Microwave Heating as an Innovative Road Maintenance Technology: Aging Effect on Binder and Feasibility Evaluation

The microwave heating/healing technique is regarded as a green maintenance approach for asphalt pavements thanks to its promising environmental and economic benefits. However, the main concern about this technology is represented by the possible aging effect generated on bituminous binders. Currently, there is a significant lack of studies dealing with this topic. Based on these premises, the main purpose of this study is to appraise the feasibility of implementing microwave-based maintenance operations considering the associated aging effect. The assessment of fatigue life after cyclic microwave heating (MH) based on a linear amplitude sweep (LAS) test and the changes in the chemical groups detected through Fourier transform infrared (FTIR) spectroscopy document the aging phenomenon. The results indicate that the microwave aging degree on bituminous binder is nonlinear with MH cycles. The microwave radiation causes a distinct aging impact on binders during the first 10 cycles, then the values become constant. Furthermore, a feasibility analysis of MH technology is developed, encompassing four main multidisciplinary aspects: evaluation of microwave aging degree, working mechanism of MH equipment, safety assessment, and economic and ecological considerations. Despite the associated aging issue, the MH method is an efficient technology, considering its various advantages (i.e., rapidity of execution, uniform and non-pollutant treatment, and deep penetration). Meanwhile, the use of steel slag as a microwave absorber bolsters the sustainability of MH technology. This study provides a new perspective to evaluate the microwave heating technique in road engineering comprising the generated aging effect. Practice-oriented recommendations are also formulated regarding the safe implementation of MH technical operations.

Research on hazard installations identification method of power equipment in ship

Hazard installation identification was the key and difficult point for ship power equipment safety management. According to the characteristics of ship power equipments, this article analyzed the characteristic of hazard installations, given the range and classification of hazard installation identification. Combining hazard installation checklist and routing inspection, the method and process of hazards installation identification was proposed for ship power equipment, which laid a foundation for its risk assessment and control.

Analisis Risiko dan Determinan Kejadian Kecelakaan Kerja di Pabrik Minyak Kelapa Sawit

Safety at work is a series of safety related to machines, work tools, materials and work processes, workplace and environment as well as working methods. Jambi Province is an area that has extensive plantation land, especially for oil palm plantations, based on data from the Central Bureau of Statistics at Provinceof Jambi in 2018. PT. X was experienced the highest incidence of work accidents in the 2017-2019 range in Jambi Province. This study aims to analyze the risks and determinants of workplace accidents at the palm oil mill at PT. X as an effort to prevent work accidents. This research is analytical research. The population of this study were all workers in the production division of PT. X as many as 96 people consisting of two work shifts and were also used as samples in this study. The data will be analyzed to see the relationship between variables using the Chi-Square test with (α = 0.05). There is a relationship between the availability of personal protective equipment (PPE), environmental factors and the use of personal protective equipment (PPE) with the incidence of work accidents in the production division workers of PT. X while working period, attitude, training and equipment safety are not related in this study.

On the safety management of fishing equipment and fishing technologies on sea fishing vessels

С учетом обстоятельств гибели морских рыболовных судов «Онега» (2020 г.) и «Дальний Восток» (2005 г.) выполнен обобщенный сравнительный анализ установленных нормативных требований к таким судам, включая применяемое промысловое оборудование, механизмы и устройства. Были изучены восемь отечественных и международных нормативных документов, содержащих отдельные технические требования к проектированию, строительству, наблюдению за постройкой рыболовных судов. Получено, что такого рода требования приводятся в самом общем виде, без какой-либо детализации. Требования из разных документов по одному и тому же параметру сравнивались по полноте и уровню обеспечения безопасности. Исследовано содержание Правил по охране труда при добыче (вылове), переработке водных биоресурсов и производстве отдельных видов продукции из водных биоресурсов, ОСТ 15.217-79 «Система стандартов безопасности труда. Суда промыслового флота. Оборудование промысловое. Требования безопасности», Правила классификации и постройки морских судов Российского морского регистра судоходства, Международные правила по безопасности рыболовных судов, Технические рекомендации по обеспечению здоровых и безопасных условий труда и обитания на промысловых судах при качке и заливаемости, Правила классификации и постройки малых рыболовных судов Российского морского регистра судоходства, Правила технического наблюдения за постройкой судов и изготовлением материалов и изделий для судов. Обоснована необходимость включения всего комплекса промыслового оборудования, механизмов, переоборудования морских рыболовных судов под технический контроль Российского морского регистра судоходства. Taking into account the circumstances of the sinking of the sea fishing vessels Onega (2020) and the Far East (2005), a generalized comparative analysis of the established regulatory requirements for such vessels, including the used fishing equipment, mechanisms and devices, was carried out. Eight national and international regulatory documents were studied, containing separate technical requirements for the design, construction, supervision of the construction of fishing vessels. It was found that such requirements are given in the most general form, without any detail. Requirements from different documents for the same parameter were compared in terms of completeness and level of security. The content of the Rules for labor protection during the extraction (catching), processing of aquatic biological resources and the production of certain types of products from aquatic biological resources, OST 15.217-79 “System of labor safety standards. Fishing fleet vessels. Fishing equipment. Safety Requirements ", Rules for the Classification and Construction of Sea-Going Ships of the Russian Maritime Register of Shipping, International Rules for the Safety of Fishing Vessels, Technical Recommendations for Ensuring Healthy and Safe Working Conditions and for Ensuring Heaving and Flooding on Fishing Vessels, Rules for the Classification and Construction of Small Fishing Vessels of the Russian Maritime Register of Shipping, Rules for Technical Supervision over the Construction of Ships and Manufacture of Materials and Products for Ships. The necessity of including the whole complex of fishing equipment, mechanisms, re-equipment of sea fishing vessels under the technical control of the Russian Maritime Register of Shipping has been substantiated.

Management of pacemaker patients after myocardial infarction

Myocardial infarction (MI) is the leading cause of death and disability in the population. Effective restoration of coronary blood flow in the infarction-dependent artery during percutaneous coronary intervention contributes to the regression of structural and functional remodeling of the left ventricle. Meanwhile, in 18% of cases, patients with myocardial infarction require implantation of a pacemaker because of the cardiac conduction disorders, among which atrioventricular blockade is the leading one. The need for pacemaker implantation is determined by the clinical features and the type of bradycardia complicating myocardial infarction. The scope of preventive measures at the stage of outpatient specialized cardiac care for patients with myocardial infarction and pacemaker includes medical, physical, and psychological rehabilitation. In addition, the presence of an implantable pacemaker necessitates specialized dynamic monitoring by an arrhythmologist, including programming the pacemaker. Performing a magnetic test allows to assess the efficiency of the pacemaker, the level of its charge and promptly determine the need to its replacement. Determination of the pacing threshold ensures efficient operation of the implantable device. After discharge from the hospital, a schedule for checking the pacemaker is determined, namely, 3 months after the date of implantation of the pacemaker, then 1-2 times a year. In the event of complaints of dizziness, fainting or damage of the pacemaker implantation site, the pacemaker check is carried out unscheduled. Patients with a history of myocardial infarction and an implantable pacemaker should be informed about the limitations that may be associated with the presence of a pacemaker. It is recommended to exclude contact with possible sources of electrical interference as much as possible, to avoid medical physiotherapy using galvanic currents. When using industrial or household equipment, safety precautions must be followed.

ANALYSIS OF THE CURRENT STATE OF THE CONTAINER TRANSPORTATION MARKET AND WAYS OF ITS DEVELOPMENT ON THE CHINA-UKRAINE-EU ROUTE

Considering the globalization of international market relations, the article deals withthe modern market for international container traffic on the China-Ukraine-EU route. Through myresearch, it has become clear that the international rail container transportation market is evolvingrapidly and the development of railway infrastructure is rapidly becoming a lucrative investment.The potential is evident as demonstrated by the fact that China is considering rail containertransportation as an effective alternative to the traditional transportation methods such as sea- andairfreight intermodal container transportation of goods in the nearest future. There are distinctadvantages to rail container transportation, namely: versatility; mobility; distribution of containerhandling equipment; safety of cargo as well as speed of delivery. The article points out the majorproblems related to container transportation in Ukraine: poor condition of highways; deteriorationof rolling stock and railway infrastructure in general; lack of sufficient quantity and low availabilityof modern equipment at container terminals in Ukraine; a low competitive level of transport service;high level of bureaucracy on the railway and in customs clearance. In a free-market economy and,in particular, during industry restructuring, the author proposes a new approach to organizecontainer transportation in Ukraine and for the Ukrainian railway, which should reduce the costs ofrailway traffic , on the one hand, and make it more attractive to the users, thereby confirming itscompetitive advantages. The author came to the conclusion that, owing to the development of therailway infrastructure, namely the construction of a container logistics system and high-speedrailways on the territory of Ukraine, it is possible to not only reach a competitive level of transitstates on the China-EU route but also to take a preferred position as the most economical and fastest means of transit, obtaining a substantial profit and an incentive for the further development of thetransit potential of our country.