Control of electroporation efficiency by measuring the conductivity of the tissues

The method for measuring the efficiency of the electroporation process for living tissue is offered. The method consists in measuring the conductivity of tissue before and after the electroporation process. The measurements confirmed the efficiency of the method

Разработка внутритрубного УЗ толщинометра стенки трубопровода с использованием вращающегося зеркала.

Выпускная квалификационная работа посвящена разработке системы контроля толщины стенки трубопроводов, основанной на методе ультразвуковой толщинометрии с использованием вращающегося зеркала и рассмотрение альтернативных решений ультразвукового сканирования стенки трубопровода.The final qualification work is devoted to the development of a pipeline wall thickness control system based on the method of ultrasonic thickness measurement using a rotating mirror and consideration of alternative solutions for ultrasonic scanning of the pipeline wall

Organization and partial sequence of a DNA region of the Rhizobium leguminosarum symbiotic plasmid pRL6JI containing the genes fixABC, nifA, nifB and a novel open reading frame

Grönger P, Manian SS, Reiländer H, O´Connell M, Priefer UB, Pühler A. Organization and partial sequence of a DNA region of the Rhizobium leguminosarum symbiotic plasmid pRL6JI containing the genes fixABC, nifA, nifB and a novel open reading frame. Nucleic Acids Research. 1987;15(1):31-49.By hybridization and heteroduplex studies the fixABC and nifA genes of the Rhizobium leguminosarum symbiotic plasmid pRL6JI have been identified. DNA sequencing of the region containing nifA showed an open reading frame of 1557 bp encoding a protein of 56,178 D. Based on sequence homology, this ORF was confirmed to correspond to the nifA gene. Comparison of three nifA proteins (Klebsiella pneumoniae, Rhizobium meliloti, Rhizobium leguminosarum) revealed only a weak relationship in their N-terminal regions, whereas the C-terminal parts exhibited strong homology. Sequence analysis also showed that the R. leguminosarum nifA gene is followed by nifB and preceded by fixC with an open reading frame inserted in between. This novel ORF of 294 bp was found to be highly conserved also in R. meliloti. No known promoter and termination signals could be defined on the sequenced R. leguminosarum fragment