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Experiments on measuring the separation efficiency of evaporation residues produced in complete fusion reactions with heavy ions have been performed on the MASHA mass separator. A new design has been developed for a hot catcher based on the use of thin paper from graphite nanotubes and graphene. The catcher is to be used for the synthesis of nuclei at a high intensity of the primary beam to increase the efficiency of separation. A 16-strip silicon detector was used for continuous monitoring during an experiment to measure the mass spectrometer’s efficiency of separation in the intermediate focal plane.

Detection of bovine leukemia virus in dried blood spots by the polymerase chain reaction (PCR) was performed using a new format of membrane system for sample collection. The analysis results of liquid and dried samples of bovine whole blood were entirely consistent with each other and with the data of a veterinary laboratory. It was found that any part of a membrane strip with size of 0.5 × 0.5 cm containing an applied sample can be used for detection of a viral DNA copy. Provirus DNA in dried blood spots was stable for 8 days at 37°C and for 24 hours at 60°C. The new system for the sampling of whole blood in the form of dried spots can be used for sampling in field conditions for subsequent laboratory analysis.