SPHINCS+^+ post-quantum digital signature scheme with Streebog hash function

Many commonly used public key cryptosystems will become insecure once a scalable quantum computer is built. New cryptographic schemes that can guarantee protection against attacks with quantum computers, so-called post-quantum algorithms, have emerged in recent decades. One of the most promising candidates for a post-quantum signature scheme is SPHINCS$^+$, which is based on cryptographic hash functions. In this contribution, we analyze the use of the new Russian standardized hash function, known as Streebog, for the implementation of the SPHINCS$^+$ signature scheme. We provide a performance comparison with SHA-256-based instantiation and give benchmarks for various sets of parameters.Comment: 5 pages, 2 figures, 3 table

Design of water-drip cooling facilities for heat treatment of mill rollers

Water-drip cooling devices based on centrifugal jet atomizers are studied experimentally. Their main operating characteristics such as the irrigation density, the uniformity of the distribution of irrigation over the cooled surface, the dependence of the heat transfer factor on the surface temperature, etc. are determined. The effect of the design and production parameters of the quenching facilities on their operating characteristics and mode of cooling of large steel articles is considered for mill rollers as an example. The results of the tests are used to design cooling facilities and heat treatment processes for mill rollers with the use of water-drip quenching. © 2013 Springer Science+Business Media New York

Development of Reasonable Regimes of Local Heat Treatment of Drill Pipe Welded Zone

Создана экспериментальная установка для закалки и отпуска зоны сварного соединения бурильных труб с применением индукционного нагрева и охлаждения водополимерной закалочной жидкостью. Разработан режим локальной термической обработки, позволяющий получить для труб различного сортамента повышенный уровень свойств по требованиям стандарта API Spec 5DP:2020, PSL-3.Experimental device for quenching and tempering of drill pipe welded zone by means of induction heating and cooling of the water-polymer quenching liquid has been constructed. The regime of local heat treatment allowing obtainng improved mechanical properties of different range of drill pipes corresponding API Spec 5DP:2020, PSL‑3 has been developed

THE CHEMICAL COMPOSITION AND HEAT THEATMENT REGIMES INFLUENCE ON THE STEEL MECHANICAL PROPERTIES FOR HIGH-STRENGHT DRILL PIPE

The laboratory investigations have been done; result in the rational chemical composition and heat treatment regime for drill pine Z140, V150, U165 grades have been developed, meeting requirements of the leading world manufacturers.Проведены лабораторные исследования, в результате которых разработаны рациональные химический состав и режим термической обработки для бурильных труб групп прочности Z140, V150, U165, соответствующих требованиям ведущих мировых производителей

DEVELOPMENT OF STEEL CHEMICAL COMPOSITION AND HEAT TREATMENT REGIMES FOR PRODUCTION OF CASING 125 KSI GRADE IN COLD-RESISTANT PERFORMANCE

В условиях АО «ВТЗ» проведено опытно-промышленное опробование, в ходе которого был разработан химический состав экономнолегированной стали марки 25ХМФБ и режим термической обработки для производства обсадных труб группы прочности Q125 с повышенным уровнем хладостойкости.At Volzsky Pipe Plant the experimental-industrial testing have been carried out as a result of the chemical composition of economically alloyed 25CrMoVNb steel and heat treatment regime for production of casing 125 ksi grade in cold-resistant performance

ENVIRONMENTAL AND ECONOMIC EFFICIENCY OF FUEL AND START GAS HEATERS

The paper presents the possibility of resource-saving for the fuel and starting gas heater, use of the gas transmission system at the facility. Reserves have been identified that allow the installation of heat-generating installations of lower capacity in order to save the enterprise’s money at the stage of purchasing equipment. Energy-efficient measures for a gas preheater are proposed, allowing to reduce the consumption of natural gas and reduce emissions of pollutant emissions into the atmosphere.В работе показана возможность ресурсосбережения на подогревателях топливного и пускового газа (ПТПГ), установленных на объектах газотранспортной системы. Выявлены резервы, позволяющие устанавливать теплогенерирующие установки меньшей мощности в целях экономии денежных средств предприятия на этапе закупки оборудования. Предложены энергоэффективные мероприятия для ПТПГ, позволяющие сократить потребление природного газа и уменьшить выбросы загрязняющих веществ в атмосферу