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Association of VEGF gene rs699947 and rs2010963 polymorphisms with vascular endothelial growth factor levels in the blood serum of children with lupus nephritis 狼疮性肾炎患儿血清VEGF基因rs699947和rs2010963多态性与血管内皮生长因子水平的关系
IF 0.1 Pub Date : 2023-01-03 DOI: 10.29235/1561-8323-2022-66-6-614-621
N. Nikitchenko, I. Kazyra, H. Bialkevich, A. Sukalo, R. Goncharova
The growth factor genes VEGF and TGFB1 are involved in the normal functioning of the kidneys, and some polymorphic loci of these genes determine a genetic predisposition to the autoimmune diseases, including systemic lupus erythematosus (SLE) and its dangerous complication, lupus nephritis (LN). The products of these genes, in particular, the vascular endothelial growth factor protein and the transforming growth factor β1 protein are used in clinical practice as markers of endothelial dysfunction for early diagnosis of kidney pathology. However, the relationship between the expression of these proteins and the genotypes/alleles of the polymorphic loci of these genes has not been studied enough, which requires clarification of this issue for the child population of Belarus. In this work, we analyzed the associations of the TGFB1 (rs1800469) and VEGF (rs699947 and rs2010963) gene genotypes with the concentration of their products in the blood serum of patients with LN during exacerbation and remission of the disease. The study did not find a significant relationship between polymorphic variants of the TGFB1 gene (rs1800469) and levels of its product in the blood. An association has been established between the rs699947 and rs2010963 polymorphic variants of the VEGF gene and the serum concentration of the gene product in pediatric patients with LN during exacerbation. It was found that the homozygous minor genotype AA of the polymorphic locus rs699947 and the group of genotypes GC + CC containing at least one minor allele of the locus rs2010963 are associated with higher levels of the gene product in the blood serum of children with LN during disease exacerbation (p < 0.001 and p = 0.036, respectively). Thus, VEGF polymorphic variants associated with an increased concentration of the gene product in the blood serum during disease exacerbation can be considered as markers of the risk of disease exacerbation in patients with LN.
生长因子基因VEGF和TGFB1参与肾脏的正常功能,这些基因的一些多态性位点决定了自身免疫性疾病的遗传易感性,包括系统性红斑狼疮(SLE)及其危险并发症狼疮肾炎(LN)。这些基因的产物,特别是血管内皮生长因子蛋白和转化生长因子β1蛋白,在临床实践中被用作内皮功能障碍的标志物,用于肾脏病理的早期诊断。然而,这些蛋白质的表达与这些基因多态性位点的基因型/等位基因之间的关系还没有得到足够的研究,这需要对白俄罗斯儿童群体的这一问题进行澄清。在这项工作中,我们分析了LN患者在疾病恶化和缓解期间血清中TGFB1(rs1800469)和VEGF(rs699947和rs2010963)基因型与其产物浓度的关系。该研究没有发现TGFB1基因(rs1800469)的多态性变体与其血液中产物水平之间的显著关系。VEGF基因的rs699947和rs2010963多态性变体与LN患儿急性加重期的血清基因产物浓度之间存在相关性。研究发现,多态性位点rs699947的纯合次要基因型AA和含有位点rs2010963的至少一个次要等位基因的基因型GC+CC组与疾病恶化期间LN儿童血清中较高水平的基因产物相关(分别为p<0.001和p=0.036)。因此,在疾病恶化期间,与血清中基因产物浓度增加相关的VEGF多态性变体可以被认为是LN患者疾病恶化风险的标志物。
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引用次数: 0
RATIONALE FOR CHOOSING A TARGET SIMULATOR FOR STUDYING THE ACTION OF AN IMPACTING ELEMENT OF A KINETIC NON-LETHAL WEAPON 为研究非致命动力武器冲击元件的作用选择目标模拟器的基本原理
IF 0.1 Pub Date : 2023-01-01 DOI: 10.33405/2409-7470/2023/1/41/280868
O. Bilenko, V. Marchenko
Due to the complexity of modeling and the need to apply a number of assumptions, the study of the influence of the energy characteristics of the striking element on the results of the action on the target is usually carried out by empirical methods. Various types of objects, both biological and non-biological, have been and continue to be used in experiments for many years to simulate the processes accompanying the formation of gunshot wounds A method of establishing a connection between the characteristics of the striking element and the results of its action on the target is proposed. The method consists in researching the effect of an impacting element with the same energy and other characteristics on a biological target and a target imitator, followed by establishing the correspondence of the damage of the target imitator to the damage of the biological target. This approach makes it possible to conduct statistically large empirical studies in artificial conditions with variation of input parameters on target simulators and to spread the obtained results to biological objects with appropriate experimental verification, but through a relatively small number of repetitions. A key requirement for target simulators is a uniform response to the impact of a striking element with the same set of energy and other characteristics. Known imitators of the target have different characteristics both in absolute values and in terms of stability, so the question arises of choosing a rational type of imitator of the target for certain studies. An analysis of the properties of non-biological target imitators, including gelatin, soap, plasticine blocks, Pankratov's target, and ballistic gel blocks, was carried out. The choice of blocks made of ballistic plasticine as a target imitator for studying the effect of striking elements of non-lethal kinetic weapons is substantiated. The results of preliminary experimental studies of the influence of the temperature of ballistic plasticine «Beschussmasse» on the volume of the final cavity due to the action of the impacting element are presented. The research results indicate the significance of such an impact and the need to establish the dependence of the volume of the final cavity on the temperature of the block material and the kinetic energy of the impacting element.
由于建模的复杂性和需要应用许多假设,研究打击元素的能量特性对作用于目标结果的影响通常采用经验方法进行。多年来,各种类型的物体,包括生物和非生物,已经并将继续在实验中用于模拟伴随枪伤形成的过程。本文提出了在打击元素的特性与其作用于目标的结果之间建立联系的方法。该方法首先研究具有相同能量和其他特性的冲击元件对生物目标和目标模仿者的影响,然后建立目标模仿者的损伤与生物目标损伤的对应关系。这种方法可以在目标模拟器的输入参数变化的人工条件下进行统计上较大的经验研究,并通过适当的实验验证将获得的结果传播到生物对象,但通过相对较少的重复次数。目标模拟器的一个关键要求是对具有相同能量和其他特性的打击元素的冲击具有统一的响应。已知的目标模仿者在绝对值和稳定性方面都具有不同的特征,因此,为某些研究选择目标模仿者的合理类型的问题就出现了。分析了非生物目标模仿物的特性,包括明胶、肥皂、橡皮泥块、Pankratov靶和弹道凝胶块。在研究非致命动力武器打击要素的效果时,选择弹道塑料块作为目标模拟物是有根据的。本文介绍了由于冲击元件的作用,弹塑性塑料“Beschussmasse”的温度对最终空腔体积影响的初步实验研究结果。研究结果表明了这种冲击的重要性,以及建立最终空腔体积与块体材料温度和冲击元件动能的依赖关系的必要性。
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引用次数: 0
METHOD OF CALCULATING THE NECESSARY NUMBER OF SPECIALISTS FOR CARRYING OUT HUMANITARIAN DEMINING OF DANGEROUS TERRITORIES OF UKRAINE 计算在乌克兰危险领土进行人道主义排雷所需专家人数的方法
IF 0.1 Pub Date : 2023-01-01 DOI: 10.33405/2409-7470/2023/1/41/280860
M. Ivanets, S. Horelyshev, A. Artykula
One of the greatest and most terrible calamities for humanity throughout history has always been war. It is accompanied by significant material and human losses, contributes to the spread of other disasters, slows down the development of mankind and generally raises serious questions about the possibility of further survival of people on planet Earth. Every year, the power of weapons becomes more powerful, and the consequences of their use are more and more terrible. As a result of russia's armed aggression and the terrorist nature of hostilities, a large number of explosive objects remained on the territory of Ukraine, which for one reason or another did not explode. This creates real serious threats to the normal life of the population. In the post-war period, an urgent problem will be a complete survey of dangerous areas and infrastructure facilities for the presence of explosive objects, detection, neutralization and their destruction. The implementation of a set of measures for humanitarian demining requires clear planning and organization of all works for the disposal and destruction of unexploded ordnance. At the same time, a well-founded approach to technical support, training of relevant specialists of various types, time calculations of work deadlines is necessary. The article has developed a methodology for calculating the required number of specialists and technical equipment for humanitarian demining dangerous territories of Ukraine, which allows to estimate the general term of solving this problem, the number of personnel and technical equipment to perform the necessary work. If necessary, the proposed mathematical apparatus allows solving the inverse problem as well: based on a specific deadline for solving the problem, estimate the required total number of personnel and the required total amount of technical equipment to perform the work in the allotted time. A control algorithm for the implementation of this technique is proposed, which includes 18 blocks placed on 6 hierarchical levels and connected by direct and feedback links. This makes it possible to implement the developed methodology in the real conditions of the performance of the assigned tasks.
人类历史上最大、最可怕的灾难之一就是战争。它伴随着重大的物质和人员损失,助长了其他灾害的蔓延,减缓了人类的发展,并普遍对人类在地球上进一步生存的可能性提出了严重的问题。每年,武器的力量变得越来越强大,使用武器的后果也越来越可怕。由于俄罗斯的武装侵略和敌对行动的恐怖主义性质,大量爆炸物留在乌克兰领土上,这些爆炸物由于这样或那样的原因没有爆炸。这对人民的正常生活造成了真正严重的威胁。在战后时期,一个紧迫的问题将是对危险地区和存在爆炸物体的基础设施进行全面调查、探测、中和和销毁。执行一套人道主义排雷措施需要明确规划和组织处理和销毁未爆弹药的所有工作。同时,有必要对技术支持、培训各种类型的相关专家、计算工作截止日期的时间采取有根据的办法。这篇文章提出了一种计算在乌克兰危险领土进行人道主义排雷所需的专家和技术设备数量的方法,从而可以估计解决这一问题的一般期限,即执行必要工作所需的人员和技术设备的数量。如有必要,所提出的数学装置也可以求解反问题:根据解决问题的具体期限,估计在规定时间内完成工作所需的人员总数和所需的技术设备总数。提出了实现该技术的控制算法,其中包括放置在6个层次上的18个块,并通过直接和反馈链接连接。这使得在执行指定任务的实际情况下实施所开发的方法成为可能。
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引用次数: 0
COMPUTER MODELLING OF SCATTERING OF E-POLARISED WAVES ON A SHIELDED GC-LIKED REFLECTOR SYSTEM 屏蔽类gc反射器系统中电子极化波散射的计算机模拟
IF 0.1 Pub Date : 2023-01-01 DOI: 10.33405/2409-7470/2023/1/41/280880
V. Dushkin
Computer simulation of electromagnetic wave scattering on a shielded periodic reflector system, with a special period structure is considered. The electrodynamic reflective structure consists of a screen and a periodic system of strips. The cross-section of the strips is a system of segments formed by the principle of constructing a generalized Cantor set at each of the periods. Іt was used a mathematical model based on the reduction of the initial boundary value problems for the Helmholtz equation to systems of singular integral equations. The choice of this approach did not require analytical calculations when changing the number of lattice elements. Using this approach, it was not necessary to make changes to the computer implementation of the algorithm. The computer experiment has proved the possibility of applying the discrete singularities method computational scheme for the considered structure. It is proved that the structure constructed according to the proposed principle has the properties of broadband and multimode for the studied values of the structure parameters. In particular, for the studied structures, the resonance occurred when the wavenumber was changed from 0 to 50, with a significant increase in amplitude occurring at harmonics with numbers up to 40. This phenomenon led to a complex structure of the lines of the absolute values of the amplitude of the scattered electric field above the grating. The presence of small areas with an increase in the amplitude of the scattered field by a factor of 5-6 compared to the amplitude the incident electromagnetic wave was observed. These properties show practical interest in the use of this type of antennas to improve electronic camouflage and tactical radio communications. In the future, it is planned to conduct computer simulations for imperfectly conducting structures and compare the results with the numerical results for the ideal case discussed in this paper.
研究了具有特殊周期结构的屏蔽周期反射器系统中电磁波散射的计算机仿真问题。电动力反射结构由一个屏幕和一个周期性的条带系统组成。条带的横截面是由在每个周期构造广义康托集的原理形成的段的系统。Іt是一个基于将亥姆霍兹方程的初边值问题简化为奇异积分方程组的数学模型。当改变晶格元素的数量时,选择这种方法不需要分析计算。使用这种方法,不需要对算法的计算机实现进行更改。计算机实验证明了将离散奇异点法计算方案应用于所考虑结构的可能性。根据所研究的结构参数值,证明了根据所提出的原理构建的结构具有宽带和多模的特性。特别地,对于所研究的结构,当波数从0变化到50时,共振发生,当波数达到40时,振幅显著增加。这种现象导致光栅上方散射电场振幅绝对值线的复杂结构。与入射电磁波的振幅相比,小区域的散射场振幅增加了5-6倍。这些特性显示了使用这种类型的天线来改进电子伪装和战术无线电通信的实际兴趣。在未来,计划对不完全导电结构进行计算机模拟,并与本文讨论的理想情况下的数值结果进行比较。
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引用次数: 0
ASSESSMENT OF THE ENVIRONMENTAL RISK OF ENVIRONMENTAL POLLUTION BY ROAD 道路环境污染环境风险评价
IF 0.1 Pub Date : 2023-01-01 DOI: 10.33405/2409-7470/2023/1/41/280892
I. Shasha, I. Tsebriuk, Yе. I. Bondar
Assessment of the quality of traffic management and design solutions in the field of traffic management in cities, complex systems for organizing the movement of cities with a population of more than 100 thousand people residents, temporary schemes of organization for the period of overlapping of significant sections of the street network is combined with the need to take into account a large amount of data to resolve contradictions of uncertainty of an objective and subjective nature. Taking into account the variety of factos to assess the effectiveness of the organization and management of traffic is possible only for small sections of the street network using advanced information technologies to improve the quality of automated traffic management through the implementation of optimization principles. The effectiveness of traffic management can be assessed by many factors that depend on its management. As an objective function of traffic management, a number of authors suggest using the following values: the number of road accidents, socio-economic damages from road accidents, the amount of harmful substances, the total travel time along the route, the number of stops per trip, the skip rate, the average delay of the crew per cycle, the average downtime, connection speed, traffic intensity, etc. The proposed calculations of the amount of the total risk and the average length of a person's life, which use basic normative data, allow to give a quantitative assessment of the danger of atmospheric air pollution. In this regard, environmental risk can be applied as an objective function of traffic management. As can be seen from the above results, both the environmental risk, and the time the car travels from one point to another, and fuel consumption are determined depending on the delays of vehicles in front of regulated intersections. Therefore, it is advisable to recommend as a target function for optimizing traffic management the value of the total time of vehicle delays in front of intersections of the urban street network in one cycle of regulation.
城市交通管理领域的交通管理质量评估和设计解决方案,组织10万以上居民人口的城市运动的复杂系统,结合路网重要路段重叠期间的临时组织方案,需要考虑大量数据,以解决客观和主观不确定性的矛盾。考虑到各种因素来评估组织和管理交通的有效性是可能的,只有对小路段的街道网络利用先进的信息技术,通过实施优化原则来提高自动化交通管理的质量。交通管理的有效性可以通过许多依赖于其管理的因素来评估。作为交通管理的目标函数,一些作者建议使用以下值:道路事故数量、道路事故造成的社会经济损失、有害物质的数量、沿途的总旅行时间、每趟行程的停靠次数、跳车率、每周期机组人员的平均延误时间、平均停机时间、连接速度、交通强度等。拟议的总危险度和人均寿命的计算方法使用基本的规范数据,可以对大气污染的危险进行定量评估。在这方面,环境风险可以作为交通管理的一个目标函数。从以上结果可以看出,环境风险、车辆从一个点行驶到另一个点的时间和油耗都取决于车辆在管制路口前的延误。因此,建议将一个调控周期内城市路网交叉口前车辆延误总时间值作为优化交通管理的目标函数。
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引用次数: 0
METHODS OF ENSURING THE DEFINED LEVEL OF COMBAT SURVIVAL OF ARMORED WHEELED VEHICLES 保证装甲轮式车辆战斗生存水平的方法
IF 0.1 Pub Date : 2023-01-01 DOI: 10.33405/2409-7470/2023/1/41/280883
R. Kaidalov, O. Bilenko, S. K. Kudimov
The experience of military conflicts of the last decades has shown the constantly growing role of armored wheeled vehicles (AWVs). In recent years, a significant number of AWVs of various purposes have been developed and adopted by the security forces of Ukraine: armored personnel carriers; carriers of anti-tank weapons, anti-aircraft weapons, mortars; machines of radio-electronic intelligence and radio-electronic warfare; medical evacuation vehicles, etc. AWVs that deliver personnel to the battlefield, provide their fire support, or are equipped with powerful weapons and other combat equipment are being the priority targets for the enemy. AWVs damages significantly reduce the probability (or completely makes it impossible) to perform a specific combat task, therefore there is an objective need to ensure a certain minimum level of survivability of an armored wheeled vehicle in order to preserve its combat capability and ensure the performance of the intended tasks. Therefore, the purpose of the article is to create a methodology for ensuring a given level of combat survivability of armored wheeled vehicles. A technique for ensuring a given level of combat survivability of AWVs has been developed. It allows to obtain combat survivability indicators that correspond to a given level of combat survivability by the consistent improvement of the vehicle operational characteristics. The methodology can be used to form the requirements for the technical characteristics of armored wheeled vehicles at the stage of their development and modernization, as well as to assess the compliance of the existing AWVs with the requirements for combat survivability. The direction of further research is to study the impact of other armored wheeled vehicles properties on combat survivability.
过去几十年的军事冲突经验表明,装甲轮式车辆(awv)的作用不断增强。近年来,乌克兰安全部队研制并采用了数量可观的各种用途的运兵车:装甲运兵车;携带反坦克武器、防空武器、迫击炮;无线电电子情报和无线电电子战机器;医疗后送车辆等。运送人员到战场,提供火力支援,或配备强大武器和其他战斗装备的awv是敌人的优先目标。awv的损伤大大降低(或完全使其不可能)执行特定战斗任务的可能性,因此客观需要确保装甲轮式车辆的最低生存能力,以保持其作战能力并确保预期任务的执行。因此,本文的目的是创建一种方法,以确保装甲轮式车辆的战斗生存能力的给定水平。一种确保awv在一定水平上的战斗生存能力的技术已经被开发出来。它允许获得战斗生存能力指标,对应于一个给定水平的战斗生存能力,通过持续改进车辆的操作特性。该方法可用于形成装甲轮式车辆在其发展和现代化阶段的技术特性要求,以及评估现有awv与作战生存能力要求的合规性。进一步的研究方向是研究其他装甲轮式车辆性能对作战生存能力的影响。
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引用次数: 0
SUBSTANTIATION OF THE METHODOLOGY FOR CALCULATING THE FUEL CONSUMPTION AND FUEL STATUS UNITS FOR PUBLIC UTILITY NEEDS DURING THE PREPARATION FOR COMBAT ACTIONS 确定在准备作战行动期间公用事业所需的燃料消耗和燃料状态单位的计算方法
IF 0.1 Pub Date : 2023-01-01 DOI: 10.33405/2409-7470/2023/1/41/280857
M. Derevianko, P. Hetman, V. Mudryk
The paper substantiates the urgency of using methodological recommendations for calculating the fuel consumption to find the public utility needs solutions in the field conditions, which is an integral component of housing maintenance in the general system of logistics support of troops. In order to create normal living conditions, to cook hot food, to maintain a favourable temperature regime inside the buildings and warming posts for personnel, at duty stations, it is necessary to have a scientific and methodological apparatus that will allow to make the correct and well grounded decision on units’ fuelling to find the public utility needs solutions in the field conditions. Especially when performing combat missions, the timely and uninterrupted solution of public utility issues plays a significant role in increasing combat readiness and maintaining a high morale and psychological condition of servicemen. The final result of calculating the fuel requirement to find the public utility needs solutions is influenced by a large number of various factors that must be taken into account when conducting appropriate calculations and planning and organizational measures. With the help of the proposed expressions, it is possible to determine the fuel consumption for public utility needs, for hot food cooking both for a separate duty station (subunit) and for a military unit (grouping) as a whole.
本文证实了迫切需要使用方法建议来计算燃料消耗,以找到外勤条件下公用事业需求的解决方案,这是部队后勤支助一般系统中住房维修的一个组成部分。为了在工作地点创造正常的生活条件,烹饪热食物,在建筑物内维持有利的温度制度和为工作人员提供温暖,必须有一种科学和方法仪器,以便对单位加油作出正确和有根据的决定,以便在实地条件下找到公用事业需求的解决办法。特别是在执行作战任务时,及时、不间断地解决公用事业问题,对提高战备水平、保持军人高昂的士气和心理状态具有重要作用。计算燃料需求以找到公用事业需求解决方案的最终结果受到大量各种因素的影响,这些因素在进行适当的计算和规划以及组织措施时必须考虑到。在建议的表达式的帮助下,可以确定公用事业需要的燃料消耗量,一个单独的工作地点(子单位)和一个军事单位(组)作为一个整体的热食物烹饪的燃料消耗量。
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引用次数: 0
LEGAL REGULATION OF FUEL AND LUBRICANT SUPPLY SERVICES: ANALYSIS OF PROBLEMS AND PROPOSALS FOR THEIR SOLUTION 燃料和润滑油供应服务的法律规定:问题分析和解决建议
IF 0.1 Pub Date : 2023-01-01 DOI: 10.33405/2409-7470/2023/1/41/280864
D. Kupriyenko, V. Sahan, N. Levchuk
The article is devoted to the analysis of the state of regulatory and legal regulation of the activity of the fuel and lubricant supply service of the State Border Guard Service of Ukraine. The official duties of the officials of the fuel and lubricant supply service are determined by the Statutes of the Armed Forces of Ukraine, the order of the Administration of the State Border Guard Service of Ukraine dated June 24, 2008 No. 544 "On the approval of the Guidelines on the provision of fuel to the bodies of the State Border Guard Service of Ukraine", as well as the order of the Administration of the State Border Guard Service of Ukraine of the Border Service of Ukraine dated December 21, 2020 No. 134 "On the approval of the Advisor on military (ship) management of the State Border Service of Ukraine." The review of the regulatory legal support of the fuel and lubricant supply service of the State Border Guard Service of Ukraine made it possible to establish that the duties of the officials of the fuel and lubricant supply service include tasks related to: monitoring the quality and proper use of fuel, planning the necessary efficiency measures and feasibility of using and saving fuel; organization of maintenance, improvement and operation of fuel warehouses, filling stations and other subordinate fuel service facilities in accordance with current regulatory documents; ensuring proper use, maintenance and storage of technical means; organization and maintenance of accounting and reporting on fuel service; collection, delivery and proper use of spent oil products, etc. The procedure for performing these tasks must be regulated by relevant departmental acts. At the same time, the governing documents of the State Border Service of Ukraine and the Ministry of Internal Affairs of Ukraine do not define the procedure for performing the specified tasks. According to the authors, it is the task that regulates the order and conditions of storage of fuel and lubricant materials, special liquids at fuel warehouses and filling stations; tasks of fuel quality control; maintenance of technical means of the fuel and lubricant supply service are fundamentally important for the high-quality organization of the activities of state border protection units and must be regulated for the high-quality performance of official duties by officials of the State Border Service of Ukraine, who are assigned the tasks of organizing and managing the military (ship) economy.
本文致力于分析乌克兰国家边防局燃料和润滑油供应服务活动的监管和法律监管状况。燃料和润滑油供应服务部门官员的官方职责由乌克兰武装部队章程、乌克兰国家边防局管理局2008年6月24日第544号“关于批准向乌克兰国家边防局机构提供燃料的准则”的命令确定。以及乌克兰国家边防局管理局2020年12月21日第134号“关于批准乌克兰国家边防局军事(船舶)管理顾问”的命令。对乌克兰国家边防局燃料和润滑油供应处的监管法律支助进行审查后,可以确定燃料和润滑油供应处官员的职责包括以下任务:监测燃料的质量和正确使用,规划必要的效率措施以及使用和节约燃料的可行性;按照现行规范性文件组织燃料仓库、加油站和其他附属燃料服务设施的维护、改进和运行;确保技术手段的正确使用、维护和储存;组织和维护燃油服务的会计和报告;废油产品的收集、运送和正确使用等。执行这些任务的程序必须由有关部门的法律规定。同时,乌克兰国家边境服务局和乌克兰内务部的管理文件没有规定执行特定任务的程序。据提交人说,这项任务规定了燃料仓库和加油站储存燃料和润滑剂材料、特殊液体的次序和条件;燃油质量控制任务;燃料和润滑油供应服务的技术手段的维护对于国家边境保护单位活动的高质量组织至关重要,必须对乌克兰国家边境服务局官员的高质量履行公务进行规范,他们被分配了组织和管理军事(船舶)经济的任务。
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引用次数: 0
3 D MODELING OF FOUR-AXLE MACHINE MANEUVERING 四轴机械操纵的三维建模
IF 0.1 Pub Date : 2023-01-01 DOI: 10.33405/2409-7470/2023/1/41/280889
O. Chernikov, V. Garmash
One of the ways to increase the maneuverability of the wheeled vehicles of the National Guard of Ukraine is to use a four-axle wheeled chassis with two turntables, which will allow the machine to turn with the smallest radius, move crab, sideways and turn around its own vertical axis. The creation of such a chassis is associated with a large amount of various experiments and tests of the finished sample. The development of computer technology and technologies has led to the creation of software applications for computer (simulation) modeling, which allow research and study of the properties of technical objects and systems under different conditions. The article developed a digital model of the chassis of a four-axle machine with two turntables and identified its features. For modeling, a powerful package of solid modeling Autodesk Inventor was chosen, which provides a comprehensive flexible set of tools for 3D design, visualization, instrumentation, analysis and calculations. When building a general 3D model of the chassis, the main features of the layout of parts and assemblies of this wheeled vehicle were taken into account. The forced rotation of the wheels and the rotation of the platforms were modeled by entering the value of a single parameter or setting using a graph. Depending on the needs of the experiment, graphs were set for displacements, speed or acceleration. In the course of a visual experiment, a simulation of the maneuvering of a four-axle vehicle was carried out for three options: turning the chassis to move in the opposite direction; changing the direction of movement through the turn of the chassis is a difficult maneuver; turning the chassis for sideways movement. The analysis of virtual studies showed that the control of the front, rear or both turntables is a promising way to increase the maneuverability of wheeled vehicles. In addition, the created computer prototype allows you to determine the main characteristics of the future product, carry out analysis, upgrade and necessary modification, set the desired trajectory of movement, including when passing through obstacles.
提高乌克兰国民警卫队轮式车辆机动性的方法之一是使用带有两个转盘的四轴轮式底盘,这将允许机器以最小的半径旋转,移动螃蟹,侧向移动和围绕自己的垂直轴旋转。这种底盘的创建与成品样品的大量各种实验和测试有关。计算机技术和技术的发展导致了计算机(仿真)建模的软件应用程序的创建,这使得研究和研究技术对象和系统在不同条件下的属性成为可能。本文建立了带有两个转盘的四轴机床底盘的数字模型,并对其特征进行了识别。对于建模,选择了强大的实体建模软件包Autodesk Inventor,它为3D设计,可视化,仪器,分析和计算提供了一套全面灵活的工具。在建立轮式车辆底盘总体三维模型时,考虑了轮式车辆零部件布局的主要特点。通过输入单个参数的值或使用图形进行设置,对车轮的强制旋转和平台的旋转进行建模。根据实验需要,可以设置位移、速度或加速度的图形。在视觉实验过程中,对四轴车辆进行了三种机动仿真:将底盘转向反方向运动;通过底盘的转动来改变运动方向是一个困难的操作;把底盘为侧向运动。仿真分析表明,对轮式车辆的前后转台或双转台进行控制是提高轮式车辆机动性能的有效途径。此外,创建的计算机原型可以让您确定未来产品的主要特性,进行分析,升级和必要的修改,设置所需的运动轨迹,包括通过障碍物时。
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引用次数: 0
COMPARATIVE STUDY OF THE OPERATION OF THE PT-800 AND PN-800 CONVERTERS IN THE 2E42 TANK WEAPON STABILIZER IN THE START-UP AND EMERGENCY MODES 2e42坦克武器稳定器pt-800和pn-800转炉在启动和应急模式下运行的对比研究
IF 0.1 Pub Date : 2023-01-01 DOI: 10.33405/2409-7470/2023/1/41/280884
Yuri Krasnoshapka, K. Korycthenko, O. Martynenko, I. Tsebriuk, H. Radionov
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引用次数: 0
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DOKLADY NATSIONALNOI AKADEMII NAUK BELARUSI
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