Development of personnel technologies in the customs system of the Russian Federation

In the paper, the authors study the main reasons for introducing economic sanctions against the Russian Federation and how to counteract them. At the same time, the current situation requires intensified development of the international business to modernize the Russian economy. For this, it has become imperative to understand the role and place of the customs of the Russian Federation in this process and to further improve the approaches to staffing a federal executive body – the Federal Customs Service (FCS of Russia) in terms of selecting highly skilled personnel. In the end, a unified methodology for evaluating candidates taking civil service postsin the customs bodies is propose

Research of component composition and catalitic reactivity of metallurgical industry slag

The article deals with the research of component composition and catalitic reactivity of metallurgical waste products. The slags component composition was investigated by X-ray fluorescence analysis. The slag stuff has been modified with alkali (NaOH) and mineral acids (HNO3, H2SO4, HCI and H3PO4), and their catalytic reactivity in the catalytic decomposition of ethyl alcohol and hydrogen peroxide has been determined for the first time. The revealed catalytic reactivity of the slag staff for the decomposition of ethyl alcohol and hydrogen peroxide indicates the need for a more detailed research and development of an industrial non-ferrous waste treatment technology

Research of component composition and catalitic reactivity of metallurgical industry slag

The article deals with the research of component composition and catalitic reactivity of metallurgical waste products. The slags component composition was investigated by X-ray fluorescence analysis. The slag stuff has been modified with alkali (NaOH) and mineral acids (HNO3, H2SO4, HCI and H3PO4), and their catalytic reactivity in the catalytic decomposition of ethyl alcohol and hydrogen peroxide has been determined for the first time. The revealed catalytic reactivity of the slag staff for the decomposition of ethyl alcohol and hydrogen peroxide indicates the need for a more detailed research and development of an industrial non-ferrous waste treatment technology

Research on zinc concentrate dressing at the zhezkent processing plant to obtain conditioned concentrate

The article investigates dressing of zinc concentrate of Zhezkent processing plant with the purpose of receiving conditioned zinc concentrate and copper product output. The scheme of the zinc concentrate ressing is suggested which includes the following operations: desorption of the initial concentrate by sodium sulfide and activated carbon; preliminary hydraulic classification (washing of thin sludge) complicating the flotation process; comminution of the concentrate in a ball mill up to the size of 96 %, class - 0,044 mm; flotation of copper minerals by reagents: xanthate, Methyl isobutyl ketone blowing agent, and depressors (Na2S, FeSO4, ZnSO4). The proposed dressing scheme provides obtaining conditioned zinc concentrate of grade KC-3 with Zn 47,0 %, and Cu 1,9 %

Comamonas testosteroni strain TI as a potential base for a microbial sensor detecting surfactants

Strain Comamonas testosteroni TI, capable of degrading the nonionic surfactant (NIS) nonylphenolethoxylate (OP-10), was used for constructing a pilot cellular biosensor. The lower NIS detection limit for the biosensor was 0.25 mg/l. We studied the substrate specificity of the biosensor with respect to a wide range of organic compounds: surfactants, polyaromatic compounds (PAC), carbohydrates, alcohols, etc. It was shown that the biosensor based on Comamonas testosteroni TI did not respond to glucose, which was an advantage over the formerly described biosensor based on Pseudomonas rathonis T. The amplitude of the sensor response remained stable for 10 days

Fetal growth, birth size and energetic cost of gestation in southern right whales

The cost of reproduction greatly affects a species’ life history strategy. Baleen whales exhibit some of the fastest offspring growth rates in the animal kingdom. We quantified the energetic cost of gestation for southern right whales (Eubalaena australis) by combining whaling catch records of pregnant females with photogrammetry data on southern right whale mothers and calves from two breeding grounds in Argentina and Australia. The relationship between calf birth size and maternal length was determined from repeated measurements of individual females before and after giving birth. Fetal growth was determined from generalized linear models fitted to fetal length data from whaling operations between 1961 and 1967. Fetal length was converted to volume and mass, using the volume-to-length relationship of newborn southern right whales calves, and published tissue composition and energy content estimates. Fetal maintenance costs (heat of gestation) and the energy content of the placenta were predicted from published relationships and added to the fetal growth cost to calculate the total cost of gestation. Our findings showed that fetal growth rates and birth size increased linearly with maternal length, with calves being born at ∼35% maternal length. Fetal length increased curvilinearly through gestation, which resulted in an exponential increase in fetal volume and mass. Consequently, the cost of gestation was very low during the first (0.1% of total cost) and second trimester (4.9%), but increased rapidly during the last trimester (95.0%). The heat of gestation incurred the highest cost for pregnant females (73.8%), followed by fetal growth (21.2%) and the placental energy content (5.0%)

Improving the assay-gravimetric method for determining the content of noble metals

The study considers the current state and problems of analytical control as the most important component of all stages of technology and production of noble metals. Based on the analysis carried out, a universal method for measuring the mass fraction of gold and silver in ores, products of their enrichment and metallurgical processing by the assay-gravimetric method was improved, and the optimal parameters for determining gold and silver were determined

Percolation in Models of Thin Film Depositions

We have studied the percolation behaviour of deposits for different (2+1)-dimensional models of surface layer formation. The mixed model of deposition was used, where particles were deposited selectively according to the random (RD) and ballistic (BD) deposition rules. In the mixed one-component models with deposition of only conducting particles, the mean height of the percolation layer (measured in monolayers) grows continuously from 0.89832 for the pure RD model to 2.605 for the pure RD model, but the percolation transition belong to the same universality class, as in the 2- dimensional random percolation problem. In two- component models with deposition of conducting and isolating particles, the percolation layer height approaches infinity as concentration of the isolating particles becomes higher than some critical value. The crossover from 2d to 3d percolation was observed with increase of the percolation layer height.Comment: 4 pages, 5 figure

Цифрова трансформація міжнародної торгівлі в контексті глобальної конкуренції: технологічні інновації та інвестиційні пріоритети

In today's world, globalization and digital technologies are significantly transforming the landscape of international trade. Digital transformation has become a critical aspect that determines the competitiveness of countries and businesses in the international arena. The study aims to identify the impact of the digitalization of international trade on the economic development of countries and their competitiveness based on technological innovations that determine the future of global competition at the country and company levels, affect trade processes, and identify and justify investment priorities to support digital transformation in Ukraine. The study analyzes the impact of the digitalization of international trade on the economic development of countries, which is caused by the digital divide between developed and least developed countries (LDCs). Developed countries are characterized by Internet coverage and access of more than 90%, as opposed to LDCs, where the corresponding figure is less than 20%. Given the current conditions of access to the Internet, the countries of the latter group are not able to be fully involved in e-commerce and cross-border trade in digital products. An additional barrier to developing digital commerce in certain regions of the world is the need for more legislation on various e-commerce trade issues. The impact of the war in Ukraine on the e-commerce market is determined: the e-commerce market declined 12 times in 2022 compared to the pre-war period and began to recover gradually in 2023. The market is expected to recover almost fully in Ukraine by the end of 2023 or early 2024. The main challenge for Ukraine will be to expand the scope of the existing free trade agreements to cover services, e-commerce, and investment. Ukraine should become a significant player in several global markets for services and digital products, given the availability of an updated regulatory framework on these issues. E-commerce is expected to grow rapidly after the end of the war in Ukraine.У сучасному світі глобалізація та цифрові технології суттєво перетворюють ландшафт міжнародної торгівлі. Цифрова трансформація стала ключовим аспектом, що визначає конкурентоспроможність країн і підприємств на міжнародній арені. Метою дослідження є виявлення впливу цифровізації міжнародної торгівлі на економічний розвиток країн та їхню конкурентоспроможність, що базуються на технологічних інноваціях, які визначають майбутнє глобальної конкуренції на рівні країн і компаній та впливають на процеси торгівлі й визначення та обґрунтування інвестиційних пріоритетів для підтримки цифрової трансформації в Україні. У дослідженні проаналізовано вплив цифровізації міжнародної торгівлі на економічний розвиток країн, що зумовлений цифровим розривом між високорозвинутими та найменш розвинутими країнами (НРК). Для розвинутих країн характерне покриття й доступ до Інтернету більше ніж на 90% на противагу НРК, де відповідний показник менший за 20%. У відповідних умовах, що склалися з доступом до мережі «Інтернет», країни НРК не мають можливості бути повноцінно залученими до електронної комерції та транскордонної торгівлі цифровими продуктами. Додатковим бар’єром для розвитку цифрової торгівлі в окремих регіонах світу є відсутність законодавства з різних торговельних питань електронної комерції. Визначено вплив війни в Україні на ринок електронної комерції. Зазначено, що ринок електронної комерції скоротився у 12 разів у 2022 році порівняно з довоєнним періодом та почав поступово відновлюватися у 2023 році. Очікується, що ринок досягне майже повного відновлення в Україні до кінця 2023 року чи початку 2024 року. Головним завданням для України буде розширення сфери охоплення чинних угод про вільну торгівлю на сфери послуг, електронної комерції та інвестицій. Україна має стати вагомим гравцем на деяких світових ринках послуг і торгівлі цифровими продуктами, ураховуючи наявність оновленої нормативно-правової бази з цих питань. Передбачається, що електронна комерція буде швидко зростати після завершення війни в Україні