TULTECH Journals
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Utilization of Mass I Rice Straw Ash (MRSA) in the Production of Eco-friendly Concrete for Sustainable Construction
No full textRice straws are the waste produced after the threshing of rice. This research considered the utilization of mass I varieties of rice straw ash to produce eco-friendly concrete. The mass I rice straw (MRS) used was gotten from the rice threshing floor in Odingene village, Akpugo community, Enugu state, Nigeria. The rice straw was calcined by open burning at 535 °C to produce the mass I rice straw ash (MRSA). The materials used were preliminary tested to determine their physical properties. The mass I rice straw ash was subjected to chemical composition and XRD tests. The mass I rice straw ash was used to partially replace OPC at 0, 5, 10, 15, 20, and 30%, respectively. The fresh property test, wet and dry density test, and cube strength test were done for all replacement levels. Using the slump test, the concrete\u27s workability was evaluated. Cube strength was determined on the 7th, 14th, 21st, and 28th day of curing in water. For this research, 72 concrete cubes were cast. From the investigation, the percentage increase in mass I rice straw ash replacement decreased the concrete\u27s workability. The samples\u27 compressive strength varied directly with the curing age and inversely with mass I rice straw ash replacement, though at a different rate, with the CC0,100 gaining the highest strength. The CC5, 95, and CC10, 90, attained 6.1% and 2.2% more strength compared to the design strength at the 28th day of curing, respectively. While the CC15,85; CC20,80; and CC30,70 attained 17.3%, 28.9%, and 67.6% lower strength compared to the design strength at 28th day of curing, The result further revealed that both the wet and dry densities of concrete were significantly affected by a higher replacement percentage of MRSA. This study has revealed that 5–10% mass I variety of rice straw ash (MRSA) can be utilized to replace OPC to produce eco-friendly grade 25 concrete for sustainable construction. The developed models were tested and found to be adequate
Water Distribution System Design using QGIS and EPANET
No full textThese days, water management has become an extremely important aspect of urban planning, and as a result of rising population and a lack of available water, water is becoming increasingly limited on a daily basis. A number of issues, including leakage, excessive use, and others, had led to the depletion of all of our groundwater supplies. The waste of water that occurred as a result of poorly constructed water distribution systems was especially significant. In this article, the design of two different water distribution systems—one in a rural area and one in an urban area—was explored with the goal of optimizing water distribution and monitoring patterns of water usage. With the use of QGIS, the region is initially mapped, and then EPANET is utilized for the purpose of constructing the water distribution network and conducting an analysis of the various aspects that influence the pipe and network design
Environment Effect on Underwater Wet Welding Process of API 5L X65 Steel by Coating Resin-Based E6013 Electrode
No full textThe microstructure formed on the surface of API 5L X65 steel conducted underwater water wet welding is influenced by the surrounding environment and the selection of electrodes used. E6013 electrode coated with polyester resin was chosen to prove whether conventional electrodes can be used for underwater wet welding and minimize the price paid due to expensive special underwater welding electrodes. Optical microscopy and SEM-EDX tests were conducted to observe and analyse the phases formed on the surface of the specimens and to determine the chemical elements contained. Carbon deficiency occurs during the underwater wet welding process due to compound reactions. In this research work it has been seen that austenite and ferrite are the dominant phases due to the loss of carbon which affects the phases formed
The Operation of Urban Water Treatment Plants: A Review of Smart Dashboard Frameworks
No full textBy locating useful characteristics and determining the perfect circumstances to meet ideal water quality criteria, this study seeks to improve the operation of a water treatment facility. The research comprises gathering data from personnel and exposure to system events, as well as from explicit and tacit knowledge sources. The problem at hand is a multi-objective, multi-criteria problem with many variables in spatial and temporal dimensions, requiring the use of powerful tools for analysis. All engineering problems have an objective function consisting of smaller sub-functions, typically in the form of cost or error minimization. To solve such problems, optimization methods based on natural patterns have been introduced, including genetic algorithms, evolutionary algorithms, and particle mass optimization. By optimizing the operation process of the water treatment plant, the quality of the water provided can be improved to meet standards set by organizations such as Iran 1053, WHO, and EPA. The study\u27s findings could be used to implement changes to the plant\u27s management and operation processes to achieve more ideal water quality conditions. Ultimately, the optimization of water treatment plant processes could have significant positive impacts on public health and well-being, as well as the environment
Modeling the Distribution of Suspended Particles in Sabzevar Lar Cement Factory with the AERMOD Model
No full textToday, air pollution is a significant issue, and one of the most significant environmental polluters is the industrial sector. In order to manage and impose limitations on sources of pollutants, monitoring air quality and assessing the amount of breaching air pollution limits around industrial enterprises is a valuable tool. Air pollution distribution models are thought to be the simplest and most practical way to monitor and evaluate the concentration of pollutants as well as to adopt suitable management techniques and strategies to reduce air pollution sources because it is currently not possible to directly measure the concentration of pollutants in any place and time. Therefore, the distribution of suspended particles (PM10) from stationary sources (chimneys of Lar Sabzevar Cement facilities) was examined annually for five years in each 24-hour period in this study using the AERMOD model. The highest number of suspended particles, which is substantially lower than the Iranian environmental limit of 150 g/m3, was found to be 3.36 g/m3. Results also indicated that the Lar Sabzevar cement mill does not produce significant environmental issues in terms of suspended materials, with an average yearly concentration of suspended matter owing to plant activities not exceeding 0.866 g/m3. Due to its location in the northeastern portion of the cement factory and its strong easterly breeze, Sabzevar is insulated from the impacts of cement factory operations
Design of Rolling Machine to Improve Mechanical Properties of Strapping-band Steel and Low Carbon Steel type SHP 440
No full textThe modification of new roll machine should be able to produce very good mechanical and physical properties of different metal materials. Furthermore, this also can affect the microstructure of the metal. Conventional low carbon steel with a ferrite-perlite microstructure has relatively low mechanical properties. Due to it our research work refers to the mechanism of metal strengthening by means of grain refinement with the assumption that it will increase the strength and toughness of this Special High Performance (SHP) 440 low carbon steel. SHP 440 carbon steel with a maximum carbon content of 0.18% by weight C through a cold rolling process with size reduction variations of 10, 20, 30, 40, 50, 60 and 70%. The results showed that the most optimum increase in hardness values occurred in rolling with a size reduction of 70%, namely HB: 98 and increase of 16% from the initial hardness value, namely HB: 81.67 with a grain size of 8.20μm or decreased by 24.44% from the initial grain diameter of 10.85μm. In this research work it has been found that the greater the percent reduction in rolling size the hardness value of the SHP 440 low carbon steel will be higher
E-Commerce Business Model in KLER Enterprise for Shirt Manufacturing
No full textE-commerce is emerging as a new way to help businesses to increase competitiveness and thus contribute to the economic success of the country. Spaces and opportunities for e-commerce are growing due to the steadily improving access to technical and communication infrastructure. The integration of information and communication technology in business enables the reduction of product costs, improvement of productivity, as well as the promotion of greater participation and mass activation of consumers. This research work is focused on the realization of a successful study work in electronic commerce and electronic business for shirt manufacturing in Albania called KLER enterprise. Furthermore, project of developing a website that sells shirts according to preference is described in the case study and are explained also the steps towards the development of the KLER web page. This includes creating more effective external interactions with customers, associates, and suppliers, and it can also improve the internal efficiency of the business as well as the emergence of new services and products
Efficiency Performance Evaluation on Multi-user Web Application Platforms in Cloud Computing
No full textCloud computing is a well-known paradigm nowadays because it decreases the cost to access the application, for a massive amount of data from anywhere in the world via internet. This paper takes the approach of testing the performance of web application deployment environment. The main objective of this paper was to investigate the performance of web application deployment infrastructure by growing eventually the number of users that visit the web application concurrently. The infrastructure that was used is part of the services provided by cloud computing, more specifically Platform as a Service (PaaS). This service provided a runtime environment in which we easily created, tested and deployed the web application. Tests were designed by using an open source tool. Web application subject for testing purposes was an open source pet shop application which fulfils the criteria of being a multi-user web application. Tests were created by using an open source application called Apache JMeter. One of main goals was to develop a proper test plan by considering user behaviour accessing a web application. We have developed and implemented three scenarios, started with deployment of the platform, installing dependencies and finally installing the web application used for performance testing. We have tested 2 different deployment platforms, in the first environment everything is installed in one machine and in second environment we separate application server from the database server. We have concluded in results where processes like register, login and checkout consumes much more resources of the server. In the future we will try to understand where machine learning stands in this part of web application development and how it can affect deployment infrastructure
Modelling of High Precision Pneumatic Stepper Motors for Electronics and Modern Medicine Applications
No full textIn this paper we will be focused on pneumatic stepper motors which offer a high precision in intermediate movements, as well as their electronic counterparts electronic stepper motors. This research work aims to build computer simulation models for high precision pneumatic stepper motor by analyzing their advantages and disadvantages. It has been analyzed the resistance to deformation and the level of stress for three types of materials such as plastic polylactic acid (PLA), 1060 aluminum alloy and A36 steel by using LabView and SolidWorks software’s. Simulation results have shown that metallic materials have higher performance but when it comes to function within strong electromagnetic fields, plastic material definitely takes its place. These analysis results of the pressure signal propagation in the pipeline have determined that the length of the pipeline for pneumatic steeper motor should be minor then 3 m
Investigation of Damage from Radiological Dispersal Device
No full textSoftware platforms can be used to assess the radiological impact of potential releases of radionuclides. They are essential tools for use in controlling routine releases to the environment, as well as for planning the measures to be taken in case of accidental releases, for predicting their impact and for the probabilities of using a „dirty bomb”. The purpose of this development is: the impact study of Pasquill-Gifford atmospheric stability classes on radiological risks and decision-making. The risk of developing leukaemia was used as the target outcome. The correlation between leukaemia risk and changes in Pasquil‒Gifford stability classes was estimated since radioactive contamination from Radiological Dispersal Device in the lower atmospheric layers. The main expected contribution is provision of rapid and essential information on development as a result from radiological event