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Review of the Nigerian Power Sector 尼日利亚电力部门回顾
Pub Date : 2024-08-10 DOI: 10.9734/jenrr/2024/v16i8366
Arinze Okoye
A constant power supply is a key indicator of a developed economy. Any nation with unreliable energy supply hampers its development and risks losing potential investors. Nigeria, a country with over 160 million people, has experienced frequent and persistent power outages over the past 33 years since the establishment of the National Electric Power Authority (NEPA), the agency responsible for electricity generation, transmission, and distribution. Currently, the federal government is implementing power sector reforms aimed at improving this unfavorable situation and reducing the monopoly control over the country's power industry. This paper examines the overall power sector and its reforms, evaluates the opportunities and challenges, and advocates for the introduction and effective management of National Integrated Power Projects (NIPPs) and Independent Power Producers (IPPs) as positive steps forward.
稳定的电力供应是发达经济的一个关键指标。任何一个能源供应不可靠的国家都会阻碍其发展,并面临失去潜在投资者的风险。尼日利亚是一个拥有超过 1.6 亿人口的国家,自负责发电、输电和配电的国家电力局(NEPA)成立以来的 33 年里,该国经历了频繁而持续的停电。目前,联邦政府正在实施电力部门改革,旨在改善这种不利局面,减少对国家电力行业的垄断控制。本文对整个电力部门及其改革进行了研究,评估了机遇和挑战,并主张引入国家综合电力项目 (NIPP) 和独立电力生产商 (IPP) 并对其进行有效管理,以此作为积极的前进步骤。
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引用次数: 1
The State-of-the-Art Review on Wind and Photovoltaic Solar Hybrid Renewable Energy and Its Impending Potential in Eastern and Southern Africa 风能和光伏太阳能混合可再生能源及其在东部和南部非洲的未来潜力现状综述
Pub Date : 2024-08-08 DOI: 10.9734/jenrr/2024/v16i8365
M. Chambalile, B. Su, F. Illo
Hybrid renewable energy, combining wind and solar sources, is crucial globally, notably in Africa, addressing electricity shortages and complementing each other's performance. However, both sources are intermittent, challenging grids without sufficient storage capacity. Many countries invest in these systems for sustainable electricity, especially in rural Africa. This paper reviews Photovoltaic solar and wind hybrid systems, analysing integration, opportunities, and technologies for enhanced energy output. It examines design, technologies, and policies from the last decade, with case studies from Kenya, South Africa, and China, and forecasts developments in Southern and Eastern Africa.
风能和太阳能相结合的混合可再生能源在全球,尤其是非洲,对解决电力短缺和互补性能至关重要。然而,这两种能源都是间歇性的,对没有足够储存能力的电网构成挑战。许多国家,尤其是非洲农村地区,都投资于这些系统,以实现可持续电力供应。本文回顾了光伏太阳能和风能混合系统,分析了整合、机遇和提高能源产出的技术。它研究了过去十年的设计、技术和政策,包括肯尼亚、南非和中国的案例研究,并预测了南部和东部非洲的发展。
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引用次数: 0
Technical and Enviro-economic Analysis of a 0.78 kWp PV System 0.78 kWp 光伏系统的技术和环境经济分析
Pub Date : 2024-05-10 DOI: 10.9734/jenrr/2024/v16i6353
Wilkins K. Cheruiyot, Eliaz K. Komen, J. Tonui, Richard A. Kinyamal
Aim: To determine the technical, economic and environmental performance analysis of an installed PV backup system.Study Design: To attain this goal, analysis were performed using a freely available PVSyst 6.7.0 software tool. Economic evaluation was performed using respective present worth of individual component prices. Environmental performance comparison is made between the PV system and diesel generator when each is used as an independent backup system. Input in-situ measured data were determined, measured and keyed into the tool.Place and Duration of Study: The system is installed in an institutional building in a tropical climatic zone with coordinates 0.42 N and 35.03 E. The system was studied for a period of one year where data was collected and recorded for techno-enviroeconomic analysis.Methodology: The system consists of four PV modules rated at 0.78 KWp, charge controller and an inverter unit and battery bank, and is utilized as a power backup system to supply electricity whenever power failure occurs, which is frequent and real in Kenya. The techno-enviroeconomic performances analysis of the system were evaluated using the PVSyst software, a freely available design and analytical tool, where input data were measured and recorded at the site.Results: The performance analysis of the system showed that PV array efficiency of 13.24%, FF of 0.68, CF of 21.23%, and PR of 73.63% and generated electrical energy of 1092 kWh/year. The LCOE of PV electricity was 0.059 $/kWh, while total saving of CO2 emission in tons of CO2 was 9.0 tCO2 with LCE value of 331 gCO2/ kWh.Conclusion: Techno- enviroeconomic performance results of the studied PV system show that the system can contribute significantly to the mitigation of CO2 emission. This work also could be helpful for consumers and policy makers in the choice of renewable based or fossil based backup generation systems.
研究设计:为实现这一目标,使用免费提供的 PVSyst 6.7.0 软件工具进行分析。经济评价采用单个组件价格的现值进行。当光伏系统和柴油发电机各自用作独立的备用系统时,对两者的环境性能进行比较。输入的现场测量数据已确定、测量并输入工具:系统安装在坐标为 0.42 N 和 35.03 E 的热带气候区的一栋机构大楼内。系统研究为期一年,收集并记录数据,用于技术-环境-经济分析:该系统由四个额定功率为 0.78 KWp 的光伏组件、充电控制器、逆变器装置和电池组组成,用作备用电源系统,在肯尼亚经常发生停电时供电。使用 PVSyst 软件(一种免费提供的设计和分析工具)对该系统的技术-环境-经济性能进行了评估,输入数据在现场进行了测量和记录:该系统的性能分析表明,光伏阵列效率为 13.24%,FF 为 0.68,CF 为 21.23%,PR 为 73.63%,年发电量为 1092 千瓦时。光伏发电的 LCOE 为 0.059 美元/千瓦时,以吨为单位的 CO2 减排总量为 9.0 吨 CO2,LCE 值为 331 克 CO2/千瓦时:结论:所研究的光伏系统的技术-环境-经济性能结果表明,该系统能显著减少二氧化碳排放。这项研究还有助于消费者和政策制定者选择可再生或化石燃料备用发电系统。
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引用次数: 0
Effect of Natural Dye Extracts on the Absorbance Characteristics of TiO2 in Dye-Sensitized Solar Cells 天然染料提取物对染料敏化太阳能电池中 TiO2 吸收特性的影响
Pub Date : 2024-05-08 DOI: 10.9734/jenrr/2024/v16i5352
Tarila Amakoromo, P.S. Cookey, T. T. Awuhe
Natural dye extracts from Chinese Ixora (Ixora chinensis) flower, Cassod flower (Cassia Siamea), Cassava leaf (Manihot Esculenta), purple heart (Tradescantia Pallida) and Copper leaf (Acalypha Wilkesiana) have been explored as sensitizers for the fabrication of dye-sensitized solar cells. The properties of the dyes were investigated using the FTIR and they all showed broad absorption bands in the 3800 to 3000cm-1 wavelenght and strong presence of intermolecular H-bonds. The effect of dye extracts on the absorbance and transmittance features of TiO2 was well studied by the UV-VIS and the absorbance peak was in the case of sensitization with Manihot Esculenta seen to radically improve above 1.0 at 350nm wavelength. Finally, the current and voltage characteristics of the DSSC were studied in sunlight and at a peak sunlight intensity of 601m/w2, the Manihot and Cassod sensitized devices exhibited maximum voltage values of 115 and 84mV respectively and maximum current values of 4.32 and 2.99mA. These plants have shown great potential for application in fabrication of cost effective and environmentally friendly DSSCs.
研究人员从鸢尾花(Ixora chinensis)、决明子花(Cassod flower)、木薯叶(Manihot Esculenta)、紫心(Tradescantia Pallida)和铜叶(Acalypha Wilkesiana)中提取天然染料,作为制造染料敏化太阳能电池的敏化剂。利用傅立叶变换红外光谱研究了这些染料的特性,它们都在 3800 至 3000cm-1 波长范围内显示出宽阔的吸收带,并存在较强的分子间 H 键。紫外-可见分光光度法很好地研究了染料萃取物对二氧化钛吸光度和透射率特征的影响,在 350 纳米波长处,用 Manihot Esculenta 进行敏化时,吸光度峰值从根本上提高到 1.0 以上。最后,在太阳光下研究了 DSSC 的电流和电压特性,在峰值太阳光强度为 601m/w2 时,Manihot 和 Cassod 感光器件的最大电压值分别为 115mV 和 84mV,最大电流值分别为 4.32mA 和 2.99mA。这些植物在应用于制造具有成本效益和环境友好型 DSSC 方面显示出巨大的潜力。
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引用次数: 0
Applications of Fractional Time Delayed Grey Model in Primary Energy Consumption Prediction 分时延迟灰色模型在一次能源消耗量预测中的应用
Pub Date : 2024-05-01 DOI: 10.9734/jenrr/2024/v16i5351
Qingping He, Yiwu Hao
The prediction of total energy consumption is crucial across various domains including the economy, environment, market, and geopolitics. Accurate forecasts can guide policy-making, investment decisions, and international strategies, contributing to sustainable development and energy security. Fractional models have been proven to better capture the long-term memory effects and complex dynamic characteristics of systems, with time delay playing a crucial role in capturing dynamic behaviors. Such models enhance the accuracy and reliability of predicting future trends and behaviors. For the prediction of primary energy consumption in South and Central America, the Middle East, and Africa, this study opts for the existing fractional time delayed grey model, optimizing the fractional order using the particle swarm optimization algorithm. Experimental results demonstrate that in most cases, the predictive capability of the fractional time delayed grey model surpasses that of other grey models. This indicates the effectiveness and reliability of the model in forecasting energy consumption, providing valuable references and foundations for decision-making in relevant fields.
对能源消耗总量的预测在经济、环境、市场和地缘政治等各个领域都至关重要。准确的预测可以指导政策制定、投资决策和国际战略,促进可持续发展和能源安全。事实证明,分数模型能更好地捕捉系统的长期记忆效应和复杂动态特性,而时间延迟在捕捉动态行为方面发挥着至关重要的作用。这类模型提高了预测未来趋势和行为的准确性和可靠性。为了预测中南美洲、中东和非洲的一次能源消耗量,本研究选择了现有的分数时延灰色模型,并使用粒子群优化算法对分数阶数进行了优化。实验结果表明,在大多数情况下,分时延迟灰色模型的预测能力超过了其他灰色模型。这表明该模型在预测能源消耗方面的有效性和可靠性,为相关领域的决策提供了有价值的参考和依据。
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引用次数: 0
Crude Oil and Refined Products Spill Incidence Impact Evaluation in Eleme; Rivers State, Nigeria 尼日利亚河流州埃莱梅原油和精炼产品泄漏事件影响评估
Pub Date : 2024-04-25 DOI: 10.9734/jenrr/2024/v16i4346
Olukaejire Sj, Ifiora Cc, Osaro Pa, Osuji Lc, Hart Ai
This study aimed to assess crude oil and refined products spill incidence and perceived impact on livelihood of inhabitants in Eleme, Rivers State, Nigeria.  The research adopted questionnaire, interview and survey methodology. The population of the study is 4648 being the total persons living around and about crisscross of pipelines and facilities, size of 368 selected at random from the study sites. The primary data, questionnaires and oral interview were major instruments deployed and used for data collection and simple percentages were used in analyzing the data collected from the questionnaire. The major cause of spill was identified as pipeline sabotage, followed closely by pipeline rupture. Preponderance of the respondents strongly agreed that the magnitude of crude oil and refined products spill had impacted negatively on livelihood of inhabitants, that there are consequences associated with crude oil and refined product spill on soil and water in the study area, that there are mitigation and measures of curtailing crude oil and refined products spill in the study area, and that crude oil and refined product spill have a significant effect on the study area. Prevention should be adopted as a risk management strategy in addressing soil and water pollution in Eleme, arising from Crude oil spill.
本研究旨在评估尼日利亚河流州 Eleme 的原油和成品油泄漏事件及其对居民生活的影响。 研究采用了问卷、访谈和调查方法。研究人口为 4648 人,即居住在管道和设施纵横交错处周围的总人口,从研究地点随机抽取了 368 人。主要数据、调查问卷和口头访谈是收集数据的主要工具,在分析从调查问卷中收集到的数据时使用了简单的百分比。泄漏的主要原因是管道破坏,其次是管道破裂。绝大多数受访者强烈同意原油和成品油泄漏的严重程度对居民的生活造成了负面影响,原油和成品油泄漏对研究地区的土壤和水造成了相关后果,研究地区有缓解和遏制原油和成品油泄漏的措施,原油和成品油泄漏对研究地区有重大影响。在解决原油泄漏造成的埃莱梅土壤和水污染问题时,应将预防作为一种风险管理战略。
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引用次数: 0
Comparative Analysis of Current-Voltage Characteristics of Photovoltaic (PV) Systems in Selected Climatic Regions in Cross River State, Nigeria 尼日利亚克罗斯河州部分气候区光伏 (PV) 系统电流电压特性的比较分析
Pub Date : 2024-04-11 DOI: 10.9734/jenrr/2024/v16i4345
Emmanuel B. Ettah, Goodness N. Nwabueze, U. J. Ekah
This study investigated the effect of solar radiation’s intensity and ambient temperature on the current-voltage (I-V) characteristics of monocrystalline and polycrystalline photovoltaic (PV) systems in the generation of electricity in Calabar and Okuku, Cross River State, Nigeria. Appropriate measuring devices were employed to record daily readings of these parameters at the study locations, from July to August 2022. The data were collected and results graphically analyzed and calculated. The results indicate that current (Isc), voltage (Voc) as well as the maximum power (Pmax) of both module types increased positively with increase in solar radiation and ambient temperature. Results from collected and computed data also show average daily readings across the locations for solar radiation ranging between 271Wm-2 and 409Wm-2 and ambient temperature between 320C and 370C. The calculated Pmax ranges between 49W and 63W from the 130W solar modules used for the investigation. Another notable result is that the polycrystalline module exhibits higher Pmax than the monocrystalline module in both locations. In spite of the low solar radiation and ambient temperature obtained during this study period, which is considered the worst climatic period of the year (July and August), it is desirable and recommendable to employ solar modules as an alternative power generation in Calabar and Okuku, Cross River State, Nigeria.
本研究调查了太阳辐射强度和环境温度对尼日利亚克罗斯河州卡拉巴尔和奥库库单晶和多晶光伏发电系统电流电压(I-V)特性的影响。2022 年 7 月至 8 月期间,在研究地点使用了适当的测量设备记录这些参数的每日读数。收集数据后,对结果进行了图形分析和计算。结果表明,两种类型模块的电流(Isc)、电压(Voc)和最大功率(Pmax)都随着太阳辐射和环境温度的增加而正增长。收集和计算的数据结果还显示,各地点的日平均太阳辐射读数介于 271Wm-2 和 409Wm-2 之间,环境温度介于 320C 和 370C 之间。调查中使用的 130 瓦太阳能电池组件的计算最大功率介于 49 瓦到 63 瓦之间。另一个值得注意的结果是,在这两个地点,多晶组件的 Pmax 均高于单晶组件。尽管本研究期间的太阳辐射和环境温度较低,被认为是一年中气候最恶劣的时期(七月和八月),但在尼日利亚克罗斯河州的卡拉巴尔和奥库克采用太阳能组件作为替代发电方式是可取的,也是值得推荐的。
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引用次数: 0
Design and Techno-economic Analysis of an Improved Multipurpose Cooker Stove 改进型多用途炊事炉的设计与技术经济分析
Pub Date : 2024-04-10 DOI: 10.9734/jenrr/2024/v16i4344
Kingsley Kaputo, M. Mwanza
In response to the growing concerns surrounding the adverse health and environmental impacts of inefficient and hazardous traditional cooking fuels and stoves, this research aims to design and assess the performance of an improved multipurpose cooker stove. The study focuses on Zambia, a country deeply affected by air pollution and deforestation due to charcoal and firewood production using inefficient cooking stoves called Mbaula.The primary objective is to create an economically viable and environmentally friendly cooking stove that addresses the sustainability challenges of traditional cooking practices. The research is guided by key objectives. The study outlines the design process of the improved multipurpose cooker stove, emphasizing the incorporation of sustainable design principles.The improved multipurpose cooker stove demonstrated a thermal efficiency of 87.49%, significantly higher than the 11.88% thermal efficiency of traditional stoves. This improvement in efficiency is crucial for reducing fuel consumption and maximizing heat transfer during cooking processes. In addition, the research findings showed that the improved multipurpose cooker stove consumed 0.3643 kg/L less fuel compared to traditional stoves. This fuel savings not only reduces the cost of raw materials but also contributes to environmental sustainability by lowering deforestation rates and air pollution. Despite the initial investment cost of the improved cooker stove, the long-term operation costs are lower due to reduced fuel consumption and maintenance expenses.The study's findings and recommendations hold promise for addressing critical challenges related to clean cooking solutions, environmental preservation, and the well-being of households in Zambia and similar contexts.
由于人们日益关注低效、有害的传统烹饪燃料和炉灶对健康和环境造成的不利影响,本研究旨在设计和评估一种改进型多功能炉灶的性能。赞比亚是一个深受空气污染和森林砍伐影响的国家,人们使用低效的 Mbaula 炉灶生产木炭和木柴。这项研究的主要目的是设计一种经济可行且环保的炉灶,以应对传统烹饪方式带来的可持续性挑战。这项研究以主要目标为指导。研究概述了改进型多用途炉灶的设计过程,强调了可持续设计原则的融入。改进型多用途炉灶的热效率为 87.49%,大大高于传统炉灶 11.88% 的热效率。热效率的提高对于减少燃料消耗和在烹饪过程中最大限度地传热至关重要。此外,研究结果表明,与传统炉灶相比,改进型多功能炉灶的燃料消耗量减少了 0.3643 公斤/升。节省的燃料不仅降低了原材料成本,还通过降低森林砍伐率和空气污染,促进了环境的可持续发展。尽管改良炉灶的初始投资成本较高,但由于燃料消耗和维护费用的减少,其长期运营成本也较低。这项研究的结果和建议有望解决与清洁烹饪解决方案、环境保护以及赞比亚和类似国家的家庭福祉有关的重大挑战。
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引用次数: 0
Revisiting the Nexus between Renewable Energy Consumption and Economic Growth in Nigeria: The VECM Approach 重新审视尼日利亚可再生能源消费与经济增长之间的关系:VECM 方法
Pub Date : 2024-04-04 DOI: 10.9734/jenrr/2024/v16i4343
Rebecca Folake Bank-Ola, Olamide M. Adediwura, Ifeoluwa Alao-Owunna, Victoria Christian Udofia
The research investigates the effect of renewable energy consumption on economic growth as well as analyzing the dynamic relationship between both variables from 1990 to 2022. Annual secondary data covering the period between 1990 and 2022 were used in the study. Data on real gross domestic product, renewable energy consumption (% of total final energy consumption), gross capital formation (% of GDP), labor force, total and trade (% of GDP) were sourced from World Development Indicator. The study applies Johansen co-integration test and Vector Error Correction Model (VECM) to examine the effect of renewable energy consumption on economic growth and other explanatory variables as well as using pairwise granger causality test to examine the causal relationship between both variables. The empirical evidence revealed long-term relationship between renewable energy consumption and economic growth. Evidence shows that there is no causality either unidirectional or bi-directional between both variables. In short run, renewable energy consumption revealed a significant positive impact on economic growth. This shows that renewable energy may stimulate economic growth, particularly as it has a greater short-term impact on economic growth than capital formation. The key policy implication drawn from the results indicate the need for investment in renewable energy technologies and infrastructure, which can help to increase the availability and affordability of renewable energy, improve workforce development in Nigeria renewable energy sector.
研究调查了可再生能源消费对经济增长的影响,并分析了 1990 年至 2022 年这两个变量之间的动态关系。研究使用了 1990 年至 2022 年期间的年度二手数据。实际国内生产总值、可再生能源消费(占最终能源消费总量的百分比)、资本形成总额(占国内生产总值的百分比)、劳动力、总量和贸易(占国内生产总值的百分比)等数据来自世界发展指标。研究采用约翰森协整检验和向量误差修正模型(VECM)来检验可再生能源消费对经济增长和其他解释变量的影响,并采用成对格兰杰因果检验来检验这两个变量之间的因果关系。实证研究表明,可再生能源消费与经济增长之间存在长期关系。证据显示,两个变量之间不存在单向或双向因果关系。短期来看,可再生能源消费对经济增长有显著的积极影响。这表明,可再生能源可能会刺激经济增长,尤其是可再生能源对经济增长的短期影响要大于资本形成。从研究结果中得出的主要政策含义表明,有必要对可再生能源技术和基础设施进行投资,这有助于提高可再生能源的可用性和可负担性,改善尼日利亚可再生能源部门的劳动力发展。
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引用次数: 0
Parametric Evaluation of Biogas Production from Sawdust and Treated Human Faeces: Optimal Custom Design Approach 利用锯末和处理过的人类粪便生产沼气的参数评估:最佳定制设计方法
Pub Date : 2024-03-18 DOI: 10.9734/jenrr/2024/v16i3338
A. O. Emu, S. C. Iweka, K. E. Madu, N. E. Nwanze
As energy demand is increasing astronomically, fossil-based fuels became scarce and more expensive, and carbon dioxide emission levels became of greater concern. Thus, the need to convert the co-digestion of sawdust and treated human faeces to produce biogas, a carbon-neutral gas to replace fossil fuels. From the outcome, the logistic function model performance was satisfactory in the simulation of the experimental process. The codigestion of sawdust and human faeces at 2.5 kg each produced the highest biogas output of 5.43 L using Optimal (Custom) Design of Mixture approach but the human faeces alone gave a better biogas quality. Additionally, the high coefficient of determination (R2) ranging between 0.9959 - 0.9879 and standard deviation of 0.023 - 0.321 for temperature - biogas yield respectively, fall within an ideal range. Thus, the model proved to be a useful tool in predicting anaerobic digestion and biogas production processes. Furthermore, the FTIR analysis of sawdust and human faeces indicates their potential to produce biogas if subjected to anaerobic environment. In addition, the GCMS analyzed the % of methane to be 58.40% which is within  accepted   range.  The biogas   was tested with a locally fabricated gas burner for flammability and it ignited with a blue flame. Thus, this experiment can be translated to an industrial scale biogas production for cooking and electricity to boost local economy and alleviate poverty.
由于能源需求呈天文数字增长,化石燃料变得稀缺和昂贵,二氧化碳的排放水平变得更加令人担忧。因此,有必要将锯末和经过处理的人类粪便共同消化转化为沼气,这是一种碳中和气体,可以替代化石燃料。从结果来看,Logistic 函数模型在模拟实验过程中的表现令人满意。采用最佳(定制)混合物设计方法,锯末和人粪各 2.5 千克的共同消化产生的沼气产量最高,为 5.43 升,但单独使用人粪产生的沼气质量更好。此外,温度-沼气产量的决定系数 (R2) 在 0.9959 - 0.9879 之间,标准偏差在 0.023 - 0.321 之间,均在理想范围内。因此,该模型被证明是预测厌氧消化和沼气生产过程的有用工具。此外,对锯末和人类粪便的傅立叶变换红外分析表明,如果在厌氧环境下,它们具有产生沼气的潜力。此外,经气相色谱分析,甲烷含量为 58.40%,在可接受范围内。 用当地制造的气体燃烧器对沼气的可燃性进行了测试,结果显示沼气点燃后发出蓝色火焰。因此,该实验可转化为工业规模的沼气生产,用于烹饪和发电,以促进当地经济发展和减贫。
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引用次数: 0
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Journal of Energy Research and Reviews
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