Qingmin Si, Yonghang Zhao, Junyan Li, Hang Wang, Kai Zhai
Runway excursion accidents in the aircraft landing stage are the emphasis in civil aviation safety management. Correctly analyzing and evaluating the influencing factors of runway excursion accidents are the key issues in the current research. In this study, a fault tree model was established to the runway excursion accident risk in the aircraft landing stage based on the fault tree analysis method. Then, the basic events leading to aircraft runway excursions were summarized
{"title":"Risk Cause Analysis of Runway Excursion Accidents in the Aircraft Landing Stage through Integrated FTA-BN Method","authors":"Qingmin Si, Yonghang Zhao, Junyan Li, Hang Wang, Kai Zhai","doi":"10.25103/jestr.171.21","DOIUrl":"https://doi.org/10.25103/jestr.171.21","url":null,"abstract":"Runway excursion accidents in the aircraft landing stage are the emphasis in civil aviation safety management. Correctly analyzing and evaluating the influencing factors of runway excursion accidents are the key issues in the current research. In this study, a fault tree model was established to the runway excursion accident risk in the aircraft landing stage based on the fault tree analysis method. Then, the basic events leading to aircraft runway excursions were summarized","PeriodicalId":15707,"journal":{"name":"Journal of Engineering Science and Technology Review","volume":"27 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140465495","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}
Hua Han, Shifu Cui, Yan Lu, Peng Zhao, Xiaolong Zou
To investigate the salt-release performance of salt-storage aggregates, salt-storage aggregates were prepared using magnesium oxychloride cement as a carrier through the addition of chloride salts and sustained-release agents. The different types of salt-storage aggregates were compared and selected through compressive strength and immersion conductivity tests. In addition, the salt-release performance of salt-storage asphalt mixtures was investigated by immersion conductivity tests and simulated rain erosion tests. The results indicate that as a sustained-release agent, polyethylene glycol has a certain adverse effect on the compressive strength of salt-storage aggregates
{"title":"Preparation of Salt-Storage Aggregate using Magnesium Oxychloride Cement and Investigation on Salt-Release Performance","authors":"Hua Han, Shifu Cui, Yan Lu, Peng Zhao, Xiaolong Zou","doi":"10.25103/jestr.171.10","DOIUrl":"https://doi.org/10.25103/jestr.171.10","url":null,"abstract":"To investigate the salt-release performance of salt-storage aggregates, salt-storage aggregates were prepared using magnesium oxychloride cement as a carrier through the addition of chloride salts and sustained-release agents. The different types of salt-storage aggregates were compared and selected through compressive strength and immersion conductivity tests. In addition, the salt-release performance of salt-storage asphalt mixtures was investigated by immersion conductivity tests and simulated rain erosion tests. The results indicate that as a sustained-release agent, polyethylene glycol has a certain adverse effect on the compressive strength of salt-storage aggregates","PeriodicalId":15707,"journal":{"name":"Journal of Engineering Science and Technology Review","volume":"137 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140469975","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}
Nikolaos Pradakis, Konstantinos Marmanis, Theodoros Markopoulos, Michael Maragakis, Maria D. Koffa, Konstantinos E. Tilkeridis
The need for cost-efficient, simple and radiation free technologies in clinical diagnostics has orientated the scientific community in the investigation of techniques such as vibrational spectroscopy. Vibrational spectroscopy due to its simplicity both in sample preparation as well as friendly use combined with the technological evolution in data processing and storage could play a promising role in diagnostics even for multifactorial diseases such as osteoarthritis via biofluid analysis. However, despite the related works aiming in synovial fluid there is not a common line in terms of sample preparation. Hence, it is important to establish an effective sample pretreatment protocol to avoid subjectivity and provide the possibility of reliable comparisons among results. In this work, freeze drying preprocessing technique was compared with natural drying in terms of diagnostic performance in 35 knee synovial fluids aspirated from primary osteoarthritic patients with 2 and 4 Kellgren-Lawrence scores. Principal component analysis combined with mean spectra analysis was implemented for this diagnostic purpose. Results have shown that natural drying technique tends to generate more distinct enhanced interclass variations among synovial dried samples compared to freeze drying, despite the latest potential in other biological samples.
{"title":"Exploring Freeze-Drying as a Method for Diagnostic Optimization of Synovial Fluid Spectroscopic Data: An ATR-FTIR Analysis on Primary Osteoarthritic Patients","authors":"Nikolaos Pradakis, Konstantinos Marmanis, Theodoros Markopoulos, Michael Maragakis, Maria D. Koffa, Konstantinos E. Tilkeridis","doi":"10.25103/jestr.171.04","DOIUrl":"https://doi.org/10.25103/jestr.171.04","url":null,"abstract":"The need for cost-efficient, simple and radiation free technologies in clinical diagnostics has orientated the scientific community in the investigation of techniques such as vibrational spectroscopy. Vibrational spectroscopy due to its simplicity both in sample preparation as well as friendly use combined with the technological evolution in data processing and storage could play a promising role in diagnostics even for multifactorial diseases such as osteoarthritis via biofluid analysis. However, despite the related works aiming in synovial fluid there is not a common line in terms of sample preparation. Hence, it is important to establish an effective sample pretreatment protocol to avoid subjectivity and provide the possibility of reliable comparisons among results. In this work, freeze drying preprocessing technique was compared with natural drying in terms of diagnostic performance in 35 knee synovial fluids aspirated from primary osteoarthritic patients with 2 and 4 Kellgren-Lawrence scores. Principal component analysis combined with mean spectra analysis was implemented for this diagnostic purpose. Results have shown that natural drying technique tends to generate more distinct enhanced interclass variations among synovial dried samples compared to freeze drying, despite the latest potential in other biological samples.","PeriodicalId":15707,"journal":{"name":"Journal of Engineering Science and Technology Review","volume":"85 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140470033","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}
Yongguo Chen, Zhiwei Pan, Liang Ye, Chengze Ye, Jiali Wu, Qing Zhang
To accurately identify the deterioration degree of the surfaces of stone cultural relics and determine how various diseases affect each other, the deterioration research combined with infrared thermography and ultrasonic technology was used to effectively detect the deterioration and current situation of the internal structure of rocks and investigate the different states of limestone specimens. The temperature change laws of surface heating and cooling were examined using the distribution of heat and the conduction phenomenon. Infrared thermography was applied to detect the surface deterioration of stone cultural relics and disease development. Results show the limestone specimen surface’s temperature change rule during heating and cooling. During the aging process of the limestone specimen, the original disease area deteriorates faster and more seriously than the fresh and unweathered area. The 3D map of the temperature distribution processed by infrared thermography can be used to quickly determine the disease area and semi-quantitatively measure the degree of disease development, which is essential to the protection of cultural relics. The obtained conclusions in this study can provide the reference for the protect of stone cultural relics.
{"title":"Experimental Study on Surface Deterioration Disease of Stone Artifacts Based on Infrared Thermography","authors":"Yongguo Chen, Zhiwei Pan, Liang Ye, Chengze Ye, Jiali Wu, Qing Zhang","doi":"10.25103/jestr.171.11","DOIUrl":"https://doi.org/10.25103/jestr.171.11","url":null,"abstract":"To accurately identify the deterioration degree of the surfaces of stone cultural relics and determine how various diseases affect each other, the deterioration research combined with infrared thermography and ultrasonic technology was used to effectively detect the deterioration and current situation of the internal structure of rocks and investigate the different states of limestone specimens. The temperature change laws of surface heating and cooling were examined using the distribution of heat and the conduction phenomenon. Infrared thermography was applied to detect the surface deterioration of stone cultural relics and disease development. Results show the limestone specimen surface’s temperature change rule during heating and cooling. During the aging process of the limestone specimen, the original disease area deteriorates faster and more seriously than the fresh and unweathered area. The 3D map of the temperature distribution processed by infrared thermography can be used to quickly determine the disease area and semi-quantitatively measure the degree of disease development, which is essential to the protection of cultural relics. The obtained conclusions in this study can provide the reference for the protect of stone cultural relics.","PeriodicalId":15707,"journal":{"name":"Journal of Engineering Science and Technology Review","volume":"75 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140470062","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}
Xian Liu, Feiyue Liu, Zhiqiang Yin, Pinghua Zhu, Minggang Wang
{"title":"Study on Crack Propagation Characteristics of Foam Concrete–Soil Composite with Different Height Ratios under Dynamic and Static Loading Conditions","authors":"Xian Liu, Feiyue Liu, Zhiqiang Yin, Pinghua Zhu, Minggang Wang","doi":"10.25103/jestr.171.17","DOIUrl":"https://doi.org/10.25103/jestr.171.17","url":null,"abstract":"","PeriodicalId":15707,"journal":{"name":"Journal of Engineering Science and Technology Review","volume":"148 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140463643","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}
Due to outstanding mechanical characteristics and corrosion resistance, gas metal arc weld (GMAW) hardfacing is popular in both industry and research domains and also contributes to extending the life of machine components in the manufacturing sector. It is described as a method for creating a thick coating on structural materials with relatively poor qualities and a low cost, referred to as substrate materials, to get the required surface attributes by utilising welding procedures. The weld hardfacing assists in two crucial ways in the improvement of material characteristics: first, it improves features of the material that depend on the surface, such as corrosion and wear resistance. Second, characteristics like toughness, durability, and others that rely on the mass. Numerous sectors, including chemical, mining, power plants, and many more, may benefit from it. This article reviews several studies that have been done so far on various substrates to improve the microstructure, prevent corrosion, and improve mechanical characteristics in the context of gas metal arc weld hardfacing. The findings of this work will be helpful to current and future researchers as well as to other industries utilising weld hardfacing techniques.
{"title":"An Overview on Enhancing Materials’ Tribological and Mechanical Characteristics by Using Gas Metal Arc Weld Hardfacing","authors":"Rajeev Ranjan","doi":"10.25103/jestr.171.08","DOIUrl":"https://doi.org/10.25103/jestr.171.08","url":null,"abstract":"Due to outstanding mechanical characteristics and corrosion resistance, gas metal arc weld (GMAW) hardfacing is popular in both industry and research domains and also contributes to extending the life of machine components in the manufacturing sector. It is described as a method for creating a thick coating on structural materials with relatively poor qualities and a low cost, referred to as substrate materials, to get the required surface attributes by utilising welding procedures. The weld hardfacing assists in two crucial ways in the improvement of material characteristics: first, it improves features of the material that depend on the surface, such as corrosion and wear resistance. Second, characteristics like toughness, durability, and others that rely on the mass. Numerous sectors, including chemical, mining, power plants, and many more, may benefit from it. This article reviews several studies that have been done so far on various substrates to improve the microstructure, prevent corrosion, and improve mechanical characteristics in the context of gas metal arc weld hardfacing. The findings of this work will be helpful to current and future researchers as well as to other industries utilising weld hardfacing techniques.","PeriodicalId":15707,"journal":{"name":"Journal of Engineering Science and Technology Review","volume":"131 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140462815","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}
Jiuqun Mao, Xinliang Liu, Tao Yan, Peng Duan, Wusi Chen
In recent years, double-wall steel boxed cofferdams with bottom structures have been applied in the construction of deep-water caps for bridges. However, their mechanical properties are affected by many factors. To elucidate the mechanics influencing such double-wall steel boxed cofferdam configurations, an analytical and computational model was proposed. Through the three-dimensional finite element software midas civil, calculations and analyses were executed on a steel boxed cofferdam design example from the 10# pier pile foundation of the Xinjiang Kalasuke Reservoir’s extra-large bridge and its platform construction. The alterations in mechanical states triggered by adjustments to the influential parameters, such as wall plate thickness, water injection height between double walls, and support rod spacing within the double walls of the steel boxed cofferdam, were discussed. Results show that, the optimal wall thickness for this cofferdam variant is between 5 and 6 mm, the controllable water injection height ranges from 3.4 m to 4.5 m, and consistently low-stress states occur across the bottom skeleton, secondary beam, and bottom plate throughout the construction process. The spacing between double-wall horizontal components greatly influences the stress and deformation of the inner and outer wall plates. The obtained conclusions provide a significantly reference value for the design theory and practical application of double-wall steel boxed cofferdam structures
{"title":"Analysis of the Mechanical Behaviour of Double-wall Steel Boxed Cofferdam Structures","authors":"Jiuqun Mao, Xinliang Liu, Tao Yan, Peng Duan, Wusi Chen","doi":"10.25103/jestr.171.23","DOIUrl":"https://doi.org/10.25103/jestr.171.23","url":null,"abstract":"In recent years, double-wall steel boxed cofferdams with bottom structures have been applied in the construction of deep-water caps for bridges. However, their mechanical properties are affected by many factors. To elucidate the mechanics influencing such double-wall steel boxed cofferdam configurations, an analytical and computational model was proposed. Through the three-dimensional finite element software midas civil, calculations and analyses were executed on a steel boxed cofferdam design example from the 10# pier pile foundation of the Xinjiang Kalasuke Reservoir’s extra-large bridge and its platform construction. The alterations in mechanical states triggered by adjustments to the influential parameters, such as wall plate thickness, water injection height between double walls, and support rod spacing within the double walls of the steel boxed cofferdam, were discussed. Results show that, the optimal wall thickness for this cofferdam variant is between 5 and 6 mm, the controllable water injection height ranges from 3.4 m to 4.5 m, and consistently low-stress states occur across the bottom skeleton, secondary beam, and bottom plate throughout the construction process. The spacing between double-wall horizontal components greatly influences the stress and deformation of the inner and outer wall plates. The obtained conclusions provide a significantly reference value for the design theory and practical application of double-wall steel boxed cofferdam structures","PeriodicalId":15707,"journal":{"name":"Journal of Engineering Science and Technology Review","volume":"37 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140464072","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}
Mahlon Kida Marvin, Zakiyyu Muhammad Sarkinbaka, A. Abubakar
{"title":"http://jestr.org/index.php?option=com_content&view=article&id=94&Itemid=141","authors":"Mahlon Kida Marvin, Zakiyyu Muhammad Sarkinbaka, A. Abubakar","doi":"10.25103/jestr.171.01","DOIUrl":"https://doi.org/10.25103/jestr.171.01","url":null,"abstract":"","PeriodicalId":15707,"journal":{"name":"Journal of Engineering Science and Technology Review","volume":"208 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140466612","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":"Language Identification and Transliteration approaches for Code-Mixed Text","authors":"Madhuri Kumbhar, Kalpana Thakre","doi":"10.25103/jestr.171.09","DOIUrl":"https://doi.org/10.25103/jestr.171.09","url":null,"abstract":"","PeriodicalId":15707,"journal":{"name":"Journal of Engineering Science and Technology Review","volume":"1218 40","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140466879","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":"Design and Testing of the Main Structure of a Deep Application Machine for Powder Organic Fertilizers","authors":"Zhijun Wu, Fengliang Qi","doi":"10.25103/jestr.171.12","DOIUrl":"https://doi.org/10.25103/jestr.171.12","url":null,"abstract":"","PeriodicalId":15707,"journal":{"name":"Journal of Engineering Science and Technology Review","volume":"1574 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140466477","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}
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