Browsing by Author "Ribeiro, D."
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- Laser scanner in construction quality control of steel industrial buildingsPublication . Oliveira, R.; Ribeiro, D.; Oliveira, P.; Gavina, R.Currently, digital technologies provide engineers with the ability to improve quality control in civil engineering and construction. In this industry, structural quality control aims to prevent deviations that may occur in the assembly of the structure, to guarantee compliance with the essential requirements for its operation. In this context, an attempt was made to learn whether the application of digital technologies, particularly use of the laser scanners, is a resource that facilitates quality control procedures, making them digital and more reliable. In the presented case study, the methodology involved the use of a laser scanner in the quality control of the assembly of a steel structure of an industrial building. Thus, after the study on technologies associated with the automation of geometric object checks, with the use of the computational tools and digital laser survey technologies, the structural elements assembled in situ were analyzed. The main results this study allow us to conclude that the use of the digital laser scanner survey technologies contributes favorably to the automation of geometric quality control procedures in the assembly of steel structures.
- Wet-white shavings as a potential source for leather retanning bioagentsPublication . Freitas, Teresa; Marujo, I.; Ribeiro, D.; Crispim, Alfredo; Neto, Maria Paula; Gaião, J.; Oliveira, J.The tanning industry generates a high quantity of solid wastes, so there is a need to create ways to value these wastes with aim to reduce environmental impact. A lot of research work has been done recently and some authors have shown the potential for obtaining protein hydrolysates from solid wastes and its application. The present work had a main objective the wet-white shavings valorization by production of hydrolysed protein and biopolymrs for leather retanning.