Methylphloroglucinol as an available semiproduct for azo dye synthesis

A technologically convenient method is suggested for the high-yield synthesis of 2,4,6-trihydroxytoluene (methylphloroglucinol) from 2,4,6-trinitrotoluene. A number of structurally different azo dyes have been synthesized. The dyes are applicable to various textiles, ensuring high colorfastness to laundering and rubbing.     

Energy resolution of gamma-ray spectroscopy of JET plasmas with a LaBr3 scintillator detector and digital data acquisition

A new high efficiency, high resolution, fast γ-ray spectrometer was recently installed at the JET tokamak. The spectrometer is based on a LaBr3(Ce) scintillator coupled to a photomultiplier tube. A digital data acquisition system is used to allow spectrometry with event rates in excess of 1 MHz expected in future JET DT plasmas. However, at the lower rates typical of present day experiments, digitization can degrade the energy resolution of the system, depending on the algorithms used for extracting pulse height information from the digitized pulses. In this paper, the digital and analog spectrometry methods were compared for different experimental conditions. An algorithm based on pulse shape fitting was developed, providing energy resolution equivalent to the traditional analog spectrometry method.     

A neuronal network model for the detection of single bands and cruciform figures

The model of artificial neuronal network has been proposed, which detects not only single bar orientation but also has selective sensitivity to cross-like figures. Properties of such "detector of cross" have been studied at the model constructed on the basis of convergence of excitatory connections with different weights from neurons with different orientation tuning. It has been shown that the amplification mechanism (reverberator) is necessary for the detector of cross with monomodal orientation tuning.     

Preparation of 2,4,6-triaminotoluene and its salts with inorganic acids from 2,4,6-trinitrotoluene

The basics of the technological process of 2,4,6-trinitrotoluene hydrogenation on palladium catalyst at atmospheric pressure are described. A technology is developed for isolating 2,4,6-triaminotoluene from the reaction solution in the form of salts with inorganic acids stable in storage