Welcome to the Open Access Repository of the Physikalisch-Technische Bundesanstalt (PTB-OAR)

PTB is the national metrology institute of the Federal Republic of Germany.

This database grants free access to a number of documents and factual datasets that were elaborated at PTB. This includes publications such as the "PTB-Mitteilungen", the metrological expert journal of PTB, and numerous of documents from the field of legal metrology.

Please use the search function or the category selection on the right-hand side to find the publications you are looking for.

When downloading the publications, please take the license conditions for further use into account.

All Resources

Alpha-Synuclein in Parkinson’s Disease, Spreading of injected alpha-synuclein fibrils to and within cerebella of a transgenic PD mouse model (2021); Su, Elena; DOI: 10.7795/320.202107
The TILSAM method adapted into Optical Gas Standards - complementing gaseous reference materials (2021); Werhahn, Olav; Petersen, Jan C.; Nwaboh, Javis; Pogány, Andrea; Qu, Zhechao; DOI: 10.7795/EMPIR.16ENG05.CA.20211013
The thorium-229 low-energy isomer and the nuclear clock (2021); Beeks, Kjeld; Sikorsky, Tomas; Schumm, Thorsten; Thielking, Johannes; Okhapkin, Maxim V.; et al. DOI: 10.7795/120.20211006
Additional data for the publication "The blackbody radiation shift in strontium lattice clocks revisited" (2021); Lisdat, Christian; Dörscher, Sören; Nosske, Ingo; Sterr, Uwe; DOI: 10.7795/720.20210928
Measurement and simulation data for "Identification of aliasing effects in measurements of unknown MTFs" (2021); Schake, Markus; Schulz, Michael; DOI: 10.7795/710.20210915
To get to the point, Neural Network application to key-point detection in radiographs (2021); Schott, Constantin Tilman; DOI: 10.7795/320.202106
Höhle mit Geheimnissen, Karstgewässeruntersuchung in der Križna Jama mittels selbst entwickelter Methoden (2021); Kausch, Leon; Grumann, Moritz; Nitsche, Leon; DOI: 10.7795/320.202105
Die Erfassung von Beobachtungsdaten anhand der Erdmagnetfeldmessung in der PTB und Aspekte von Systemstandards, Sicherheit, Nachhaltigkeit und Qualitätssicherung (2021); Harcken, Hans; DOI: 10.7795/130.20210901
Final report on the project Volume Determination in the Microlitre Range (2021); Wolf, Henning; DOI: 10.7795/110.20210906
Nationaler DKD-Ringvergleich an einer Kugelplatte 620 mm x 620 mm : Vergleichsbericht DKD-V 4-4 (2021); Kniel, Karin; Hirsch, Jürgen; Bartscher, Markus; DOI: 10.7795/550.20210820
Ermittelte Regeln und Erkenntnisse des Regelermittlungsausschusses nach § 46 des Mess- und Eichgesetzes, Stand: 22. März 2021 (2021); Regelermittlungsausschuss bei der Physikalisch-Technischen Bundesanstalt (PTB), Braunschweig; DOI: 10.7795/510.20210714
Sound intensity and sound pressure values after measurements in various surrounding environments. (2021); Brezas, Spyros; Wittstock, Volker; Heisterkamp, Fabian; DOI: 10.7795/20210723
Puls-Elektrometer-Verstärker zur parallelen Messung von Strom und Ladung (2021); Buchholz, Gerd; DOI: 10.7795/130.20210610
Specifications and testing strategies for measurement devices for noise exposure determination in the infrasound frequency range (2021); Kling, Christoph; Koch, Christian; Rust, Marvin; Barham, Richard; Rodrigues, Dominique; et al. DOI: 10.7795/EMPIR.19ENV03.RE.20210609
PTB-Anforderungen 1.04 „Distanzmessgeräte“. Ausgabe April 2021 (2021); Physikalisch-Technische Bundesanstalt (PTB); DOI: 10.7795/510.20210503