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336 results:
201. Ionizing radiation in diagnostics and therapy  
Date: 23.03.2016
Percental score: 6 %
back Ionizing radiation is not visible and cannot be perceived with the senses which humans have such as, e.g., the sense of smell or the sense of hearing. Exposure to ionizing radiation can damage  
202. Traceability of photometric absorbance values for the accurate determination of the total haemoglobin concentration in blood  
Date: 28.11.2013
Percental score: 6 %
One of the analytes that is most frequently measured in laboratory medicine is the total haemoglobin concentration (Hb) in blood. It is based on transforming (by means of appropriate conversion  
203. PIM measurements on a multiband antenna in the project “5G-Reallabor”  
Date: 08.12.2020
Percental score: 6 %
Dynamic PIM measurement being carried out on a multiband antenna Passive intermodulation (PIM) leads to interference signals in cellular networks and can therefore degrade network quality. In the project “5G-Reallabor”, PTB is working on traceability for PIM  
204. Broadband traveling-wave parametric amplifier with more than 20 dB gain in the GHz frequency range  
Date: 27.11.2017
Percental score: 6 %
Test chip with superconducting SQUID series arrays Quantum information technology requires broadband amplifiers with extremely low intrinsic noise. A traveling-wave parametric amplifier based on a series array of one-junction SQUIDs was developed at  
205. Confirmation of the results obtained in the mass determination of the 28Si spheres AVO28-S5c and AVO28-S8c in 2013 and 2014  
Date: 24.10.2018
Percental score: 6 %
Within the scope of comparison measurements with regard to the results of the determination of the Avogadro constant and the Planck constant with the aid of the first two monocrystalline silicon  
206. Uncertainty budget for the dose range between 2 Gy and 25 Gy established  
Date: 15.01.2007
Percental score: 6 %
The uncertainty budget for the secondary standard measurement system for the dose to water based on alanine/ESR was established. The relative standard measurement uncertainty is 0.15% for 25 Gy,  
207. Getting to PTB in Berlin Adlershof  
Date: 10.04.2017
Percental score: 7 %
Getting to PTB in Berlin Adlershof Getting to PTB in Berlin-Adlershof In Adlershof, PTB can be reached from Adlershof Station (S-Bahnhof Adlershof) (about a 15-minute walk). The Willy  
208. Tilted-Wave Interferometer (TWI) as Example for Hand-in-Hand Calibration of Real and Virtual Experiments  
Date: 06.11.2020
Percental score: 7 %
The optical industry uses aspheres and free-form surfaces in modern optical systems, which, however, place very high demands on metrology. Optical measurement techniques have a prominent role to play  
209. New high-pressure natural gas test-rig needs a new primary standard  
Date: 26.08.2020
Percental score: 7 %
PTB has developed a new primary standard for the calibration of gas meters using high-pressure natural gas. In future, the so-called high-pressure comparator will form the top of the traceability  
210. Pulse-driven SNS arrays for a quantum-based synthesizer for arbitrary waveforms  
Date: 01.01.2007
Percental score: 7 %
A quantum-based synthesizer for generation of AC voltages of arbitrary waveforms (Josephson Arbitrary Waveform Synthesizer, JAWS) is based on SNS Josephson junctions due to their high critical  
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