Флора г. Дубна: предварительный список дикорастущих сосудистых растений

The information about the flora of Dubna (Moscow region) is given for the first time. The list of the wild vascular plants counts 587 species. Among them special attention deserves Nemophila menziesii, registered as the running wild plant for Moscow region the first time.Впервые приведены сведения о флоре г. Дубна (Московская область). Список дикорастущих сосудистых растений насчитывает 587 видов. Среди них особое внимание заслуживает Nemophila menziesii, которая впервые зарегистрирована для Московской области как дичающее растение

Simulating a scintillation fiber detector of the activities of ionizing radiation sources

Computer simulation results are presented for a fiber sensor based on the Saint-Gobain Crystals BSF-60 scintillation fiber aimed to measure the activities of sources of ionizing radiation. The simulation based on the Monte Carlo method and a Geant4 software code was applied to calculate the dependence of the number of beta-electrons entering a BSF-60 scintillation fiber on the activity of radiation sources based on 89Sr and 90Sr isotopes. An experimental study of the sensitivity of the developed fiber sensor and the measuring system to beta radiation of 89Sr and 90Sr isotopes showed a high degree of compliance with the proposed model. Keywords: Modeling, Computer simulation, Scintillation fiber, Dosimeter, Geant