International journal of innovative engineering applications最新文献

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Investigation of Flexural Behavior of Carbon Fiber Beams. 碳纤维梁的挠曲行为研究

International journal of innovative engineering applications Pub Date : 2024-06-07 DOI: 10.46460/ijiea.1460748

M. Albayrak

{"title":"Investigation of Flexural Behavior of Carbon Fiber Beams.","authors":"M. Albayrak","doi":"10.46460/ijiea.1460748","DOIUrl":"https://doi.org/10.46460/ijiea.1460748","url":null,"abstract":"Investigation of Flexural Behavior of Carbon Fiber Beams. \u0000M. ALBAYRAK 1, \u00001 İnönü Üniversitesi, Malatya OSB Meslek Yüksekokulu, Mak. ve Met. Tek. Böl., Malatya, Türkiye \u0000(ORCID: 0000-0002-2913-6652) \u0000 \u0000In this study, beams with hat profiles were produced. For this purpose, carbon fiber woven fabrics were preferred as reinforcement elements. Afterwards, bending test was applied to these composite beams. As a result of the experiments, displacement-force graphs were obtained on the moving cylinder. In the numerical analysis section, Hashin damage criterion was preferred for damage initiation. \"Continuous Damage Mechanics (CDM)\" and \"Material Property Degradation (MPDG)\" methods are defined in the program for damage progression. In the bending test, crushing damage was observed as the dominant damage on the surface of the sample in contact with the moving cylinder under load. Fiber breakage along with fiber tensile damage was observed on the surfaces in contact with the fixed support rollers. It was observed that the experimental results were closer to each other with the MPDG method. The convergence rate of experimental and numerical data was determined as 89.55%.","PeriodicalId":496072,"journal":{"name":"International journal of innovative engineering applications","volume":" 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141374271","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}

引用次数: 0

Reducing Rockfall Hazards in Tunnel Construction: A Case Study Using Root Cause Analysis Methodology 减少隧道施工中的落石危险：使用根源分析方法的案例研究

International journal of innovative engineering applications Pub Date : 2024-04-15 DOI: 10.46460/ijiea.1375469

Okan Özbakir

{"title":"Reducing Rockfall Hazards in Tunnel Construction: A Case Study Using Root Cause Analysis Methodology","authors":"Okan Özbakir","doi":"10.46460/ijiea.1375469","DOIUrl":"https://doi.org/10.46460/ijiea.1375469","url":null,"abstract":"Abstract \u0000 \u0000Assessing the conditions that create a rockfall hazard is a realistic goal in efforts to reduce worker injuries related to rockfall incidents. If tunnel workers can properly assess the risks of rockfall, with appropriate technical and administrative controls, they can better mitigate the risks. To achieve this goal, the Root Cause Analysis (RCA) methodology can be considered as a risk assessment method. An effective risk assessment method should include the ability to observe variable ceiling conditions and assess how much potential they represent for injuring workers. RCA's ability to prioritize the risks associated with changing conditions provides significant benefits to anyone responsible for designing, approving, or installing controls that are reasonably repeatable and stabilize the ceiling or reduce the risk of material falling from the roof. Using the RCA methodology, this study presents a case analysis of the risks and causes of rockfall incidents in a metro construction project. This study explains the use of an RCA methodology that can help improve system-level failures and weaknesses, such as rocks falling from the ceiling of a tunnel. It can be seen that personnel problems, management failures and information systems problems are now replacing technical failures as the focus of most accident analyses.","PeriodicalId":496072,"journal":{"name":"International journal of innovative engineering applications","volume":"3 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140700842","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}

引用次数: 0

Mobile microRNAs (miRNAs) responsive to excess nickel in pumpkin (Cucurbita maxima L.) 南瓜（Cucurbita maxima L.）中对过量镍反应的移动微RNA（miRNAs）

International journal of innovative engineering applications Pub Date : 2024-02-13 DOI: 10.46460/ijiea.1304404

Guzin Tombuloglu

{"title":"Mobile microRNAs (miRNAs) responsive to excess nickel in pumpkin (Cucurbita maxima L.)","authors":"Guzin Tombuloglu","doi":"10.46460/ijiea.1304404","DOIUrl":"https://doi.org/10.46460/ijiea.1304404","url":null,"abstract":"Nickel (Ni) is a toxic heavy metal that inhibits plant growth, development, and reproduction. MicroRNAs (miRNA) travel from cell to cell or organ to carry messages to regulate gene expression. The objective of this study is to find mobile miRNAs that are Ni-responsive and are present in pumpkin (Cucurbita maxima L.) phloem sap. For this purpose, pumpkin seedlings were exposed to Ni (100 μM, NiCl2), and root, shoot, and phloem-sap specimens were collected at 0 (control), 24, and 48 hours of the treatment. The stem-loop RT-qPCR and stem-loop semi-quantitative RT-PCR methods were used to determine the abundance of 14 miRNAs in the phloem sap. Compared to the control, the abundance of miR160, miR167, miR393, miR397, and miR398 are suppressed in Ni-treated seedlings. The reduction was verified by grafting experiments, revealing that miR167 and miR393 are Ni-responsive and move/travel from the leaf-to-root direction. Those phloem-residential miRNAs potentially play a role in the Ni-response mechanism. This study can help to understand the early response mechanism of plants against excess Ni and lead to identifying miRNA-mediated long-distance communication of plants.","PeriodicalId":496072,"journal":{"name":"International journal of innovative engineering applications","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140457744","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}

引用次数: 0