X-ray properties of the quasar HE0450-2958

We present an {\it XMM-Newton} EPIC observation of HE0450-2958 which may be a ``naked''quasar as suggested by Magain et al. The \xmm EPIC spectra show a substantial soft X-ray excess, a steep photon index, as well as marginal evidence for a weak Fe K$\alpha$ line. The X-ray absorption is consistent with the galactic level. The 0.3-10 keV EPIC spectra can be fitted by a power law plus a blackbody model, however, the fit by the relativistically blurred photoionized disc reflection is better. We estimate the black hole mass of $2^{+7}_{-1.3} \times 10^{7} M_{\odot}$ from the X-ray variability. This broadly agrees with the value derived from the optical \hb line width. These results support a high-state Seyfert galaxy of the source. HE0450-2958 shares similar properties of transitionary objects from ultra-luminous infrared galaxies to quasars. We suggest that HE0450-2958 is just in the beginning of an optical quasar window.Comment: 23 pages, 8 figures, AJ in pres

Klinische Myokardinfarktforschung mit einem stoerfeldunempfindlichen Hoch-T_c-SQUID-System. Teilvorhaben: Grundlegende technische und medizinische Untersuchungen Abschlussbericht

A measurement system for the recording of magnetocardiograms (MCG) in unshielded clinical environment has been developed and tested with respect to its utilizability. For the first time worldwide it was possible to acquire MCG signals of patients on an intensive care unit of a hospital with this system. Planar High-T_c dc SQUID gradiometers with a noise limited field gradient resolution <2.5 pT/cm#sq root#Hz (at 1 Hz, 77 K) in unshielded operation are the basis of the measurement system. The measurements in unshielded environment are made possible by various components such as, for example, special measurement and additional reference sensors, possibility for heating the sensors and ECG triggered accumulation of raw data. (orig.)Available from TIB Hannover: F00B945+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEBundesministerium fuer Bildung und Forschung (BMBF), Bonn (Germany)DEGerman

Synthesis and Characterization of Mononuclear, Pseudotetrahedral Cobalt(III) Compounds

The preparation and characterization of two mononuclear cobalt(III) tropocoronand complexes, [Co(TC-5,5)](BF[subscript 4]) and [Co(TC-6,6)](BPh[subscript 4]), are reported. The cobalt(III) centers exist in rare pseudotetrahedral conformations, with twist angles of 65° and 74° for the [Co(TC-5,5]+ and [Co(TC-6,6)]+ species, respectively. Structural and electrochemical characteristics are compared with those of newly synthesized [Ga(TC-5,5)](GaCl[subscript 4]) and [Ga(TC-6,6)](GaCl[subscript 4]) analogues. The spin state of the pseudotetrahedral [Co(TC-6,6)](BPh[subscript 4]) compound was determined to be S = 2, a change in spin state from the value of S = 1 that occurs in the square-planar and distorted square-planar complexes, [Co(TC-3,3)](X) (X = BPh[subscript 4], BAr′[subscript 4]) and [Co(TC-4,4)](BPh[subscript 4]), respectively.National Science Foundation (U.S.) (Grant CHE0907905)National Institutes of Health (U.S.) (Grant 1S10RR013886-01

2020 roadmap on solid-state batteries

Li-ion batteries have revolutionized the portable electronics industry and empowered the electric vehicle (EV) revolution. Unfortunately, traditional Li-ion chemistry is approaching its physicochemical limit. The demand for higher density (longer range), high power (fast charging), and safer EVs has recently created a resurgence of interest in solid state batteries (SSB). Historically, research has focused on improving the ionic conductivity of solid electrolytes, yet ceramic solids now deliver sufficient ionic conductivity. The barriers lie within the interfaces between the electrolyte and the two electrodes, in the mechanical properties throughout the device, and in processing scalability. In 2017 the Faraday Institution, the UK's independent institute for electrochemical energy storage research, launched the SOLBAT (solid-state lithium metal anode battery) project, aimed at understanding the fundamental science underpinning the problems of SSBs, and recognising that the paucity of such understanding is the major barrier to progress. The purpose of this Roadmap is to present an overview of the fundamental challenges impeding the development of SSBs, the advances in science and technology necessary to understand the underlying science, and the multidisciplinary approach being taken by SOLBAT researchers in facing these challenges. It is our hope that this Roadmap will guide academia, industry, and funding agencies towards the further development of these batteries in the future