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Liste der bei der PTB angezeigten Marken und Herstellerzeichen gemäß § 24 Abs. 6 Waffengesetz (WaffG)
No full textListe der bei der PTB angezeigten Marken und Herstellerzeichen gemäß § 24 Abs. 6 Waffengesetz (WaffG
Liste der bei der PTB zugelassenen Blockiersysteme für Erbwaffen gemäß § 20 Waffengesetz (WaffG)
No full textListe der bei der PTB zugelassenen Blockiersysteme für Erbwaffen gemäß § 20 Waffengesetz (WaffG
CHF3 infrared absorption cross sections (single components)
No full textThis dataset contains infrared absorption cross section spectra of fluoroform (CHF3) in synthetic air at the temperatures 296.90(8) and 296.07(8), and various total and partial pressures in the wavenumber range of 600-1940cm-1. Every spectrum was splitted into 6 regions containing an isolated absorption feature, making a total of 12 *.dat files. Every single file contains a different number of spectra, representing only spectra used in the creation of the corresponding composite spectrum (available at https://doi.org/10.7795/720.20250708).
If the recorded experimental absorption at a certain wavenumber exceeded the cut-off limit (i.e., the spectrum was saturated), its uncertainty was set to 1.00E+10 and absorption cross section itself was set to zero to avoid misreading of empty values. In spectra 1b and 5b absorptions (and, subsequently, cross sections) were manually set to zero due to the remaining CF4 absorption feature around 1280 cm-1 (v3 band); the expanded uncertainties for these points were also manually changed to 1.00E+10 to exclude these points from consideration and weighted averaging. NB: the expanded uncertainty for single components does not include the uncertainty of the absorption path length!Description of the individual files:
Each file contains a three-line header in the following format:
The 1st line is the column name (Wavenumber, Abs_Xsect, Exp_unc, ...), where Abs_Xsect stands for the absorption cross section and Exp_unc means the expanded uncertainty (k=2).
The 2nd line contains the units of the corresponding quantities (cm^-1, cm^2/molecule, cm^2/molecule, ...).
The 3rd line is assigned for column labeling:
* the Wavenumber column has the "empty" label "--";
* Abs_Xsect columns are labeled in the following format: `[number of experimental spectrum]_[total pressure in hPa]_[partial pressure of CHF3 in hPa]`;
* Exp_unc columns are labeled "2sigma" to indicate coverage factor of 2.
Method: FTIR
Format: .dat (TAB as column separator)
Rcommended software: MS Excel, Origin (proprietary), or any text editor (e.g., Notepad)
Parameters: in the filename in the following format: CHF3_[temperature in K]_[total pressure in Torr]_air_[wavenumber interval in cm-1]_[nominal resolution in cm-1]_components.dat and in the 3rd line of header for individual spectrum (see description of the individual files).This work was done within the project “Metrology for climate relevant volatile organic compounds”, MetClimVOC. The project has received funding from EMPIR programme co-financed by the Participating States and from the European Union’s Horizon 2020 research and motivation programme
Liste der bei der PTB zugelassenen Blockiersysteme für Erbwaffen gemäß § 20 Waffengesetz (WaffG)
No full textListe der bei der PTB zugelassenen Blockiersysteme für Erbwaffen gemäß § 20 Waffengesetz (WaffG
Liste der bei der PTB angezeigten Marken und Herstellerzeichen gemäß § 24 Abs. 6 Waffengesetz (WaffG)
No full textListe der bei der PTB angezeigten Marken und Herstellerzeichen gemäß § 24 Abs. 6 Waffengesetz (WaffG
Appendix C
No full textThis DCC is part of the DKD expert report DKD-E 7-3 Instructions on how to use the DCC schema to create a digital calibration certificate for non-automatic weighing instruments, Edition 03/2025, Physikalisch-Technische Bundesanstalt, Braunschweig and Berlin. DOI: https://doi.org/10.7795/550.20250325
This is NOT a real calibration certificate
Appendix B
No full textThis DCC is part of the DKD expert report DKD-E 7-3 Instructions on how to use the DCC schema to create a digital calibration certificate for non-automatic weighing instruments, Edition 03/2025, Physikalisch-Technische Bundesanstalt, Braunschweig and Berlin. DOI: https://doi.org/10.7795/550.20250325
This is NOT a real calibration certificate
Liste der von der PTB erteilten Baumusterprüfbescheinigungen nach Richtlinie 2006/42/EG
No full textListe der von der PTB erteilten Baumusterprüfbescheinigungen nach Richtlinie 2006/42/E
Entwicklung einer biochemischen Redox-Flow Batterie
No full textRedox-Flow Batterien haben ein großes Potential, da die Elektrolyte verlustfrei in großen Mengen gespeichert werden können. Die derzeitig gängigen Batterien basieren zumeist auf Chemikalien, die nur begrenzt zur Verfügung stehen. In dieser Arbeit wird untersucht, ob es möglich ist, die freiwerdende Energie eines biochemischen Prozesses so zu speichern, dass sie anschließend in einer Redox-Flow Batterie zu elektrischer Energie gewandelt werden kann.Junge Wissenschaft. Paper 07/2024In der Jungen Wissenschaft werden Forschungsarbeiten von Schüler/innen, die selbstständig, z.B. in einer Schule oder einem Schülerforschungszentrum, durchgeführt wurden, veröffentlicht
D2: Guide on the use of mass spectrometry for low level radionuclide detection
No full textThis document gives an overview of the role of mass spectrometry for radioactivity measurement and the major measurement considerations. The aim is for this guide to support the measurement of a range of sample matrices and radionuclides, for all applications including nuclear decommissioning, environmental monitoring, nuclear forensics and emergency response scenarios. The guide focuses on mass spectrometric techniques used in the MetroPOEM project for measurement of radioactive samples (ICP-MS and AMS). Other techniques (e.g. GDMS, SIMS, TIMS) are mentioned and there is the potential to extend this guide further. The relative advantages and limitations of mass spectrometric techniques are considered. There is no direct comparison between mass spectrometry and radiometric techniques