118 results match your criteria: "Karlsruhe Institute of Technology: Karlsruher Institut fur Technologie[Affiliation]"
Phys Rev Lett
November 2015
J. Stefan Institute, 1000 Ljubljana.
We report the first observation of the decays B^{0}→pΛ[over ¯]D^{(*)-}. The data sample of 711 fb^{-1} used in this analysis corresponds to 772×10^{6} BB[over ¯] pairs, collected at the ϒ(4S) resonance by the Belle detector at the KEKB asymmetric-energy e^{+}e^{-} collider. We observe 19.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
November 2015
Department of Interface Physics, University of Leipzig, Linnéstrasse 5, 04103 Leipzig (Germany).
Diffusion in nanoporous host-guest systems is often considered to be too complicated to comply with such "simple" relationships as Fick's first and second law of diffusion. However, it is shown herein that the microscopic techniques of diffusion measurement, notably the pulsed field gradient (PFG) technique of NMR spectroscopy and microimaging by interference microscopy (IFM) and IR microscopy (IRM), provide direct experimental evidence of the applicability of Fick's laws to such systems. This remains true in many situations, even when the detailed mechanism is complex.
View Article and Find Full Text PDFPhys Rev Lett
September 2015
J. Stefan Institute, 1000 Ljubljana, Slovenia.
We report a measurement of the time-dependent CP asymmetry of B[over ¯]^{0}→D_{CP}^{(*)}h^{0} decays, where the light neutral hadron h^{0} is a π^{0}, η, or ω meson, and the neutral D meson is reconstructed in the CP eigenstates K^{+}K^{-}, K_{S}^{0}π^{0}, or K_{S}^{0}ω. The measurement is performed combining the final data samples collected at the ϒ(4S) resonance by the BABAR and Belle experiments at the asymmetric-energy B factories PEP-II at SLAC and KEKB at KEK, respectively. The data samples contain (471±3)×10^{6} BB[over ¯] pairs recorded by the BABAR detector and (772±11)×10^{6} BB[over ¯] pairs recorded by the Belle detector.
View Article and Find Full Text PDFPhys Rev Lett
April 2015
Center for Experimental Nuclear Physics and Astrophysics, and Department of Physics, University of Washington, Seattle, Washington 98195, USA.
It has been understood since 1897 that accelerating charges must emit electromagnetic radiation. Although first derived in 1904, cyclotron radiation from a single electron orbiting in a magnetic field has never been observed directly. We demonstrate single-electron detection in a novel radio-frequency spectrometer.
View Article and Find Full Text PDFPhys Rev Lett
April 2015
J. Stefan Institute, 1000 Ljubljana.
We report the measurement of the direct CP asymmetry in the radiative B¯→X(s+dγ) decay using a data sample of (772 ± 11)×10(6) BB[over ¯] pairs collected at the ϒ(4S) resonance with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The CP asymmetry is measured as a function of the photon energy threshold. For Eγ*≥2.
View Article and Find Full Text PDFInorg Chem
April 2015
†Institut für Anorganische Chemie, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, D-76131 Karlsruhe, Germany.
[BMIm]2[{PbMn(CO)5)}6I8] (BMIm: 1-butyl-3-methylimidazolium) is obtained by ionic liquid mediated reaction of PbI2 and Mn2(CO)10. Central is a cubelike (Pb6I8) unit containing a nonfilled Pb6 octahedron. Each Pb of this (Pb6I8) unit is terminated on its outside by Mn(CO)5, exhibiting Pb-Mn metal-to-metal bonding (280 pm).
View Article and Find Full Text PDFKlin Monbl Augenheilkd
December 2014
Klinik und Poliklinik für Augenheilkunde, Universität Rostock.
Background: The high resolution of corneal confocal microscopy (CCM) allows in vivo imaging of the corneal sub-basal nerve plexus (SNP). The field of view of a single CCM image (0.16 mm²) is not sufficient for the reliable morphometric characterisation of the SNP.
View Article and Find Full Text PDFJ Org Chem
January 2015
†Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany.
The synthesis and characterization of soluble azaiptycenes is reported. Optical and physical properties were studied and compared with those of the structurally consanguine azaacenes. Electrochemical experiments and quantum-chemical calculations revealed the electronic structure of the iptycene derivatives.
View Article and Find Full Text PDFScience
November 2014
China National GeneBank, BGI-Shenzhen, China. BGI-Shenzhen, China.
Insects are the most speciose group of animals, but the phylogenetic relationships of many major lineages remain unresolved. We inferred the phylogeny of insects from 1478 protein-coding genes. Phylogenomic analyses of nucleotide and amino acid sequences, with site-specific nucleotide or domain-specific amino acid substitution models, produced statistically robust and congruent results resolving previously controversial phylogenetic relations hips.
View Article and Find Full Text PDFPhys Rev Lett
July 2014
Budker Institute of Nuclear Physics SB RAS and Novosibirsk State University, Novosibirsk 630090.
We present the first model-independent measurement of the absolute branching fraction of the Λ(c)(+) → pK(-)π(+) decay using a data sample of 978 fb(-1) collected with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The number of Λ(c)(+) baryons is determined by reconstructing the recoiling D((*)-) pπ(+) system in events of the type e(+)e(-) → D((*)-) pπ(+)Λ(c)(+). The branching fraction is measured to be B(Λ(c)(+) → pK(-)π(+)) = (6.
View Article and Find Full Text PDFPhys Rev Lett
March 2014
Institut für Experimentelle Kernphysik, Karlsruher Institut für Technologie, 76131 Karlsruhe.
We observe D(0)-D(0) mixing in the decay D(0) → K+π- using a data sample of integrated luminosity 976 fb(-1) collected with the Belle detector at the KEKB e+e- asymmetric-energy collider. We measure the mixing parameters x'(2) = (0.09 ± 0.
View Article and Find Full Text PDFThe lifetime of the τ lepton is measured using the process e+ e- → τ+ τ- , where both τ leptons decay to 3πν(τ). The result for the mean lifetime, based on 711 fb(-1) of data collected with the Belle detector at the ϒ(4S) resonance and 60 MeV below, is τ=(290.17±0.
View Article and Find Full Text PDFChem Biodivers
February 2012
Institut für Ingenieurbiologie und Biotechnologie des Abwassers, Karlsruher Institut für Technologie, Am Fasanengarten, D-76131 Karlsruhe.
Biowaste digestion is a possibility to gain biogas as a renewable fuel source. However, the anaerobic food chain may be disrupted by, e.g.
View Article and Find Full Text PDFSmall
February 2012
Karlsruher Institut für Technologie (KIT), Institut für Nanotechnologie (INT), Karlsruhe Nano Micro Facility (KNMF), 76021 Karlsruhe Germany.
Multiple-allergen testing for high throughput and high sensitivity requires the development of miniaturized immunoassays that allow for a large test area and require only a small volume of the test analyte, which is often available only in limited amounts. Developing such miniaturized biochips containing arrays of test allergens needs application of a technique able to deposit molecules at high resolution and speed while preserving its functionality. Lipid dip-pen nanolithography (L-DPN) is an ideal technique to create such biologically active surfaces, and it has already been successfully applied for the direct, nanoscale deposition of functional proteins, as well as for the fabrication of biochemical templates for selective adsorption.
View Article and Find Full Text PDFSmall
July 2011
Karlsruhe Nano Micro Facility, Karlsruher Institut für Technologie, 76344 Karlsruhe, Germany.
Dip-pen nanolithography (DPN) has been extensively used before for patterning surfaces; however a complete understanding of the ink transport mechanisms is still lacking. Moreover, quality control of the fabricated structures is a bottleneck in DPN fabrication, and one aspect of this is the quantification of the ink mass transfer to the substrate during the lithographic process. There is a demand for measuring the exact amount of molecules deposited on a surface by lithographic methods, especially for biological applications.
View Article and Find Full Text PDFJ Chem Theory Comput
February 2011
Institut für Physikalische Chemie, Karlsruher Institut für Technologie, Kaiserstraβe 12, 76131 Karlsruhe, Germany, and Faculty of Science and Technology and MESA+ Research Institute, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands.
The simplest cyanine dye series [H2N(CH)nNH2](+) with n = 1, 3, 5, 7, and 9 appears to be a challenge for all theoretical excited-state methods since the experimental spectra are difficult to predict and the observed deviations cannot be easily explained with standard arguments. We compute here the lowest vertical excitation energies of these dyes using a variety of approaches, namely, complete active space second-order perturbation theory (CASPT2), quantum Monte Carlo methods (QMC), coupled cluster linear response up to third approximate order (CC3), and various flavors of time-dependent density functional theory (TDDFT), including the recently proposed perturbative correction scheme (B2PLYP). In our calculations, all parameters such as basis set, active space, and geometry dependence are carefully analyzed.
View Article and Find Full Text PDFBundesgesundheitsblatt Gesundheitsforschung Gesundheitsschutz
August 2010
Institut für Biomedizinische Technik, Karlsruher Institut für Technologie, Karlsruhe, Deutschland.
Despite basic physiologic principles being well known for more than 300 years, the diagnosis and therapy of cardiovascular diseases are still in their early beginnings. For example, 100 years ago sudden cardiac arrest was regarded as the result of toxic gases. The diagnosis of ventricular fibrillation or treatment with a defibrillator are very recent developments.
View Article and Find Full Text PDFNano Lett
January 2010
Karlsruher Institut fur Technologie, Institut fur Nanotechnologie, Karlsruhe, Germany.
Nanoporous Au-Pt alloys with pore- and ligament size down to few nanometers were fabricated by dealloying Ag-Au-Pt. Owing to the small structure size and large specific surface area, the surface stress and its variation give rise to significant stress and strain in the bulk of these materials. In fact, dilatometry experiments find electrochemical actuation with large reversible strain amplitude.
View Article and Find Full Text PDF