During the development of a new method of analyzing crystals by X-rays we discovered that the X-rays characteristic of and excited in the chemical elements in a crystal are reflected by the crystal itself. The reflection takes place both in accordance with the Bragg law: nX = 24 sin 0 and. also in an anomalous fashion. The ionization spectrometer utilized in these investigations and the various...

Zirconia powder was synthesized via a sol gel method and placed in a batch reactor for cesium removal investigation. X-ray analysis and Fourier transform infrared spectroscopy were utilized for the evaluation of the developed adsorbent. The adsorption process has been investigated as a function of pH, contact time and temperature. The adsorption is strongly dependent on the pH of the medium whe...

From fiscal year 2012 to 2014, we surveyed the concentration of radioactive cesium in 39 wild animal meats obtained from 20 wild boars and 19 deer caught in Chiba prefecture, using a germanium semiconductor detector. Four wild boar meats in the fiscal years 2012 and 2013 exceeded the radioactive cesium limit in general foods (100 Bq/kg), whereas none of the deer meats exceeded the limit. The le...

The accuracy of the National Research Council 2.1 m cesium beam frequency standard has been re-evaluated using the two NRC hydrogen masers as stable comparison standards. At the time of re-evaluation, the various uncertainties gave rise to an error limit of :!:3.8 x 10-12, with a most probable value of :!:1.5 x 10-12 if they were assumed to be random. Mter application of all corrections, the ag...

This paper focuses on an overview of radioactive cesium 137 (quasi-Cs137 included Cs134) contamination of freshwater fish in Fukushima and eastern Japan based on the data published by the Fisheries Agency of the Japanese Government in 2011. In the area north and west of the Fukushima Nuclear plant, freshwater fish have been highly contaminated. For example, the mean of active cesium (quasi-Cs13...

OBJECTIVE The purpose of this study was to investigate whether angiotensin II provokes ventricular tachyarrhythmias and to clarify its mechanism using the cesium-induced arrhythmia model, which has been widely used as an afterdepolarization and triggered activity model. METHODS Eighteen adult mongrel dogs of either sex weighing 9.6-23.0 kg were studied. The dogs were randomly divided into thr...