We report systematic investigation of duplex DNA complexes with minor groove binders (Hoechst 33258, Hoechst 33342, Netropsin and DAPI) and intercalators (daunomycin, doxorubicin, actinomycin D, ethidium, cryptolepine, neocryptolepine, m-Amsacrine, proflavine, ellipticine and mitoxantrone) by ESI-MS and ESI-MS/MS in the negative ion mode and in the positive ion mode. The apparent solution phase...

We extend an existing one dimensional simulation model for avalanche mode RPCs by the inclusion of diffusion and space charge effects. We investigate the influence of space charge on charge spectra, signal rise time, time resolution and charge-to-time correlation. We present a 1.5-dimensional model, which allows fast simulation of events and a two dimensional model that is slower but allows to ...

Positive charge pumps, also known as inductor-less DC/DC converters, are very common in white LED drivers. They are less expensive and simpler to use, but they usually achieve a lower efficiency than inductor-based boost circuits. In this paper, we describe a novel negative charge-pump design for a white LED driver that can automatically select the 1X/1.5X mode. Unlike a conventional positive c...

To find a primary factor determining Tc and a pairing mechanism in high-Tc cuprates, we combine the muon spin relaxation results on ns/m∗ (superconducting carrier density/effective mass), accumulated over the last 17 years, with the results from neutron and Raman scattering, scanning tunnelling microscopy, specific heat, Nernst effect, and angle-resolved photoemission spectroscopy measurements....

Self-sustained current oscillations in weakly coupled superlattices are studied by means of a self-consistent microscopic model of sequential tunneling, naturally including boundary conditions. Well-to-well hopping and recycling of charge monopole domain walls produce current spikes—high-frequency modulation— superimposed on the oscillation. For highly doped injecting contacts, the self-oscilla...