ERU Symposium 2021 Proceedings最新文献

Fluoride releasing kinetics in a weathered bearing biotite gneiss 含风化黑云母片麻岩中氟化物释放动力学

ERU Symposium 2021 Proceedings Pub Date : 2021-09-06 DOI: 10.31705/eru.2021.13

M.K.H. Madusanka, Sandun Sadanayake, L. Vithanage

{"title":"Fluoride releasing kinetics in a weathered bearing biotite gneiss","authors":"M.K.H. Madusanka, Sandun Sadanayake, L. Vithanage","doi":"10.31705/eru.2021.13","DOIUrl":"https://doi.org/10.31705/eru.2021.13","url":null,"abstract":"In several regions of the dry zone of Sri Lanka, excessive quantities of fluoride (F-) in groundwater have affected the water quality significantly. Apart from the well-known prevalence of dental fluorosis, Chronic Kidney Disease of uncertain etiology (CKDu) is widespread in different pockets in the dry zone of Sri Lanka [1]. Fluoride is one of the substances suspected of being causative of CKDu in the area. Since the kidneys retain more F- than in any other soft tissue and excess F- exposure can cause kidney disease. Within the same zone, the prevalence of CKDu varies by geographic area in a ground water and spatial distribution of selected trace elements in groundwater. The optimum F- level in drinking water, according to WHO guidelines, is 1.5 (mg/L); however, due to the unfavorable climatic conditions that exist in tropical countries, people ingest more water than normal intake, resulting in a high F- intake. The source of F- is geogenic. It has been found that the F- content of basement rocks ranges from 9.5×10-5 to 1.44×10-3 kg/L in the region [3]. Farmers consume about 2-3 liters of water a day to quench their thirst, resulting in a daily F- intake of 3×10-3-1×10-2 kg/L [4].","PeriodicalId":308978,"journal":{"name":"ERU Symposium 2021 Proceedings","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121123472","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 on the Effect of Different Channel Geometries of Thermal Wheel for Energy Transfer Efficiency 热轮不同通道几何形状对能量传递效率影响的研究

ERU Symposium 2021 Proceedings Pub Date : 2021-09-06 DOI: 10.31705/eru.2021.9

A. Polgolla, H. Herath, Mda Wickramasinghe, M. Wijewardane, R. Ranasinghe

引用次数: 0

Simulation of Natural fibers/Waste Paper Composites to Use as Kraft Papers 天然纤维/废纸复合材料用于牛皮纸的模拟

ERU Symposium 2021 Proceedings Pub Date : 2021-09-06 DOI: 10.31705/eru.2021.5

R. K. Madhushani, S. Udayakumara, B. A. Dilhari

引用次数: 0

Second-Hand Fashion Consumption: A Literature Review 二手时尚消费:文献综述

ERU Symposium 2021 Proceedings Pub Date : 2021-09-06 DOI: 10.31705/eru.2021.6

Thamoda Geegamage, H. Ranaweera, R. Halwatura

引用次数: 0

Automating Incident Categorization in a Support Request System 支持请求系统中的事件自动分类

ERU Symposium 2021 Proceedings Pub Date : 2021-09-06 DOI: 10.31705/eru.2021.12

T. Cooray, M. Ariyaratne, M. Perera

引用次数: 0

Wood Splitting Machine for Tea and Bakery Industries 茶叶和烘焙工业用劈柴机

ERU Symposium 2021 Proceedings Pub Date : 2021-09-06 DOI: 10.31705/eru.2021.3

W. K. Lankapura, K. Alahapperuma

{"title":"Wood Splitting Machine for Tea and Bakery Industries","authors":"W. K. Lankapura, K. Alahapperuma","doi":"10.31705/eru.2021.3","DOIUrl":"https://doi.org/10.31705/eru.2021.3","url":null,"abstract":"In Sri Lanka, firewood is regarded as a common conventional fuel, mainly in food preparation purposes. Essentially due to economically availability, firewood has still been using as the main source to lit fire in rural areas. Other than for household food preparation, firewood is still the main source of generating heat in food related rural industries, such as tea factories, bakeries, hotels etc. In tea factories and in some of the bakeries, firewood is used in mass scales. Even tons of fire wood is used in each of them, per day. To make easy burning, the wood logs need to be cut in to small pieces. In almost all such places, wood splitting is done manually. It finds very difficult to split wood logs by using an axe. This needs time and more manpower. On the other hand, an additional cost is involved for workers’ payment. If the wood splitting can be mechanized, it may be huge beneficial for such industries as tea factories and bakeries etc. Therefore, this project is aimed to introduce a wood splitting machine, which has the specific objectives of efficient supply of usable level firewood at a shorter time with lower cost and without much manpower to split firewood logs. Lower maintenance requirement together with lower failure frequencies may be added advantages, when compared to the hydraulic devices [4].","PeriodicalId":308978,"journal":{"name":"ERU Symposium 2021 Proceedings","volume":"516 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123092493","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

Design and Development of a Novel Fixturing Solution for Handling Complex Shaped Components 一种处理复杂形状零件的新型夹具方案的设计与开发

ERU Symposium 2021 Proceedings Pub Date : 2021-09-06 DOI: 10.31705/eru.2021.4

S.P.I.E. Dharmathilaka, lkS.N. Devasurendra, lkP.K. Chathuranga, A. Kulasekera, N. Jayaweera

引用次数: 0

Dyeing of Cotton Fabric with a Natural Dye Extracted from Areca Concinna Peel 槟榔皮天然染料对棉织物的染色研究

ERU Symposium 2021 Proceedings Pub Date : 2021-09-06 DOI: 10.31705/eru.2021.2

R.G.S.M. Ranthunga, K. V. Wanigasekara, S. Udayakumara

引用次数: 0

Development of a Scaled Vehicle Model for Dynamics Testing

ERU Symposium 2021 Proceedings Pub Date : 2021-09-06 DOI: 10.31705/eru.2021.7

R.R. Hewavithana, J.P.L. Ravihara, K.K.S. Wishwajith, U. Perera, N. Dasanayake, J. Gamage

{"title":"Development of a Scaled Vehicle Model for Dynamics Testing","authors":"R.R. Hewavithana, J.P.L. Ravihara, K.K.S. Wishwajith, U. Perera, N. Dasanayake, J. Gamage","doi":"10.31705/eru.2021.7","DOIUrl":"https://doi.org/10.31705/eru.2021.7","url":null,"abstract":"The interest in using scaled models for dynamics testing of prototype vehicles is growing due to the high demand for autonomous driving. In the early design phases, vehicle testing is done using computer simulations. Even though computer simulations are proven to be extremely helpful in designing prototypes, simulation models need to be validated using realworld testing. There are high costs involved in vehicle testing and it’s dangerous to conduct aggressive driving manoeuvres with real drivers. As a solution, researchers have used scaled models. To validate the computer simulations, researchers matched the scaled model test data with full-size vehicle prototypes considering the dynamic similitude. However, previous work was limited to the analysis of the steady-state behaviour of vehicles. To accurately predict the behaviour, the transientstate response must be tested as well. Therefore, this paper outlines the precursory work of a scaled model with the ability to test both states during vehicle manoeuvres. This paper is structured as follows. Section II presents related work. Section III elaborates on the mathematical modelling and present the results of the computer simulations. Section IV presents the scaled model which will be developed. Section V concludes the findings, and present the future work of research.","PeriodicalId":308978,"journal":{"name":"ERU Symposium 2021 Proceedings","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124946407","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

Experimental Study on Load Bearing Capacity of Cement Stabilized Unburnt Clay Bricks 水泥稳定未烧粘土砖承载性能试验研究

ERU Symposium 2021 Proceedings Pub Date : 2021-09-06 DOI: 10.31705/eru.2021.10

J. Mohamed, K. Kuruppu, Sinohydro Co. Ltd

引用次数: 0