The effects of UVC exposure on the track etch rate Vt and the detector sensitivity V of CR-39 SSNTDs were investigated through the diameters and depths of alpha-particle tracks. Both the bulk etch rate Vb and Vt increased but V decreased. The track diameters and depths were used to derive a V function for CR-39 detectors with and without UV irradiation. © 2008 Elsevier Ltd. All rights reserved.

a Department of Mathematics, University of Bristol, University Walk, Bristol BS8 1TW, UK b School of Mathematical Sciences, Queen Mary, University of London, Mile End Road, London E1 4NS, UK c Department of Mathematics, University of Southern California, Los Angeles, CA 90089-2532, USA d DPMMS, Centre for Mathematical Sciences, University of Cambridge, Cambridge CB3 0BW, UK e Alfréd Rényi Insti...

PURPOSE Our purpose was to evaluate cerebral glioma grade by using normal side creatine (Cr) as an internal reference in multi-voxel 1H-MR spectroscopy. MATERIALS AND METHODS We examined 25 adult patients with glial brain tumors. Ratios of maximum Cho/Cr (normal) (max- Cho/Cr(n)) and minimum NAA/Cr(normal) (min-NAA/ Cr(n)) were determined using Cr levels in the normal parenchyma. In addition, m...

OBJECTIVE To evaluate the effect of calorie restriction-induced weight loss with or without aerobic exercise on liver fat. METHODS Thirty-three adults with visceral adiposity were divided into calorie restriction (CR; n = 18) or CR and aerobic exercise (CR + Ex; n = 15) groups. Target energy intake was 25 kcal/kg of ideal body weight. The CR + Ex group had a targeted exercise time of 300 min/...

The simple and effective technique of fission track etch has been applied to determine trace concentration of uranium in human blood samples taken from two groups of male and female participants: leukemia patients and healthy subjects group. The blood samples of leukemia patients and healthy subjects were collected from three key southern governorates namely, Basrah, Muthanna and Dhi-Qar. These...

As a nuclear track detector, CR-39 (polyallyl diglycol carbonate) is used to reveal the products of fusion reactions. Positioned around the OMEGA target chamber, pieces of CR-39 absorb and are damaged by ejected particles. The plastic is then etched in NaOH solution at 80°C for 6 hours, resulting in the formation of nuclear tracks visible under a digital microscope. The etching process also rev...

1 Department of Mathematics, Darmstadt University of Technology Schlossgartenstrasse 7, D-64289 Darmstadt, Germany [email protected] 2 Institute of Mathematics ”Simion Stoilow” of the Romanian Academy P.O. Box 1-462, Bucharest, Romania Currently: Department of Mathematics, Darmstadt University of Technology Schlossgartenstrasse 7, D-64289 Darmstadt, Germany leustean@mathemat...

In this note, we establish a mass formula for self-orthogonal codes over Zp2, where p is a prime. As a consequence, an alternative proof of the known mass formulas for self-dual codes over Zp2 is obtained. We also establish a mass formula for even quaternary codes, which includes a mass formula for Type II quaternary codes as a special case. On study leave from the Institute of Mathematics, Uni...