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461 results:
  • 121. PTB Seminar on the international comparability of pH value measurements  
    Date: 18.09.1996
    Percental score: 7 %
    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  
  • 122. Dosimetry up to an altitude of 30 km  
    Date: 29.12.2011
    Percental score: 7 %
    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  
  • 123. Afterwards  
    Date: 24.11.2023
    Percental score: 7 %
    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  
  • 124. kcs07 en  
    Date: 08.03.2011
    Percental score: 7 %
    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  
  • 125. Touring exhibition on Hermann von Helmholtz  
    Date: 13.06.1997
    Percental score: 7 %
    This year it is 50 years since the Physikalisch-Technische Bundesanstalt (PTB) was established in Braunschweig. On this occasion, a series of events will be held from July 3 to 5, 1997. On July 3,  
  • 126. Quality Assurance for Radiation Therapy in Belgium Based on Alanine/ESR dosimetry  
    Date: 04.01.2010
    Percental score: 7 %
    In Belgium, a project started this year for quality assurance in radiotherapy, the so-called BeldART project (Belgian dosimetry audits in radiotherapy). The dosimetry measurement system employed by  
  • 127. Download GUM2DFT  
    Date: 16.02.2022
    Percental score: 7 %
    Name GUM2DFTType PythonDate 24.09.2021 Background The Fourier transform and its counterpart for discrete time signals, the DFT, are common tools in measurement science and application. Although  
  • 128. strhlq  
    Date: 09.01.2015
    Percental score: 6 %
    strhlq Radiation qualities used for studies in radiation protection Physikalisch-Technische Bundesanstalt ISO narrow - spectrum series PTB code A 10 A 15 A 20 A 25 A 30 A 40 A 60 A 80 A 100 A  
  • 129. Differences in the sound reduction in test facilities and in buildings  
    Date: 15.03.2007
    Percental score: 6 %
    It was shown by scaled model measurements that in test facilities, homogeneous building elements have a larger sound reduction than in real buildings. This is a broadband effect which decreases  
  • 130. Detection of anisotropy in the optical constants of quartz crystals for soft X-rays  
    Date: 18.03.2021
    Percental score: 6 %
    Quartz is an important substrate material for semiconductor structures and is used in a wide variety of industrial fields, for example as a substrate for various mirrors, nanostructures or other  
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