Workability of fresh concrete
Previous studies30,38,39 have reported that both LC3 binder and RA significantly degrade the workability of concrete. Therefore, this study briefly explores the change in slump of fresh concrete when these two…
Category: Engineering
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Estimation of risk perception of mine workers in underground metalliferous mines using multivariate structural equation modelling
Standard Notes, D. G. M. S. Ministry of Labour and Employment, Govt. of India, available online (2020). http://www.dgms.gov.in/writereaddata/UploadFile/SN.pdf
Liu, Q., Meng, S., Hassall, M. & Li, X. Accident-causing mechanism in coal mines based…
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Research on optimization of temperature sensitive points of machine tool thermal error based on independent variable selection criteria
The experiment was conducted on a three-axis vertical milling machine, as depicted in Fig. 3. The Renishaw laser interferometer (XL-80) is employed to measure the positioning error along the Y-axis of the machine tool, while PT100 temperature…
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Modulation and control of transformerless boosting inverters for three-phase photovoltaic systems: comprehensive analysis
Wageh, M., Dabour, S. M., Mostafa, R. M. & Ghalib, M. A. Space vector PWM of three-phase inverter with MPPT for photovoltaic system. Aust. J. Electr. Electron. Eng. 18(4), 310–318. https://doi.org/10.1080/1448837X.2021.1982445 (2021).
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Assessing heterogeneity in factors influencing three-wheeled motorized rickshaws crash outcomes between weekdays and weekends
The weekday and weekend models, presented in Tables 3 and 4, illustrate the injury severity analysis results for 3-WMR collisions in Rawalpindi, Pakistan. The random variables were assumed to have a normal distribution, and the models were…
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Development of intelligent controller for high performance electric drives with hybrid CSA and RERNN technique
The surrounding systems are growing as human life becomes more intelligent, which results in high cost and complexity. Optimization methods are crucial to deal with these complicated systems and maintain a balance between cost and quality. The…
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Multifilament spinning of mechanically recycled polypropylene from post-consumer sources for a circular economy in textile applications
Thermal and rheological properties
The two materials that were to be melt-spun were characterized (Fig. 2) using TGA and DSC.
Fig. 2 TGA (a) and DSC (b) of the rPP materials.
No decomposition is observed in the TGA curves for either material up to…
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Failure analysis of bolts in deluge valve bonnet in cooling tower system in petrochemical plant
The result of chemical analysis of the received (broken and unbroken) bolts samples, shown in Table 1, indicates that their composition corresponds to a category of AHSS (Advanced High Strength Steel) called TWIP (Twin Induced Plasticity) steel,…
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Unveiling optimal mother wavelets by COPRAS Method Analyzing speech signals despite face mask and shield obstacles
During the experiment, four participants underwent a series of three repetitions for both the vowel and GFP passages, with their speech signals captured and analyzed during each iteration. This process took place within a controlled classroom…
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Connected map-induced resource allocation scheme for cognitive radio network quality of service maximization
Scheme introduction
The Quality of service is ensured in cognitive radio networks by using resource allocation and scheduling. This includes the primary and secondary user terminals which involve the data transmission in the network. It indicates…
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