Journal of civil engineering and environmental sciences最新文献

Solid waste management challenges and solutions: The case of the city of Khouribga (Morocco) 固体废物管理的挑战和解决方案：胡里卜加市（摩洛哥）案例

Journal of civil engineering and environmental sciences Pub Date : 2024-03-02 DOI: 10.17352/2455-488x.000078

Salama Youssef, C. Mohammed

{"title":"Solid waste management challenges and solutions: The case of the city of Khouribga (Morocco)","authors":"Salama Youssef, C. Mohammed","doi":"10.17352/2455-488x.000078","DOIUrl":"https://doi.org/10.17352/2455-488x.000078","url":null,"abstract":"In Morocco, like in many developing countries, the management of solid waste, especially household solid waste, is a major concern. It is estimated that each person generates an average of 0.67 kilograms of urban waste per day, while in rural areas, this figure is 0.3 kilograms per day. The collection of urban solid waste is regular and almost daily, reaching approximately 5.5 million metric tons per year. The management of household waste is a major concern for all urban communities. The city of Khouribga, like many other Moroccan cities, faces various environmental challenges such as air pollution, waste management, and preservation of natural resources. In order to address these issues, it is essential to gather accurate and comprehensive information to develop effective and sustainable strategies. In this context, efforts are being made to optimize and improve the collection of household solid waste in the urban municipality of Khouribga. This study has revealed the existence of technical and social constraints that hinder the smooth operation of the current solid waste collection in this city. Therefore, the mobilization of the municipality, service providers, and the population is necessary to overcome these challenges.","PeriodicalId":488973,"journal":{"name":"Journal of civil engineering and environmental sciences","volume":"55 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140267366","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

Revolutionizing cleaning: The future of broomstick and dustpan design 革命性的清洁:未来的扫帚和簸箕设计

Journal of civil engineering and environmental sciences Pub Date : 2023-11-09 DOI: 10.17352/2455-488x.000072

Arciniega-Rocha Ricardo P, Erazo-Chamorro Vanessa C, Phimmavong Phetsalath, Gyula Szabo

{"title":"Revolutionizing cleaning: The future of broomstick and dustpan design","authors":"Arciniega-Rocha Ricardo P, Erazo-Chamorro Vanessa C, Phimmavong Phetsalath, Gyula Szabo","doi":"10.17352/2455-488x.000072","DOIUrl":"https://doi.org/10.17352/2455-488x.000072","url":null,"abstract":"In the context of increasing environmental awareness, the demand for sustainable products is on the rise. This research addresses the growing demand for sustainability by redesigning brooms and dustpans with eco-friendly materials, reducing waste and environmental impact. It emphasizes the goals of enhancing user experience, efficiency, durability, accessibility, and sustainability. A case study investigates the physical challenges faced by street sweepers and underscores the importance of anthropometric considerations in design. The resulting ergonomic redesign significantly reduces workload and musculoskeletal complaints, improving comfort and efficiency. The redesign introduces adjustable handles, lightweight materials, and a 3-in-1 brush system with eco-friendly components. The dustpan features an improved handle, an angled design for efficient debris collection, and a built-in cleaning comb. Both tools are constructed from lightweight yet durable materials and offer a foldable design for user convenience, emphasizing sustainability through eco-friendly materials. In conclusion, this holistic approach enhances the cleaning experience, promoting efficiency, user-friendliness, and environmental responsibility.","PeriodicalId":488973,"journal":{"name":"Journal of civil engineering and environmental sciences","volume":" 41","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135293084","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

Taguchi analysis of the tensile behaviour of unaged and hygrothermally aged asymmetric helicoidally stacked CFRP composites 非对称螺旋堆积CFRP复合材料未老化和热湿老化拉伸性能的田口分析

Journal of civil engineering and environmental sciences Pub Date : 2023-10-17 DOI: 10.17352/2455-488x.000071

CN Nwambu, GI Chibueze, EN Nwankwo, CM Ekwedigwe

{"title":"Taguchi analysis of the tensile behaviour of unaged and hygrothermally aged asymmetric helicoidally stacked CFRP composites","authors":"CN Nwambu, GI Chibueze, EN Nwankwo, CM Ekwedigwe","doi":"10.17352/2455-488x.000071","DOIUrl":"https://doi.org/10.17352/2455-488x.000071","url":null,"abstract":"Taguchi method was used to predict and optimize the effects of hygrothermal aging on the tensile behavior of asymmetric helicoidally stacked Carbon Fiber Reinforced Plastic (CFRP) composites. This research is in furtherance to the previous work, which dealt purely with experiments. MR70 12P carbon fiber epoxy prepreg sheets were manufactured into laminated composites comprising constant inter-ply pitch angles ranging from 0o to 30o. The composites were tested in tension as either dry unaged specimens or following hygrothermal aging in seawater at the constant temperatures of 40 oC and 60 oC for 2000 hrs. Optimizations were conducted based on Taguchi L18 orthogonal array considering two design parameters viz. inter-ply stacking angles and hygrothermal aging temperature. The result depicted that the combination of aging temperature (C) and stacking angles are major factors in determining the tensile behavior of composite materials (p = 0.011). The model explains 86.6% of tensile strength variability, with a predicted R-squared value of 93.04%. The model’s robustness is supported by the adjusted R-squared value of 77.6%. Analysis of variance shows that inter-ply stacking angles are the main significant factor affecting the tensile behaviors at a 95% confidence level. A confirmation test was carried out to validate the optimized results and it was found that there were improvements in S/N ratios from initial to optimal setting.","PeriodicalId":488973,"journal":{"name":"Journal of civil engineering and environmental sciences","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136077656","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

Interstellar Boundary Explorer (IBEX) may have recorded a cross-tail current disruption event of the substorm 星际边界探测器(IBEX)可能已经记录到亚风暴的交叉尾电流中断事件

Journal of civil engineering and environmental sciences Pub Date : 2023-09-21 DOI: 10.17352/2455-488x.000070

Li Lu

{"title":"Interstellar Boundary Explorer (IBEX) may have recorded a cross-tail current disruption event of the substorm","authors":"Li Lu","doi":"10.17352/2455-488x.000070","DOIUrl":"https://doi.org/10.17352/2455-488x.000070","url":null,"abstract":"The spatial and temporal variations of satellite measurements correspond to different physical connotations. ENA imaging is an effective method to avoid the confusion of spatial and temporal variations of plasma space distribution in remote sensing region. However, for the neutral atom imager with scanning sampling, if the sampling time is too long (such as exceeding the evolution period of related physical events), it is still necessary to carefully analyze the time change factors of the space environment during the sampling period. Our re-certification of ENA scanning images of the IBEX-Hi’s “terrestrial plasma sheet disconnection” revealed that a magnetospheric substorm occurred during sampling, most likely due to the pitch angle diffusion of energetic ions in the ring current to create the so-called “plasma sheet disconnection” illusion. The observation of ENA imaging reflects the motion pattern of its parent ions, which have a certain distance from space plasma visualization. The dynamic evolution of ring current energetic ion diffusion has inspired us to create a new macroscopic model of substorms that can be visually monitored in the ecliptic plane using ENA imaging.","PeriodicalId":488973,"journal":{"name":"Journal of civil engineering and environmental sciences","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136238101","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

Regarding the number of blades in the rotor of the wind turbine 关于风力发电机转子中叶片的数量

Journal of civil engineering and environmental sciences Pub Date : 2023-09-07 DOI: 10.17352/2455-488x.000069

Shykhailov M, Kokhanevich V

引用次数: 0

Examination of hydrodynamic behavior of wind deflectors in the normal inner temperature with the point of more efficiency (Case study: Bwhsa Köppen climate classification of Kashan City) 正常内部温度下更高效点下风偏转板的水动力特性检验(以Bwhsa Köppen喀山市气候分类为例)

Journal of civil engineering and environmental sciences Pub Date : 2023-09-05 DOI: 10.17352/2455-488x.000068

Karbasforoushha Mohammadali

{"title":"Examination of hydrodynamic behavior of wind deflectors in the normal inner temperature with the point of more efficiency (Case study: Bwhsa Köppen climate classification of Kashan City)","authors":"Karbasforoushha Mohammadali","doi":"10.17352/2455-488x.000068","DOIUrl":"https://doi.org/10.17352/2455-488x.000068","url":null,"abstract":"One of the ways to achieve a building with higher energy efficiency and an efficient system is to use local architectural experiences. In the meantime, a wind deflector is one of the elements used in the past to create comfort. In the Bwhsa Köppen climate classification of Kashan City, they used to move and cool the air in the building. This study investigates the interior of these settlements in this climate to aim to reach greater efficiency of this element by CFD software, Energy Plus, and Open Studio with a descriptive-analytical method and then analyzes the results. A comparison of the results of the analysis of wind speed in wind turbines and how the wind is oriented in the interior is shown. Due to the low thermal mass of the wind deflector walls compared to the room, the temperature fluctuation is always higher than in the room. The main factors in temperature drop are proportionality of dimensions-air inlet valve to the windshield, water temperature, measurements, and height of the windshield column. Finally, to reduce the room temperature further, the priority is to use a spray windshield over windshield wipers. Especially windshields with water spray in which most of the room has a temperature of 25 degrees Celsius and are in Kashan city’s thermal comfort range.","PeriodicalId":488973,"journal":{"name":"Journal of civil engineering and environmental sciences","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135364410","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