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Analyzing the origins and consequences of dampness in building structures: A case study at mile 50 in the New Juaben Metropolitan Assembly 分析建筑结构潮湿的根源和后果:新朱阿本市议会 50 英里处的案例研究
Pub Date : 2023-11-30 DOI: 10.53022/oarjet.2023.5.2.0078
Oteng Nyarko-Boateng, Franklina Nyadubea, Owusu Darko, Anastasia Akyeamaa Mensah
Dampness is a continuing cause of distress to building occupants. The effects of dampness have become a major problem when it invades into building. It is also a possible source of or a contributor to illness and it encourages deterioration in the fabric of the building. With an emphasis on existing buildings and some coverage of the design of new buildings, the objectives of this research are to investigate the causes of dampness during and after the construction of buildings, identify the effects of dampness on the building and its occupants and offer recommendations on the above mention issues. The level of dampness causes and effects differ across geographic areas, climates, and building types. A descriptive survey technique was used to gather information about rising damp in the municipality which includes questionnaires, interviews, and personal observations. According to the findings, the condition resulting in rising dampness to the base of walls was the lack of incorporation of damp-proof courses during construction. Also, the problem of rising dampness reoccurs shortly after treatment because of the application of the wrong treatment method as well as the absence of damp treatment specialists. The effects of rising dampness led to damage to plaster work, crumbling of masonry, peeling of paintwork, efflorescence on wall surfaces, uncomfortable, unattractive rooms, and the cost of painting a room or building yearly. From the findings, it is recommended that damp proof courses (DPCs) should be placed through the full thickness of the base of walls below floor level to form an impervious layer that keeps rising damp out of the buildings.
潮湿一直是困扰建筑物住户的一个原因。当潮气侵入建筑物时,其影响已成为一个主要问题。潮湿也可能是疾病的来源或诱因,并导致建筑物结构的恶化。本研究以现有建筑为重点,并涉及一些新建筑的设计,其目的是调查建筑施工期间和施工后的潮湿原因,确定潮湿对建筑和居住者的影响,并就上述问题提出建议。潮湿的原因和影响程度因地理区域、气候和建筑类型而异。我们采用了描述性调查技术来收集有关该市潮气上升的信息,包括问卷调查、访谈和个人观察。调查结果显示,导致墙基潮气上升的原因是在施工过程中没有安装防潮层。此外,由于使用了错误的处理方法以及缺乏潮湿处理专家,潮气上升的问题在处理后不久又再次出现。潮气上升的影响导致抹灰工程受损、砖石坍塌、油漆剥落、墙壁表面产生沉积物、房间不舒适、不美观,以及每年粉刷房间或建筑物的费用。根据研究结果,建议在地面以下的墙基全厚铺设防潮层(DPC),以形成一个不透水层,将上升的潮气阻挡在建筑物之外。
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引用次数: 0
Detection of the root cause and implications of building dampness 检测建筑物潮湿的根本原因和影响
Pub Date : 2023-11-30 DOI: 10.53022/oarjet.2023.5.2.0080
Oteng Nyarko-Boateng, Anastasia Akyeamaa Mensah, Franklina Owusu Darko Nyadubea, Foster Addo Yeboah
Building dampness, arising from excessive moisture accumulation within structures, stands as a pervasive concern impacting buildings and their inhabitants globally. This research tried to unravel the root cause of building dampness and understand its far-reaching implications, encompassing structural integrity and health implications. The research collected data from the site and an in-depth analysis was conducted to ascertain the moisture level and structural integrity of buildings in the selected community. The research results and findings indicate that builders mostly do not apply the appropriate building principles nor seek technical supervision in raising structures. The research also sought to contribute to a deeper understanding of this prevalent issue of dampness in building structures and provided effective mitigation strategies to create healthier and sustainable built environments.
建筑潮湿是由结构内过度的湿气积聚引起的,是影响全球建筑物及其居民的一个普遍问题。这项研究试图揭示建筑潮湿的根本原因,并了解其深远影响,包括结构完整性和对健康的影响。研究从现场收集数据,并进行深入分析,以确定选定社区内建筑物的潮湿程度和结构完整性。研究结果和发现表明,建筑商在加高建筑物时大多没有采用适当的建筑原则,也没有寻求技术监督。这项研究还试图帮助人们更深入地了解建筑结构中普遍存在的潮湿问题,并提供有效的缓解策略,以创造更健康和可持续的建筑环境。
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引用次数: 0
Atmospheric dristribution of traffic heavy metals at temu-interchange, Epe Lagos, Nigeria 尼日利亚埃佩拉各斯temu立交交通重金属的大气分布
Pub Date : 2023-10-30 DOI: 10.53022/oarjet.2023.5.2.0079
None Sunday Adekunle Adebanjo, None Maxwell Akindare Akinwunmi, None Damilola Muheeb Omotayo, None Lukuman Adekilekun Jimoda
The Atmospheric distribution of traffic heavy metals is a dynamic process that involves the emission of various pollutants released from vehicular traffic. It has affected both human and plants around Temu-interchange hence, the need to characterized the emissions. The objective of the study was determined concentration of Particulate Matter (PM) and Enrichment Factor (EF) depending on the traffic emission. The research was conducted using deposition method. The study area and the control experiment were conducted simultaneously for a period of thirty (30) days between December 2022-January 2023 (Dry Season). Samples were prepared and deposition fluxes (DF) were determined. The particulates were taken to the Central Research Laboratory, Tanke in Ilorin for characterization using X-ray Fluorescence (XRF) spectrometer. EF was also determined. Thirteen elements Fe, Ag, Cd, Zn, Sn, Ti, In, Co, Mn, Pd, Rh and Ru were characterized from the samples collected at the study area while Twenty-one Si, S, Cl, K, Ca, Ti, V, Cr, Mn, Fe, Ni, Cu, Zn, Ge, As, Zr, Sr, Pb, W, Po and Ac elements were characterized from the samples collected at the control unit of the experiment. The EF of the detected elements both in the study area and in the control, experiment was determined. Five elements in the study area were moderately enriched, while elements such as S, Cl and Zn were highly enriched in the control unit. An indication of anthropogenic activities particularly traffic emission influence within the area hence, a clean-up of the study area is highly recommended.
交通重金属在大气中的分布是一个动态过程,涉及到车辆交通所释放的各种污染物的排放。它已经影响了铁木立交周围的人类和植物,因此,有必要对排放进行表征。研究的目的是确定与交通排放有关的颗粒物(PM)浓度和富集系数(EF)。采用沉积法进行研究。研究区与对照试验于2022年12月至2023年1月(旱季)同步进行,为期30天。制备了样品并测定了沉积通量(DF)。颗粒被带到伊洛林的中央研究实验室,用x射线荧光(XRF)光谱仪进行表征。测定了EF。从研究区收集的样品中对Fe、Ag、Cd、Zn、Sn、Ti、In、Co、Mn、Pd、Rh和Ru等13种元素进行了表征,从实验控制单元收集的样品中对Si、S、Cl、K、Ca、Ti、V、Cr、Mn、Fe、Ni、Cu、Zn、Ge、As、Zr、Sr、Pb、W、Po和Ac等21种元素进行了表征。测定了研究区和对照试验中被检元素的EF。研究区内5种元素为中等富集,而控制区内S、Cl、Zn等元素为高富集。人为活动,特别是交通排放对该地区的影响,因此强烈建议对研究区域进行清理。
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引用次数: 0
Transforming education: Perceptions and challenges of technology-enabled teacher education programmes 转型教育:技术支持的教师教育计划的看法和挑战
Pub Date : 2023-10-30 DOI: 10.53022/oarjet.2023.5.2.0077
None AR Saravanakumar, None G.P. Raja, None P. Sivakumar
The education landscape is undergoing a significant transformation due to technological advancements and shifting pedagogical paradigms. Technology-enabled teacher education programs are embracing digital tools to enhance pedagogy, provide adaptive learning experiences, foster global connectivity, and promote data-driven decision-making. These programs prepare educators for 21st-century classrooms, equipping them with the skills needed for 21st-century classrooms. However, concerns about overreliance on technology persist, emphasizing the importance of striking a balance between digital tools and traditional teaching methods. Unequal access to technology and the digital divide poses significant challenges, necessitating infrastructure development and equitable access initiatives. Ensuring technological literacy among educators and students is crucial, as these programs demand a certain level of digital proficiency. Balancing theory with practice in these programs is essential for their continued success. Understanding learner perceptions and addressing challenges is key in shaping the evolution of teacher education programs that effectively prepare educators for the dynamic demands of modern classrooms. Balancing theory and practice are essential for the success of these programs.
由于技术进步和教学范式的转变,教育格局正在发生重大转变。技术支持的教师教育项目正在采用数字工具来加强教学,提供适应性学习体验,促进全球互联互通,促进数据驱动的决策。这些课程为21世纪课堂的教育工作者做好准备,使他们具备21世纪课堂所需的技能。然而,对过度依赖技术的担忧仍然存在,强调了在数字工具和传统教学方法之间取得平衡的重要性。获取技术的机会不平等和数字鸿沟带来了重大挑战,需要发展基础设施和采取公平获取举措。确保教育工作者和学生的技术素养至关重要,因为这些项目需要一定程度的数字熟练程度。在这些项目中平衡理论与实践对他们的持续成功至关重要。理解学习者的感知和应对挑战是塑造教师教育计划演变的关键,这些计划有效地为教育工作者准备现代课堂的动态需求。平衡理论和实践对这些项目的成功至关重要。
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引用次数: 0
A literature review to determine the availability of materials for application in 3D printing processes within the Brazilian construction industry 一篇文献综述,以确定巴西建筑行业内3D打印过程中应用材料的可用性
Pub Date : 2023-09-30 DOI: 10.53022/oarjet.2023.5.1.0076
None Bruno Moraes Guimarães, None Neander Furtado Silva, None Eleudo Esteves de Araújo Silva Júnior, None Augusto Cesar Oliveira Dias
In the present day, the civil construction industry grapples with various challenges, including low productivity, a shortage of skilled labour, resistance to technological innovations, and significant environmental impacts. Extensive literature underscores the urgency of modernizing the sector by embracing new technologies such as digital prototyping and advanced manufacturing processes. In light of these considerations, this article aims to assess the range of materials available for 3D printing to determine the feasibility of integrating this technology into the Brazilian civil construction industry (BCI). Through a comprehensive analysis of materials currently in use, drawn from scientific research, it becomes evident that mortar-based materials are emerging as a preferred choice for 3D printing components within civil construction. Considering that the Brazilian construction sector already heavily relies on cement as its primary material for constructing the built environment, a promising landscape unfolds for the gradual adoption and integration of three-dimensional printing technology into the industry. This alignment with existing practices and materials positions the BCI favourably for embracing the potential of 3D printing.
目前,民用建筑行业面临着各种挑战,包括生产率低、熟练劳动力短缺、技术创新阻力和重大环境影响。大量文献强调了通过采用数字原型和先进制造工艺等新技术使该部门现代化的紧迫性。鉴于这些考虑因素,本文旨在评估可用于3D打印的材料范围,以确定将该技术整合到巴西民用建筑行业(BCI)的可行性。通过对目前使用的材料进行综合分析,并从科学研究中得出结论,砂浆基材料正在成为民用建筑中3D打印部件的首选。考虑到巴西建筑业已经严重依赖水泥作为其构建建筑环境的主要材料,三维打印技术逐渐被采用并融入该行业,前景广阔。这种与现有实践和材料的对齐有利于BCI拥抱3D打印的潜力。
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引用次数: 0
Development of groundwater pollution removal technology 地下水污染去除技术的发展
Pub Date : 2023-09-30 DOI: 10.53022/oarjet.2023.5.1.0074
None GARBA HARUNA, None DAUDA MAILAFIYA JERA
A trial treatment plant model was constructed and the performance of the model was found to be effective as an effective technique for removing iron and other contaminants from groundwater. With an effective size of 0.45 mm, a uniformity factor of 1.5 and a porosity of 0.6, the filter material was able to filter water with a high iron content and other parameters. The backwash speed of the sand filter is 1.44 m/s (86.4 m/h). At this speed, the pressure was sufficient to cause the media to expand and boil, so that the iron sludge, flakes and other dirt remained in the filter. Nine (9) daily inflows and outflows at depths of 60 cm, 70 cm and 80 cm were determined. An iron removal efficiency of 99.1% was achieved at a depth of 60 cm and 90.63% at a depth of 80 cm. Similarly, the model was able to remove physical and organoleptic parameters (color, turbidity, fluorine, manganese, nitrite, Ph, zinc, E-coli and total coliforms). The technology developed in this research can be used as an alternative, simple and cost-effective way to remove iron and other contaminants from groundwater.
建立了一个试验处理厂模型,发现该模型的性能是一种有效的技术,可以去除地下水中的铁和其他污染物。该滤料的有效粒径为0.45 mm,均匀系数为1.5,孔隙率为0.6,能够过滤含铁量高的水等参数。砂滤反洗速度为1.44 m/s (86.4 m/h)。在这种速度下,压力足以使介质膨胀和沸腾,因此铁泥,薄片和其他污垢留在过滤器中。在深度为60cm、70cm和80cm处测定了9(9)次每日流入和流出。除铁效率在深度为60 cm时为99.1%,在深度为80 cm时为90.63%。同样,该模型能够去除物理和感官参数(颜色、浊度、氟、锰、亚硝酸盐、Ph、锌、大肠杆菌和总大肠菌群)。这项研究中开发的技术可以作为一种简单而经济的替代方法,从地下水中去除铁和其他污染物。
{"title":"Development of groundwater pollution removal technology","authors":"None GARBA HARUNA, None DAUDA MAILAFIYA JERA","doi":"10.53022/oarjet.2023.5.1.0074","DOIUrl":"https://doi.org/10.53022/oarjet.2023.5.1.0074","url":null,"abstract":"A trial treatment plant model was constructed and the performance of the model was found to be effective as an effective technique for removing iron and other contaminants from groundwater. With an effective size of 0.45 mm, a uniformity factor of 1.5 and a porosity of 0.6, the filter material was able to filter water with a high iron content and other parameters. The backwash speed of the sand filter is 1.44 m/s (86.4 m/h). At this speed, the pressure was sufficient to cause the media to expand and boil, so that the iron sludge, flakes and other dirt remained in the filter. Nine (9) daily inflows and outflows at depths of 60 cm, 70 cm and 80 cm were determined. An iron removal efficiency of 99.1% was achieved at a depth of 60 cm and 90.63% at a depth of 80 cm. Similarly, the model was able to remove physical and organoleptic parameters (color, turbidity, fluorine, manganese, nitrite, Ph, zinc, E-coli and total coliforms). The technology developed in this research can be used as an alternative, simple and cost-effective way to remove iron and other contaminants from groundwater.","PeriodicalId":125730,"journal":{"name":"Open Access Research Journal of Engineering and Technology","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136277272","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
Blockchain technology in education: The perspective, challenges, and concerns 区块链技术在教育中的应用:前景、挑战和关注
Pub Date : 2023-09-30 DOI: 10.53022/oarjet.2023.5.1.0075
None Bhavna Galhotra, None Devesh Lowe, None Sunny Seth
Blockchain technology has altered the way transactions are conducted since its introduction. It offers a risk-free and secure way to exchange digital currency that is impervious to manipulation by those with bad intentions. In blocks that store the data, it stores all transactional data. The best example of decentralized, systematic data collection is blockchain technology. By storing the block in many locations across a distributed network arrangement, it offers a public ledger system that combines public key encryption of all transactions to solve the double spending problem, making change impossible and therefore more secure. This article explores the usefulness and benefits of Blockchain technology compared to traditional data management by outlining its fundamental concepts and how it has been adopted in different industries. The writers also discuss the factors that led to the adoption of Bitcoin and other cryptocurrencies as well as the shift to a decentralized crypto ledger. In-depth information on this technology's potential hazards, drawbacks, security features, threats, and vulnerabilities is also included in the article.
区块链技术自推出以来已经改变了交易的方式。它提供了一种无风险和安全的方式来交换数字货币,不受恶意操纵的影响。在存储数据的块中,它存储所有事务性数据。去中心化、系统化数据收集的最好例子是区块链技术。通过将区块存储在分布式网络安排中的许多位置,它提供了一个公共分类账系统,该系统结合了所有交易的公钥加密,以解决双重支出问题,使更改变得不可能,因此更安全。本文通过概述区块链技术的基本概念以及它如何在不同行业中被采用,探讨了区块链技术与传统数据管理相比的有用性和好处。作者还讨论了导致比特币和其他加密货币被采用的因素,以及向分散的加密分类账的转变。本文还包括有关该技术的潜在危险、缺点、安全特性、威胁和漏洞的深入信息。
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引用次数: 0
Development and validation of simple, precise UV spectrophotometric methods for the quantification of Mebeverine HCl in API and Marketed Products 原料药和市售产品中盐酸美贝弗林简便、精确的紫外分光光度定量方法的建立与验证
Pub Date : 2023-08-30 DOI: 10.53022/oarjet.2023.5.1.0071
Anusha Gaddameedi, Anand Kumar Yegnoor
Simple, rapid, economic and sensitive UV spectrophotometric methods using three solvent mediums viz., 0.1N HCl, Phosphate buffer pH 6.8 and Phosphate buffer pH 7.4 were developed and validated for the estimation of Mebeverine HCl in active pharmaceutical form, Marketed tablets and capsules. The developed methods were validated in terms of linearity, accuracy, precision, and specificity, limit of detection and limit of quantification as per ICH guidelines. The purity of Mebeverine HCl was characterized by melting point and FTIR. At determined absorption maxima of 263 nm for all solvents proved to be linear in the range of 1-50 µg/ml and exhibited good correlation coefficient (R2 = 0.9999, 0.9992, 0.9999) and recovery of (99.00 – 104.55%). This method is applied for two marketed Mebeverine HCl brands and results were in good agreement with label claim. The methods were validated statistically and by recovery studies for linearity, precision, repeatability, and reproducibility. The obtained results proved that the method can be employed for the routine analysis of Mebeverine HCl in active pharmaceutical form as well as in the commercial marketed formulations viz., tablets and capsules.
采用0.1N HCl、磷酸缓冲液pH 6.8和磷酸缓冲液pH 7.4三种溶剂介质,建立了简便、快速、经济、灵敏的紫外分光光度法测定盐酸美贝弗林原料药、市上市片剂和胶囊的含量。根据ICH指南对所开发的方法进行了线性、准确性、精密度和特异性、检出限和定量限的验证。用熔点和红外光谱对盐酸美贝弗林的纯度进行了表征。在263 nm的最大吸光度范围内,各溶剂均呈良好的线性关系(R2 = 0.9999, 0.9992, 0.9999),回收率为(99.00 ~ 104.55%)。该方法应用于两种已上市盐酸美贝弗林品牌,结果与标签上的声明一致。方法的线性度、精密度、重复性和再现性经统计学和回收率研究验证。结果表明,该方法既可用于盐酸美贝弗林活性制剂的常规分析,也可用于盐酸美贝弗林片剂和胶囊的常规分析。
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引用次数: 0
Assessment of some economic factors affecting inflation in Sudan: An econometric study 对影响苏丹通货膨胀的一些经济因素的评估:一项计量经济学研究
Pub Date : 2023-08-30 DOI: 10.53022/oarjet.2023.5.1.0066
A. Musa, Attahir Musa
The paper aimed to Assessment of Some Economic Factors Affecting Inflation in Sudan; an econometric study (1996-2021). The study focused on the exchange rate (EX), the unemployment rate (UR), and the money supply (MS). The study is based on the following main hypotheses: There is a positive effect between the inflation rate (INF), the exchange rate (EX), and the money supply (MS), and that there is a negative effect between (INF) and (UR). The study revealed the following conclusions: The devaluation of the currency exchange rate leads to an increase in the inflation rate, but the increase in the unemployment rate leads to a decrease in the inflation rate in Sudan. The study recommended that the state adopt an effective fiscal and monetary policy to reduce the rate of inflation in order to increase the employment rate and improve the level of the country's national product.
本文旨在评估影响苏丹通货膨胀的一些经济因素;计量经济学研究(1996-2021)。研究的重点是汇率(EX)、失业率(UR)和货币供应量(MS)。本研究基于以下主要假设:通货膨胀率(INF)、汇率(EX)和货币供应量(MS)之间存在正影响,(INF)和货币供应量(UR)之间存在负影响。研究得出以下结论:货币汇率的贬值导致通货膨胀率的上升,但失业率的上升导致苏丹通货膨胀率的下降。该研究建议国家采取有效的财政和货币政策来降低通货膨胀率,以增加就业率和提高国家的国民生产总值水平。
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引用次数: 0
Spatial distribution of air quality in Netrokona district town, Bangladesh 孟加拉国Netrokona区城镇空气质量的空间分布
Pub Date : 2023-07-30 DOI: 10.53022/oarjet.2023.5.1.0065
Ahmad Kamruzzaman Majumde r, S. M. Alamgir Hossain, Md Nasir Ahmmed Patoary, Marziat Rahman
Air pollution is one of the significant environmental concerning issues in Bangladesh. It has been getting worse at a district level over the past few decades. The main objective of this study was to observe the concentration of Particulate Matter (PM) in Netrokona district town depending on the different uses of land represents. This research was carried out with the assistance of a portable Air Quality Monitor in a total of sixty different places throughout the Netrokona district town. It was revealed that, on average, locations in the district town of Netrokona had particulate matter concentrations (60.97, 99.63, 130.12 µg/m3) respectively. Moreover, averaged PM₂.₅ was 1.53 times fold than Bangladesh's National Ambient Air Quality Standards (NAAQS) level. On the basis of PM₂.₅ concentration, the study demonstrated that three of the most polluted places were located in commercial areas, whereas two of the least polluted places were in sensitive areas. According to estimates, the ratio of PM₂.₅/PM₁₀ was found 76.76%, while the ratio of PM₁/ PM₂.₅ was 61.17%. This research ranks land uses by average PM₂.₅ concentration: mixed area> commercial area> road intersection area> residential area> village area> industrial area> sensitive area.
空气污染是孟加拉国重大的环境问题之一。在过去的几十年里,地区层面的情况越来越糟。本研究的主要目的是观察Netrokona区城镇的颗粒物(PM)浓度,这取决于土地的不同用途。这项研究是在便携式空气质量监测仪的帮助下,在整个Netrokona区的60个不同地方进行的。结果显示,平均而言,Netrokona区镇的颗粒物浓度分别为60.97、99.63和130.12µg/m3。此外,平均PM₂。₅是孟加拉国国家环境空气质量标准(NAAQS)水平的1.53倍。以PM₂为基础。₅浓度,研究表明,污染最严重的三个地方位于商业区,而污染最轻的两个地方位于敏感地区。根据估算,PM₂的比值。₅/PM₁₀为76.76%,而PM₁/ PM₂的比例为76.76%。₅为61.17%。该研究以平均PM₂为标准对土地利用进行了排名。₅浓度:混合区>商业区>道路交叉口>住宅区>村庄>工业区>敏感区
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引用次数: 0
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Open Access Research Journal of Engineering and Technology
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