World Science最新文献

{"title":"ASSESSMENT OF THE IMPACT OF FLY ASH ON THE TECHNOLOGICAL AGING OF BITUMEN IN THE ASPHALT BINDER SYSTEM","authors":"V.I. Kaskiv, O.V. Sokolov, V.V. Mozghovyi","doi":"10.31435/rsglobal_ws/30032024/8109","DOIUrl":"https://doi.org/10.31435/rsglobal_ws/30032024/8109","url":null,"abstract":"In Ukraine, about 30% of all electricity is generated from the combustion of solid fuels such as coal, oil shale, and peat. In our country, there are about 15 operating thermal power plants that generate about 5-6 million tons of ash and slag waste per year. Thus, the fuel and energy sector waste generated in the furnaces of thermal power plants is a huge accumulation of ash in the form of dusty residues and lumpy sludge, as well as various ash and slag mixtures. These products of high-temperature treatment (1200 °C - 1700 °C) of the mineral part of the fuel are widely used in many countries of the world, and given the global trend towards an increase in the share of the secondary market for waste, we should predict an increase in the rate of their processing in Ukraine.In Ukrainian practice, asphalt concrete is mainly used as a mineral powder obtained by grinding carbonate rocks in accordance with DSTU B V.2.7-119 and DSTU B V.2.7-121. At the same time, millions of tons of dusty waste - fly ash - are generated at Ukrainian power generating enterprises as a result of coal combustion. This material meets the requirements of DSTU B V.2.7-121 and can be used for the production of asphalt mixtures. However, it has not been sufficiently studied how fly ash affects the technological aging of bitumen.The aim of this study is to evaluate the effect of fly ash aggregates on the technological aging of bitumen in the asphalt binder system in comparison with traditional mineral powders of various origins. It was found that fly ash is close to the performance of limestone aggregate and can be used as an asphalt filler in asphalt concrete.As a result of the laboratory studies and analysis of the results of the impact of technological aging on the asphalt binder, we can state that the aging index of asphalt binder with fly ash is intermediate between limestone mineral powder and granite dust and is close to that of asphalt binder with limestone mineral powder. This may indicate that the use of fly ash as a mineral powder in asphalt mixtures will not negatively affect their technological aging. Other studies of the physical and mechanical properties of asphalt concrete with fly ash performed by the authors allow us to conclude that fly ash, as a material, is suitable for use as an aggregate for asphalt concrete mixtures.","PeriodicalId":512121,"journal":{"name":"World Science","volume":" 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140388048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"EXPLORING THE POSSIBILITIES OF SOME CONTEMPORARY PHYSICAL THERAPY METHODS FOR THE CONSERVATIVE TREATMENT OF CARPAL TUNNEL SYNDROME","authors":"RS Global, Author Evgeniya Vladeva","doi":"10.31435/rsglobal_ws/30032024/8108","DOIUrl":"https://doi.org/10.31435/rsglobal_ws/30032024/8108","url":null,"abstract":"Carpal tunnel syndrome (CTS) is the most common compression neuropathy, affecting nearly 5% of the general population. The modern approach to its treatment is complex and includes early diagnosis, prevention and treatment of all conditions and diseases leading to its manifestation. \u0000Many authors have worked on the problems related to the possibilities of physical therapy in treating CTS, but the question of optimal treatment and rehabilitation remains relevant to this day. In practice, various rehabilitation programs are constantly being implemented and developed. Many have demonstrated positive outcomes, but work in this area persists. Every novel approach or integration of established physiotherapeutic and rehabilitation techniques enhances the current methods and expands the potential for more comprehensive functional recovery of the impaired limb, as well as the patient's restoration to their previous lifestyle. \u0000Physical therapy has advanced significantly in recent decades due to the introduction of numerous new techniques and technologies. The article offers a brief literature overview of several contemporary physical medicine approaches that can be applied in the conservative treatment of carpal tunnel syndrome based on their physiological and therapeutic effects. Modern physical therapy approaches can be a viable alternative to established physical therapy methods like ultrasound, low-level laser, iontophoresis, magnetotherapy, TENS, and others. It is crucial to conduct additional qualitative and comprehensive investigations to verify the effectiveness of physical therapy in treating CTS, identify the most efficient ways, and create improved protocols for its conservative treatment.","PeriodicalId":512121,"journal":{"name":"World Science","volume":"152 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140249847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"MODERN APPROACHES TO THE TREATMENT OF PURULENT WOUNDS OF THE BOTTOM OF THE ORAL CAVITY AND NECK WITH THE USE OF BLUE LIGHT AND BACTERIOPHAGES","authors":"RS Global, Abdyrakman Moldalievich, Azimbaev Nurlanbek, Moldaliev Mukhtaralievich, Zhoomart Tumakovich, Yeshiev Abdyrakman Moldalievich, Azimbaev Nurlanbek Mukhtaralievich, Moldaliev Zhoomart, Tumakovich","doi":"10.31435/rsglobal_ws/30032024/8086","DOIUrl":"https://doi.org/10.31435/rsglobal_ws/30032024/8086","url":null,"abstract":"The most common oral diseases are: dental caries and periodontitis. The low level of prevention and untimely detection of diseases lead to the development of complications (periostitis, abscess, phlegmon, etc.). The problem of purulent infection in the maxillofacial area, as a section of general surgery, is equally relevant at the present stage and also does not show a tendency to decrease. The purpose of the study was to study the effectiveness of treating purulent wounds with blue light irradiation in combination with a bacteriophage. The material for the study was 100 people with phlegmon of the floor of the mouth and neck, who were treated in the Department of Maxillofacial Surgery of the Osh Interregional United Clinical Hospital. To carry out etiotropic antibiotic therapy, the quantitative and qualitative composition of the microbial flora has been studied. All patients with phlegmon of the bottom of the mouth and neck were drained according to our method “Method of opening phlegmon of the bottom of the mouth and neck with a “U” shaped incision (Patent of the KR No. 1876).” It has been established that complex treatment using blue light and bacteriophage has a positive effect on a purulent wound from the first hours. The main feature of the wound process in the treatment of purulent wounds using blue light with a wavelength of 450 nm and bacteriophage is accelerated wound healing, rapid maturation of fibroblasts in granulation tissue, active formation of collagen fibers and a less pronounced inflammatory reaction. Results of morphological studies: an increase in the phagocytic activity of neutrophils, activation of the proliferation of cellular elements of the macrophage and fibroblastic series, angio and collagenogenesis, accelerated maturation and fibrosis of granulation tissue were established. Microbiological studies have shown a decrease in bacterial contamination of wound tissues compared to traditional treatment.","PeriodicalId":512121,"journal":{"name":"World Science","volume":" 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139626650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}