional theory (DFT) calculations and X-ray absorption spectroscopy (XAS) experiments in study of local atomic structure around Ir ions ZnO thin films with different iridium content.

Binding of lactoferrin (Lf) to its membrane receptors requires an electron for the reduction of Fe(3+)LF to Fe(2+)LF. It is possible that glyceraldehyde -3-phosphate dehydrogenase, a glycolytic enzyme part of the erythrocyte membrane, delivers that electron. Then Lf, obtaining an electron from the coenzyme NADH, might stimulate glycolysis, which requires the oxidised state of the coenzyme NAD+....

Intact cells of Streptococcus faecalis and Micrococcus lysodeikticus were found to have high-frequency electric conductivities of 0.90 and 0.68 mho/m, respectively. These measured values, which reflect movements of ions both within the cytoplasm and within the cell wall space, were only about one-third of those calculated on the basis of determinations of the amounts and types of small ions wit...