A novel method is proposed to measure the charging potential of dielectric targets under medium energy electron irradiation in a scanning electron microscope. The method is based on the measurement of backscattered electron signals by standard semiconductor or scintillation detectors. The signal is pre-calibrated by grey scale levels on the SEM screen.
View Article and Find Full Text PDFPostepy Dermatol Alergol
February 2022
Introduction: Quantitative and qualitative changes in the microbiome of the skin affect the emergence and course of allergic diseases, in particular, of acute urticaria.
Aim: To investigate the taxonomic composition of the skin microbiota in children with acute urticaria and to study its effect on the course of the disease.
Material And Methods: In total, 75 children with diagnosed acute urticaria at the age of 7--14 years were examined.
This article is devoted to the study of trace metals in the bottom sediments of watercourses in the area of the developed Lomonosov diamond deposit, which is the largest industrial diamond deposit in Europe. Samples of river sediments were taken from the Zolotitsa River and all its tributaries in the area of the diamond deposit. In addition, samples of kimberlites and rocks were selected from the quarries.
View Article and Find Full Text PDFThe article is devoted to the study of the activity of the natural radionuclides K, Th, Ra and technogenic Cs radionuclide in the river sediments of watercourses around the Lomonosov diamond deposit (northwestern Russia). This is the only large diamond mining and beneficiation complex in Europe. Samples of river sediments and surface waters were taken from the Zolotitsa River and its tributaries in the area of the diamond deposit.
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