6 research outputs found

    Организация электроснабжения электрохимической защиты магистральных трубопроводов

    Get PDF
    В процессе эксплуатации магистральные газопроводы (МГ), как и большинство других металлических подземных коммуникаций, подвергаются воздействию процессов коррозии. Интенсивность этих процессов, а, следовательно, и состояние МГ зависит от целого ряда факторов, к числу которых следует отнести: коррозионную активность и характеристики грунтов в местах прокладки газопровода, глубину залегания участков газопровода, пересечениями с ЛЭП высокого напряжения или с электрифицированной железной дорогой – источниками блуждающих токов, качеством изоляционного покрытия, наличием и эффективностью настройки средств электрохимической защитыIn the process of exploitation of magistral gas pipelines (MG), like most other metal pose of communication, are exposed to corrosion processes. The intensity of these processes, and, consequently, the condition of the person MG depends on a number of factors, among which include: corrosiveness and the characteristics of the grunts in the field strip, the gazebo, the depth of the selenium sites gazebo leading from Lap high voltage electrician or from the sale of honey for the presence of wandering well, the quality of the insulation coating, lithium and effective tuning of electrochemical protectio

    Sequence-specific peptide synthesis by an artificial small-molecule machine.

    No full text
    The ribosome builds proteins by joining together amino acids in an order determined by messenger RNA. Here, we report on the design, synthesis, and operation of an artificial small-molecule machine that travels along a molecular strand, picking up amino acids that block its path, to synthesize a peptide in a sequence-specific manner. The chemical structure is based on a rotaxane, a molecular ring threaded onto a molecular axle. The ring carries a thiolate group that iteratively removes amino acids in order from the strand and transfers them to a peptide-elongation site through native chemical ligation. The synthesis is demonstrated with ~1018 molecular machines acting in parallel; this process generates milligram quantities of a peptide with a single sequence confirmed by tandem mass spectrometry

    EU Federalism and the Governance of Financial Reporting: Cost and Benefits of Centralized Standard Setting

    No full text

    The Political Economy of Direct Democracy: A Survey

    No full text
    corecore