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439 results:
  • 101. A new figure of merit for noise in clinical X-ray images illustrated on a mammography application  
    Date: 21.12.2022
    Percental score: 9 %
    Modern image processing and reconstruction procedures require image quality metrics that work without the need for a linear, shift‑invariant system. In collaboration with external partners,  
  • 102. Traceable particle size measurements of non-spherical nanoparticles  
    Date: 23.05.2022
    Percental score: 9 %
    Small-angle X-ray scattering (SAXS) is ideally suited for the traceable determination of the size or size distribution of nanoparticles. At PTB, monochromatized X-rays from the four-crystal  
  • 103. 4.21 Form and Wavefront Metrology  
    Date: 03.06.2020
    Percental score: 9 %
    Selected publications The working group offers the following calibrations: Sphericity and radius measurement of sperical sections Refractive index measurement Transmission measurement on  
  • 104. A Prize for PTB Nanometrologist  
    Date: 16.07.2007
    Percental score: 9 %
    Thorsten Dziomba, a young PTB scientist, has been awarded the title "The Best Young Metrologist of COOMET". His presentation convinced the high-ranking committee, among them the  
  • 105. Determination of the angular distribution of backscattered particles at the ion accumulation experiment  
    Date: 26.09.2006
    Percental score: 9 %
    A monitor was developed for the measurement of sputtered and reflected particles to determine the mass contribution of particles which are backscattered through the entry hole of the collector at  
  • 106. PTB Seminar on the international comparability of pH value measurements  
    Date: 18.09.1996
    Percental score: 9 %
    As a measure of the acid or alkaline quality of a solution, the pH value is an important measurand as, among other things, in process technology, medicine and environmental protection. The  
  • 107. Integration von π-Kontakten in Josephson-Qubits und Einzelflussquanten-Strukturen  
    Date: 05.12.2007
    Percental score: 9 %
    The remarkable property of exhibiting an additional phase drop of π found in the superconductor-ferromagnet-superconductor (SFS) Josephson junctions of certain thickness of the ferromagnetic layer  
  • 108. Dosimetry up to an altitude of 30 km  
    Date: 29.12.2011
    Percental score: 9 %
    Since the beginning of the 1990s, PTB has carried out dosimetric investigations of the secondary cosmic radiation in the atmosphere. In the course of time, the measuring instruments became more and  
  • 109. Afterwards  
    Date: 24.11.2023
    Percental score: 9 %
    Around the world in 55 days Arrival in Townsville (Pictures: Rieke Schäfer) Since Monday evening I’ve been back in Braunschweig, and my trip is now completed. As my flight from Townsville to  
  • 110. kcs07 en  
    Date: 08.03.2011
    Percental score: 9 %
    kcs07 en K-40 and Cs-137 in ground-level air in Braunschweig 2007 1,0 New Year's Eve firework (KClO4) New Year's Eve firework (KClO4) week 31: much dust, (highway reconstruction site at ca. 1 km  
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