January 2024最新文献

Seismic Stability of Tunnels in Multiple Silty Soils: Plastic Deformation 多淤泥质土中隧道的抗震稳定性：塑性变形

January 2024 Pub Date : 2024-03-01 DOI: 10.36937/cebel.2024.1896

Mohammed Kusay Ebrahım Al-Dulayme

{"title":"Seismic Stability of Tunnels in Multiple Silty Soils: Plastic Deformation","authors":"Mohammed Kusay Ebrahım Al-Dulayme","doi":"10.36937/cebel.2024.1896","DOIUrl":"https://doi.org/10.36937/cebel.2024.1896","url":null,"abstract":"The escalating demand for efficient transportation infrastructure necessitates the construction of numerous tunnels, particularly in densely populated areas. However, their response to dynamic loads, like earthquakes, remains a critical concern. This study utilizes numerical modeling to assess the dynamic behavior of tunnels embedded in various silty soil types under seismic excitation. Employing Abaqus software and the finite element method, tunnels were modeled within three distinct silty soils: silty stone, silty sand, and low plasticity silty clay. Ground motion data from the 1994 Northridge earthquake was used as input to evaluate tunnel displacements. The results demonstrated significant variations in tunnel behavior based on the surrounding soil. Notably, low plasticity silty clay exhibited the largest displacements, followed by silty sand and silty stone. This emphasizes the crucial influence of soil properties on tunnel stability during seismic events. Future investigations could expand upon this work by incorporating additional soil parameters and utilizing more intricate soil models to yield even more precise predictions of tunnel response under dynamic loading conditions.","PeriodicalId":516622,"journal":{"name":"January 2024","volume":"99 12","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140405717","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

Investigation of the Mechanical and Physical Properties of Structural Lightweight Concrete Produced with Expanded Clay Aggregate from Söğüt Region 使用索居特地区膨胀粘土骨料生产的轻质结构混凝土的机械和物理特性研究

January 2024 Pub Date : 2024-03-01 DOI: 10.36937/cebel.2024.1901

İsmail Yildiz

{"title":"Investigation of the Mechanical and Physical Properties of Structural Lightweight Concrete Produced with Expanded Clay Aggregate from Söğüt Region","authors":"İsmail Yildiz","doi":"10.36937/cebel.2024.1901","DOIUrl":"https://doi.org/10.36937/cebel.2024.1901","url":null,"abstract":"The use of mild materials shows an increasing tendency in industrial areas. These materials are also preferred to reduce the unit weight of the building elements in the construction sector. Various light aggregates are used to produce light concrete with a lower density than normal concrete, and the properties of these light aggregates significantly affect the properties of the concrete. In this study, the use of expanded clay aggregate (ECA) produced in the Söğüt region in structural lightweight concrete was examined. Expanded clay, sand, and crushed stone aggregate were used as aggregates in concrete mixtures. The mixture granulometry was kept the same for each group. For this purpose, 60 samples were prepared for a total of 4 mixtures with different contents. Slump and unit volume weight tests were carried out on fresh concrete samples, and compressive, flexural, and splitting tensile strength tests were carried out on 7- and 28-day-hardened concrete samples. Some of the concrete mixture samples were subjected to tests after being kept in the curing pool for 7 days, and some for 28 days. As a result of the experiments, the unit weight and compressive strength values obtained from the samples produced with ECA as coarse and fine aggregate in order to achieve the highest strength target are 1413 kg/m³ and 30 MPa, respectively. The same values were found to be 1652 kg/m³ and 39 MPa in the samples produced with river sand as fine aggregate and ECA as coarse aggregate. In the samples produced using ECA as fine aggregate and crushed stone aggregate as coarse aggregate, these values were also found to be 1689 kg/m³ and 50 MPa.","PeriodicalId":516622,"journal":{"name":"January 2024","volume":"275 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140402383","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

Descriptive epidemiological study assessing emergency department presentations associated with the Hawkesbury-Nepean flood plain 描述性流行病学研究：评估与霍克斯伯里-尼皮恩洪泛平原有关的急诊室就诊情况

January 2024 Pub Date : 2024-01-31 DOI: 10.47389/39.1.23

Sam Daneshjoo, George Truman, Victor Carey

引用次数: 0

Improving the response to disasters by enhancing the incident command system 通过加强事故指挥系统改进救灾工作

January 2024 Pub Date : 2024-01-31 DOI: 10.47389/39.1.08

Karen Bradley-Smith, Vivienne Tippett, FitzGerald Gerald

{"title":"Improving the response to disasters by enhancing the incident command system","authors":"Karen Bradley-Smith, Vivienne Tippett, FitzGerald Gerald","doi":"10.47389/39.1.08","DOIUrl":"https://doi.org/10.47389/39.1.08","url":null,"abstract":"Climate change is having a significant effect on disasters worldwide. In response, societies have attempted to mitigate the consequences by developing standardised arrangements, known as incident command systems. Many of these systems have a military heritage using hierarchical command-and-control principles that are authoritative by nature and fit well within bureaucratic organisations. While emergency services agencies have embraced these incident command systems, other agencies have not, thereby making the multi-agency response to disasters challenging. This research investigated current incident command systems to develop an improved framework that includes all agencies and improves the multi-agency response to emergencies and disasters. A multi-modal qualitative research approach was undertaken using a literature review, semi-structured interviews with informants and a policy analysis of recent disaster reviews and inquires. This combined data informed the development of 4 options for improvements to the multi-agency response and consolidated the issues into 5 domains. These domains and options for improvement were presented to a panel of experts at the strategic level of emergency and disaster management by way of a 2-round modified Delphi study. This paper reports on the final phase of the research; the policy analysis and modified Delphi study. The most significant outcome of this research was a new level of understanding of strengths and weakness of the incident command system. This contributed to the development of a new conceptual framework based on modifications to the incident command system principles.","PeriodicalId":516622,"journal":{"name":"January 2024","volume":"46 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140478628","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

Preparing for the expected: cyclone threats 为预期做好准备：气旋威胁

January 2024 Pub Date : 2024-01-31 DOI: 10.47389/39.1.29

Heidi Turner, Fannie Couture

{"title":"Preparing for the expected: cyclone threats","authors":"Heidi Turner, Fannie Couture","doi":"10.47389/39.1.29","DOIUrl":"https://doi.org/10.47389/39.1.29","url":null,"abstract":"The Gold Coast is a bustling region in South East Queensland with a large concentration of people and has dynamic and growing business and tourism activity. The region is subject to thunderstorms and tropical cyclones that can generate damaging winds. The Severe Wind Hazard Assessment for South East Queensland evaluates the risk posed by severe winds and has strategies for managing this risk (Edwards et al. 2022). Results from the most recent assessment showed that older residential houses were the most damaged by severe winds and that this contributed disproportionately to community risk. However, lessons from recent wind damage caused by Tropical Cyclone Seroja in Western Australia in 2021 indicated that modern house designs have important vulnerabilities. These findings are a concern for any exposed coastal area and, in particular, for South East Queensland. This paper presents a suite of scenarios developed to address this vulnerability. Specifically, we describe how emergency and disaster managers can conduct capability analyses with the goal to enhance intelligence and planning capabilities. An example of the City of Gold Coast was used to show how it has leveraged these capabilities to improve emergency risk-based planning and begin a community resilience transformation with effective places of refuge and evacuation centres for the community.","PeriodicalId":516622,"journal":{"name":"January 2024","volume":"189 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140471229","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

Disaster cultures and the Indonesia Tsunami Early Warning System: (mis)alignments revealed by the 2018 non-tectonic tsunami in Labuan 灾害文化与印度尼西亚海啸预警系统：2018 年纳闽岛非构造性海啸所揭示的（错误）排列组合

January 2024 Pub Date : 2024-01-31 DOI: 10.47389/39.1.34

Willy Wicaksono, Isabelle Desportes, Jan Sopaheluwakan

{"title":"Disaster cultures and the Indonesia Tsunami Early Warning System: (mis)alignments revealed by the 2018 non-tectonic tsunami in Labuan","authors":"Willy Wicaksono, Isabelle Desportes, Jan Sopaheluwakan","doi":"10.47389/39.1.34","DOIUrl":"https://doi.org/10.47389/39.1.34","url":null,"abstract":"This study examined the (mis)alignments between multiple disaster cultures, the Indonesia Tsunami Early Warning System (InaTEWS) and local risk profiles as revealed by the 2018 non-tectonic tsunami triggered by the Anak Krakatau Volcanic eruption in Labuan. The research assessed to what extent the tsunami warning system was adapted to local needs and characteristics. Based on qualitative data collection, this study showed that before the 2018 tsunami (and notwithstanding memories of the 1883 Krakatau tsunami) different local groups shared a strikingly homogeneous understanding of tsunamis as exclusively triggered by earthquakes. After the 2018 tsunami, study participants reported increased awareness of different tsunami types and earthquake risks. However, this rarely translated into practical actions and changes at the local level as structural and cultural factors significantly hampered the work of local government and emergency management agencies. This research identified steps to improve alignment, for example by involving community members in warning technology maintenance, tailoring awareness-raising materials to local hazard profiles and connecting awareness-raising with local cultural traditions. However, a reform of the InaTEWS is necessary, including overcoming sectoral silos and incorporating local knowledge and experiences into policymaking. By addressing these (mis)alignments, authorities can better support communities to understand tsunami risks and respond to future event, ultimately enhancing preparedness.","PeriodicalId":516622,"journal":{"name":"January 2024","volume":"113 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140475010","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

Developing an Australian dust early warning system 开发澳大利亚沙尘预警系统

January 2024 Pub Date : 2024-01-31 DOI: 10.47389/39.1.13

Tegan Clark, Craig Strong

引用次数: 0

MANAGEMENT OF ASTHI-MAJJAGATA VATA W.S.R. TO AVASCULAR NECROSIS(AVN) OF B/L FEMORAL HEAD STAGE 4 - A CASE STUDY 股骨头缺血性坏死（AVN）第 4 期（ASTI-MAJAGATA VATA W.S.R.）的治疗 - 病例研究

January 2024 Pub Date : 2024-01-16 DOI: 10.46607/iamj4012012024

Anurag Prajapati, Aarti Nargesh, Rita Singh, Sanjay Srivastava

{"title":"MANAGEMENT OF ASTHI-MAJJAGATA VATA W.S.R. TO AVASCULAR NECROSIS\u0000(AVN) OF B/L FEMORAL HEAD STAGE 4 - A CASE STUDY","authors":"Anurag Prajapati, Aarti Nargesh, Rita Singh, Sanjay Srivastava","doi":"10.46607/iamj4012012024","DOIUrl":"https://doi.org/10.46607/iamj4012012024","url":null,"abstract":"Avascular Necrosis (AVN), or Osteonecrosis, is characterized by bone tissue death due to insufficient blood supply, prevalent in India with a common occurrence in the femoral head. Ayurveda associates AVN with an imbalance in Vata dosha, presenting symptoms aligning with both traditional and modern medical perspectives. Conventional treatments involve anti-inflammatory drugs and hip replacement, though the latter has limitations. Ayurveda approaches include holistic treatments like herbal medicines and Panchakarma, showcasing potential benefits in symptomatic relief. Modern treatment involves anti-inflammatory drugs and, in severe cases, hip re-placement. The presented case is of a 24-year-old, diagnosed case of grade 4 bilateral AVN of the femoral head who was treated with Panchakarma including Manjisthadi Kshara Basti, Patra pind sweda,pizhichil along with a few Oral Ayurvedic preparations, for 30 days, which provided significant symptomatic relief in pain, improved range of motion and gait. Based on the results, it can be said that panchakarma can provide significant relief in signs and symptoms of Asthimajjagat vat (AVN)","PeriodicalId":516622,"journal":{"name":"January 2024","volume":"3 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140506898","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

PHYSIOLOGICAL UNDERSTANDING OF PANCHAKAPHA 从生理学角度理解 Panchakapha

January 2024 Pub Date : 2024-01-15 DOI: 10.46607/iamj2512012024

Shetty Supritha Sundar, K. N. Rajashekhar, A. N

引用次数: 0

UNDERSTANDING THE PROCESS OF BLOOD COAGULATION THROUGH PRAMANA (PANCHAVAYAVA VAKYA) - AN AYURVEDA VIEW 通过 Pramana（panchavayava vakya）了解血液凝固过程--印度医学的观点

January 2024 Pub Date : 2024-01-15 DOI: 10.46607/iamj2712012024

Sushma B N, Vasudev A Chate, Shreevathsa

引用次数: 0