Abstract Radon is a naturally occurring, odorless, colorless, radioactive, tasteless, and noble gas. concentrations have been measured by the usage of alpha spectroscopy (RAD-7). The RAD-7 measuring process based on detecting particles produced from disintegration radon its products using solid-state detector (usually silicon), then converting radiation directly to an electrical signal. radioac...

The integration of the radioactivity spectrometer KATERINA II in a fixed station (buoy) POSEIDON network at North Aegean Sea within framework MARRE Project is presented. acquisition period lasted from 20 November 2019 till 22 February 2020. An intense increment activity concentration radon progenies (up to an order magnitude) was recorded during rainfall. More specifically, 214Bi varied 0.09 0....

AIM To compare an ultrasonic height measuring device (Gulliver) with mechanical stadiometry and the classical "book and tape measure" method. METHODS Blinded duplicate measurements of height were made on each of 14 children by a pair of observers using a stadiometer (H) and Gulliver (G). Height was measured on a further 18 children by parents and an auxologist using Gulliver and the book and ...

Biomolex has technology for real-time imaging of radioactive emissions. Images are acquired for measuring radioactivity in tissue slices for assessing transport and uptake of labeled biomolecules or in spots in protein kinase arrays for evaluating protein phosphorylations. The sensor used is a silicon strip detector, and a problem is that some strips produce no signal. Also, some other strips m...

Two measurement systems, one being comprised of three HPGe detectors and the other being a 4π measurement system of the assembly of 10 sets of scintillation detectors, were compared for their measurement performance in operations of radioactive waste drum radioactivity measurement and clearance and release operation of decommissioning. The system features of the former were high costs, capable ...

3. An effective method to separate the free hormone from the hormone bound to the protein. The total amount of the labelled hormone preparation and the binding protein, followed by separation of the bound from unbound hormone. By measuring the radioactivity in each fraction, one obtains a bound: unbound ratio which is referred to a standard curve to obtain the concentration of the hormone in th...

This paper shows how to run some experiments of physics, using a virtual laboratory. Such a laboratory is a website, equipped with objects to be measured and measuring instruments, simulated by means of Java Applets. Here we discuss in particular the case of a laboratory in which we can perform, on the Web, some experiments on radioactivity. The proposed virtual environment can be a viable alte...

The urinary excretion of injected cyanocobalamin was studied in 30 previously untreated vitamin B(12)-deficient patients by measuring the urinary radioactivity after repeated injections of (58)Co vitamin B(12). The dose range used was 54 to 30,000 mug., each patient receiving the same dose at each injection. The results show that there is no constant trend to the excretion of greater or smaller...